diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/sparc64/____longjmp_chk.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc64/____longjmp_chk.S | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/____longjmp_chk.S b/sysdeps/unix/sysv/linux/sparc/sparc64/____longjmp_chk.S deleted file mode 100644 index aff42306c9..0000000000 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/____longjmp_chk.S +++ /dev/null @@ -1,90 +0,0 @@ -/* Copyright (C) 2009-2017 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/>. */ - -/* longjmp is implemented in terms of the setcontext trap on Linux/Sparc64. */ - -#include <sysdep.h> - -/* Offsets into the jmp_buf structure. */ - -#define O_mask_was_saved 512 -#define O_gregs 32 -#define O_g1 (O_gregs + 4*8) -#define O_sp (O_gregs + 17*8) - -.section .rodata.str1.1,"aMS",@progbits,1 - .type longjmp_msg,@object -longjmp_msg: - .string "longjmp causes uninitialized stack frame" - .size longjmp_msg, .-longjmp_msg - - .text -ENTRY (____longjmp_chk) - ldx [%o0 + O_sp], %o2 - cmp %sp, %o2 - bleu,pt %xcc, .Lok - nop - - save %sp, -208, %sp - cfi_remember_state - cfi_def_cfa_register(%fp) - cfi_window_save - cfi_register(%o7, %i7) - add %fp, 2023, %o1 - clr %o0 - LOADSYSCALL(sigaltstack) - ta 0x6d - bcs,pn %xcc, .Lok2 - lduw [%fp + 2031], %l2 - andcc %l2, 0x1, %g0 - be,pn %xcc, .Lfail - ldx [%fp + 2023], %l0 - ldx [%fp + 2039], %l1 - sub %l0, STACK_BIAS, %l0 - add %l0, %l1, %l0 - sub %l0, %i2, %l0 - cmp %l0, %l1 - bgeu,pt %xcc, .Lok2 - nop - -.Lfail: -#ifndef PIC - sethi %hi(longjmp_msg), %o0 - or %o0, %lo(longjmp_msg), %o0 -#else - SETUP_PIC_REG(l7) - sethi %gdop_hix22(longjmp_msg), %o0 - xor %o0, %gdop_lox10(longjmp_msg), %o0 - ldx [%l7 + %o0], %o0, %gdop(longjmp_msg) -#endif - call HIDDEN_JUMPTARGET(__fortify_fail) - nop - -.Lok2: restore - cfi_restore_state - -.Lok: - /* Modify the context with the value we want to return. */ - movre %o1, 1, %o1 - stx %o1, [%o0 + O_g1] - - /* Let setcontext know if we want to modify the current sigmask. */ - ld [%o0 + O_mask_was_saved], %o1 - - /* And bamf back to where we belong! */ - ta 0x6f -END(____longjmp_chk) |