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Diffstat (limited to 'contrib/gcc/config/rs6000/tramp.asm')
-rw-r--r-- | contrib/gcc/config/rs6000/tramp.asm | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/contrib/gcc/config/rs6000/tramp.asm b/contrib/gcc/config/rs6000/tramp.asm deleted file mode 100644 index fe05401e039c..000000000000 --- a/contrib/gcc/config/rs6000/tramp.asm +++ /dev/null @@ -1,120 +0,0 @@ -/* 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 |