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2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
114 lines
2.8 KiB
ArmAsm
114 lines
2.8 KiB
ArmAsm
/* Copyright (C) 2009-2021 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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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <jmpbuf-offsets.h>
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#define ENV(base,reg) [%base + (reg * 4)]
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#define ST_FLUSH_WINDOWS 3
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.section .rodata.str1.1,"aMS",@progbits,1
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.type longjmp_msg,@object
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longjmp_msg:
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.string "longjmp causes uninitialized stack frame"
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.size longjmp_msg, .-longjmp_msg
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.text
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ENTRY (____longjmp_chk)
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ld ENV(o0,JB_SP), %g5
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#ifdef PTR_DEMANGLE
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PTR_DEMANGLE (%g5, %g5, %g4)
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#endif
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cmp %sp, %g5
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bleu .Lok_norestore
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nop
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save %sp, -80, %sp
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cfi_remember_state
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cfi_def_cfa_register(%fp)
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cfi_window_save
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cfi_register(%o7, %i7)
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clr %o0
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add %sp, 64, %o1
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LOADSYSCALL(sigaltstack)
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ta 0x10
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bcs .Lok
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ld [%sp + 64 + 4], %o2
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andcc %o2, 0x1, %g0
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be .Lfail
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ld [%sp + 64 + 0], %o0
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ld [%sp + 64 + 8], %o1
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add %o0, %o1, %o0
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sub %o0, %g5, %o0
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cmp %o0, %o1
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bgeu .Lok
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nop
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.Lfail:
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#ifndef PIC
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sethi %hi(longjmp_msg), %o0
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or %o0, %lo(longjmp_msg), %o0
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#else
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SETUP_PIC_REG(l7)
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sethi %gdop_hix22(longjmp_msg), %o0
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xor %o0, %gdop_lox10(longjmp_msg), %o0
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ld [%l7 + %o0], %o0, %gdop(longjmp_msg)
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#endif
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call HIDDEN_JUMPTARGET(__fortify_fail)
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nop
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.Lok:
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restore
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cfi_restore_state
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.Lok_norestore:
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ld ENV(o0,JB_FP), %g3 /* Cache target FP in register %g3. */
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#ifdef PTR_DEMANGLE
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PTR_DEMANGLE2 (%g3, %g3, %g4)
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#endif
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mov %o0, %g1 /* ENV in %g1 */
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orcc %o1, %g0, %g2 /* VAL in %g2 */
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be,a 0f /* Branch if zero; else skip delay slot. */
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mov 1, %g2 /* Delay slot only hit if zero: VAL = 1. */
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0:
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save %sp, -96, %sp
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/*
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* Do a "flush register windows trap". The trap handler in the
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* kernel writes all the register windows to their stack slots, and
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* marks them all as invalid (needing to be sucked up from the
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* stack when used). This ensures that all information needed to
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* unwind to these callers is in memory, not in the register
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* windows.
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*/
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ta ST_FLUSH_WINDOWS
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#ifdef PTR_DEMANGLE
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ld ENV(g1,JB_PC), %g1 /* Set return PC. */
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PTR_DEMANGLE2 (%i7, %g1, %g4)
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#else
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ld ENV(g1,JB_PC), %i7 /* Set return PC. */
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#endif
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mov %g5, %fp
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jmp %i7 + 8
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restore %g2, 0, %o0 /* Restore values from above register frame. */
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END(____longjmp_chk)
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