package x64_test

import (
	"testing"

	"git.akyoto.dev/cli/q/src/build/arch/x64"
	"git.akyoto.dev/cli/q/src/build/cpu"
	"git.akyoto.dev/go/assert"
)

func TestSubRegisterNumber(t *testing.T) {
	usagePatterns := []struct {
		Register cpu.Register
		Number   int
		Code     []byte
	}{
		{x64.RAX, 1, []byte{0x48, 0x83, 0xE8, 0x01}},
		{x64.RCX, 1, []byte{0x48, 0x83, 0xE9, 0x01}},
		{x64.RDX, 1, []byte{0x48, 0x83, 0xEA, 0x01}},
		{x64.RBX, 1, []byte{0x48, 0x83, 0xEB, 0x01}},
		{x64.RSP, 1, []byte{0x48, 0x83, 0xEC, 0x01}},
		{x64.RBP, 1, []byte{0x48, 0x83, 0xED, 0x01}},
		{x64.RSI, 1, []byte{0x48, 0x83, 0xEE, 0x01}},
		{x64.RDI, 1, []byte{0x48, 0x83, 0xEF, 0x01}},
		{x64.R8, 1, []byte{0x49, 0x83, 0xE8, 0x01}},
		{x64.R9, 1, []byte{0x49, 0x83, 0xE9, 0x01}},
		{x64.R10, 1, []byte{0x49, 0x83, 0xEA, 0x01}},
		{x64.R11, 1, []byte{0x49, 0x83, 0xEB, 0x01}},
		{x64.R12, 1, []byte{0x49, 0x83, 0xEC, 0x01}},
		{x64.R13, 1, []byte{0x49, 0x83, 0xED, 0x01}},
		{x64.R14, 1, []byte{0x49, 0x83, 0xEE, 0x01}},
		{x64.R15, 1, []byte{0x49, 0x83, 0xEF, 0x01}},

		{x64.RAX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xE8, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.RCX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xE9, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.RDX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEA, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.RBX, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEB, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.RSP, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEC, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.RBP, 0x7FFFFFFF, []byte{0x48, 0x81, 0xED, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.RSI, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEE, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.RDI, 0x7FFFFFFF, []byte{0x48, 0x81, 0xEF, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.R8, 0x7FFFFFFF, []byte{0x49, 0x81, 0xE8, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.R9, 0x7FFFFFFF, []byte{0x49, 0x81, 0xE9, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.R10, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEA, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.R11, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEB, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.R12, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEC, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.R13, 0x7FFFFFFF, []byte{0x49, 0x81, 0xED, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.R14, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEE, 0xFF, 0xFF, 0xFF, 0x7F}},
		{x64.R15, 0x7FFFFFFF, []byte{0x49, 0x81, 0xEF, 0xFF, 0xFF, 0xFF, 0x7F}},
	}

	for _, pattern := range usagePatterns {
		t.Logf("sub %s, %x", pattern.Register, pattern.Number)
		code := x64.SubRegisterNumber(nil, pattern.Register, pattern.Number)
		assert.DeepEqual(t, code, pattern.Code)
	}
}