File size: 14,542 Bytes
fc11197 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 | // Copyright 2020 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.
package test
import (
"bufio"
"cmd/compile/internal/abi"
"cmd/compile/internal/base"
"cmd/compile/internal/ssagen"
"cmd/compile/internal/typecheck"
"cmd/compile/internal/types"
"cmd/internal/obj"
"cmd/internal/obj/x86"
"cmd/internal/src"
"fmt"
"os"
"testing"
)
// AMD64 registers available:
// - integer: RAX, RBX, RCX, RDI, RSI, R8, R9, r10, R11
// - floating point: X0 - X14
var configAMD64 = abi.NewABIConfig(9, 15, 0, 1)
func TestMain(m *testing.M) {
ssagen.Arch.LinkArch = &x86.Linkamd64
ssagen.Arch.REGSP = x86.REGSP
ssagen.Arch.MAXWIDTH = 1 << 50
types.MaxWidth = ssagen.Arch.MAXWIDTH
base.Ctxt = obj.Linknew(ssagen.Arch.LinkArch)
base.Ctxt.DiagFunc = base.Errorf
base.Ctxt.DiagFlush = base.FlushErrors
base.Ctxt.Bso = bufio.NewWriter(os.Stdout)
types.LocalPkg = types.NewPkg("p", "local")
types.LocalPkg.Prefix = "p"
types.PtrSize = ssagen.Arch.LinkArch.PtrSize
types.RegSize = ssagen.Arch.LinkArch.RegSize
typecheck.InitUniverse()
os.Exit(m.Run())
}
func TestABIUtilsBasic1(t *testing.T) {
// func(x int32) int32
i32 := types.Types[types.TINT32]
ft := mkFuncType(nil, []*types.Type{i32}, []*types.Type{i32})
// expected results
exp := makeExpectedDump(`
IN 0: R{ I0 } spilloffset: 0 typ: int32
OUT 0: R{ I0 } spilloffset: -1 typ: int32
offsetToSpillArea: 0 spillAreaSize: 8
`)
abitest(t, ft, exp)
}
func TestABIUtilsBasic2(t *testing.T) {
// func(p1 int8, p2 int16, p3 int32, p4 int64,
// p5 float32, p6 float32, p7 float64, p8 float64,
// p9 int8, p10 int16, p11 int32, p12 int64,
// p13 float32, p14 float32, p15 float64, p16 float64,
// p17 complex128, p18 complex128, p19 complex12, p20 complex128,
// p21 complex64, p22 int8, p23 in16, p24 int32, p25 int64,
// p26 int8, p27 in16, p28 int32, p29 int64)
// (r1 int32, r2 float64, r3 float64) {
i8 := types.Types[types.TINT8]
i16 := types.Types[types.TINT16]
i32 := types.Types[types.TINT32]
i64 := types.Types[types.TINT64]
f32 := types.Types[types.TFLOAT32]
f64 := types.Types[types.TFLOAT64]
c64 := types.Types[types.TCOMPLEX64]
c128 := types.Types[types.TCOMPLEX128]
ft := mkFuncType(nil,
[]*types.Type{
i8, i16, i32, i64,
f32, f32, f64, f64,
i8, i16, i32, i64,
f32, f32, f64, f64,
c128, c128, c128, c128, c64,
i8, i16, i32, i64,
i8, i16, i32, i64},
[]*types.Type{i32, f64, f64})
exp := makeExpectedDump(`
IN 0: R{ I0 } spilloffset: 0 typ: int8
IN 1: R{ I1 } spilloffset: 2 typ: int16
IN 2: R{ I2 } spilloffset: 4 typ: int32
IN 3: R{ I3 } spilloffset: 8 typ: int64
IN 4: R{ F0 } spilloffset: 16 typ: float32
IN 5: R{ F1 } spilloffset: 20 typ: float32
IN 6: R{ F2 } spilloffset: 24 typ: float64
IN 7: R{ F3 } spilloffset: 32 typ: float64
IN 8: R{ I4 } spilloffset: 40 typ: int8
IN 9: R{ I5 } spilloffset: 42 typ: int16
IN 10: R{ I6 } spilloffset: 44 typ: int32
IN 11: R{ I7 } spilloffset: 48 typ: int64
IN 12: R{ F4 } spilloffset: 56 typ: float32
IN 13: R{ F5 } spilloffset: 60 typ: float32
IN 14: R{ F6 } spilloffset: 64 typ: float64
IN 15: R{ F7 } spilloffset: 72 typ: float64
IN 16: R{ F8 F9 } spilloffset: 80 typ: complex128
IN 17: R{ F10 F11 } spilloffset: 96 typ: complex128
IN 18: R{ F12 F13 } spilloffset: 112 typ: complex128
IN 19: R{ } offset: 0 typ: complex128
IN 20: R{ } offset: 16 typ: complex64
IN 21: R{ I8 } spilloffset: 128 typ: int8
IN 22: R{ } offset: 24 typ: int16
IN 23: R{ } offset: 28 typ: int32
IN 24: R{ } offset: 32 typ: int64
IN 25: R{ } offset: 40 typ: int8
IN 26: R{ } offset: 42 typ: int16
IN 27: R{ } offset: 44 typ: int32
IN 28: R{ } offset: 48 typ: int64
OUT 0: R{ I0 } spilloffset: -1 typ: int32
OUT 1: R{ F0 } spilloffset: -1 typ: float64
OUT 2: R{ F1 } spilloffset: -1 typ: float64
offsetToSpillArea: 56 spillAreaSize: 136
`)
abitest(t, ft, exp)
}
func TestABIUtilsArrays(t *testing.T) {
// func(p1 [1]int32, p2 [0]int32, p3 [1][1]int32, p4 [2]int32)
// (r1 [2]int32, r2 [1]int32, r3 [0]int32, r4 [1][1]int32) {
i32 := types.Types[types.TINT32]
ae := types.NewArray(i32, 0)
a1 := types.NewArray(i32, 1)
a2 := types.NewArray(i32, 2)
aa1 := types.NewArray(a1, 1)
ft := mkFuncType(nil, []*types.Type{a1, ae, aa1, a2},
[]*types.Type{a2, a1, ae, aa1})
exp := makeExpectedDump(`
IN 0: R{ I0 } spilloffset: 0 typ: [1]int32
IN 1: R{ } offset: 0 typ: [0]int32
IN 2: R{ I1 } spilloffset: 4 typ: [1][1]int32
IN 3: R{ } offset: 0 typ: [2]int32
OUT 0: R{ } offset: 8 typ: [2]int32
OUT 1: R{ I0 } spilloffset: -1 typ: [1]int32
OUT 2: R{ } offset: 16 typ: [0]int32
OUT 3: R{ I1 } spilloffset: -1 typ: [1][1]int32
offsetToSpillArea: 16 spillAreaSize: 8
`)
abitest(t, ft, exp)
}
func TestABIUtilsStruct1(t *testing.T) {
// type s struct { f1 int8; f2 int8; f3 struct {}; f4 int8; f5 int16) }
// func(p1 int6, p2 s, p3 int64)
// (r1 s, r2 int8, r3 int32) {
i8 := types.Types[types.TINT8]
i16 := types.Types[types.TINT16]
i32 := types.Types[types.TINT32]
i64 := types.Types[types.TINT64]
s := mkstruct(i8, i8, mkstruct(), i8, i16)
ft := mkFuncType(nil, []*types.Type{i8, s, i64},
[]*types.Type{s, i8, i32})
exp := makeExpectedDump(`
IN 0: R{ I0 } spilloffset: 0 typ: int8
IN 1: R{ I1 I2 I3 I4 } spilloffset: 2 typ: struct { int8; int8; struct {}; int8; int16 }
IN 2: R{ I5 } spilloffset: 8 typ: int64
OUT 0: R{ I0 I1 I2 I3 } spilloffset: -1 typ: struct { int8; int8; struct {}; int8; int16 }
OUT 1: R{ I4 } spilloffset: -1 typ: int8
OUT 2: R{ I5 } spilloffset: -1 typ: int32
offsetToSpillArea: 0 spillAreaSize: 16
`)
abitest(t, ft, exp)
}
func TestABIUtilsStruct2(t *testing.T) {
// type s struct { f1 int64; f2 struct { } }
// type fs struct { f1 float64; f2 s; f3 struct { } }
// func(p1 s, p2 s, p3 fs)
// (r1 fs, r2 fs)
f64 := types.Types[types.TFLOAT64]
i64 := types.Types[types.TINT64]
s := mkstruct(i64, mkstruct())
fs := mkstruct(f64, s, mkstruct())
ft := mkFuncType(nil, []*types.Type{s, s, fs},
[]*types.Type{fs, fs})
exp := makeExpectedDump(`
IN 0: R{ I0 } spilloffset: 0 typ: struct { int64; struct {} }
IN 1: R{ I1 } spilloffset: 16 typ: struct { int64; struct {} }
IN 2: R{ F0 I2 } spilloffset: 32 typ: struct { float64; struct { int64; struct {} }; struct {} }
OUT 0: R{ F0 I0 } spilloffset: -1 typ: struct { float64; struct { int64; struct {} }; struct {} }
OUT 1: R{ F1 I1 } spilloffset: -1 typ: struct { float64; struct { int64; struct {} }; struct {} }
offsetToSpillArea: 0 spillAreaSize: 64
`)
abitest(t, ft, exp)
}
// TestABIUtilsEmptyFieldAtEndOfStruct is testing to make sure
// the abi code is doing the right thing for struct types that have
// a trailing zero-sized field (where the we need to add padding).
func TestABIUtilsEmptyFieldAtEndOfStruct(t *testing.T) {
// type s struct { f1 [2]int64; f2 struct { } }
// type s2 struct { f1 [3]int16; f2 struct { } }
// type fs struct { f1 float64; f s; f3 struct { } }
// func(p1 s, p2 s, p3 fs) (r1 fs, r2 fs)
f64 := types.Types[types.TFLOAT64]
i64 := types.Types[types.TINT64]
i16 := types.Types[types.TINT16]
tb := types.Types[types.TBOOL]
ab2 := types.NewArray(tb, 2)
a2 := types.NewArray(i64, 2)
a3 := types.NewArray(i16, 3)
empty := mkstruct()
s := mkstruct(a2, empty)
s2 := mkstruct(a3, empty)
fs := mkstruct(f64, s, empty)
ft := mkFuncType(nil, []*types.Type{s, ab2, s2, fs, fs},
[]*types.Type{fs, ab2, fs})
exp := makeExpectedDump(`
IN 0: R{ } offset: 0 typ: struct { [2]int64; struct {} }
IN 1: R{ } offset: 24 typ: [2]bool
IN 2: R{ } offset: 26 typ: struct { [3]int16; struct {} }
IN 3: R{ } offset: 40 typ: struct { float64; struct { [2]int64; struct {} }; struct {} }
IN 4: R{ } offset: 80 typ: struct { float64; struct { [2]int64; struct {} }; struct {} }
OUT 0: R{ } offset: 120 typ: struct { float64; struct { [2]int64; struct {} }; struct {} }
OUT 1: R{ } offset: 160 typ: [2]bool
OUT 2: R{ } offset: 168 typ: struct { float64; struct { [2]int64; struct {} }; struct {} }
offsetToSpillArea: 208 spillAreaSize: 0
`)
abitest(t, ft, exp)
// Test that NumParamRegs doesn't assign registers to trailing padding.
typ := mkstruct(i64, i64, mkstruct())
have := configAMD64.NumParamRegs(typ)
if have != 2 {
t.Errorf("NumParams(%v): have %v, want %v", typ, have, 2)
}
}
func TestABIUtilsSliceString(t *testing.T) {
// func(p1 []int32, p2 int8, p3 []int32, p4 int8, p5 string,
// p6 int64, p6 []intr32) (r1 string, r2 int64, r3 string, r4 []int32)
i32 := types.Types[types.TINT32]
sli32 := types.NewSlice(i32)
str := types.Types[types.TSTRING]
i8 := types.Types[types.TINT8]
i64 := types.Types[types.TINT64]
ft := mkFuncType(nil, []*types.Type{sli32, i8, sli32, i8, str, i8, i64, sli32},
[]*types.Type{str, i64, str, sli32})
exp := makeExpectedDump(`
IN 0: R{ I0 I1 I2 } spilloffset: 0 typ: []int32
IN 1: R{ I3 } spilloffset: 24 typ: int8
IN 2: R{ I4 I5 I6 } spilloffset: 32 typ: []int32
IN 3: R{ I7 } spilloffset: 56 typ: int8
IN 4: R{ } offset: 0 typ: string
IN 5: R{ I8 } spilloffset: 57 typ: int8
IN 6: R{ } offset: 16 typ: int64
IN 7: R{ } offset: 24 typ: []int32
OUT 0: R{ I0 I1 } spilloffset: -1 typ: string
OUT 1: R{ I2 } spilloffset: -1 typ: int64
OUT 2: R{ I3 I4 } spilloffset: -1 typ: string
OUT 3: R{ I5 I6 I7 } spilloffset: -1 typ: []int32
offsetToSpillArea: 48 spillAreaSize: 64
`)
abitest(t, ft, exp)
}
func TestABIUtilsMethod(t *testing.T) {
// type s1 struct { f1 int16; f2 int16; f3 int16 }
// func(p1 *s1, p2 [7]*s1, p3 float64, p4 int16, p5 int16, p6 int16)
// (r1 [7]*s1, r2 float64, r3 int64)
i16 := types.Types[types.TINT16]
i64 := types.Types[types.TINT64]
f64 := types.Types[types.TFLOAT64]
s1 := mkstruct(i16, i16, i16)
ps1 := types.NewPtr(s1)
a7 := types.NewArray(ps1, 7)
ft := mkFuncType(s1, []*types.Type{ps1, a7, f64, i16, i16, i16},
[]*types.Type{a7, f64, i64})
exp := makeExpectedDump(`
IN 0: R{ I0 I1 I2 } spilloffset: 0 typ: struct { int16; int16; int16 }
IN 1: R{ I3 } spilloffset: 8 typ: *struct { int16; int16; int16 }
IN 2: R{ } offset: 0 typ: [7]*struct { int16; int16; int16 }
IN 3: R{ F0 } spilloffset: 16 typ: float64
IN 4: R{ I4 } spilloffset: 24 typ: int16
IN 5: R{ I5 } spilloffset: 26 typ: int16
IN 6: R{ I6 } spilloffset: 28 typ: int16
OUT 0: R{ } offset: 56 typ: [7]*struct { int16; int16; int16 }
OUT 1: R{ F0 } spilloffset: -1 typ: float64
OUT 2: R{ I0 } spilloffset: -1 typ: int64
offsetToSpillArea: 112 spillAreaSize: 32
`)
abitest(t, ft, exp)
}
func TestABIUtilsInterfaces(t *testing.T) {
// type s1 { f1 int16; f2 int16; f3 bool)
// type nei interface { ...() string }
// func(p1 s1, p2 interface{}, p3 interface{}, p4 nei,
// p5 *interface{}, p6 nei, p7 int64)
// (r1 interface{}, r2 nei, r3 bool)
ei := types.Types[types.TINTER] // interface{}
pei := types.NewPtr(ei) // *interface{}
fldt := mkFuncType(types.FakeRecvType(), []*types.Type{},
[]*types.Type{types.Types[types.TSTRING]})
field := types.NewField(src.NoXPos, typecheck.Lookup("F"), fldt)
nei := types.NewInterface([]*types.Field{field})
i16 := types.Types[types.TINT16]
tb := types.Types[types.TBOOL]
s1 := mkstruct(i16, i16, tb)
ft := mkFuncType(nil, []*types.Type{s1, ei, ei, nei, pei, nei, i16},
[]*types.Type{ei, nei, pei})
exp := makeExpectedDump(`
IN 0: R{ I0 I1 I2 } spilloffset: 0 typ: struct { int16; int16; bool }
IN 1: R{ I3 I4 } spilloffset: 8 typ: interface {}
IN 2: R{ I5 I6 } spilloffset: 24 typ: interface {}
IN 3: R{ I7 I8 } spilloffset: 40 typ: interface { F() string }
IN 4: R{ } offset: 0 typ: *interface {}
IN 5: R{ } offset: 8 typ: interface { F() string }
IN 6: R{ } offset: 24 typ: int16
OUT 0: R{ I0 I1 } spilloffset: -1 typ: interface {}
OUT 1: R{ I2 I3 } spilloffset: -1 typ: interface { F() string }
OUT 2: R{ I4 } spilloffset: -1 typ: *interface {}
offsetToSpillArea: 32 spillAreaSize: 56
`)
abitest(t, ft, exp)
}
func TestABINumParamRegs(t *testing.T) {
i8 := types.Types[types.TINT8]
i16 := types.Types[types.TINT16]
i32 := types.Types[types.TINT32]
i64 := types.Types[types.TINT64]
f32 := types.Types[types.TFLOAT32]
f64 := types.Types[types.TFLOAT64]
c64 := types.Types[types.TCOMPLEX64]
c128 := types.Types[types.TCOMPLEX128]
s := mkstruct(i8, i8, mkstruct(), i8, i16)
a := mkstruct(s, s, s)
nrtest(t, i8, 1)
nrtest(t, i16, 1)
nrtest(t, i32, 1)
nrtest(t, i64, 1)
nrtest(t, f32, 1)
nrtest(t, f64, 1)
nrtest(t, c64, 2)
nrtest(t, c128, 2)
nrtest(t, s, 4)
nrtest(t, a, 12)
}
func TestABIUtilsComputePadding(t *testing.T) {
// type s1 { f1 int8; f2 int16; f3 struct{}; f4 int32; f5 int64 }
i8 := types.Types[types.TINT8]
i16 := types.Types[types.TINT16]
i32 := types.Types[types.TINT32]
i64 := types.Types[types.TINT64]
emptys := mkstruct()
s1 := mkstruct(i8, i16, emptys, i32, i64)
// func (p1 int32, p2 s1, p3 emptys, p4 [1]int32)
a1 := types.NewArray(i32, 1)
ft := mkFuncType(nil, []*types.Type{i32, s1, emptys, a1}, nil)
// Run abitest() just to document what we're expected to see.
exp := makeExpectedDump(`
IN 0: R{ I0 } spilloffset: 0 typ: int32
IN 1: R{ I1 I2 I3 I4 } spilloffset: 8 typ: struct { int8; int16; struct {}; int32; int64 }
IN 2: R{ } offset: 0 typ: struct {}
IN 3: R{ I5 } spilloffset: 24 typ: [1]int32
offsetToSpillArea: 0 spillAreaSize: 32
`)
abitest(t, ft, exp)
// Analyze with full set of registers, then call ComputePadding
// on the second param, verifying the results.
regRes := configAMD64.ABIAnalyze(ft, false)
padding := make([]uint64, 32)
parm := regRes.InParams()[1]
padding = parm.ComputePadding(padding)
want := "[1 0 0 0]"
got := fmt.Sprintf("%+v", padding)
if got != want {
t.Errorf("padding mismatch: wanted %q got %q\n", want, got)
}
}
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