mips clone: don't free stack space used to copy arg

the mips abi reserves stack space equal to the size of the in-register
args for the callee to save the args, if desired. this would cause the
beginning of the thread structure to be clobbered...

diff --git a/src/thread/mips/clone.s b/src/thread/mips/clone.s
index fab90dc..826716a 100644 (file)
--- a/src/thread/mips/clone.s
+++ b/src/thread/mips/clone.s
@@ -25,5 +25,4 @@ __clone:
 1:     lw $25, 0($sp)
        lw $4, 4($sp)
        jr $25
-       addu $sp, $sp, 16
        nop