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1 /* Definitions for PA_RISC with ELF-32 format
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2 Copyright (C) 2000, 2002, 2004, 2006, 2007 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GCC is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 /* Turn off various SOM crap we don't want. */
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21 #undef TARGET_ELF32
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22 #define TARGET_ELF32 1
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23
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24 /* The libcall __canonicalize_funcptr_for_compare is referenced in
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25 crtend.o and the reference isn't resolved in objects that don't
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26 compare function pointers. Thus, we need to play games to provide
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27 a reference in crtbegin.o. The rest of the define is the same
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28 as that in crtstuff.c */
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29 #define CTOR_LIST_BEGIN \
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30 asm (".type __canonicalize_funcptr_for_compare,@function\n" \
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31 " .text\n" \
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32 " .word __canonicalize_funcptr_for_compare-$PIC_pcrel$0"); \
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33 STATIC func_ptr __CTOR_LIST__[1] \
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34 __attribute__ ((__unused__, section(".ctors"), \
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35 aligned(sizeof(func_ptr)))) \
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36 = { (func_ptr) (-1) }
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37
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38 /* This is a PIC version of CRT_CALL_STATIC_FUNCTION. The PIC
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39 register has to be saved before the call and restored after
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40 the call. We assume that register %r4 is available for this
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41 purpose. The hack prevents GCC from deleting the restore. */
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42 #ifdef CRTSTUFFS_O
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43 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
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44 static void __attribute__((__used__)) \
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45 call_ ## FUNC (void) \
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46 { \
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47 asm (SECTION_OP); \
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48 asm volatile ("bl " #FUNC ",%%r2\n\t" \
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49 "copy %%r19,%%r4\n\t" \
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50 "copy %%r4,%%r19\n" \
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51 : \
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52 : \
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53 : "r1", "r2", "r4", "r20", "r21", \
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54 "r22", "r23", "r24", "r25", "r26", \
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55 "r27", "r28", "r29", "r31"); \
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56 asm (TEXT_SECTION_ASM_OP); \
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57 }
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58 #endif
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59
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60 #define MD_UNWIND_SUPPORT "config/pa/linux-unwind.h"
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