diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm/setcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/setcontext.S | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/setcontext.S b/sysdeps/unix/sysv/linux/arm/setcontext.S deleted file mode 100644 index db6aebfbd4..0000000000 --- a/sysdeps/unix/sysv/linux/arm/setcontext.S +++ /dev/null @@ -1,111 +0,0 @@ -/* Copyright (C) 2012-2017 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/>. */ - -/* ??? Needs more rearrangement for the LDM to handle thumb mode. */ -#define NO_THUMB -#include <sysdep.h> -#include <rtld-global-offsets.h> - -#include "ucontext_i.h" - - .syntax unified - .text - -/* int setcontext (const ucontext_t *ucp) */ - -ENTRY(__setcontext) - mov r4, r0 - add r0, r0, #UCONTEXT_REGSPACE - - /* Restore the VFP registers. Copied from arm/__longjmp.S. */ -#ifdef PIC - ldr r2, 1f - ldr r1, .Lrtld_global_ro -0: add r2, pc, r2 - ldr r2, [r2, r1] - ldr r2, [r2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET] -#else - ldr r2, .Lhwcap - ldr r2, [r2, #0] -#endif - -#ifdef __SOFTFP__ - tst r2, #HWCAP_ARM_VFP - beq .Lno_vfp_sc -#endif - - /* Following instruction is vldmia r0!, {d8-d15}. */ - ldc p11, cr8, [r0], #64 - /* Restore the floating-point status register. */ - ldr r1, [r0], #4 - /* Following instruction is fmxr fpscr, r1. */ - mcr p10, 7, r1, cr1, cr0, 0 -.Lno_vfp_sc: - tst r2, #HWCAP_ARM_IWMMXT - beq .Lno_iwmmxt_sc - - /* Restore the call-preserved iWMMXt registers. */ - /* Following instructions are wldrd wr10, [r0], #8 (etc.) */ - ldcl p1, cr10, [r0], #8 - ldcl p1, cr11, [r0], #8 - ldcl p1, cr12, [r0], #8 - ldcl p1, cr13, [r0], #8 - ldcl p1, cr14, [r0], #8 - ldcl p1, cr15, [r0], #8 -.Lno_iwmmxt_sc: - - /* Now bring back the signal status. */ - mov r0, #SIG_SETMASK - add r1, r4, #UCONTEXT_SIGMASK - mov r2, #0 - bl PLTJMP(__sigprocmask) - - /* Loading r0-r3 makes makecontext easier. */ - add r14, r4, #MCONTEXT_ARM_R0 - ldmia r14, {r0-r12} - ldr r13, [r14, #(MCONTEXT_ARM_SP - MCONTEXT_ARM_R0)] - add r14, r14, #(MCONTEXT_ARM_LR - MCONTEXT_ARM_R0) - ldmia r14, {r14, pc} - -END(setcontext) -weak_alias(__setcontext, setcontext) - - /* Called when a makecontext() context returns. Start the - context in R4 or fall through to exit(). */ - /* Unwind descriptors are looked up based on PC - 2, so we have to - make sure to mark the instruction preceding the __startcontext - label as .cantunwind. */ - .fnstart - .cantunwind - nop -ENTRY(__startcontext) - movs r0, r4 - bne PLTJMP(__setcontext) - - @ New context was 0 - exit - b PLTJMP(HIDDEN_JUMPTARGET(exit)) - .fnend -END(__startcontext) - -#ifdef PIC -1: .long _GLOBAL_OFFSET_TABLE_ - 0b - PC_OFS -.Lrtld_global_ro: - .long C_SYMBOL_NAME(_rtld_global_ro)(GOT) -#else -.Lhwcap: - .long C_SYMBOL_NAME(_dl_hwcap) -#endif |