From ff8d51b1c40edff424f00c0c49a89d0089387480 Mon Sep 17 00:00:00 2001
From: gbrochar <gaetanbrochard@protonmail.com>
Date: Sat, 24 Feb 2024 08:40:53 +0100
Subject: [PATCH] feat: ft_strcpy

---
 Makefile    |  6 ++++--
 ft_strcpy.s | 14 ++++++++++++++
 libasm.h    |  3 ++-
 main.c      | 11 +++++++++++
 4 files changed, 31 insertions(+), 3 deletions(-)
 create mode 100644 ft_strcpy.s

diff --git a/Makefile b/Makefile
index 10bd765..d00e6cf 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,8 @@
 NAME = libasm
 
-SRC = ft_strlen.s
+SRC = \
+	ft_strlen.s \
+	ft_strcpy.s \
 
 OBJ = $(SRC:.s=.o)
 
@@ -13,7 +15,7 @@ $(NAME): $(OBJ)
 	ar rcs libasm.a $(OBJ)
 
 test: $(NAME)
-	gcc -Wall -Werror -Wextra main.c -L. -lasm -o libasm_unit_tests
+	gcc -Wall -Werror -Wextra -g main.c -L. -lasm -o libasm_unit_tests
 
 clean:
 	rm $(OBJ)
diff --git a/ft_strcpy.s b/ft_strcpy.s
new file mode 100644
index 0000000..925d2d3
--- /dev/null
+++ b/ft_strcpy.s
@@ -0,0 +1,14 @@
+global ft_strcpy
+
+ft_strcpy:
+	xor rax, rax
+.loop:
+	cmp byte [rsi + rax], 0
+	je .done
+	mov rdx, [rsi + rax]
+	mov [rdi + rax], rdx
+	inc rax
+	jmp .loop
+.done:
+	mov rax, rdi 
+	ret
diff --git a/libasm.h b/libasm.h
index 3499474..dc1a5d6 100644
--- a/libasm.h
+++ b/libasm.h
@@ -3,6 +3,7 @@
 
 #include <stdio.h>
 
-ssize_t ft_strlen(const char *);
+size_t ft_strlen(const char *);
+char *ft_strcpy(char *, const char *);
 
 #endif
diff --git a/main.c b/main.c
index fedfe6c..7b577ba 100644
--- a/main.c
+++ b/main.c
@@ -1,6 +1,17 @@
 #include "libasm.h"
+#include <stdlib.h>
 
 int main() {
 	printf("%ld\n", ft_strlen("c'est moi la chaine de 36 caracteres"));
+
+	char *str;
+	str = (char *)malloc(150 * sizeof(char));
+	str = "Salut c'est moi la zone mdr\0";
+	char *dst;
+	dst = (char *)malloc(50 * sizeof(char));
+	char *test = ft_strcpy(dst, str);
+	printf("%s\n", str);
+	printf("%s\n", dst);
+	printf("%s\n", test);
 	return 0;
 }