From 174a587414513a2f5e2030bf56d54d0b3a58f98f Mon Sep 17 00:00:00 2001
From: starnakin <camille@chauvet.pro>
Date: Tue, 3 Sep 2024 14:34:52 +0200
Subject: [PATCH] add: ft_read

---
 include/libasm.h |  3 ++-
 src/ft_read.asm  | 25 +++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 src/ft_read.asm

diff --git a/include/libasm.h b/include/libasm.h
index da5d07e..1bef4a0 100644
--- a/include/libasm.h
+++ b/include/libasm.h
@@ -7,4 +7,5 @@ char *ft_strcpy(char *dest, const char *src);
 size_t ft_strlen(const char *str);
 int ft_strcmp( const char *first, const char *second);
 ssize_t ft_write(int fd, const void *buf, size_t count);
-char *ft_strdup(const char *s);
\ No newline at end of file
+char *ft_strdup(const char *s);
+ssize_t ft_read(int fildes, void *buf, size_t nbyte);
\ No newline at end of file
diff --git a/src/ft_read.asm b/src/ft_read.asm
new file mode 100644
index 0000000..f99bc5d
--- /dev/null
+++ b/src/ft_read.asm
@@ -0,0 +1,25 @@
+extern __errno_location 
+
+section .text
+    global ft_read
+    ft_read:
+
+        xor rax, rax
+    
+        syscall
+    
+        cmp rax, 0
+        jne syscall_failed
+    
+        ret
+    
+    syscall_failed:
+        
+        neg rax
+        mov rbx, rax
+        
+        call __errno_location wrt ..plt
+
+        mov [rax], rbx
+        mov rax, -1
+        ret
\ No newline at end of file