53 lines
899 B
Plaintext
53 lines
899 B
Plaintext
; The OS/K Team licenses this file to you under the MIT license.
|
|
; See the LICENSE file in the project root for more information.
|
|
|
|
;
|
|
; int strcmp(const char *str1, const char *str2)
|
|
;
|
|
; Returns:
|
|
; 0 if the contents of both strings are equal
|
|
; 1 if the first character that does not match has a greater value in str1 than in str2
|
|
; -1 if the first character that does not match has a lower value in str1 than in str2
|
|
;
|
|
|
|
strcmp:
|
|
cmp b[ax0], b[ax1]
|
|
jmp.nz .1
|
|
|
|
test b[ax0], b[ax0]
|
|
jmp.z .1
|
|
|
|
inc ax0
|
|
inc ax1
|
|
jmp strcmp
|
|
|
|
.1:
|
|
mov rax, b[ax0]
|
|
sub rax, b[ax1]
|
|
sgn rax, rax
|
|
ret
|
|
|
|
;
|
|
; int strncmp(const char *str1, const char *str2, int maxn)
|
|
;
|
|
strncmp:
|
|
mov rcx, ax2
|
|
|
|
.0:
|
|
cmp b[ax0], b[ax1]
|
|
jmp.nz .1
|
|
|
|
test b[ax0], b[ax0]
|
|
jmp.z .1
|
|
|
|
inc ax0
|
|
inc ax1
|
|
loop .0
|
|
|
|
.1:
|
|
mov rax, b[ax0]
|
|
sub rax, b[ax1]
|
|
sgn rax, rax
|
|
ret
|
|
|