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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [pa/] [pa32-linux.h] - Blame information for rev 282

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1 282 jeremybenn
/* Definitions for PA_RISC with ELF-32 format
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   Copyright (C) 2000, 2002, 2004, 2006, 2007 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC 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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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC 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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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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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along with GCC; see the file COPYING3.  If not see
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<http://www.gnu.org/licenses/>.  */
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/* Turn off various SOM crap we don't want.  */
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#undef TARGET_ELF32
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#define TARGET_ELF32 1
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/* The libcall __canonicalize_funcptr_for_compare is referenced in
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   crtend.o and the reference isn't resolved in objects that don't
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   compare function pointers.  Thus, we need to play games to provide
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   a reference in crtbegin.o.  The rest of the define is the same
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   as that in crtstuff.c  */
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#define CTOR_LIST_BEGIN \
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  asm (".type __canonicalize_funcptr_for_compare,@function\n"           \
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"       .text\n"                                                        \
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"       .word __canonicalize_funcptr_for_compare-$PIC_pcrel$0");        \
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  STATIC func_ptr __CTOR_LIST__[1]                                      \
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    __attribute__ ((__unused__, section(".ctors"),                      \
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                    aligned(sizeof(func_ptr))))                         \
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    = { (func_ptr) (-1) }
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/* This is a PIC version of CRT_CALL_STATIC_FUNCTION.  The PIC
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   register has to be saved before the call and restored after
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   the call.  We assume that register %r4 is available for this
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   purpose.  The hack prevents GCC from deleting the restore.  */
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#ifdef CRTSTUFFS_O
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#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)      \
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static void __attribute__((__used__))                   \
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call_ ## FUNC (void)                                    \
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{                                                       \
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  asm (SECTION_OP);                                     \
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  asm volatile ("bl " #FUNC ",%%r2\n\t"                 \
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                "copy %%r19,%%r4\n\t"                   \
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                "copy %%r4,%%r19\n"                     \
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                :                                       \
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                :                                       \
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                : "r1", "r2", "r4", "r20", "r21",       \
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                  "r22", "r23", "r24", "r25", "r26",    \
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                  "r27", "r28", "r29", "r31");          \
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  asm (TEXT_SECTION_ASM_OP);                            \
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}
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#endif
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#define MD_UNWIND_SUPPORT "config/pa/linux-unwind.h"

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