feat: ft_write
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parent
274cf8281e
commit
6285fdd11b
3 changed files with 26 additions and 3 deletions
5
Makefile
5
Makefile
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@ -1,5 +1,5 @@
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NASM=nasm
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NASMFLAGS=-f elf64 -g -F dwarf
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NASMFLAGS=-f elf64 -g -F dwarf -D PIC
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AR=ar
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ARFLAGS=rcs
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CC=gcc
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@ -12,7 +12,8 @@ SHARED_LIB=lib$(LIB_NAME).so
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SRCS=$(SRC_DIR)/ft_strlen.asm \
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$(SRC_DIR)/ft_strcpy.asm \
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$(SRC_DIR)/ft_strcmp.asm
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$(SRC_DIR)/ft_strcmp.asm \
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$(SRC_DIR)/ft_write.asm
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OBJS=$(patsubst $(SRC_DIR)/%.asm,$(OBJ_DIR)/%.o,$(SRCS))
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DEPS=$(OBJS:.o=.d)
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21
src/ft_write.asm
Normal file
21
src/ft_write.asm
Normal file
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@ -0,0 +1,21 @@
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global ft_write
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extern __errno_location
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section .text
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ft_write:
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mov eax, 1
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syscall
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; if rax >= 0
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test rax, rax
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jns .done
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neg rax
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mov edi, eax
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call __errno_location wrt ..plt
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mov dword [rax], edi
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mov eax, -1
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.done:
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ret
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@ -1,7 +1,7 @@
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#ifndef MYLIB_H
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#define MYLIB_H
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#include <string.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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@ -9,6 +9,7 @@ extern "C" {
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size_t ft_strlen(char *str);
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char *ft_strcpy(char *dest, const char *src);
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int ft_strcmp (const char *p1, const char *p2);
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ssize_t ft_write(int fildes, const void *buf, size_t nbyte);
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#ifdef __cplusplus
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}
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