/* GAS interface for targets using CGEN: Cpu tools GENerator.
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/* GAS interface for targets using CGEN: Cpu tools GENerator.
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Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2006, 2007, 2009, 2010 Free Software Foundation, Inc.
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2006, 2007, 2009, 2010, 2011 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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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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GAS is distributed in the hope that it will be useful, but WITHOUT
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GAS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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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 Software
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along with GAS; see the file COPYING. If not, write to the Free Software
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Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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#include <setjmp.h>
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#include <setjmp.h>
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#include "as.h"
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#include "as.h"
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#include "symcat.h"
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#include "symcat.h"
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#include "cgen-desc.h"
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#include "cgen-desc.h"
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#include "subsegs.h"
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#include "subsegs.h"
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#include "cgen.h"
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#include "cgen.h"
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#include "dwarf2dbg.h"
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#include "dwarf2dbg.h"
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#include "symbols.h"
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#include "symbols.h"
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#include "struc-symbol.h"
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#include "struc-symbol.h"
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#ifdef OBJ_COMPLEX_RELC
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#ifdef OBJ_COMPLEX_RELC
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static expressionS * make_right_shifted_expr
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static expressionS * make_right_shifted_expr
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(expressionS *, const int, const int);
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(expressionS *, const int, const int);
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static unsigned long gas_cgen_encode_addend
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static unsigned long gas_cgen_encode_addend
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(const unsigned long, const unsigned long, const unsigned long, \
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(const unsigned long, const unsigned long, const unsigned long, \
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const unsigned long, const unsigned long, const unsigned long, \
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const unsigned long, const unsigned long, const unsigned long, \
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const unsigned long);
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const unsigned long);
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static char * weak_operand_overflow_check
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static char * weak_operand_overflow_check
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(const expressionS *, const CGEN_OPERAND *);
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(const expressionS *, const CGEN_OPERAND *);
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static void queue_fixup_recursively
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static void queue_fixup_recursively
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(const int, const int, expressionS *, \
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(const int, const int, expressionS *, \
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const CGEN_MAYBE_MULTI_IFLD *, const int, const int);
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const CGEN_MAYBE_MULTI_IFLD *, const int, const int);
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static int rightshift = 0;
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static int rightshift = 0;
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#endif
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#endif
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static void queue_fixup (int, int, expressionS *);
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static void queue_fixup (int, int, expressionS *);
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/* Opcode table descriptor, must be set by md_begin. */
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/* Opcode table descriptor, must be set by md_begin. */
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CGEN_CPU_DESC gas_cgen_cpu_desc;
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CGEN_CPU_DESC gas_cgen_cpu_desc;
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/* Callback to insert a register into the symbol table.
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/* Callback to insert a register into the symbol table.
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A target may choose to let GAS parse the registers.
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A target may choose to let GAS parse the registers.
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??? Not currently used. */
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??? Not currently used. */
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void
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void
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cgen_asm_record_register (name, number)
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cgen_asm_record_register (name, number)
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char *name;
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char *name;
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int number;
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int number;
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{
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{
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/* Use symbol_create here instead of symbol_new so we don't try to
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/* Use symbol_create here instead of symbol_new so we don't try to
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output registers into the object file's symbol table. */
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output registers into the object file's symbol table. */
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symbol_table_insert (symbol_create (name, reg_section,
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symbol_table_insert (symbol_create (name, reg_section,
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number, &zero_address_frag));
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number, &zero_address_frag));
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}
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}
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/* We need to keep a list of fixups. We can't simply generate them as
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/* We need to keep a list of fixups. We can't simply generate them as
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we go, because that would require us to first create the frag, and
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we go, because that would require us to first create the frag, and
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that would screw up references to ``.''.
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that would screw up references to ``.''.
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This is used by cpu's with simple operands. It keeps knowledge of what
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This is used by cpu's with simple operands. It keeps knowledge of what
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an `expressionS' is and what a `fixup' is out of CGEN which for the time
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an `expressionS' is and what a `fixup' is out of CGEN which for the time
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being is preferable.
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being is preferable.
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OPINDEX is the index in the operand table.
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OPINDEX is the index in the operand table.
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OPINFO is something the caller chooses to help in reloc determination. */
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OPINFO is something the caller chooses to help in reloc determination. */
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struct fixup
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struct fixup
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{
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{
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int opindex;
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int opindex;
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int opinfo;
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int opinfo;
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expressionS exp;
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expressionS exp;
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struct cgen_maybe_multi_ifield * field;
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struct cgen_maybe_multi_ifield * field;
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int msb_field_p;
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int msb_field_p;
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};
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};
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static struct fixup fixups[GAS_CGEN_MAX_FIXUPS];
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static struct fixup fixups[GAS_CGEN_MAX_FIXUPS];
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static int num_fixups;
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static int num_fixups;
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/* Prepare to parse an instruction.
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/* Prepare to parse an instruction.
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??? May wish to make this static and delete calls in md_assemble. */
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??? May wish to make this static and delete calls in md_assemble. */
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void
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void
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gas_cgen_init_parse ()
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gas_cgen_init_parse ()
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{
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{
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num_fixups = 0;
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num_fixups = 0;
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}
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}
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/* Queue a fixup. */
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/* Queue a fixup. */
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static void
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static void
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queue_fixup (opindex, opinfo, expP)
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queue_fixup (opindex, opinfo, expP)
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int opindex;
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int opindex;
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int opinfo;
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int opinfo;
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expressionS * expP;
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expressionS * expP;
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{
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{
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/* We need to generate a fixup for this expression. */
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/* We need to generate a fixup for this expression. */
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if (num_fixups >= GAS_CGEN_MAX_FIXUPS)
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if (num_fixups >= GAS_CGEN_MAX_FIXUPS)
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as_fatal (_("too many fixups"));
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as_fatal (_("too many fixups"));
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fixups[num_fixups].exp = *expP;
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fixups[num_fixups].exp = *expP;
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fixups[num_fixups].opindex = opindex;
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fixups[num_fixups].opindex = opindex;
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fixups[num_fixups].opinfo = opinfo;
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fixups[num_fixups].opinfo = opinfo;
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++ num_fixups;
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++ num_fixups;
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}
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}
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/* The following functions allow fixup chains to be stored, retrieved,
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/* The following functions allow fixup chains to be stored, retrieved,
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and swapped. They are a generalization of a pre-existing scheme
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and swapped. They are a generalization of a pre-existing scheme
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for storing, restoring and swapping fixup chains that was used by
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for storing, restoring and swapping fixup chains that was used by
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the m32r port. The functionality is essentially the same, only
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the m32r port. The functionality is essentially the same, only
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instead of only being able to store a single fixup chain, an entire
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instead of only being able to store a single fixup chain, an entire
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array of fixup chains can be stored. It is the user's responsibility
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array of fixup chains can be stored. It is the user's responsibility
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to keep track of how many fixup chains have been stored and which
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to keep track of how many fixup chains have been stored and which
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elements of the array they are in.
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elements of the array they are in.
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The algorithms used are the same as in the old scheme. Other than the
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The algorithms used are the same as in the old scheme. Other than the
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"array-ness" of the whole thing, the functionality is identical to the
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"array-ness" of the whole thing, the functionality is identical to the
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old scheme.
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old scheme.
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gas_cgen_initialize_saved_fixups_array():
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gas_cgen_initialize_saved_fixups_array():
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Sets num_fixups_in_chain to 0 for each element. Call this from
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Sets num_fixups_in_chain to 0 for each element. Call this from
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md_begin() if you plan to use these functions and you want the
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md_begin() if you plan to use these functions and you want the
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fixup count in each element to be set to 0 initially. This is
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fixup count in each element to be set to 0 initially. This is
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not necessary, but it's included just in case. It performs
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not necessary, but it's included just in case. It performs
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the same function for each element in the array of fixup chains
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the same function for each element in the array of fixup chains
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that gas_init_parse() performs for the current fixups.
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that gas_init_parse() performs for the current fixups.
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gas_cgen_save_fixups (element):
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gas_cgen_save_fixups (element):
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element - element number of the array you wish to store the fixups
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element - element number of the array you wish to store the fixups
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to. No mechanism is built in for tracking what element
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to. No mechanism is built in for tracking what element
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was last stored to.
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was last stored to.
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gas_cgen_restore_fixups (element):
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gas_cgen_restore_fixups (element):
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element - element number of the array you wish to restore the fixups
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element - element number of the array you wish to restore the fixups
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from.
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from.
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gas_cgen_swap_fixups(int element):
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gas_cgen_swap_fixups(int element):
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element - swap the current fixups with those in this element number.
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element - swap the current fixups with those in this element number.
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*/
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*/
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struct saved_fixups
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struct saved_fixups
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{
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{
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struct fixup fixup_chain[GAS_CGEN_MAX_FIXUPS];
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struct fixup fixup_chain[GAS_CGEN_MAX_FIXUPS];
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int num_fixups_in_chain;
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int num_fixups_in_chain;
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};
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};
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static struct saved_fixups stored_fixups[MAX_SAVED_FIXUP_CHAINS];
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static struct saved_fixups stored_fixups[MAX_SAVED_FIXUP_CHAINS];
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void
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void
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gas_cgen_initialize_saved_fixups_array ()
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gas_cgen_initialize_saved_fixups_array ()
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{
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{
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int i = 0;
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int i = 0;
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while (i < MAX_SAVED_FIXUP_CHAINS)
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while (i < MAX_SAVED_FIXUP_CHAINS)
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stored_fixups[i++].num_fixups_in_chain = 0;
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stored_fixups[i++].num_fixups_in_chain = 0;
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}
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}
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void
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void
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gas_cgen_save_fixups (i)
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gas_cgen_save_fixups (i)
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int i;
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int i;
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{
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{
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if (i < 0 || i >= MAX_SAVED_FIXUP_CHAINS)
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if (i < 0 || i >= MAX_SAVED_FIXUP_CHAINS)
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{
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{
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as_fatal ("index into stored_fixups[] out of bounds");
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as_fatal ("index into stored_fixups[] out of bounds");
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return;
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return;
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}
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}
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stored_fixups[i].num_fixups_in_chain = num_fixups;
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stored_fixups[i].num_fixups_in_chain = num_fixups;
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memcpy (stored_fixups[i].fixup_chain, fixups,
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memcpy (stored_fixups[i].fixup_chain, fixups,
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sizeof (fixups[0]) * num_fixups);
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sizeof (fixups[0]) * num_fixups);
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num_fixups = 0;
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num_fixups = 0;
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}
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}
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void
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void
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gas_cgen_restore_fixups (i)
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gas_cgen_restore_fixups (i)
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int i;
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int i;
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{
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{
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if (i < 0 || i >= MAX_SAVED_FIXUP_CHAINS)
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if (i < 0 || i >= MAX_SAVED_FIXUP_CHAINS)
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{
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{
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as_fatal ("index into stored_fixups[] out of bounds");
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as_fatal ("index into stored_fixups[] out of bounds");
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return;
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return;
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}
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}
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num_fixups = stored_fixups[i].num_fixups_in_chain;
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num_fixups = stored_fixups[i].num_fixups_in_chain;
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memcpy (fixups, stored_fixups[i].fixup_chain,
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memcpy (fixups, stored_fixups[i].fixup_chain,
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(sizeof (stored_fixups[i].fixup_chain[0])) * num_fixups);
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(sizeof (stored_fixups[i].fixup_chain[0])) * num_fixups);
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stored_fixups[i].num_fixups_in_chain = 0;
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stored_fixups[i].num_fixups_in_chain = 0;
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}
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}
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void
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void
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gas_cgen_swap_fixups (i)
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gas_cgen_swap_fixups (i)
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int i;
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int i;
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{
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{
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if (i < 0 || i >= MAX_SAVED_FIXUP_CHAINS)
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if (i < 0 || i >= MAX_SAVED_FIXUP_CHAINS)
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{
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{
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as_fatal ("index into stored_fixups[] out of bounds");
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as_fatal ("index into stored_fixups[] out of bounds");
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return;
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return;
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}
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}
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if (num_fixups == 0)
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if (num_fixups == 0)
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gas_cgen_restore_fixups (i);
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gas_cgen_restore_fixups (i);
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else if (stored_fixups[i].num_fixups_in_chain == 0)
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else if (stored_fixups[i].num_fixups_in_chain == 0)
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gas_cgen_save_fixups (i);
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gas_cgen_save_fixups (i);
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else
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else
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{
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{
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int tmp;
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int tmp;
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struct fixup tmp_fixup;
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struct fixup tmp_fixup;
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tmp = stored_fixups[i].num_fixups_in_chain;
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tmp = stored_fixups[i].num_fixups_in_chain;
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stored_fixups[i].num_fixups_in_chain = num_fixups;
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stored_fixups[i].num_fixups_in_chain = num_fixups;
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num_fixups = tmp;
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num_fixups = tmp;
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for (tmp = GAS_CGEN_MAX_FIXUPS; tmp--;)
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for (tmp = GAS_CGEN_MAX_FIXUPS; tmp--;)
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{
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{
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tmp_fixup = stored_fixups[i].fixup_chain [tmp];
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tmp_fixup = stored_fixups[i].fixup_chain [tmp];
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stored_fixups[i].fixup_chain[tmp] = fixups [tmp];
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stored_fixups[i].fixup_chain[tmp] = fixups [tmp];
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fixups [tmp] = tmp_fixup;
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fixups [tmp] = tmp_fixup;
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}
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}
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}
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}
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}
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}
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/* Default routine to record a fixup.
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/* Default routine to record a fixup.
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This is a cover function to fix_new.
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This is a cover function to fix_new.
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It exists because we record INSN with the fixup.
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It exists because we record INSN with the fixup.
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FRAG and WHERE are their respective arguments to fix_new_exp.
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FRAG and WHERE are their respective arguments to fix_new_exp.
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LENGTH is in bits.
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LENGTH is in bits.
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OPINFO is something the caller chooses to help in reloc determination.
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OPINFO is something the caller chooses to help in reloc determination.
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At this point we do not use a bfd_reloc_code_real_type for
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At this point we do not use a bfd_reloc_code_real_type for
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operands residing in the insn, but instead just use the
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operands residing in the insn, but instead just use the
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operand index. This lets us easily handle fixups for any
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operand index. This lets us easily handle fixups for any
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operand type. We pick a BFD reloc type in md_apply_fix. */
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operand type. We pick a BFD reloc type in md_apply_fix. */
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fixS *
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fixS *
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gas_cgen_record_fixup (frag, where, insn, length, operand, opinfo, symbol, offset)
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gas_cgen_record_fixup (frag, where, insn, length, operand, opinfo, symbol, offset)
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fragS * frag;
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fragS * frag;
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int where;
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int where;
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const CGEN_INSN * insn;
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const CGEN_INSN * insn;
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int length;
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int length;
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const CGEN_OPERAND * operand;
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const CGEN_OPERAND * operand;
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int opinfo;
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int opinfo;
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symbolS * symbol;
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symbolS * symbol;
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offsetT offset;
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offsetT offset;
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{
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{
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fixS *fixP;
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fixS *fixP;
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/* It may seem strange to use operand->attrs and not insn->attrs here,
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/* It may seem strange to use operand->attrs and not insn->attrs here,
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but it is the operand that has a pc relative relocation. */
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but it is the operand that has a pc relative relocation. */
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fixP = fix_new (frag, where, length / 8, symbol, offset,
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fixP = fix_new (frag, where, length / 8, symbol, offset,
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CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_PCREL_ADDR),
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CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_PCREL_ADDR),
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(bfd_reloc_code_real_type)
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(bfd_reloc_code_real_type)
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((int) BFD_RELOC_UNUSED
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((int) BFD_RELOC_UNUSED
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+ (int) operand->type));
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+ (int) operand->type));
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fixP->fx_cgen.insn = insn;
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fixP->fx_cgen.insn = insn;
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fixP->fx_cgen.opinfo = opinfo;
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fixP->fx_cgen.opinfo = opinfo;
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fixP->fx_cgen.field = NULL;
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fixP->fx_cgen.field = NULL;
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fixP->fx_cgen.msb_field_p = 0;
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fixP->fx_cgen.msb_field_p = 0;
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|
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return fixP;
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return fixP;
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}
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}
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|
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/* Default routine to record a fixup given an expression.
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/* Default routine to record a fixup given an expression.
|
This is a cover function to fix_new_exp.
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This is a cover function to fix_new_exp.
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It exists because we record INSN with the fixup.
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It exists because we record INSN with the fixup.
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FRAG and WHERE are their respective arguments to fix_new_exp.
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FRAG and WHERE are their respective arguments to fix_new_exp.
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LENGTH is in bits.
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LENGTH is in bits.
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OPINFO is something the caller chooses to help in reloc determination.
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OPINFO is something the caller chooses to help in reloc determination.
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|
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At this point we do not use a bfd_reloc_code_real_type for
|
At this point we do not use a bfd_reloc_code_real_type for
|
operands residing in the insn, but instead just use the
|
operands residing in the insn, but instead just use the
|
operand index. This lets us easily handle fixups for any
|
operand index. This lets us easily handle fixups for any
|
operand type. We pick a BFD reloc type in md_apply_fix. */
|
operand type. We pick a BFD reloc type in md_apply_fix. */
|
|
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fixS *
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fixS *
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gas_cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp)
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gas_cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp)
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fragS * frag;
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fragS * frag;
|
int where;
|
int where;
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const CGEN_INSN * insn;
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const CGEN_INSN * insn;
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int length;
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int length;
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const CGEN_OPERAND * operand;
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const CGEN_OPERAND * operand;
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int opinfo;
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int opinfo;
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expressionS * exp;
|
expressionS * exp;
|
{
|
{
|
fixS *fixP;
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fixS *fixP;
|
|
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/* It may seem strange to use operand->attrs and not insn->attrs here,
|
/* It may seem strange to use operand->attrs and not insn->attrs here,
|
but it is the operand that has a pc relative relocation. */
|
but it is the operand that has a pc relative relocation. */
|
fixP = fix_new_exp (frag, where, length / 8, exp,
|
fixP = fix_new_exp (frag, where, length / 8, exp,
|
CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_PCREL_ADDR),
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CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_PCREL_ADDR),
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(bfd_reloc_code_real_type)
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(bfd_reloc_code_real_type)
|
((int) BFD_RELOC_UNUSED
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((int) BFD_RELOC_UNUSED
|
+ (int) operand->type));
|
+ (int) operand->type));
|
fixP->fx_cgen.insn = insn;
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fixP->fx_cgen.insn = insn;
|
fixP->fx_cgen.opinfo = opinfo;
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fixP->fx_cgen.opinfo = opinfo;
|
fixP->fx_cgen.field = NULL;
|
fixP->fx_cgen.field = NULL;
|
fixP->fx_cgen.msb_field_p = 0;
|
fixP->fx_cgen.msb_field_p = 0;
|
|
|
return fixP;
|
return fixP;
|
}
|
}
|
|
|
#ifdef OBJ_COMPLEX_RELC
|
#ifdef OBJ_COMPLEX_RELC
|
static symbolS *
|
static symbolS *
|
expr_build_binary (operatorT op, symbolS * s1, symbolS * s2)
|
expr_build_binary (operatorT op, symbolS * s1, symbolS * s2)
|
{
|
{
|
expressionS e;
|
expressionS e;
|
|
|
e.X_op = op;
|
e.X_op = op;
|
e.X_add_symbol = s1;
|
e.X_add_symbol = s1;
|
e.X_op_symbol = s2;
|
e.X_op_symbol = s2;
|
e.X_add_number = 0;
|
e.X_add_number = 0;
|
return make_expr_symbol (& e);
|
return make_expr_symbol (& e);
|
}
|
}
|
#endif
|
#endif
|
|
|
/* Used for communication between the next two procedures. */
|
/* Used for communication between the next two procedures. */
|
static jmp_buf expr_jmp_buf;
|
static jmp_buf expr_jmp_buf;
|
static int expr_jmp_buf_p;
|
static int expr_jmp_buf_p;
|
|
|
/* Callback for cgen interface. Parse the expression at *STRP.
|
/* Callback for cgen interface. Parse the expression at *STRP.
|
The result is an error message or NULL for success (in which case
|
The result is an error message or NULL for success (in which case
|
*STRP is advanced past the parsed text).
|
*STRP is advanced past the parsed text).
|
WANT is an indication of what the caller is looking for.
|
WANT is an indication of what the caller is looking for.
|
If WANT == CGEN_ASM_PARSE_INIT the caller is beginning to try to match
|
If WANT == CGEN_ASM_PARSE_INIT the caller is beginning to try to match
|
a table entry with the insn, reset the queued fixups counter.
|
a table entry with the insn, reset the queued fixups counter.
|
An enum cgen_parse_operand_result is stored in RESULTP.
|
An enum cgen_parse_operand_result is stored in RESULTP.
|
OPINDEX is the operand's table entry index.
|
OPINDEX is the operand's table entry index.
|
OPINFO is something the caller chooses to help in reloc determination.
|
OPINFO is something the caller chooses to help in reloc determination.
|
The resulting value is stored in VALUEP. */
|
The resulting value is stored in VALUEP. */
|
|
|
const char *
|
const char *
|
gas_cgen_parse_operand (cd, want, strP, opindex, opinfo, resultP, valueP)
|
gas_cgen_parse_operand (cd, want, strP, opindex, opinfo, resultP, valueP)
|
|
|
#ifdef OBJ_COMPLEX_RELC
|
#ifdef OBJ_COMPLEX_RELC
|
CGEN_CPU_DESC cd;
|
CGEN_CPU_DESC cd;
|
#else
|
#else
|
CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
|
CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
|
#endif
|
#endif
|
enum cgen_parse_operand_type want;
|
enum cgen_parse_operand_type want;
|
const char **strP;
|
const char **strP;
|
int opindex;
|
int opindex;
|
int opinfo;
|
int opinfo;
|
enum cgen_parse_operand_result *resultP;
|
enum cgen_parse_operand_result *resultP;
|
bfd_vma *valueP;
|
bfd_vma *valueP;
|
{
|
{
|
#ifdef __STDC__
|
#ifdef __STDC__
|
/* These are volatile to survive the setjmp. */
|
/* These are volatile to survive the setjmp. */
|
char * volatile hold;
|
char * volatile hold;
|
enum cgen_parse_operand_result * volatile resultP_1;
|
enum cgen_parse_operand_result * volatile resultP_1;
|
volatile int opinfo_1;
|
volatile int opinfo_1;
|
#else
|
#else
|
static char *hold;
|
static char *hold;
|
static enum cgen_parse_operand_result *resultP_1;
|
static enum cgen_parse_operand_result *resultP_1;
|
int opinfo_1;
|
int opinfo_1;
|
#endif
|
#endif
|
const char *errmsg;
|
const char *errmsg;
|
expressionS exp;
|
expressionS exp;
|
|
|
#ifdef OBJ_COMPLEX_RELC
|
#ifdef OBJ_COMPLEX_RELC
|
volatile int signed_p = 0;
|
volatile int signed_p = 0;
|
symbolS * stmp = NULL;
|
symbolS * stmp = NULL;
|
bfd_reloc_code_real_type reloc_type;
|
bfd_reloc_code_real_type reloc_type;
|
const CGEN_OPERAND * operand;
|
const CGEN_OPERAND * operand;
|
fixS dummy_fixup;
|
fixS dummy_fixup;
|
#endif
|
#endif
|
if (want == CGEN_PARSE_OPERAND_INIT)
|
if (want == CGEN_PARSE_OPERAND_INIT)
|
{
|
{
|
gas_cgen_init_parse ();
|
gas_cgen_init_parse ();
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
resultP_1 = resultP;
|
resultP_1 = resultP;
|
hold = input_line_pointer;
|
hold = input_line_pointer;
|
input_line_pointer = (char *) *strP;
|
input_line_pointer = (char *) *strP;
|
opinfo_1 = opinfo;
|
opinfo_1 = opinfo;
|
|
|
/* We rely on md_operand to longjmp back to us.
|
/* We rely on md_operand to longjmp back to us.
|
This is done via gas_cgen_md_operand. */
|
This is done via gas_cgen_md_operand. */
|
if (setjmp (expr_jmp_buf) != 0)
|
if (setjmp (expr_jmp_buf) != 0)
|
{
|
{
|
expr_jmp_buf_p = 0;
|
expr_jmp_buf_p = 0;
|
input_line_pointer = (char *) hold;
|
input_line_pointer = (char *) hold;
|
*resultP_1 = CGEN_PARSE_OPERAND_RESULT_ERROR;
|
*resultP_1 = CGEN_PARSE_OPERAND_RESULT_ERROR;
|
return _("illegal operand");
|
return _("illegal operand");
|
}
|
}
|
|
|
expr_jmp_buf_p = 1;
|
expr_jmp_buf_p = 1;
|
expression (&exp);
|
expression (&exp);
|
expr_jmp_buf_p = 0;
|
expr_jmp_buf_p = 0;
|
errmsg = NULL;
|
errmsg = NULL;
|
|
|
*strP = input_line_pointer;
|
*strP = input_line_pointer;
|
input_line_pointer = hold;
|
input_line_pointer = hold;
|
|
|
#ifdef TC_CGEN_PARSE_FIX_EXP
|
#ifdef TC_CGEN_PARSE_FIX_EXP
|
opinfo_1 = TC_CGEN_PARSE_FIX_EXP (opinfo_1, & exp);
|
opinfo_1 = TC_CGEN_PARSE_FIX_EXP (opinfo_1, & exp);
|
#endif
|
#endif
|
|
|
/* FIXME: Need to check `want'. */
|
/* FIXME: Need to check `want'. */
|
|
|
switch (exp.X_op)
|
switch (exp.X_op)
|
{
|
{
|
case O_illegal:
|
case O_illegal:
|
errmsg = _("illegal operand");
|
errmsg = _("illegal operand");
|
*resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
|
*resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
|
break;
|
break;
|
case O_absent:
|
case O_absent:
|
errmsg = _("missing operand");
|
errmsg = _("missing operand");
|
*resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
|
*resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
|
break;
|
break;
|
case O_constant:
|
case O_constant:
|
if (want == CGEN_PARSE_OPERAND_SYMBOLIC)
|
if (want == CGEN_PARSE_OPERAND_SYMBOLIC)
|
goto de_fault;
|
goto de_fault;
|
*valueP = exp.X_add_number;
|
*valueP = exp.X_add_number;
|
*resultP = CGEN_PARSE_OPERAND_RESULT_NUMBER;
|
*resultP = CGEN_PARSE_OPERAND_RESULT_NUMBER;
|
break;
|
break;
|
case O_register:
|
case O_register:
|
*valueP = exp.X_add_number;
|
*valueP = exp.X_add_number;
|
*resultP = CGEN_PARSE_OPERAND_RESULT_REGISTER;
|
*resultP = CGEN_PARSE_OPERAND_RESULT_REGISTER;
|
break;
|
break;
|
de_fault:
|
de_fault:
|
default:
|
default:
|
#ifdef OBJ_COMPLEX_RELC
|
#ifdef OBJ_COMPLEX_RELC
|
/* Look up operand, check to see if there's an obvious
|
/* Look up operand, check to see if there's an obvious
|
overflow (this helps disambiguate some insn parses). */
|
overflow (this helps disambiguate some insn parses). */
|
operand = cgen_operand_lookup_by_num (cd, opindex);
|
operand = cgen_operand_lookup_by_num (cd, opindex);
|
errmsg = weak_operand_overflow_check (& exp, operand);
|
errmsg = weak_operand_overflow_check (& exp, operand);
|
|
|
if (! errmsg)
|
if (! errmsg)
|
{
|
{
|
/* Fragment the expression as necessary, and queue a reloc. */
|
/* Fragment the expression as necessary, and queue a reloc. */
|
memset (& dummy_fixup, 0, sizeof (fixS));
|
memset (& dummy_fixup, 0, sizeof (fixS));
|
|
|
reloc_type = md_cgen_lookup_reloc (0, operand, & dummy_fixup);
|
reloc_type = md_cgen_lookup_reloc (0, operand, & dummy_fixup);
|
|
|
if (exp.X_op == O_symbol
|
if (exp.X_op == O_symbol
|
&& reloc_type == BFD_RELOC_RELC
|
&& reloc_type == BFD_RELOC_RELC
|
&& exp.X_add_symbol->sy_value.X_op == O_constant
|
&& exp.X_add_symbol->sy_value.X_op == O_constant
|
&& (!exp.X_add_symbol->bsym
|
&& (!exp.X_add_symbol->bsym
|
|| (exp.X_add_symbol->bsym->section != expr_section
|
|| (exp.X_add_symbol->bsym->section != expr_section
|
&& exp.X_add_symbol->bsym->section != absolute_section
|
&& exp.X_add_symbol->bsym->section != absolute_section
|
&& exp.X_add_symbol->bsym->section != undefined_section)))
|
&& exp.X_add_symbol->bsym->section != undefined_section)))
|
{
|
{
|
/* Local labels will have been (eagerly) turned into constants
|
/* Local labels will have been (eagerly) turned into constants
|
by now, due to the inappropriately deep insight of the
|
by now, due to the inappropriately deep insight of the
|
expression parser. Unfortunately make_expr_symbol
|
expression parser. Unfortunately make_expr_symbol
|
prematurely dives into the symbol evaluator, and in this
|
prematurely dives into the symbol evaluator, and in this
|
case it gets a bad answer, so we manually create the
|
case it gets a bad answer, so we manually create the
|
expression symbol we want here. */
|
expression symbol we want here. */
|
stmp = symbol_create (FAKE_LABEL_NAME, expr_section, 0,
|
stmp = symbol_create (FAKE_LABEL_NAME, expr_section, 0,
|
& zero_address_frag);
|
& zero_address_frag);
|
symbol_set_value_expression (stmp, & exp);
|
symbol_set_value_expression (stmp, & exp);
|
}
|
}
|
else
|
else
|
stmp = make_expr_symbol (& exp);
|
stmp = make_expr_symbol (& exp);
|
|
|
/* If this is a pc-relative RELC operand, we
|
/* If this is a pc-relative RELC operand, we
|
need to subtract "." from the expression. */
|
need to subtract "." from the expression. */
|
if (reloc_type == BFD_RELOC_RELC
|
if (reloc_type == BFD_RELOC_RELC
|
&& CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_PCREL_ADDR))
|
&& CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_PCREL_ADDR))
|
stmp = expr_build_binary (O_subtract, stmp, expr_build_dot ());
|
stmp = expr_build_binary (O_subtract, stmp, expr_build_dot ());
|
|
|
/* FIXME: this is not a perfect heuristic for figuring out
|
/* FIXME: this is not a perfect heuristic for figuring out
|
whether an operand is signed: it only works when the operand
|
whether an operand is signed: it only works when the operand
|
is an immediate. it's not terribly likely that any other
|
is an immediate. it's not terribly likely that any other
|
values will be signed relocs, but it's possible. */
|
values will be signed relocs, but it's possible. */
|
if (operand && (operand->hw_type == HW_H_SINT))
|
if (operand && (operand->hw_type == HW_H_SINT))
|
signed_p = 1;
|
signed_p = 1;
|
|
|
if (stmp->bsym && (stmp->bsym->section == expr_section))
|
if (stmp->bsym && (stmp->bsym->section == expr_section))
|
{
|
{
|
if (signed_p)
|
if (signed_p)
|
stmp->bsym->flags |= BSF_SRELC;
|
stmp->bsym->flags |= BSF_SRELC;
|
else
|
else
|
stmp->bsym->flags |= BSF_RELC;
|
stmp->bsym->flags |= BSF_RELC;
|
}
|
}
|
|
|
/* Now package it all up for the fixup emitter. */
|
/* Now package it all up for the fixup emitter. */
|
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;
|
|
|
/* Re-init rightshift quantity, just in case. */
|
/* Re-init rightshift quantity, just in case. */
|
rightshift = operand->length;
|
rightshift = operand->length;
|
queue_fixup_recursively (opindex, opinfo_1, & exp,
|
queue_fixup_recursively (opindex, opinfo_1, & exp,
|
(reloc_type == BFD_RELOC_RELC) ?
|
(reloc_type == BFD_RELOC_RELC) ?
|
& (operand->index_fields) : 0,
|
& (operand->index_fields) : 0,
|
signed_p, -1);
|
signed_p, -1);
|
}
|
}
|
* resultP = errmsg
|
* resultP = errmsg
|
? CGEN_PARSE_OPERAND_RESULT_ERROR
|
? CGEN_PARSE_OPERAND_RESULT_ERROR
|
: CGEN_PARSE_OPERAND_RESULT_QUEUED;
|
: CGEN_PARSE_OPERAND_RESULT_QUEUED;
|
*valueP = 0;
|
*valueP = 0;
|
#else
|
#else
|
queue_fixup (opindex, opinfo_1, &exp);
|
queue_fixup (opindex, opinfo_1, &exp);
|
*valueP = 0;
|
*valueP = 0;
|
*resultP = CGEN_PARSE_OPERAND_RESULT_QUEUED;
|
*resultP = CGEN_PARSE_OPERAND_RESULT_QUEUED;
|
#endif
|
#endif
|
break;
|
break;
|
}
|
}
|
|
|
return errmsg;
|
return errmsg;
|
}
|
}
|
|
|
/* md_operand handler to catch unrecognized expressions and halt the
|
/* md_operand handler to catch unrecognized expressions and halt the
|
parsing process so the next entry can be tried.
|
parsing process so the next entry can be tried.
|
|
|
??? This could be done differently by adding code to `expression'. */
|
??? This could be done differently by adding code to `expression'. */
|
|
|
void
|
void
|
gas_cgen_md_operand (expressionP)
|
gas_cgen_md_operand (expressionP)
|
expressionS *expressionP ATTRIBUTE_UNUSED;
|
expressionS *expressionP ATTRIBUTE_UNUSED;
|
{
|
{
|
/* Don't longjmp if we're not called from within cgen_parse_operand(). */
|
/* Don't longjmp if we're not called from within cgen_parse_operand(). */
|
if (expr_jmp_buf_p)
|
if (expr_jmp_buf_p)
|
longjmp (expr_jmp_buf, 1);
|
longjmp (expr_jmp_buf, 1);
|
}
|
}
|
|
|
/* Finish assembling instruction INSN.
|
/* Finish assembling instruction INSN.
|
BUF contains what we've built up so far.
|
BUF contains what we've built up so far.
|
LENGTH is the size of the insn in bits.
|
LENGTH is the size of the insn in bits.
|
RELAX_P is non-zero if relaxable insns should be emitted as such.
|
RELAX_P is non-zero if relaxable insns should be emitted as such.
|
Otherwise they're emitted in non-relaxable forms.
|
Otherwise they're emitted in non-relaxable forms.
|
The "result" is stored in RESULT if non-NULL. */
|
The "result" is stored in RESULT if non-NULL. */
|
|
|
void
|
void
|
gas_cgen_finish_insn (insn, buf, length, relax_p, result)
|
gas_cgen_finish_insn (insn, buf, length, relax_p, result)
|
const CGEN_INSN *insn;
|
const CGEN_INSN *insn;
|
CGEN_INSN_BYTES_PTR buf;
|
CGEN_INSN_BYTES_PTR buf;
|
unsigned int length;
|
unsigned int length;
|
int relax_p;
|
int relax_p;
|
finished_insnS *result;
|
finished_insnS *result;
|
{
|
{
|
int i;
|
int i;
|
int relax_operand;
|
int relax_operand;
|
char *f;
|
char *f;
|
unsigned int byte_len = length / 8;
|
unsigned int byte_len = length / 8;
|
|
|
/* ??? Target foo issues various warnings here, so one might want to provide
|
/* ??? Target foo issues various warnings here, so one might want to provide
|
a hook here. However, our caller is defined in tc-foo.c so there
|
a hook here. However, our caller is defined in tc-foo.c so there
|
shouldn't be a need for a hook. */
|
shouldn't be a need for a hook. */
|
|
|
/* Write out the instruction.
|
/* Write out the instruction.
|
It is important to fetch enough space in one call to `frag_more'.
|
It is important to fetch enough space in one call to `frag_more'.
|
We use (f - frag_now->fr_literal) to compute where we are and we
|
We use (f - frag_now->fr_literal) to compute where we are and we
|
don't want frag_now to change between calls.
|
don't want frag_now to change between calls.
|
|
|
Relaxable instructions: We need to ensure we allocate enough
|
Relaxable instructions: We need to ensure we allocate enough
|
space for the largest insn. */
|
space for the largest insn. */
|
|
|
if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED))
|
if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED))
|
/* These currently shouldn't get here. */
|
/* These currently shouldn't get here. */
|
abort ();
|
abort ();
|
|
|
/* Is there a relaxable insn with the relaxable operand needing a fixup? */
|
/* Is there a relaxable insn with the relaxable operand needing a fixup? */
|
|
|
relax_operand = -1;
|
relax_operand = -1;
|
if (relax_p && CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXABLE))
|
if (relax_p && CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXABLE))
|
{
|
{
|
/* Scan the fixups for the operand affected by relaxing
|
/* Scan the fixups for the operand affected by relaxing
|
(i.e. the branch address). */
|
(i.e. the branch address). */
|
|
|
for (i = 0; i < num_fixups; ++i)
|
for (i = 0; i < num_fixups; ++i)
|
{
|
{
|
if (CGEN_OPERAND_ATTR_VALUE (cgen_operand_lookup_by_num (gas_cgen_cpu_desc, fixups[i].opindex),
|
if (CGEN_OPERAND_ATTR_VALUE (cgen_operand_lookup_by_num (gas_cgen_cpu_desc, fixups[i].opindex),
|
CGEN_OPERAND_RELAX))
|
CGEN_OPERAND_RELAX))
|
{
|
{
|
relax_operand = i;
|
relax_operand = i;
|
break;
|
break;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
if (relax_operand != -1)
|
if (relax_operand != -1)
|
{
|
{
|
int max_len;
|
int max_len;
|
fragS *old_frag;
|
fragS *old_frag;
|
expressionS *exp;
|
expressionS *exp;
|
symbolS *sym;
|
symbolS *sym;
|
offsetT off;
|
offsetT off;
|
|
|
#ifdef TC_CGEN_MAX_RELAX
|
#ifdef TC_CGEN_MAX_RELAX
|
max_len = TC_CGEN_MAX_RELAX (insn, byte_len);
|
max_len = TC_CGEN_MAX_RELAX (insn, byte_len);
|
#else
|
#else
|
max_len = CGEN_MAX_INSN_SIZE;
|
max_len = CGEN_MAX_INSN_SIZE;
|
#endif
|
#endif
|
/* Ensure variable part and fixed part are in same fragment. */
|
/* Ensure variable part and fixed part are in same fragment. */
|
/* FIXME: Having to do this seems like a hack. */
|
/* FIXME: Having to do this seems like a hack. */
|
frag_grow (max_len);
|
frag_grow (max_len);
|
|
|
/* Allocate space for the fixed part. */
|
/* Allocate space for the fixed part. */
|
f = frag_more (byte_len);
|
f = frag_more (byte_len);
|
|
|
/* Create a relaxable fragment for this instruction. */
|
/* Create a relaxable fragment for this instruction. */
|
old_frag = frag_now;
|
old_frag = frag_now;
|
|
|
exp = &fixups[relax_operand].exp;
|
exp = &fixups[relax_operand].exp;
|
sym = exp->X_add_symbol;
|
sym = exp->X_add_symbol;
|
off = exp->X_add_number;
|
off = exp->X_add_number;
|
if (exp->X_op != O_constant && exp->X_op != O_symbol)
|
if (exp->X_op != O_constant && exp->X_op != O_symbol)
|
{
|
{
|
/* Handle complex expressions. */
|
/* Handle complex expressions. */
|
sym = make_expr_symbol (exp);
|
sym = make_expr_symbol (exp);
|
off = 0;
|
off = 0;
|
}
|
}
|
|
|
frag_var (rs_machine_dependent,
|
frag_var (rs_machine_dependent,
|
max_len - byte_len /* max chars */,
|
max_len - byte_len /* max chars */,
|
0 /* variable part already allocated */,
|
0 /* variable part already allocated */,
|
/* FIXME: When we machine generate the relax table,
|
/* FIXME: When we machine generate the relax table,
|
machine generate a macro to compute subtype. */
|
machine generate a macro to compute subtype. */
|
1 /* subtype */,
|
1 /* subtype */,
|
sym,
|
sym,
|
off,
|
off,
|
f);
|
f);
|
|
|
/* Record the operand number with the fragment so md_convert_frag
|
/* Record the operand number with the fragment so md_convert_frag
|
can use gas_cgen_md_record_fixup to record the appropriate reloc. */
|
can use gas_cgen_md_record_fixup to record the appropriate reloc. */
|
old_frag->fr_cgen.insn = insn;
|
old_frag->fr_cgen.insn = insn;
|
old_frag->fr_cgen.opindex = fixups[relax_operand].opindex;
|
old_frag->fr_cgen.opindex = fixups[relax_operand].opindex;
|
old_frag->fr_cgen.opinfo = fixups[relax_operand].opinfo;
|
old_frag->fr_cgen.opinfo = fixups[relax_operand].opinfo;
|
if (result)
|
if (result)
|
result->frag = old_frag;
|
result->frag = old_frag;
|
}
|
}
|
else
|
else
|
{
|
{
|
f = frag_more (byte_len);
|
f = frag_more (byte_len);
|
if (result)
|
if (result)
|
result->frag = frag_now;
|
result->frag = frag_now;
|
}
|
}
|
|
|
/* If we're recording insns as numbers (rather than a string of bytes),
|
/* If we're recording insns as numbers (rather than a string of bytes),
|
target byte order handling is deferred until now. */
|
target byte order handling is deferred until now. */
|
#if CGEN_INT_INSN_P
|
#if CGEN_INT_INSN_P
|
cgen_put_insn_value (gas_cgen_cpu_desc, (unsigned char *) f, length, *buf);
|
cgen_put_insn_value (gas_cgen_cpu_desc, (unsigned char *) f, length, *buf);
|
#else
|
#else
|
memcpy (f, buf, byte_len);
|
memcpy (f, buf, byte_len);
|
#endif
|
#endif
|
|
|
/* Emit DWARF2 debugging information. */
|
/* Emit DWARF2 debugging information. */
|
dwarf2_emit_insn (byte_len);
|
dwarf2_emit_insn (byte_len);
|
|
|
/* Create any fixups. */
|
/* Create any fixups. */
|
for (i = 0; i < num_fixups; ++i)
|
for (i = 0; i < num_fixups; ++i)
|
{
|
{
|
fixS *fixP;
|
fixS *fixP;
|
const CGEN_OPERAND *operand =
|
const CGEN_OPERAND *operand =
|
cgen_operand_lookup_by_num (gas_cgen_cpu_desc, fixups[i].opindex);
|
cgen_operand_lookup_by_num (gas_cgen_cpu_desc, fixups[i].opindex);
|
|
|
/* Don't create fixups for these. That's done during relaxation.
|
/* Don't create fixups for these. That's done during relaxation.
|
We don't need to test for CGEN_INSN_RELAXED as they can't get here
|
We don't need to test for CGEN_INSN_RELAXED as they can't get here
|
(see above). */
|
(see above). */
|
if (relax_p
|
if (relax_p
|
&& CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXABLE)
|
&& CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXABLE)
|
&& CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_RELAX))
|
&& CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_RELAX))
|
continue;
|
continue;
|
|
|
#ifndef md_cgen_record_fixup_exp
|
#ifndef md_cgen_record_fixup_exp
|
#define md_cgen_record_fixup_exp gas_cgen_record_fixup_exp
|
#define md_cgen_record_fixup_exp gas_cgen_record_fixup_exp
|
#endif
|
#endif
|
|
|
fixP = md_cgen_record_fixup_exp (frag_now, f - frag_now->fr_literal,
|
fixP = md_cgen_record_fixup_exp (frag_now, f - frag_now->fr_literal,
|
insn, length, operand,
|
insn, length, operand,
|
fixups[i].opinfo,
|
fixups[i].opinfo,
|
&fixups[i].exp);
|
&fixups[i].exp);
|
fixP->fx_cgen.field = fixups[i].field;
|
fixP->fx_cgen.field = fixups[i].field;
|
fixP->fx_cgen.msb_field_p = fixups[i].msb_field_p;
|
fixP->fx_cgen.msb_field_p = fixups[i].msb_field_p;
|
if (result)
|
if (result)
|
result->fixups[i] = fixP;
|
result->fixups[i] = fixP;
|
}
|
}
|
|
|
if (result)
|
if (result)
|
{
|
{
|
result->num_fixups = num_fixups;
|
result->num_fixups = num_fixups;
|
result->addr = f;
|
result->addr = f;
|
}
|
}
|
}
|
}
|
|
|
#ifdef OBJ_COMPLEX_RELC
|
#ifdef OBJ_COMPLEX_RELC
|
/* Queue many fixups, recursively. If the field is a multi-ifield,
|
/* Queue many fixups, recursively. If the field is a multi-ifield,
|
repeatedly queue its sub-parts, right shifted to fit into the field (we
|
repeatedly queue its sub-parts, right shifted to fit into the field (we
|
assume here multi-fields represent a left-to-right, MSB0-LSB0
|
assume here multi-fields represent a left-to-right, MSB0-LSB0
|
reading). */
|
reading). */
|
|
|
static void
|
static void
|
queue_fixup_recursively (const int opindex,
|
queue_fixup_recursively (const int opindex,
|
const int opinfo,
|
const int opinfo,
|
expressionS * expP,
|
expressionS * expP,
|
const CGEN_MAYBE_MULTI_IFLD * field,
|
const CGEN_MAYBE_MULTI_IFLD * field,
|
const int signed_p,
|
const int signed_p,
|
const int part_of_multi)
|
const int part_of_multi)
|
{
|
{
|
if (field && field->count)
|
if (field && field->count)
|
{
|
{
|
int i;
|
int i;
|
|
|
for (i = 0; i < field->count; ++ i)
|
for (i = 0; i < field->count; ++ i)
|
queue_fixup_recursively (opindex, opinfo, expP,
|
queue_fixup_recursively (opindex, opinfo, expP,
|
& (field->val.multi[i]), signed_p, i);
|
& (field->val.multi[i]), signed_p, i);
|
}
|
}
|
else
|
else
|
{
|
{
|
expressionS * new_exp = expP;
|
expressionS * new_exp = expP;
|
|
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printf ("queueing fixup for field %s\n",
|
printf ("queueing fixup for field %s\n",
|
(field ? field->val.leaf->name : "??"));
|
(field ? field->val.leaf->name : "??"));
|
print_symbol_value (expP->X_add_symbol);
|
print_symbol_value (expP->X_add_symbol);
|
#endif
|
#endif
|
if (field && part_of_multi != -1)
|
if (field && part_of_multi != -1)
|
{
|
{
|
rightshift -= field->val.leaf->length;
|
rightshift -= field->val.leaf->length;
|
|
|
/* Shift reloc value by number of bits remaining after this
|
/* Shift reloc value by number of bits remaining after this
|
field. */
|
field. */
|
if (rightshift)
|
if (rightshift)
|
new_exp = make_right_shifted_expr (expP, rightshift, signed_p);
|
new_exp = make_right_shifted_expr (expP, rightshift, signed_p);
|
}
|
}
|
|
|
/* Truncate reloc values to length, *after* leftmost one. */
|
/* Truncate reloc values to length, *after* leftmost one. */
|
fixups[num_fixups].msb_field_p = (part_of_multi <= 0);
|
fixups[num_fixups].msb_field_p = (part_of_multi <= 0);
|
fixups[num_fixups].field = (CGEN_MAYBE_MULTI_IFLD *) field;
|
fixups[num_fixups].field = (CGEN_MAYBE_MULTI_IFLD *) field;
|
|
|
queue_fixup (opindex, opinfo, new_exp);
|
queue_fixup (opindex, opinfo, new_exp);
|
}
|
}
|
}
|
}
|
|
|
/* Encode the self-describing RELC reloc format's addend. */
|
/* Encode the self-describing RELC reloc format's addend. */
|
|
|
static unsigned long
|
static unsigned long
|
gas_cgen_encode_addend (const unsigned long start, /* in bits */
|
gas_cgen_encode_addend (const unsigned long start, /* in bits */
|
const unsigned long len, /* in bits */
|
const unsigned long len, /* in bits */
|
const unsigned long oplen, /* in bits */
|
const unsigned long oplen, /* in bits */
|
const unsigned long wordsz, /* in bytes */
|
const unsigned long wordsz, /* in bytes */
|
const unsigned long chunksz, /* in bytes */
|
const unsigned long chunksz, /* in bytes */
|
const unsigned long signed_p,
|
const unsigned long signed_p,
|
const unsigned long trunc_p)
|
const unsigned long trunc_p)
|
{
|
{
|
unsigned long res = 0L;
|
unsigned long res = 0L;
|
|
|
res |= start & 0x3F;
|
res |= start & 0x3F;
|
res |= (oplen & 0x3F) << 6;
|
res |= (oplen & 0x3F) << 6;
|
res |= (len & 0x3F) << 12;
|
res |= (len & 0x3F) << 12;
|
res |= (wordsz & 0xF) << 18;
|
res |= (wordsz & 0xF) << 18;
|
res |= (chunksz & 0xF) << 22;
|
res |= (chunksz & 0xF) << 22;
|
res |= (CGEN_INSN_LSB0_P ? 1 : 0) << 27;
|
res |= (CGEN_INSN_LSB0_P ? 1 : 0) << 27;
|
res |= signed_p << 28;
|
res |= signed_p << 28;
|
res |= trunc_p << 29;
|
res |= trunc_p << 29;
|
|
|
return res;
|
return res;
|
}
|
}
|
|
|
/* Purpose: make a weak check that the expression doesn't overflow the
|
/* Purpose: make a weak check that the expression doesn't overflow the
|
operand it's to be inserted into.
|
operand it's to be inserted into.
|
|
|
Rationale: some insns used to use %operators to disambiguate during a
|
Rationale: some insns used to use %operators to disambiguate during a
|
parse. when these %operators are translated to expressions by the macro
|
parse. when these %operators are translated to expressions by the macro
|
expander, the ambiguity returns. we attempt to disambiguate by field
|
expander, the ambiguity returns. we attempt to disambiguate by field
|
size.
|
size.
|
|
|
Method: check to see if the expression's top node is an O_and operator,
|
Method: check to see if the expression's top node is an O_and operator,
|
and the mask is larger than the operand length. This would be an
|
and the mask is larger than the operand length. This would be an
|
overflow, so signal it by returning an error string. Any other case is
|
overflow, so signal it by returning an error string. Any other case is
|
ambiguous, so we assume it's OK and return NULL. */
|
ambiguous, so we assume it's OK and return NULL. */
|
|
|
static char *
|
static char *
|
weak_operand_overflow_check (const expressionS * exp,
|
weak_operand_overflow_check (const expressionS * exp,
|
const CGEN_OPERAND * operand)
|
const CGEN_OPERAND * operand)
|
{
|
{
|
const unsigned long len = operand->length;
|
const unsigned long len = operand->length;
|
unsigned long mask;
|
unsigned long mask;
|
unsigned long opmask = (((1L << (len - 1)) - 1) << 1) | 1;
|
unsigned long opmask = (((1L << (len - 1)) - 1) << 1) | 1;
|
|
|
if (!exp)
|
if (!exp)
|
return NULL;
|
return NULL;
|
|
|
if (exp->X_op != O_bit_and)
|
if (exp->X_op != O_bit_and)
|
{
|
{
|
/* Check for implicit overflow flag. */
|
/* Check for implicit overflow flag. */
|
if (CGEN_OPERAND_ATTR_VALUE
|
if (CGEN_OPERAND_ATTR_VALUE
|
(operand, CGEN_OPERAND_RELOC_IMPLIES_OVERFLOW))
|
(operand, CGEN_OPERAND_RELOC_IMPLIES_OVERFLOW))
|
return _("a reloc on this operand implies an overflow");
|
return _("a reloc on this operand implies an overflow");
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
mask = exp->X_add_number;
|
mask = exp->X_add_number;
|
|
|
if (exp->X_add_symbol
|
if (exp->X_add_symbol
|
&& exp->X_add_symbol->sy_value.X_op == O_constant)
|
&& exp->X_add_symbol->sy_value.X_op == O_constant)
|
mask |= exp->X_add_symbol->sy_value.X_add_number;
|
mask |= exp->X_add_symbol->sy_value.X_add_number;
|
|
|
if (exp->X_op_symbol
|
if (exp->X_op_symbol
|
&& exp->X_op_symbol->sy_value.X_op == O_constant)
|
&& exp->X_op_symbol->sy_value.X_op == O_constant)
|
mask |= exp->X_op_symbol->sy_value.X_add_number;
|
mask |= exp->X_op_symbol->sy_value.X_add_number;
|
|
|
/* Want to know if mask covers more bits than opmask.
|
/* Want to know if mask covers more bits than opmask.
|
this is the same as asking if mask has any bits not in opmask,
|
this is the same as asking if mask has any bits not in opmask,
|
or whether (mask & ~opmask) is nonzero. */
|
or whether (mask & ~opmask) is nonzero. */
|
if (mask && (mask & ~opmask))
|
if (mask && (mask & ~opmask))
|
{
|
{
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printf ("overflow: (mask = %8.8x, ~opmask = %8.8x, AND = %8.8x)\n",
|
printf ("overflow: (mask = %8.8x, ~opmask = %8.8x, AND = %8.8x)\n",
|
mask, ~opmask, (mask & ~opmask));
|
mask, ~opmask, (mask & ~opmask));
|
#endif
|
#endif
|
return _("operand mask overflow");
|
return _("operand mask overflow");
|
}
|
}
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
static expressionS *
|
static expressionS *
|
make_right_shifted_expr (expressionS * exp,
|
make_right_shifted_expr (expressionS * exp,
|
const int amount,
|
const int amount,
|
const int signed_p)
|
const int signed_p)
|
{
|
{
|
symbolS * stmp = 0;
|
symbolS * stmp = 0;
|
expressionS * new_exp;
|
expressionS * new_exp;
|
|
|
stmp = expr_build_binary (O_right_shift,
|
stmp = expr_build_binary (O_right_shift,
|
make_expr_symbol (exp),
|
make_expr_symbol (exp),
|
expr_build_uconstant (amount));
|
expr_build_uconstant (amount));
|
|
|
if (signed_p)
|
if (signed_p)
|
stmp->bsym->flags |= BSF_SRELC;
|
stmp->bsym->flags |= BSF_SRELC;
|
else
|
else
|
stmp->bsym->flags |= BSF_RELC;
|
stmp->bsym->flags |= BSF_RELC;
|
|
|
/* Then wrap that in a "symbol expr" for good measure. */
|
/* Then wrap that in a "symbol expr" for good measure. */
|
new_exp = xmalloc (sizeof (expressionS));
|
new_exp = xmalloc (sizeof (expressionS));
|
memset (new_exp, 0, sizeof (expressionS));
|
memset (new_exp, 0, sizeof (expressionS));
|
new_exp->X_op = O_symbol;
|
new_exp->X_op = O_symbol;
|
new_exp->X_op_symbol = 0;
|
new_exp->X_op_symbol = 0;
|
new_exp->X_add_symbol = stmp;
|
new_exp->X_add_symbol = stmp;
|
new_exp->X_add_number = 0;
|
new_exp->X_add_number = 0;
|
|
|
return new_exp;
|
return new_exp;
|
}
|
}
|
|
|
#endif
|
#endif
|
|
|
/* Apply a fixup to the object code. This is called for all the
|
/* Apply a fixup to the object code. This is called for all the
|
fixups we generated by the call to fix_new_exp, above. In the call
|
fixups we generated by the call to fix_new_exp, above. In the call
|
above we used a reloc code which was the largest legal reloc code
|
above we used a reloc code which was the largest legal reloc code
|
plus the operand index. Here we undo that to recover the operand
|
plus the operand index. Here we undo that to recover the operand
|
index. At this point all symbol values should be fully resolved,
|
index. At this point all symbol values should be fully resolved,
|
and we attempt to completely resolve the reloc. If we can not do
|
and we attempt to completely resolve the reloc. If we can not do
|
that, we determine the correct reloc code and put it back in the fixup. */
|
that, we determine the correct reloc code and put it back in the fixup. */
|
|
|
/* FIXME: This function handles some of the fixups and bfd_install_relocation
|
/* FIXME: This function handles some of the fixups and bfd_install_relocation
|
handles the rest. bfd_install_relocation (or some other bfd function)
|
handles the rest. bfd_install_relocation (or some other bfd function)
|
should handle them all. */
|
should handle them all. */
|
|
|
void
|
void
|
gas_cgen_md_apply_fix (fixP, valP, seg)
|
gas_cgen_md_apply_fix (fixP, valP, seg)
|
fixS * fixP;
|
fixS * fixP;
|
valueT * valP;
|
valueT * valP;
|
segT seg ATTRIBUTE_UNUSED;
|
segT seg ATTRIBUTE_UNUSED;
|
{
|
{
|
char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
|
char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
|
valueT value = * valP;
|
valueT value = * valP;
|
/* Canonical name, since used a lot. */
|
/* Canonical name, since used a lot. */
|
CGEN_CPU_DESC cd = gas_cgen_cpu_desc;
|
CGEN_CPU_DESC cd = gas_cgen_cpu_desc;
|
|
|
if (fixP->fx_addsy == (symbolS *) NULL)
|
if (fixP->fx_addsy == (symbolS *) NULL)
|
fixP->fx_done = 1;
|
fixP->fx_done = 1;
|
|
|
/* We don't actually support subtracting a symbol. */
|
/* We don't actually support subtracting a symbol. */
|
if (fixP->fx_subsy != (symbolS *) NULL)
|
if (fixP->fx_subsy != (symbolS *) NULL)
|
as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
|
as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
|
|
|
if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
|
if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
|
{
|
{
|
int opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
|
int opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
|
const CGEN_OPERAND *operand = cgen_operand_lookup_by_num (cd, opindex);
|
const CGEN_OPERAND *operand = cgen_operand_lookup_by_num (cd, opindex);
|
const char *errmsg;
|
const char *errmsg;
|
bfd_reloc_code_real_type reloc_type;
|
bfd_reloc_code_real_type reloc_type;
|
CGEN_FIELDS *fields = alloca (CGEN_CPU_SIZEOF_FIELDS (cd));
|
CGEN_FIELDS *fields = alloca (CGEN_CPU_SIZEOF_FIELDS (cd));
|
const CGEN_INSN *insn = fixP->fx_cgen.insn;
|
const CGEN_INSN *insn = fixP->fx_cgen.insn;
|
#ifdef OBJ_COMPLEX_RELC
|
#ifdef OBJ_COMPLEX_RELC
|
int start;
|
int start;
|
int length;
|
int length;
|
int signed_p = 0;
|
int signed_p = 0;
|
|
|
if (fixP->fx_cgen.field)
|
if (fixP->fx_cgen.field)
|
{
|
{
|
/* Use the twisty little pointer path
|
/* Use the twisty little pointer path
|
back to the ifield if it exists. */
|
back to the ifield if it exists. */
|
start = fixP->fx_cgen.field->val.leaf->start;
|
start = fixP->fx_cgen.field->val.leaf->start;
|
length = fixP->fx_cgen.field->val.leaf->length;
|
length = fixP->fx_cgen.field->val.leaf->length;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Or the far less useful operand-size guesstimate. */
|
/* Or the far less useful operand-size guesstimate. */
|
start = operand->start;
|
start = operand->start;
|
length = operand->length;
|
length = operand->length;
|
}
|
}
|
|
|
/* FIXME: this is not a perfect heuristic for figuring out
|
/* FIXME: this is not a perfect heuristic for figuring out
|
whether an operand is signed: it only works when the operand
|
whether an operand is signed: it only works when the operand
|
is an immediate. it's not terribly likely that any other
|
is an immediate. it's not terribly likely that any other
|
values will be signed relocs, but it's possible. */
|
values will be signed relocs, but it's possible. */
|
if (operand && (operand->hw_type == HW_H_SINT))
|
if (operand && (operand->hw_type == HW_H_SINT))
|
signed_p = 1;
|
signed_p = 1;
|
#endif
|
#endif
|
|
|
/* If the reloc has been fully resolved finish the operand here. */
|
/* If the reloc has been fully resolved finish the operand here. */
|
/* FIXME: This duplicates the capabilities of code in BFD. */
|
/* FIXME: This duplicates the capabilities of code in BFD. */
|
if (fixP->fx_done
|
if (fixP->fx_done
|
/* FIXME: If partial_inplace isn't set bfd_install_relocation won't
|
/* FIXME: If partial_inplace isn't set bfd_install_relocation won't
|
finish the job. Testing for pcrel is a temporary hack. */
|
finish the job. Testing for pcrel is a temporary hack. */
|
|| fixP->fx_pcrel)
|
|| fixP->fx_pcrel)
|
{
|
{
|
CGEN_CPU_SET_FIELDS_BITSIZE (cd) (fields, CGEN_INSN_BITSIZE (insn));
|
CGEN_CPU_SET_FIELDS_BITSIZE (cd) (fields, CGEN_INSN_BITSIZE (insn));
|
CGEN_CPU_SET_VMA_OPERAND (cd) (cd, opindex, fields, (bfd_vma) value);
|
CGEN_CPU_SET_VMA_OPERAND (cd) (cd, opindex, fields, (bfd_vma) value);
|
|
|
#if CGEN_INT_INSN_P
|
#if CGEN_INT_INSN_P
|
{
|
{
|
CGEN_INSN_INT insn_value =
|
CGEN_INSN_INT insn_value =
|
cgen_get_insn_value (cd, (unsigned char *) where,
|
cgen_get_insn_value (cd, (unsigned char *) where,
|
CGEN_INSN_BITSIZE (insn));
|
CGEN_INSN_BITSIZE (insn));
|
|
|
/* ??? 0 is passed for `pc'. */
|
/* ??? 0 is passed for `pc'. */
|
errmsg = CGEN_CPU_INSERT_OPERAND (cd) (cd, opindex, fields,
|
errmsg = CGEN_CPU_INSERT_OPERAND (cd) (cd, opindex, fields,
|
&insn_value, (bfd_vma) 0);
|
&insn_value, (bfd_vma) 0);
|
cgen_put_insn_value (cd, (unsigned char *) where,
|
cgen_put_insn_value (cd, (unsigned char *) where,
|
CGEN_INSN_BITSIZE (insn), insn_value);
|
CGEN_INSN_BITSIZE (insn), insn_value);
|
}
|
}
|
#else
|
#else
|
/* ??? 0 is passed for `pc'. */
|
/* ??? 0 is passed for `pc'. */
|
errmsg = CGEN_CPU_INSERT_OPERAND (cd) (cd, opindex, fields,
|
errmsg = CGEN_CPU_INSERT_OPERAND (cd) (cd, opindex, fields,
|
(unsigned char *) where,
|
(unsigned char *) where,
|
(bfd_vma) 0);
|
(bfd_vma) 0);
|
#endif
|
#endif
|
if (errmsg)
|
if (errmsg)
|
as_bad_where (fixP->fx_file, fixP->fx_line, "%s", errmsg);
|
as_bad_where (fixP->fx_file, fixP->fx_line, "%s", errmsg);
|
}
|
}
|
|
|
if (fixP->fx_done)
|
if (fixP->fx_done)
|
return;
|
return;
|
|
|
/* The operand isn't fully resolved. Determine a BFD reloc value
|
/* The operand isn't fully resolved. Determine a BFD reloc value
|
based on the operand information and leave it to
|
based on the operand information and leave it to
|
bfd_install_relocation. Note that this doesn't work when
|
bfd_install_relocation. Note that this doesn't work when
|
partial_inplace == false. */
|
partial_inplace == false. */
|
|
|
reloc_type = md_cgen_lookup_reloc (insn, operand, fixP);
|
reloc_type = md_cgen_lookup_reloc (insn, operand, fixP);
|
#ifdef OBJ_COMPLEX_RELC
|
#ifdef OBJ_COMPLEX_RELC
|
if (reloc_type == BFD_RELOC_RELC)
|
if (reloc_type == BFD_RELOC_RELC)
|
{
|
{
|
/* Change addend to "self-describing" form,
|
/* Change addend to "self-describing" form,
|
for BFD to handle in the linker. */
|
for BFD to handle in the linker. */
|
value = gas_cgen_encode_addend (start, operand->length,
|
value = gas_cgen_encode_addend (start, operand->length,
|
length, fixP->fx_size,
|
length, fixP->fx_size,
|
cd->insn_chunk_bitsize / 8,
|
cd->insn_chunk_bitsize / 8,
|
signed_p,
|
signed_p,
|
! (fixP->fx_cgen.msb_field_p));
|
! (fixP->fx_cgen.msb_field_p));
|
}
|
}
|
#endif
|
#endif
|
|
|
if (reloc_type != BFD_RELOC_NONE)
|
if (reloc_type != BFD_RELOC_NONE)
|
fixP->fx_r_type = reloc_type;
|
fixP->fx_r_type = reloc_type;
|
else
|
else
|
{
|
{
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
_("unresolved expression that must be resolved"));
|
_("unresolved expression that must be resolved"));
|
fixP->fx_done = 1;
|
fixP->fx_done = 1;
|
return;
|
return;
|
}
|
}
|
}
|
}
|
else if (fixP->fx_done)
|
else if (fixP->fx_done)
|
{
|
{
|
/* We're finished with this fixup. Install it because
|
/* We're finished with this fixup. Install it because
|
bfd_install_relocation won't be called to do it. */
|
bfd_install_relocation won't be called to do it. */
|
switch (fixP->fx_r_type)
|
switch (fixP->fx_r_type)
|
{
|
{
|
case BFD_RELOC_8:
|
case BFD_RELOC_8:
|
md_number_to_chars (where, value, 1);
|
md_number_to_chars (where, value, 1);
|
break;
|
break;
|
case BFD_RELOC_16:
|
case BFD_RELOC_16:
|
md_number_to_chars (where, value, 2);
|
md_number_to_chars (where, value, 2);
|
break;
|
break;
|
case BFD_RELOC_32:
|
case BFD_RELOC_32:
|
md_number_to_chars (where, value, 4);
|
md_number_to_chars (where, value, 4);
|
break;
|
break;
|
case BFD_RELOC_64:
|
case BFD_RELOC_64:
|
md_number_to_chars (where, value, 8);
|
md_number_to_chars (where, value, 8);
|
break;
|
break;
|
default:
|
default:
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
_("internal error: can't install fix for reloc type %d (`%s')"),
|
_("internal error: can't install fix for reloc type %d (`%s')"),
|
fixP->fx_r_type, bfd_get_reloc_code_name (fixP->fx_r_type));
|
fixP->fx_r_type, bfd_get_reloc_code_name (fixP->fx_r_type));
|
break;
|
break;
|
}
|
}
|
}
|
}
|
/* else
|
/* else
|
bfd_install_relocation will be called to finish things up. */
|
bfd_install_relocation will be called to finish things up. */
|
|
|
/* Tuck `value' away for use by tc_gen_reloc.
|
/* Tuck `value' away for use by tc_gen_reloc.
|
See the comment describing fx_addnumber in write.h.
|
See the comment describing fx_addnumber in write.h.
|
This field is misnamed (or misused :-). */
|
This field is misnamed (or misused :-). */
|
fixP->fx_addnumber = value;
|
fixP->fx_addnumber = value;
|
}
|
}
|
|
|
|
bfd_reloc_code_real_type
|
|
gas_cgen_pcrel_r_type (bfd_reloc_code_real_type r)
|
|
{
|
|
switch (r)
|
|
{
|
|
case BFD_RELOC_8: r = BFD_RELOC_8_PCREL; break;
|
|
case BFD_RELOC_16: r = BFD_RELOC_16_PCREL; break;
|
|
case BFD_RELOC_24: r = BFD_RELOC_24_PCREL; break;
|
|
case BFD_RELOC_32: r = BFD_RELOC_32_PCREL; break;
|
|
case BFD_RELOC_64: r = BFD_RELOC_64_PCREL; break;
|
|
default:
|
|
break;
|
|
}
|
|
return r;
|
|
}
|
|
|
/* Translate internal representation of relocation info to BFD target format.
|
/* Translate internal representation of relocation info to BFD target format.
|
|
|
FIXME: To what extent can we get all relevant targets to use this? */
|
FIXME: To what extent can we get all relevant targets to use this? */
|
|
|
arelent *
|
arelent *
|
gas_cgen_tc_gen_reloc (section, fixP)
|
gas_cgen_tc_gen_reloc (section, fixP)
|
asection * section ATTRIBUTE_UNUSED;
|
asection * section ATTRIBUTE_UNUSED;
|
fixS * fixP;
|
fixS * fixP;
|
{
|
{
|
|
bfd_reloc_code_real_type r_type = fixP->fx_r_type;
|
arelent *reloc;
|
arelent *reloc;
|
|
|
reloc = (arelent *) xmalloc (sizeof (arelent));
|
reloc = (arelent *) xmalloc (sizeof (arelent));
|
|
|
reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type);
|
#ifdef GAS_CGEN_PCREL_R_TYPE
|
|
if (fixP->fx_pcrel)
|
|
r_type = GAS_CGEN_PCREL_R_TYPE (r_type);
|
|
#endif
|
|
reloc->howto = bfd_reloc_type_lookup (stdoutput, r_type);
|
|
|
if (reloc->howto == (reloc_howto_type *) NULL)
|
if (reloc->howto == (reloc_howto_type *) NULL)
|
{
|
{
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
as_bad_where (fixP->fx_file, fixP->fx_line,
|
_("relocation is not supported"));
|
_("relocation is not supported"));
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
gas_assert (!fixP->fx_pcrel == !reloc->howto->pc_relative);
|
gas_assert (!fixP->fx_pcrel == !reloc->howto->pc_relative);
|
|
|
reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);
|
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);
|
|
|
/* Use fx_offset for these cases. */
|
/* Use fx_offset for these cases. */
|
if (fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY
|
if (fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY
|
|| fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT)
|
|| fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT)
|
reloc->addend = fixP->fx_offset;
|
reloc->addend = fixP->fx_offset;
|
else
|
else
|
reloc->addend = fixP->fx_addnumber;
|
reloc->addend = fixP->fx_addnumber;
|
|
|
reloc->address = fixP->fx_frag->fr_address + fixP->fx_where;
|
reloc->address = fixP->fx_frag->fr_address + fixP->fx_where;
|
return reloc;
|
return reloc;
|
}
|
}
|
|
|
/* Perform any cgen specific initialisation.
|
/* Perform any cgen specific initialisation.
|
Called after gas_cgen_cpu_desc has been created. */
|
Called after gas_cgen_cpu_desc has been created. */
|
|
|
void
|
void
|
gas_cgen_begin ()
|
gas_cgen_begin ()
|
{
|
{
|
if (flag_signed_overflow_ok)
|
if (flag_signed_overflow_ok)
|
cgen_set_signed_overflow_ok (gas_cgen_cpu_desc);
|
cgen_set_signed_overflow_ok (gas_cgen_cpu_desc);
|
else
|
else
|
cgen_clear_signed_overflow_ok (gas_cgen_cpu_desc);
|
cgen_clear_signed_overflow_ok (gas_cgen_cpu_desc);
|
}
|
}
|
|
|
