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[POWERPC] Fix bootwrapper builds with newer gcc versions
GCC 4.4.x looks to be adding support for generating out-of-line register saves/restores based on: http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01678.html This breaks the bootwrapper as we'd need to link with libgcc to get the implementation of the register save/restores. To workaround this issue, we just stole the save/restore code from gcc and simplified it down for our needs (integer only). Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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/* | ||
* Special support for eabi and SVR4 | ||
* | ||
* Copyright (C) 1995, 1996, 1998, 2000, 2001 Free Software Foundation, Inc. | ||
* Copyright 2008 Freescale Semiconductor, Inc. | ||
* Written By Michael Meissner | ||
* | ||
* Based on gcc/config/rs6000/crtsavres.asm from gcc | ||
* | ||
* This file is free software; you can redistribute it and/or modify it | ||
* under the terms of the GNU General Public License as published by the | ||
* Free Software Foundation; either version 2, or (at your option) any | ||
* later version. | ||
* | ||
* In addition to the permissions in the GNU General Public License, the | ||
* Free Software Foundation gives you unlimited permission to link the | ||
* compiled version of this file with other programs, and to distribute | ||
* those programs without any restriction coming from the use of this | ||
* file. (The General Public License restrictions do apply in other | ||
* respects; for example, they cover modification of the file, and | ||
* distribution when not linked into another program.) | ||
* | ||
* This file is distributed in the hope that it will be useful, but | ||
* WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU General Public License | ||
* along with this program; see the file COPYING. If not, write to | ||
* the Free Software Foundation, 51 Franklin Street, Fifth Floor, | ||
* Boston, MA 02110-1301, USA. | ||
* | ||
* As a special exception, if you link this library with files | ||
* compiled with GCC to produce an executable, this does not cause | ||
* the resulting executable to be covered by the GNU General Public License. | ||
* This exception does not however invalidate any other reasons why | ||
* the executable file might be covered by the GNU General Public License. | ||
*/ | ||
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||
.file "crtsavres.S" | ||
.section ".text" | ||
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/* On PowerPC64 Linux, these functions are provided by the linker. */ | ||
#ifndef __powerpc64__ | ||
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#define _GLOBAL(name) \ | ||
.type name,@function; \ | ||
.globl name; \ | ||
name: | ||
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/* Routines for saving integer registers, called by the compiler. */ | ||
/* Called with r11 pointing to the stack header word of the caller of the */ | ||
/* function, just beyond the end of the integer save area. */ | ||
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_GLOBAL(_savegpr_14) | ||
_GLOBAL(_save32gpr_14) | ||
stw 14,-72(11) /* save gp registers */ | ||
_GLOBAL(_savegpr_15) | ||
_GLOBAL(_save32gpr_15) | ||
stw 15,-68(11) | ||
_GLOBAL(_savegpr_16) | ||
_GLOBAL(_save32gpr_16) | ||
stw 16,-64(11) | ||
_GLOBAL(_savegpr_17) | ||
_GLOBAL(_save32gpr_17) | ||
stw 17,-60(11) | ||
_GLOBAL(_savegpr_18) | ||
_GLOBAL(_save32gpr_18) | ||
stw 18,-56(11) | ||
_GLOBAL(_savegpr_19) | ||
_GLOBAL(_save32gpr_19) | ||
stw 19,-52(11) | ||
_GLOBAL(_savegpr_20) | ||
_GLOBAL(_save32gpr_20) | ||
stw 20,-48(11) | ||
_GLOBAL(_savegpr_21) | ||
_GLOBAL(_save32gpr_21) | ||
stw 21,-44(11) | ||
_GLOBAL(_savegpr_22) | ||
_GLOBAL(_save32gpr_22) | ||
stw 22,-40(11) | ||
_GLOBAL(_savegpr_23) | ||
_GLOBAL(_save32gpr_23) | ||
stw 23,-36(11) | ||
_GLOBAL(_savegpr_24) | ||
_GLOBAL(_save32gpr_24) | ||
stw 24,-32(11) | ||
_GLOBAL(_savegpr_25) | ||
_GLOBAL(_save32gpr_25) | ||
stw 25,-28(11) | ||
_GLOBAL(_savegpr_26) | ||
_GLOBAL(_save32gpr_26) | ||
stw 26,-24(11) | ||
_GLOBAL(_savegpr_27) | ||
_GLOBAL(_save32gpr_27) | ||
stw 27,-20(11) | ||
_GLOBAL(_savegpr_28) | ||
_GLOBAL(_save32gpr_28) | ||
stw 28,-16(11) | ||
_GLOBAL(_savegpr_29) | ||
_GLOBAL(_save32gpr_29) | ||
stw 29,-12(11) | ||
_GLOBAL(_savegpr_30) | ||
_GLOBAL(_save32gpr_30) | ||
stw 30,-8(11) | ||
_GLOBAL(_savegpr_31) | ||
_GLOBAL(_save32gpr_31) | ||
stw 31,-4(11) | ||
blr | ||
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/* Routines for restoring integer registers, called by the compiler. */ | ||
/* Called with r11 pointing to the stack header word of the caller of the */ | ||
/* function, just beyond the end of the integer restore area. */ | ||
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_GLOBAL(_restgpr_14) | ||
_GLOBAL(_rest32gpr_14) | ||
lwz 14,-72(11) /* restore gp registers */ | ||
_GLOBAL(_restgpr_15) | ||
_GLOBAL(_rest32gpr_15) | ||
lwz 15,-68(11) | ||
_GLOBAL(_restgpr_16) | ||
_GLOBAL(_rest32gpr_16) | ||
lwz 16,-64(11) | ||
_GLOBAL(_restgpr_17) | ||
_GLOBAL(_rest32gpr_17) | ||
lwz 17,-60(11) | ||
_GLOBAL(_restgpr_18) | ||
_GLOBAL(_rest32gpr_18) | ||
lwz 18,-56(11) | ||
_GLOBAL(_restgpr_19) | ||
_GLOBAL(_rest32gpr_19) | ||
lwz 19,-52(11) | ||
_GLOBAL(_restgpr_20) | ||
_GLOBAL(_rest32gpr_20) | ||
lwz 20,-48(11) | ||
_GLOBAL(_restgpr_21) | ||
_GLOBAL(_rest32gpr_21) | ||
lwz 21,-44(11) | ||
_GLOBAL(_restgpr_22) | ||
_GLOBAL(_rest32gpr_22) | ||
lwz 22,-40(11) | ||
_GLOBAL(_restgpr_23) | ||
_GLOBAL(_rest32gpr_23) | ||
lwz 23,-36(11) | ||
_GLOBAL(_restgpr_24) | ||
_GLOBAL(_rest32gpr_24) | ||
lwz 24,-32(11) | ||
_GLOBAL(_restgpr_25) | ||
_GLOBAL(_rest32gpr_25) | ||
lwz 25,-28(11) | ||
_GLOBAL(_restgpr_26) | ||
_GLOBAL(_rest32gpr_26) | ||
lwz 26,-24(11) | ||
_GLOBAL(_restgpr_27) | ||
_GLOBAL(_rest32gpr_27) | ||
lwz 27,-20(11) | ||
_GLOBAL(_restgpr_28) | ||
_GLOBAL(_rest32gpr_28) | ||
lwz 28,-16(11) | ||
_GLOBAL(_restgpr_29) | ||
_GLOBAL(_rest32gpr_29) | ||
lwz 29,-12(11) | ||
_GLOBAL(_restgpr_30) | ||
_GLOBAL(_rest32gpr_30) | ||
lwz 30,-8(11) | ||
_GLOBAL(_restgpr_31) | ||
_GLOBAL(_rest32gpr_31) | ||
lwz 31,-4(11) | ||
blr | ||
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/* Routines for restoring integer registers, called by the compiler. */ | ||
/* Called with r11 pointing to the stack header word of the caller of the */ | ||
/* function, just beyond the end of the integer restore area. */ | ||
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||
_GLOBAL(_restgpr_14_x) | ||
_GLOBAL(_rest32gpr_14_x) | ||
lwz 14,-72(11) /* restore gp registers */ | ||
_GLOBAL(_restgpr_15_x) | ||
_GLOBAL(_rest32gpr_15_x) | ||
lwz 15,-68(11) | ||
_GLOBAL(_restgpr_16_x) | ||
_GLOBAL(_rest32gpr_16_x) | ||
lwz 16,-64(11) | ||
_GLOBAL(_restgpr_17_x) | ||
_GLOBAL(_rest32gpr_17_x) | ||
lwz 17,-60(11) | ||
_GLOBAL(_restgpr_18_x) | ||
_GLOBAL(_rest32gpr_18_x) | ||
lwz 18,-56(11) | ||
_GLOBAL(_restgpr_19_x) | ||
_GLOBAL(_rest32gpr_19_x) | ||
lwz 19,-52(11) | ||
_GLOBAL(_restgpr_20_x) | ||
_GLOBAL(_rest32gpr_20_x) | ||
lwz 20,-48(11) | ||
_GLOBAL(_restgpr_21_x) | ||
_GLOBAL(_rest32gpr_21_x) | ||
lwz 21,-44(11) | ||
_GLOBAL(_restgpr_22_x) | ||
_GLOBAL(_rest32gpr_22_x) | ||
lwz 22,-40(11) | ||
_GLOBAL(_restgpr_23_x) | ||
_GLOBAL(_rest32gpr_23_x) | ||
lwz 23,-36(11) | ||
_GLOBAL(_restgpr_24_x) | ||
_GLOBAL(_rest32gpr_24_x) | ||
lwz 24,-32(11) | ||
_GLOBAL(_restgpr_25_x) | ||
_GLOBAL(_rest32gpr_25_x) | ||
lwz 25,-28(11) | ||
_GLOBAL(_restgpr_26_x) | ||
_GLOBAL(_rest32gpr_26_x) | ||
lwz 26,-24(11) | ||
_GLOBAL(_restgpr_27_x) | ||
_GLOBAL(_rest32gpr_27_x) | ||
lwz 27,-20(11) | ||
_GLOBAL(_restgpr_28_x) | ||
_GLOBAL(_rest32gpr_28_x) | ||
lwz 28,-16(11) | ||
_GLOBAL(_restgpr_29_x) | ||
_GLOBAL(_rest32gpr_29_x) | ||
lwz 29,-12(11) | ||
_GLOBAL(_restgpr_30_x) | ||
_GLOBAL(_rest32gpr_30_x) | ||
lwz 30,-8(11) | ||
_GLOBAL(_restgpr_31_x) | ||
_GLOBAL(_rest32gpr_31_x) | ||
lwz 0,4(11) | ||
lwz 31,-4(11) | ||
mtlr 0 | ||
mr 1,11 | ||
blr | ||
#endif |