// with the core of the assembler.

package arch

import (
	"cmd/internal/obj"
	"cmd/internal/obj/loong64"
	"errors"
	"fmt"
)

func jumpLoong64(word string) bool {
	switch word {
	case "BEQ", "BFPF", "BFPT", "BLTZ", "BGEZ", "BLEZ", "BGTZ", "BLT", "BLTU", "JIRL", "BNE", "BGE", "BGEU", "JMP", "JAL", "CALL":
		return true
	}
	return false
}

// IsLoong64RDTIME reports whether the op (as defined by an loong64.A*

	SLLV	$4, R4, R5		// 85104100
	SLLV	$4, R4			// 84104100
	ROTRV	$4, R4, R5		// 85104d00
	ROTRV	$4, R4			// 84104d00
	SYSCALL				// 00002b00
	BEQ	R4, R5, 1(PC)		// 85040058
	BEQ	R4, 1(PC)		// 80040040
	BEQ	R4, R0, 1(PC)		// 80040040
	BEQ	R0, R4, 1(PC)		// 80040040
	BNE	R4, R5, 1(PC)		// 8504005c
	BNE	R4, 1(PC)		// 80040044
	BNE	R4, R0, 1(PC)		// 80040044
	BNE	R0, R4, 1(PC)		// 80040044

	SLLI	$64, X5, X6			// ERROR "immediate out of range 0 to 63"
	SRLI	$64, X5, X6			// ERROR "immediate out of range 0 to 63"
	SRAI	$64, X5, X6			// ERROR "immediate out of range 0 to 63"
	BEQ	X5, X6, $1			// ERROR "instruction with branch-like opcode lacks destination"
	BEQ	X5, X6, 31(X10)			// ERROR "instruction with branch-like opcode lacks destination"
	RORI	$-1, X5, X6			// ERROR "immediate out of range 0 to 63"

	IPM	R12                    // b22200c0

	SPM	R1                     // 0410
	SPM	R10                    // 04a0

	BRC	$7, 0(PC)              // a7740000
	BNE	0(PC)                  // a7740000
	BEQ	0(PC)                  // a7840000
	BLT	0(PC)                  // a7440000
	BLE	0(PC)                  // a7c40000
	BGT	0(PC)                  // a7240000
	BGE	0(PC)                  // a7a40000

	SRA	$1, X5, X6				// 13d31240
	SRA	$1, X5					// 93d21240

	// 2.5: Control Transfer Instructions
	JAL	X5, 2(PC)				// ef028000
	JALR	X6, (X5)				// 67830200
	JALR	X6, 4(X5)				// 67834200
	BEQ	X5, X6, 2(PC)				// 63846200
	BNE	X5, X6, 2(PC)				// 63946200
	BLT	X5, X6, 2(PC)				// 63c46200
	BLTU	X5, X6, 2(PC)				// 63e46200
	BGE	X5, X6, 2(PC)				// 63d46200
	BGEU	X5, X6, 2(PC)				// 63f46200