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-rw-r--r--arch/powerpc/lib/crtsavres.S545
1 files changed, 545 insertions, 0 deletions
diff --git a/arch/powerpc/lib/crtsavres.S b/arch/powerpc/lib/crtsavres.S
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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
+ * 64 bit additions from reading the PPC elf64abi document.
+ *
+ * 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.
+ */
+
+#include <asm/ppc_asm.h>
+
+ .file "crtsavres.S"
+
+#ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+
+ .section ".text"
+
+#ifndef CONFIG_PPC64
+
+/* 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
+
+#ifdef CONFIG_ALTIVEC
+/* Called with r0 pointing just beyond the end of the vector save area. */
+
+_GLOBAL(_savevr_20)
+ li r11,-192
+ stvx v20,r11,r0
+_GLOBAL(_savevr_21)
+ li r11,-176
+ stvx v21,r11,r0
+_GLOBAL(_savevr_22)
+ li r11,-160
+ stvx v22,r11,r0
+_GLOBAL(_savevr_23)
+ li r11,-144
+ stvx v23,r11,r0
+_GLOBAL(_savevr_24)
+ li r11,-128
+ stvx v24,r11,r0
+_GLOBAL(_savevr_25)
+ li r11,-112
+ stvx v25,r11,r0
+_GLOBAL(_savevr_26)
+ li r11,-96
+ stvx v26,r11,r0
+_GLOBAL(_savevr_27)
+ li r11,-80
+ stvx v27,r11,r0
+_GLOBAL(_savevr_28)
+ li r11,-64
+ stvx v28,r11,r0
+_GLOBAL(_savevr_29)
+ li r11,-48
+ stvx v29,r11,r0
+_GLOBAL(_savevr_30)
+ li r11,-32
+ stvx v30,r11,r0
+_GLOBAL(_savevr_31)
+ li r11,-16
+ stvx v31,r11,r0
+ blr
+
+_GLOBAL(_restvr_20)
+ li r11,-192
+ lvx v20,r11,r0
+_GLOBAL(_restvr_21)
+ li r11,-176
+ lvx v21,r11,r0
+_GLOBAL(_restvr_22)
+ li r11,-160
+ lvx v22,r11,r0
+_GLOBAL(_restvr_23)
+ li r11,-144
+ lvx v23,r11,r0
+_GLOBAL(_restvr_24)
+ li r11,-128
+ lvx v24,r11,r0
+_GLOBAL(_restvr_25)
+ li r11,-112
+ lvx v25,r11,r0
+_GLOBAL(_restvr_26)
+ li r11,-96
+ lvx v26,r11,r0
+_GLOBAL(_restvr_27)
+ li r11,-80
+ lvx v27,r11,r0
+_GLOBAL(_restvr_28)
+ li r11,-64
+ lvx v28,r11,r0
+_GLOBAL(_restvr_29)
+ li r11,-48
+ lvx v29,r11,r0
+_GLOBAL(_restvr_30)
+ li r11,-32
+ lvx v30,r11,r0
+_GLOBAL(_restvr_31)
+ li r11,-16
+ lvx v31,r11,r0
+ blr
+
+#endif /* CONFIG_ALTIVEC */
+
+#else /* CONFIG_PPC64 */
+
+.globl _savegpr0_14
+_savegpr0_14:
+ std r14,-144(r1)
+.globl _savegpr0_15
+_savegpr0_15:
+ std r15,-136(r1)
+.globl _savegpr0_16
+_savegpr0_16:
+ std r16,-128(r1)
+.globl _savegpr0_17
+_savegpr0_17:
+ std r17,-120(r1)
+.globl _savegpr0_18
+_savegpr0_18:
+ std r18,-112(r1)
+.globl _savegpr0_19
+_savegpr0_19:
+ std r19,-104(r1)
+.globl _savegpr0_20
+_savegpr0_20:
+ std r20,-96(r1)
+.globl _savegpr0_21
+_savegpr0_21:
+ std r21,-88(r1)
+.globl _savegpr0_22
+_savegpr0_22:
+ std r22,-80(r1)
+.globl _savegpr0_23
+_savegpr0_23:
+ std r23,-72(r1)
+.globl _savegpr0_24
+_savegpr0_24:
+ std r24,-64(r1)
+.globl _savegpr0_25
+_savegpr0_25:
+ std r25,-56(r1)
+.globl _savegpr0_26
+_savegpr0_26:
+ std r26,-48(r1)
+.globl _savegpr0_27
+_savegpr0_27:
+ std r27,-40(r1)
+.globl _savegpr0_28
+_savegpr0_28:
+ std r28,-32(r1)
+.globl _savegpr0_29
+_savegpr0_29:
+ std r29,-24(r1)
+.globl _savegpr0_30
+_savegpr0_30:
+ std r30,-16(r1)
+.globl _savegpr0_31
+_savegpr0_31:
+ std r31,-8(r1)
+ std r0,16(r1)
+ blr
+
+.globl _restgpr0_14
+_restgpr0_14:
+ ld r14,-144(r1)
+.globl _restgpr0_15
+_restgpr0_15:
+ ld r15,-136(r1)
+.globl _restgpr0_16
+_restgpr0_16:
+ ld r16,-128(r1)
+.globl _restgpr0_17
+_restgpr0_17:
+ ld r17,-120(r1)
+.globl _restgpr0_18
+_restgpr0_18:
+ ld r18,-112(r1)
+.globl _restgpr0_19
+_restgpr0_19:
+ ld r19,-104(r1)
+.globl _restgpr0_20
+_restgpr0_20:
+ ld r20,-96(r1)
+.globl _restgpr0_21
+_restgpr0_21:
+ ld r21,-88(r1)
+.globl _restgpr0_22
+_restgpr0_22:
+ ld r22,-80(r1)
+.globl _restgpr0_23
+_restgpr0_23:
+ ld r23,-72(r1)
+.globl _restgpr0_24
+_restgpr0_24:
+ ld r24,-64(r1)
+.globl _restgpr0_25
+_restgpr0_25:
+ ld r25,-56(r1)
+.globl _restgpr0_26
+_restgpr0_26:
+ ld r26,-48(r1)
+.globl _restgpr0_27
+_restgpr0_27:
+ ld r27,-40(r1)
+.globl _restgpr0_28
+_restgpr0_28:
+ ld r28,-32(r1)
+.globl _restgpr0_29
+_restgpr0_29:
+ ld r0,16(r1)
+ ld r29,-24(r1)
+ mtlr r0
+ ld r30,-16(r1)
+ ld r31,-8(r1)
+ blr
+
+.globl _restgpr0_30
+_restgpr0_30:
+ ld r30,-16(r1)
+.globl _restgpr0_31
+_restgpr0_31:
+ ld r0,16(r1)
+ ld r31,-8(r1)
+ mtlr r0
+ blr
+
+#ifdef CONFIG_ALTIVEC
+/* Called with r0 pointing just beyond the end of the vector save area. */
+
+.globl _savevr_20
+_savevr_20:
+ li r12,-192
+ stvx v20,r12,r0
+.globl _savevr_21
+_savevr_21:
+ li r12,-176
+ stvx v21,r12,r0
+.globl _savevr_22
+_savevr_22:
+ li r12,-160
+ stvx v22,r12,r0
+.globl _savevr_23
+_savevr_23:
+ li r12,-144
+ stvx v23,r12,r0
+.globl _savevr_24
+_savevr_24:
+ li r12,-128
+ stvx v24,r12,r0
+.globl _savevr_25
+_savevr_25:
+ li r12,-112
+ stvx v25,r12,r0
+.globl _savevr_26
+_savevr_26:
+ li r12,-96
+ stvx v26,r12,r0
+.globl _savevr_27
+_savevr_27:
+ li r12,-80
+ stvx v27,r12,r0
+.globl _savevr_28
+_savevr_28:
+ li r12,-64
+ stvx v28,r12,r0
+.globl _savevr_29
+_savevr_29:
+ li r12,-48
+ stvx v29,r12,r0
+.globl _savevr_30
+_savevr_30:
+ li r12,-32
+ stvx v30,r12,r0
+.globl _savevr_31
+_savevr_31:
+ li r12,-16
+ stvx v31,r12,r0
+ blr
+
+.globl _restvr_20
+_restvr_20:
+ li r12,-192
+ lvx v20,r12,r0
+.globl _restvr_21
+_restvr_21:
+ li r12,-176
+ lvx v21,r12,r0
+.globl _restvr_22
+_restvr_22:
+ li r12,-160
+ lvx v22,r12,r0
+.globl _restvr_23
+_restvr_23:
+ li r12,-144
+ lvx v23,r12,r0
+.globl _restvr_24
+_restvr_24:
+ li r12,-128
+ lvx v24,r12,r0
+.globl _restvr_25
+_restvr_25:
+ li r12,-112
+ lvx v25,r12,r0
+.globl _restvr_26
+_restvr_26:
+ li r12,-96
+ lvx v26,r12,r0
+.globl _restvr_27
+_restvr_27:
+ li r12,-80
+ lvx v27,r12,r0
+.globl _restvr_28
+_restvr_28:
+ li r12,-64
+ lvx v28,r12,r0
+.globl _restvr_29
+_restvr_29:
+ li r12,-48
+ lvx v29,r12,r0
+.globl _restvr_30
+_restvr_30:
+ li r12,-32
+ lvx v30,r12,r0
+.globl _restvr_31
+_restvr_31:
+ li r12,-16
+ lvx v31,r12,r0
+ blr
+
+#endif /* CONFIG_ALTIVEC */
+
+#endif /* CONFIG_PPC64 */
+
+#endif