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author | Florian Weimer <fweimer@redhat.com> | 2022-05-04 15:37:21 +0200 |
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committer | Florian Weimer <fweimer@redhat.com> | 2022-05-04 15:37:21 +0200 |
commit | 60f0f2130d30cfd008ca39743027f1e200592dff (patch) | |
tree | 1c4f8ead32c821c8b70cbc6ea71687e1976976d6 /sysdeps/unix/sysv/linux/i386/libc-do-syscall-int80.S | |
parent | 6e5c7a1e262961adb52443ab91bd2c9b72316402 (diff) | |
download | glibc-60f0f2130d30cfd008ca39743027f1e200592dff.tar.gz glibc-60f0f2130d30cfd008ca39743027f1e200592dff.tar.xz glibc-60f0f2130d30cfd008ca39743027f1e200592dff.zip |
i386: Honor I386_USE_SYSENTER for 6-argument Linux system calls
Introduce an int-80h-based version of __libc_do_syscall and use it if I386_USE_SYSENTER is defined as 0. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/libc-do-syscall-int80.S')
-rw-r--r-- | sysdeps/unix/sysv/linux/i386/libc-do-syscall-int80.S | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/libc-do-syscall-int80.S b/sysdeps/unix/sysv/linux/i386/libc-do-syscall-int80.S new file mode 100644 index 0000000000..2c472f2557 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/libc-do-syscall-int80.S @@ -0,0 +1,25 @@ +/* Out-of-line syscall stub for six-argument syscalls from C. For static PIE. + Copyright (C) 2022 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/>. */ + +#ifndef SHARED +# define I386_USE_SYSENTER 0 +# include <sysdep.h> + +# define __libc_do_syscall __libc_do_syscall_int80 +# include "libc-do-syscall.S" +#endif |