tests: test functions with random signatures (#216)

Adds a test for function signature memory layout by generating functions with random signatures. This confirms that the size and offsets computed by `gotypes` agree with `asmdecl`. Updates #191 #195
2021-10-30 18:22:24 -07:00
parent bcbebd5674
commit 6acd6a048d
4 changed files with 2131 additions and 0 deletions
--- a/tests/signature/asm.go
+++ b/tests/signature/asm.go
@@ -0,0 +1,78 @@
+//go:build ignore
+// +build ignore
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"go/token"
+	"go/types"
+	"math/rand"
+
+	. "github.com/mmcloughlin/avo/build"
+	. "github.com/mmcloughlin/avo/gotypes"
+	. "github.com/mmcloughlin/avo/reg"
+)
+
+var (
+	seed = flag.Int64("seed", 0, "random seed")
+	num  = flag.Int("num", 32, "number of test functions to generate")
+)
+
+func main() {
+	flag.Parse()
+
+	rand.Seed(*seed)
+
+	for i := 0; i < *num; i++ {
+		name := fmt.Sprintf("Signature%d", i)
+		sig := RandomSignature()
+		SignatureFunction(name, sig)
+	}
+
+	Generate()
+}
+
+func SignatureFunction(name string, sig *types.Signature) {
+	// Declare the function.
+	TEXT(name, 0, sig.String())
+
+	// Write to the results. Otherwise, asmdecl would warn us.
+	regsize := map[int64]Virtual{1: GP8(), 2: GP16(), 4: GP32(), 8: GP64()}
+	rs := sig.Results()
+	for i := 0; i < rs.Len(); i++ {
+		r := rs.At(i)
+		size := Sizes.Sizeof(r.Type())
+		Store(regsize[size], ReturnIndex(i))
+	}
+
+	RET()
+}
+
+func RandomSignature() *types.Signature {
+	p := RandomTuple()
+	r := RandomTuple()
+	return types.NewSignature(nil, p, r, false)
+}
+
+func RandomTuple() *types.Tuple {
+	n := rand.Intn(5)
+	vs := make([]*types.Var, n)
+	for i := 0; i < n; i++ {
+		t := RandomType()
+		vs[i] = types.NewVar(token.NoPos, nil, "", t)
+	}
+	return types.NewTuple(vs...)
+}
+
+func RandomType() types.Type {
+	accept := types.IsInteger | types.IsUnsigned
+	for {
+		t := types.Typ[rand.Intn(len(types.Typ))]
+		info := t.Info()
+		if info != 0 && (info&^accept) == 0 {
+			return t
+		}
+	}
+}
--- a/tests/signature/gen.go
+++ b/tests/signature/gen.go
@@ -0,0 +1,4 @@
+// Package signature tests handling of random function signatures.
+package signature
+
+//go:generate go run asm.go -out signature.s -stubs stub.go -seed 42 -num 256
--- a/tests/signature/signature.s
+++ b/tests/signature/signature.s
--- a/tests/signature/stub.go
+++ b/tests/signature/stub.go
@@ -0,0 +1,515 @@
+// Code generated by command: go run asm.go -out signature.s -stubs stub.go -seed 42 -num 256. DO NOT EDIT.
+
+package signature
+
+func Signature0() (uint32, int16)
+
+func Signature1(int16, uint, uint32) (int64, int8, uint64, int64)
+
+func Signature2(uint, int16) (uint32, uintptr, int16, uint16)
+
+func Signature3(uintptr, uint32) uint32
+
+func Signature4(int64, uint32) (uint16, int64, uint32, int8)
+
+func Signature5(int8)
+
+func Signature6(int64)
+
+func Signature7(uint) (int8, int, uintptr, uintptr)
+
+func Signature8(uint16) int
+
+func Signature9(uint32, uint16, uint16) (uintptr, uint16, int8, uint8)
+
+func Signature10(uint, uint, int64) (int8, uintptr, uint, int32)
+
+func Signature11() (uint64, int16, uint64, uint)
+
+func Signature12(uintptr) (uint8, uint8)
+
+func Signature13() uint8
+
+func Signature14(int8, uint64, uintptr) int32
+
+func Signature15(uint32, uint32, int16) (uint64, int)
+
+func Signature16(uint32) uint16
+
+func Signature17(int16) (int32, uint, int8, uint8)
+
+func Signature18(uintptr, uintptr) (uint8, uint32)
+
+func Signature19(int, uint64, int) (int32, uintptr)
+
+func Signature20(uint32)
+
+func Signature21(uint8, int8, uint64) (uint16, uint32)
+
+func Signature22(int, uint16, uint8, int8) (int8, uint32)
+
+func Signature23(int32, uint32) (uint8, int16)
+
+func Signature24(int16, uintptr)
+
+func Signature25(int8, int32, uint16, uint)
+
+func Signature26() (uint16, uint64, int)
+
+func Signature27(uint32) (uint64, uint8)
+
+func Signature28(uint64, int16, uint8, uintptr) (uint16, uintptr)
+
+func Signature29(int8, int32, uint64, int64) uint16
+
+func Signature30(int8, uint16, int32, uint64) uint8
+
+func Signature31(uint64, uint8, uint32) (int16, uintptr)
+
+func Signature32(int16, int) (int64, uint64, uintptr, uint16)
+
+func Signature33(int16, int8, int8)
+
+func Signature34(uint16, int64)
+
+func Signature35(int8, uint, uint, int8) uint64
+
+func Signature36() (uint8, int, uintptr, uintptr)
+
+func Signature37() (uint16, uint16, uint32, uint16)
+
+func Signature38(uint8, uint, uint32)
+
+func Signature39(uint8, int32, int) int16
+
+func Signature40(int16, int, int16) (int8, uint64)
+
+func Signature41() (uint, uintptr, uint32)
+
+func Signature42(uint8, uint8)
+
+func Signature43() uint8
+
+func Signature44(int32, int16) uint32
+
+func Signature45() (uintptr, uintptr, uint8)
+
+func Signature46(int8) (uint8, uint8, uint, int32)
+
+func Signature47(uint8) uint
+
+func Signature48(int32, uint, uintptr, int32) uint8
+
+func Signature49(uint16, int16)
+
+func Signature50(int64, int16, uint64, uintptr) (int8, uint, int32)
+
+func Signature51(int64, uint32, int8)
+
+func Signature52() (uint8, int32, int64)
+
+func Signature53() (uint8, uint16)
+
+func Signature54(uint64, int16, uint64) (int16, int16)
+
+func Signature55(uint64) (uint, int, uint32, uintptr)
+
+func Signature56() (int16, uintptr)
+
+func Signature57(uint32, uint8, uint)
+
+func Signature58(int, int64)
+
+func Signature59() uint8
+
+func Signature60(uintptr, int8, uint8, uint)
+
+func Signature61(int8, uint16, int8)
+
+func Signature62() uint8
+
+func Signature63(int32, int, int64) (int64, uintptr, int32, uint64)
+
+func Signature64(uint32, uint16, uint8) (int16, int32)
+
+func Signature65(int32, uint8)
+
+func Signature66() (int16, uintptr, uint32, uint)
+
+func Signature67(uint32, uint)
+
+func Signature68(int32, uint64, uint16) int32
+
+func Signature69(int) uint
+
+func Signature70() int64
+
+func Signature71(int, int8, uint16, uint16) (uint16, uint64)
+
+func Signature72(uint32, uintptr, uint8) (uint16, int8, int16, uint16)
+
+func Signature73(int8, uint32, int8, uint) (uint64, int64)
+
+func Signature74() (int64, uint64, uint16, int64)
+
+func Signature75(uint16, int) (uintptr, uint, uint32)
+
+func Signature76() int8
+
+func Signature77(uint32, uint32)
+
+func Signature78(int) (uint, int32)
+
+func Signature79(int16, int64, int32) (int64, uint8)
+
+func Signature80() (int64, int8, int8)
+
+func Signature81(uint8, uintptr)
+
+func Signature82(uint, int32, int64) (uint8, uintptr, uint, uint32)
+
+func Signature83(uint64, uint) (int8, int, uintptr)
+
+func Signature84() (uint64, int16)
+
+func Signature85(uint32, uint64, uint64) (int16, int8, uint64)
+
+func Signature86(int16, uint64, int64, uint64) (uint64, uint32, uintptr)
+
+func Signature87(int32, uint8, int32, int8) uintptr
+
+func Signature88(int, int8, uintptr, int64) (uint8, uint8, int64, int8)
+
+func Signature89(int64, uint16) (uint8, int, int32)
+
+func Signature90(uint64) (uint64, uint64, int64)
+
+func Signature91(uint16, uintptr, int, int64) (int8, uint8, int, int)
+
+func Signature92(uint32, uint64, uint32, uint) (int8, uint8, uint)
+
+func Signature93(uint32, uint, int64, int)
+
+func Signature94(uint64)
+
+func Signature95() (uint, uintptr, int, uintptr)
+
+func Signature96(uint8, int16, int32) uint64
+
+func Signature97(uint, uint, uint) (int8, int, int64)
+
+func Signature98(int8, int) (int16, int16)
+
+func Signature99(uint64) (uintptr, int16, uintptr)
+
+func Signature100(int32) (int, int16, int64, uint32)
+
+func Signature101() (uint64, uint64, int64, uint8)
+
+func Signature102(uint32, uint)
+
+func Signature103() uint16
+
+func Signature104() (int, uint)
+
+func Signature105(uint16, int64, int8) uint64
+
+func Signature106(uint32, int64, uint32, uint8)
+
+func Signature107(uint64, uintptr) int32
+
+func Signature108(uint8, int64, uint8, uint32) int64
+
+func Signature109(uint, uint, uint8, uint32) int
+
+func Signature110() uint8
+
+func Signature111(uint32, uint) (int16, uint64, uint32, uint32)
+
+func Signature112(uint, uintptr, uint16, uint16) (uint32, int16, int64, uint)
+
+func Signature113(uintptr, int64, uintptr, int32) (int16, int64)
+
+func Signature114(int32, int64, uint, uint32)
+
+func Signature115() uint64
+
+func Signature116() (int64, uint16)
+
+func Signature117(uintptr, int64, int32, uintptr)
+
+func Signature118(int32, uint)
+
+func Signature119(int32, int16) (int16, int64)
+
+func Signature120(int, uintptr) (uint8, uint16, int)
+
+func Signature121(uint32, int32)
+
+func Signature122() int32
+
+func Signature123() (uint, uint, int32)
+
+func Signature124(uint64, int32, uint32) (uint32, uint32, uint8)
+
+func Signature125(uint32, uint64)
+
+func Signature126(uint, uint8, uint64) int8
+
+func Signature127(uint64, uint8) (uintptr, uint32)
+
+func Signature128(uint64)
+
+func Signature129() (uint64, uint8, int8)
+
+func Signature130(uint, uint8, uint, int64) (uint64, uint8)
+
+func Signature131() (uint8, uint32, uint16)
+
+func Signature132() (int64, int64, int, uint64)
+
+func Signature133(uint64, uint8, int64, uint32) (uint32, uint8, int32)
+
+func Signature134(int32) uintptr
+
+func Signature135(uint16) (uintptr, int32, int, uint8)
+
+func Signature136(int64)
+
+func Signature137(uint8, uint16, int, int8) int64
+
+func Signature138()
+
+func Signature139() (int, uint8, uint32)
+
+func Signature140(uint32, int16) int8
+
+func Signature141(uint16) (uintptr, uint32, uint64)
+
+func Signature142(int, int64) (uint64, int8)
+
+func Signature143(int) (int64, int, int, int32)
+
+func Signature144(uint64, int16, int8, int16) (int16, uint64, int32)
+
+func Signature145() (int, int64)
+
+func Signature146() (uint, int64, int8, uint32)
+
+func Signature147(int16)
+
+func Signature148(uint, uint32) (uint8, int32, uint16, uint)
+
+func Signature149(uint64, uint64, int, int8) (uintptr, int, uint64)
+
+func Signature150(uint32, int32) (int16, uintptr, uint16)
+
+func Signature151(uint32, int16) (int, uint, uint)
+
+func Signature152() (uint, int32, int64)
+
+func Signature153(uint8, uint16, uint64, uint) int
+
+func Signature154(uint, int, int32, int64) (uint, int8, int16, uintptr)
+
+func Signature155(int16, uint16) (uint, int16, uint, int16)
+
+func Signature156(int64)
+
+func Signature157(int64, uint16, uint16) (uint, int64)
+
+func Signature158() (int32, uint64, int64)
+
+func Signature159(int, uint)
+
+func Signature160() int
+
+func Signature161(uint, int32, uint64, int16) (uint32, int32, uint, uintptr)
+
+func Signature162(uintptr, int, int) (int16, int8)
+
+func Signature163(int32) uintptr
+
+func Signature164(uintptr) (int64, uint, uint8, uint64)
+
+func Signature165(int16, uintptr) (int8, int, int16)
+
+func Signature166(int16) uint16
+
+func Signature167(uint32, int, int64) (int, uint16, int8, uintptr)
+
+func Signature168(int32, uint16) (uint16, uint16, uint16)
+
+func Signature169(uint32, uint8, int64)
+
+func Signature170(uint16, uintptr, uintptr, uintptr) (int, uint8, uint64)
+
+func Signature171()
+
+func Signature172(int32, uint32) (int8, int64)
+
+func Signature173(uint8, uint64)
+
+func Signature174() uint8
+
+func Signature175(uint) (uint32, uint32, uint8, int8)
+
+func Signature176(uintptr, uintptr, int, uint8)
+
+func Signature177(uint, uint) (int16, uintptr)
+
+func Signature178() int8
+
+func Signature179(int32, int32, int8) (int8, uintptr)
+
+func Signature180(uintptr, uint16) (int64, uint8, uintptr, int64)
+
+func Signature181() (int8, uintptr)
+
+func Signature182(int32, uint32) (uintptr, int, uint, uint)
+
+func Signature183() int
+
+func Signature184(int)
+
+func Signature185(int16, uint8, int16) uint64
+
+func Signature186(int, int32) (int64, int16, uint8)
+
+func Signature187(uint64) (uint32, int)
+
+func Signature188() (int8, uint)
+
+func Signature189(int8, uint)
+
+func Signature190() int64
+
+func Signature191(uint16, uint) uint16
+
+func Signature192() (uint16, int32, int)
+
+func Signature193(uint8, int, int32) (int8, uintptr, uint64, int)
+
+func Signature194(uint16, uint64, uint8) (int, int8, uint)
+
+func Signature195(int, uint) (int32, int, int8)
+
+func Signature196(uint16) (uintptr, uint32)
+
+func Signature197(uintptr, int32) (int64, int16)
+
+func Signature198(uint8) (uint8, int16, uint32)
+
+func Signature199(uint)
+
+func Signature200(uintptr) uintptr
+
+func Signature201(uint64, int8) (uint8, int8, int16, uintptr)
+
+func Signature202(uint16, uint64, int8, uint) (uint, uint64, uintptr, int16)
+
+func Signature203(int16, int8, uint, int8)
+
+func Signature204(int16, int32, uint) (uint8, int64, uintptr)
+
+func Signature205(int, int8, int16, int16) (uintptr, uint64, uint64, uintptr)
+
+func Signature206() (int8, int, uint32)
+
+func Signature207(uint16) (int32, uint16)
+
+func Signature208(int32, uintptr, int8, int32) (uint8, uint, int16)
+
+func Signature209(int8, int16)
+
+func Signature210(int) (uint64, uint64, int8)
+
+func Signature211(uint32, uint, uintptr) (uint32, uint64, uint8)
+
+func Signature212(uint8, int8, int) uint8
+
+func Signature213(uint16, uintptr) (uint64, uint16, int)
+
+func Signature214(uint16, uintptr, int8) (int16, int64, int)
+
+func Signature215(int16, int8) uintptr
+
+func Signature216() (int16, uint16)
+
+func Signature217(int32, uint, int) (uint32, int64, uint)
+
+func Signature218() (int16, uint16, int16, uint32)
+
+func Signature219(int32, int32) (uint16, uint8)
+
+func Signature220(uint8, int64) (uint64, int32)
+
+func Signature221(uintptr, int, int8) uint64
+
+func Signature222() uintptr
+
+func Signature223(uint16, uint8, uint16, uint8) (uint32, int32)
+
+func Signature224(int16, int8, int8, uint32)
+
+func Signature225(uintptr, int64) (int32, int, uintptr)
+
+func Signature226(uint64) int64
+
+func Signature227() (int64, int32, uintptr)
+
+func Signature228(int16, int64, int16, int64)
+
+func Signature229(int32, int, uint64, int64) (int, uint, uintptr, uint16)
+
+func Signature230() (uintptr, uint64)
+
+func Signature231() (int8, uint32, int, int16)
+
+func Signature232()
+
+func Signature233(uint16, uint8, int16) (uint8, int16, uint64, int64)
+
+func Signature234(int8, uint8, int8) (uint8, uint8, uintptr)
+
+func Signature235(int16, uint) (int64, uint16, uint32)
+
+func Signature236(uint64, uint, int32, int8)
+
+func Signature237(uint32, int32, int, uintptr) (int16, int64, int32)
+
+func Signature238(int8, uint16)
+
+func Signature239() (uint64, int8)
+
+func Signature240(uint, int32, uint64) uint64
+
+func Signature241(int64, uint, uint8)
+
+func Signature242(int64, int8, uint32) (int32, uint, uint32, uint64)
+
+func Signature243(uint, uint16) uint16
+
+func Signature244() (uintptr, int, uint8)
+
+func Signature245(int64, int16)
+
+func Signature246(int64, uint16, uint8) (uint16, uint, uint)
+
+func Signature247(uint32, uintptr) (int32, int32)
+
+func Signature248(int16, int16) (uint, int32)
+
+func Signature249() (uint32, uint16, uint)
+
+func Signature250(int64, uintptr) (uint64, uint16)
+
+func Signature251(int64, int32, int, int64) uintptr
+
+func Signature252(int) uint16
+
+func Signature253(int8, uint) (int, uint16, int64)
+
+func Signature254(uint32) (int8, int32)
+
+func Signature255(uint8, uint64, int8, int8) (int16, uint16, uint32, int16)