1 /*
2 Copyright (c) 2011 Intel Corporation
3 All rights reserved.
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met:
8 * Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
11 * Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
15 * Neither the name of Intel Corporation nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
20 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
23 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
26 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
31 #ifndef L
32 # define L(label) .L##label
33 #endif
35 #ifndef cfi_startproc
36 # define cfi_startproc .cfi_startproc
37 #endif
39 #ifndef cfi_endproc
40 # define cfi_endproc .cfi_endproc
41 #endif
43 #ifndef cfi_rel_offset
44 # define cfi_rel_offset(reg, off) .cfi_rel_offset reg, off
45 #endif
47 #ifndef cfi_restore
48 # define cfi_restore(reg) .cfi_restore reg
49 #endif
51 #ifndef cfi_adjust_cfa_offset
52 # define cfi_adjust_cfa_offset(off) .cfi_adjust_cfa_offset off
53 #endif
55 #ifndef ENTRY
56 # define ENTRY(name) \
57 .type name, @function; \
58 .globl name; \
59 .p2align 4; \
60 name: \
61 cfi_startproc
62 #endif
64 #ifndef END
65 # define END(name) \
66 cfi_endproc; \
67 .size name, .-name
68 #endif
70 #define CFI_PUSH(REG) \
71 cfi_adjust_cfa_offset (4); \
72 cfi_rel_offset (REG, 0)
74 #define CFI_POP(REG) \
75 cfi_adjust_cfa_offset (-4); \
76 cfi_restore (REG)
78 #define PUSH(REG) pushl REG; CFI_PUSH (REG)
79 #define POP(REG) popl REG; CFI_POP (REG)
81 #define PARMS 4
82 #define STR1 PARMS+4
83 #define STR2 STR1+4
85 #define USE_AS_WCSCAT
87 .text
88 ENTRY (wcscat)
89 PUSH (%edi)
90 mov STR1(%esp), %edi
91 mov %edi, %edx
93 #define RETURN jmp L(WcscpyAtom)
94 #include "sse2-wcslen-atom.S"
96 L(WcscpyAtom):
97 shl $2, %eax
98 mov STR2(%esp), %ecx
99 lea (%edi, %eax), %edx
101 cmp $0, (%ecx)
102 jz L(Exit4)
103 cmp $0, 4(%ecx)
104 jz L(Exit8)
105 cmp $0, 8(%ecx)
106 jz L(Exit12)
107 cmp $0, 12(%ecx)
108 jz L(Exit16)
110 #undef RETURN
111 #define RETURN POP(%edi); ret; CFI_PUSH(%edi)
112 #include "ssse3-wcscpy-atom.S"
114 END (wcscat)