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77 lines
2.0 KiB
ArmAsm
77 lines
2.0 KiB
ArmAsm
/* Copyright (C) 2009-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <rtld-global-offsets.h>
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.section .rodata.str1.4,"aMS",@progbits,1
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.align 2
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.LC0:
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.string "longjmp causes uninitialized stack frame"
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.text
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#define __longjmp_symbol ____longjmp_chk
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#ifdef PIC
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# define LOAD_ARG \
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SETUP_GOT_ACCESS(r3,got_label2); \
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addis r3,r3,_GLOBAL_OFFSET_TABLE_-got_label2@ha; \
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addi r3,r3,_GLOBAL_OFFSET_TABLE_-got_label2@l; \
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lwz r3,.LC0@got(r3)
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#else
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# define LOAD_ARG \
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lis r3,.LC0@ha; \
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la r3,.LC0@l(r3)
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#endif
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#define CHECK_SP(reg) \
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cmplw reg, r1; \
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bge+ .Lok; \
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mflr r0; \
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stwu r1,-32(r1); \
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cfi_remember_state; \
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cfi_adjust_cfa_offset (32); \
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stw r0,36(r1); \
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cfi_offset (lr, 4); \
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mr r31,r3; \
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mr r30,r4; \
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li r3,0; \
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addi r4,r1,8; \
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li r0,__NR_sigaltstack; \
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sc; \
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/* Without working sigaltstack we cannot perform the test. */ \
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bso .Lok2; \
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lwz r0,12(r1); \
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andi. r3,r0,1; \
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beq .Lfail; \
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lwz r0,16(r1); \
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lwz r3,8(r1); \
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add r3,r3,r0; \
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sub r3,r3,reg; \
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cmplw r3,r0; \
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bge+ .Lok2; \
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.Lfail: \
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LOAD_ARG; \
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bl HIDDEN_JUMPTARGET (__fortify_fail); \
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.Lok2: \
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mr r3,r31; \
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mr r4,r30; \
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cfi_restore_state; \
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.Lok:
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#include <__longjmp-common.S>
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