H.J. Lu
0c5b8b5941
Add INLINE_SYSCALL_RETURN/INLINE_SYSCALL_ERROR_RETURN
...
For ia32 PIC, the first thing of many syscalls does is to call
__x86.get_pc_thunk.reg to load PC into reg in case there is an error,
which is required for setting errno. In most cases, there are no
errors. But we still call __x86.get_pc_thunk.reg. This patch adds
INLINE_SYSCALL_RETURN and INLINE_SYSCALL_ERROR_RETURN so that i386
can optimize setting errno by branching to the internal __syscall_error
without PLT.
INLINE_SYSCALL_ERROR_RETURN is designed to take the negative error
number returned from the majority of Linux kernels for which negating
is a no-op with INTERNAL_SYSCALL_ERRNO.
With i386 INLINE_SYSCALL_RETURN, INLINE_SYSCALL_ERROR_RETURN and
i386 syscall inlining optimization for GCC 5, for
sysdeps/unix/sysv/linux/fchmodat.c with -O2 -march=i686
-mtune=generic, GCC 5.2 now generates:
<fchmodat>:
0: push %ebx
1: mov 0x14(%esp),%eax
5: mov 0x8(%esp),%ebx
9: mov 0xc(%esp),%ecx
d: mov 0x10(%esp),%edx
11: test $0xfffffeff,%eax
16: jne 38 <fchmodat+0x38>
18: test $0x1,%ah
1b: jne 48 <fchmodat+0x48>
1d: mov $0x132,%eax
22: call *%gs:0x10
29: cmp $0xfffff000,%eax
2e: ja 58 <fchmodat+0x58>
30: pop %ebx
31: ret
32: lea 0x0(%esi),%esi
38: pop %ebx
39: mov $0xffffffea,%eax
3e: jmp 3f <fchmodat+0x3f> 3f: R_386_PC32 __syscall_error
43: nop
44: lea 0x0(%esi,%eiz,1),%esi
48: pop %ebx
49: mov $0xffffffa1,%eax
4e: jmp 4f <fchmodat+0x4f> 4f: R_386_PC32 __syscall_error
53: nop
54: lea 0x0(%esi,%eiz,1),%esi
58: pop %ebx
59: jmp 5a <fchmodat+0x5a> 5a: R_386_PC32 __syscall_error
instead of
<fchmodat>:
0: sub $0x8,%esp
3: mov 0x18(%esp),%eax
7: mov %ebx,(%esp)
a: call b <fchmodat+0xb> b: R_386_PC32 __x86.get_pc_thunk.bx
f: add $0x2,%ebx 11: R_386_GOTPC _GLOBAL_OFFSET_TABLE_
15: mov %edi,0x4(%esp)
19: test $0xfffffeff,%eax
1e: jne 70 <fchmodat+0x70>
20: test $0x1,%ah
23: jne 88 <fchmodat+0x88>
25: mov 0x14(%esp),%edx
29: mov 0x10(%esp),%ecx
2d: mov 0xc(%esp),%edi
31: xchg %ebx,%edi
33: mov $0x132,%eax
38: call *%gs:0x10
3f: xchg %edi,%ebx
41: cmp $0xfffff000,%eax
46: ja 58 <fchmodat+0x58>
48: mov (%esp),%ebx
4b: mov 0x4(%esp),%edi
4f: add $0x8,%esp
52: ret
53: nop
54: lea 0x0(%esi,%eiz,1),%esi
58: mov 0x0(%ebx),%edx 5a: R_386_TLS_GOTIE __libc_errno
5e: neg %eax
60: mov %eax,%gs:(%edx)
63: mov $0xffffffff,%eax
68: jmp 48 <fchmodat+0x48>
6a: lea 0x0(%esi),%esi
70: mov 0x0(%ebx),%eax 72: R_386_TLS_GOTIE __libc_errno
76: movl $0x16,%gs:(%eax)
7d: mov $0xffffffff,%eax
82: jmp 48 <fchmodat+0x48>
84: lea 0x0(%esi,%eiz,1),%esi
88: mov 0x0(%ebx),%eax 8a: R_386_TLS_GOTIE __libc_errno
8e: movl $0x5f,%gs:(%eax)
95: mov $0xffffffff,%eax
9a: jmp 48 <fchmodat+0x48>
* sysdeps/unix/sysdep.h (INLINE_SYSCALL_RETURN): New.
(INLINE_SYSCALL_ERROR_RETURN): Likewise.
* sysdeps/unix/sysv/linux/adjtime.c (ADJTIME): Use
INLINE_SYSCALL_RETURN and INLINE_SYSCALL_ERROR_RETURN.
* sysdeps/unix/sysv/linux/aio_sigqueue.c (__aio_sigqueue):
Likewise.
* sysdeps/unix/sysv/linux/dl-openat64.c (openat64): Likewise.
* sysdeps/unix/sysv/linux/eventfd.c (eventfd): Likewise.
* sysdeps/unix/sysv/linux/faccessat.c (faccessat): Likewise.
* sysdeps/unix/sysv/linux/fchmodat.c (fchmodat): Likewise.
* sysdeps/unix/sysv/linux/fcntl.c (do_fcntl): Likewise.
* sysdeps/unix/sysv/linux/fstatfs64.c (__fstatfs64): Likewise.
* sysdeps/unix/sysv/linux/ftruncate64.c (__ftruncate64): Likewise.
* sysdeps/unix/sysv/linux/futimens.c (futimens): Likewise.
* sysdeps/unix/sysv/linux/futimes.c (__futimes): Likewise.
* sysdeps/unix/sysv/linux/futimesat.c (futimesat): Likewise.
* sysdeps/unix/sysv/linux/fxstat.c (__fxstat): Likewise.
* sysdeps/unix/sysv/linux/fxstat64.c (___fxstat64): Likewise.
* sysdeps/unix/sysv/linux/fxstatat.c (__fxstatat): Likewise.
* sysdeps/unix/sysv/linux/fxstatat64.c (__fxstatat64): Likewise.
* sysdeps/unix/sysv/linux/gai_sigqueue.c (__gai_sigqueue):
Likewise.
* sysdeps/unix/sysv/linux/getpriority.c (__getpriority): Likewise.
* sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64): Likewise.
* sysdeps/unix/sysv/linux/llseek.c (__llseek): Likewise.
* sysdeps/unix/sysv/linux/lutimes.c (lutimes): Likewise.
* sysdeps/unix/sysv/linux/lxstat.c (__lxstat): Likewise.
* sysdeps/unix/sysv/linux/lxstat64.c (___lxstat64): Likewise.
* sysdeps/unix/sysv/linux/mmap64.c (__mmap64): Likewise.
* sysdeps/unix/sysv/linux/mq_close.c (mq_close): Likewise.
* sysdeps/unix/sysv/linux/mq_open.c (__mq_open): Likewise.
* sysdeps/unix/sysv/linux/mq_unlink.c (mq_unlink): Likewise.
* sysdeps/unix/sysv/linux/msgget.c (msgget): Likewise.
* sysdeps/unix/sysv/linux/prlimit.c (prlimit): Likewise.
* sysdeps/unix/sysv/linux/pt-raise.c (raise): Likewise.
* sysdeps/unix/sysv/linux/raise.c (raise): Likewise.
* sysdeps/unix/sysv/linux/readahead.c (__readahead): Likewise.
* sysdeps/unix/sysv/linux/reboot.c (reboot): Likewise.
* sysdeps/unix/sysv/linux/semget.c (semget): Likewise.
* sysdeps/unix/sysv/linux/semop.c (semop): Likewise.
* sysdeps/unix/sysv/linux/semtimedop.c (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/setrlimit64.c (setrlimit64): Likewise.
* sysdeps/unix/sysv/linux/shmat.c (shmat): Likewise.
* sysdeps/unix/sysv/linux/shmdt.c (shmdt): Likewise.
* sysdeps/unix/sysv/linux/shmget.c (shmget): Likewise.
* sysdeps/unix/sysv/linux/signalfd.c (signalfd): Likewise.
* sysdeps/unix/sysv/linux/sigpending.c (sigpending): Likewise.
* sysdeps/unix/sysv/linux/sigprocmask.c ( __sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/sigqueue.c (__sigqueue): Likewise.
* sysdeps/unix/sysv/linux/speed.c (cfsetospeed): Likewise.
* sysdeps/unix/sysv/linux/statfs64.c (__statfs64): Likewise.
* sysdeps/unix/sysv/linux/sysctl.c (__sysctl): Likewise.
* sysdeps/unix/sysv/linux/tcsendbrk.c (tcsendbreak): Likewise.
* sysdeps/unix/sysv/linux/tcsetattr.c (tcsetattr): Likewise.
* sysdeps/unix/sysv/linux/timer_getoverr.c (timer_getoverrun):
Likewise.
* sysdeps/unix/sysv/linux/timer_gettime.c (timer_gettime):
Likewise.
* sysdeps/unix/sysv/linux/timer_settime.c (timer_settime):
Likewise.
* sysdeps/unix/sysv/linux/truncate64.c (truncate64): Likewise.
* sysdeps/unix/sysv/linux/ustat.c (ustat): Likewise.
* sysdeps/unix/sysv/linux/utimensat.c (utimensat): Likewise.
* sysdeps/unix/sysv/linux/utimes.c (__utimes): Likewise.
* sysdeps/unix/sysv/linux/xmknod.c (__xmknod): Likewise.
* sysdeps/unix/sysv/linux/xmknodat.c (__xmknodat): Likewise.
* sysdeps/unix/sysv/linux/xstat.c (__xstat): Likewise.
* sysdeps/unix/sysv/linux/xstat64.c (___xstat64): Likewise.
* sysdeps/unix/sysv/linux/xstatconv.c (__xstat_conv): Likewise.
(__xstat64_conv): Likewise.
(__xstat32_conv): Likewise.
* sysdeps/unix/sysv/linux/sched_getaffinity.c
(__sched_getaffinity_new): Add libc_hidden_proto and
libc_hidden_def. Use INLINE_SYSCALL_ERROR_RETURN.
2015-08-21 04:46:53 -07:00
Ulrich Drepper
4a244f0dce
Update.
...
2003-09-02 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/alpha/Makefile (sysdep_routines): Remove
rt_sigsuspend, rt_sigprocmask, rt_sigtimedwait, rt_sigqueueinfo and
rt_sigpending.
* sysdeps/unix/sysv/linux/alpha/sigaction.c (__syscall_rt_sigaction):
New prototype.
* sysdeps/unix/sysv/linux/arm/syscalls.list (__syscall_*): Remove
unused __syscall_ stubs.
* sysdeps/unix/sysv/linux/arm/Makefile (sysdep_routines): Remove
rt_*.
* sysdeps/unix/sysv/linux/cris/Makefile: Removed.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
(__syscall_recvfrom, __syscall_sendto): Remove unused aliases.
* sysdeps/unix/sysv/linux/mips/syscalls.list (__syscall_*): Remove
unused __syscall_ stubs.
* sysdeps/unix/sysv/linux/mips/Makefile (sysdep_routines): Remove rt_*.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
(__syscall_*): Remove unused __syscall_ stubs.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/syscalls.list
(__syscall_*): Likewise.
* sysdeps/unix/sysv/linux/powerpc/Makefile (sysdep_routines): Remove
rt_*.
* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (__syscall_*):
Remove unused __syscall_ stubs.
* sysdeps/unix/sysv/linux/sh/Makefile (sysdep_routines): Remove rt_*.
* sysdeps/unix/sysv/linux/rt_sigaction.c: Removed.
* sysdeps/unix/sysv/linux/rt_sigpending.c: Removed.
* sysdeps/unix/sysv/linux/rt_sigprocmask.c: Removed.
* sysdeps/unix/sysv/linux/rt_sigqueueinfo.c: Removed.
* sysdeps/unix/sysv/linux/rt_sigreturn.c: Removed.
* sysdeps/unix/sysv/linux/rt_sigsuspend.c: Removed.
* sysdeps/unix/sysv/linux/rt_sigtimedwait.c: Removed.
* sysdeps/unix/sysv/linux/s_pread64.c: Removed.
* sysdeps/unix/sysv/linux/s_pwrite64.c: Removed.
* sysdeps/unix/sysv/linux/alpha/gethostname.c: Remove unused
__syscall_* prototypes.
* sysdeps/unix/sysv/linux/alpha/ipc_priv.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/msgctl.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/semctl.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/shmctl.c: Likewise.
* sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/i386/chown.c: Likewise.
* sysdeps/unix/sysv/linux/i386/fchown.c: Likewise.
* sysdeps/unix/sysv/linux/i386/fcntl.c: Likewise.
* sysdeps/unix/sysv/linux/i386/fxstat.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getegid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/geteuid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setuid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getgid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getgroups.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getmsg.c: Likewise.
* sysdeps/unix/sysv/linux/i386/xstat.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getresgid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getresuid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getrlimit.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getuid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/lchown.c: Likewise.
* sysdeps/unix/sysv/linux/i386/lockf64.c: Likewise.
* sysdeps/unix/sysv/linux/i386/lxstat.c: Likewise.
* sysdeps/unix/sysv/linux/i386/putmsg.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setfsgid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setfsuid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setgid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setgroups.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setregid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setresgid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setresuid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setreuid.c: Likewise.
* sysdeps/unix/sysv/linux/i386/setrlimit.c: Likewise.
* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/fxstat.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/lxstat.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/sigpending.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/sigprocmask.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/sigsuspend.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/xstat.c: Likewise.
* sysdeps/unix/sysv/linux/m68k/chown.c: Likewise.
* sysdeps/unix/sysv/linux/mips/ftruncate64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pread.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/ptrace.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/mips/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/mips/truncate64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/ustat.c: Likewise.
* sysdeps/unix/sysv/linux/mips/xmknod.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/ioctl.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/chown.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/lchown.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/xstat.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/fxstat.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/lxstat.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigpending.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigprocmask.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigsuspend.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigpending.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigprocmask.c: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/execve.c: Likewise.
* sysdeps/unix/sysv/linux/aio_sigqueue.c: Likewise.
* sysdeps/unix/sysv/linux/reboot.c: Likewise.
* sysdeps/unix/sysv/linux/_exit.c: Likewise.
* sysdeps/unix/sysv/linux/ftruncate64.c: Likewise.
* sysdeps/unix/sysv/linux/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/fxstat64.c: Likewise.
* sysdeps/unix/sysv/linux/gai_sigqueue.c: Likewise.
* sysdeps/unix/sysv/linux/readahead.c: Likewise.
* sysdeps/unix/sysv/linux/getcwd.c: Likewise.
* sysdeps/unix/sysv/linux/sigwait.c: Likewise.
* sysdeps/unix/sysv/linux/getdents.c: Likewise.
* sysdeps/unix/sysv/linux/readv.c: Likewise.
* sysdeps/unix/sysv/linux/getpriority.c: Likewise.
* sysdeps/unix/sysv/linux/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/ipc_priv.h: Likewise.
* sysdeps/unix/sysv/linux/llseek.c: Likewise.
* sysdeps/unix/sysv/linux/sysctl.c: Likewise.
* sysdeps/unix/sysv/linux/lxstat64.c: Likewise.
* sysdeps/unix/sysv/linux/mmap64.c: Likewise.
* sysdeps/unix/sysv/linux/ustat.c: Likewise.
* sysdeps/unix/sysv/linux/poll.c: Likewise.
* sysdeps/unix/sysv/linux/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/writev.c: Likewise.
* sysdeps/unix/sysv/linux/pread.c: Likewise.
* sysdeps/unix/sysv/linux/ptrace.c: Likewise.
* sysdeps/unix/sysv/linux/sigpending.c: Likewise.
* sysdeps/unix/sysv/linux/sigprocmask.c: Likewise.
* sysdeps/unix/sysv/linux/sigqueue.c: Likewise.
* sysdeps/unix/sysv/linux/sigsuspend.c: Likewise.
* sysdeps/unix/sysv/linux/sigtimedwait.c: Likewise.
* sysdeps/unix/sysv/linux/sigwaitinfo.c: Likewise.
* sysdeps/unix/sysv/linux/truncate64.c: Likewise.
* sysdeps/unix/sysv/linux/xmknod.c: Likewise.
* sysdeps/unix/sysv/linux/xstat64.c: Likewise.
2003-09-02 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/i386/sysdep.h (PSEUDO): Revert last change.
* sysdeps/unix/sysv/linux/powerpc/syscalls.list: New file.
* sysdeps/unix/sysv/linux/sparc/syscalls.list: New file.
* stdio-common/Makefile (CFLAGS-vprintf.c): Add -fexceptions.
* intl/loadmsgcat.c: For _LIBC, call not cancelable versions of
open, close, and read.
2003-09-03 03:22:23 +00:00