diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm/unwind-resume.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/arm/unwind-resume.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/unwind-resume.c b/sysdeps/unix/sysv/linux/arm/unwind-resume.c deleted file mode 100644 index 1a1e2df4b5..0000000000 --- a/sysdeps/unix/sysv/linux/arm/unwind-resume.c +++ /dev/null @@ -1,101 +0,0 @@ -/* Copyright (C) 2003-2015 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek <jakub@redhat.com>. - - 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 <dlfcn.h> -#include <stdio.h> -#include <unwind.h> - -static void (*libgcc_s_resume) (struct _Unwind_Exception *exc) - __attribute_used__; -static _Unwind_Reason_Code (*libgcc_s_personality) - (_Unwind_State, struct _Unwind_Exception *, struct _Unwind_Context *); - -static void init (void) __attribute_used__; - -static void -init (void) -{ - void *resume, *personality; - void *handle; - - handle = __libc_dlopen ("libgcc_s.so.1"); - - if (handle == NULL - || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL - || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL) - __libc_fatal ("libgcc_s.so.1 must be installed for pthread_cancel to work\n"); - - libgcc_s_resume = resume; - libgcc_s_personality = personality; -} - -/* It's vitally important that _Unwind_Resume not have a stack frame; the - ARM unwinder relies on register state at entrance. So we write this in - assembly. */ - -#define STR1(S) #S -#define STR(S) STR1(S) - -asm ( -" .globl _Unwind_Resume\n" -" .type _Unwind_Resume, %function\n" -"_Unwind_Resume:\n" -" .cfi_sections .debug_frame\n" -" " CFI_STARTPROC "\n" -" push {r4, r5, r6, lr}\n" -" " CFI_ADJUST_CFA_OFFSET (16)" \n" -" " CFI_REL_OFFSET (r4, 0) "\n" -" " CFI_REL_OFFSET (r5, 4) "\n" -" " CFI_REL_OFFSET (r6, 8) "\n" -" " CFI_REL_OFFSET (lr, 12) "\n" -" " CFI_REMEMBER_STATE "\n" -" ldr r4, 1f\n" -" ldr r5, 2f\n" -"3: add r4, pc, r4\n" -" ldr r3, [r4, r5]\n" -" mov r6, r0\n" -" cmp r3, #0\n" -" beq 4f\n" -"5: mov r0, r6\n" -" pop {r4, r5, r6, lr}\n" -" " CFI_ADJUST_CFA_OFFSET (-16) "\n" -" " CFI_RESTORE (r4) "\n" -" " CFI_RESTORE (r5) "\n" -" " CFI_RESTORE (r6) "\n" -" " CFI_RESTORE (lr) "\n" -" bx r3\n" -" " CFI_RESTORE_STATE "\n" -"4: bl init\n" -" ldr r3, [r4, r5]\n" -" b 5b\n" -" " CFI_ENDPROC "\n" -" .align 2\n" -"1: .word _GLOBAL_OFFSET_TABLE_ - 3b - " STR (PC_OFS) "\n" -"2: .word libgcc_s_resume(GOTOFF)\n" -" .size _Unwind_Resume, .-_Unwind_Resume\n" -); - -_Unwind_Reason_Code -__gcc_personality_v0 (_Unwind_State state, - struct _Unwind_Exception *ue_header, - struct _Unwind_Context *context) -{ - if (__builtin_expect (libgcc_s_personality == NULL, 0)) - init (); - return libgcc_s_personality (state, ue_header, context); -} |