summaryrefslogtreecommitdiff
path: root/src/signal/powerpc
diff options
context:
space:
mode:
authorrofl0r <retnyg@gmx.net>2012-11-19 06:21:48 +0100
committerrofl0r <retnyg@gmx.net>2012-11-19 16:58:09 +0100
commit3fae236e00068d17e007275717940f5d5e94ba1a (patch)
treecd95a0eb060b4e31cf8993e4ffd08fe9597e9689 /src/signal/powerpc
parent6c0cba819fb593f1efa33e0acd0bf59597279d97 (diff)
downloadmusl-3fae236e00068d17e007275717940f5d5e94ba1a.tar.gz
musl-3fae236e00068d17e007275717940f5d5e94ba1a.tar.bz2
musl-3fae236e00068d17e007275717940f5d5e94ba1a.tar.xz
musl-3fae236e00068d17e007275717940f5d5e94ba1a.zip
powerpc: handle syscall error in clone.
sigsetjmp: store temporaries in jmp_buf rather than on stack.
Diffstat (limited to 'src/signal/powerpc')
-rw-r--r--src/signal/powerpc/sigsetjmp.s29
1 files changed, 15 insertions, 14 deletions
diff --git a/src/signal/powerpc/sigsetjmp.s b/src/signal/powerpc/sigsetjmp.s
index deed732f..a23463d2 100644
--- a/src/signal/powerpc/sigsetjmp.s
+++ b/src/signal/powerpc/sigsetjmp.s
@@ -10,25 +10,26 @@ sigsetjmp:
#2) if its 0, goto setjmp code
beq- cr7, 1f
#3) else: we must call pthread_sigmask(SIG_SETMASK, 0, (sigset_t *)buf->__ss);
- # increase stack frame by 16
- subi 1, 1, 16
- # thus store r3 on the stack, to restore it later
- stw 3, 12(1)
- # store old link reg
- mflr 0
- stw 0, 8(1)
+ # store non-volatile regs 30, 31 into the setjmp buf
+ stw 30, 0(3)
+ stw 31, 4(3)
+ # use them to store the pointer to the jmpbuf and the link reg
+ mr 30, 3
+ mflr 31
+
# put pointer to ss buf into r5 (3rd arg)
addi 5, 3, 260
# put "2" i.e. SIG_SETMASK in r3
li 3, 2
li 4, 0
bl pthread_sigmask
- #restore r3
- lwz 3, 12(1)
- #restore link reg
- lwz 0, 8(1)
- mtlr 0
- #restore sp
- addi 1, 1, 16
+
+ #restore jmpbuf pointer and link reg
+ mr 3, 30
+ mtlr 31
+ #resore non-volatile regs
+ lwz 30, 0(3)
+ lwz 31, 4(3)
+
1:
b setjmp