Enhance

Author: Untel

Makefile

@@ -1,4 +1,9 @@
-SRCS			= ft_strlen.s ft_strcpy.s
+SRCS			=	ft_strlen.s\
+					ft_strcpy.s\
+					ft_strcmp.s\
+					ft_write.s\
+					ft_read.s
+
 SRCC			= main.c
 NAME			= libasm.a
 

ft_read.s

@@ -0,0 +1,13 @@
+global _ft_read
+
+section .text
+
+_ft_read:
+	mov rax, 0x02000003 ;4th instruct on eax
+	syscall
+	jb .err
+	ret
+
+.err:
+	mov rax, -1
+	ret

ft_strcmp.s

@@ -0,0 +1,31 @@
+global _ft_strcmp
+
+section .text
+
+_ft_strcmp: ;rdi rsi
+	mov rax, 0
+
+.loop:
+	mov bl, [rsi]
+	mov bh, [rdi]
+	cmp bl, bh
+	jg .sup
+	jl .inf
+	cmp bl, 0
+	je .end
+	cmp bh, 0
+	je .end
+	inc rdi
+	inc rsi
+	jmp .loop
+
+.sup:
+	mov rax, -1
+	ret
+
+.inf:
+	mov rax, 1
+	ret
+
+.end:
+	ret

ft_strdup.s

@@ -0,0 +1,13 @@
+global _ft_write
+
+section .text
+
+_ft_write:
+	mov rax, 0x02000004 ;4th instruct on eax
+	syscall
+	jb .err
+	ret
+
+.err:
+	mov rax, -1
+	ret

ft_write.s

@@ -2,9 +2,13 @@
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <fcntl.h>
 
 int	ft_strlen(const char *str);
 char *ft_strcpy(char *dest, char *src);
+int	ft_strcmp(char *a, char *b);
+int ft_write(int fd, char *a, int len);
+int ft_read(int fd, char *a, int len);
 
 void
 	test_strlen(char *str)
@@ -22,6 +26,42 @@ void
 	printf("\n%s = ft_strcpy(dest[20], \"%s\")\n", dest, str);
 }
 
+void
+	test_strcmp(char *a, char *b)
+{
+	printf("\n%d = ft_strcmp(\"%s\", \"%s\")\n", ft_strcmp(a, b), a, b);
+	printf("%d = strcmp(\"%s\", \"%s\")\n", strcmp(a, b), a, b);
+}
+
+void
+	test_write(int fd, char *str, int len)
+{
+	printf("\nft_write(%d, '%s', %d) ==> '", fd, str, len);
+	fflush(stdout);
+	int ret = ft_write(fd, str, len);
+	printf("' (%d)\n", ret);
+	printf("write(%d, '%s', %d) ==> '", fd, str, len);
+	fflush(stdout);
+	int ret2 = (int)write(fd, str, len);
+	printf("' (%d)\n", ret2);
+}
+
+void
+	test_read(char *path, int buffsize)
+{
+	int fd = open(path, O_RDONLY);
+	int fd2 = open(path, O_RDONLY);
+	char buffer[buffsize + 1];
+	char buffer2[buffsize + 1];
+	// char buffer2[buffsize];
+	memset(buffer, 0, buffsize + 1);
+	memset(buffer2, 0, buffsize + 1);
+	int ret = (int)read(fd, buffer, buffsize);
+	int ret2 = ft_read(fd2, buffer2, buffsize);
+	printf("\nread(%d, [BUFFER], %d) ==> (%d) '%s'", fd, buffsize, ret, buffer);
+	printf("\nft_read(%d, [BUFFER], %d) ==> (%d) '%s'\n", fd, buffsize, ret2, buffer2);
+}
+
 
 int
 	main(int ac, char **av)
@@ -31,6 +71,17 @@ int
 	test_strlen("Bonjour");
 	test_strlen("");
 	test_strlen("a");
-
 	test_strcpy("Bonjour");
+	test_strcmp("Abc", "Abc");
+	test_strcmp("Abc", "Abd");
+	test_strcmp("Abc", "Abce");
+	test_strcmp("aaa", "aaa");
+	test_strcmp("c", "b");
+	test_write(1, "Bonjour", strlen("Bonjour"));
+	test_write(1, "", 1);
+	test_write(1, NULL, 1);
+	test_write(-1, "yo", 2);
+
+	test_read("ft_read.s", 10);
+	test_read("", 10);
 }