75 lines
2.9 KiB
ArmAsm
75 lines
2.9 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
|
|
│vi: set et ft=asm ts=8 sw=8 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ This program is free software; you can redistribute it and/or modify │
|
|
│ it under the terms of the GNU General Public License as published by │
|
|
│ the Free Software Foundation; version 2 of the License. │
|
|
│ │
|
|
│ This program is distributed in the hope that it will be useful, but │
|
|
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
|
|
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
|
|
│ General Public License for more details. │
|
|
│ │
|
|
│ You should have received a copy of the GNU General Public License │
|
|
│ along with this program; if not, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/macros.h"
|
|
|
|
/ Compares NUL-terminated wchar_t strings, ignoring ASCII case.
|
|
/
|
|
/ @param rdi first string
|
|
/ @param rsi second string
|
|
/ @return 0 if equal, etc.
|
|
/ @note wchar_t is a 32-bit signed type
|
|
wcscasecmp:
|
|
or $-1,%rdx
|
|
/ fallthrough
|
|
.endfn wcscasecmp,globl
|
|
|
|
/ Compares NUL-terminated wchar_t strings w/ limit ignoring ASCII case.
|
|
/
|
|
/ @param rdi first string
|
|
/ @param rsi second string
|
|
/ @param rdx max shorts
|
|
/ @return 0 if equal, etc.
|
|
/ @note wchar_t is a 32-bit signed type
|
|
wcsncasecmp:
|
|
.leafprologue
|
|
.profilable
|
|
push %rbx
|
|
cmp %rdi,%rsi
|
|
je 3f
|
|
lea kToLower16(%rip),%r8
|
|
or $-1,%rcx
|
|
1: add $1,%rcx
|
|
cmp %rcx,%rdx
|
|
je 3f
|
|
mov (%rsi,%rcx,4),%eax
|
|
mov %eax,%ebx
|
|
and $0x7f,%ebx
|
|
cmp %eax,%ebx
|
|
cmove (%r8,%rbx,2),%ax
|
|
push %rax
|
|
mov (%rdi,%rcx,4),%eax
|
|
mov %eax,%ebx
|
|
and $0x7f,%ebx
|
|
cmp %eax,%ebx
|
|
cmove (%r8,%rbx,2),%ax
|
|
pop %rbx
|
|
cmp %ebx,%eax
|
|
jne 2f
|
|
test %eax,%eax
|
|
jnz 1b
|
|
2: sub %ebx,%eax
|
|
jmp 4f
|
|
3: xor %eax,%eax
|
|
4: pop %rbx
|
|
.leafepilogue
|
|
.endfn wcsncasecmp,globl
|
|
|
|
.source __FILE__
|