linux/arch/powerpc/boot/crtsavres.S

/*
 * 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.
 */

#ifdef __powerpc64__
#error "On PPC64, FPR save/restore functions are provided by the linker."
#endif

	.file	"crtsavres.S"
	.section ".text"

#define _GLOBAL(name) \
	.type name,@function; \
	.globl name; \
name:

/* 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.  */

_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

/* 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.  */

_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

/* 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.  */

_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
[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> 2008-06-13 01:19:06 +04:00			`/*`
			`* 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.`
			`*/`

powerpc/64: Do not link crtsaveres.o in boot crtsaveres.S is empty with 64-bit builds already, so just don't build and link it to match the vmlinux build. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Use CONFIG_PPC64_BOOT_WRAPPER not CONFIG_PPC32 to fix BE build] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 2017-05-11 18:56:50 +03:00			`#ifdef __powerpc64__`
			`#error "On PPC64, FPR save/restore functions are provided by the linker."`
			`#endif`

[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> 2008-06-13 01:19:06 +04:00			`.file "crtsavres.S"`
			`.section ".text"`

			`#define _GLOBAL(name) \`
			`.type name,@function; \`
			`.globl name; \`
			`name:`

			`/* 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. */`

			`_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`

			`/* 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. */`

			`_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`

			`/* 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. */`

			`_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`