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kernel/linux-rt-4.4.41/arch/powerpc/boot/crtsavres.S 5.98 KB
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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.
   */
  
  	.file	"crtsavres.S"
  	.section ".text"
  
  /* On PowerPC64 Linux, these functions are provided by the linker.  */
  #ifndef __powerpc64__
  
  #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
  #endif