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🌱 A minimal programming language and compiler. git.urbach.dev/cli/q
high-performance programming-language compiler
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108package x86_test
import ( "testing"
"git.urbach.dev/cli/q/src/cpu" "git.urbach.dev/cli/q/src/x86" "git.urbach.dev/go/assert")
func TestMoveRegisterNumber(t *testing.T) { usagePatterns := []struct { Register cpu.Register Number int Code []byte }{ // 32 bits {x86.R0, 0x7FFFFFFF, []byte{0xB8, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R1, 0x7FFFFFFF, []byte{0xB9, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R2, 0x7FFFFFFF, []byte{0xBA, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R3, 0x7FFFFFFF, []byte{0xBB, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.SP, 0x7FFFFFFF, []byte{0xBC, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R5, 0x7FFFFFFF, []byte{0xBD, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R6, 0x7FFFFFFF, []byte{0xBE, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R7, 0x7FFFFFFF, []byte{0xBF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R8, 0x7FFFFFFF, []byte{0x41, 0xB8, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R9, 0x7FFFFFFF, []byte{0x41, 0xB9, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R10, 0x7FFFFFFF, []byte{0x41, 0xBA, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R11, 0x7FFFFFFF, []byte{0x41, 0xBB, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R12, 0x7FFFFFFF, []byte{0x41, 0xBC, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R13, 0x7FFFFFFF, []byte{0x41, 0xBD, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R14, 0x7FFFFFFF, []byte{0x41, 0xBE, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R15, 0x7FFFFFFF, []byte{0x41, 0xBF, 0xFF, 0xFF, 0xFF, 0x7F}},
// 64 bits {x86.R0, 0x7FFFFFFFFFFFFFFF, []byte{0x48, 0xB8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R1, 0x7FFFFFFFFFFFFFFF, []byte{0x48, 0xB9, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R2, 0x7FFFFFFFFFFFFFFF, []byte{0x48, 0xBA, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R3, 0x7FFFFFFFFFFFFFFF, []byte{0x48, 0xBB, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.SP, 0x7FFFFFFFFFFFFFFF, []byte{0x48, 0xBC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R5, 0x7FFFFFFFFFFFFFFF, []byte{0x48, 0xBD, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R6, 0x7FFFFFFFFFFFFFFF, []byte{0x48, 0xBE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R7, 0x7FFFFFFFFFFFFFFF, []byte{0x48, 0xBF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R8, 0x7FFFFFFFFFFFFFFF, []byte{0x49, 0xB8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R9, 0x7FFFFFFFFFFFFFFF, []byte{0x49, 0xB9, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R10, 0x7FFFFFFFFFFFFFFF, []byte{0x49, 0xBA, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R11, 0x7FFFFFFFFFFFFFFF, []byte{0x49, 0xBB, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R12, 0x7FFFFFFFFFFFFFFF, []byte{0x49, 0xBC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R13, 0x7FFFFFFFFFFFFFFF, []byte{0x49, 0xBD, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R14, 0x7FFFFFFFFFFFFFFF, []byte{0x49, 0xBE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}}, {x86.R15, 0x7FFFFFFFFFFFFFFF, []byte{0x49, 0xBF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F}},
// Negative numbers {x86.R0, -1, []byte{0x48, 0xC7, 0xC0, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R1, -1, []byte{0x48, 0xC7, 0xC1, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R2, -1, []byte{0x48, 0xC7, 0xC2, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R3, -1, []byte{0x48, 0xC7, 0xC3, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.SP, -1, []byte{0x48, 0xC7, 0xC4, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R5, -1, []byte{0x48, 0xC7, 0xC5, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R6, -1, []byte{0x48, 0xC7, 0xC6, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R7, -1, []byte{0x48, 0xC7, 0xC7, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R8, -1, []byte{0x49, 0xC7, 0xC0, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R9, -1, []byte{0x49, 0xC7, 0xC1, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R10, -1, []byte{0x49, 0xC7, 0xC2, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R11, -1, []byte{0x49, 0xC7, 0xC3, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R12, -1, []byte{0x49, 0xC7, 0xC4, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R13, -1, []byte{0x49, 0xC7, 0xC5, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R14, -1, []byte{0x49, 0xC7, 0xC6, 0xFF, 0xFF, 0xFF, 0xFF}}, {x86.R15, -1, []byte{0x49, 0xC7, 0xC7, 0xFF, 0xFF, 0xFF, 0xFF}}, }
for _, pattern := range usagePatterns { t.Logf("mov %s, %x", pattern.Register, pattern.Number) code := x86.MoveRegisterNumber(nil, pattern.Register, pattern.Number) assert.DeepEqual(t, code, pattern.Code) }}
func TestMoveRegisterRegister(t *testing.T) { usagePatterns := []struct { Left cpu.Register Right cpu.Register Code []byte }{ {x86.R0, x86.R15, []byte{0x4C, 0x89, 0xF8}}, {x86.R1, x86.R14, []byte{0x4C, 0x89, 0xF1}}, {x86.R2, x86.R13, []byte{0x4C, 0x89, 0xEA}}, {x86.R3, x86.R12, []byte{0x4C, 0x89, 0xE3}}, {x86.SP, x86.R11, []byte{0x4C, 0x89, 0xDC}}, {x86.R5, x86.R10, []byte{0x4C, 0x89, 0xD5}}, {x86.R6, x86.R9, []byte{0x4C, 0x89, 0xCE}}, {x86.R7, x86.R8, []byte{0x4C, 0x89, 0xC7}}, {x86.R8, x86.R7, []byte{0x49, 0x89, 0xF8}}, {x86.R9, x86.R6, []byte{0x49, 0x89, 0xF1}}, {x86.R10, x86.R5, []byte{0x49, 0x89, 0xEA}}, {x86.R11, x86.SP, []byte{0x49, 0x89, 0xE3}}, {x86.R12, x86.R3, []byte{0x49, 0x89, 0xDC}}, {x86.R13, x86.R2, []byte{0x49, 0x89, 0xD5}}, {x86.R14, x86.R1, []byte{0x49, 0x89, 0xCE}}, {x86.R15, x86.R0, []byte{0x49, 0x89, 0xC7}}, }
for _, pattern := range usagePatterns { t.Logf("mov %s, %s", pattern.Left, pattern.Right) code := x86.MoveRegisterRegister(nil, pattern.Left, pattern.Right) assert.DeepEqual(t, code, pattern.Code) }}