PPC port cleaned up, static linking works well now.

[musl] / src / signal / powerpc / sigsetjmp.s

diff --git a/src/signal/powerpc/sigsetjmp.s b/src/signal/powerpc/sigsetjmp.s
new file mode 100644 (file)
index 0000000..0b79dcc
--- /dev/null
+++ b/src/signal/powerpc/sigsetjmp.s
@@ -0,0 +1,34 @@
+        .global sigsetjmp
+        .type sigsetjmp,%function
+sigsetjmp:
+       #int sigsetjmp(sigjmp_buf buf, int save)
+       #               r3              r4
+       #0) store save into buf->__fl
+       stw 4, 256(3)
+       #1) compare save with 0
+       cmpwi cr7, 4, 0
+       #2) if its 0, goto setjmp code
+       beq- cr7, 1f
+       #3) else: we must call pthread_sigmask(SIG_SETMASK, 0, (sigset_t *)buf->__ss);
+       # thus store r3 on the stack, to restore it later
+       stw 3, -4(1)
+       # store old link reg
+       mflr 0
+       stw 0, -8(1)
+       # increase stack frame by 16
+       subi 1, 1, 16
+       # 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
+       lwz 3, -4(1)
+       #restore link reg
+       lwz 0, -8(1)
+       mtlr 0
+1:
+       b setjmp