/* write.c - emit .o file
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/* write.c - emit .o file
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Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
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Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
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1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
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1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
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2010, 2011 Free Software Foundation, Inc.
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2010, 2011, 2012 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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This file is part of GAS, the GNU Assembler.
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|
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GAS is free software; you can redistribute it and/or modify
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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any later version.
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|
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GAS is distributed in the hope that it will be useful,
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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02110-1301, USA. */
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/* This thing should be set up to do byteordering correctly. But... */
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/* This thing should be set up to do byteordering correctly. But... */
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#include "as.h"
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#include "as.h"
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#include "subsegs.h"
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#include "subsegs.h"
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#include "obstack.h"
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#include "obstack.h"
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#include "output-file.h"
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#include "output-file.h"
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#include "dwarf2dbg.h"
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#include "dwarf2dbg.h"
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#include "libbfd.h"
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#include "libbfd.h"
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#include "compress-debug.h"
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#include "compress-debug.h"
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|
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#ifndef TC_ADJUST_RELOC_COUNT
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#ifndef TC_ADJUST_RELOC_COUNT
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#define TC_ADJUST_RELOC_COUNT(FIX, COUNT)
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#define TC_ADJUST_RELOC_COUNT(FIX, COUNT)
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#endif
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#endif
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#ifndef TC_FORCE_RELOCATION
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#ifndef TC_FORCE_RELOCATION
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#define TC_FORCE_RELOCATION(FIX) \
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#define TC_FORCE_RELOCATION(FIX) \
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(generic_force_reloc (FIX))
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(generic_force_reloc (FIX))
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#endif
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#endif
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|
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#ifndef TC_FORCE_RELOCATION_ABS
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#ifndef TC_FORCE_RELOCATION_ABS
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#define TC_FORCE_RELOCATION_ABS(FIX) \
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#define TC_FORCE_RELOCATION_ABS(FIX) \
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(TC_FORCE_RELOCATION (FIX))
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(TC_FORCE_RELOCATION (FIX))
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#endif
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#endif
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|
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#ifndef TC_FORCE_RELOCATION_LOCAL
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#ifndef TC_FORCE_RELOCATION_LOCAL
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#define TC_FORCE_RELOCATION_LOCAL(FIX) \
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#define TC_FORCE_RELOCATION_LOCAL(FIX) \
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(!(FIX)->fx_pcrel \
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(!(FIX)->fx_pcrel \
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|| TC_FORCE_RELOCATION (FIX))
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|| TC_FORCE_RELOCATION (FIX))
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#endif
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#endif
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|
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#ifndef TC_FORCE_RELOCATION_SUB_SAME
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#ifndef TC_FORCE_RELOCATION_SUB_SAME
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#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
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#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
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(! SEG_NORMAL (SEG))
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(! SEG_NORMAL (SEG))
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#endif
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#endif
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#ifndef md_register_arithmetic
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#ifndef md_register_arithmetic
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# define md_register_arithmetic 1
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# define md_register_arithmetic 1
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#endif
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#endif
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#ifndef TC_FORCE_RELOCATION_SUB_ABS
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#ifndef TC_FORCE_RELOCATION_SUB_ABS
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#define TC_FORCE_RELOCATION_SUB_ABS(FIX, SEG) \
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#define TC_FORCE_RELOCATION_SUB_ABS(FIX, SEG) \
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(!md_register_arithmetic && (SEG) == reg_section)
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(!md_register_arithmetic && (SEG) == reg_section)
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#endif
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#endif
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#ifndef TC_FORCE_RELOCATION_SUB_LOCAL
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#ifndef TC_FORCE_RELOCATION_SUB_LOCAL
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#ifdef DIFF_EXPR_OK
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#ifdef DIFF_EXPR_OK
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#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) \
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#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) \
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(!md_register_arithmetic && (SEG) == reg_section)
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(!md_register_arithmetic && (SEG) == reg_section)
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#else
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#else
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#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1
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#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1
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#endif
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#endif
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#endif
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#endif
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#ifndef TC_VALIDATE_FIX_SUB
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#ifndef TC_VALIDATE_FIX_SUB
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#ifdef UNDEFINED_DIFFERENCE_OK
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#ifdef UNDEFINED_DIFFERENCE_OK
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/* The PA needs this for PIC code generation. */
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/* The PA needs this for PIC code generation. */
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#define TC_VALIDATE_FIX_SUB(FIX, SEG) \
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#define TC_VALIDATE_FIX_SUB(FIX, SEG) \
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(md_register_arithmetic || (SEG) != reg_section)
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(md_register_arithmetic || (SEG) != reg_section)
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#else
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#else
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#define TC_VALIDATE_FIX_SUB(FIX, SEG) \
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#define TC_VALIDATE_FIX_SUB(FIX, SEG) \
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((md_register_arithmetic || (SEG) != reg_section) \
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((md_register_arithmetic || (SEG) != reg_section) \
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&& ((FIX)->fx_r_type == BFD_RELOC_GPREL32 \
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&& ((FIX)->fx_r_type == BFD_RELOC_GPREL32 \
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|| (FIX)->fx_r_type == BFD_RELOC_GPREL16))
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|| (FIX)->fx_r_type == BFD_RELOC_GPREL16))
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#endif
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#endif
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#endif
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#endif
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#ifndef TC_LINKRELAX_FIXUP
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#ifndef TC_LINKRELAX_FIXUP
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#define TC_LINKRELAX_FIXUP(SEG) 1
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#define TC_LINKRELAX_FIXUP(SEG) 1
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#endif
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#endif
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#ifndef MD_APPLY_SYM_VALUE
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#ifndef MD_APPLY_SYM_VALUE
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#define MD_APPLY_SYM_VALUE(FIX) 1
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#define MD_APPLY_SYM_VALUE(FIX) 1
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#endif
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#endif
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#ifndef TC_FINALIZE_SYMS_BEFORE_SIZE_SEG
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#ifndef TC_FINALIZE_SYMS_BEFORE_SIZE_SEG
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#define TC_FINALIZE_SYMS_BEFORE_SIZE_SEG 1
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#define TC_FINALIZE_SYMS_BEFORE_SIZE_SEG 1
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#endif
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#endif
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#ifndef MD_PCREL_FROM_SECTION
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#ifndef MD_PCREL_FROM_SECTION
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#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from (FIX)
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#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from (FIX)
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#endif
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#endif
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#ifndef TC_FAKE_LABEL
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#ifndef TC_FAKE_LABEL
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#define TC_FAKE_LABEL(NAME) (strcmp ((NAME), FAKE_LABEL_NAME) == 0)
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#define TC_FAKE_LABEL(NAME) (strcmp ((NAME), FAKE_LABEL_NAME) == 0)
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#endif
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#endif
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/* Positive values of TC_FX_SIZE_SLACK allow a target to define
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/* Positive values of TC_FX_SIZE_SLACK allow a target to define
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fixups that far past the end of a frag. Having such fixups
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fixups that far past the end of a frag. Having such fixups
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is of course most most likely a bug in setting fx_size correctly.
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is of course most most likely a bug in setting fx_size correctly.
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A negative value disables the fixup check entirely, which is
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A negative value disables the fixup check entirely, which is
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appropriate for something like the Renesas / SuperH SH_COUNT
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appropriate for something like the Renesas / SuperH SH_COUNT
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reloc. */
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reloc. */
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#ifndef TC_FX_SIZE_SLACK
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#ifndef TC_FX_SIZE_SLACK
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#define TC_FX_SIZE_SLACK(FIX) 0
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#define TC_FX_SIZE_SLACK(FIX) 0
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#endif
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#endif
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/* Used to control final evaluation of expressions. */
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/* Used to control final evaluation of expressions. */
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int finalize_syms = 0;
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int finalize_syms = 0;
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int symbol_table_frozen;
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int symbol_table_frozen;
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symbolS *abs_section_sym;
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symbolS *abs_section_sym;
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/* Remember the value of dot when parsing expressions. */
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/* Remember the value of dot when parsing expressions. */
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addressT dot_value;
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addressT dot_value;
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/* Relocs generated by ".reloc" pseudo. */
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/* Relocs generated by ".reloc" pseudo. */
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struct reloc_list* reloc_list;
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struct reloc_list* reloc_list;
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void print_fixup (fixS *);
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void print_fixup (fixS *);
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/* We generally attach relocs to frag chains. However, after we have
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/* We generally attach relocs to frag chains. However, after we have
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chained these all together into a segment, any relocs we add after
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chained these all together into a segment, any relocs we add after
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that must be attached to a segment. This will include relocs added
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that must be attached to a segment. This will include relocs added
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in md_estimate_size_for_relax, for example. */
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in md_estimate_size_for_relax, for example. */
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static int frags_chained = 0;
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static int frags_chained = 0;
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static int n_fixups;
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static int n_fixups;
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#define RELOC_ENUM enum bfd_reloc_code_real
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#define RELOC_ENUM enum bfd_reloc_code_real
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/* Create a fixS in obstack 'notes'. */
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/* Create a fixS in obstack 'notes'. */
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static fixS *
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static fixS *
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fix_new_internal (fragS *frag, /* Which frag? */
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fix_new_internal (fragS *frag, /* Which frag? */
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int where, /* Where in that frag? */
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int where, /* Where in that frag? */
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int size, /* 1, 2, or 4 usually. */
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int size, /* 1, 2, or 4 usually. */
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symbolS *add_symbol, /* X_add_symbol. */
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symbolS *add_symbol, /* X_add_symbol. */
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symbolS *sub_symbol, /* X_op_symbol. */
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symbolS *sub_symbol, /* X_op_symbol. */
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offsetT offset, /* X_add_number. */
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offsetT offset, /* X_add_number. */
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int pcrel, /* TRUE if PC-relative relocation. */
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int pcrel, /* TRUE if PC-relative relocation. */
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RELOC_ENUM r_type ATTRIBUTE_UNUSED /* Relocation type. */,
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RELOC_ENUM r_type /* Relocation type. */,
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int at_beginning) /* Add to the start of the list? */
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int at_beginning) /* Add to the start of the list? */
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{
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{
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fixS *fixP;
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fixS *fixP;
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n_fixups++;
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n_fixups++;
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fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS));
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fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS));
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fixP->fx_frag = frag;
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fixP->fx_frag = frag;
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fixP->fx_where = where;
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fixP->fx_where = where;
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fixP->fx_size = size;
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fixP->fx_size = size;
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/* We've made fx_size a narrow field; check that it's wide enough. */
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/* We've made fx_size a narrow field; check that it's wide enough. */
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if (fixP->fx_size != size)
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if (fixP->fx_size != size)
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{
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{
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as_bad (_("field fx_size too small to hold %d"), size);
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as_bad (_("field fx_size too small to hold %d"), size);
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abort ();
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abort ();
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}
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}
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fixP->fx_addsy = add_symbol;
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fixP->fx_addsy = add_symbol;
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fixP->fx_subsy = sub_symbol;
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fixP->fx_subsy = sub_symbol;
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fixP->fx_offset = offset;
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fixP->fx_offset = offset;
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fixP->fx_dot_value = dot_value;
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fixP->fx_dot_value = dot_value;
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fixP->fx_pcrel = pcrel;
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fixP->fx_pcrel = pcrel;
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fixP->fx_r_type = r_type;
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fixP->fx_r_type = r_type;
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fixP->fx_im_disp = 0;
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fixP->fx_im_disp = 0;
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fixP->fx_pcrel_adjust = 0;
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fixP->fx_pcrel_adjust = 0;
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fixP->fx_bit_fixP = 0;
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fixP->fx_bit_fixP = 0;
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fixP->fx_addnumber = 0;
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fixP->fx_addnumber = 0;
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fixP->fx_tcbit = 0;
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fixP->fx_tcbit = 0;
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fixP->fx_tcbit2 = 0;
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fixP->fx_tcbit2 = 0;
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fixP->fx_done = 0;
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fixP->fx_done = 0;
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fixP->fx_no_overflow = 0;
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fixP->fx_no_overflow = 0;
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fixP->fx_signed = 0;
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fixP->fx_signed = 0;
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|
|
#ifdef USING_CGEN
|
#ifdef USING_CGEN
|
fixP->fx_cgen.insn = NULL;
|
fixP->fx_cgen.insn = NULL;
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fixP->fx_cgen.opinfo = 0;
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fixP->fx_cgen.opinfo = 0;
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#endif
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#endif
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|
|
#ifdef TC_FIX_TYPE
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#ifdef TC_FIX_TYPE
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TC_INIT_FIX_DATA (fixP);
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TC_INIT_FIX_DATA (fixP);
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#endif
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#endif
|
|
|
as_where (&fixP->fx_file, &fixP->fx_line);
|
as_where (&fixP->fx_file, &fixP->fx_line);
|
|
|
{
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{
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|
|
fixS **seg_fix_rootP = (frags_chained
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fixS **seg_fix_rootP = (frags_chained
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? &seg_info (now_seg)->fix_root
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? &seg_info (now_seg)->fix_root
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: &frchain_now->fix_root);
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: &frchain_now->fix_root);
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fixS **seg_fix_tailP = (frags_chained
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fixS **seg_fix_tailP = (frags_chained
|
? &seg_info (now_seg)->fix_tail
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? &seg_info (now_seg)->fix_tail
|
: &frchain_now->fix_tail);
|
: &frchain_now->fix_tail);
|
|
|
if (at_beginning)
|
if (at_beginning)
|
{
|
{
|
fixP->fx_next = *seg_fix_rootP;
|
fixP->fx_next = *seg_fix_rootP;
|
*seg_fix_rootP = fixP;
|
*seg_fix_rootP = fixP;
|
if (fixP->fx_next == NULL)
|
if (fixP->fx_next == NULL)
|
*seg_fix_tailP = fixP;
|
*seg_fix_tailP = fixP;
|
}
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}
|
else
|
else
|
{
|
{
|
fixP->fx_next = NULL;
|
fixP->fx_next = NULL;
|
if (*seg_fix_tailP)
|
if (*seg_fix_tailP)
|
(*seg_fix_tailP)->fx_next = fixP;
|
(*seg_fix_tailP)->fx_next = fixP;
|
else
|
else
|
*seg_fix_rootP = fixP;
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*seg_fix_rootP = fixP;
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*seg_fix_tailP = fixP;
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*seg_fix_tailP = fixP;
|
}
|
}
|
}
|
}
|
|
|
return fixP;
|
return fixP;
|
}
|
}
|
|
|
/* Create a fixup relative to a symbol (plus a constant). */
|
/* Create a fixup relative to a symbol (plus a constant). */
|
|
|
fixS *
|
fixS *
|
fix_new (fragS *frag, /* Which frag? */
|
fix_new (fragS *frag, /* Which frag? */
|
int where, /* Where in that frag? */
|
int where, /* Where in that frag? */
|
int size, /* 1, 2, or 4 usually. */
|
int size, /* 1, 2, or 4 usually. */
|
symbolS *add_symbol, /* X_add_symbol. */
|
symbolS *add_symbol, /* X_add_symbol. */
|
offsetT offset, /* X_add_number. */
|
offsetT offset, /* X_add_number. */
|
int pcrel, /* TRUE if PC-relative relocation. */
|
int pcrel, /* TRUE if PC-relative relocation. */
|
RELOC_ENUM r_type /* Relocation type. */)
|
RELOC_ENUM r_type /* Relocation type. */)
|
{
|
{
|
return fix_new_internal (frag, where, size, add_symbol,
|
return fix_new_internal (frag, where, size, add_symbol,
|
(symbolS *) NULL, offset, pcrel, r_type, FALSE);
|
(symbolS *) NULL, offset, pcrel, r_type, FALSE);
|
}
|
}
|
|
|
/* Create a fixup for an expression. Currently we only support fixups
|
/* Create a fixup for an expression. Currently we only support fixups
|
for difference expressions. That is itself more than most object
|
for difference expressions. That is itself more than most object
|
file formats support anyhow. */
|
file formats support anyhow. */
|
|
|
fixS *
|
fixS *
|
fix_new_exp (fragS *frag, /* Which frag? */
|
fix_new_exp (fragS *frag, /* Which frag? */
|
int where, /* Where in that frag? */
|
int where, /* Where in that frag? */
|
int size, /* 1, 2, or 4 usually. */
|
int size, /* 1, 2, or 4 usually. */
|
expressionS *exp, /* Expression. */
|
expressionS *exp, /* Expression. */
|
int pcrel, /* TRUE if PC-relative relocation. */
|
int pcrel, /* TRUE if PC-relative relocation. */
|
RELOC_ENUM r_type /* Relocation type. */)
|
RELOC_ENUM r_type /* Relocation type. */)
|
{
|
{
|
symbolS *add = NULL;
|
symbolS *add = NULL;
|
symbolS *sub = NULL;
|
symbolS *sub = NULL;
|
offsetT off = 0;
|
offsetT off = 0;
|
|
|
switch (exp->X_op)
|
switch (exp->X_op)
|
{
|
{
|
case O_absent:
|
case O_absent:
|
break;
|
break;
|
|
|
case O_register:
|
case O_register:
|
as_bad (_("register value used as expression"));
|
as_bad (_("register value used as expression"));
|
break;
|
break;
|
|
|
case O_add:
|
case O_add:
|
/* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if
|
/* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if
|
the difference expression cannot immediately be reduced. */
|
the difference expression cannot immediately be reduced. */
|
{
|
{
|
symbolS *stmp = make_expr_symbol (exp);
|
symbolS *stmp = make_expr_symbol (exp);
|
|
|
exp->X_op = O_symbol;
|
exp->X_op = O_symbol;
|
exp->X_op_symbol = 0;
|
exp->X_op_symbol = 0;
|
exp->X_add_symbol = stmp;
|
exp->X_add_symbol = stmp;
|
exp->X_add_number = 0;
|
exp->X_add_number = 0;
|
|
|
return fix_new_exp (frag, where, size, exp, pcrel, r_type);
|
return fix_new_exp (frag, where, size, exp, pcrel, r_type);
|
}
|
}
|
|
|
case O_symbol_rva:
|
case O_symbol_rva:
|
add = exp->X_add_symbol;
|
add = exp->X_add_symbol;
|
off = exp->X_add_number;
|
off = exp->X_add_number;
|
r_type = BFD_RELOC_RVA;
|
r_type = BFD_RELOC_RVA;
|
break;
|
break;
|
|
|
case O_uminus:
|
case O_uminus:
|
sub = exp->X_add_symbol;
|
sub = exp->X_add_symbol;
|
off = exp->X_add_number;
|
off = exp->X_add_number;
|
break;
|
break;
|
|
|
case O_subtract:
|
case O_subtract:
|
sub = exp->X_op_symbol;
|
sub = exp->X_op_symbol;
|
/* Fall through. */
|
/* Fall through. */
|
case O_symbol:
|
case O_symbol:
|
add = exp->X_add_symbol;
|
add = exp->X_add_symbol;
|
/* Fall through. */
|
/* Fall through. */
|
case O_constant:
|
case O_constant:
|
off = exp->X_add_number;
|
off = exp->X_add_number;
|
break;
|
break;
|
|
|
default:
|
default:
|
add = make_expr_symbol (exp);
|
add = make_expr_symbol (exp);
|
break;
|
break;
|
}
|
}
|
|
|
return fix_new_internal (frag, where, size, add, sub, off, pcrel,
|
return fix_new_internal (frag, where, size, add, sub, off, pcrel,
|
r_type, FALSE);
|
r_type, FALSE);
|
}
|
}
|
|
|
/* Create a fixup at the beginning of FRAG. The arguments are the same
|
/* Create a fixup at the beginning of FRAG. The arguments are the same
|
as for fix_new, except that WHERE is implicitly 0. */
|
as for fix_new, except that WHERE is implicitly 0. */
|
|
|
fixS *
|
fixS *
|
fix_at_start (fragS *frag, int size, symbolS *add_symbol,
|
fix_at_start (fragS *frag, int size, symbolS *add_symbol,
|
offsetT offset, int pcrel, RELOC_ENUM r_type)
|
offsetT offset, int pcrel, RELOC_ENUM r_type)
|
{
|
{
|
return fix_new_internal (frag, 0, size, add_symbol,
|
return fix_new_internal (frag, 0, size, add_symbol,
|
(symbolS *) NULL, offset, pcrel, r_type, TRUE);
|
(symbolS *) NULL, offset, pcrel, r_type, TRUE);
|
}
|
}
|
|
|
/* Generic function to determine whether a fixup requires a relocation. */
|
/* Generic function to determine whether a fixup requires a relocation. */
|
int
|
int
|
generic_force_reloc (fixS *fix)
|
generic_force_reloc (fixS *fix)
|
{
|
{
|
if (fix->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|
if (fix->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|
|| fix->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
|
|| fix->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
|
return 1;
|
return 1;
|
|
|
if (fix->fx_addsy == NULL)
|
if (fix->fx_addsy == NULL)
|
return 0;
|
return 0;
|
|
|
return S_FORCE_RELOC (fix->fx_addsy, fix->fx_subsy == NULL);
|
return S_FORCE_RELOC (fix->fx_addsy, fix->fx_subsy == NULL);
|
}
|
}
|
|
|
/* Append a string onto another string, bumping the pointer along. */
|
/* Append a string onto another string, bumping the pointer along. */
|
void
|
void
|
append (char **charPP, char *fromP, unsigned long length)
|
append (char **charPP, char *fromP, unsigned long length)
|
{
|
{
|
/* Don't trust memcpy() of 0 chars. */
|
/* Don't trust memcpy() of 0 chars. */
|
if (length == 0)
|
if (length == 0)
|
return;
|
return;
|
|
|
memcpy (*charPP, fromP, length);
|
memcpy (*charPP, fromP, length);
|
*charPP += length;
|
*charPP += length;
|
}
|
}
|
|
|
/* This routine records the largest alignment seen for each segment.
|
/* This routine records the largest alignment seen for each segment.
|
If the beginning of the segment is aligned on the worst-case
|
If the beginning of the segment is aligned on the worst-case
|
boundary, all of the other alignments within it will work. At
|
boundary, all of the other alignments within it will work. At
|
least one object format really uses this info. */
|
least one object format really uses this info. */
|
|
|
void
|
void
|
record_alignment (/* Segment to which alignment pertains. */
|
record_alignment (/* Segment to which alignment pertains. */
|
segT seg,
|
segT seg,
|
/* Alignment, as a power of 2 (e.g., 1 => 2-byte
|
/* Alignment, as a power of 2 (e.g., 1 => 2-byte
|
boundary, 2 => 4-byte boundary, etc.) */
|
boundary, 2 => 4-byte boundary, etc.) */
|
int align)
|
int align)
|
{
|
{
|
if (seg == absolute_section)
|
if (seg == absolute_section)
|
return;
|
return;
|
|
|
if ((unsigned int) align > bfd_get_section_alignment (stdoutput, seg))
|
if ((unsigned int) align > bfd_get_section_alignment (stdoutput, seg))
|
bfd_set_section_alignment (stdoutput, seg, align);
|
bfd_set_section_alignment (stdoutput, seg, align);
|
}
|
}
|
|
|
int
|
int
|
get_recorded_alignment (segT seg)
|
get_recorded_alignment (segT seg)
|
{
|
{
|
if (seg == absolute_section)
|
if (seg == absolute_section)
|
return 0;
|
return 0;
|
|
|
return bfd_get_section_alignment (stdoutput, seg);
|
return bfd_get_section_alignment (stdoutput, seg);
|
}
|
}
|
|
|
/* Reset the section indices after removing the gas created sections. */
|
/* Reset the section indices after removing the gas created sections. */
|
|
|
static void
|
static void
|
renumber_sections (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *countparg)
|
renumber_sections (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *countparg)
|
{
|
{
|
int *countp = (int *) countparg;
|
int *countp = (int *) countparg;
|
|
|
sec->index = *countp;
|
sec->index = *countp;
|
++*countp;
|
++*countp;
|
}
|
}
|
|
|
static fragS *
|
static fragS *
|
chain_frchains_together_1 (segT section, struct frchain *frchp)
|
chain_frchains_together_1 (segT section, struct frchain *frchp)
|
{
|
{
|
fragS dummy, *prev_frag = &dummy;
|
fragS dummy, *prev_frag = &dummy;
|
fixS fix_dummy, *prev_fix = &fix_dummy;
|
fixS fix_dummy, *prev_fix = &fix_dummy;
|
|
|
for (; frchp; frchp = frchp->frch_next)
|
for (; frchp; frchp = frchp->frch_next)
|
{
|
{
|
prev_frag->fr_next = frchp->frch_root;
|
prev_frag->fr_next = frchp->frch_root;
|
prev_frag = frchp->frch_last;
|
prev_frag = frchp->frch_last;
|
gas_assert (prev_frag->fr_type != 0);
|
gas_assert (prev_frag->fr_type != 0);
|
if (frchp->fix_root != (fixS *) NULL)
|
if (frchp->fix_root != (fixS *) NULL)
|
{
|
{
|
if (seg_info (section)->fix_root == (fixS *) NULL)
|
if (seg_info (section)->fix_root == (fixS *) NULL)
|
seg_info (section)->fix_root = frchp->fix_root;
|
seg_info (section)->fix_root = frchp->fix_root;
|
prev_fix->fx_next = frchp->fix_root;
|
prev_fix->fx_next = frchp->fix_root;
|
seg_info (section)->fix_tail = frchp->fix_tail;
|
seg_info (section)->fix_tail = frchp->fix_tail;
|
prev_fix = frchp->fix_tail;
|
prev_fix = frchp->fix_tail;
|
}
|
}
|
}
|
}
|
gas_assert (prev_frag->fr_type != 0);
|
gas_assert (prev_frag->fr_type != 0);
|
gas_assert (prev_frag != &dummy);
|
gas_assert (prev_frag != &dummy);
|
prev_frag->fr_next = 0;
|
prev_frag->fr_next = 0;
|
return prev_frag;
|
return prev_frag;
|
}
|
}
|
|
|
static void
|
static void
|
chain_frchains_together (bfd *abfd ATTRIBUTE_UNUSED,
|
chain_frchains_together (bfd *abfd ATTRIBUTE_UNUSED,
|
segT section,
|
segT section,
|
void *xxx ATTRIBUTE_UNUSED)
|
void *xxx ATTRIBUTE_UNUSED)
|
{
|
{
|
segment_info_type *info;
|
segment_info_type *info;
|
|
|
/* BFD may have introduced its own sections without using
|
/* BFD may have introduced its own sections without using
|
subseg_new, so it is possible that seg_info is NULL. */
|
subseg_new, so it is possible that seg_info is NULL. */
|
info = seg_info (section);
|
info = seg_info (section);
|
if (info != (segment_info_type *) NULL)
|
if (info != (segment_info_type *) NULL)
|
info->frchainP->frch_last
|
info->frchainP->frch_last
|
= chain_frchains_together_1 (section, info->frchainP);
|
= chain_frchains_together_1 (section, info->frchainP);
|
|
|
/* Now that we've chained the frags together, we must add new fixups
|
/* Now that we've chained the frags together, we must add new fixups
|
to the segment, not to the frag chain. */
|
to the segment, not to the frag chain. */
|
frags_chained = 1;
|
frags_chained = 1;
|
}
|
}
|
|
|
static void
|
static void
|
cvt_frag_to_fill (segT sec ATTRIBUTE_UNUSED, fragS *fragP)
|
cvt_frag_to_fill (segT sec ATTRIBUTE_UNUSED, fragS *fragP)
|
{
|
{
|
switch (fragP->fr_type)
|
switch (fragP->fr_type)
|
{
|
{
|
case rs_align:
|
case rs_align:
|
case rs_align_code:
|
case rs_align_code:
|
case rs_align_test:
|
case rs_align_test:
|
case rs_org:
|
case rs_org:
|
case rs_space:
|
case rs_space:
|
#ifdef HANDLE_ALIGN
|
#ifdef HANDLE_ALIGN
|
HANDLE_ALIGN (fragP);
|
HANDLE_ALIGN (fragP);
|
#endif
|
#endif
|
know (fragP->fr_next != NULL);
|
know (fragP->fr_next != NULL);
|
fragP->fr_offset = (fragP->fr_next->fr_address
|
fragP->fr_offset = (fragP->fr_next->fr_address
|
- fragP->fr_address
|
- fragP->fr_address
|
- fragP->fr_fix) / fragP->fr_var;
|
- fragP->fr_fix) / fragP->fr_var;
|
if (fragP->fr_offset < 0)
|
if (fragP->fr_offset < 0)
|
{
|
{
|
as_bad_where (fragP->fr_file, fragP->fr_line,
|
as_bad_where (fragP->fr_file, fragP->fr_line,
|
_("attempt to .org/.space backwards? (%ld)"),
|
_("attempt to .org/.space backwards? (%ld)"),
|
(long) fragP->fr_offset);
|
(long) fragP->fr_offset);
|
fragP->fr_offset = 0;
|
fragP->fr_offset = 0;
|
}
|
}
|
fragP->fr_type = rs_fill;
|
fragP->fr_type = rs_fill;
|
break;
|
break;
|
|
|
case rs_fill:
|
case rs_fill:
|
break;
|
break;
|
|
|
case rs_leb128:
|
case rs_leb128:
|
{
|
{
|
valueT value = S_GET_VALUE (fragP->fr_symbol);
|
valueT value = S_GET_VALUE (fragP->fr_symbol);
|
int size;
|
int size;
|
|
|
size = output_leb128 (fragP->fr_literal + fragP->fr_fix, value,
|
size = output_leb128 (fragP->fr_literal + fragP->fr_fix, value,
|
fragP->fr_subtype);
|
fragP->fr_subtype);
|
|
|
fragP->fr_fix += size;
|
fragP->fr_fix += size;
|
fragP->fr_type = rs_fill;
|
fragP->fr_type = rs_fill;
|
fragP->fr_var = 0;
|
fragP->fr_var = 0;
|
fragP->fr_offset = 0;
|
fragP->fr_offset = 0;
|
fragP->fr_symbol = NULL;
|
fragP->fr_symbol = NULL;
|
}
|
}
|
break;
|
break;
|
|
|
case rs_cfa:
|
case rs_cfa:
|
eh_frame_convert_frag (fragP);
|
eh_frame_convert_frag (fragP);
|
break;
|
break;
|
|
|
case rs_dwarf2dbg:
|
case rs_dwarf2dbg:
|
dwarf2dbg_convert_frag (fragP);
|
dwarf2dbg_convert_frag (fragP);
|
break;
|
break;
|
|
|
case rs_machine_dependent:
|
case rs_machine_dependent:
|
md_convert_frag (stdoutput, sec, fragP);
|
md_convert_frag (stdoutput, sec, fragP);
|
|
|
gas_assert (fragP->fr_next == NULL
|
gas_assert (fragP->fr_next == NULL
|
|| ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address)
|
|| ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address)
|
== fragP->fr_fix));
|
== fragP->fr_fix));
|
|
|
/* After md_convert_frag, we make the frag into a ".space 0".
|
/* After md_convert_frag, we make the frag into a ".space 0".
|
md_convert_frag() should set up any fixSs and constants
|
md_convert_frag() should set up any fixSs and constants
|
required. */
|
required. */
|
frag_wane (fragP);
|
frag_wane (fragP);
|
break;
|
break;
|
|
|
#ifndef WORKING_DOT_WORD
|
#ifndef WORKING_DOT_WORD
|
case rs_broken_word:
|
case rs_broken_word:
|
{
|
{
|
struct broken_word *lie;
|
struct broken_word *lie;
|
|
|
if (fragP->fr_subtype)
|
if (fragP->fr_subtype)
|
{
|
{
|
fragP->fr_fix += md_short_jump_size;
|
fragP->fr_fix += md_short_jump_size;
|
for (lie = (struct broken_word *) (fragP->fr_symbol);
|
for (lie = (struct broken_word *) (fragP->fr_symbol);
|
lie && lie->dispfrag == fragP;
|
lie && lie->dispfrag == fragP;
|
lie = lie->next_broken_word)
|
lie = lie->next_broken_word)
|
if (lie->added == 1)
|
if (lie->added == 1)
|
fragP->fr_fix += md_long_jump_size;
|
fragP->fr_fix += md_long_jump_size;
|
}
|
}
|
frag_wane (fragP);
|
frag_wane (fragP);
|
}
|
}
|
break;
|
break;
|
#endif
|
#endif
|
|
|
default:
|
default:
|
BAD_CASE (fragP->fr_type);
|
BAD_CASE (fragP->fr_type);
|
break;
|
break;
|
}
|
}
|
#ifdef md_frag_check
|
#ifdef md_frag_check
|
md_frag_check (fragP);
|
md_frag_check (fragP);
|
#endif
|
#endif
|
}
|
}
|
|
|
struct relax_seg_info
|
struct relax_seg_info
|
{
|
{
|
int pass;
|
int pass;
|
int changed;
|
int changed;
|
};
|
};
|
|
|
static void
|
static void
|
relax_seg (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *xxx)
|
relax_seg (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *xxx)
|
{
|
{
|
segment_info_type *seginfo = seg_info (sec);
|
segment_info_type *seginfo = seg_info (sec);
|
struct relax_seg_info *info = (struct relax_seg_info *) xxx;
|
struct relax_seg_info *info = (struct relax_seg_info *) xxx;
|
|
|
if (seginfo && seginfo->frchainP
|
if (seginfo && seginfo->frchainP
|
&& relax_segment (seginfo->frchainP->frch_root, sec, info->pass))
|
&& relax_segment (seginfo->frchainP->frch_root, sec, info->pass))
|
info->changed = 1;
|
info->changed = 1;
|
}
|
}
|
|
|
static void
|
static void
|
size_seg (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED)
|
size_seg (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED)
|
{
|
{
|
flagword flags;
|
flagword flags;
|
fragS *fragp;
|
fragS *fragp;
|
segment_info_type *seginfo;
|
segment_info_type *seginfo;
|
int x;
|
int x;
|
valueT size, newsize;
|
valueT size, newsize;
|
|
|
subseg_change (sec, 0);
|
subseg_change (sec, 0);
|
|
|
seginfo = seg_info (sec);
|
seginfo = seg_info (sec);
|
if (seginfo && seginfo->frchainP)
|
if (seginfo && seginfo->frchainP)
|
{
|
{
|
for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next)
|
for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next)
|
cvt_frag_to_fill (sec, fragp);
|
cvt_frag_to_fill (sec, fragp);
|
for (fragp = seginfo->frchainP->frch_root;
|
for (fragp = seginfo->frchainP->frch_root;
|
fragp->fr_next;
|
fragp->fr_next;
|
fragp = fragp->fr_next)
|
fragp = fragp->fr_next)
|
/* Walk to last elt. */
|
/* Walk to last elt. */
|
;
|
;
|
size = fragp->fr_address + fragp->fr_fix;
|
size = fragp->fr_address + fragp->fr_fix;
|
}
|
}
|
else
|
else
|
size = 0;
|
size = 0;
|
|
|
flags = bfd_get_section_flags (abfd, sec);
|
flags = bfd_get_section_flags (abfd, sec);
|
if (size == 0 && bfd_get_section_size (sec) != 0 &&
|
if (size == 0 && bfd_get_section_size (sec) != 0 &&
|
(flags & SEC_HAS_CONTENTS) != 0)
|
(flags & SEC_HAS_CONTENTS) != 0)
|
return;
|
return;
|
|
|
if (size > 0 && ! seginfo->bss)
|
if (size > 0 && ! seginfo->bss)
|
flags |= SEC_HAS_CONTENTS;
|
flags |= SEC_HAS_CONTENTS;
|
|
|
flags &= ~SEC_RELOC;
|
flags &= ~SEC_RELOC;
|
x = bfd_set_section_flags (abfd, sec, flags);
|
x = bfd_set_section_flags (abfd, sec, flags);
|
gas_assert (x);
|
gas_assert (x);
|
|
|
newsize = md_section_align (sec, size);
|
newsize = md_section_align (sec, size);
|
x = bfd_set_section_size (abfd, sec, newsize);
|
x = bfd_set_section_size (abfd, sec, newsize);
|
gas_assert (x);
|
gas_assert (x);
|
|
|
/* If the size had to be rounded up, add some padding in the last
|
/* If the size had to be rounded up, add some padding in the last
|
non-empty frag. */
|
non-empty frag. */
|
gas_assert (newsize >= size);
|
gas_assert (newsize >= size);
|
if (size != newsize)
|
if (size != newsize)
|
{
|
{
|
fragS *last = seginfo->frchainP->frch_last;
|
fragS *last = seginfo->frchainP->frch_last;
|
fragp = seginfo->frchainP->frch_root;
|
fragp = seginfo->frchainP->frch_root;
|
while (fragp->fr_next != last)
|
while (fragp->fr_next != last)
|
fragp = fragp->fr_next;
|
fragp = fragp->fr_next;
|
last->fr_address = size;
|
last->fr_address = size;
|
if ((newsize - size) % fragp->fr_var == 0)
|
if ((newsize - size) % fragp->fr_var == 0)
|
fragp->fr_offset += (newsize - size) / fragp->fr_var;
|
fragp->fr_offset += (newsize - size) / fragp->fr_var;
|
else
|
else
|
/* If we hit this abort, it's likely due to subsegs_finish not
|
/* If we hit this abort, it's likely due to subsegs_finish not
|
providing sufficient alignment on the last frag, and the
|
providing sufficient alignment on the last frag, and the
|
machine dependent code using alignment frags with fr_var
|
machine dependent code using alignment frags with fr_var
|
greater than 1. */
|
greater than 1. */
|
abort ();
|
abort ();
|
}
|
}
|
|
|
#ifdef tc_frob_section
|
#ifdef tc_frob_section
|
tc_frob_section (sec);
|
tc_frob_section (sec);
|
#endif
|
#endif
|
#ifdef obj_frob_section
|
#ifdef obj_frob_section
|
obj_frob_section (sec);
|
obj_frob_section (sec);
|
#endif
|
#endif
|
}
|
}
|
|
|
#ifdef DEBUG2
|
#ifdef DEBUG2
|
static void
|
static void
|
dump_section_relocs (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, FILE *stream)
|
dump_section_relocs (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, FILE *stream)
|
{
|
{
|
segment_info_type *seginfo = seg_info (sec);
|
segment_info_type *seginfo = seg_info (sec);
|
fixS *fixp = seginfo->fix_root;
|
fixS *fixp = seginfo->fix_root;
|
|
|
if (!fixp)
|
if (!fixp)
|
return;
|
return;
|
|
|
fprintf (stream, "sec %s relocs:\n", sec->name);
|
fprintf (stream, "sec %s relocs:\n", sec->name);
|
while (fixp)
|
while (fixp)
|
{
|
{
|
symbolS *s = fixp->fx_addsy;
|
symbolS *s = fixp->fx_addsy;
|
|
|
fprintf (stream, " %08lx: type %d ", (unsigned long) fixp,
|
fprintf (stream, " %08lx: type %d ", (unsigned long) fixp,
|
(int) fixp->fx_r_type);
|
(int) fixp->fx_r_type);
|
if (s == NULL)
|
if (s == NULL)
|
fprintf (stream, "no sym\n");
|
fprintf (stream, "no sym\n");
|
else
|
else
|
{
|
{
|
print_symbol_value_1 (stream, s);
|
print_symbol_value_1 (stream, s);
|
fprintf (stream, "\n");
|
fprintf (stream, "\n");
|
}
|
}
|
fixp = fixp->fx_next;
|
fixp = fixp->fx_next;
|
}
|
}
|
}
|
}
|
#else
|
#else
|
#define dump_section_relocs(ABFD,SEC,STREAM) ((void) 0)
|
#define dump_section_relocs(ABFD,SEC,STREAM) ((void) 0)
|
#endif
|
#endif
|
|
|
#ifndef EMIT_SECTION_SYMBOLS
|
#ifndef EMIT_SECTION_SYMBOLS
|
#define EMIT_SECTION_SYMBOLS 1
|
#define EMIT_SECTION_SYMBOLS 1
|
#endif
|
#endif
|
|
|
/* Resolve U.A.OFFSET_SYM and U.A.SYM fields of RELOC_LIST entries,
|
/* Resolve U.A.OFFSET_SYM and U.A.SYM fields of RELOC_LIST entries,
|
and check for validity. Convert RELOC_LIST from using U.A fields
|
and check for validity. Convert RELOC_LIST from using U.A fields
|
to U.B fields. */
|
to U.B fields. */
|
static void
|
static void
|
resolve_reloc_expr_symbols (void)
|
resolve_reloc_expr_symbols (void)
|
{
|
{
|
|
bfd_vma addr_mask = 1;
|
struct reloc_list *r;
|
struct reloc_list *r;
|
|
|
|
/* Avoid a shift by the width of type. */
|
|
addr_mask <<= bfd_arch_bits_per_address (stdoutput) - 1;
|
|
addr_mask <<= 1;
|
|
addr_mask -= 1;
|
|
|
for (r = reloc_list; r; r = r->next)
|
for (r = reloc_list; r; r = r->next)
|
{
|
{
|
|
reloc_howto_type *howto = r->u.a.howto;
|
expressionS *symval;
|
expressionS *symval;
|
symbolS *sym;
|
symbolS *sym;
|
bfd_vma offset, addend;
|
bfd_vma offset, addend;
|
asection *sec;
|
asection *sec;
|
reloc_howto_type *howto;
|
|
|
|
resolve_symbol_value (r->u.a.offset_sym);
|
resolve_symbol_value (r->u.a.offset_sym);
|
symval = symbol_get_value_expression (r->u.a.offset_sym);
|
symval = symbol_get_value_expression (r->u.a.offset_sym);
|
|
|
offset = 0;
|
offset = 0;
|
sym = NULL;
|
sym = NULL;
|
if (symval->X_op == O_constant)
|
if (symval->X_op == O_constant)
|
sym = r->u.a.offset_sym;
|
sym = r->u.a.offset_sym;
|
else if (symval->X_op == O_symbol)
|
else if (symval->X_op == O_symbol)
|
{
|
{
|
sym = symval->X_add_symbol;
|
sym = symval->X_add_symbol;
|
offset = symval->X_add_number;
|
offset = symval->X_add_number;
|
symval = symbol_get_value_expression (symval->X_add_symbol);
|
symval = symbol_get_value_expression (symval->X_add_symbol);
|
}
|
}
|
if (sym == NULL
|
if (sym == NULL
|
|| symval->X_op != O_constant
|
|| symval->X_op != O_constant
|
|| (sec = S_GET_SEGMENT (sym)) == NULL
|
|| (sec = S_GET_SEGMENT (sym)) == NULL
|
|| !SEG_NORMAL (sec))
|
|| !SEG_NORMAL (sec))
|
{
|
{
|
as_bad_where (r->file, r->line, _("invalid offset expression"));
|
as_bad_where (r->file, r->line, _("invalid offset expression"));
|
sec = NULL;
|
sec = NULL;
|
}
|
}
|
else
|
else
|
offset += S_GET_VALUE (sym);
|
offset += S_GET_VALUE (sym);
|
|
|
sym = NULL;
|
sym = NULL;
|
addend = r->u.a.addend;
|
addend = r->u.a.addend;
|
if (r->u.a.sym != NULL)
|
if (r->u.a.sym != NULL)
|
{
|
{
|
resolve_symbol_value (r->u.a.sym);
|
resolve_symbol_value (r->u.a.sym);
|
symval = symbol_get_value_expression (r->u.a.sym);
|
symval = symbol_get_value_expression (r->u.a.sym);
|
if (symval->X_op == O_constant)
|
if (symval->X_op == O_constant)
|
sym = r->u.a.sym;
|
sym = r->u.a.sym;
|
else if (symval->X_op == O_symbol)
|
else if (symval->X_op == O_symbol)
|
{
|
{
|
sym = symval->X_add_symbol;
|
sym = symval->X_add_symbol;
|
addend += symval->X_add_number;
|
addend += symval->X_add_number;
|
symval = symbol_get_value_expression (symval->X_add_symbol);
|
symval = symbol_get_value_expression (symval->X_add_symbol);
|
}
|
}
|
if (symval->X_op != O_constant)
|
if (symval->X_op != O_constant)
|
{
|
{
|
as_bad_where (r->file, r->line, _("invalid reloc expression"));
|
as_bad_where (r->file, r->line, _("invalid reloc expression"));
|
sec = NULL;
|
sec = NULL;
|
}
|
}
|
else if (sym != NULL)
|
else if (sym != NULL)
|
{
|
{
|
if (S_IS_LOCAL (sym) && !symbol_section_p (sym))
|
/* Convert relocs against local symbols to refer to the
|
|
corresponding section symbol plus offset instead. Keep
|
|
PC-relative relocs of the REL variety intact though to
|
|
prevent the offset from overflowing the relocated field,
|
|
unless it has enough bits to cover the whole address
|
|
space. */
|
|
if (S_IS_LOCAL (sym) && !symbol_section_p (sym)
|
|
&& !(howto->partial_inplace
|
|
&& howto->pc_relative
|
|
&& howto->src_mask != addr_mask))
|
{
|
{
|
asection *symsec = S_GET_SEGMENT (sym);
|
asection *symsec = S_GET_SEGMENT (sym);
|
if (!(((symsec->flags & SEC_MERGE) != 0
|
if (!(((symsec->flags & SEC_MERGE) != 0
|
&& addend != 0)
|
&& addend != 0)
|
|| (symsec->flags & SEC_THREAD_LOCAL) != 0))
|
|| (symsec->flags & SEC_THREAD_LOCAL) != 0))
|
{
|
{
|
addend += S_GET_VALUE (sym);
|
addend += S_GET_VALUE (sym);
|
sym = section_symbol (symsec);
|
sym = section_symbol (symsec);
|
}
|
}
|
}
|
}
|
symbol_mark_used_in_reloc (sym);
|
symbol_mark_used_in_reloc (sym);
|
}
|
}
|
}
|
}
|
if (sym == NULL)
|
if (sym == NULL)
|
{
|
{
|
if (abs_section_sym == NULL)
|
if (abs_section_sym == NULL)
|
abs_section_sym = section_symbol (absolute_section);
|
abs_section_sym = section_symbol (absolute_section);
|
sym = abs_section_sym;
|
sym = abs_section_sym;
|
}
|
}
|
|
|
howto = r->u.a.howto;
|
|
|
|
r->u.b.sec = sec;
|
r->u.b.sec = sec;
|
r->u.b.s = symbol_get_bfdsym (sym);
|
r->u.b.s = symbol_get_bfdsym (sym);
|
r->u.b.r.sym_ptr_ptr = &r->u.b.s;
|
r->u.b.r.sym_ptr_ptr = &r->u.b.s;
|
r->u.b.r.address = offset;
|
r->u.b.r.address = offset;
|
r->u.b.r.addend = addend;
|
r->u.b.r.addend = addend;
|
r->u.b.r.howto = howto;
|
r->u.b.r.howto = howto;
|
}
|
}
|
}
|
}
|
|
|
/* This pass over fixups decides whether symbols can be replaced with
|
/* This pass over fixups decides whether symbols can be replaced with
|
section symbols. */
|
section symbols. */
|
|
|
static void
|
static void
|
adjust_reloc_syms (bfd *abfd ATTRIBUTE_UNUSED,
|
adjust_reloc_syms (bfd *abfd ATTRIBUTE_UNUSED,
|
asection *sec,
|
asection *sec,
|
void *xxx ATTRIBUTE_UNUSED)
|
void *xxx ATTRIBUTE_UNUSED)
|
{
|
{
|
segment_info_type *seginfo = seg_info (sec);
|
segment_info_type *seginfo = seg_info (sec);
|
fixS *fixp;
|
fixS *fixp;
|
|
|
if (seginfo == NULL)
|
if (seginfo == NULL)
|
return;
|
return;
|
|
|
dump_section_relocs (abfd, sec, stderr);
|
dump_section_relocs (abfd, sec, stderr);
|
|
|
for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
|
for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
|
if (fixp->fx_done)
|
if (fixp->fx_done)
|
/* Ignore it. */
|
/* Ignore it. */
|
;
|
;
|
else if (fixp->fx_addsy)
|
else if (fixp->fx_addsy)
|
{
|
{
|
symbolS *sym;
|
symbolS *sym;
|
asection *symsec;
|
asection *symsec;
|
|
|
#ifdef DEBUG5
|
#ifdef DEBUG5
|
fprintf (stderr, "\n\nadjusting fixup:\n");
|
fprintf (stderr, "\n\nadjusting fixup:\n");
|
print_fixup (fixp);
|
print_fixup (fixp);
|
#endif
|
#endif
|
|
|
sym = fixp->fx_addsy;
|
sym = fixp->fx_addsy;
|
|
|
/* All symbols should have already been resolved at this
|
/* All symbols should have already been resolved at this
|
point. It is possible to see unresolved expression
|
point. It is possible to see unresolved expression
|
symbols, though, since they are not in the regular symbol
|
symbols, though, since they are not in the regular symbol
|
table. */
|
table. */
|
resolve_symbol_value (sym);
|
resolve_symbol_value (sym);
|
|
|
if (fixp->fx_subsy != NULL)
|
if (fixp->fx_subsy != NULL)
|
resolve_symbol_value (fixp->fx_subsy);
|
resolve_symbol_value (fixp->fx_subsy);
|
|
|
/* If this symbol is equated to an undefined or common symbol,
|
/* If this symbol is equated to an undefined or common symbol,
|
convert the fixup to being against that symbol. */
|
convert the fixup to being against that symbol. */
|
while (symbol_equated_reloc_p (sym)
|
while (symbol_equated_reloc_p (sym)
|
|| S_IS_WEAKREFR (sym))
|
|| S_IS_WEAKREFR (sym))
|
{
|
{
|
symbolS *newsym = symbol_get_value_expression (sym)->X_add_symbol;
|
symbolS *newsym = symbol_get_value_expression (sym)->X_add_symbol;
|
if (sym == newsym)
|
if (sym == newsym)
|
break;
|
break;
|
fixp->fx_offset += symbol_get_value_expression (sym)->X_add_number;
|
fixp->fx_offset += symbol_get_value_expression (sym)->X_add_number;
|
fixp->fx_addsy = newsym;
|
fixp->fx_addsy = newsym;
|
sym = newsym;
|
sym = newsym;
|
}
|
}
|
|
|
if (symbol_mri_common_p (sym))
|
if (symbol_mri_common_p (sym))
|
{
|
{
|
fixp->fx_offset += S_GET_VALUE (sym);
|
fixp->fx_offset += S_GET_VALUE (sym);
|
fixp->fx_addsy = symbol_get_value_expression (sym)->X_add_symbol;
|
fixp->fx_addsy = symbol_get_value_expression (sym)->X_add_symbol;
|
continue;
|
continue;
|
}
|
}
|
|
|
/* If the symbol is undefined, common, weak, or global (ELF
|
/* If the symbol is undefined, common, weak, or global (ELF
|
shared libs), we can't replace it with the section symbol. */
|
shared libs), we can't replace it with the section symbol. */
|
if (S_FORCE_RELOC (fixp->fx_addsy, 1))
|
if (S_FORCE_RELOC (fixp->fx_addsy, 1))
|
continue;
|
continue;
|
|
|
/* Is there some other (target cpu dependent) reason we can't adjust
|
/* Is there some other (target cpu dependent) reason we can't adjust
|
this one? (E.g. relocations involving function addresses on
|
this one? (E.g. relocations involving function addresses on
|
the PA. */
|
the PA. */
|
#ifdef tc_fix_adjustable
|
#ifdef tc_fix_adjustable
|
if (! tc_fix_adjustable (fixp))
|
if (! tc_fix_adjustable (fixp))
|
continue;
|
continue;
|
#endif
|
#endif
|
|
|
/* Since we're reducing to section symbols, don't attempt to reduce
|
/* Since we're reducing to section symbols, don't attempt to reduce
|
anything that's already using one. */
|
anything that's already using one. */
|
if (symbol_section_p (sym))
|
if (symbol_section_p (sym))
|
continue;
|
continue;
|
|
|
symsec = S_GET_SEGMENT (sym);
|
symsec = S_GET_SEGMENT (sym);
|
if (symsec == NULL)
|
if (symsec == NULL)
|
abort ();
|
abort ();
|
|
|
if (bfd_is_abs_section (symsec))
|
if (bfd_is_abs_section (symsec))
|
{
|
{
|
/* The fixup_segment routine normally will not use this
|
/* The fixup_segment routine normally will not use this
|
symbol in a relocation. */
|
symbol in a relocation. */
|
continue;
|
continue;
|
}
|
}
|
|
|
/* Don't try to reduce relocs which refer to non-local symbols
|
/* Don't try to reduce relocs which refer to non-local symbols
|
in .linkonce sections. It can lead to confusion when a
|
in .linkonce sections. It can lead to confusion when a
|
debugging section refers to a .linkonce section. I hope
|
debugging section refers to a .linkonce section. I hope
|
this will always be correct. */
|
this will always be correct. */
|
if (symsec != sec && ! S_IS_LOCAL (sym))
|
if (symsec != sec && ! S_IS_LOCAL (sym))
|
{
|
{
|
if ((symsec->flags & SEC_LINK_ONCE) != 0
|
if ((symsec->flags & SEC_LINK_ONCE) != 0
|
|| (IS_ELF
|
|| (IS_ELF
|
/* The GNU toolchain uses an extension for ELF: a
|
/* The GNU toolchain uses an extension for ELF: a
|
section beginning with the magic string
|
section beginning with the magic string
|
.gnu.linkonce is a linkonce section. */
|
.gnu.linkonce is a linkonce section. */
|
&& strncmp (segment_name (symsec), ".gnu.linkonce",
|
&& strncmp (segment_name (symsec), ".gnu.linkonce",
|
sizeof ".gnu.linkonce" - 1) == 0))
|
sizeof ".gnu.linkonce" - 1) == 0))
|
continue;
|
continue;
|
}
|
}
|
|
|
/* Never adjust a reloc against local symbol in a merge section
|
/* Never adjust a reloc against local symbol in a merge section
|
with non-zero addend. */
|
with non-zero addend. */
|
if ((symsec->flags & SEC_MERGE) != 0
|
if ((symsec->flags & SEC_MERGE) != 0
|
&& (fixp->fx_offset != 0 || fixp->fx_subsy != NULL))
|
&& (fixp->fx_offset != 0 || fixp->fx_subsy != NULL))
|
continue;
|
continue;
|
|
|
/* Never adjust a reloc against TLS local symbol. */
|
/* Never adjust a reloc against TLS local symbol. */
|
if ((symsec->flags & SEC_THREAD_LOCAL) != 0)
|
if ((symsec->flags & SEC_THREAD_LOCAL) != 0)
|
continue;
|
continue;
|
|
|
/* We refetch the segment when calling section_symbol, rather
|
/* We refetch the segment when calling section_symbol, rather
|
than using symsec, because S_GET_VALUE may wind up changing
|
than using symsec, because S_GET_VALUE may wind up changing
|
the section when it calls resolve_symbol_value. */
|
the section when it calls resolve_symbol_value. */
|
fixp->fx_offset += S_GET_VALUE (sym);
|
fixp->fx_offset += S_GET_VALUE (sym);
|
fixp->fx_addsy = section_symbol (S_GET_SEGMENT (sym));
|
fixp->fx_addsy = section_symbol (S_GET_SEGMENT (sym));
|
#ifdef DEBUG5
|
#ifdef DEBUG5
|
fprintf (stderr, "\nadjusted fixup:\n");
|
fprintf (stderr, "\nadjusted fixup:\n");
|
print_fixup (fixp);
|
print_fixup (fixp);
|
#endif
|
#endif
|
}
|
}
|
|
|
dump_section_relocs (abfd, sec, stderr);
|
dump_section_relocs (abfd, sec, stderr);
|
}
|
}
|
|
|
/* fixup_segment()
|
/* fixup_segment()
|
|
|
Go through all the fixS's in a segment and see which ones can be
|
Go through all the fixS's in a segment and see which ones can be
|
handled now. (These consist of fixS where we have since discovered
|
handled now. (These consist of fixS where we have since discovered
|
the value of a symbol, or the address of the frag involved.)
|
the value of a symbol, or the address of the frag involved.)
|
For each one, call md_apply_fix to put the fix into the frag data.
|
For each one, call md_apply_fix to put the fix into the frag data.
|
|
|
Result is a count of how many relocation structs will be needed to
|
Result is a count of how many relocation structs will be needed to
|
handle the remaining fixS's that we couldn't completely handle here.
|
handle the remaining fixS's that we couldn't completely handle here.
|
These will be output later by emit_relocations(). */
|
These will be output later by emit_relocations(). */
|
|
|
static long
|
static long
|
fixup_segment (fixS *fixP, segT this_segment)
|
fixup_segment (fixS *fixP, segT this_segment)
|
{
|
{
|
long seg_reloc_count = 0;
|
long seg_reloc_count = 0;
|
valueT add_number;
|
valueT add_number;
|
fragS *fragP;
|
fragS *fragP;
|
segT add_symbol_segment = absolute_section;
|
segT add_symbol_segment = absolute_section;
|
|
|
if (fixP != NULL && abs_section_sym == NULL)
|
if (fixP != NULL && abs_section_sym == NULL)
|
abs_section_sym = section_symbol (absolute_section);
|
abs_section_sym = section_symbol (absolute_section);
|
|
|
/* If the linker is doing the relaxing, we must not do any fixups.
|
/* If the linker is doing the relaxing, we must not do any fixups.
|
|
|
Well, strictly speaking that's not true -- we could do any that
|
Well, strictly speaking that's not true -- we could do any that
|
are PC-relative and don't cross regions that could change size.
|
are PC-relative and don't cross regions that could change size.
|
And for the i960 we might be able to turn callx/callj into bal
|
And for the i960 we might be able to turn callx/callj into bal
|
anyways in cases where we know the maximum displacement. */
|
anyways in cases where we know the maximum displacement. */
|
if (linkrelax && TC_LINKRELAX_FIXUP (this_segment))
|
if (linkrelax && TC_LINKRELAX_FIXUP (this_segment))
|
{
|
{
|
for (; fixP; fixP = fixP->fx_next)
|
for (; fixP; fixP = fixP->fx_next)
|
if (!fixP->fx_done)
|
if (!fixP->fx_done)
|
{
|
{
|
if (fixP->fx_addsy == NULL)
|
if (fixP->fx_addsy == NULL)
|
{
|
{
|
/* There was no symbol required by this relocation.
|
/* There was no symbol required by this relocation.
|
However, BFD doesn't really handle relocations
|
However, BFD doesn't really handle relocations
|
without symbols well. So fake up a local symbol in
|
without symbols well. So fake up a local symbol in
|
the absolute section. */
|
the absolute section. */
|
fixP->fx_addsy = abs_section_sym;
|
fixP->fx_addsy = abs_section_sym;
|
}
|
}
|
symbol_mark_used_in_reloc (fixP->fx_addsy);
|
symbol_mark_used_in_reloc (fixP->fx_addsy);
|
if (fixP->fx_subsy != NULL)
|
if (fixP->fx_subsy != NULL)
|
symbol_mark_used_in_reloc (fixP->fx_subsy);
|
symbol_mark_used_in_reloc (fixP->fx_subsy);
|
seg_reloc_count++;
|
seg_reloc_count++;
|
}
|
}
|
TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count);
|
TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count);
|
return seg_reloc_count;
|
return seg_reloc_count;
|
}
|
}
|
|
|
for (; fixP; fixP = fixP->fx_next)
|
for (; fixP; fixP = fixP->fx_next)
|
{
|
{
|
#ifdef DEBUG5
|
#ifdef DEBUG5
|
fprintf (stderr, "\nprocessing fixup:\n");
|
fprintf (stderr, "\nprocessing fixup:\n");
|
print_fixup (fixP);
|
print_fixup (fixP);
|
#endif
|
#endif
|
|
|
fragP = fixP->fx_frag;
|
fragP = fixP->fx_frag;
|
know (fragP);
|
know (fragP);
|
#ifdef TC_VALIDATE_FIX
|
#ifdef TC_VALIDATE_FIX
|
TC_VALIDATE_FIX (fixP, this_segment, skip);
|
TC_VALIDATE_FIX (fixP, this_segment, skip);
|
#endif
|
#endif
|
add_number = fixP->fx_offset;
|
add_number = fixP->fx_offset;
|
|
|
if (fixP->fx_addsy != NULL)
|
if (fixP->fx_addsy != NULL)
|
add_symbol_segment = S_GET_SEGMENT (fixP->fx_addsy);
|
add_symbol_segment = S_GET_SEGMENT (fixP->fx_addsy);
|
|
|
if (fixP->fx_subsy != NULL)
|
if (fixP->fx_subsy != NULL)
|
{
|
{
|
segT sub_symbol_segment;
|
segT sub_symbol_segment;
|
resolve_symbol_value (fixP->fx_subsy);
|
resolve_symbol_value (fixP->fx_subsy);
|
sub_symbol_segment = S_GET_SEGMENT (fixP->fx_subsy);
|
sub_symbol_segment = S_GET_SEGMENT (fixP->fx_subsy);
|
if (fixP->fx_addsy != NULL
|
if (fixP->fx_addsy != NULL
|
&& sub_symbol_segment == add_symbol_segment
|
&& sub_symbol_segment == add_symbol_segment
|
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
|
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
|
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
|
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
|
&& !TC_FORCE_RELOCATION_SUB_SAME (fixP, add_symbol_segment))
|
&& !TC_FORCE_RELOCATION_SUB_SAME (fixP, add_symbol_segment))
|
{
|
{
|
add_number += S_GET_VALUE (fixP->fx_addsy);
|
add_number += S_GET_VALUE (fixP->fx_addsy);
|
add_number -= S_GET_VALUE (fixP->fx_subsy);
|
add_number -= S_GET_VALUE (fixP->fx_subsy);
|
fixP->fx_offset = add_number;
|
fixP->fx_offset = add_number;
|
fixP->fx_addsy = NULL;
|
fixP->fx_addsy = NULL;
|
fixP->fx_subsy = NULL;
|
fixP->fx_subsy = NULL;
|
#ifdef TC_M68K
|
#ifdef TC_M68K
|
/* See the comment below about 68k weirdness. */
|
/* See the comment below about 68k weirdness. */
|
fixP->fx_pcrel = 0;
|
fixP->fx_pcrel = 0;
|
#endif
|
#endif
|
}
|
}
|
else if (sub_symbol_segment == absolute_section
|
else if (sub_symbol_segment == absolute_section
|
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
|
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
|
&& !TC_FORCE_RELOCATION_SUB_ABS (fixP, add_symbol_segment))
|
&& !TC_FORCE_RELOCATION_SUB_ABS (fixP, add_symbol_segment))
|
{
|
{
|
add_number -= S_GET_VALUE (fixP->fx_subsy);
|
add_number -= S_GET_VALUE (fixP->fx_subsy);
|
fixP->fx_offset = add_number;
|
fixP->fx_offset = add_number;
|
fixP->fx_subsy = NULL;
|
fixP->fx_subsy = NULL;
|
}
|
}
|
else if (sub_symbol_segment == this_segment
|
else if (sub_symbol_segment == this_segment
|
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
|
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
|
&& !TC_FORCE_RELOCATION_SUB_LOCAL (fixP, add_symbol_segment))
|
&& !TC_FORCE_RELOCATION_SUB_LOCAL (fixP, add_symbol_segment))
|
{
|
{
|
add_number -= S_GET_VALUE (fixP->fx_subsy);
|
add_number -= S_GET_VALUE (fixP->fx_subsy);
|
fixP->fx_offset = (add_number + fixP->fx_dot_value
|
fixP->fx_offset = (add_number + fixP->fx_dot_value
|
+ fixP->fx_frag->fr_address);
|
+ fixP->fx_frag->fr_address);
|
|
|
/* Make it pc-relative. If the back-end code has not
|
/* Make it pc-relative. If the back-end code has not
|
selected a pc-relative reloc, cancel the adjustment
|
selected a pc-relative reloc, cancel the adjustment
|
we do later on all pc-relative relocs. */
|
we do later on all pc-relative relocs. */
|
if (0
|
if (0
|
#ifdef TC_M68K
|
#ifdef TC_M68K
|
/* Do this for m68k even if it's already described
|
/* Do this for m68k even if it's already described
|
as pc-relative. On the m68k, an operand of
|
as pc-relative. On the m68k, an operand of
|
"pc@(foo-.-2)" should address "foo" in a
|
"pc@(foo-.-2)" should address "foo" in a
|
pc-relative mode. */
|
pc-relative mode. */
|
|| 1
|
|| 1
|
#endif
|
#endif
|
|| !fixP->fx_pcrel)
|
|| !fixP->fx_pcrel)
|
add_number += MD_PCREL_FROM_SECTION (fixP, this_segment);
|
add_number += MD_PCREL_FROM_SECTION (fixP, this_segment);
|
fixP->fx_subsy = NULL;
|
fixP->fx_subsy = NULL;
|
fixP->fx_pcrel = 1;
|
fixP->fx_pcrel = 1;
|
}
|
}
|
else if (!TC_VALIDATE_FIX_SUB (fixP, add_symbol_segment))
|
else if (!TC_VALIDATE_FIX_SUB (fixP, add_symbol_segment))
|
{
|
{
|
if (!md_register_arithmetic
|
if (!md_register_arithmetic
|
&& (add_symbol_segment == reg_section
|
&& (add_symbol_segment == reg_section
|
|| sub_symbol_segment == reg_section))
|
|| sub_symbol_segment == reg_section))
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
_("register value used as expression"));
|
_("register value used as expression"));
|
else
|
else
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
_("can't resolve `%s' {%s section} - `%s' {%s section}"),
|
_("can't resolve `%s' {%s section} - `%s' {%s section}"),
|
fixP->fx_addsy ? S_GET_NAME (fixP->fx_addsy) : "0",
|
fixP->fx_addsy ? S_GET_NAME (fixP->fx_addsy) : "0",
|
segment_name (add_symbol_segment),
|
segment_name (add_symbol_segment),
|
S_GET_NAME (fixP->fx_subsy),
|
S_GET_NAME (fixP->fx_subsy),
|
segment_name (sub_symbol_segment));
|
segment_name (sub_symbol_segment));
|
}
|
}
|
}
|
}
|
|
|
if (fixP->fx_addsy)
|
if (fixP->fx_addsy)
|
{
|
{
|
if (add_symbol_segment == this_segment
|
if (add_symbol_segment == this_segment
|
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
|
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
|
&& !TC_FORCE_RELOCATION_LOCAL (fixP))
|
&& !TC_FORCE_RELOCATION_LOCAL (fixP))
|
{
|
{
|
/* This fixup was made when the symbol's segment was
|
/* This fixup was made when the symbol's segment was
|
SEG_UNKNOWN, but it is now in the local segment.
|
SEG_UNKNOWN, but it is now in the local segment.
|
So we know how to do the address without relocation. */
|
So we know how to do the address without relocation. */
|
add_number += S_GET_VALUE (fixP->fx_addsy);
|
add_number += S_GET_VALUE (fixP->fx_addsy);
|
fixP->fx_offset = add_number;
|
fixP->fx_offset = add_number;
|
if (fixP->fx_pcrel)
|
if (fixP->fx_pcrel)
|
add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment);
|
add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment);
|
fixP->fx_addsy = NULL;
|
fixP->fx_addsy = NULL;
|
fixP->fx_pcrel = 0;
|
fixP->fx_pcrel = 0;
|
}
|
}
|
else if (add_symbol_segment == absolute_section
|
else if (add_symbol_segment == absolute_section
|
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
|
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
|
&& !TC_FORCE_RELOCATION_ABS (fixP))
|
&& !TC_FORCE_RELOCATION_ABS (fixP))
|
{
|
{
|
add_number += S_GET_VALUE (fixP->fx_addsy);
|
add_number += S_GET_VALUE (fixP->fx_addsy);
|
fixP->fx_offset = add_number;
|
fixP->fx_offset = add_number;
|
fixP->fx_addsy = NULL;
|
fixP->fx_addsy = NULL;
|
}
|
}
|
else if (add_symbol_segment != undefined_section
|
else if (add_symbol_segment != undefined_section
|
&& ! bfd_is_com_section (add_symbol_segment)
|
&& ! bfd_is_com_section (add_symbol_segment)
|
&& MD_APPLY_SYM_VALUE (fixP))
|
&& MD_APPLY_SYM_VALUE (fixP))
|
add_number += S_GET_VALUE (fixP->fx_addsy);
|
add_number += S_GET_VALUE (fixP->fx_addsy);
|
}
|
}
|
|
|
if (fixP->fx_pcrel)
|
if (fixP->fx_pcrel)
|
{
|
{
|
add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment);
|
add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment);
|
if (!fixP->fx_done && fixP->fx_addsy == NULL)
|
if (!fixP->fx_done && fixP->fx_addsy == NULL)
|
{
|
{
|
/* There was no symbol required by this relocation.
|
/* There was no symbol required by this relocation.
|
However, BFD doesn't really handle relocations
|
However, BFD doesn't really handle relocations
|
without symbols well. So fake up a local symbol in
|
without symbols well. So fake up a local symbol in
|
the absolute section. */
|
the absolute section. */
|
fixP->fx_addsy = abs_section_sym;
|
fixP->fx_addsy = abs_section_sym;
|
}
|
}
|
}
|
}
|
|
|
if (!fixP->fx_done)
|
if (!fixP->fx_done)
|
md_apply_fix (fixP, &add_number, this_segment);
|
md_apply_fix (fixP, &add_number, this_segment);
|
|
|
if (!fixP->fx_done)
|
if (!fixP->fx_done)
|
{
|
{
|
++seg_reloc_count;
|
++seg_reloc_count;
|
if (fixP->fx_addsy == NULL)
|
if (fixP->fx_addsy == NULL)
|
fixP->fx_addsy = abs_section_sym;
|
fixP->fx_addsy = abs_section_sym;
|
symbol_mark_used_in_reloc (fixP->fx_addsy);
|
symbol_mark_used_in_reloc (fixP->fx_addsy);
|
if (fixP->fx_subsy != NULL)
|
if (fixP->fx_subsy != NULL)
|
symbol_mark_used_in_reloc (fixP->fx_subsy);
|
symbol_mark_used_in_reloc (fixP->fx_subsy);
|
}
|
}
|
|
|
if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && fixP->fx_size != 0)
|
if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && fixP->fx_size != 0)
|
{
|
{
|
if (fixP->fx_size < sizeof (valueT))
|
if (fixP->fx_size < sizeof (valueT))
|
{
|
{
|
valueT mask;
|
valueT mask;
|
|
|
mask = 0;
|
mask = 0;
|
mask--; /* Set all bits to one. */
|
mask--; /* Set all bits to one. */
|
mask <<= fixP->fx_size * 8 - (fixP->fx_signed ? 1 : 0);
|
mask <<= fixP->fx_size * 8 - (fixP->fx_signed ? 1 : 0);
|
if ((add_number & mask) != 0 && (add_number & mask) != mask)
|
if ((add_number & mask) != 0 && (add_number & mask) != mask)
|
{
|
{
|
char buf[50], buf2[50];
|
char buf[50], buf2[50];
|
sprint_value (buf, fragP->fr_address + fixP->fx_where);
|
sprint_value (buf, fragP->fr_address + fixP->fx_where);
|
if (add_number > 1000)
|
if (add_number > 1000)
|
sprint_value (buf2, add_number);
|
sprint_value (buf2, add_number);
|
else
|
else
|
sprintf (buf2, "%ld", (long) add_number);
|
sprintf (buf2, "%ld", (long) add_number);
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
_("value of %s too large for field of %d bytes at %s"),
|
_("value of %s too large for field of %d bytes at %s"),
|
buf2, fixP->fx_size, buf);
|
buf2, fixP->fx_size, buf);
|
} /* Generic error checking. */
|
} /* Generic error checking. */
|
}
|
}
|
#ifdef WARN_SIGNED_OVERFLOW_WORD
|
#ifdef WARN_SIGNED_OVERFLOW_WORD
|
/* Warn if a .word value is too large when treated as a signed
|
/* Warn if a .word value is too large when treated as a signed
|
number. We already know it is not too negative. This is to
|
number. We already know it is not too negative. This is to
|
catch over-large switches generated by gcc on the 68k. */
|
catch over-large switches generated by gcc on the 68k. */
|
if (!flag_signed_overflow_ok
|
if (!flag_signed_overflow_ok
|
&& fixP->fx_size == 2
|
&& fixP->fx_size == 2
|
&& add_number > 0x7fff)
|
&& add_number > 0x7fff)
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
_("signed .word overflow; switch may be too large; %ld at 0x%lx"),
|
_("signed .word overflow; switch may be too large; %ld at 0x%lx"),
|
(long) add_number,
|
(long) add_number,
|
(long) (fragP->fr_address + fixP->fx_where));
|
(long) (fragP->fr_address + fixP->fx_where));
|
#endif
|
#endif
|
} /* Not a bit fix. */
|
} /* Not a bit fix. */
|
|
|
#ifdef TC_VALIDATE_FIX
|
#ifdef TC_VALIDATE_FIX
|
skip: ATTRIBUTE_UNUSED_LABEL
|
skip: ATTRIBUTE_UNUSED_LABEL
|
;
|
;
|
#endif
|
#endif
|
#ifdef DEBUG5
|
#ifdef DEBUG5
|
fprintf (stderr, "result:\n");
|
fprintf (stderr, "result:\n");
|
print_fixup (fixP);
|
print_fixup (fixP);
|
#endif
|
#endif
|
} /* For each fixS in this segment. */
|
} /* For each fixS in this segment. */
|
|
|
TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count);
|
TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count);
|
return seg_reloc_count;
|
return seg_reloc_count;
|
}
|
}
|
|
|
static void
|
static void
|
fix_segment (bfd *abfd ATTRIBUTE_UNUSED,
|
fix_segment (bfd *abfd ATTRIBUTE_UNUSED,
|
asection *sec,
|
asection *sec,
|
void *xxx ATTRIBUTE_UNUSED)
|
void *xxx ATTRIBUTE_UNUSED)
|
{
|
{
|
segment_info_type *seginfo = seg_info (sec);
|
segment_info_type *seginfo = seg_info (sec);
|
|
|
fixup_segment (seginfo->fix_root, sec);
|
fixup_segment (seginfo->fix_root, sec);
|
}
|
}
|
|
|
static void
|
static void
|
install_reloc (asection *sec, arelent *reloc, fragS *fragp,
|
install_reloc (asection *sec, arelent *reloc, fragS *fragp,
|
char *file, unsigned int line)
|
char *file, unsigned int line)
|
{
|
{
|
char *err;
|
char *err;
|
bfd_reloc_status_type s;
|
bfd_reloc_status_type s;
|
asymbol *sym;
|
asymbol *sym;
|
|
|
if (reloc->sym_ptr_ptr != NULL
|
if (reloc->sym_ptr_ptr != NULL
|
&& (sym = *reloc->sym_ptr_ptr) != NULL
|
&& (sym = *reloc->sym_ptr_ptr) != NULL
|
&& (sym->flags & BSF_KEEP) == 0
|
&& (sym->flags & BSF_KEEP) == 0
|
&& ((sym->flags & BSF_SECTION_SYM) == 0
|
&& ((sym->flags & BSF_SECTION_SYM) == 0
|
|| (EMIT_SECTION_SYMBOLS
|
|| (EMIT_SECTION_SYMBOLS
|
&& !bfd_is_abs_section (sym->section))))
|
&& !bfd_is_abs_section (sym->section))))
|
as_bad_where (file, line, _("redefined symbol cannot be used on reloc"));
|
as_bad_where (file, line, _("redefined symbol cannot be used on reloc"));
|
|
|
s = bfd_install_relocation (stdoutput, reloc,
|
s = bfd_install_relocation (stdoutput, reloc,
|
fragp->fr_literal, fragp->fr_address,
|
fragp->fr_literal, fragp->fr_address,
|
sec, &err);
|
sec, &err);
|
switch (s)
|
switch (s)
|
{
|
{
|
case bfd_reloc_ok:
|
case bfd_reloc_ok:
|
break;
|
break;
|
case bfd_reloc_overflow:
|
case bfd_reloc_overflow:
|
as_bad_where (file, line, _("relocation overflow"));
|
as_bad_where (file, line, _("relocation overflow"));
|
break;
|
break;
|
case bfd_reloc_outofrange:
|
case bfd_reloc_outofrange:
|
as_bad_where (file, line, _("relocation out of range"));
|
as_bad_where (file, line, _("relocation out of range"));
|
break;
|
break;
|
default:
|
default:
|
as_fatal (_("%s:%u: bad return from bfd_install_relocation: %x"),
|
as_fatal (_("%s:%u: bad return from bfd_install_relocation: %x"),
|
file, line, s);
|
file, line, s);
|
}
|
}
|
}
|
}
|
|
|
static fragS *
|
static fragS *
|
get_frag_for_reloc (fragS *last_frag,
|
get_frag_for_reloc (fragS *last_frag,
|
const segment_info_type *seginfo,
|
const segment_info_type *seginfo,
|
const struct reloc_list *r)
|
const struct reloc_list *r)
|
{
|
{
|
fragS *f;
|
fragS *f;
|
|
|
for (f = last_frag; f != NULL; f = f->fr_next)
|
for (f = last_frag; f != NULL; f = f->fr_next)
|
if (f->fr_address <= r->u.b.r.address
|
if (f->fr_address <= r->u.b.r.address
|
&& r->u.b.r.address < f->fr_address + f->fr_fix)
|
&& r->u.b.r.address < f->fr_address + f->fr_fix)
|
return f;
|
return f;
|
|
|
for (f = seginfo->frchainP->frch_root; f != NULL; f = f->fr_next)
|
for (f = seginfo->frchainP->frch_root; f != NULL; f = f->fr_next)
|
if (f->fr_address <= r->u.b.r.address
|
if (f->fr_address <= r->u.b.r.address
|
&& r->u.b.r.address < f->fr_address + f->fr_fix)
|
&& r->u.b.r.address < f->fr_address + f->fr_fix)
|
return f;
|
return f;
|
|
|
as_bad_where (r->file, r->line,
|
as_bad_where (r->file, r->line,
|
_("reloc not within (fixed part of) section"));
|
_("reloc not within (fixed part of) section"));
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
static void
|
static void
|
write_relocs (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED)
|
write_relocs (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED)
|
{
|
{
|
segment_info_type *seginfo = seg_info (sec);
|
segment_info_type *seginfo = seg_info (sec);
|
unsigned int n;
|
unsigned int n;
|
struct reloc_list *my_reloc_list, **rp, *r;
|
struct reloc_list *my_reloc_list, **rp, *r;
|
arelent **relocs;
|
arelent **relocs;
|
fixS *fixp;
|
fixS *fixp;
|
fragS *last_frag;
|
fragS *last_frag;
|
|
|
/* If seginfo is NULL, we did not create this section; don't do
|
/* If seginfo is NULL, we did not create this section; don't do
|
anything with it. */
|
anything with it. */
|
if (seginfo == NULL)
|
if (seginfo == NULL)
|
return;
|
return;
|
|
|
n = 0;
|
n = 0;
|
for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
|
for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
|
if (!fixp->fx_done)
|
if (!fixp->fx_done)
|
n++;
|
n++;
|
|
|
#ifdef RELOC_EXPANSION_POSSIBLE
|
#ifdef RELOC_EXPANSION_POSSIBLE
|
n *= MAX_RELOC_EXPANSION;
|
n *= MAX_RELOC_EXPANSION;
|
#endif
|
#endif
|
|
|
/* Extract relocs for this section from reloc_list. */
|
/* Extract relocs for this section from reloc_list. */
|
rp = &reloc_list;
|
rp = &reloc_list;
|
my_reloc_list = NULL;
|
my_reloc_list = NULL;
|
while ((r = *rp) != NULL)
|
while ((r = *rp) != NULL)
|
{
|
{
|
if (r->u.b.sec == sec)
|
if (r->u.b.sec == sec)
|
{
|
{
|
*rp = r->next;
|
*rp = r->next;
|
r->next = my_reloc_list;
|
r->next = my_reloc_list;
|
my_reloc_list = r;
|
my_reloc_list = r;
|
n++;
|
n++;
|
}
|
}
|
else
|
else
|
rp = &r->next;
|
rp = &r->next;
|
}
|
}
|
|
|
relocs = (arelent **) xcalloc (n, sizeof (arelent *));
|
relocs = (arelent **) xcalloc (n, sizeof (arelent *));
|
|
|
n = 0;
|
n = 0;
|
r = my_reloc_list;
|
r = my_reloc_list;
|
last_frag = NULL;
|
last_frag = NULL;
|
for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next)
|
for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next)
|
{
|
{
|
int fx_size, slack;
|
int fx_size, slack;
|
offsetT loc;
|
offsetT loc;
|
arelent **reloc;
|
arelent **reloc;
|
#ifndef RELOC_EXPANSION_POSSIBLE
|
#ifndef RELOC_EXPANSION_POSSIBLE
|
arelent *rel;
|
arelent *rel;
|
|
|
reloc = &rel;
|
reloc = &rel;
|
#endif
|
#endif
|
|
|
if (fixp->fx_done)
|
if (fixp->fx_done)
|
continue;
|
continue;
|
|
|
fx_size = fixp->fx_size;
|
fx_size = fixp->fx_size;
|
slack = TC_FX_SIZE_SLACK (fixp);
|
slack = TC_FX_SIZE_SLACK (fixp);
|
if (slack > 0)
|
if (slack > 0)
|
fx_size = fx_size > slack ? fx_size - slack : 0;
|
fx_size = fx_size > slack ? fx_size - slack : 0;
|
loc = fixp->fx_where + fx_size;
|
loc = fixp->fx_where + fx_size;
|
if (slack >= 0 && loc > fixp->fx_frag->fr_fix)
|
if (slack >= 0 && loc > fixp->fx_frag->fr_fix)
|
as_bad_where (fixp->fx_file, fixp->fx_line,
|
as_bad_where (fixp->fx_file, fixp->fx_line,
|
_("internal error: fixup not contained within frag"));
|
_("internal error: fixup not contained within frag"));
|
|
|
#ifndef RELOC_EXPANSION_POSSIBLE
|
#ifndef RELOC_EXPANSION_POSSIBLE
|
*reloc = tc_gen_reloc (sec, fixp);
|
*reloc = tc_gen_reloc (sec, fixp);
|
#else
|
#else
|
reloc = tc_gen_reloc (sec, fixp);
|
reloc = tc_gen_reloc (sec, fixp);
|
#endif
|
#endif
|
|
|
while (*reloc)
|
while (*reloc)
|
{
|
{
|
while (r != NULL && r->u.b.r.address < (*reloc)->address)
|
while (r != NULL && r->u.b.r.address < (*reloc)->address)
|
{
|
{
|
fragS *f = get_frag_for_reloc (last_frag, seginfo, r);
|
fragS *f = get_frag_for_reloc (last_frag, seginfo, r);
|
if (f != NULL)
|
if (f != NULL)
|
{
|
{
|
last_frag = f;
|
last_frag = f;
|
relocs[n++] = &r->u.b.r;
|
relocs[n++] = &r->u.b.r;
|
install_reloc (sec, &r->u.b.r, f, r->file, r->line);
|
install_reloc (sec, &r->u.b.r, f, r->file, r->line);
|
}
|
}
|
r = r->next;
|
r = r->next;
|
}
|
}
|
relocs[n++] = *reloc;
|
relocs[n++] = *reloc;
|
install_reloc (sec, *reloc, fixp->fx_frag,
|
install_reloc (sec, *reloc, fixp->fx_frag,
|
fixp->fx_file, fixp->fx_line);
|
fixp->fx_file, fixp->fx_line);
|
#ifndef RELOC_EXPANSION_POSSIBLE
|
#ifndef RELOC_EXPANSION_POSSIBLE
|
break;
|
break;
|
#else
|
#else
|
reloc++;
|
reloc++;
|
#endif
|
#endif
|
}
|
}
|
}
|
}
|
|
|
while (r != NULL)
|
while (r != NULL)
|
{
|
{
|
fragS *f = get_frag_for_reloc (last_frag, seginfo, r);
|
fragS *f = get_frag_for_reloc (last_frag, seginfo, r);
|
if (f != NULL)
|
if (f != NULL)
|
{
|
{
|
last_frag = f;
|
last_frag = f;
|
relocs[n++] = &r->u.b.r;
|
relocs[n++] = &r->u.b.r;
|
install_reloc (sec, &r->u.b.r, f, r->file, r->line);
|
install_reloc (sec, &r->u.b.r, f, r->file, r->line);
|
}
|
}
|
r = r->next;
|
r = r->next;
|
}
|
}
|
|
|
#ifdef DEBUG4
|
#ifdef DEBUG4
|
{
|
{
|
unsigned int k, j, nsyms;
|
unsigned int k, j, nsyms;
|
asymbol **sympp;
|
asymbol **sympp;
|
sympp = bfd_get_outsymbols (stdoutput);
|
sympp = bfd_get_outsymbols (stdoutput);
|
nsyms = bfd_get_symcount (stdoutput);
|
nsyms = bfd_get_symcount (stdoutput);
|
for (k = 0; k < n; k++)
|
for (k = 0; k < n; k++)
|
if (((*relocs[k]->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0)
|
if (((*relocs[k]->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0)
|
{
|
{
|
for (j = 0; j < nsyms; j++)
|
for (j = 0; j < nsyms; j++)
|
if (sympp[j] == *relocs[k]->sym_ptr_ptr)
|
if (sympp[j] == *relocs[k]->sym_ptr_ptr)
|
break;
|
break;
|
if (j == nsyms)
|
if (j == nsyms)
|
abort ();
|
abort ();
|
}
|
}
|
}
|
}
|
#endif
|
#endif
|
|
|
if (n)
|
if (n)
|
{
|
{
|
flagword flags = bfd_get_section_flags (abfd, sec);
|
flagword flags = bfd_get_section_flags (abfd, sec);
|
flags |= SEC_RELOC;
|
flags |= SEC_RELOC;
|
bfd_set_section_flags (abfd, sec, flags);
|
bfd_set_section_flags (abfd, sec, flags);
|
bfd_set_reloc (stdoutput, sec, relocs, n);
|
bfd_set_reloc (stdoutput, sec, relocs, n);
|
}
|
}
|
|
|
#ifdef SET_SECTION_RELOCS
|
#ifdef SET_SECTION_RELOCS
|
SET_SECTION_RELOCS (sec, relocs, n);
|
SET_SECTION_RELOCS (sec, relocs, n);
|
#endif
|
#endif
|
|
|
#ifdef DEBUG3
|
#ifdef DEBUG3
|
{
|
{
|
unsigned int k;
|
unsigned int k;
|
|
|
fprintf (stderr, "relocs for sec %s\n", sec->name);
|
fprintf (stderr, "relocs for sec %s\n", sec->name);
|
for (k = 0; k < n; k++)
|
for (k = 0; k < n; k++)
|
{
|
{
|
arelent *rel = relocs[k];
|
arelent *rel = relocs[k];
|
asymbol *s = *rel->sym_ptr_ptr;
|
asymbol *s = *rel->sym_ptr_ptr;
|
fprintf (stderr, " reloc %2d @%p off %4lx : sym %-10s addend %lx\n",
|
fprintf (stderr, " reloc %2d @%p off %4lx : sym %-10s addend %lx\n",
|
k, rel, (unsigned long)rel->address, s->name,
|
k, rel, (unsigned long)rel->address, s->name,
|
(unsigned long)rel->addend);
|
(unsigned long)rel->addend);
|
}
|
}
|
}
|
}
|
#endif
|
#endif
|
}
|
}
|
|
|
static int
|
static int
|
compress_frag (struct z_stream_s *strm, const char *contents, int in_size,
|
compress_frag (struct z_stream_s *strm, const char *contents, int in_size,
|
fragS **last_newf, struct obstack *ob)
|
fragS **last_newf, struct obstack *ob)
|
{
|
{
|
int out_size;
|
int out_size;
|
int total_out_size = 0;
|
int total_out_size = 0;
|
fragS *f = *last_newf;
|
fragS *f = *last_newf;
|
char *next_out;
|
char *next_out;
|
int avail_out;
|
int avail_out;
|
|
|
/* Call the compression routine repeatedly until it has finished
|
/* Call the compression routine repeatedly until it has finished
|
processing the frag. */
|
processing the frag. */
|
while (in_size > 0)
|
while (in_size > 0)
|
{
|
{
|
/* Reserve all the space available in the current chunk.
|
/* Reserve all the space available in the current chunk.
|
If none is available, start a new frag. */
|
If none is available, start a new frag. */
|
avail_out = obstack_room (ob);
|
avail_out = obstack_room (ob);
|
if (avail_out <= 0)
|
if (avail_out <= 0)
|
{
|
{
|
obstack_finish (ob);
|
obstack_finish (ob);
|
f = frag_alloc (ob);
|
f = frag_alloc (ob);
|
f->fr_type = rs_fill;
|
f->fr_type = rs_fill;
|
(*last_newf)->fr_next = f;
|
(*last_newf)->fr_next = f;
|
*last_newf = f;
|
*last_newf = f;
|
avail_out = obstack_room (ob);
|
avail_out = obstack_room (ob);
|
}
|
}
|
if (avail_out <= 0)
|
if (avail_out <= 0)
|
as_fatal (_("can't extend frag"));
|
as_fatal (_("can't extend frag"));
|
next_out = obstack_next_free (ob);
|
next_out = obstack_next_free (ob);
|
obstack_blank_fast (ob, avail_out);
|
obstack_blank_fast (ob, avail_out);
|
out_size = compress_data (strm, &contents, &in_size,
|
out_size = compress_data (strm, &contents, &in_size,
|
&next_out, &avail_out);
|
&next_out, &avail_out);
|
if (out_size < 0)
|
if (out_size < 0)
|
return -1;
|
return -1;
|
|
|
f->fr_fix += out_size;
|
f->fr_fix += out_size;
|
total_out_size += out_size;
|
total_out_size += out_size;
|
|
|
/* Return unused space. */
|
/* Return unused space. */
|
if (avail_out > 0)
|
if (avail_out > 0)
|
obstack_blank_fast (ob, -avail_out);
|
obstack_blank_fast (ob, -avail_out);
|
}
|
}
|
|
|
return total_out_size;
|
return total_out_size;
|
}
|
}
|
|
|
static void
|
static void
|
compress_debug (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED)
|
compress_debug (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED)
|
{
|
{
|
segment_info_type *seginfo = seg_info (sec);
|
segment_info_type *seginfo = seg_info (sec);
|
fragS *f;
|
fragS *f;
|
fragS *first_newf;
|
fragS *first_newf;
|
fragS *last_newf;
|
fragS *last_newf;
|
struct obstack *ob = &seginfo->frchainP->frch_obstack;
|
struct obstack *ob = &seginfo->frchainP->frch_obstack;
|
bfd_size_type uncompressed_size = (bfd_size_type) sec->size;
|
bfd_size_type uncompressed_size = (bfd_size_type) sec->size;
|
bfd_size_type compressed_size;
|
bfd_size_type compressed_size;
|
const char *section_name;
|
const char *section_name;
|
char *compressed_name;
|
char *compressed_name;
|
char *header;
|
char *header;
|
struct z_stream_s *strm;
|
struct z_stream_s *strm;
|
int x;
|
int x;
|
flagword flags = bfd_get_section_flags (abfd, sec);
|
flagword flags = bfd_get_section_flags (abfd, sec);
|
|
|
if (seginfo == NULL
|
if (seginfo == NULL
|
|| sec->size < 32
|
|| sec->size < 32
|
|| (flags & (SEC_ALLOC | SEC_HAS_CONTENTS)) == SEC_ALLOC)
|
|| (flags & (SEC_ALLOC | SEC_HAS_CONTENTS)) == SEC_ALLOC)
|
return;
|
return;
|
|
|
section_name = bfd_get_section_name (stdoutput, sec);
|
section_name = bfd_get_section_name (stdoutput, sec);
|
if (strncmp (section_name, ".debug_", 7) != 0)
|
if (strncmp (section_name, ".debug_", 7) != 0)
|
return;
|
return;
|
|
|
strm = compress_init ();
|
strm = compress_init ();
|
if (strm == NULL)
|
if (strm == NULL)
|
return;
|
return;
|
|
|
/* Create a new frag to contain the "ZLIB" header. */
|
/* Create a new frag to contain the "ZLIB" header. */
|
first_newf = frag_alloc (ob);
|
first_newf = frag_alloc (ob);
|
if (obstack_room (ob) < 12)
|
if (obstack_room (ob) < 12)
|
first_newf = frag_alloc (ob);
|
first_newf = frag_alloc (ob);
|
if (obstack_room (ob) < 12)
|
if (obstack_room (ob) < 12)
|
as_fatal (_("can't extend frag %u chars"), 12);
|
as_fatal (_("can't extend frag %u chars"), 12);
|
last_newf = first_newf;
|
last_newf = first_newf;
|
obstack_blank_fast (ob, 12);
|
obstack_blank_fast (ob, 12);
|
last_newf->fr_type = rs_fill;
|
last_newf->fr_type = rs_fill;
|
last_newf->fr_fix = 12;
|
last_newf->fr_fix = 12;
|
header = last_newf->fr_literal;
|
header = last_newf->fr_literal;
|
memcpy (header, "ZLIB", 4);
|
memcpy (header, "ZLIB", 4);
|
header[11] = uncompressed_size; uncompressed_size >>= 8;
|
header[11] = uncompressed_size; uncompressed_size >>= 8;
|
header[10] = uncompressed_size; uncompressed_size >>= 8;
|
header[10] = uncompressed_size; uncompressed_size >>= 8;
|
header[9] = uncompressed_size; uncompressed_size >>= 8;
|
header[9] = uncompressed_size; uncompressed_size >>= 8;
|
header[8] = uncompressed_size; uncompressed_size >>= 8;
|
header[8] = uncompressed_size; uncompressed_size >>= 8;
|
header[7] = uncompressed_size; uncompressed_size >>= 8;
|
header[7] = uncompressed_size; uncompressed_size >>= 8;
|
header[6] = uncompressed_size; uncompressed_size >>= 8;
|
header[6] = uncompressed_size; uncompressed_size >>= 8;
|
header[5] = uncompressed_size; uncompressed_size >>= 8;
|
header[5] = uncompressed_size; uncompressed_size >>= 8;
|
header[4] = uncompressed_size;
|
header[4] = uncompressed_size;
|
compressed_size = 12;
|
compressed_size = 12;
|
|
|
/* Stream the frags through the compression engine, adding new frags
|
/* Stream the frags through the compression engine, adding new frags
|
as necessary to accomodate the compressed output. */
|
as necessary to accomodate the compressed output. */
|
for (f = seginfo->frchainP->frch_root;
|
for (f = seginfo->frchainP->frch_root;
|
f;
|
f;
|
f = f->fr_next)
|
f = f->fr_next)
|
{
|
{
|
offsetT fill_size;
|
offsetT fill_size;
|
char *fill_literal;
|
char *fill_literal;
|
offsetT count;
|
offsetT count;
|
int out_size;
|
int out_size;
|
|
|
gas_assert (f->fr_type == rs_fill);
|
gas_assert (f->fr_type == rs_fill);
|
if (f->fr_fix)
|
if (f->fr_fix)
|
{
|
{
|
out_size = compress_frag (strm, f->fr_literal, f->fr_fix,
|
out_size = compress_frag (strm, f->fr_literal, f->fr_fix,
|
&last_newf, ob);
|
&last_newf, ob);
|
if (out_size < 0)
|
if (out_size < 0)
|
return;
|
return;
|
compressed_size += out_size;
|
compressed_size += out_size;
|
}
|
}
|
fill_literal = f->fr_literal + f->fr_fix;
|
fill_literal = f->fr_literal + f->fr_fix;
|
fill_size = f->fr_var;
|
fill_size = f->fr_var;
|
count = f->fr_offset;
|
count = f->fr_offset;
|
gas_assert (count >= 0);
|
gas_assert (count >= 0);
|
if (fill_size && count)
|
if (fill_size && count)
|
{
|
{
|
while (count--)
|
while (count--)
|
{
|
{
|
out_size = compress_frag (strm, fill_literal, (int) fill_size,
|
out_size = compress_frag (strm, fill_literal, (int) fill_size,
|
&last_newf, ob);
|
&last_newf, ob);
|
if (out_size < 0)
|
if (out_size < 0)
|
return;
|
return;
|
compressed_size += out_size;
|
compressed_size += out_size;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Flush the compression state. */
|
/* Flush the compression state. */
|
for (;;)
|
for (;;)
|
{
|
{
|
int avail_out;
|
int avail_out;
|
char *next_out;
|
char *next_out;
|
int out_size;
|
int out_size;
|
|
|
/* Reserve all the space available in the current chunk.
|
/* Reserve all the space available in the current chunk.
|
If none is available, start a new frag. */
|
If none is available, start a new frag. */
|
avail_out = obstack_room (ob);
|
avail_out = obstack_room (ob);
|
if (avail_out <= 0)
|
if (avail_out <= 0)
|
{
|
{
|
fragS *newf;
|
fragS *newf;
|
|
|
obstack_finish (ob);
|
obstack_finish (ob);
|
newf = frag_alloc (ob);
|
newf = frag_alloc (ob);
|
newf->fr_type = rs_fill;
|
newf->fr_type = rs_fill;
|
last_newf->fr_next = newf;
|
last_newf->fr_next = newf;
|
last_newf = newf;
|
last_newf = newf;
|
avail_out = obstack_room (ob);
|
avail_out = obstack_room (ob);
|
}
|
}
|
if (avail_out <= 0)
|
if (avail_out <= 0)
|
as_fatal (_("can't extend frag"));
|
as_fatal (_("can't extend frag"));
|
next_out = obstack_next_free (ob);
|
next_out = obstack_next_free (ob);
|
obstack_blank_fast (ob, avail_out);
|
obstack_blank_fast (ob, avail_out);
|
x = compress_finish (strm, &next_out, &avail_out, &out_size);
|
x = compress_finish (strm, &next_out, &avail_out, &out_size);
|
if (x < 0)
|
if (x < 0)
|
return;
|
return;
|
|
|
last_newf->fr_fix += out_size;
|
last_newf->fr_fix += out_size;
|
compressed_size += out_size;
|
compressed_size += out_size;
|
|
|
/* Return unused space. */
|
/* Return unused space. */
|
if (avail_out > 0)
|
if (avail_out > 0)
|
obstack_blank_fast (ob, -avail_out);
|
obstack_blank_fast (ob, -avail_out);
|
|
|
if (x == 0)
|
if (x == 0)
|
break;
|
break;
|
}
|
}
|
|
|
/* Replace the uncompressed frag list with the compressed frag list. */
|
/* Replace the uncompressed frag list with the compressed frag list. */
|
seginfo->frchainP->frch_root = first_newf;
|
seginfo->frchainP->frch_root = first_newf;
|
seginfo->frchainP->frch_last = last_newf;
|
seginfo->frchainP->frch_last = last_newf;
|
|
|
/* Update the section size and its name. */
|
/* Update the section size and its name. */
|
x = bfd_set_section_size (abfd, sec, compressed_size);
|
x = bfd_set_section_size (abfd, sec, compressed_size);
|
gas_assert (x);
|
gas_assert (x);
|
compressed_name = (char *) xmalloc (strlen (section_name) + 2);
|
compressed_name = (char *) xmalloc (strlen (section_name) + 2);
|
compressed_name[0] = '.';
|
compressed_name[0] = '.';
|
compressed_name[1] = 'z';
|
compressed_name[1] = 'z';
|
strcpy (compressed_name + 2, section_name + 1);
|
strcpy (compressed_name + 2, section_name + 1);
|
bfd_section_name (stdoutput, sec) = compressed_name;
|
bfd_section_name (stdoutput, sec) = compressed_name;
|
}
|
}
|
|
|
static void
|
static void
|
write_contents (bfd *abfd ATTRIBUTE_UNUSED,
|
write_contents (bfd *abfd ATTRIBUTE_UNUSED,
|
asection *sec,
|
asection *sec,
|
void *xxx ATTRIBUTE_UNUSED)
|
void *xxx ATTRIBUTE_UNUSED)
|
{
|
{
|
segment_info_type *seginfo = seg_info (sec);
|
segment_info_type *seginfo = seg_info (sec);
|
addressT offset = 0;
|
addressT offset = 0;
|
fragS *f;
|
fragS *f;
|
|
|
/* Write out the frags. */
|
/* Write out the frags. */
|
if (seginfo == NULL
|
if (seginfo == NULL
|
|| !(bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS))
|
|| !(bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS))
|
return;
|
return;
|
|
|
for (f = seginfo->frchainP->frch_root;
|
for (f = seginfo->frchainP->frch_root;
|
f;
|
f;
|
f = f->fr_next)
|
f = f->fr_next)
|
{
|
{
|
int x;
|
int x;
|
addressT fill_size;
|
addressT fill_size;
|
char *fill_literal;
|
char *fill_literal;
|
offsetT count;
|
offsetT count;
|
|
|
gas_assert (f->fr_type == rs_fill);
|
gas_assert (f->fr_type == rs_fill);
|
if (f->fr_fix)
|
if (f->fr_fix)
|
{
|
{
|
x = bfd_set_section_contents (stdoutput, sec,
|
x = bfd_set_section_contents (stdoutput, sec,
|
f->fr_literal, (file_ptr) offset,
|
f->fr_literal, (file_ptr) offset,
|
(bfd_size_type) f->fr_fix);
|
(bfd_size_type) f->fr_fix);
|
if (!x)
|
if (!x)
|
as_fatal (_("can't write %s: %s"), stdoutput->filename,
|
as_fatal (_("can't write %s: %s"), stdoutput->filename,
|
bfd_errmsg (bfd_get_error ()));
|
bfd_errmsg (bfd_get_error ()));
|
offset += f->fr_fix;
|
offset += f->fr_fix;
|
}
|
}
|
fill_literal = f->fr_literal + f->fr_fix;
|
fill_literal = f->fr_literal + f->fr_fix;
|
fill_size = f->fr_var;
|
fill_size = f->fr_var;
|
count = f->fr_offset;
|
count = f->fr_offset;
|
gas_assert (count >= 0);
|
gas_assert (count >= 0);
|
if (fill_size && count)
|
if (fill_size && count)
|
{
|
{
|
char buf[256];
|
char buf[256];
|
if (fill_size > sizeof (buf))
|
if (fill_size > sizeof (buf))
|
{
|
{
|
/* Do it the old way. Can this ever happen? */
|
/* Do it the old way. Can this ever happen? */
|
while (count--)
|
while (count--)
|
{
|
{
|
x = bfd_set_section_contents (stdoutput, sec,
|
x = bfd_set_section_contents (stdoutput, sec,
|
fill_literal,
|
fill_literal,
|
(file_ptr) offset,
|
(file_ptr) offset,
|
(bfd_size_type) fill_size);
|
(bfd_size_type) fill_size);
|
if (!x)
|
if (!x)
|
as_fatal (_("can't write %s: %s"), stdoutput->filename,
|
as_fatal (_("can't write %s: %s"), stdoutput->filename,
|
bfd_errmsg (bfd_get_error ()));
|
bfd_errmsg (bfd_get_error ()));
|
offset += fill_size;
|
offset += fill_size;
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Build a buffer full of fill objects and output it as
|
/* Build a buffer full of fill objects and output it as
|
often as necessary. This saves on the overhead of
|
often as necessary. This saves on the overhead of
|
potentially lots of bfd_set_section_contents calls. */
|
potentially lots of bfd_set_section_contents calls. */
|
int n_per_buf, i;
|
int n_per_buf, i;
|
if (fill_size == 1)
|
if (fill_size == 1)
|
{
|
{
|
n_per_buf = sizeof (buf);
|
n_per_buf = sizeof (buf);
|
memset (buf, *fill_literal, n_per_buf);
|
memset (buf, *fill_literal, n_per_buf);
|
}
|
}
|
else
|
else
|
{
|
{
|
char *bufp;
|
char *bufp;
|
n_per_buf = sizeof (buf) / fill_size;
|
n_per_buf = sizeof (buf) / fill_size;
|
for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size)
|
for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size)
|
memcpy (bufp, fill_literal, fill_size);
|
memcpy (bufp, fill_literal, fill_size);
|
}
|
}
|
for (; count > 0; count -= n_per_buf)
|
for (; count > 0; count -= n_per_buf)
|
{
|
{
|
n_per_buf = n_per_buf > count ? count : n_per_buf;
|
n_per_buf = n_per_buf > count ? count : n_per_buf;
|
x = bfd_set_section_contents
|
x = bfd_set_section_contents
|
(stdoutput, sec, buf, (file_ptr) offset,
|
(stdoutput, sec, buf, (file_ptr) offset,
|
(bfd_size_type) n_per_buf * fill_size);
|
(bfd_size_type) n_per_buf * fill_size);
|
if (!x)
|
if (!x)
|
as_fatal (_("cannot write to output file '%s': %s"),
|
as_fatal (_("cannot write to output file '%s': %s"),
|
stdoutput->filename,
|
stdoutput->filename,
|
bfd_errmsg (bfd_get_error ()));
|
bfd_errmsg (bfd_get_error ()));
|
offset += n_per_buf * fill_size;
|
offset += n_per_buf * fill_size;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
merge_data_into_text (void)
|
merge_data_into_text (void)
|
{
|
{
|
seg_info (text_section)->frchainP->frch_last->fr_next =
|
seg_info (text_section)->frchainP->frch_last->fr_next =
|
seg_info (data_section)->frchainP->frch_root;
|
seg_info (data_section)->frchainP->frch_root;
|
seg_info (text_section)->frchainP->frch_last =
|
seg_info (text_section)->frchainP->frch_last =
|
seg_info (data_section)->frchainP->frch_last;
|
seg_info (data_section)->frchainP->frch_last;
|
seg_info (data_section)->frchainP = 0;
|
seg_info (data_section)->frchainP = 0;
|
}
|
}
|
|
|
static void
|
static void
|
set_symtab (void)
|
set_symtab (void)
|
{
|
{
|
int nsyms;
|
int nsyms;
|
asymbol **asympp;
|
asymbol **asympp;
|
symbolS *symp;
|
symbolS *symp;
|
bfd_boolean result;
|
bfd_boolean result;
|
|
|
/* Count symbols. We can't rely on a count made by the loop in
|
/* Count symbols. We can't rely on a count made by the loop in
|
write_object_file, because *_frob_file may add a new symbol or
|
write_object_file, because *_frob_file may add a new symbol or
|
two. */
|
two. */
|
nsyms = 0;
|
nsyms = 0;
|
for (symp = symbol_rootP; symp; symp = symbol_next (symp))
|
for (symp = symbol_rootP; symp; symp = symbol_next (symp))
|
nsyms++;
|
nsyms++;
|
|
|
if (nsyms)
|
if (nsyms)
|
{
|
{
|
int i;
|
int i;
|
bfd_size_type amt = (bfd_size_type) nsyms * sizeof (asymbol *);
|
bfd_size_type amt = (bfd_size_type) nsyms * sizeof (asymbol *);
|
|
|
asympp = (asymbol **) bfd_alloc (stdoutput, amt);
|
asympp = (asymbol **) bfd_alloc (stdoutput, amt);
|
symp = symbol_rootP;
|
symp = symbol_rootP;
|
for (i = 0; i < nsyms; i++, symp = symbol_next (symp))
|
for (i = 0; i < nsyms; i++, symp = symbol_next (symp))
|
{
|
{
|
asympp[i] = symbol_get_bfdsym (symp);
|
asympp[i] = symbol_get_bfdsym (symp);
|
if (asympp[i]->flags != BSF_SECTION_SYM
|
if (asympp[i]->flags != BSF_SECTION_SYM
|
|| !(bfd_is_const_section (asympp[i]->section)
|
|| !(bfd_is_const_section (asympp[i]->section)
|
&& asympp[i]->section->symbol == asympp[i]))
|
&& asympp[i]->section->symbol == asympp[i]))
|
asympp[i]->flags |= BSF_KEEP;
|
asympp[i]->flags |= BSF_KEEP;
|
symbol_mark_written (symp);
|
symbol_mark_written (symp);
|
}
|
}
|
}
|
}
|
else
|
else
|
asympp = 0;
|
asympp = 0;
|
result = bfd_set_symtab (stdoutput, asympp, nsyms);
|
result = bfd_set_symtab (stdoutput, asympp, nsyms);
|
gas_assert (result);
|
gas_assert (result);
|
symbol_table_frozen = 1;
|
symbol_table_frozen = 1;
|
}
|
}
|
|
|
/* Finish the subsegments. After every sub-segment, we fake an
|
/* Finish the subsegments. After every sub-segment, we fake an
|
".align ...". This conforms to BSD4.2 brane-damage. We then fake
|
".align ...". This conforms to BSD4.2 brane-damage. We then fake
|
".fill 0" because that is the kind of frag that requires least
|
".fill 0" because that is the kind of frag that requires least
|
thought. ".align" frags like to have a following frag since that
|
thought. ".align" frags like to have a following frag since that
|
makes calculating their intended length trivial. */
|
makes calculating their intended length trivial. */
|
|
|
#ifndef SUB_SEGMENT_ALIGN
|
#ifndef SUB_SEGMENT_ALIGN
|
#ifdef HANDLE_ALIGN
|
#ifdef HANDLE_ALIGN
|
/* The last subsegment gets an alignment corresponding to the alignment
|
/* The last subsegment gets an alignment corresponding to the alignment
|
of the section. This allows proper nop-filling at the end of
|
of the section. This allows proper nop-filling at the end of
|
code-bearing sections. */
|
code-bearing sections. */
|
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \
|
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \
|
(!(FRCHAIN)->frch_next ? get_recorded_alignment (SEG) : 0)
|
(!(FRCHAIN)->frch_next ? get_recorded_alignment (SEG) : 0)
|
#else
|
#else
|
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
|
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
|
#endif
|
#endif
|
#endif
|
#endif
|
|
|
void
|
void
|
subsegs_finish (void)
|
subsegs_finish (void)
|
{
|
{
|
struct frchain *frchainP;
|
struct frchain *frchainP;
|
asection *s;
|
asection *s;
|
|
|
for (s = stdoutput->sections; s; s = s->next)
|
for (s = stdoutput->sections; s; s = s->next)
|
{
|
{
|
segment_info_type *seginfo = seg_info (s);
|
segment_info_type *seginfo = seg_info (s);
|
if (!seginfo)
|
if (!seginfo)
|
continue;
|
continue;
|
|
|
for (frchainP = seginfo->frchainP;
|
for (frchainP = seginfo->frchainP;
|
frchainP != NULL;
|
frchainP != NULL;
|
frchainP = frchainP->frch_next)
|
frchainP = frchainP->frch_next)
|
{
|
{
|
int alignment = 0;
|
int alignment = 0;
|
|
|
subseg_set (s, frchainP->frch_subseg);
|
subseg_set (s, frchainP->frch_subseg);
|
|
|
/* This now gets called even if we had errors. In that case,
|
/* This now gets called even if we had errors. In that case,
|
any alignment is meaningless, and, moreover, will look weird
|
any alignment is meaningless, and, moreover, will look weird
|
if we are generating a listing. */
|
if we are generating a listing. */
|
if (!had_errors ())
|
if (!had_errors ())
|
{
|
{
|
alignment = SUB_SEGMENT_ALIGN (now_seg, frchainP);
|
alignment = SUB_SEGMENT_ALIGN (now_seg, frchainP);
|
if ((bfd_get_section_flags (now_seg->owner, now_seg) & SEC_MERGE)
|
if ((bfd_get_section_flags (now_seg->owner, now_seg) & SEC_MERGE)
|
&& now_seg->entsize)
|
&& now_seg->entsize)
|
{
|
{
|
unsigned int entsize = now_seg->entsize;
|
unsigned int entsize = now_seg->entsize;
|
int entalign = 0;
|
int entalign = 0;
|
|
|
while ((entsize & 1) == 0)
|
while ((entsize & 1) == 0)
|
{
|
{
|
++entalign;
|
++entalign;
|
entsize >>= 1;
|
entsize >>= 1;
|
}
|
}
|
if (entalign > alignment)
|
if (entalign > alignment)
|
alignment = entalign;
|
alignment = entalign;
|
}
|
}
|
}
|
}
|
|
|
if (subseg_text_p (now_seg))
|
if (subseg_text_p (now_seg))
|
frag_align_code (alignment, 0);
|
frag_align_code (alignment, 0);
|
else
|
else
|
frag_align (alignment, 0, 0);
|
frag_align (alignment, 0, 0);
|
|
|
/* frag_align will have left a new frag.
|
/* frag_align will have left a new frag.
|
Use this last frag for an empty ".fill".
|
Use this last frag for an empty ".fill".
|
|
|
For this segment ...
|
For this segment ...
|
Create a last frag. Do not leave a "being filled in frag". */
|
Create a last frag. Do not leave a "being filled in frag". */
|
frag_wane (frag_now);
|
frag_wane (frag_now);
|
frag_now->fr_fix = 0;
|
frag_now->fr_fix = 0;
|
know (frag_now->fr_next == NULL);
|
know (frag_now->fr_next == NULL);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Write the object file. */
|
/* Write the object file. */
|
|
|
void
|
void
|
write_object_file (void)
|
write_object_file (void)
|
{
|
{
|
struct relax_seg_info rsi;
|
struct relax_seg_info rsi;
|
#ifndef WORKING_DOT_WORD
|
#ifndef WORKING_DOT_WORD
|
fragS *fragP; /* Track along all frags. */
|
fragS *fragP; /* Track along all frags. */
|
#endif
|
#endif
|
|
|
|
#ifdef md_pre_output_hook
|
|
md_pre_output_hook;
|
|
#endif
|
|
|
/* Do we really want to write it? */
|
/* Do we really want to write it? */
|
{
|
{
|
int n_warns, n_errs;
|
int n_warns, n_errs;
|
n_warns = had_warnings ();
|
n_warns = had_warnings ();
|
n_errs = had_errors ();
|
n_errs = had_errors ();
|
/* The -Z flag indicates that an object file should be generated,
|
/* The -Z flag indicates that an object file should be generated,
|
regardless of warnings and errors. */
|
regardless of warnings and errors. */
|
if (flag_always_generate_output)
|
if (flag_always_generate_output)
|
{
|
{
|
if (n_warns || n_errs)
|
if (n_warns || n_errs)
|
as_warn (_("%d error%s, %d warning%s, generating bad object file"),
|
as_warn (_("%d error%s, %d warning%s, generating bad object file"),
|
n_errs, n_errs == 1 ? "" : "s",
|
n_errs, n_errs == 1 ? "" : "s",
|
n_warns, n_warns == 1 ? "" : "s");
|
n_warns, n_warns == 1 ? "" : "s");
|
}
|
}
|
else
|
else
|
{
|
{
|
if (n_errs)
|
if (n_errs)
|
as_fatal (_("%d error%s, %d warning%s, no object file generated"),
|
as_fatal (_("%d error%s, %d warning%s, no object file generated"),
|
n_errs, n_errs == 1 ? "" : "s",
|
n_errs, n_errs == 1 ? "" : "s",
|
n_warns, n_warns == 1 ? "" : "s");
|
n_warns, n_warns == 1 ? "" : "s");
|
}
|
}
|
}
|
}
|
|
|
|
#ifdef md_pre_relax_hook
|
|
md_pre_relax_hook;
|
|
#endif
|
|
|
/* From now on, we don't care about sub-segments. Build one frag chain
|
/* From now on, we don't care about sub-segments. Build one frag chain
|
for each segment. Linked thru fr_next. */
|
for each segment. Linked thru fr_next. */
|
|
|
/* Remove the sections created by gas for its own purposes. */
|
/* Remove the sections created by gas for its own purposes. */
|
{
|
{
|
int i;
|
int i;
|
|
|
bfd_section_list_remove (stdoutput, reg_section);
|
bfd_section_list_remove (stdoutput, reg_section);
|
bfd_section_list_remove (stdoutput, expr_section);
|
bfd_section_list_remove (stdoutput, expr_section);
|
stdoutput->section_count -= 2;
|
stdoutput->section_count -= 2;
|
i = 0;
|
i = 0;
|
bfd_map_over_sections (stdoutput, renumber_sections, &i);
|
bfd_map_over_sections (stdoutput, renumber_sections, &i);
|
}
|
}
|
|
|
bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0);
|
bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0);
|
|
|
/* We have two segments. If user gave -R flag, then we must put the
|
/* We have two segments. If user gave -R flag, then we must put the
|
data frags into the text segment. Do this before relaxing so
|
data frags into the text segment. Do this before relaxing so
|
we know to take advantage of -R and make shorter addresses. */
|
we know to take advantage of -R and make shorter addresses. */
|
if (flag_readonly_data_in_text)
|
if (flag_readonly_data_in_text)
|
{
|
{
|
merge_data_into_text ();
|
merge_data_into_text ();
|
}
|
}
|
|
|
rsi.pass = 0;
|
rsi.pass = 0;
|
while (1)
|
while (1)
|
{
|
{
|
#ifndef WORKING_DOT_WORD
|
#ifndef WORKING_DOT_WORD
|
/* We need to reset the markers in the broken word list and
|
/* We need to reset the markers in the broken word list and
|
associated frags between calls to relax_segment (via
|
associated frags between calls to relax_segment (via
|
relax_seg). Since the broken word list is global, we do it
|
relax_seg). Since the broken word list is global, we do it
|
once per round, rather than locally in relax_segment for each
|
once per round, rather than locally in relax_segment for each
|
segment. */
|
segment. */
|
struct broken_word *brokp;
|
struct broken_word *brokp;
|
|
|
for (brokp = broken_words;
|
for (brokp = broken_words;
|
brokp != (struct broken_word *) NULL;
|
brokp != (struct broken_word *) NULL;
|
brokp = brokp->next_broken_word)
|
brokp = brokp->next_broken_word)
|
{
|
{
|
brokp->added = 0;
|
brokp->added = 0;
|
|
|
if (brokp->dispfrag != (fragS *) NULL
|
if (brokp->dispfrag != (fragS *) NULL
|
&& brokp->dispfrag->fr_type == rs_broken_word)
|
&& brokp->dispfrag->fr_type == rs_broken_word)
|
brokp->dispfrag->fr_subtype = 0;
|
brokp->dispfrag->fr_subtype = 0;
|
}
|
}
|
#endif
|
#endif
|
|
|
rsi.changed = 0;
|
rsi.changed = 0;
|
bfd_map_over_sections (stdoutput, relax_seg, &rsi);
|
bfd_map_over_sections (stdoutput, relax_seg, &rsi);
|
rsi.pass++;
|
rsi.pass++;
|
if (!rsi.changed)
|
if (!rsi.changed)
|
break;
|
break;
|
}
|
}
|
|
|
/* Note - Most ports will use the default value of
|
/* Note - Most ports will use the default value of
|
TC_FINALIZE_SYMS_BEFORE_SIZE_SEG, which 1. This will force
|
TC_FINALIZE_SYMS_BEFORE_SIZE_SEG, which 1. This will force
|
local symbols to be resolved, removing their frag information.
|
local symbols to be resolved, removing their frag information.
|
Some ports however, will not have finished relaxing all of
|
Some ports however, will not have finished relaxing all of
|
their frags and will still need the local symbol frag
|
their frags and will still need the local symbol frag
|
information. These ports can set
|
information. These ports can set
|
TC_FINALIZE_SYMS_BEFORE_SIZE_SEG to 0. */
|
TC_FINALIZE_SYMS_BEFORE_SIZE_SEG to 0. */
|
finalize_syms = TC_FINALIZE_SYMS_BEFORE_SIZE_SEG;
|
finalize_syms = TC_FINALIZE_SYMS_BEFORE_SIZE_SEG;
|
|
|
bfd_map_over_sections (stdoutput, size_seg, (char *) 0);
|
bfd_map_over_sections (stdoutput, size_seg, (char *) 0);
|
|
|
/* Relaxation has completed. Freeze all syms. */
|
/* Relaxation has completed. Freeze all syms. */
|
finalize_syms = 1;
|
finalize_syms = 1;
|
|
|
#ifdef md_post_relax_hook
|
#ifdef md_post_relax_hook
|
md_post_relax_hook;
|
md_post_relax_hook;
|
#endif
|
#endif
|
|
|
#ifndef WORKING_DOT_WORD
|
#ifndef WORKING_DOT_WORD
|
{
|
{
|
struct broken_word *lie;
|
struct broken_word *lie;
|
struct broken_word **prevP;
|
struct broken_word **prevP;
|
|
|
prevP = &broken_words;
|
prevP = &broken_words;
|
for (lie = broken_words; lie; lie = lie->next_broken_word)
|
for (lie = broken_words; lie; lie = lie->next_broken_word)
|
if (!lie->added)
|
if (!lie->added)
|
{
|
{
|
expressionS exp;
|
expressionS exp;
|
|
|
subseg_change (lie->seg, lie->subseg);
|
subseg_change (lie->seg, lie->subseg);
|
exp.X_op = O_subtract;
|
exp.X_op = O_subtract;
|
exp.X_add_symbol = lie->add;
|
exp.X_add_symbol = lie->add;
|
exp.X_op_symbol = lie->sub;
|
exp.X_op_symbol = lie->sub;
|
exp.X_add_number = lie->addnum;
|
exp.X_add_number = lie->addnum;
|
#ifdef TC_CONS_FIX_NEW
|
#ifdef TC_CONS_FIX_NEW
|
TC_CONS_FIX_NEW (lie->frag,
|
TC_CONS_FIX_NEW (lie->frag,
|
lie->word_goes_here - lie->frag->fr_literal,
|
lie->word_goes_here - lie->frag->fr_literal,
|
2, &exp);
|
2, &exp);
|
#else
|
#else
|
fix_new_exp (lie->frag,
|
fix_new_exp (lie->frag,
|
lie->word_goes_here - lie->frag->fr_literal,
|
lie->word_goes_here - lie->frag->fr_literal,
|
2, &exp, 0, BFD_RELOC_16);
|
2, &exp, 0, BFD_RELOC_16);
|
#endif
|
#endif
|
*prevP = lie->next_broken_word;
|
*prevP = lie->next_broken_word;
|
}
|
}
|
else
|
else
|
prevP = &(lie->next_broken_word);
|
prevP = &(lie->next_broken_word);
|
|
|
for (lie = broken_words; lie;)
|
for (lie = broken_words; lie;)
|
{
|
{
|
struct broken_word *untruth;
|
struct broken_word *untruth;
|
char *table_ptr;
|
char *table_ptr;
|
addressT table_addr;
|
addressT table_addr;
|
addressT from_addr, to_addr;
|
addressT from_addr, to_addr;
|
int n, m;
|
int n, m;
|
|
|
subseg_change (lie->seg, lie->subseg);
|
subseg_change (lie->seg, lie->subseg);
|
fragP = lie->dispfrag;
|
fragP = lie->dispfrag;
|
|
|
/* Find out how many broken_words go here. */
|
/* Find out how many broken_words go here. */
|
n = 0;
|
n = 0;
|
for (untruth = lie;
|
for (untruth = lie;
|
untruth && untruth->dispfrag == fragP;
|
untruth && untruth->dispfrag == fragP;
|
untruth = untruth->next_broken_word)
|
untruth = untruth->next_broken_word)
|
if (untruth->added == 1)
|
if (untruth->added == 1)
|
n++;
|
n++;
|
|
|
table_ptr = lie->dispfrag->fr_opcode;
|
table_ptr = lie->dispfrag->fr_opcode;
|
table_addr = (lie->dispfrag->fr_address
|
table_addr = (lie->dispfrag->fr_address
|
+ (table_ptr - lie->dispfrag->fr_literal));
|
+ (table_ptr - lie->dispfrag->fr_literal));
|
/* Create the jump around the long jumps. This is a short
|
/* Create the jump around the long jumps. This is a short
|
jump from table_ptr+0 to table_ptr+n*long_jump_size. */
|
jump from table_ptr+0 to table_ptr+n*long_jump_size. */
|
from_addr = table_addr;
|
from_addr = table_addr;
|
to_addr = table_addr + md_short_jump_size + n * md_long_jump_size;
|
to_addr = table_addr + md_short_jump_size + n * md_long_jump_size;
|
md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag,
|
md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag,
|
lie->add);
|
lie->add);
|
table_ptr += md_short_jump_size;
|
table_ptr += md_short_jump_size;
|
table_addr += md_short_jump_size;
|
table_addr += md_short_jump_size;
|
|
|
for (m = 0;
|
for (m = 0;
|
lie && lie->dispfrag == fragP;
|
lie && lie->dispfrag == fragP;
|
m++, lie = lie->next_broken_word)
|
m++, lie = lie->next_broken_word)
|
{
|
{
|
if (lie->added == 2)
|
if (lie->added == 2)
|
continue;
|
continue;
|
/* Patch the jump table. */
|
/* Patch the jump table. */
|
for (untruth = (struct broken_word *) (fragP->fr_symbol);
|
for (untruth = (struct broken_word *) (fragP->fr_symbol);
|
untruth && untruth->dispfrag == fragP;
|
untruth && untruth->dispfrag == fragP;
|
untruth = untruth->next_broken_word)
|
untruth = untruth->next_broken_word)
|
{
|
{
|
if (untruth->use_jump == lie)
|
if (untruth->use_jump == lie)
|
{
|
{
|
/* This is the offset from ??? to table_ptr+0.
|
/* This is the offset from ??? to table_ptr+0.
|
The target is the same for all users of this
|
The target is the same for all users of this
|
md_long_jump, but the "sub" bases (and hence the
|
md_long_jump, but the "sub" bases (and hence the
|
offsets) may be different. */
|
offsets) may be different. */
|
addressT to_word = table_addr - S_GET_VALUE (untruth->sub);
|
addressT to_word = table_addr - S_GET_VALUE (untruth->sub);
|
#ifdef TC_CHECK_ADJUSTED_BROKEN_DOT_WORD
|
#ifdef TC_CHECK_ADJUSTED_BROKEN_DOT_WORD
|
TC_CHECK_ADJUSTED_BROKEN_DOT_WORD (to_word, untruth);
|
TC_CHECK_ADJUSTED_BROKEN_DOT_WORD (to_word, untruth);
|
#endif
|
#endif
|
md_number_to_chars (untruth->word_goes_here, to_word, 2);
|
md_number_to_chars (untruth->word_goes_here, to_word, 2);
|
}
|
}
|
}
|
}
|
|
|
/* Install the long jump. */
|
/* Install the long jump. */
|
/* This is a long jump from table_ptr+0 to the final target. */
|
/* This is a long jump from table_ptr+0 to the final target. */
|
from_addr = table_addr;
|
from_addr = table_addr;
|
to_addr = S_GET_VALUE (lie->add) + lie->addnum;
|
to_addr = S_GET_VALUE (lie->add) + lie->addnum;
|
md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag,
|
md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag,
|
lie->add);
|
lie->add);
|
table_ptr += md_long_jump_size;
|
table_ptr += md_long_jump_size;
|
table_addr += md_long_jump_size;
|
table_addr += md_long_jump_size;
|
}
|
}
|
}
|
}
|
}
|
}
|
#endif /* not WORKING_DOT_WORD */
|
#endif /* not WORKING_DOT_WORD */
|
|
|
/* Resolve symbol values. This needs to be done before processing
|
/* Resolve symbol values. This needs to be done before processing
|
the relocations. */
|
the relocations. */
|
if (symbol_rootP)
|
if (symbol_rootP)
|
{
|
{
|
symbolS *symp;
|
symbolS *symp;
|
|
|
for (symp = symbol_rootP; symp; symp = symbol_next (symp))
|
for (symp = symbol_rootP; symp; symp = symbol_next (symp))
|
resolve_symbol_value (symp);
|
resolve_symbol_value (symp);
|
}
|
}
|
resolve_local_symbol_values ();
|
resolve_local_symbol_values ();
|
resolve_reloc_expr_symbols ();
|
resolve_reloc_expr_symbols ();
|
|
|
PROGRESS (1);
|
PROGRESS (1);
|
|
|
#ifdef tc_frob_file_before_adjust
|
#ifdef tc_frob_file_before_adjust
|
tc_frob_file_before_adjust ();
|
tc_frob_file_before_adjust ();
|
#endif
|
#endif
|
#ifdef obj_frob_file_before_adjust
|
#ifdef obj_frob_file_before_adjust
|
obj_frob_file_before_adjust ();
|
obj_frob_file_before_adjust ();
|
#endif
|
#endif
|
|
|
bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *) 0);
|
bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *) 0);
|
|
|
#ifdef tc_frob_file_before_fix
|
#ifdef tc_frob_file_before_fix
|
tc_frob_file_before_fix ();
|
tc_frob_file_before_fix ();
|
#endif
|
#endif
|
#ifdef obj_frob_file_before_fix
|
#ifdef obj_frob_file_before_fix
|
obj_frob_file_before_fix ();
|
obj_frob_file_before_fix ();
|
#endif
|
#endif
|
|
|
bfd_map_over_sections (stdoutput, fix_segment, (char *) 0);
|
bfd_map_over_sections (stdoutput, fix_segment, (char *) 0);
|
|
|
/* Set up symbol table, and write it out. */
|
/* Set up symbol table, and write it out. */
|
if (symbol_rootP)
|
if (symbol_rootP)
|
{
|
{
|
symbolS *symp;
|
symbolS *symp;
|
bfd_boolean skip_next_symbol = FALSE;
|
bfd_boolean skip_next_symbol = FALSE;
|
|
|
for (symp = symbol_rootP; symp; symp = symbol_next (symp))
|
for (symp = symbol_rootP; symp; symp = symbol_next (symp))
|
{
|
{
|
int punt = 0;
|
int punt = 0;
|
const char *name;
|
const char *name;
|
|
|
if (skip_next_symbol)
|
if (skip_next_symbol)
|
{
|
{
|
/* Don't do anything besides moving the value of the
|
/* Don't do anything besides moving the value of the
|
symbol from the GAS value-field to the BFD value-field. */
|
symbol from the GAS value-field to the BFD value-field. */
|
symbol_get_bfdsym (symp)->value = S_GET_VALUE (symp);
|
symbol_get_bfdsym (symp)->value = S_GET_VALUE (symp);
|
skip_next_symbol = FALSE;
|
skip_next_symbol = FALSE;
|
continue;
|
continue;
|
}
|
}
|
|
|
if (symbol_mri_common_p (symp))
|
if (symbol_mri_common_p (symp))
|
{
|
{
|
if (S_IS_EXTERNAL (symp))
|
if (S_IS_EXTERNAL (symp))
|
as_bad (_("%s: global symbols not supported in common sections"),
|
as_bad (_("%s: global symbols not supported in common sections"),
|
S_GET_NAME (symp));
|
S_GET_NAME (symp));
|
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
|
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
|
continue;
|
continue;
|
}
|
}
|
|
|
name = S_GET_NAME (symp);
|
name = S_GET_NAME (symp);
|
if (name)
|
if (name)
|
{
|
{
|
const char *name2 =
|
const char *name2 =
|
decode_local_label_name ((char *) S_GET_NAME (symp));
|
decode_local_label_name ((char *) S_GET_NAME (symp));
|
/* They only differ if `name' is a fb or dollar local
|
/* They only differ if `name' is a fb or dollar local
|
label name. */
|
label name. */
|
if (name2 != name && ! S_IS_DEFINED (symp))
|
if (name2 != name && ! S_IS_DEFINED (symp))
|
as_bad (_("local label `%s' is not defined"), name2);
|
as_bad (_("local label `%s' is not defined"), name2);
|
}
|
}
|
|
|
/* Do it again, because adjust_reloc_syms might introduce
|
/* Do it again, because adjust_reloc_syms might introduce
|
more symbols. They'll probably only be section symbols,
|
more symbols. They'll probably only be section symbols,
|
but they'll still need to have the values computed. */
|
but they'll still need to have the values computed. */
|
resolve_symbol_value (symp);
|
resolve_symbol_value (symp);
|
|
|
/* Skip symbols which were equated to undefined or common
|
/* Skip symbols which were equated to undefined or common
|
symbols. */
|
symbols. */
|
if (symbol_equated_reloc_p (symp)
|
if (symbol_equated_reloc_p (symp)
|
|| S_IS_WEAKREFR (symp))
|
|| S_IS_WEAKREFR (symp))
|
{
|
{
|
const char *sname = S_GET_NAME (symp);
|
const char *sname = S_GET_NAME (symp);
|
|
|
if (S_IS_COMMON (symp)
|
if (S_IS_COMMON (symp)
|
&& !TC_FAKE_LABEL (sname)
|
&& !TC_FAKE_LABEL (sname)
|
&& !S_IS_WEAKREFR (symp)
|
&& !S_IS_WEAKREFR (symp)
|
&& (!S_IS_EXTERNAL (symp) || S_IS_LOCAL (symp)))
|
&& (!S_IS_EXTERNAL (symp) || S_IS_LOCAL (symp)))
|
{
|
{
|
expressionS *e = symbol_get_value_expression (symp);
|
expressionS *e = symbol_get_value_expression (symp);
|
|
|
as_bad (_("Local symbol `%s' can't be equated to common symbol `%s'"),
|
as_bad (_("Local symbol `%s' can't be equated to common symbol `%s'"),
|
sname, S_GET_NAME (e->X_add_symbol));
|
sname, S_GET_NAME (e->X_add_symbol));
|
}
|
}
|
if (S_GET_SEGMENT (symp) == reg_section)
|
if (S_GET_SEGMENT (symp) == reg_section)
|
{
|
{
|
/* Report error only if we know the symbol name. */
|
/* Report error only if we know the symbol name. */
|
if (S_GET_NAME (symp) != reg_section->name)
|
if (S_GET_NAME (symp) != reg_section->name)
|
as_bad (_("can't make global register symbol `%s'"),
|
as_bad (_("can't make global register symbol `%s'"),
|
sname);
|
sname);
|
}
|
}
|
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
|
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
|
continue;
|
continue;
|
}
|
}
|
|
|
#ifdef obj_frob_symbol
|
#ifdef obj_frob_symbol
|
obj_frob_symbol (symp, punt);
|
obj_frob_symbol (symp, punt);
|
#endif
|
#endif
|
#ifdef tc_frob_symbol
|
#ifdef tc_frob_symbol
|
if (! punt || symbol_used_in_reloc_p (symp))
|
if (! punt || symbol_used_in_reloc_p (symp))
|
tc_frob_symbol (symp, punt);
|
tc_frob_symbol (symp, punt);
|
#endif
|
#endif
|
|
|
/* If we don't want to keep this symbol, splice it out of
|
/* If we don't want to keep this symbol, splice it out of
|
the chain now. If EMIT_SECTION_SYMBOLS is 0, we never
|
the chain now. If EMIT_SECTION_SYMBOLS is 0, we never
|
want section symbols. Otherwise, we skip local symbols
|
want section symbols. Otherwise, we skip local symbols
|
and symbols that the frob_symbol macros told us to punt,
|
and symbols that the frob_symbol macros told us to punt,
|
but we keep such symbols if they are used in relocs. */
|
but we keep such symbols if they are used in relocs. */
|
if (symp == abs_section_sym
|
if (symp == abs_section_sym
|
|| (! EMIT_SECTION_SYMBOLS
|
|| (! EMIT_SECTION_SYMBOLS
|
&& symbol_section_p (symp))
|
&& symbol_section_p (symp))
|
/* Note that S_IS_EXTERNAL and S_IS_LOCAL are not always
|
/* Note that S_IS_EXTERNAL and S_IS_LOCAL are not always
|
opposites. Sometimes the former checks flags and the
|
opposites. Sometimes the former checks flags and the
|
latter examines the name... */
|
latter examines the name... */
|
|| (!S_IS_EXTERNAL (symp)
|
|| (!S_IS_EXTERNAL (symp)
|
&& (punt || S_IS_LOCAL (symp) ||
|
&& (punt || S_IS_LOCAL (symp) ||
|
(S_IS_WEAKREFD (symp) && ! symbol_used_p (symp)))
|
(S_IS_WEAKREFD (symp) && ! symbol_used_p (symp)))
|
&& ! symbol_used_in_reloc_p (symp)))
|
&& ! symbol_used_in_reloc_p (symp)))
|
{
|
{
|
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
|
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
|
|
|
/* After symbol_remove, symbol_next(symp) still returns
|
/* After symbol_remove, symbol_next(symp) still returns
|
the one that came after it in the chain. So we don't
|
the one that came after it in the chain. So we don't
|
need to do any extra cleanup work here. */
|
need to do any extra cleanup work here. */
|
continue;
|
continue;
|
}
|
}
|
|
|
/* Make sure we really got a value for the symbol. */
|
/* Make sure we really got a value for the symbol. */
|
if (! symbol_resolved_p (symp))
|
if (! symbol_resolved_p (symp))
|
{
|
{
|
as_bad (_("can't resolve value for symbol `%s'"),
|
as_bad (_("can't resolve value for symbol `%s'"),
|
S_GET_NAME (symp));
|
S_GET_NAME (symp));
|
symbol_mark_resolved (symp);
|
symbol_mark_resolved (symp);
|
}
|
}
|
|
|
/* Set the value into the BFD symbol. Up til now the value
|
/* Set the value into the BFD symbol. Up til now the value
|
has only been kept in the gas symbolS struct. */
|
has only been kept in the gas symbolS struct. */
|
symbol_get_bfdsym (symp)->value = S_GET_VALUE (symp);
|
symbol_get_bfdsym (symp)->value = S_GET_VALUE (symp);
|
|
|
/* A warning construct is a warning symbol followed by the
|
/* A warning construct is a warning symbol followed by the
|
symbol warned about. Don't let anything object-format or
|
symbol warned about. Don't let anything object-format or
|
target-specific muck with it; it's ready for output. */
|
target-specific muck with it; it's ready for output. */
|
if (symbol_get_bfdsym (symp)->flags & BSF_WARNING)
|
if (symbol_get_bfdsym (symp)->flags & BSF_WARNING)
|
skip_next_symbol = TRUE;
|
skip_next_symbol = TRUE;
|
}
|
}
|
}
|
}
|
|
|
PROGRESS (1);
|
PROGRESS (1);
|
|
|
/* Now do any format-specific adjustments to the symbol table, such
|
/* Now do any format-specific adjustments to the symbol table, such
|
as adding file symbols. */
|
as adding file symbols. */
|
#ifdef tc_adjust_symtab
|
#ifdef tc_adjust_symtab
|
tc_adjust_symtab ();
|
tc_adjust_symtab ();
|
#endif
|
#endif
|
#ifdef obj_adjust_symtab
|
#ifdef obj_adjust_symtab
|
obj_adjust_symtab ();
|
obj_adjust_symtab ();
|
#endif
|
#endif
|
|
|
/* Stop if there is an error. */
|
/* Stop if there is an error. */
|
if (had_errors ())
|
if (had_errors ())
|
return;
|
return;
|
|
|
/* Now that all the sizes are known, and contents correct, we can
|
/* Now that all the sizes are known, and contents correct, we can
|
start writing to the file. */
|
start writing to the file. */
|
set_symtab ();
|
set_symtab ();
|
|
|
/* If *_frob_file changes the symbol value at this point, it is
|
/* If *_frob_file changes the symbol value at this point, it is
|
responsible for moving the changed value into symp->bsym->value
|
responsible for moving the changed value into symp->bsym->value
|
as well. Hopefully all symbol value changing can be done in
|
as well. Hopefully all symbol value changing can be done in
|
*_frob_symbol. */
|
*_frob_symbol. */
|
#ifdef tc_frob_file
|
#ifdef tc_frob_file
|
tc_frob_file ();
|
tc_frob_file ();
|
#endif
|
#endif
|
#ifdef obj_frob_file
|
#ifdef obj_frob_file
|
obj_frob_file ();
|
obj_frob_file ();
|
#endif
|
#endif
|
#ifdef obj_coff_generate_pdata
|
#ifdef obj_coff_generate_pdata
|
obj_coff_generate_pdata ();
|
obj_coff_generate_pdata ();
|
#endif
|
#endif
|
bfd_map_over_sections (stdoutput, write_relocs, (char *) 0);
|
bfd_map_over_sections (stdoutput, write_relocs, (char *) 0);
|
|
|
#ifdef tc_frob_file_after_relocs
|
#ifdef tc_frob_file_after_relocs
|
tc_frob_file_after_relocs ();
|
tc_frob_file_after_relocs ();
|
#endif
|
#endif
|
#ifdef obj_frob_file_after_relocs
|
#ifdef obj_frob_file_after_relocs
|
obj_frob_file_after_relocs ();
|
obj_frob_file_after_relocs ();
|
#endif
|
#endif
|
|
|
/* Once all relocations have been written, we can compress the
|
/* Once all relocations have been written, we can compress the
|
contents of the debug sections. This needs to be done before
|
contents of the debug sections. This needs to be done before
|
we start writing any sections, because it will affect the file
|
we start writing any sections, because it will affect the file
|
layout, which is fixed once we start writing contents. */
|
layout, which is fixed once we start writing contents. */
|
if (flag_compress_debug)
|
if (flag_compress_debug)
|
bfd_map_over_sections (stdoutput, compress_debug, (char *) 0);
|
bfd_map_over_sections (stdoutput, compress_debug, (char *) 0);
|
|
|
bfd_map_over_sections (stdoutput, write_contents, (char *) 0);
|
bfd_map_over_sections (stdoutput, write_contents, (char *) 0);
|
}
|
}
|
|
|
#ifdef TC_GENERIC_RELAX_TABLE
|
#ifdef TC_GENERIC_RELAX_TABLE
|
/* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */
|
/* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */
|
|
|
long
|
long
|
relax_frag (segT segment, fragS *fragP, long stretch)
|
relax_frag (segT segment, fragS *fragP, long stretch)
|
{
|
{
|
const relax_typeS *this_type;
|
const relax_typeS *this_type;
|
const relax_typeS *start_type;
|
const relax_typeS *start_type;
|
relax_substateT next_state;
|
relax_substateT next_state;
|
relax_substateT this_state;
|
relax_substateT this_state;
|
offsetT growth;
|
offsetT growth;
|
offsetT aim;
|
offsetT aim;
|
addressT target;
|
addressT target;
|
addressT address;
|
addressT address;
|
symbolS *symbolP;
|
symbolS *symbolP;
|
const relax_typeS *table;
|
const relax_typeS *table;
|
|
|
target = fragP->fr_offset;
|
target = fragP->fr_offset;
|
address = fragP->fr_address;
|
address = fragP->fr_address;
|
table = TC_GENERIC_RELAX_TABLE;
|
table = TC_GENERIC_RELAX_TABLE;
|
this_state = fragP->fr_subtype;
|
this_state = fragP->fr_subtype;
|
start_type = this_type = table + this_state;
|
start_type = this_type = table + this_state;
|
symbolP = fragP->fr_symbol;
|
symbolP = fragP->fr_symbol;
|
|
|
if (symbolP)
|
if (symbolP)
|
{
|
{
|
fragS *sym_frag;
|
fragS *sym_frag;
|
|
|
sym_frag = symbol_get_frag (symbolP);
|
sym_frag = symbol_get_frag (symbolP);
|
|
|
#ifndef DIFF_EXPR_OK
|
#ifndef DIFF_EXPR_OK
|
know (sym_frag != NULL);
|
know (sym_frag != NULL);
|
#endif
|
#endif
|
know (S_GET_SEGMENT (symbolP) != absolute_section
|
know (S_GET_SEGMENT (symbolP) != absolute_section
|
|| sym_frag == &zero_address_frag);
|
|| sym_frag == &zero_address_frag);
|
target += S_GET_VALUE (symbolP);
|
target += S_GET_VALUE (symbolP);
|
|
|
/* If SYM_FRAG has yet to be reached on this pass, assume it
|
/* If SYM_FRAG has yet to be reached on this pass, assume it
|
will move by STRETCH just as we did, unless there is an
|
will move by STRETCH just as we did, unless there is an
|
alignment frag between here and SYM_FRAG. An alignment may
|
alignment frag between here and SYM_FRAG. An alignment may
|
well absorb any STRETCH, and we don't want to choose a larger
|
well absorb any STRETCH, and we don't want to choose a larger
|
branch insn by overestimating the needed reach of this
|
branch insn by overestimating the needed reach of this
|
branch. It isn't critical to calculate TARGET exactly; We
|
branch. It isn't critical to calculate TARGET exactly; We
|
know we'll be doing another pass if STRETCH is non-zero. */
|
know we'll be doing another pass if STRETCH is non-zero. */
|
|
|
if (stretch != 0
|
if (stretch != 0
|
&& sym_frag->relax_marker != fragP->relax_marker
|
&& sym_frag->relax_marker != fragP->relax_marker
|
&& S_GET_SEGMENT (symbolP) == segment)
|
&& S_GET_SEGMENT (symbolP) == segment)
|
{
|
{
|
if (stretch < 0
|
if (stretch < 0
|
|| sym_frag->region == fragP->region)
|
|| sym_frag->region == fragP->region)
|
target += stretch;
|
target += stretch;
|
/* If we get here we know we have a forward branch. This
|
/* If we get here we know we have a forward branch. This
|
relax pass may have stretched previous instructions so
|
relax pass may have stretched previous instructions so
|
far that omitting STRETCH would make the branch
|
far that omitting STRETCH would make the branch
|
negative. Don't allow this in case the negative reach is
|
negative. Don't allow this in case the negative reach is
|
large enough to require a larger branch instruction. */
|
large enough to require a larger branch instruction. */
|
else if (target < address)
|
else if (target < address)
|
target = fragP->fr_next->fr_address + stretch;
|
target = fragP->fr_next->fr_address + stretch;
|
}
|
}
|
}
|
}
|
|
|
aim = target - address - fragP->fr_fix;
|
aim = target - address - fragP->fr_fix;
|
#ifdef TC_PCREL_ADJUST
|
#ifdef TC_PCREL_ADJUST
|
/* Currently only the ns32k family needs this. */
|
/* Currently only the ns32k family needs this. */
|
aim += TC_PCREL_ADJUST (fragP);
|
aim += TC_PCREL_ADJUST (fragP);
|
#endif
|
#endif
|
|
|
#ifdef md_prepare_relax_scan
|
#ifdef md_prepare_relax_scan
|
/* Formerly called M68K_AIM_KLUDGE. */
|
/* Formerly called M68K_AIM_KLUDGE. */
|
md_prepare_relax_scan (fragP, address, aim, this_state, this_type);
|
md_prepare_relax_scan (fragP, address, aim, this_state, this_type);
|
#endif
|
#endif
|
|
|
if (aim < 0)
|
if (aim < 0)
|
{
|
{
|
/* Look backwards. */
|
/* Look backwards. */
|
for (next_state = this_type->rlx_more; next_state;)
|
for (next_state = this_type->rlx_more; next_state;)
|
if (aim >= this_type->rlx_backward)
|
if (aim >= this_type->rlx_backward)
|
next_state = 0;
|
next_state = 0;
|
else
|
else
|
{
|
{
|
/* Grow to next state. */
|
/* Grow to next state. */
|
this_state = next_state;
|
this_state = next_state;
|
this_type = table + this_state;
|
this_type = table + this_state;
|
next_state = this_type->rlx_more;
|
next_state = this_type->rlx_more;
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Look forwards. */
|
/* Look forwards. */
|
for (next_state = this_type->rlx_more; next_state;)
|
for (next_state = this_type->rlx_more; next_state;)
|
if (aim <= this_type->rlx_forward)
|
if (aim <= this_type->rlx_forward)
|
next_state = 0;
|
next_state = 0;
|
else
|
else
|
{
|
{
|
/* Grow to next state. */
|
/* Grow to next state. */
|
this_state = next_state;
|
this_state = next_state;
|
this_type = table + this_state;
|
this_type = table + this_state;
|
next_state = this_type->rlx_more;
|
next_state = this_type->rlx_more;
|
}
|
}
|
}
|
}
|
|
|
growth = this_type->rlx_length - start_type->rlx_length;
|
growth = this_type->rlx_length - start_type->rlx_length;
|
if (growth != 0)
|
if (growth != 0)
|
fragP->fr_subtype = this_state;
|
fragP->fr_subtype = this_state;
|
return growth;
|
return growth;
|
}
|
}
|
|
|
#endif /* defined (TC_GENERIC_RELAX_TABLE) */
|
#endif /* defined (TC_GENERIC_RELAX_TABLE) */
|
|
|
/* Relax_align. Advance location counter to next address that has 'alignment'
|
/* Relax_align. Advance location counter to next address that has 'alignment'
|
lowest order bits all 0s, return size of adjustment made. */
|
lowest order bits all 0s, return size of adjustment made. */
|
static relax_addressT
|
static relax_addressT
|
relax_align (register relax_addressT address, /* Address now. */
|
relax_align (register relax_addressT address, /* Address now. */
|
register int alignment /* Alignment (binary). */)
|
register int alignment /* Alignment (binary). */)
|
{
|
{
|
relax_addressT mask;
|
relax_addressT mask;
|
relax_addressT new_address;
|
relax_addressT new_address;
|
|
|
mask = ~((~0) << alignment);
|
mask = ~((~0) << alignment);
|
new_address = (address + mask) & (~mask);
|
new_address = (address + mask) & (~mask);
|
#ifdef LINKER_RELAXING_SHRINKS_ONLY
|
#ifdef LINKER_RELAXING_SHRINKS_ONLY
|
if (linkrelax)
|
if (linkrelax)
|
/* We must provide lots of padding, so the linker can discard it
|
/* We must provide lots of padding, so the linker can discard it
|
when needed. The linker will not add extra space, ever. */
|
when needed. The linker will not add extra space, ever. */
|
new_address += (1 << alignment);
|
new_address += (1 << alignment);
|
#endif
|
#endif
|
return (new_address - address);
|
return (new_address - address);
|
}
|
}
|
|
|
/* Now we have a segment, not a crowd of sub-segments, we can make
|
/* Now we have a segment, not a crowd of sub-segments, we can make
|
fr_address values.
|
fr_address values.
|
|
|
Relax the frags.
|
Relax the frags.
|
|
|
After this, all frags in this segment have addresses that are correct
|
After this, all frags in this segment have addresses that are correct
|
within the segment. Since segments live in different file addresses,
|
within the segment. Since segments live in different file addresses,
|
these frag addresses may not be the same as final object-file
|
these frag addresses may not be the same as final object-file
|
addresses. */
|
addresses. */
|
|
|
int
|
int
|
relax_segment (struct frag *segment_frag_root, segT segment, int pass)
|
relax_segment (struct frag *segment_frag_root, segT segment, int pass)
|
{
|
{
|
unsigned long frag_count;
|
unsigned long frag_count;
|
struct frag *fragP;
|
struct frag *fragP;
|
relax_addressT address;
|
relax_addressT address;
|
int region;
|
int region;
|
int ret;
|
int ret;
|
|
|
/* In case md_estimate_size_before_relax() wants to make fixSs. */
|
/* In case md_estimate_size_before_relax() wants to make fixSs. */
|
subseg_change (segment, 0);
|
subseg_change (segment, 0);
|
|
|
/* For each frag in segment: count and store (a 1st guess of)
|
/* For each frag in segment: count and store (a 1st guess of)
|
fr_address. */
|
fr_address. */
|
address = 0;
|
address = 0;
|
region = 0;
|
region = 0;
|
for (frag_count = 0, fragP = segment_frag_root;
|
for (frag_count = 0, fragP = segment_frag_root;
|
fragP;
|
fragP;
|
fragP = fragP->fr_next, frag_count ++)
|
fragP = fragP->fr_next, frag_count ++)
|
{
|
{
|
fragP->region = region;
|
fragP->region = region;
|
fragP->relax_marker = 0;
|
fragP->relax_marker = 0;
|
fragP->fr_address = address;
|
fragP->fr_address = address;
|
address += fragP->fr_fix;
|
address += fragP->fr_fix;
|
|
|
switch (fragP->fr_type)
|
switch (fragP->fr_type)
|
{
|
{
|
case rs_fill:
|
case rs_fill:
|
address += fragP->fr_offset * fragP->fr_var;
|
address += fragP->fr_offset * fragP->fr_var;
|
break;
|
break;
|
|
|
case rs_align:
|
case rs_align:
|
case rs_align_code:
|
case rs_align_code:
|
case rs_align_test:
|
case rs_align_test:
|
{
|
{
|
addressT offset = relax_align (address, (int) fragP->fr_offset);
|
addressT offset = relax_align (address, (int) fragP->fr_offset);
|
|
|
if (fragP->fr_subtype != 0 && offset > fragP->fr_subtype)
|
if (fragP->fr_subtype != 0 && offset > fragP->fr_subtype)
|
offset = 0;
|
offset = 0;
|
|
|
if (offset % fragP->fr_var != 0)
|
if (offset % fragP->fr_var != 0)
|
{
|
{
|
as_bad_where (fragP->fr_file, fragP->fr_line,
|
as_bad_where (fragP->fr_file, fragP->fr_line,
|
_("alignment padding (%lu bytes) not a multiple of %ld"),
|
_("alignment padding (%lu bytes) not a multiple of %ld"),
|
(unsigned long) offset, (long) fragP->fr_var);
|
(unsigned long) offset, (long) fragP->fr_var);
|
offset -= (offset % fragP->fr_var);
|
offset -= (offset % fragP->fr_var);
|
}
|
}
|
|
|
address += offset;
|
address += offset;
|
region += 1;
|
region += 1;
|
}
|
}
|
break;
|
break;
|
|
|
case rs_org:
|
case rs_org:
|
/* Assume .org is nugatory. It will grow with 1st relax. */
|
/* Assume .org is nugatory. It will grow with 1st relax. */
|
region += 1;
|
region += 1;
|
break;
|
break;
|
|
|
case rs_space:
|
case rs_space:
|
break;
|
break;
|
|
|
case rs_machine_dependent:
|
case rs_machine_dependent:
|
/* If fr_symbol is an expression, this call to
|
/* If fr_symbol is an expression, this call to
|
resolve_symbol_value sets up the correct segment, which will
|
resolve_symbol_value sets up the correct segment, which will
|
likely be needed in md_estimate_size_before_relax. */
|
likely be needed in md_estimate_size_before_relax. */
|
if (fragP->fr_symbol)
|
if (fragP->fr_symbol)
|
resolve_symbol_value (fragP->fr_symbol);
|
resolve_symbol_value (fragP->fr_symbol);
|
|
|
address += md_estimate_size_before_relax (fragP, segment);
|
address += md_estimate_size_before_relax (fragP, segment);
|
break;
|
break;
|
|
|
#ifndef WORKING_DOT_WORD
|
#ifndef WORKING_DOT_WORD
|
/* Broken words don't concern us yet. */
|
/* Broken words don't concern us yet. */
|
case rs_broken_word:
|
case rs_broken_word:
|
break;
|
break;
|
#endif
|
#endif
|
|
|
case rs_leb128:
|
case rs_leb128:
|
/* Initial guess is always 1; doing otherwise can result in
|
/* Initial guess is always 1; doing otherwise can result in
|
stable solutions that are larger than the minimum. */
|
stable solutions that are larger than the minimum. */
|
address += fragP->fr_offset = 1;
|
address += fragP->fr_offset = 1;
|
break;
|
break;
|
|
|
case rs_cfa:
|
case rs_cfa:
|
address += eh_frame_estimate_size_before_relax (fragP);
|
address += eh_frame_estimate_size_before_relax (fragP);
|
break;
|
break;
|
|
|
case rs_dwarf2dbg:
|
case rs_dwarf2dbg:
|
address += dwarf2dbg_estimate_size_before_relax (fragP);
|
address += dwarf2dbg_estimate_size_before_relax (fragP);
|
break;
|
break;
|
|
|
default:
|
default:
|
BAD_CASE (fragP->fr_type);
|
BAD_CASE (fragP->fr_type);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
/* Do relax(). */
|
/* Do relax(). */
|
{
|
{
|
unsigned long max_iterations;
|
unsigned long max_iterations;
|
|
|
/* Cumulative address adjustment. */
|
/* Cumulative address adjustment. */
|
offsetT stretch;
|
offsetT stretch;
|
|
|
/* Have we made any adjustment this pass? We can't just test
|
/* Have we made any adjustment this pass? We can't just test
|
stretch because one piece of code may have grown and another
|
stretch because one piece of code may have grown and another
|
shrank. */
|
shrank. */
|
int stretched;
|
int stretched;
|
|
|
/* Most horrible, but gcc may give us some exception data that
|
/* Most horrible, but gcc may give us some exception data that
|
is impossible to assemble, of the form
|
is impossible to assemble, of the form
|
|
|
.align 4
|
.align 4
|
.byte 0, 0
|
.byte 0, 0
|
.uleb128 end - start
|
.uleb128 end - start
|
start:
|
start:
|
.space 128*128 - 1
|
.space 128*128 - 1
|
.align 4
|
.align 4
|
end:
|
end:
|
|
|
If the leb128 is two bytes in size, then end-start is 128*128,
|
If the leb128 is two bytes in size, then end-start is 128*128,
|
which requires a three byte leb128. If the leb128 is three
|
which requires a three byte leb128. If the leb128 is three
|
bytes in size, then end-start is 128*128-1, which requires a
|
bytes in size, then end-start is 128*128-1, which requires a
|
two byte leb128. We work around this dilemma by inserting
|
two byte leb128. We work around this dilemma by inserting
|
an extra 4 bytes of alignment just after the .align. This
|
an extra 4 bytes of alignment just after the .align. This
|
works because the data after the align is accessed relative to
|
works because the data after the align is accessed relative to
|
the end label.
|
the end label.
|
|
|
This counter is used in a tiny state machine to detect
|
This counter is used in a tiny state machine to detect
|
whether a leb128 followed by an align is impossible to
|
whether a leb128 followed by an align is impossible to
|
relax. */
|
relax. */
|
int rs_leb128_fudge = 0;
|
int rs_leb128_fudge = 0;
|
|
|
/* We want to prevent going into an infinite loop where one frag grows
|
/* We want to prevent going into an infinite loop where one frag grows
|
depending upon the location of a symbol which is in turn moved by
|
depending upon the location of a symbol which is in turn moved by
|
the growing frag. eg:
|
the growing frag. eg:
|
|
|
foo = .
|
foo = .
|
.org foo+16
|
.org foo+16
|
foo = .
|
foo = .
|
|
|
So we dictate that this algorithm can be at most O2. */
|
So we dictate that this algorithm can be at most O2. */
|
max_iterations = frag_count * frag_count;
|
max_iterations = frag_count * frag_count;
|
/* Check for overflow. */
|
/* Check for overflow. */
|
if (max_iterations < frag_count)
|
if (max_iterations < frag_count)
|
max_iterations = frag_count;
|
max_iterations = frag_count;
|
|
|
ret = 0;
|
ret = 0;
|
do
|
do
|
{
|
{
|
stretch = 0;
|
stretch = 0;
|
stretched = 0;
|
stretched = 0;
|
|
|
for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
|
for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
|
{
|
{
|
offsetT growth = 0;
|
offsetT growth = 0;
|
addressT was_address;
|
addressT was_address;
|
offsetT offset;
|
offsetT offset;
|
symbolS *symbolP;
|
symbolS *symbolP;
|
|
|
fragP->relax_marker ^= 1;
|
fragP->relax_marker ^= 1;
|
was_address = fragP->fr_address;
|
was_address = fragP->fr_address;
|
address = fragP->fr_address += stretch;
|
address = fragP->fr_address += stretch;
|
symbolP = fragP->fr_symbol;
|
symbolP = fragP->fr_symbol;
|
offset = fragP->fr_offset;
|
offset = fragP->fr_offset;
|
|
|
switch (fragP->fr_type)
|
switch (fragP->fr_type)
|
{
|
{
|
case rs_fill: /* .fill never relaxes. */
|
case rs_fill: /* .fill never relaxes. */
|
growth = 0;
|
growth = 0;
|
break;
|
break;
|
|
|
#ifndef WORKING_DOT_WORD
|
#ifndef WORKING_DOT_WORD
|
/* JF: This is RMS's idea. I do *NOT* want to be blamed
|
/* JF: This is RMS's idea. I do *NOT* want to be blamed
|
for it I do not want to write it. I do not want to have
|
for it I do not want to write it. I do not want to have
|
anything to do with it. This is not the proper way to
|
anything to do with it. This is not the proper way to
|
implement this misfeature. */
|
implement this misfeature. */
|
case rs_broken_word:
|
case rs_broken_word:
|
{
|
{
|
struct broken_word *lie;
|
struct broken_word *lie;
|
struct broken_word *untruth;
|
struct broken_word *untruth;
|
|
|
/* Yes this is ugly (storing the broken_word pointer
|
/* Yes this is ugly (storing the broken_word pointer
|
in the symbol slot). Still, this whole chunk of
|
in the symbol slot). Still, this whole chunk of
|
code is ugly, and I don't feel like doing anything
|
code is ugly, and I don't feel like doing anything
|
about it. Think of it as stubbornness in action. */
|
about it. Think of it as stubbornness in action. */
|
growth = 0;
|
growth = 0;
|
for (lie = (struct broken_word *) (fragP->fr_symbol);
|
for (lie = (struct broken_word *) (fragP->fr_symbol);
|
lie && lie->dispfrag == fragP;
|
lie && lie->dispfrag == fragP;
|
lie = lie->next_broken_word)
|
lie = lie->next_broken_word)
|
{
|
{
|
|
|
if (lie->added)
|
if (lie->added)
|
continue;
|
continue;
|
|
|
offset = (S_GET_VALUE (lie->add)
|
offset = (S_GET_VALUE (lie->add)
|
+ lie->addnum
|
+ lie->addnum
|
- S_GET_VALUE (lie->sub));
|
- S_GET_VALUE (lie->sub));
|
if (offset <= -32768 || offset >= 32767)
|
if (offset <= -32768 || offset >= 32767)
|
{
|
{
|
if (flag_warn_displacement)
|
if (flag_warn_displacement)
|
{
|
{
|
char buf[50];
|
char buf[50];
|
sprint_value (buf, (addressT) lie->addnum);
|
sprint_value (buf, (addressT) lie->addnum);
|
as_warn_where (fragP->fr_file, fragP->fr_line,
|
as_warn_where (fragP->fr_file, fragP->fr_line,
|
_(".word %s-%s+%s didn't fit"),
|
_(".word %s-%s+%s didn't fit"),
|
S_GET_NAME (lie->add),
|
S_GET_NAME (lie->add),
|
S_GET_NAME (lie->sub),
|
S_GET_NAME (lie->sub),
|
buf);
|
buf);
|
}
|
}
|
if (fragP->fr_subtype == 0)
|
if (fragP->fr_subtype == 0)
|
{
|
{
|
fragP->fr_subtype++;
|
fragP->fr_subtype++;
|
growth += md_short_jump_size;
|
growth += md_short_jump_size;
|
}
|
}
|
|
|
/* Redirect *all* words of this table with the same
|
/* Redirect *all* words of this table with the same
|
target, lest we have to handle the case where the
|
target, lest we have to handle the case where the
|
same target but with a offset that fits on this
|
same target but with a offset that fits on this
|
round overflows at the next relaxation round. */
|
round overflows at the next relaxation round. */
|
for (untruth = (struct broken_word *) (fragP->fr_symbol);
|
for (untruth = (struct broken_word *) (fragP->fr_symbol);
|
untruth && untruth->dispfrag == lie->dispfrag;
|
untruth && untruth->dispfrag == lie->dispfrag;
|
untruth = untruth->next_broken_word)
|
untruth = untruth->next_broken_word)
|
if ((symbol_get_frag (untruth->add)
|
if ((symbol_get_frag (untruth->add)
|
== symbol_get_frag (lie->add))
|
== symbol_get_frag (lie->add))
|
&& (S_GET_VALUE (untruth->add)
|
&& (S_GET_VALUE (untruth->add)
|
== S_GET_VALUE (lie->add)))
|
== S_GET_VALUE (lie->add)))
|
{
|
{
|
untruth->added = 2;
|
untruth->added = 2;
|
untruth->use_jump = lie;
|
untruth->use_jump = lie;
|
}
|
}
|
|
|
lie->added = 1;
|
lie->added = 1;
|
growth += md_long_jump_size;
|
growth += md_long_jump_size;
|
}
|
}
|
}
|
}
|
|
|
break;
|
break;
|
} /* case rs_broken_word */
|
} /* case rs_broken_word */
|
#endif
|
#endif
|
case rs_align:
|
case rs_align:
|
case rs_align_code:
|
case rs_align_code:
|
case rs_align_test:
|
case rs_align_test:
|
{
|
{
|
addressT oldoff, newoff;
|
addressT oldoff, newoff;
|
|
|
oldoff = relax_align (was_address + fragP->fr_fix,
|
oldoff = relax_align (was_address + fragP->fr_fix,
|
(int) offset);
|
(int) offset);
|
newoff = relax_align (address + fragP->fr_fix,
|
newoff = relax_align (address + fragP->fr_fix,
|
(int) offset);
|
(int) offset);
|
|
|
if (fragP->fr_subtype != 0)
|
if (fragP->fr_subtype != 0)
|
{
|
{
|
if (oldoff > fragP->fr_subtype)
|
if (oldoff > fragP->fr_subtype)
|
oldoff = 0;
|
oldoff = 0;
|
if (newoff > fragP->fr_subtype)
|
if (newoff > fragP->fr_subtype)
|
newoff = 0;
|
newoff = 0;
|
}
|
}
|
|
|
growth = newoff - oldoff;
|
growth = newoff - oldoff;
|
|
|
/* If this align happens to follow a leb128 and
|
/* If this align happens to follow a leb128 and
|
we have determined that the leb128 is bouncing
|
we have determined that the leb128 is bouncing
|
in size, then break the cycle by inserting an
|
in size, then break the cycle by inserting an
|
extra alignment. */
|
extra alignment. */
|
if (growth < 0
|
if (growth < 0
|
&& (rs_leb128_fudge & 16) != 0
|
&& (rs_leb128_fudge & 16) != 0
|
&& (rs_leb128_fudge & 15) >= 2)
|
&& (rs_leb128_fudge & 15) >= 2)
|
{
|
{
|
segment_info_type *seginfo = seg_info (segment);
|
segment_info_type *seginfo = seg_info (segment);
|
struct obstack *ob = &seginfo->frchainP->frch_obstack;
|
struct obstack *ob = &seginfo->frchainP->frch_obstack;
|
struct frag *newf;
|
struct frag *newf;
|
|
|
newf = frag_alloc (ob);
|
newf = frag_alloc (ob);
|
obstack_blank_fast (ob, fragP->fr_var);
|
obstack_blank_fast (ob, fragP->fr_var);
|
obstack_finish (ob);
|
obstack_finish (ob);
|
memcpy (newf, fragP, SIZEOF_STRUCT_FRAG);
|
memcpy (newf, fragP, SIZEOF_STRUCT_FRAG);
|
memcpy (newf->fr_literal,
|
memcpy (newf->fr_literal,
|
fragP->fr_literal + fragP->fr_fix,
|
fragP->fr_literal + fragP->fr_fix,
|
fragP->fr_var);
|
fragP->fr_var);
|
newf->fr_type = rs_fill;
|
newf->fr_type = rs_fill;
|
newf->fr_address = address + fragP->fr_fix + newoff;
|
newf->fr_address = address + fragP->fr_fix + newoff;
|
newf->fr_fix = 0;
|
newf->fr_fix = 0;
|
newf->fr_offset = (((offsetT) 1 << fragP->fr_offset)
|
newf->fr_offset = (((offsetT) 1 << fragP->fr_offset)
|
/ fragP->fr_var);
|
/ fragP->fr_var);
|
if (newf->fr_offset * newf->fr_var
|
if (newf->fr_offset * newf->fr_var
|
!= (offsetT) 1 << fragP->fr_offset)
|
!= (offsetT) 1 << fragP->fr_offset)
|
{
|
{
|
newf->fr_offset = (offsetT) 1 << fragP->fr_offset;
|
newf->fr_offset = (offsetT) 1 << fragP->fr_offset;
|
newf->fr_var = 1;
|
newf->fr_var = 1;
|
}
|
}
|
/* Include size of new frag in GROWTH. */
|
/* Include size of new frag in GROWTH. */
|
growth += newf->fr_offset * newf->fr_var;
|
growth += newf->fr_offset * newf->fr_var;
|
/* Adjust the new frag address for the amount
|
/* Adjust the new frag address for the amount
|
we'll add when we process the new frag. */
|
we'll add when we process the new frag. */
|
newf->fr_address -= stretch + growth;
|
newf->fr_address -= stretch + growth;
|
newf->relax_marker ^= 1;
|
newf->relax_marker ^= 1;
|
fragP->fr_next = newf;
|
fragP->fr_next = newf;
|
#ifdef DEBUG
|
#ifdef DEBUG
|
as_warn (_("padding added"));
|
as_warn (_("padding added"));
|
#endif
|
#endif
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case rs_org:
|
case rs_org:
|
{
|
{
|
addressT target = offset;
|
addressT target = offset;
|
addressT after;
|
addressT after;
|
|
|
if (symbolP)
|
if (symbolP)
|
{
|
{
|
/* Convert from an actual address to an octet offset
|
/* Convert from an actual address to an octet offset
|
into the section. Here it is assumed that the
|
into the section. Here it is assumed that the
|
section's VMA is zero, and can omit subtracting it
|
section's VMA is zero, and can omit subtracting it
|
from the symbol's value to get the address offset. */
|
from the symbol's value to get the address offset. */
|
know (S_GET_SEGMENT (symbolP)->vma == 0);
|
know (S_GET_SEGMENT (symbolP)->vma == 0);
|
target += S_GET_VALUE (symbolP) * OCTETS_PER_BYTE;
|
target += S_GET_VALUE (symbolP) * OCTETS_PER_BYTE;
|
}
|
}
|
|
|
know (fragP->fr_next);
|
know (fragP->fr_next);
|
after = fragP->fr_next->fr_address + stretch;
|
after = fragP->fr_next->fr_address + stretch;
|
growth = target - after;
|
growth = target - after;
|
if (growth < 0)
|
if (growth < 0)
|
{
|
{
|
growth = 0;
|
growth = 0;
|
|
|
/* Don't error on first few frag relax passes.
|
/* Don't error on first few frag relax passes.
|
The symbol might be an expression involving
|
The symbol might be an expression involving
|
symbol values from other sections. If those
|
symbol values from other sections. If those
|
sections have not yet been processed their
|
sections have not yet been processed their
|
frags will all have zero addresses, so we
|
frags will all have zero addresses, so we
|
will calculate incorrect values for them. The
|
will calculate incorrect values for them. The
|
number of passes we allow before giving an
|
number of passes we allow before giving an
|
error is somewhat arbitrary. It should be at
|
error is somewhat arbitrary. It should be at
|
least one, with larger values requiring
|
least one, with larger values requiring
|
increasingly contrived dependencies between
|
increasingly contrived dependencies between
|
frags to trigger a false error. */
|
frags to trigger a false error. */
|
if (pass < 2)
|
if (pass < 2)
|
{
|
{
|
/* Force another pass. */
|
/* Force another pass. */
|
ret = 1;
|
ret = 1;
|
break;
|
break;
|
}
|
}
|
|
|
/* Growth may be negative, but variable part of frag
|
/* Growth may be negative, but variable part of frag
|
cannot have fewer than 0 chars. That is, we can't
|
cannot have fewer than 0 chars. That is, we can't
|
.org backwards. */
|
.org backwards. */
|
as_bad_where (fragP->fr_file, fragP->fr_line,
|
as_bad_where (fragP->fr_file, fragP->fr_line,
|
_("attempt to move .org backwards"));
|
_("attempt to move .org backwards"));
|
|
|
/* We've issued an error message. Change the
|
/* We've issued an error message. Change the
|
frag to avoid cascading errors. */
|
frag to avoid cascading errors. */
|
fragP->fr_type = rs_align;
|
fragP->fr_type = rs_align;
|
fragP->fr_subtype = 0;
|
fragP->fr_subtype = 0;
|
fragP->fr_offset = 0;
|
fragP->fr_offset = 0;
|
fragP->fr_fix = after - address;
|
fragP->fr_fix = after - address;
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case rs_space:
|
case rs_space:
|
growth = 0;
|
growth = 0;
|
if (symbolP)
|
if (symbolP)
|
{
|
{
|
offsetT amount;
|
offsetT amount;
|
|
|
amount = S_GET_VALUE (symbolP);
|
amount = S_GET_VALUE (symbolP);
|
if (S_GET_SEGMENT (symbolP) != absolute_section
|
if (S_GET_SEGMENT (symbolP) != absolute_section
|
|| S_IS_COMMON (symbolP)
|
|| S_IS_COMMON (symbolP)
|
|| ! S_IS_DEFINED (symbolP))
|
|| ! S_IS_DEFINED (symbolP))
|
{
|
{
|
as_bad_where (fragP->fr_file, fragP->fr_line,
|
as_bad_where (fragP->fr_file, fragP->fr_line,
|
_(".space specifies non-absolute value"));
|
_(".space specifies non-absolute value"));
|
/* Prevent repeat of this error message. */
|
/* Prevent repeat of this error message. */
|
fragP->fr_symbol = 0;
|
fragP->fr_symbol = 0;
|
}
|
}
|
else if (amount < 0)
|
else if (amount < 0)
|
{
|
{
|
/* Don't error on first few frag relax passes.
|
/* Don't error on first few frag relax passes.
|
See rs_org comment for a longer explanation. */
|
See rs_org comment for a longer explanation. */
|
if (pass < 2)
|
if (pass < 2)
|
{
|
{
|
ret = 1;
|
ret = 1;
|
break;
|
break;
|
}
|
}
|
|
|
as_warn_where (fragP->fr_file, fragP->fr_line,
|
as_warn_where (fragP->fr_file, fragP->fr_line,
|
_(".space or .fill with negative value, ignored"));
|
_(".space or .fill with negative value, ignored"));
|
fragP->fr_symbol = 0;
|
fragP->fr_symbol = 0;
|
}
|
}
|
else
|
else
|
growth = (was_address + fragP->fr_fix + amount
|
growth = (was_address + fragP->fr_fix + amount
|
- fragP->fr_next->fr_address);
|
- fragP->fr_next->fr_address);
|
}
|
}
|
break;
|
break;
|
|
|
case rs_machine_dependent:
|
case rs_machine_dependent:
|
#ifdef md_relax_frag
|
#ifdef md_relax_frag
|
growth = md_relax_frag (segment, fragP, stretch);
|
growth = md_relax_frag (segment, fragP, stretch);
|
#else
|
#else
|
#ifdef TC_GENERIC_RELAX_TABLE
|
#ifdef TC_GENERIC_RELAX_TABLE
|
/* The default way to relax a frag is to look through
|
/* The default way to relax a frag is to look through
|
TC_GENERIC_RELAX_TABLE. */
|
TC_GENERIC_RELAX_TABLE. */
|
growth = relax_frag (segment, fragP, stretch);
|
growth = relax_frag (segment, fragP, stretch);
|
#endif /* TC_GENERIC_RELAX_TABLE */
|
#endif /* TC_GENERIC_RELAX_TABLE */
|
#endif
|
#endif
|
break;
|
break;
|
|
|
case rs_leb128:
|
case rs_leb128:
|
{
|
{
|
valueT value;
|
valueT value;
|
offsetT size;
|
offsetT size;
|
|
|
value = resolve_symbol_value (fragP->fr_symbol);
|
value = resolve_symbol_value (fragP->fr_symbol);
|
size = sizeof_leb128 (value, fragP->fr_subtype);
|
size = sizeof_leb128 (value, fragP->fr_subtype);
|
growth = size - fragP->fr_offset;
|
growth = size - fragP->fr_offset;
|
fragP->fr_offset = size;
|
fragP->fr_offset = size;
|
}
|
}
|
break;
|
break;
|
|
|
case rs_cfa:
|
case rs_cfa:
|
growth = eh_frame_relax_frag (fragP);
|
growth = eh_frame_relax_frag (fragP);
|
break;
|
break;
|
|
|
case rs_dwarf2dbg:
|
case rs_dwarf2dbg:
|
growth = dwarf2dbg_relax_frag (fragP);
|
growth = dwarf2dbg_relax_frag (fragP);
|
break;
|
break;
|
|
|
default:
|
default:
|
BAD_CASE (fragP->fr_type);
|
BAD_CASE (fragP->fr_type);
|
break;
|
break;
|
}
|
}
|
if (growth)
|
if (growth)
|
{
|
{
|
stretch += growth;
|
stretch += growth;
|
stretched = 1;
|
stretched = 1;
|
if (fragP->fr_type == rs_leb128)
|
if (fragP->fr_type == rs_leb128)
|
rs_leb128_fudge += 16;
|
rs_leb128_fudge += 16;
|
else if (fragP->fr_type == rs_align
|
else if (fragP->fr_type == rs_align
|
&& (rs_leb128_fudge & 16) != 0
|
&& (rs_leb128_fudge & 16) != 0
|
&& stretch == 0)
|
&& stretch == 0)
|
rs_leb128_fudge += 16;
|
rs_leb128_fudge += 16;
|
else
|
else
|
rs_leb128_fudge = 0;
|
rs_leb128_fudge = 0;
|
}
|
}
|
}
|
}
|
|
|
if (stretch == 0
|
if (stretch == 0
|
&& (rs_leb128_fudge & 16) == 0
|
&& (rs_leb128_fudge & 16) == 0
|
&& (rs_leb128_fudge & -16) != 0)
|
&& (rs_leb128_fudge & -16) != 0)
|
rs_leb128_fudge += 1;
|
rs_leb128_fudge += 1;
|
else
|
else
|
rs_leb128_fudge = 0;
|
rs_leb128_fudge = 0;
|
}
|
}
|
/* Until nothing further to relax. */
|
/* Until nothing further to relax. */
|
while (stretched && -- max_iterations);
|
while (stretched && -- max_iterations);
|
|
|
if (stretched)
|
if (stretched)
|
as_fatal (_("Infinite loop encountered whilst attempting to compute the addresses of symbols in section %s"),
|
as_fatal (_("Infinite loop encountered whilst attempting to compute the addresses of symbols in section %s"),
|
segment_name (segment));
|
segment_name (segment));
|
}
|
}
|
|
|
for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
|
for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
|
if (fragP->last_fr_address != fragP->fr_address)
|
if (fragP->last_fr_address != fragP->fr_address)
|
{
|
{
|
fragP->last_fr_address = fragP->fr_address;
|
fragP->last_fr_address = fragP->fr_address;
|
ret = 1;
|
ret = 1;
|
}
|
}
|
return ret;
|
return ret;
|
}
|
}
|
|
|
void
|
void
|
number_to_chars_bigendian (char *buf, valueT val, int n)
|
number_to_chars_bigendian (char *buf, valueT val, int n)
|
{
|
{
|
if (n <= 0)
|
if (n <= 0)
|
abort ();
|
abort ();
|
while (n--)
|
while (n--)
|
{
|
{
|
buf[n] = val & 0xff;
|
buf[n] = val & 0xff;
|
val >>= 8;
|
val >>= 8;
|
}
|
}
|
}
|
}
|
|
|
void
|
void
|
number_to_chars_littleendian (char *buf, valueT val, int n)
|
number_to_chars_littleendian (char *buf, valueT val, int n)
|
{
|
{
|
if (n <= 0)
|
if (n <= 0)
|
abort ();
|
abort ();
|
while (n--)
|
while (n--)
|
{
|
{
|
*buf++ = val & 0xff;
|
*buf++ = val & 0xff;
|
val >>= 8;
|
val >>= 8;
|
}
|
}
|
}
|
}
|
|
|
void
|
void
|
write_print_statistics (FILE *file)
|
write_print_statistics (FILE *file)
|
{
|
{
|
fprintf (file, "fixups: %d\n", n_fixups);
|
fprintf (file, "fixups: %d\n", n_fixups);
|
}
|
}
|
|
|
/* For debugging. */
|
/* For debugging. */
|
extern int indent_level;
|
extern int indent_level;
|
|
|
void
|
void
|
print_fixup (fixS *fixp)
|
print_fixup (fixS *fixp)
|
{
|
{
|
indent_level = 1;
|
indent_level = 1;
|
fprintf (stderr, "fix ");
|
fprintf (stderr, "fix ");
|
fprintf_vma (stderr, (bfd_vma)((bfd_hostptr_t) fixp));
|
fprintf_vma (stderr, (bfd_vma)((bfd_hostptr_t) fixp));
|
fprintf (stderr, " %s:%d",fixp->fx_file, fixp->fx_line);
|
fprintf (stderr, " %s:%d",fixp->fx_file, fixp->fx_line);
|
if (fixp->fx_pcrel)
|
if (fixp->fx_pcrel)
|
fprintf (stderr, " pcrel");
|
fprintf (stderr, " pcrel");
|
if (fixp->fx_pcrel_adjust)
|
if (fixp->fx_pcrel_adjust)
|
fprintf (stderr, " pcrel_adjust=%d", fixp->fx_pcrel_adjust);
|
fprintf (stderr, " pcrel_adjust=%d", fixp->fx_pcrel_adjust);
|
if (fixp->fx_im_disp)
|
if (fixp->fx_im_disp)
|
{
|
{
|
#ifdef TC_NS32K
|
#ifdef TC_NS32K
|
fprintf (stderr, " im_disp=%d", fixp->fx_im_disp);
|
fprintf (stderr, " im_disp=%d", fixp->fx_im_disp);
|
#else
|
#else
|
fprintf (stderr, " im_disp");
|
fprintf (stderr, " im_disp");
|
#endif
|
#endif
|
}
|
}
|
if (fixp->fx_tcbit)
|
if (fixp->fx_tcbit)
|
fprintf (stderr, " tcbit");
|
fprintf (stderr, " tcbit");
|
if (fixp->fx_done)
|
if (fixp->fx_done)
|
fprintf (stderr, " done");
|
fprintf (stderr, " done");
|
fprintf (stderr, "\n size=%d frag=", fixp->fx_size);
|
fprintf (stderr, "\n size=%d frag=", fixp->fx_size);
|
fprintf_vma (stderr, (bfd_vma) ((bfd_hostptr_t) fixp->fx_frag));
|
fprintf_vma (stderr, (bfd_vma) ((bfd_hostptr_t) fixp->fx_frag));
|
fprintf (stderr, " where=%ld offset=%lx addnumber=%lx",
|
fprintf (stderr, " where=%ld offset=%lx addnumber=%lx",
|
(long) fixp->fx_where,
|
(long) fixp->fx_where,
|
(unsigned long) fixp->fx_offset,
|
(unsigned long) fixp->fx_offset,
|
(unsigned long) fixp->fx_addnumber);
|
(unsigned long) fixp->fx_addnumber);
|
fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type),
|
fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type),
|
fixp->fx_r_type);
|
fixp->fx_r_type);
|
if (fixp->fx_addsy)
|
if (fixp->fx_addsy)
|
{
|
{
|
fprintf (stderr, "\n +<");
|
fprintf (stderr, "\n +<");
|
print_symbol_value_1 (stderr, fixp->fx_addsy);
|
print_symbol_value_1 (stderr, fixp->fx_addsy);
|
fprintf (stderr, ">");
|
fprintf (stderr, ">");
|
}
|
}
|
if (fixp->fx_subsy)
|
if (fixp->fx_subsy)
|
{
|
{
|
fprintf (stderr, "\n -<");
|
fprintf (stderr, "\n -<");
|
print_symbol_value_1 (stderr, fixp->fx_subsy);
|
print_symbol_value_1 (stderr, fixp->fx_subsy);
|
fprintf (stderr, ">");
|
fprintf (stderr, ">");
|
}
|
}
|
fprintf (stderr, "\n");
|
fprintf (stderr, "\n");
|
#ifdef TC_FIX_DATA_PRINT
|
#ifdef TC_FIX_DATA_PRINT
|
TC_FIX_DATA_PRINT (stderr, fixp);
|
TC_FIX_DATA_PRINT (stderr, fixp);
|
#endif
|
#endif
|
}
|
}
|
|
|
