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| author | Charles <sircharlesaze@gmail.com> | 2019-11-23 00:28:03 +0100 |
|---|---|---|
| committer | Charles <sircharlesaze@gmail.com> | 2019-11-23 00:28:03 +0100 |
| commit | c90117251f11e03452ae9808ff8626016c7958a1 (patch) | |
| tree | b4ef9f0f562d3394e23af4a698ad35964f18bc23 /ft_atoi_base.s | |
| parent | 8e3a5ac569a3ccc1101b58fe8ef673f02b4961fb (diff) | |
| download | libasm-c90117251f11e03452ae9808ff8626016c7958a1.tar.gz libasm-c90117251f11e03452ae9808ff8626016c7958a1.tar.bz2 libasm-c90117251f11e03452ae9808ff8626016c7958a1.zip | |
Compiling with nasm
Diffstat (limited to 'ft_atoi_base.s')
| -rw-r--r-- | ft_atoi_base.s | 83 |
1 files changed, 42 insertions, 41 deletions
diff --git a/ft_atoi_base.s b/ft_atoi_base.s index 6245765..e51487c 100644 --- a/ft_atoi_base.s +++ b/ft_atoi_base.s @@ -1,25 +1,26 @@ -# **************************************************************************** # -# # -# ::: :::::::: # -# ft_atoi_base.s :+: :+: :+: # -# +:+ +:+ +:+ # -# By: cacharle <marvin@42.fr> +#+ +:+ +#+ # -# +#+#+#+#+#+ +#+ # -# Created: 2019/11/22 03:59:15 by cacharle #+# #+# # -# Updated: 2019/11/22 21:18:08 by cacharle ### ########.fr # -# # -# **************************************************************************** # +; **************************************************************************** ; +; ; +; ::: :::::::: ; +; ft_atoi_base.s :+: :+: :+: ; +; +:+ +:+ +:+ ; +; By: cacharle <marvin@42.fr> +;+ +:+ +;+ ; +; +;+;+;+;+;+ +;+ ; +; Created: 2019/11/22 03:59:15 by cacharle ;+; ;+; ; +; Updated: 2019/11/22 21:18:08 by cacharle ;;; ;;;;;;;;.fr ; +; ; +; **************************************************************************** ; -.globl _ft_atoi_base -.globl _check_base +extern _ft_strlen -# int ft_atoi_base(const char*, const char*); +global _ft_atoi_base + +; int ft_atoi_base(const char*, const char*); _ft_atoi_base: - push rbp # save previous stackframe - mov rbp, rsp # create new one + push rbp ; save previous stackframe + mov rbp, rsp ; create new one - mov rbx, rdi # rbx = str - mov rcx, rsi # rcx = base + mov rbx, rdi ; rbx = str + mov rcx, rsi ; rcx = base mov rdi, rcx call _check_base @@ -28,11 +29,11 @@ _ft_atoi_base: mov rdi, rcx call _ft_strlen - #mov r8, rax # r8 = radix - #mov rax, r8 + ;mov r8, rax ; r8 = radix + ;mov rax, r8 - xor rdx, rdx # rdx = 0 - FT_ATOI_BASE_SPACE_LOOP: # remove spaces + xor rdx, rdx ; rdx = 0 + FT_ATOI_BASE_SPACE_LOOP: ; remove spaces mov rdi, [rbx] call ft_isspace cmp rax, 1 @@ -41,18 +42,18 @@ _ft_atoi_base: jmp FT_ATOI_BASE_SPACE_LOOP FT_ATOI_BASE_SPACE_LOOP_END: - xor rax, rax # rax = 0 - xor rdx, rdx # rdx = 0 + xor rax, rax ; rax = 0 + xor rdx, rdx ; rdx = 0 FT_ATOI_BASE_LOOP: - cmp byte ptr [rbx], 30h # while isdigit - jl FT_ATOI_BASE_END # if *rbx < '0' jmp end - cmp byte ptr [rbx], 39h - ja FT_ATOI_BASE_END # if *rbx > '9' jmp end + cmp byte [rbx], 30h ; while isdigit + jl FT_ATOI_BASE_END ; if *rbx < '0' jmp end + cmp byte [rbx], 39h + ja FT_ATOI_BASE_END ; if *rbx > '9' jmp end - imul eax, 10 # eax *= 10, shift previous digits - mov dl, byte ptr [rbx] - and dl, 0x0F # char to digit - add eax, edx # insert as first digit + imul eax, 10 ; eax *= 10, shift previous digits + mov dl, byte [rbx] + and dl, 0x0F ; char to digit + add eax, edx ; insert as first digit inc rbx jmp FT_ATOI_BASE_LOOP FT_ATOI_BASE_END: @@ -63,9 +64,9 @@ _base_pos: mov rcx, rsi xor rax, rax BASE_POS_LOOP: - cmp byte ptr [rdi + rax], 0 + cmp byte [rdi + rax], 0 je BASE_POS_NOT_FOUND - cmp cl, byte ptr [rdi + rax] + cmp cl, byte [rdi + rax] je BASE_POS_FOUND inc eax jmp BASE_POS_LOOP @@ -78,23 +79,23 @@ _check_base: push rbx mov rbx, rsp - mov rbx, rdi # rbx = str + mov rbx, rdi ; rbx = str - call _ft_strlen # f strlen(rbx) < 2 + call _ft_strlen ; f strlen(rbx) < 2 cmp eax, 2 jl CHECK_BASE_ERROR CHECK_BASE_LOOP: - cmp byte ptr [rbx], 2bh # *rbx == '-' || *rbx == '+' + cmp byte [rbx], 2bh ; *rbx == '-' || *rbx == '+' je CHECK_BASE_ERROR - cmp byte ptr [rbx], 2dh + cmp byte [rbx], 2dh je CHECK_BASE_ERROR call ft_isspace cmp rax, 1 je CHECK_BASE_ERROR inc rbx - cmp byte ptr [rbx], 0h + cmp byte [rbx], 0h jne CHECK_BASE_LOOP mov rax, 1 pop rbx @@ -105,9 +106,9 @@ _check_base: ret ft_isspace: - cmp byte ptr [rdi], 20h # if space jump next + cmp byte [rdi], 20h ; if space jump next je ISSPACE_TRUE_END - mov dl, byte ptr [rdi] # if \t\n\r\v\f jump next + mov dl, byte [rdi] ; if \t\n\r\v\f jump next sub dl, 9h cmp dl, 5h jl ISSPACE_TRUE_END |