glibc/sysdeps/x86_64/_mcount.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

126 lines
3.5 KiB
ArmAsm

/* Machine-specific calling sequence for `mcount' profiling function. x86-64 version.
Copyright (C) 2002-2019 Free Software Foundation, Inc.
Contributed by Andreas Jaeger <aj@suse.de>.
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/>. */
/* Assembly stub to invoke _mcount(). Compiler generated code calls
this stub after executing a function's prologue and without saving any
registers. It is therefore necessary to preserve %rcx, %rdx, %rsi, %rdi,
%r8, %r9 as they may contain function arguments. */
#include <sysdep.h>
ENTRY(_mcount)
/* Allocate space for 7 registers. */
subq $56,%rsp
cfi_adjust_cfa_offset (56)
movq %rax,(%rsp)
cfi_rel_offset (rax, 0)
movq %rcx,8(%rsp)
cfi_rel_offset (rcx, 8)
movq %rdx,16(%rsp)
cfi_rel_offset (rdx, 16)
movq %rsi,24(%rsp)
cfi_rel_offset (rsi, 24)
movq %rdi,32(%rsp)
cfi_rel_offset (rdi, 32)
movq %r8,40(%rsp)
cfi_rel_offset (r8, 40)
movq %r9,48(%rsp)
cfi_rel_offset (r9, 48)
/* Setup parameter for __mcount_internal. */
/* selfpc is the return address on the stack. */
movq 56(%rsp),%rsi
/* Get frompc via the frame pointer. */
movq 8(%rbp),%rdi
call C_SYMBOL_NAME(__mcount_internal)
/* Pop the saved registers. Please note that `mcount' has no
return value. */
movq 48(%rsp),%r9
cfi_restore (r9)
movq 40(%rsp),%r8
cfi_restore (r8)
movq 32(%rsp),%rdi
cfi_restore (rdi)
movq 24(%rsp),%rsi
cfi_restore (rsi)
movq 16(%rsp),%rdx
cfi_restore (rdx)
movq 8(%rsp),%rcx
cfi_restore (rcx)
movq (%rsp),%rax
cfi_restore (rax)
addq $56,%rsp
cfi_adjust_cfa_offset (-56)
ret
END(_mcount)
#undef mcount
weak_alias (_mcount, mcount)
/* __fentry__ is different from _mcount in that it is called before
function prolog. This means (among other things) that it has non-standard
stack alignment on entry: (%RSP & 0xF) == 0. */
ENTRY(__fentry__)
/* Allocate space for 7 registers
(+8 bytes for proper stack alignment). */
subq $64,%rsp
cfi_adjust_cfa_offset (64)
movq %rax,(%rsp)
cfi_rel_offset (rax, 0)
movq %rcx,8(%rsp)
cfi_rel_offset (rcx, 8)
movq %rdx,16(%rsp)
cfi_rel_offset (rdx, 16)
movq %rsi,24(%rsp)
cfi_rel_offset (rsi, 24)
movq %rdi,32(%rsp)
cfi_rel_offset (rdi, 32)
movq %r8,40(%rsp)
cfi_rel_offset (r8, 40)
movq %r9,48(%rsp)
cfi_rel_offset (r9, 48)
/* Setup parameter for __mcount_internal. */
/* selfpc is the return address on the stack. */
movq 64(%rsp),%rsi
/* caller is the return address above it */
movq 72(%rsp),%rdi
call C_SYMBOL_NAME(__mcount_internal)
/* Pop the saved registers. Please note that `__fentry__' has no
return value. */
movq 48(%rsp),%r9
cfi_restore (r9)
movq 40(%rsp),%r8
cfi_restore (r8)
movq 32(%rsp),%rdi
cfi_restore (rdi)
movq 24(%rsp),%rsi
cfi_restore (rsi)
movq 16(%rsp),%rdx
cfi_restore (rdx)
movq 8(%rsp),%rcx
cfi_restore (rcx)
movq (%rsp),%rax
cfi_restore (rax)
addq $64,%rsp
cfi_adjust_cfa_offset (-64)
ret
END(__fentry__)