add other basic functions and test with them

Makefile

@@ -19,7 +19,7 @@ FLAGS = -felf64
 all: $(NAME)
 	
 test: test.c $(NAME)
-	clang -z noexecstack test.c $(NAME) -o test
+	clang -z noexecstack test.c -L. -lasm  -o test -g
 
 $(NAME): $(OBJS_DIR) $(OBJS)
 	ar rcs $@ $(OBJS)

patate.c

@@ -0,0 +1,7 @@
+#include <string.h>
+#include <stdio.h>
+
+int main(void)
+{
+	printf("%d\n", strcmp("coucou", "c"));
+}

srcs/ft_read.s

@@ -0,0 +1,19 @@
+global ft_read
+extern __errno_location
+section .text
+
+ft_read:
+	mov rax, 0 ;syscall number for read, args are already set at the right place
+	syscall
+
+	cmp rax, 0 ; if return is < 0, it's an error in negative
+	jg success
+
+	neg rax ; inv errno, and set errno
+	mov edi, eax
+	call __errno_location wrt ..plt
+	mov [rax], edi
+	mov rax, -1
+
+success:
+	ret

srcs/ft_strcmp.s

@@ -0,0 +1,48 @@
+section .text
+	global ft_strcmp
+
+ft_strcmp:
+	xor rax, rax
+
+	test rdi, rdi ; test if args are false
+	je err
+	test rsi, rsi
+	je err
+loop_start:
+	mov al, [rdi]
+	cmp al, [rsi]
+	jne compare 
+
+	test al, al ; test if rdi is \0
+	je compare
+
+	mov al, [rsi] ; test if rsi is \0
+	test al, al
+	je compare 
+
+	lea rsi, [rsi + 1]
+	lea rdi, [rdi + 1]
+	jmp loop_start
+
+
+compare:
+	mov al, [rdi]
+	cmp al, [rsi]
+	jl lower
+	jg greater
+	mov eax, 0
+	jmp end
+
+lower:
+	mov eax, -1
+	jmp end
+
+greater:
+	mov eax, 1
+	jmp end
+
+err:
+	mov eax, 0
+
+end:
+	ret

srcs/ft_strcpy.s

@@ -0,0 +1,29 @@
+section .text
+	global ft_strcpy
+
+ft_strcpy:
+	test rdi, rdi
+	je err
+	test rsi, rsi
+	je err
+	push rdi
+	jmp loop_start
+condition_check:
+	mov al, [rdi]
+	test al, al
+	je end
+
+loop_start:
+	mov rax, [rsi]
+	mov [rdi], rax
+	lea rdi, [rdi + 1]
+	lea rsi, [rsi + 1]
+	jmp condition_check
+	
+end:
+	pop rax
+	ret
+
+err:
+	xor rax, rax
+	ret

srcs/ft_strdup.s

@@ -0,0 +1,31 @@
+extern malloc
+global ft_strdup
+extern ft_strcpy
+extern ft_strlen
+extern __errno_location
+section .text
+
+ft_strdup:
+	test rdi, rdi ; test if arg is NULL
+	je err
+
+	push rdi ;push to use it for the strcpy
+	call ft_strlen
+	mov rdi, rax
+
+	call malloc wrt ..plt
+	test rax, rax
+	je malloc_failed
+	mov rdi, rax
+	pop rsi
+	call ft_strcpy
+	ret
+
+malloc_failed:
+	call __errno_location wrt ..plt
+	mov dword [rax], 12
+	pop rax
+
+err:
+	xor rax, rax
+	ret

srcs/ft_write.s

@@ -0,0 +1,20 @@
+global ft_write
+extern __errno_location
+section .text
+
+ft_write:
+	mov rax, 1 ;syscall number for write, args are already set at the right place
+	syscall
+
+	cmp rax, 0 ; if return is < 0, it's an error in negative
+	jg success
+
+	neg rax ; inv errno, and set errno
+	mov edi, eax
+	call __errno_location wrt ..plt
+	mov [rax], edi
+	mov rax, -1
+
+
+success:
+	ret

test.c

@@ -1,27 +1,49 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   test.c                                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42angouleme.fr>   +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/03/29 19:53:58 by tomoron           #+#    #+#             */
+/*   Updated: 2025/03/29 19:54:24 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
 #include <stdlib.h>
+#include <string.h>
 #include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
 
 #define OK "\033[32mOK\n\033[0m"
 #define KO "\033[31mKO\n\033[0m"
 
 #define FNC_TEST(title, condition)\
 	printf(title":\n");\
-	if(test_strlen())\
+	if(condition)\
 		printf("RESULT: "OK);\
 	else\
 		printf(" RESULT: "KO);
 
 #define TEST(title, condition) \
-	printf("%s: ", title);\
+	write(1, title, strlen(title));\
+	write(1, ": ", 2);\
 	if(condition)\
 	{\
-		printf(OK);\
+		write(1, OK, strlen(OK));\
 		passed++;\
 	}\
 	else \
-		printf(KO);
+		write(1, KO, strlen(KO));\
 
-size_t ft_strlen(char *str);
+size_t	ft_strlen(char *str);
+char	*ft_strcpy(char *dest, char *src);
+int		ft_strcmp(char *dest, char *src);
+ssize_t	ft_write(int fd, const void *buffer, size_t count);
+ssize_t	ft_read(int fd, void *buffer, size_t count);
+char	*ft_strdup(char *src);
 
 int test_strlen(void)
 {
@@ -38,8 +60,136 @@ int test_strlen(void)
 	return(nb_tests == passed);
 }
 
+int test_strcpy(void)
+{
+	int nb_tests;
+	int passed;
+	char buf[256];
+
+	memset(buf,'a', 255);
+	buf[255] = 0;
+
+	nb_tests = 5;
+	passed = 0;
+
+	TEST("copy normal string", strcmp(ft_strcpy(buf, "hello"),"hello") == 0);
+	TEST("copy empty string", strcmp(ft_strcpy(buf, ""),"") == 0);
+	TEST("copy to null pointer", ft_strcpy(NULL, "") == 0);
+	TEST("copy from null pointer", ft_strcpy("", NULL) == 0);
+	TEST("copy from and to null pointer", ft_strcpy(NULL, NULL) == 0);
+
+	return(nb_tests == passed);
+}
+
+int test_strcmp(void)
+{
+	int nb_tests;
+	int passed;
+
+	nb_tests = 5;
+	passed = 0;
+
+	TEST("equal string", ft_strcmp("coucou", "coucou") == 0);
+	TEST("second smaller string", ft_strcmp("coucou", "c") == 1);
+	TEST("first smaller string", ft_strcmp("c", "coucou") == -1);
+	TEST("first null", ft_strcmp(NULL, "coucou") == 0);
+	TEST("second null", ft_strcmp("hello", NULL) == 0);
+
+	return(nb_tests == passed);
+}
+
+int test_write(void)
+{
+	int nb_tests;
+	int passed;
+
+	nb_tests = 5;
+	passed = 0;
+	
+	TEST("writing hello and test return value", ft_write(1, "hello ", 6) == 6);
+	errno = 0;
+	TEST("failed write return value", ft_write(-1, "", 0) == (size_t)-1);
+	TEST("failed write errno test", errno == 9);
+	errno = 0;
+	TEST("call write with null pointer, return value", ft_write(1, NULL, 1) == (size_t)-1);
+	TEST("call write with null pointer, errno", errno == 14);
+
+	return(nb_tests == passed);
+}
+
+int test_read(void)
+{
+	int nb_tests;
+	int passed;
+	int fd;
+	char buf[512];
+
+	nb_tests = 8;
+	passed = 0;
+
+	printf("creating test file to test the read function\n");
+	fd = open("test_file.tmp", O_WRONLY | O_CREAT, 0600);
+	write(fd, "patate douce", 12);
+	close(fd);
+
+	fd = open("test_file.tmp", O_RDONLY);
+	TEST("read 1 char",  ft_read(fd, buf, 1) == 1);
+	TEST("check read char", memcmp(buf, "p", 1) == 0);
+	TEST("read multiple char", ft_read(fd, buf, 5) == 5);
+	TEST("compare with expected", memcmp(buf, "atate", 5) == 0);
+
+	errno = 0;
+	TEST("invalid fd read, return", ft_read(-1, buf, 20) == (size_t)-1);
+	TEST("invalid fd read, errno", errno == 9);
+	errno = 0;
+	TEST("read to null pointer, return", ft_read(fd, NULL, 4) == (size_t)-1)
+	TEST("read to null pointer, errno", errno == 14)
+	close(fd);
+
+	return(nb_tests == passed);
+}
+
+int test_strdup(void)
+{
+	int nb_tests;
+	int passed;
+	char *src = "patate douce";
+	char *dest;
+
+	nb_tests = 4;
+	passed = 0;
+
+	dest = ft_strdup(src);
+	
+	if(!dest)
+	{
+		printf("strdup failed, probably testing errno, returing with result\n");
+		return(errno == ENOMEM);
+	}
+
+	TEST("strdup normal stiring, diff pointer", dest != src);
+	TEST("strdup normal string , content", !strcmp(dest, src));
+	free(dest);
+
+	dest = ft_strdup("");
+	TEST("strdup empty string", *dest == 0);
+	free(dest);
+	TEST("strdup null pointer", ft_strdup(NULL) == NULL);
+
+	return(nb_tests == passed);
+}
+
 int main(void)
 {
 	FNC_TEST("ft_strlen", test_strlen());
 	printf("\n\n");
+	FNC_TEST("ft_strcpy", test_strcpy());
+	printf("\n\n");
+	FNC_TEST("ft_strcmp", test_strcmp());
+	printf("\n\n");
+	FNC_TEST("ft_write", test_write());
+	printf("\n\n");
+	FNC_TEST("ft_read", test_read());
+	printf("\n\n");
+	FNC_TEST("ft_strdup", test_strdup());
 }

test_file.tmp

@@ -0,0 +1 @@
+patate douce