Added more tests
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10
src/build/arch/x64/Add.go
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10
src/build/arch/x64/Add.go
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@ -0,0 +1,10 @@
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package x64
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import (
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"git.akyoto.dev/cli/q/src/build/cpu"
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)
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// AddRegNum adds a number to the given register.
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func AddRegNum(code []byte, destination cpu.Register, number int) []byte {
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return numberToRegister(0x83, 0x81, 0b000, code, destination, number)
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}
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56
src/build/arch/x64/Add_test.go
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56
src/build/arch/x64/Add_test.go
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package x64_test
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import (
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"testing"
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"git.akyoto.dev/cli/q/src/build/arch/x64"
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"git.akyoto.dev/cli/q/src/build/cpu"
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"git.akyoto.dev/go/assert"
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)
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func TestAddRegisterNumber(t *testing.T) {
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usagePatterns := []struct {
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Register cpu.Register
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Number int
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Code []byte
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}{
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{x64.RAX, 1, []byte{0x48, 0x83, 0xc0, 0x01}},
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{x64.RCX, 1, []byte{0x48, 0x83, 0xc1, 0x01}},
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{x64.RDX, 1, []byte{0x48, 0x83, 0xc2, 0x01}},
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{x64.RBX, 1, []byte{0x48, 0x83, 0xc3, 0x01}},
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{x64.RSP, 1, []byte{0x48, 0x83, 0xc4, 0x01}},
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{x64.RBP, 1, []byte{0x48, 0x83, 0xc5, 0x01}},
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{x64.RSI, 1, []byte{0x48, 0x83, 0xc6, 0x01}},
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{x64.RDI, 1, []byte{0x48, 0x83, 0xc7, 0x01}},
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{x64.R8, 1, []byte{0x49, 0x83, 0xc0, 0x01}},
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{x64.R9, 1, []byte{0x49, 0x83, 0xc1, 0x01}},
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{x64.R10, 1, []byte{0x49, 0x83, 0xc2, 0x01}},
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{x64.R11, 1, []byte{0x49, 0x83, 0xc3, 0x01}},
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{x64.R12, 1, []byte{0x49, 0x83, 0xc4, 0x01}},
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{x64.R13, 1, []byte{0x49, 0x83, 0xc5, 0x01}},
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{x64.R14, 1, []byte{0x49, 0x83, 0xc6, 0x01}},
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{x64.R15, 1, []byte{0x49, 0x83, 0xc7, 0x01}},
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{x64.RAX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xC0, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RCX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xC1, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RDX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xC2, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RBX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xC3, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RSP, 0x7FFFFFFF, []byte{0x48, 0x81, 0xC4, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RBP, 0x7FFFFFFF, []byte{0x48, 0x81, 0xC5, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RSI, 0x7FFFFFFF, []byte{0x48, 0x81, 0xC6, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RDI, 0x7FFFFFFF, []byte{0x48, 0x81, 0xC7, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R8, 0x7FFFFFFF, []byte{0x49, 0x81, 0xC0, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R9, 0x7FFFFFFF, []byte{0x49, 0x81, 0xC1, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R10, 0x7FFFFFFF, []byte{0x49, 0x81, 0xC2, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R11, 0x7FFFFFFF, []byte{0x49, 0x81, 0xC3, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R12, 0x7FFFFFFF, []byte{0x49, 0x81, 0xC4, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R13, 0x7FFFFFFF, []byte{0x49, 0x81, 0xC5, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R14, 0x7FFFFFFF, []byte{0x49, 0x81, 0xC6, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R15, 0x7FFFFFFF, []byte{0x49, 0x81, 0xC7, 0xFF, 0xFF, 0xFF, 0x7F}},
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}
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for _, pattern := range usagePatterns {
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t.Logf("add %s, %x", pattern.Register, pattern.Number)
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code := x64.AddRegNum(nil, pattern.Register, pattern.Number)
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assert.DeepEqual(t, code, pattern.Code)
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}
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}
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@ -3,26 +3,26 @@ package x64
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import "git.akyoto.dev/cli/q/src/build/cpu"
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const (
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rax = iota
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rcx
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rdx
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rbx
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rsp
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rbp
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rsi
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rdi
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r8
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r9
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r10
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r11
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r12
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r13
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r14
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r15
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RAX = iota
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RCX
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RDX
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RBX
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RSP
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RBP
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RSI
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RDI
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R8
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R9
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R10
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R11
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R12
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R13
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R14
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R15
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)
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const SyscallReturn = rax
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const SyscallReturn = RAX
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var GeneralRegisters = []cpu.Register{rbx, rbp, r12, r13, r14, r15}
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var SyscallRegisters = []cpu.Register{rax, rdi, rsi, rdx, r10, r8, r9}
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var ReturnValueRegisters = []cpu.Register{rax, rcx, r11}
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var GeneralRegisters = []cpu.Register{RBX, RBP, R12, R13, R14, R15}
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var SyscallRegisters = []cpu.Register{RAX, RDI, RSI, RDX, R10, R8, R9}
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var ReturnValueRegisters = []cpu.Register{RAX, RCX, R11}
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@ -4,11 +4,6 @@ import (
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"git.akyoto.dev/cli/q/src/build/cpu"
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)
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// AddRegNum adds a number to the given register.
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func AddRegNum(code []byte, destination cpu.Register, number int) []byte {
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return numberToRegister(0x83, 0x81, 0b000, code, destination, number)
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}
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// SubRegNum subtracts a number from the given register.
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func SubRegNum(code []byte, destination cpu.Register, number int) []byte {
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return numberToRegister(0x83, 0x81, 0b101, code, destination, number)
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56
src/build/arch/x64/Sub_test.go
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56
src/build/arch/x64/Sub_test.go
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package x64_test
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import (
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"testing"
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"git.akyoto.dev/cli/q/src/build/arch/x64"
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"git.akyoto.dev/cli/q/src/build/cpu"
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"git.akyoto.dev/go/assert"
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)
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func TestSubRegisterNumber(t *testing.T) {
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usagePatterns := []struct {
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Register cpu.Register
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Number int
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Code []byte
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}{
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{x64.RAX, 1, []byte{0x48, 0x83, 0xE8, 0x01}},
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{x64.RCX, 1, []byte{0x48, 0x83, 0xE9, 0x01}},
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{x64.RDX, 1, []byte{0x48, 0x83, 0xEA, 0x01}},
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{x64.RBX, 1, []byte{0x48, 0x83, 0xEB, 0x01}},
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{x64.RSP, 1, []byte{0x48, 0x83, 0xEC, 0x01}},
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{x64.RBP, 1, []byte{0x48, 0x83, 0xED, 0x01}},
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{x64.RSI, 1, []byte{0x48, 0x83, 0xEE, 0x01}},
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{x64.RDI, 1, []byte{0x48, 0x83, 0xEF, 0x01}},
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{x64.R8, 1, []byte{0x49, 0x83, 0xE8, 0x01}},
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{x64.R9, 1, []byte{0x49, 0x83, 0xE9, 0x01}},
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{x64.R10, 1, []byte{0x49, 0x83, 0xEA, 0x01}},
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{x64.R11, 1, []byte{0x49, 0x83, 0xEB, 0x01}},
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{x64.R12, 1, []byte{0x49, 0x83, 0xEC, 0x01}},
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{x64.R13, 1, []byte{0x49, 0x83, 0xED, 0x01}},
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{x64.R14, 1, []byte{0x49, 0x83, 0xEE, 0x01}},
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{x64.R15, 1, []byte{0x49, 0x83, 0xEF, 0x01}},
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{x64.RAX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xE8, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RCX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xE9, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RDX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEA, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RBX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEB, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RSP, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEC, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RBP, 0x7FFFFFFF, []byte{0x48, 0x81, 0xED, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RSI, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEE, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.RDI, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEF, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R8, 0x7FFFFFFF, []byte{0x49, 0x81, 0xE8, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R9, 0x7FFFFFFF, []byte{0x49, 0x81, 0xE9, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R10, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEA, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R11, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEB, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R12, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEC, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R13, 0x7FFFFFFF, []byte{0x49, 0x81, 0xED, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R14, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEE, 0xFF, 0xFF, 0xFF, 0x7F}},
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{x64.R15, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEF, 0xFF, 0xFF, 0xFF, 0x7F}},
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}
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for _, pattern := range usagePatterns {
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t.Logf("sub %s, %x", pattern.Register, pattern.Number)
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code := x64.SubRegNum(nil, pattern.Register, pattern.Number)
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assert.DeepEqual(t, code, pattern.Code)
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}
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}
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