From 12b8ab0bbc4873bad42d3a346824ecd895cb9b6e Mon Sep 17 00:00:00 2001
From: lohhiiccc <loic@lohic.dev>
Date: Fri, 12 Jun 2026 17:31:10 +0200
Subject: [PATCH] feat: ft_bzero

---
 Makefile         |  3 ++-
 src/ft_bzero.asm | 16 ++++++++++++++++
 src/libasm.h     |  2 +-
 3 files changed, 19 insertions(+), 2 deletions(-)
 create mode 100644 src/ft_bzero.asm

diff --git a/Makefile b/Makefile
index 6907a9d..2f72edd 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,8 @@ SRCS=$(SRC_DIR)/ft_strlen.asm \
 		 $(SRC_DIR)/ft_write.asm \
 		 $(SRC_DIR)/ft_read.asm \
 		 $(SRC_DIR)/ft_strdup.asm \
-		 $(SRC_DIR)/ft_memcpy.asm
+		 $(SRC_DIR)/ft_memcpy.asm \
+		 $(SRC_DIR)/ft_bzero.asm
 
 OBJS=$(patsubst $(SRC_DIR)/%.asm,$(OBJ_DIR)/%.o,$(SRCS))
 DEPS=$(OBJS:.o=.d)
diff --git a/src/ft_bzero.asm b/src/ft_bzero.asm
new file mode 100644
index 0000000..ac5d3f3
--- /dev/null
+++ b/src/ft_bzero.asm
@@ -0,0 +1,16 @@
+global ft_bzero
+section .text
+
+; rdi: dest
+; rsi: len
+ft_bzero:
+	test	rsi, rsi
+	je	.done
+
+	xor	eax, eax
+	mov	rcx, rsi
+	cld
+	rep	stosb
+
+.done:
+	ret
diff --git a/src/libasm.h b/src/libasm.h
index 2df3ccd..4922b74 100644
--- a/src/libasm.h
+++ b/src/libasm.h
@@ -13,7 +13,7 @@ ssize_t	ft_write(int fildes, const void *buf, size_t nbyte);
 char		*strdup(const char *s);
 ssize_t	ft_read(int fd, void *buf, size_t count);
 void		*ft_memcpy(void *dest, const void *src, size_t n);
-
+void		ft_bzero(void *s, size_t n);
 #ifdef __cplusplus
 }
 #endif