powerpc-sf longjmp clobbering of val argument

the logic to check hwcap for SPE register file inadvertently clobbered
the val argument before use. switch to a different work register so
this doesn't happen.

diff --git a/src/setjmp/powerpc/longjmp.S b/src/setjmp/powerpc/longjmp.S
index 611389f..465e4cd 100644 (file)
--- a/src/setjmp/powerpc/longjmp.S
+++ b/src/setjmp/powerpc/longjmp.S
@@ -42,10 +42,10 @@ longjmp:
        bl 1f
        .hidden __hwcap
        .long __hwcap-.
-1:     mflr 4
-       lwz 5, 0(4)
-       lwzx 4, 4, 5
-       andis. 4, 4, 0x80
+1:     mflr 6
+       lwz 5, 0(6)
+       lwzx 6, 6, 5
+       andis. 6, 6, 0x80
        beq 1f
        .long 0x11c35b01 /* evldd 14,88(3) */
        .long 0x11e36301 /* ... */