cmd/vet: add support for GOARCH=mips{,le}

Change-Id: Ie7b40cc67e9901e252a4a48225bbd745a66d2673
Reviewed-on: https://go-review.googlesource.com/31511
Reviewed-by: Cherry Zhang <cherryyz@google.com>

2 files changed, 170 insertions, 1 deletions

diff --git a/src/cmd/vet/asmdecl.go b/src/cmd/vet/asmdecl.go
index 7d1cbea447..a516cc40c2 100644
--- a/src/cmd/vet/asmdecl.go
+++ b/src/cmd/vet/asmdecl.go
@@ -73,6 +73,8 @@ var (
 	asmArchArm64    = asmArch{"arm64", size88, false, "RSP", true}
 	asmArchAmd64    = asmArch{"amd64", size88, false, "SP", false}
 	asmArchAmd64p32 = asmArch{"amd64p32", size48, false, "SP", false}
+	asmArchMips     = asmArch{"mips", size44, true, "R29", true}
+	asmArchMipsLE   = asmArch{"mipsle", size44, false, "R29", true}
 	asmArchMips64   = asmArch{"mips64", size88, true, "R29", true}
 	asmArchMips64LE = asmArch{"mips64le", size88, false, "R29", true}
 	asmArchPpc64    = asmArch{"ppc64", size88, true, "R1", true}
@@ -85,6 +87,8 @@ var (
 		&asmArchArm64,
 		&asmArchAmd64,
 		&asmArchAmd64p32,
+		&asmArchMips,
+		&asmArchMipsLE,
 		&asmArchMips64,
 		&asmArchMips64LE,
 		&asmArchPpc64,
@@ -639,7 +643,7 @@ func asmCheckVar(badf func(string, ...interface{}), fn *asmFunc, line, expr stri
 					src = 8
 				}
 			}
-		case "mips64", "mips64le":
+		case "mips", "mipsle", "mips64", "mips64le":
 			switch op {
 			case "MOVB", "MOVBU":
 				src = 1
diff --git a/src/cmd/vet/testdata/asm8.s b/src/cmd/vet/testdata/asm8.s
new file mode 100644
index 0000000000..550d92a8d2
--- /dev/null
+++ b/src/cmd/vet/testdata/asm8.s
@@ -0,0 +1,165 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build mipsle
+// +build vet_test
+
+TEXT ·arg1(SB),0,$0-2
+	MOVB	x+0(FP), R1
+	MOVBU	y+1(FP), R2
+	MOVH	x+0(FP), R1 // ERROR "\[mipsle\] arg1: invalid MOVH of x\+0\(FP\); int8 is 1-byte value"
+	MOVHU	y+1(FP), R1 // ERROR "invalid MOVHU of y\+1\(FP\); uint8 is 1-byte value"
+	MOVW	x+0(FP), R1 // ERROR "invalid MOVW of x\+0\(FP\); int8 is 1-byte value"
+	MOVWU	y+1(FP), R1 // ERROR "invalid MOVWU of y\+1\(FP\); uint8 is 1-byte value"
+	MOVW	y+1(FP), R1 // ERROR "invalid MOVW of y\+1\(FP\); uint8 is 1-byte value"
+	MOVB	x+1(FP), R1 // ERROR "invalid offset x\+1\(FP\); expected x\+0\(FP\)"
+	MOVBU	y+2(FP), R1 // ERROR "invalid offset y\+2\(FP\); expected y\+1\(FP\)"
+	MOVB	8(R29), R1 // ERROR "8\(R29\) should be x\+0\(FP\)"
+	MOVB	9(R29), R1 // ERROR "9\(R29\) should be y\+1\(FP\)"
+	MOVB	10(R29), R1 // ERROR "use of 10\(R29\) points beyond argument frame"
+	RET
+
+TEXT ·arg2(SB),0,$0-4
+	MOVBU	x+0(FP), R1 // ERROR "arg2: invalid MOVBU of x\+0\(FP\); int16 is 2-byte value"
+	MOVB	y+2(FP), R1 // ERROR "invalid MOVB of y\+2\(FP\); uint16 is 2-byte value"
+	MOVHU	x+0(FP), R1
+	MOVH	y+2(FP), R2
+	MOVWU	x+0(FP), R1 // ERROR "invalid MOVWU of x\+0\(FP\); int16 is 2-byte value"
+	MOVW	y+2(FP), R1 // ERROR "invalid MOVW of y\+2\(FP\); uint16 is 2-byte value"
+	MOVHU	x+2(FP), R1 // ERROR "invalid offset x\+2\(FP\); expected x\+0\(FP\)"
+	MOVH	y+0(FP), R1 // ERROR "invalid offset y\+0\(FP\); expected y\+2\(FP\)"
+	RET
+
+TEXT ·arg4(SB),0,$0-2 // ERROR "arg4: wrong argument size 2; expected \$\.\.\.-8"
+	MOVB	x+0(FP), R1 // ERROR "invalid MOVB of x\+0\(FP\); int32 is 4-byte value"
+	MOVB	y+4(FP), R2 // ERROR "invalid MOVB of y\+4\(FP\); uint32 is 4-byte value"
+	MOVH	x+0(FP), R1 // ERROR "invalid MOVH of x\+0\(FP\); int32 is 4-byte value"
+	MOVH	y+4(FP), R1 // ERROR "invalid MOVH of y\+4\(FP\); uint32 is 4-byte value"
+	MOVW	x+0(FP), R1
+	MOVW	y+4(FP), R1
+	MOVW	x+4(FP), R1 // ERROR "invalid offset x\+4\(FP\); expected x\+0\(FP\)"
+	MOVW	y+2(FP), R1 // ERROR "invalid offset y\+2\(FP\); expected y\+4\(FP\)"
+	RET
+
+TEXT ·arg8(SB),7,$0-2 // ERROR "wrong argument size 2; expected \$\.\.\.-16"
+	MOVB	x+0(FP), R1 // ERROR "invalid MOVB of x\+0\(FP\); int64 is 8-byte value"
+	MOVB	y+8(FP), R2 // ERROR "invalid MOVB of y\+8\(FP\); uint64 is 8-byte value"
+	MOVH	x+0(FP), R1 // ERROR "invalid MOVH of x\+0\(FP\); int64 is 8-byte value"
+	MOVH	y+8(FP), R1 // ERROR "invalid MOVH of y\+8\(FP\); uint64 is 8-byte value"
+	MOVW	x+0(FP), R1 // ERROR "invalid MOVW of x\+0\(FP\); int64 is 8-byte value containing x_lo\+0\(FP\) and x_hi\+4\(FP\)"
+	MOVW	x_lo+0(FP), R1
+	MOVW	x_hi+4(FP), R1
+	MOVW	y+8(FP), R1 // ERROR "invalid MOVW of y\+8\(FP\); uint64 is 8-byte value containing y_lo\+8\(FP\) and y_hi\+12\(FP\)"
+	MOVW	y_lo+8(FP),  R1
+	MOVW	y_hi+12(FP), R1
+	RET
+
+TEXT ·argint(SB),0,$0-2 // ERROR "wrong argument size 2; expected \$\.\.\.-8"
+	MOVB	x+0(FP), R1 // ERROR "invalid MOVB of x\+0\(FP\); int is 4-byte value"
+	MOVB	y+4(FP), R2 // ERROR "invalid MOVB of y\+4\(FP\); uint is 4-byte value"
+	MOVH	x+0(FP), R1 // ERROR "invalid MOVH of x\+0\(FP\); int is 4-byte value"
+	MOVH	y+4(FP), R1 // ERROR "invalid MOVH of y\+4\(FP\); uint is 4-byte value"
+	MOVW	x+0(FP), R1
+	MOVW	y+4(FP), R1
+	MOVW	x+4(FP), R1 // ERROR "invalid offset x\+4\(FP\); expected x\+0\(FP\)"
+	MOVW	y+2(FP), R1 // ERROR "invalid offset y\+2\(FP\); expected y\+4\(FP\)"
+	RET
+
+TEXT ·argptr(SB),7,$0-2 // ERROR "wrong argument size 2; expected \$\.\.\.-20"
+	MOVB	x+0(FP), R1 // ERROR "invalid MOVB of x\+0\(FP\); \*byte is 4-byte value"
+	MOVB	y+4(FP), R2 // ERROR "invalid MOVB of y\+4\(FP\); \*byte is 4-byte value"
+	MOVH	x+0(FP), R1 // ERROR "invalid MOVH of x\+0\(FP\); \*byte is 4-byte value"
+	MOVH	y+4(FP), R1 // ERROR "invalid MOVH of y\+4\(FP\); \*byte is 4-byte value"
+	MOVW	x+0(FP), R1
+	MOVW	y+4(FP), R1
+	MOVW	x+4(FP), R1 // ERROR "invalid offset x\+4\(FP\); expected x\+0\(FP\)"
+	MOVW	y+2(FP), R1 // ERROR "invalid offset y\+2\(FP\); expected y\+4\(FP\)"
+	MOVH	c+8(FP), R1 // ERROR "invalid MOVH of c\+8\(FP\); chan int is 4-byte value"
+	MOVH	m+12(FP), R1 // ERROR "invalid MOVH of m\+12\(FP\); map\[int\]int is 4-byte value"
+	MOVH	f+16(FP), R1 // ERROR "invalid MOVH of f\+16\(FP\); func\(\) is 4-byte value"
+	RET
+
+TEXT ·argstring(SB),0,$16 // ERROR "wrong argument size 0; expected \$\.\.\.-16"
+	MOVH	x+0(FP), R1 // ERROR "invalid MOVH of x\+0\(FP\); string base is 4-byte value"
+	MOVW	x+0(FP), R1
+	MOVH	x_base+0(FP), R1 // ERROR "invalid MOVH of x_base\+0\(FP\); string base is 4-byte value"
+	MOVW	x_base+0(FP), R1
+	MOVH	x_len+0(FP), R1 // ERROR "invalid offset x_len\+0\(FP\); expected x_len\+4\(FP\)"
+	MOVW	x_len+0(FP), R1 // ERROR "invalid offset x_len\+0\(FP\); expected x_len\+4\(FP\)"
+	MOVH	x_len+4(FP), R1 // ERROR "invalid MOVH of x_len\+4\(FP\); string len is 4-byte value"
+	MOVW	x_len+4(FP), R1
+	MOVW	y+0(FP), R1 // ERROR "invalid offset y\+0\(FP\); expected y\+8\(FP\)"
+	MOVW	y_len+4(FP), R1 // ERROR "invalid offset y_len\+4\(FP\); expected y_len\+12\(FP\)"
+	RET
+
+TEXT ·argslice(SB),0,$24 // ERROR "wrong argument size 0; expected \$\.\.\.-24"
+	MOVH	x+0(FP), R1 // ERROR "invalid MOVH of x\+0\(FP\); slice base is 4-byte value"
+	MOVW	x+0(FP), R1
+	MOVH	x_base+0(FP), R1 // ERROR "invalid MOVH of x_base\+0\(FP\); slice base is 4-byte value"
+	MOVW	x_base+0(FP), R1
+	MOVH	x_len+0(FP), R1 // ERROR "invalid offset x_len\+0\(FP\); expected x_len\+4\(FP\)"
+	MOVW	x_len+0(FP), R1 // ERROR "invalid offset x_len\+0\(FP\); expected x_len\+4\(FP\)"
+	MOVH	x_len+4(FP), R1 // ERROR "invalid MOVH of x_len\+4\(FP\); slice len is 4-byte value"
+	MOVW	x_len+4(FP), R1
+	MOVH	x_cap+0(FP), R1 // ERROR "invalid offset x_cap\+0\(FP\); expected x_cap\+8\(FP\)"
+	MOVW	x_cap+0(FP), R1 // ERROR "invalid offset x_cap\+0\(FP\); expected x_cap\+8\(FP\)"
+	MOVH	x_cap+8(FP), R1 // ERROR "invalid MOVH of x_cap\+8\(FP\); slice cap is 4-byte value"
+	MOVW	x_cap+8(FP), R1
+	MOVW	y+0(FP), R1 // ERROR "invalid offset y\+0\(FP\); expected y\+12\(FP\)"
+	MOVW	y_len+4(FP), R1 // ERROR "invalid offset y_len\+4\(FP\); expected y_len\+16\(FP\)"
+	MOVW	y_cap+8(FP), R1 // ERROR "invalid offset y_cap\+8\(FP\); expected y_cap\+20\(FP\)"
+	RET
+
+TEXT ·argiface(SB),0,$0-16
+	MOVH	x+0(FP), R1 // ERROR "invalid MOVH of x\+0\(FP\); interface type is 4-byte value"
+	MOVW	x+0(FP), R1
+	MOVH	x_type+0(FP), R1 // ERROR "invalid MOVH of x_type\+0\(FP\); interface type is 4-byte value"
+	MOVW	x_type+0(FP), R1
+	MOVQ	x_itable+0(FP), R1 // ERROR "unknown variable x_itable; offset 0 is x_type\+0\(FP\)"
+	MOVQ	x_itable+1(FP), R1 // ERROR "unknown variable x_itable; offset 1 is x_type\+0\(FP\)"
+	MOVH	x_data+0(FP), R1 // ERROR "invalid offset x_data\+0\(FP\); expected x_data\+4\(FP\)"
+	MOVW	x_data+0(FP), R1 // ERROR "invalid offset x_data\+0\(FP\); expected x_data\+4\(FP\)"
+	MOVQ	x_data+0(FP), R1 // ERROR "invalid offset x_data\+0\(FP\); expected x_data\+4\(FP\)"
+	MOVH	x_data+4(FP), R1 // ERROR "invalid MOVH of x_data\+4\(FP\); interface data is 4-byte value"
+	MOVW	x_data+4(FP), R1
+	MOVH	y+8(FP), R1 // ERROR "invalid MOVH of y\+8\(FP\); interface itable is 4-byte value"
+	MOVW	y+8(FP), R1
+	MOVH	y_itable+8(FP), R1 // ERROR "invalid MOVH of y_itable\+8\(FP\); interface itable is 4-byte value"
+	MOVW	y_itable+8(FP), R1
+	MOVW	y_type+8(FP), AX // ERROR "unknown variable y_type; offset 8 is y_itable\+8\(FP\)"
+	MOVH	y_data+8(FP), AX // ERROR "invalid offset y_data\+8\(FP\); expected y_data\+12\(FP\)"
+	MOVW	y_data+8(FP), AX // ERROR "invalid offset y_data\+8\(FP\); expected y_data\+12\(FP\)"
+	MOVH	y_data+12(FP), AX // ERROR "invalid MOVH of y_data\+12\(FP\); interface data is 4-byte value"
+	MOVW	y_data+12(FP), AX
+	RET
+
+TEXT ·returnbyte(SB),0,$0-5
+	MOVW	x+0(FP), R1
+	MOVB	R1, ret+4(FP)
+	MOVH	R1, ret+4(FP) // ERROR "invalid MOVH of ret\+4\(FP\); byte is 1-byte value"
+	MOVW	R1, ret+4(FP) // ERROR "invalid MOVW of ret\+4\(FP\); byte is 1-byte value"
+	MOVB	R1, ret+3(FP) // ERROR "invalid offset ret\+3\(FP\); expected ret\+4\(FP\)"
+	RET
+
+TEXT ·returnbyte(SB),0,$0-5
+	MOVW	x+0(FP), R1
+	MOVB	R1, ret+4(FP)
+	MOVH	R1, ret+4(FP) // ERROR "invalid MOVH of ret\+4\(FP\); byte is 1-byte value"
+	MOVW	R1, ret+4(FP) // ERROR "invalid MOVW of ret\+4\(FP\); byte is 1-byte value"
+	MOVB	R1, ret+3(FP) // ERROR "invalid offset ret\+3\(FP\); expected ret\+4\(FP\)"
+	RET
+
+TEXT ·returnnamed(SB),0,$0-21
+	MOVB	x+0(FP), AX
+	MOVW	R1, r1+4(FP)
+	MOVH	R1, r2+8(FP)
+	MOVW	R1, r3+12(FP)
+	MOVW	R1, r3_base+12(FP)
+	MOVW	R1, r3_len+16(FP)
+	MOVB	R1, r4+20(FP)
+	MOVB	R1, r1+4(FP) // ERROR "invalid MOVB of r1\+4\(FP\); int is 4-byte value"
+	RET
+
+TEXT ·returnintmissing(SB),0,$0-4
+	RET // ERROR "RET without writing to 4-byte ret\+0\(FP\)"