138 lines
4.7 KiB
C
138 lines
4.7 KiB
C
|
/* $NetBSD: dot_init.h,v 1.10 2009/12/14 01:04:02 matt Exp $ */
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 2001 Ross Harvey
|
||
|
|
* Copyright (c) 2001 Simon Burge
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. All advertising materials mentioning features or use of this software
|
||
|
|
* must display the following acknowledgement:
|
||
|
|
* This product includes software developed by the NetBSD
|
||
|
|
* Foundation, Inc. and its contributors.
|
||
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||
|
|
* contributors may be used to endorse or promote products derived
|
||
|
|
* from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
||
|
|
|
||
|
|
#define t9 "$25"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* For O32/O64, allocate 8 "slots" for the stack frame. Store GP in the 4th
|
||
|
|
* (zero-based) slot (since this is where compiler generated code for fallthru
|
||
|
|
* processing expects it to be), and the RA in seventh (highest address).
|
||
|
|
*
|
||
|
|
* For N32/N64, allocate 4 8-byte "slots" for the stack frame. Store GP in the
|
||
|
|
* 2nd (zero-based) slot (since ...) and the RA in third (highest address).
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef __mips_o32
|
||
|
|
#define sPTR_ADDU "addu"
|
||
|
|
#define sREG_L "lw"
|
||
|
|
#define sREG_S "sw"
|
||
|
|
#define sRAOFF "28"
|
||
|
|
#define sFRAMESZ "32"
|
||
|
|
#define MD_GPRESTORE /* nothing */
|
||
|
|
#else
|
||
|
|
#define sPTR_ADDU "daddu"
|
||
|
|
#define sREG_L "ld"
|
||
|
|
#define sREG_S "sd"
|
||
|
|
#if defined(__mips_n32) || defined(__mips_n64)
|
||
|
|
#define MD_GPRESTORE "ld $gp,8($sp)" "\n\t"
|
||
|
|
#define sRAOFF "24"
|
||
|
|
#define sFRAMESZ "32"
|
||
|
|
#elif defined(__mips_o64)
|
||
|
|
#define sRAOFF "56"
|
||
|
|
#define sFRAMESZ "64"
|
||
|
|
#define MD_GPRESTORE /* nothing */
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __ABICALLS__
|
||
|
|
#if defined(__mips_o32) || defined(__mips_o64)
|
||
|
|
#define MD_FUNCTION_PROLOGUE(entry_pt) \
|
||
|
|
".set noreorder" "\n\t" \
|
||
|
|
".cpload "t9 "\n\t" \
|
||
|
|
".set reorder" "\n\t" \
|
||
|
|
sPTR_ADDU" $sp,$sp,-"sFRAMESZ "\n\t" \
|
||
|
|
".cprestore 16" "\n\t" \
|
||
|
|
sREG_S" $ra,"sRAOFF"($sp)" "\n\t"
|
||
|
|
|
||
|
|
#elif defined(__mips_n32) || defined(__mips_n64)
|
||
|
|
#define MD_FUNCTION_PROLOGUE(entry_pt) \
|
||
|
|
".set noreorder" "\n\t" \
|
||
|
|
"daddu $sp,$sp,-32" "\n\t" \
|
||
|
|
".cpsetup "t9", 8, "#entry_pt "\n\t" \
|
||
|
|
"sd $ra,24($sp)" "\n\t" \
|
||
|
|
".set reorder" "\n\t"
|
||
|
|
#else
|
||
|
|
#error ABI not supported (__ABICALLS)
|
||
|
|
#endif
|
||
|
|
#else
|
||
|
|
#if defined(__mips_o32) || defined(__mips_o64)
|
||
|
|
#define MD_FUNCTION_PROLOGUE(entry_pt) \
|
||
|
|
sPTR_ADDU" $sp,$sp,-"sFRAMESZ "\n\t" \
|
||
|
|
sREG_S" $ra,"sRAOFF"($sp)" "\n\t"
|
||
|
|
|
||
|
|
#elif defined(__mips_n32) || defined(__mips_n64)
|
||
|
|
/*
|
||
|
|
* On N32/N64, GP is callee-saved.
|
||
|
|
*/
|
||
|
|
#define MD_FUNCTION_PROLOGUE(entry_pt) \
|
||
|
|
"daddu $sp,$sp,-32" "\n\t" \
|
||
|
|
"sd $gp,8($sp)" "\n\t" \
|
||
|
|
"sd $ra,24($sp)" "\n\t"
|
||
|
|
#else
|
||
|
|
#error ABI not supported (!__ABICALLS)
|
||
|
|
#endif
|
||
|
|
#endif /* __ABICALLS */
|
||
|
|
|
||
|
|
|
||
|
|
#define MD_SECTION_PROLOGUE(sect, entry_pt) \
|
||
|
|
__asm ( \
|
||
|
|
".section "#sect",\"ax\",@progbits" "\n\t" \
|
||
|
|
".align 2" "\n\t" \
|
||
|
|
".globl "#entry_pt "\n\t" \
|
||
|
|
#entry_pt":" "\n\t" \
|
||
|
|
MD_FUNCTION_PROLOGUE(entry_pt) \
|
||
|
|
" /* fall thru */" "\n\t" \
|
||
|
|
".previous")
|
||
|
|
|
||
|
|
#define MD_SECTION_EPILOGUE(sect) \
|
||
|
|
__asm ( \
|
||
|
|
".section "#sect",\"ax\",@progbits" "\n\t" \
|
||
|
|
sREG_L" $ra,"sRAOFF"($sp)" "\n\t" \
|
||
|
|
MD_GPRESTORE \
|
||
|
|
".set noreorder" "\n\t" \
|
||
|
|
"j $ra" "\n\t" \
|
||
|
|
sPTR_ADDU" $sp,$sp,"sFRAMESZ "\n\t" \
|
||
|
|
".set reorder" "\n\t" \
|
||
|
|
".previous")
|
||
|
|
|
||
|
|
#define MD_INIT_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.init, _init)
|
||
|
|
#define MD_FINI_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.fini, _fini)
|
||
|
|
|
||
|
|
#define MD_INIT_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.init)
|
||
|
|
#define MD_FINI_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.fini)
|