/*
	Copyright 2022 Gabriel Jensen.
	This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
	If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/

#include <rgo.h>

.global rgo_streq

rgo_streq:
	/*
		char const * lstr
		char const * rstr
	*/
#if defined(__x86_64__)
	/* rax: Address of the current input character. */
	movq %rdi,%rax
	/* rsi: Address of the current output character. */
	movq %rsi,%rsi
	/* rdx: Current input character. */
	/* rcx: Current output character. */
.loop:
	movb (%rax),%dl
	movb (%rsi),%cl
	cmpb %dl,%cl
	jne .neq
	testb %dl,%dl /* Check if we have reached the null-terminator. */
	jz .eq
	incq %rax
	incq %rsi
	jmp .loop
.eq:
	mov $0x1,%rax
	ret
.neq:
	mov $0x0,%rax
	ret
#endif