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-rw-r--r--contrib/gcc/config/rs6000/tramp.asm120
1 files changed, 0 insertions, 120 deletions
diff --git a/contrib/gcc/config/rs6000/tramp.asm b/contrib/gcc/config/rs6000/tramp.asm
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index fe05401e039c..000000000000
--- a/contrib/gcc/config/rs6000/tramp.asm
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-/* Special support for trampolines
- *
- * Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
- * Written By Michael Meissner
- *
- * 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.
- */
-
-/* Set up trampolines. */
-
- .file "tramp.asm"
- .section ".text"
- #include "ppc-asm.h"
- #include "auto-host.h"
-
-#ifndef __powerpc64__
- .type trampoline_initial,@object
- .align 2
-trampoline_initial:
- mflr r0
- bcl 20,31,1f
-.Lfunc = .-trampoline_initial
- .long 0 /* will be replaced with function address */
-.Lchain = .-trampoline_initial
- .long 0 /* will be replaced with static chain */
-1: mflr r11
- mtlr r0
- lwz r0,0(r11) /* function address */
- lwz r11,4(r11) /* static chain */
- mtctr r0
- bctr
-
-trampoline_size = .-trampoline_initial
- .size trampoline_initial,trampoline_size
-
-
-/* R3 = stack address to store trampoline */
-/* R4 = length of trampoline area */
-/* R5 = function address */
-/* R6 = static chain */
-
-FUNC_START(__trampoline_setup)
- mflr r0 /* save return address */
- bcl 20,31,.LCF0 /* load up __trampoline_initial into r7 */
-.LCF0:
- mflr r11
- addi r7,r11,trampoline_initial-4-.LCF0 /* trampoline address -4 */
-
- li r8,trampoline_size /* verify that the trampoline is big enough */
- cmpw cr1,r8,r4
- srwi r4,r4,2 /* # words to move */
- addi r9,r3,-4 /* adjust pointer for lwzu */
- mtctr r4
- blt cr1,.Labort
-
- mtlr r0
-
- /* Copy the instructions to the stack */
-.Lmove:
- lwzu r10,4(r7)
- stwu r10,4(r9)
- bdnz .Lmove
-
- /* Store correct function and static chain */
- stw r5,.Lfunc(r3)
- stw r6,.Lchain(r3)
-
- /* Now flush both caches */
- mtctr r4
-.Lcache:
- icbi 0,r3
- dcbf 0,r3
- addi r3,r3,4
- bdnz .Lcache
-
- /* Finally synchronize things & return */
- sync
- isync
- blr
-
-.Labort:
-#if (defined(__PIC__) || defined(__pic__)) && defined HAVE_AS_REL16
- bcl 20,31,1f
-1: mflr r30
- addis r30,r30,_GLOBAL_OFFSET_TABLE_-1b@ha
- addi r30,r30,_GLOBAL_OFFSET_TABLE_-1b@l
-#endif
- bl JUMP_TARGET(abort)
-FUNC_END(__trampoline_setup)
-
-#endif
-
- .section .note.GNU-stack,"",%progbits