diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S b/sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S deleted file mode 100644 index 179d43d372..0000000000 --- a/sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S +++ /dev/null @@ -1,88 +0,0 @@ -/* Copyright (C) 2009-2024 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 - <https://www.gnu.org/licenses/>. */ - -#include <sigaltstack-offsets.h> - - .section .rodata.str1.8,"aMS",@progbits,1 - .align 8 -.LC0: - .string "longjmp causes uninitialized stack frame" - - .section .sdata,"aws",@progbits - .align 8 - .type longjmp_msg,@object -longjmp_msg: - data8 .LC0 - .size longjmp_msg, .-longjmp_msg - -#define __longjmp ____longjmp_chk - -/* We use 32 bytes (rather than sizeof(stack_t)) so that we keep the stack - properly aligned. But we still want a sanity check to make sure 32 is - actually enough. */ -#define STACK_SPACE ((sizeSS + 31) & -32) - -/* Check the stack pointer held in the jumpbuf. Make sure it's in either the - current stack (r12) or in the signal stack. */ -#define CHECK_RSP \ - ld8 loc0 = [in0]; \ - ;; \ - /* First see if target stack is within current one. */ \ - cmp.ltu p0, p8 = loc0, r12; \ -(p8) br.cond.dptk.many .Lok; \ - \ - /* Check if it's an alternative signal stack. */ \ - mov out0 = r0; \ - add out1 = -STACK_SPACE, r12; \ - ;; \ - mov r12 = out1; \ - DO_CALL_VIA_BREAK (SYS_ify (sigaltstack)); \ - ;; \ - /* If the syscall failed, then assume it's OK. */ \ - cmp.eq p8, p0 = -1, r10; \ -(p8) br.cond.spnt .Lok; \ - /* Move stack_t into regs. */ \ - add r14 = oSS_FLAGS, r12; /* ss_flags */ \ - add r15 = oSS_SIZE, r12; /* ss_size */ \ - ld8 r16 = [r12]; /* ss_sp */ \ - ;; \ - ld4 r17 = [r14]; /* ss_flags */ \ - ld8 r18 = [r15]; /* ss_size */ \ - ;; \ - sub r19 = r16, r18; /* sp - size */ \ - /* See if we're currently on the altstack. */ \ - tbit.nz p0, p8 = r17, 0; /* SS_ONSTACK */ \ -(p8) br.cond.spnt .Lfail; \ - /* Verify target is within alternative stack. */ \ - cmp.gtu p7, p0 = loc0, r16; \ -(p7) br.cond.spnt .Lfail; \ - ;; \ - cmp.ltu p0, p8 = loc0, r19; \ -(p8) br.cond.sptk.many .Lok; \ - ;; \ - \ - /* Still here? Abort! */ \ -.Lfail: \ - add r12 = STACK_SPACE, r12; \ - addl loc0 = @ltoffx(longjmp_msg#), r1;; \ - ld8.mov loc0 = [loc0], longjmp_msg#;; \ - ld8 out0 = [loc0]; \ - br.call.sptk.many b0 = HIDDEN_JUMPTARGET(__fortify_fail)#;; \ -.Lok: \ - add r12 = STACK_SPACE, r12; - -#include "__longjmp.S" |