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glibc/sysdeps/unix/sysv/linux/sh/sh4/swapcontext.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

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/* Save current context and install the given one.
Copyright (C) 2005-2019 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 "ucontext_i.h"
/* int __swapcontext (ucontext_t *ouc, const ucontext_t *uc); */
.text
.align 5
ENTRY(__swapcontext)
/* Return value of getcontext. R0 is the only register whose
value is not preserved. */
mov #0, r0
mov.l r0, @(oR0,r4)
mov.l r1, @(oR1,r4)
mov.l r2, @(oR2,r4)
mov.l r3, @(oR3,r4)
mov.l r4, @(oR4,r4)
mov.l r5, @(oR5,r4)
mov.l r6, @(oR6,r4)
mov.l r7, @(oR7,r4)
mov r4, r0
add #(oMACL+4), r0
sts.l macl, @-r0
sts.l mach, @-r0
stc.l gbr, @-r0
/* Save T flag to SR. */
movt r1
mov.l r1, @-r0
sts.l pr, @-r0
/* The return address of getcontext is the restart pc. */
sts.l pr, @-r0
mov.l r15, @-r0
mov.l r14, @-r0
mov.l r13, @-r0
mov.l r12, @-r0
mov.l r11, @-r0
mov.l r10, @-r0
mov.l r9, @-r0
mov.l r8, @-r0
#ifdef __SH_FPU_ANY__
mov r4, r0
/* We need 2 add instruction because oFPUL+4 >= 127. */
add #124,r0
add #(oFPUL+4-124),r0
sts.l fpul, @-r0
sts.l fpscr, @-r0
frchg
fmov.s fr15, @-r0
fmov.s fr14, @-r0
fmov.s fr13, @-r0
fmov.s fr12, @-r0
fmov.s fr11, @-r0
fmov.s fr10, @-r0
fmov.s fr9, @-r0
fmov.s fr8, @-r0
fmov.s fr7, @-r0
fmov.s fr6, @-r0
fmov.s fr5, @-r0
fmov.s fr4, @-r0
fmov.s fr3, @-r0
fmov.s fr2, @-r0
fmov.s fr1, @-r0
fmov.s fr0, @-r0
frchg
fmov.s fr15, @-r0
fmov.s fr14, @-r0
fmov.s fr13, @-r0
fmov.s fr12, @-r0
fmov.s fr11, @-r0
fmov.s fr10, @-r0
fmov.s fr9, @-r0
fmov.s fr8, @-r0
fmov.s fr7, @-r0
fmov.s fr6, @-r0
fmov.s fr5, @-r0
fmov.s fr4, @-r0
fmov.s fr3, @-r0
fmov.s fr2, @-r0
fmov.s fr1, @-r0
fmov.s fr0, @-r0
#endif /* __SH_FPU_ANY__ */
mov r5, r8
/* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, &ouc->uc_sigmask). */
mov #oSIGMASK, r1
extu.b r1, r1
add r1, r5
mov r4, r6
add r1, r6
mov #SIG_SETMASK, r4
mov #+SYS_ify(sigprocmask), r3
trapa #0x13
mov r0, r1
mov #-12, r2
shad r2, r1
not r1, r1 // r1=0 means r0 = -1 to -4095
tst r1, r1 // i.e. error in linux
bf .Lswapcontext_restore
.Lsyscall_error:
SYSCALL_ERROR_HANDLER
.Lpseudo_end:
rts
nop
.Lswapcontext_restore:
#ifdef __SH_FPU_ANY__
mov r8, r0
add #(oFR0),r0
fmov.s @r0+, fr0
fmov.s @r0+, fr1
fmov.s @r0+, fr2
fmov.s @r0+, fr3
fmov.s @r0+, fr4
fmov.s @r0+, fr5
fmov.s @r0+, fr6
fmov.s @r0+, fr7
fmov.s @r0+, fr8
fmov.s @r0+, fr9
fmov.s @r0+, fr10
fmov.s @r0+, fr11
fmov.s @r0+, fr12
fmov.s @r0+, fr13
fmov.s @r0+, fr14
fmov.s @r0+, fr15
frchg
fmov.s @r0+, fr0
fmov.s @r0+, fr1
fmov.s @r0+, fr2
fmov.s @r0+, fr3
fmov.s @r0+, fr4
fmov.s @r0+, fr5
fmov.s @r0+, fr6
fmov.s @r0+, fr7
fmov.s @r0+, fr8
fmov.s @r0+, fr9
fmov.s @r0+, fr10
fmov.s @r0+, fr11
fmov.s @r0+, fr12
fmov.s @r0+, fr13
fmov.s @r0+, fr14
fmov.s @r0+, fr15
frchg
lds.l @r0+, fpscr
lds.l @r0+, fpul
#endif /* __SH_FPU_ANY__ */
mov r8, r0
add #(oPC), r0
mov.l @r0+, r2
lds.l @r0+, pr
/* Restore T frag. */
mov.l @r0+, r1
shlr r1
/* Skip GBR which is used for thread pointer. */
add #4, r0
lds.l @r0+, mach
lds.l @r0+, macl
mov r8, r0
add #(oR9), r0
mov.l @r0+, r9
mov.l @r0+, r10
mov.l @r0+, r11
mov.l @r0+, r12
mov.l @r0+, r13
mov.l @r0+, r14
mov.l @r0+, r15
mov r8, r0
mov.l @(oR0,r0), r1
mov.l r1, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r1, 0)
mov.l r2, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r2, 0)
mov.l @(oR1,r0), r1
mov.l @(oR2,r0), r2
mov.l @(oR3,r0), r3
mov.l @(oR4,r0), r4
mov.l @(oR5,r0), r5
mov.l @(oR6,r0), r6
mov.l @(oR7,r0), r7
mov.l @(oR8,r0), r8
mov.l @r15+, r0
cfi_adjust_cfa_offset(-4)
jmp @r0
mov.l @r15+, r0
PSEUDO_END(__swapcontext)
weak_alias (__swapcontext, swapcontext)
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