fix off by 4 in newproc arg copying.

R=rsc
APPROVED=rsc
DELTA=4  (0 added, 0 deleted, 4 changed)
OCL=36001
CL=36004

src/cmd/5g/ggen.c

@@ -133,7 +133,7 @@ ginscall(Node *f, int proc)
 		p = gins(AMOVW, &r, N);
 		p->to.type = D_OREG;
 		p->to.reg = REGSP;
-		p->to.offset = -8;
+		p->to.offset = -12;
 		p->scond |= C_WBIT;
 
 		memset(&n1, 0, sizeof n1);
@@ -168,7 +168,7 @@ ginscall(Node *f, int proc)
 		p = gins(AMOVW, &r, N);
 		p->to.type = D_OREG;
 		p->to.reg = REGSP;
-		p->to.offset = 8;
+		p->to.offset = 12;
 		p->scond |= C_WBIT;
 		regfree(&r);
 

src/pkg/runtime/arm/asm.s

@@ -91,7 +91,7 @@ TEXT	breakpoint(SB),7,$0
 
 // uintptr gosave(Gobuf*)
 // save state in Gobuf; setjmp
-TEXT gosave(SB), 7, $0
+TEXT gosave(SB), 7, $-4
 	MOVW	0(FP), R0
 	MOVW	SP, gobuf_sp(R0)
 	MOVW	LR, gobuf_pc(R0)
@@ -101,7 +101,7 @@ TEXT gosave(SB), 7, $0
 
 // void gogo(Gobuf*, uintptr)
 // restore state from Gobuf; longjmp
-TEXT	gogo(SB), 7, $0
+TEXT	gogo(SB), 7, $-4
 	MOVW	0(FP), R1			// gobuf
 	MOVW	4(FP), R0		// return 2nd arg
 	MOVW	gobuf_g(R1), g