glibc/sysdeps/arm/__longjmp.S
Paul Eggert 5a82c74822 Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:

sed -ri '
  s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
  s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
  $(find $(git ls-files) -prune -type f \
      ! -name '*.po' \
      ! -name 'ChangeLog*' \
      ! -path COPYING ! -path COPYING.LIB \
      ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
      ! -path manual/texinfo.tex ! -path scripts/config.guess \
      ! -path scripts/config.sub ! -path scripts/install-sh \
      ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
      ! -path INSTALL ! -path  locale/programs/charmap-kw.h \
      ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
      ! '(' -name configure \
            -execdir test -f configure.ac -o -f configure.in ';' ')' \
      ! '(' -name preconfigure \
            -execdir test -f preconfigure.ac ';' ')' \
      -print)

and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:

  chmod a+x sysdeps/unix/sysv/linux/riscv/configure
  # Omit irrelevant whitespace and comment-only changes,
  # perhaps from a slightly-different Autoconf version.
  git checkout -f \
    sysdeps/csky/configure \
    sysdeps/hppa/configure \
    sysdeps/riscv/configure \
    sysdeps/unix/sysv/linux/csky/configure
  # Omit changes that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
  git checkout -f \
    sysdeps/powerpc/powerpc64/ppc-mcount.S \
    sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
  # Omit change that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
  git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 02:43:31 -07:00

122 lines
3.0 KiB
ArmAsm

/* longjmp for ARM.
Copyright (C) 1997-2019 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 <sysdep.h>
#include <stap-probe.h>
#include <bits/setjmp.h>
#include <rtld-global-offsets.h>
#include <arm-features.h>
/* __longjmp(jmpbuf, val) */
ENTRY (__longjmp)
mov ip, r0
#ifdef CHECK_SP
ldr r4, [ip] /* jmpbuf's sp */
cfi_undefined (r4)
#ifdef PTR_DEMANGLE
PTR_DEMANGLE (r4, r4, a3, a4)
#endif
CHECK_SP (r4)
#endif
#ifdef PTR_DEMANGLE
ldr a4, [ip], #4
PTR_DEMANGLE (a4, a4, a3, r4)
cfi_undefined (r4)
ldr r4, [ip], #4
PTR_DEMANGLE2 (r4, r4, a3)
#else
ldr a4, [ip], #4
ldr r4, [ip], #4
cfi_undefined (r4)
#endif
/* longjmp probe expects longjmp first argument (4@r0), second
argument (-4@r1), and target address (4@r4), respectively. */
LIBC_PROBE (longjmp, 3, 4@r0, -4@r1, 4@r4)
mov sp, a4
mov lr, r4
ldmia ip!, JMP_BUF_REGLIST
cfi_restore (v1)
cfi_restore (v2)
cfi_restore (v3)
cfi_restore (v4)
cfi_restore (v5)
cfi_restore (v6)
cfi_restore (sl)
cfi_restore (fp)
cfi_restore (sp)
cfi_restore (lr)
#if !defined ARM_ASSUME_NO_IWMMXT || defined __SOFTFP__
# define NEED_HWCAP 1
#endif
#ifdef NEED_HWCAP
# if IS_IN (rtld)
LDST_PCREL (ldr, a4, a3, \
C_SYMBOL_NAME(_rtld_local_ro) \
+ RTLD_GLOBAL_RO_DL_HWCAP_OFFSET)
# else
# ifdef SHARED
LDR_GLOBAL (a4, a3, C_SYMBOL_NAME(_rtld_global_ro), \
RTLD_GLOBAL_RO_DL_HWCAP_OFFSET)
# else
LDR_GLOBAL (a4, a3, C_SYMBOL_NAME(_dl_hwcap), 0)
# endif
# endif
#endif
#ifdef __SOFTFP__
tst a4, #HWCAP_ARM_VFP
beq .Lno_vfp
#endif
/* Restore the VFP registers. */
/* Following instruction is vldmia ip!, {d8-d15}. */
ldc p11, cr8, [r12], #64
.Lno_vfp:
#ifndef ARM_ASSUME_NO_IWMMXT
tst a4, #HWCAP_ARM_IWMMXT
beq .Lno_iwmmxt
/* Restore the call-preserved iWMMXt registers. */
/* Following instructions are wldrd wr10, [ip], #8 (etc.) */
ldcl p1, cr10, [r12], #8
ldcl p1, cr11, [r12], #8
ldcl p1, cr12, [r12], #8
ldcl p1, cr13, [r12], #8
ldcl p1, cr14, [r12], #8
ldcl p1, cr15, [r12], #8
.Lno_iwmmxt:
#endif
/* longjmp_target probe expects longjmp first argument (4@r0), second
argument (-4@r1), and target address (4@r14), respectively. */
LIBC_PROBE (longjmp_target, 3, 4@r0, -4@r1, 4@r14)
movs r0, r1 /* get the return value in place */
it eq
moveq r0, #1 /* can't let setjmp() return zero! */
DO_RET(lr)
END (__longjmp)