diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/select.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/alpha/select.S | 99 |
1 files changed, 97 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/select.S b/sysdeps/unix/sysv/linux/alpha/select.S index 7d5282d621..9cfd63ff93 100644 --- a/sysdeps/unix/sysv/linux/alpha/select.S +++ b/sysdeps/unix/sysv/linux/alpha/select.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 2002 Free Software Foundation, Inc. +/* Copyright (C) 1998, 2002, 2003 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 @@ -16,7 +16,7 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -#include <sysdep.h> +#include <sysdep-cancel.h> #define _ERRNO_H 1 #include <bits/errno.h> @@ -49,12 +49,20 @@ LEAF(SELECT, 64) #endif .prologue 1 +#ifdef CENABLE + SINGLE_THREAD_P (t1) +#else ldl t0, __libc_missing_axp_tv64 +#endif /* Save timeout early, since we'll need to recover this after the system call. */ stq a4, 48(sp) +#ifdef CENABLE + bne t1, $do_cancel +#endif + bne t0, $do32 /* Save arguments in case we do need to fall back. */ @@ -109,6 +117,93 @@ $do32: 2: addq sp, 64, sp ret +#ifdef CENABLE + .align 3 +$do_cancel: + /* Save arguments. */ + stq a0, 8(sp) + stq a1, 16(sp) + stq a2, 24(sp) + stq a3, 32(sp) + stq ra, 40(sp) + + CENABLE + + ldl t0, __libc_missing_axp_tv64 + bne t0, $do_cancel32 + + /* Recover the saved arguments. */ + ldq a4, 48(sp) + ldq a3, 32(sp) + ldq a2, 24(sp) + ldq a1, 16(sp) + ldq a0, 8(sp) + + ldi v0, SYS_ify(select) + callsys + bne a3, $cancel_err64 + + stq v0, 8(sp) + CDISABLE + ldq v0, 8(sp) + ldq ra, 40(sp) + + /* Everything ok. */ + addq sp, 64, sp + ret + + /* If we didn't get ENOSYS, it is a real error. */ + .align 3 +$cancel_err64: + cmpeq v0, ENOSYS, t0 + beq t0, $cancel_error + stl t0, __libc_missing_axp_tv64 + + /* Recover the saved arguments. */ + .align 3 +$do_cancel32: + ldq a4, 48(sp) + ldq a3, 32(sp) + ldq a2, 24(sp) + ldq a1, 16(sp) + ldq a0, 8(sp) + + /* If the timeout argument is present bounce to the smaller fmt. */ + beq a4, 1f + ldq t0, 0(a4) + ldq t1, 8(a4) + stl t0, 0(sp) + stl t1, 4(sp) + mov sp, a4 + +1: ldi v0, SYS_ify(osf_select) + callsys + bne a3, $cancel_error + + /* ... and bounce the remaining timeout back. */ + ldq a4, 48(sp) + beq a4, 2f + ldl t0, 0(sp) + ldl t1, 4(sp) + stq t0, 0(a4) + stq t1, 8(a4) + +2: stq v0, 8(sp) + CDISABLE + ldq v0, 8(sp) + ldq ra, 40(sp) + + addq sp, 64, sp + ret + + .align 3 +$cancel_error: + stq v0, 8(sp) + CDISABLE + ldq v0, 8(sp) + ldq ra, 40(sp) +#endif + .align 3 $error: addq sp, 64, sp |