24 Jul
2015
24 Jul
'15
11:14 p.m.
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- Log -----------------------------------------------------------------
commit bb7d04b2ba168a051d288ee82c24faf68a433ed2
Author: mirabilos <tg(a)mirbsd.org>
Date: Sat Jul 25 00:37:44 2015 +0200
fix MIPS N32 ABI Big Endian setjmp/longjmp
access to the jmp_buf structure occasionally happens asymmetrically:
fields defined in pointer size width (64 on N32) can be accessed as
32-bit words, but in that case, a̲l̲l̲ involved code must agree on that…
commit f16647aab5a98dcb1d2bc6768709018d15ddfe67
Author: mirabilos <tg(a)mirbsd.org>
Date: Fri Jul 24 22:18:07 2015 +0200
integrate old m68k vfork bugfix of pre-µClibc-ng tree
-----------------------------------------------------------------------
Summary of changes:
libc/sysdeps/linux/m68k/vfork.S | 19 +++++++++++--------
libc/sysdeps/linux/mips/__longjmp.c | 6 +++---
2 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/libc/sysdeps/linux/m68k/vfork.S b/libc/sysdeps/linux/m68k/vfork.S
index b2fe033..bde9d5a 100644
--- a/libc/sysdeps/linux/m68k/vfork.S
+++ b/libc/sysdeps/linux/m68k/vfork.S
@@ -22,20 +22,23 @@ __vfork:
movl %sp@+, %a1 /* save the return address for later */
movl IMM __NR_vfork,%d0
trap #0
- movl IMM -4097, %d1
- cmpl %d0, %d1
- bcs fix_errno
- jmp %a1@ /* don't return, just jmp directly */
-fix_errno:
- negl %d0
+ movl %a1, -(%sp)
+
+ cmpil #-4096,%d0
+ blss 1f
+
+ neg.l %d0
#ifndef __PIC__ /* needs handling as the other archs */
movl errno, %a0
#else
movl errno@GOT(%a5), %a0
#endif
movl %d0, %a0@
- movl IMM -1, %d0
- jmp %a1@ /* don't return, just jmp directly */
+ move.l #-1, %d0
+
+1:
+ move.l %d0, %a0
+ rts
.size __vfork,.-__vfork
weak_alias(__vfork,vfork)
diff --git a/libc/sysdeps/linux/mips/__longjmp.c b/libc/sysdeps/linux/mips/__longjmp.c
index 5b59971..aa94f76 100644
--- a/libc/sysdeps/linux/mips/__longjmp.c
+++ b/libc/sysdeps/linux/mips/__longjmp.c
@@ -101,13 +101,13 @@ void __longjmp (__jmp_buf env, int val_arg)
/* Restore the stack pointer and the FP. They have to be restored
last and in a single asm as gcc, depending on options used, may
use either of them to access env. */
-#if _MIPS_SIM == _MIPS_SIM_ABI64
+#if _MIPS_SIM != _MIPS_SIM_ABI32
__asm__ __volatile__ ("ld $29, %0\n\t"
"ld $30, %1\n\t" : : "m" (env[0].__sp), "m"
(env[0].__fp));
-#else /* O32 || N32 */
+#else /* O32 */
__asm__ __volatile__ ("lw $29, %0\n\t"
"lw $30, %1\n\t" : : "m" (env[0].__sp), "m"
(env[0].__fp));
-#endif /* O32 || N32 */
+#endif /* O32 */
/* Give setjmp 1 if given a 0, or what they gave us if non-zero. */
if (val == 0)
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