runtime: add argument sizes for asm functions for bytes, strings

Also fixed a stack corruption bug for nacl/amd64p32.

Change-Id: I64b821b16999c296a159137d971af3870053c621
Signed-off-by: Shenghou Ma <minux@golang.org>
Reviewed-on: https://go-review.googlesource.com/7073Reviewed-by: Dave Cheney <dave@cheney.net>

src/runtime/asm_386.s

@@ -1451,7 +1451,7 @@ TEXT bytes·Compare(SB),NOSPLIT,$0-28
 	MOVL	AX, ret+24(FP)
 	RET
 
-TEXT bytes·IndexByte(SB),NOSPLIT,$0
+TEXT bytes·IndexByte(SB),NOSPLIT,$0-20
 	MOVL	s+0(FP), SI
 	MOVL	s_len+4(FP), CX
 	MOVB	c+12(FP), AL
@@ -1465,7 +1465,7 @@ TEXT bytes·IndexByte(SB),NOSPLIT,$0
 	MOVL	DI, ret+16(FP)
 	RET
 
-TEXT strings·IndexByte(SB),NOSPLIT,$0
+TEXT strings·IndexByte(SB),NOSPLIT,$0-16
 	MOVL	s+0(FP), SI
 	MOVL	s_len+4(FP), CX
 	MOVB	c+8(FP), AL

src/runtime/asm_amd64.s

@@ -1509,7 +1509,7 @@ allsame:
 	LEAQ	-1(CX)(AX*2), AX	// 1,0,-1 result
 	RET
 
-TEXT bytes·IndexByte(SB),NOSPLIT,$0
+TEXT bytes·IndexByte(SB),NOSPLIT,$0-40
 	MOVQ s+0(FP), SI
 	MOVQ s_len+8(FP), BX
 	MOVB c+24(FP), AL
@@ -1517,7 +1517,7 @@ TEXT bytes·IndexByte(SB),NOSPLIT,$0
 	MOVQ AX, ret+32(FP)
 	RET
 
-TEXT strings·IndexByte(SB),NOSPLIT,$0
+TEXT strings·IndexByte(SB),NOSPLIT,$0-32
 	MOVQ s+0(FP), SI
 	MOVQ s_len+8(FP), BX
 	MOVB c+16(FP), AL

src/runtime/asm_amd64p32.s

@@ -822,7 +822,7 @@ TEXT bytes·Compare(SB),NOSPLIT,$0-28
 	MOVL	s2+12(FP), DI
 	MOVL	s2+16(FP), DX
 	CALL	runtime·cmpbody(SB)
-	MOVQ	AX, res+24(FP)
+	MOVL	AX, res+24(FP)
 	RET
 
 // input:
@@ -943,7 +943,7 @@ allsame:
 	LEAQ	-1(CX)(AX*2), AX	// 1,0,-1 result
 	RET
 
-TEXT bytes·IndexByte(SB),NOSPLIT,$0
+TEXT bytes·IndexByte(SB),NOSPLIT,$0-20
 	MOVL s+0(FP), SI
 	MOVL s_len+4(FP), BX
 	MOVB c+12(FP), AL
@@ -951,7 +951,7 @@ TEXT bytes·IndexByte(SB),NOSPLIT,$0
 	MOVL AX, ret+16(FP)
 	RET
 
-TEXT strings·IndexByte(SB),NOSPLIT,$0
+TEXT strings·IndexByte(SB),NOSPLIT,$0-20
 	MOVL s+0(FP), SI
 	MOVL s_len+4(FP), BX
 	MOVB c+8(FP), AL

src/runtime/asm_arm.s

@@ -808,7 +808,7 @@ loop:
 	RET
 
 // TODO: share code with memeq?
-TEXT bytes·Equal(SB),NOSPLIT,$0
+TEXT bytes·Equal(SB),NOSPLIT,$0-25
 	MOVW	a_len+4(FP), R1
 	MOVW	b_len+16(FP), R3
 	
@@ -837,12 +837,12 @@ equal:
 	MOVBU	R0, ret+24(FP)
 	RET
 
-TEXT bytes·IndexByte(SB),NOSPLIT,$0
+TEXT bytes·IndexByte(SB),NOSPLIT,$0-20
 	MOVW	s+0(FP), R0
 	MOVW	s_len+4(FP), R1
 	MOVBU	c+12(FP), R2	// byte to find
 	MOVW	R0, R4		// store base for later
-	ADD	R0, R1		// end 
+	ADD	R0, R1		// end
 
 _loop:
 	CMP	R0, R1
@@ -853,7 +853,7 @@ _loop:
 
 	SUB	$1, R0		// R0 will be one beyond the position we want
 	SUB	R4, R0		// remove base
-	MOVW    R0, ret+16(FP) 
+	MOVW    R0, ret+16(FP)
 	RET
 
 _notfound:
@@ -861,12 +861,12 @@ _notfound:
 	MOVW	R0, ret+16(FP)
 	RET
 
-TEXT strings·IndexByte(SB),NOSPLIT,$0
+TEXT strings·IndexByte(SB),NOSPLIT,$0-16
 	MOVW	s+0(FP), R0
 	MOVW	s_len+4(FP), R1
 	MOVBU	c+8(FP), R2	// byte to find
 	MOVW	R0, R4		// store base for later
-	ADD	R0, R1		// end 
+	ADD	R0, R1		// end
 
 _sib_loop:
 	CMP	R0, R1
@@ -877,7 +877,7 @@ _sib_loop:
 
 	SUB	$1, R0		// R0 will be one beyond the position we want
 	SUB	R4, R0		// remove base
-	MOVW	R0, ret+12(FP) 
+	MOVW	R0, ret+12(FP)
 	RET
 
 _sib_notfound:

src/runtime/asm_ppc64x.s

@@ -1039,7 +1039,7 @@ notfound:
 	MOVD	R3, ret+32(FP)
 	RETURN
 
-TEXT strings·IndexByte(SB),NOSPLIT,$0
+TEXT strings·IndexByte(SB),NOSPLIT,$0-32
 	MOVD	p+0(FP), R3
 	MOVD	b_len+8(FP), R4
 	MOVBZ	c+16(FP), R5	// byte to find