diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/gettimeofday.S')
-rw-r--r-- | sysdeps/unix/sysv/linux/alpha/gettimeofday.S | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/gettimeofday.S b/sysdeps/unix/sysv/linux/alpha/gettimeofday.S new file mode 100644 index 0000000..bceeefc --- /dev/null +++ b/sysdeps/unix/sysv/linux/alpha/gettimeofday.S @@ -0,0 +1,102 @@ +/* Copyright (C) 1998 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sysdep.h> +#define _ERRNO_H 1 +#include <bits/errno.h> + +/* The problem here is that initially we made struct timeval compatible with + OSF/1, using int32. But we defined time_t with uint64, and later found + that POSIX requires tv_sec to be time_t. + + So now we have to do compatibility stuff. */ + +/* The variable is shared between all wrappers around signal handling + functions which have RT equivalents. */ +.comm __libc_missing_axp_tv64, 4 + +.text + +LEAF(__gettimeofday_tv64, 16) + ldgp gp, 0(pv) + subq sp, 16, sp +#ifdef PROF + .set noat + lda AT, _mcount + jsr AT, (AT), _mcount + .set at +#endif + .prologue 1 + + ldl t0, __libc_missing_axp_tv64 + + /* Save arguments in case we do need to fall back. */ + stq a0, 0(sp) + stq a1, 8(sp) + + bne t0, $do32 + + ldi v0, SYS_ify(gettimeofday) + callsys + bne a3, $err64 + + /* Everything ok. */ + addq sp, 16, sp + ret + + /* If we didn't get ENOSYS, it is a real error. */ + .align 3 +$err64: cmpeq v0, ENOSYS, t0 + bne t0, $error + stl t0, __libc_missing_axp_tv64 + + /* Recover the saved arguments. */ + ldq a1, 8(sp) + ldq a0, 0(sp) + + .align 3 +$do32: ldi v0, SYS_ify(osf_gettimeofday) + callsys + bne a3, $error + + /* Copy back to proper format. */ + ldq a0, 0(sp) + beq a0, 2f + ldl t0, 0(a0) + ldl t1, 4(a0) + stq t0, 0(a0) + stq t1, 0(a0) + +2: addq sp, 16, sp + ret + + .align 3 +$error: + lda pv, __syscall_error + addq sp, 16, sp + jmp zero, (pv), __syscall_error + +END(__gettimeofday_tv64) + +default_symbol_version (__gettimeofday_tv64, __gettimeofday, GLIBC_2.1) + +/* It seems to me to be a misfeature of the assembler that we can only + have one version-alias per symbol. So create an alias ourselves. + The 'p' is for 'public'. *Shrug* */ +strong_alias (__gettimeofday_tv64, __gettimeofday_tv64p) +default_symbol_version (__gettimeofday_tv64p, gettimeofday, GLIBC_2.1) |