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fix powerpc asm not to store data in volatile space below stack pointer
[musl]
/
src
/
signal
/
powerpc
/
sigsetjmp.s
diff --git
a/src/signal/powerpc/sigsetjmp.s
b/src/signal/powerpc/sigsetjmp.s
index
81f5a40
..
deed732
100644
(file)
--- a/
src/signal/powerpc/sigsetjmp.s
+++ b/
src/signal/powerpc/sigsetjmp.s
@@
-10,25
+10,25
@@
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);
#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
# thus store r3 on the stack, to restore it later
- stw 3,
-4
(1)
+ stw 3,
12
(1)
# store old link reg
mflr 0
# store old link reg
mflr 0
- stw 0, -8(1)
- # increase stack frame by 16
- subi 1, 1, 16
+ stw 0, 8(1)
# 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
# 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 sp
- addi 1, 1, 16
#restore r3
#restore r3
- lwz 3,
-4
(1)
+ lwz 3,
12
(1)
#restore link reg
#restore link reg
- lwz 0,
-
8(1)
+ lwz 0, 8(1)
mtlr 0
mtlr 0
+ #restore sp
+ addi 1, 1, 16
1:
b setjmp
1:
b setjmp