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Namonay
2024-05-23 14:59:13 +02:00
parent b7a3b7140b
commit 44bb95ec7d
5 changed files with 37 additions and 35 deletions
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9
Makefile
View File

@@ -6,7 +6,7 @@
# By: vvaas <vvaas@student.42angouleme.fr> +#+ +:+ +#+ # # By: vvaas <vvaas@student.42angouleme.fr> +#+ +:+ +#+ #
# +#+#+#+#+#+ +#+ # # +#+#+#+#+#+ +#+ #
# Created: 2024/03/15 14:16:21 by vvaas #+# #+# # # Created: 2024/03/15 14:16:21 by vvaas #+# #+# #
# Updated: 2024/03/27 17:45:37 by vvaas ### ########.fr # # Updated: 2024/05/23 14:42:18 by vvaas ### ########.fr #
# # # #
#******************************************************************************# #******************************************************************************#
@@ -30,12 +30,15 @@ AR = ar
ARFLAG = rc ARFLAG = rc
.s.o : .s.o :
${CC} $< -o ${<:.s=.o} ${FLAGS} @printf "\e[1;32m[compiling {"$(CC)"}...]\e[1;00m "$<"\n"
@${CC} $< -o ${<:.s=.o} ${FLAGS}
all: ${NAME} all: ${NAME}
${NAME}: ${OBJS} ${NAME}: ${OBJS}
${AR} ${ARFLAGS} ${NAME} ${OBJS} @printf "\e[1;32m[linking {"$(CC)"}...]\e[1;00m "$@"\n"
@${AR} ${ARFLAGS} ${NAME} ${OBJS}
@printf "\e[1;32m[build finished]\e[1;00m\n"
clean: clean:
rm -f ${OBJS} rm -f ${OBJS}

34
ft_strcmp.s
View File

@@ -1,27 +1,27 @@
global ft_strcmp global ft_strcmp
ft_strcmp: ft_strcmp:
xor r8, r8 xor r8, r8 ; r8 = 0
xor rax, rax xor rax, rax ; rax = 0
.count: .count:
mov al, BYTE [rdi + r8] mov al, BYTE [rdi + r8] ; al = s1[r8]
mov dl, BYTE [rsi + r8] mov dl, BYTE [rsi + r8]; dl = s2[r8]
test al, al test al, al ; if (al == 0)
jz .end jz .end ; goto end
test dl, dl test dl, dl ; if (dl == 0)
jz .end jz .end ; goto end
cmp al, dl cmp al, dl ; compare al and dl
jne .end jne .end ; if not equal, goto end
inc r8 inc r8 ; r8++
jmp .count jmp .count ; repeat
.end: .end:
sub al, dl sub al, dl ; take diff between al and dl
js .neg js .neg
ret ret ; return it
.neg: .neg:
neg al neg al ; al = -al;
neg rax neg rax ; al is the first 8 bit of rax, so reverse it
ret ret ; return it

8
ft_strdup.s
View File

@@ -14,9 +14,9 @@ ft_strdup:
je .end je .end
pop rsi ; we take the value we saved earlier pop rsi ; we take the value we saved earlier
mov rdi, rax ; move the result of malloc into rdi (override strlen result) mov rdi, rax ; move the result of malloc into rdi (override strlen result)
call ft_strcpy call ft_strcpy ; copy the string
ret ret ; result is put into rax, return it
.end: .end:
pop rsi pop rsi ; remove rsi from the stack
ret ret ; return

13
ft_strlen.s
View File

@@ -1,13 +1,12 @@
global ft_strlen global ft_strlen
ft_strlen: ft_strlen:
xor rax, rax xor rax, rax ; rax = 0;
.cmp_char: .cmp_char:
cmp byte [rdi + rax], 0 cmp byte [rdi + rax], 0 ; if (str[rax] == 0)
je .end je .end ; goto end
inc rax inc rax ; rax++;
jmp .cmp_char jmp .cmp_char ; repeat
.end: .end:
ret ret ; return it

8
ft_write.s
View File

@@ -2,16 +2,16 @@ global ft_write
extern __errno_location extern __errno_location
ft_write: ft_write:
cmp rsi, 0 cmp rsi, 0 ; if buffer is null
je .bad_buff je .bad_buff ; goto bad_buff
mov eax, 0x1 ; put the syscall number of write mov eax, 0x1 ; put the syscall number of write
syscall syscall ; call write
test rax, rax ; test if the syscall failed test rax, rax ; test if the syscall failed
js .error js .error
ret ret
.bad_buff: .bad_buff:
mov rdx, 22 mov rdx, 22 ; put the corresponding errno code
call __errno_location wrt ..plt call __errno_location wrt ..plt
mov [rax], rdx mov [rax], rdx
mov rax, -1 mov rax, -1