diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sh/makecontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sh/makecontext.S | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/sysdeps/unix/sysv/linux/sh/makecontext.S b/sysdeps/unix/sysv/linux/sh/makecontext.S deleted file mode 100644 index 4506961007..0000000000 --- a/sysdeps/unix/sysv/linux/sh/makecontext.S +++ /dev/null @@ -1,160 +0,0 @@ -/* Create new context. - Copyright (C) 2005-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> -#include <abort-instr.h> - -#include "ucontext_i.h" - -/* void __makecontext (struct ucontext *ucp, void (*func)(), int argc, ...); - __makecontext sets up a stack and registers for context to run a given - function. The registers are set up like this: - r4-r7: parameters 1 to 4 - r8 : uc_link from ucontext structure - pc : (*func) pointer - pr : address of exitcode - r15 : stack pointer for func. */ - - .text - .align 5 -ENTRY(__makecontext) - mov #4, r3 - mov.l @(oSS_SP,r4), r1 /* r1 <- ucb->stack_base */ - mov.l @(oSS_SIZE,r4), r2 /* r2 <- ucb->stack_size */ - add r1, r2 /* r2 <- stack_top */ - cmp/gt r3, r6 /* argc > 4? */ - bf/s 1f - shlr2 r2 /* r2 <- stack_top / 4 */ - sub r6, r2 - add r3, r2 -1: - shll2 r2 /* r2 <- stack_top - ((argc > 4) ? 4 * (argc - 4) : 0 */ - mov #oR15, r0 - mov.l @(oLINK,r4), r1 - mov.l r2, @(r0,r4) /* ucp->r15 <- r2 */ - mov.l r1, @(oR8,r4) /* ucp->r8 <- ucp->uc_link */ - mov #oPC, r0 - mov.l r5, @(r0,r4) /* ucp->PC <- func */ - - cmp/pl r6 /* argc > 0? */ - bf/s .L1 - dt r6 - mov.l r7, @(oR4,r4) /* ucp->r4 <- argv[0] */ - cmp/pl r6 /* argc > 1? */ - bf/s .L1 - dt r6 - mov.l @(0,r15), r1 - mov.l r1, @(oR5,r4) /* ucp->r5 <- argv[1] */ - cmp/pl r6 /* argc > 2? */ - bf/s .L1 - dt r6 - mov.l @(4,r15), r1 - mov.l r1, @(oR6,r4) /* ucp->r6 <- argv[2] */ - cmp/pl r6 /* argc > 3? */ - bf/s .L1 - dt r6 - mov.l @(8,r15), r1 - mov.l r1, @(oR7,r4) /* ucp->r7 <- argv[3] */ - mov #12,r0 -.L0: /* Save remaining argv[] on the stack. */ - cmp/pl r6 - bf/s .L1 - dt r6 - mov.l @(r0,r15), r1 - mov.l r1, @r2 - add #4, r0 - bra .L0 - add #4, r2 -.L1: -#ifdef PIC - mova .Lexitcode, r0 -#else - mov.l .L2, r0 -#endif - add #oPR, r4 - rts - mov.l r0, @r4 /* ucp->pr <- exitcode */ -#ifndef PIC - .align 2 -.L2: - .long .Lexitcode -#endif - cfi_endproc - - .align 5 - cfi_startproc -.Lexitcode: -#ifdef PIC - mov.l r12, @-r15 - cfi_adjust_cfa_offset (4) - cfi_rel_offset (r12, 0) - mova .Lgot, r0 - mov.l .Lgot, r12 - add r0, r12 -#endif - tst r8, r8 /* ucb->uc_link == NULL? */ - bt/s 2f - mov r8, r4 /* r4 <- ucb->uc_link */ - mov.l .Lsetcontext, r1 - sts.l pr, @-r15 - cfi_adjust_cfa_offset (4) - cfi_rel_offset (pr, 0) -#ifdef PIC - bsrf r1 -.LPCS0: - nop -#else - jsr @r1 - nop -#endif - /* Restore to keep CFI/CFA balanced. */ - lds.l @r15+, pr - cfi_adjust_cfa_offset (-4) - cfi_restore (pr) - /* If this returns (which can happen if the syscall fails) we'll exit - the program with the return error value (-1). */ - mov r0, r4 - -2: - mov.l .Lexit, r1 -#ifdef PIC - add r12, r1 -#endif - jsr @r1 - nop - /* The 'exit' call should never return. In case it does cause the - process to terminate. */ - ABORT_INSTRUCTION_ASM - - .align 2 -#ifdef PIC -.Lgot: - .long _GLOBAL_OFFSET_TABLE_ -.Lsetcontext: - .long __setcontext@PLT-(.LPCS0+2-(.)) -.Lexit: - .long HIDDEN_JUMPTARGET(exit)@GOTOFF -#else -.Lsetcontext: - .long __setcontext -.Lexit: - .long HIDDEN_JUMPTARGET(exit) -#endif -PSEUDO_END(__makecontext) - -weak_alias (__makecontext, makecontext) |