[src/nathanw_sa]: src/lib/libc/arch/mips/sys Use __errno() in order to be thr...

[wdk <wdk%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/699e7f72659f
branches:  nathanw_sa
changeset: 505506:699e7f72659f
user:      wdk <wdk%NetBSD.org@localhost>
date:      Wed Jan 02 05:42:27 2002 +0000

description:
Use __errno() in order to be thread compliant.

Fixes bug in errno1 thread regression test

diffstat:

 lib/libc/arch/mips/sys/cerror.S |  34 +++++++++++++++++++++++++++-------
 1 files changed, 27 insertions(+), 7 deletions(-)

diffs (53 lines):

diff -r db2cb66ded40 -r 699e7f72659f lib/libc/arch/mips/sys/cerror.S
--- a/lib/libc/arch/mips/sys/cerror.S   Tue Jan 01 21:40:21 2002 +0000
+++ b/lib/libc/arch/mips/sys/cerror.S   Wed Jan 02 05:42:27 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cerror.S,v 1.9 2000/12/13 23:29:07 simonb Exp $        */
+/*     $NetBSD: cerror.S,v 1.9.2.1 2002/01/02 05:42:27 wdk Exp $       */
 
 /*-
  * Copyright (c) 1991, 1993
@@ -40,17 +40,37 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
        ASMSTR("from: @(#)cerror.s      8.1 (Berkeley) 6/16/93")
-       ASMSTR("$NetBSD: cerror.S,v 1.9 2000/12/13 23:29:07 simonb Exp $")
+       ASMSTR("$NetBSD: cerror.S,v 1.9.2.1 2002/01/02 05:42:27 wdk Exp $")
 #endif /* LIBC_SCCS and not lint */
 
+#ifdef _REENTRANT
+       .globl  _C_LABEL(__errno)
+NESTED_NOPROFILE(__cerror, CALLFRAME_SIZ, ra)
+       .mask   0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
+       PIC_PROLOGUE(__cerror, t9)
+       subu    sp, sp, CALLFRAME_SIZ
+       sw      ra, CALLFRAME_RA(sp)
+       sw      v0, CALLFRAME_SIZ(sp)   # stash away errno value
+
+       la      t9, _C_LABEL(__errno)   # locate address of errno
+       jalr    t9
+       nop
+
+       lw      t0, CALLFRAME_SIZ(sp)   # restore errno value
+       lw      ra, CALLFRAME_RA(sp)
+       sw      t0, 0(v0)               # update errno value
+       li      v0, -1
+       addiu   sp, sp, CALLFRAME_SIZ
+       j       ra
+       move    v1, v0                  # -BDSlot
+END(__cerror)
+#else          
        .globl  _C_LABEL(errno)
 LEAF_NOPROFILE(__cerror)
-       .set    noreorder
-#ifdef ABICALLS
-       .cpload t9
-#endif
+       PIC_PROLOGUE(__cerror, t9)
        sw      v0, _C_LABEL(errno)
        li      v0, -1
        j       ra
-       li      v1, -1
+       move    v1, v0
 END(__cerror)
+#endif /* _REENTRANT */