// license that can be found in the LICENSE file.

//go:build mips || mipsle

#include "go_asm.h"
#include "textflag.h"

TEXT ·Compare(SB),NOSPLIT,$0-28
	MOVW	a_base+0(FP), R3
	MOVW	b_base+12(FP), R4
	MOVW	a_len+4(FP), R1
	MOVW	b_len+16(FP), R2
	BEQ	R3, R4, samebytes
	SGTU	R1, R2, R7
	MOVW	R1, R8
	CMOVN	R7, R2, R8	// R8 is min(R1, R2)

TEXT ·Compare<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-56
	// R0 = a_base (want in R0)
	// R1 = a_len  (want in R1)
	// R2 = a_cap  (unused)
	// R3 = b_base (want in R2)
	// R4 = b_len  (want in R3)
	// R5 = b_cap  (unused)
	MOVD	R3, R2
	MOVD	R4, R3
	B	cmpbody<>(SB)

TEXT runtime·cmpstring<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-40
	// R0 = a_base
	// R1 = a_len
	// R2 = b_base
	// R3 = b_len
	B	cmpbody<>(SB)

// On entry:

#include "textflag.h"

TEXT ·Compare<ABIInternal>(SB),NOSPLIT,$0-56
	// R4 = a_base
	// R5 = a_len
	// R6 = a_cap (unused)
	// R7 = b_base (want in R6)
	// R8 = b_len (want in R7)
	// R9 = b_cap (unused)
	MOVV	R7, R6
	MOVV	R8, R7
	JMP	cmpbody<>(SB)

TEXT runtime·cmpstring<ABIInternal>(SB),NOSPLIT,$0-40
	// R4 = a_base
	// R5 = a_len
	// R6 = b_base
	// R7 = b_len
	JMP	cmpbody<>(SB)

// On entry:
// R5 length of a

TEXT runtime·memequal<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-25
	// X10 = a_base
	// X11 = b_base
	// X12 = size
	JMP	memequal<>(SB)

// func memequal_varlen(a, b unsafe.Pointer) bool
TEXT runtime·memequal_varlen<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-17
	MOV	8(CTXT), X12    // compiler stores size at offset 8 in the closure
	// X10 = a_base
	// X11 = b_base
	JMP	memequal<>(SB)

#include "go_asm.h"
#include "textflag.h"

TEXT ·Compare(SB),NOSPLIT,$0-28
	MOVL	a_base+0(FP), SI
	MOVL	a_len+4(FP), BX
	MOVL	b_base+12(FP), DI
	MOVL	b_len+16(FP), DX
	LEAL	ret+24(FP), AX
	JMP	cmpbody<>(SB)

TEXT runtime·cmpstring(SB),NOSPLIT,$0-20
	MOVL	a_base+0(FP), SI
	MOVL	a_len+4(FP), BX
	MOVL	b_base+8(FP), DI
	MOVL	b_len+12(FP), DX
	LEAL	ret+16(FP), AX
	JMP	cmpbody<>(SB)

// input:

	Rax      uint64
	Rcx      uint64
	Rdx      uint64
	Rsi      uint64
	Rdi      uint64
	Orig_rax uint64
	Rip      uint64
	Cs       uint64
	Eflags   uint64
	Rsp      uint64
	Ss       uint64
	Fs_base  uint64
	Gs_base  uint64
	Ds       uint64
	Es       uint64
	Fs       uint64
	Gs       uint64
}

// PtraceGetRegsAmd64 fetches the registers used by amd64 binaries.

TEXT ·Index(SB),NOSPLIT|NOFRAME,$0-56
	LMG	a_base+0(FP), R1, R2  // R1=&s[0],   R2=len(s)
	LMG	b_base+24(FP), R3, R4 // R3=&sep[0], R4=len(sep)
	MOVD	$ret+48(FP), R5
	BR	indexbody<>(SB)

// Caller must confirm availability of vx facility before calling.
TEXT ·IndexString(SB),NOSPLIT|NOFRAME,$0-40
	LMG	a_base+0(FP), R1, R2  // R1=&s[0],   R2=len(s)
	LMG	b_base+16(FP), R3, R4 // R3=&sep[0], R4=len(sep)
	MOVD	$ret+32(FP), R5

TEXT ·Compare<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-56
	// X10 = a_base
	// X11 = a_len
	// X12 = a_cap (unused)
	// X13 = b_base (want in X12)
	// X14 = b_len (want in X13)
	// X15 = b_cap (unused)
	MOV	X13, X12
	MOV	X14, X13
	JMP	compare<>(SB)

TEXT runtime·cmpstring<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-40
	// X10 = a_base
	// X11 = a_len
	// X12 = b_base
	// X13 = b_len
	JMP	compare<>(SB)

// On entry:

#include "go_asm.h"
#include "textflag.h"

TEXT ·Index(SB),NOSPLIT,$0-56
	MOVD	a_base+0(FP), R0
	MOVD	a_len+8(FP), R1
	MOVD	b_base+24(FP), R2
	MOVD	b_len+32(FP), R3
	MOVD	$ret+48(FP), R9
	B	indexbody<>(SB)

TEXT ·IndexString(SB),NOSPLIT,$0-40
	MOVD	a_base+0(FP), R0
	MOVD	a_len+8(FP), R1
	MOVD	b_base+16(FP), R2
	MOVD	b_len+24(FP), R3
	MOVD	$ret+32(FP), R9
	B	indexbody<>(SB)

// input:

TEXT ·Compare<ABIInternal>(SB),NOSPLIT,$0-56
	// AX = a_base (want in SI)
	// BX = a_len  (want in BX)
	// CX = a_cap  (unused)
	// DI = b_base (want in DI)
	// SI = b_len  (want in DX)
	// R8 = b_cap  (unused)
	MOVQ	SI, DX
	MOVQ	AX, SI
	JMP	cmpbody<>(SB)

TEXT runtime·cmpstring<ABIInternal>(SB),NOSPLIT,$0-40
	// AX = a_base (want in SI)
	// BX = a_len  (want in BX)
	// CX = b_base (want in DI)
	// DI = b_len  (want in DX)