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platform_bionic/libc/arch-x86/string/ssse3-wcscpy-atom.S
Elliott Hughes ed777145e7 Tidy up the x86 atom/silvermont stuff similar to x86-64. 
Get rid of the bad precedent of having the architecture variant in the
file name *and* directory name.

Test: treehugger
Change-Id: I78582c12b4390578c51d52d4dd86f57470129abf
2022-07-25 16:27:25 +00:00

652 lines
12 KiB
ArmAsm
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/*
Copyright (c) 2011, Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef USE_AS_WCSCAT
# ifndef L
# define L(label) .L##label
# endif
# ifndef cfi_startproc
# define cfi_startproc .cfi_startproc
# endif
# ifndef cfi_endproc
# define cfi_endproc .cfi_endproc
# endif
# ifndef cfi_rel_offset
# define cfi_rel_offset(reg, off) .cfi_rel_offset reg, off
# endif
# ifndef cfi_restore
# define cfi_restore(reg) .cfi_restore reg
# endif
# ifndef cfi_adjust_cfa_offset
# define cfi_adjust_cfa_offset(off) .cfi_adjust_cfa_offset off
# endif
# ifndef ENTRY
# define ENTRY(name) \
.type name, @function; \
.globl name; \
.p2align 4; \
name: \
cfi_startproc
# endif
# ifndef END
# define END(name) \
cfi_endproc; \
.size name, .-name
# endif
# define CFI_PUSH(REG) \
cfi_adjust_cfa_offset (4); \
cfi_rel_offset (REG, 0)
# define CFI_POP(REG) \
cfi_adjust_cfa_offset (-4); \
cfi_restore (REG)
# define PUSH(REG) pushl REG; CFI_PUSH (REG)
# define POP(REG) popl REG; CFI_POP (REG)
# define PARMS 4
# define RETURN POP (%edi); ret; CFI_PUSH (%edi)
# define STR1 PARMS
# define STR2 STR1+4
# define LEN STR2+4
.text
ENTRY (wcscpy_ssse3)
mov STR1(%esp), %edx
mov STR2(%esp), %ecx
cmpl $0, (%ecx)
jz L(ExitTail4)
cmpl $0, 4(%ecx)
jz L(ExitTail8)
cmpl $0, 8(%ecx)
jz L(ExitTail12)
cmpl $0, 12(%ecx)
jz L(ExitTail16)
PUSH (%edi)
mov %edx, %edi
#endif
PUSH (%esi)
lea 16(%ecx), %esi
and $-16, %esi
pxor %xmm0, %xmm0
pcmpeqd (%esi), %xmm0
movdqu (%ecx), %xmm1
movdqu %xmm1, (%edx)
pmovmskb %xmm0, %eax
sub %ecx, %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
mov %edx, %eax
lea 16(%edx), %edx
and $-16, %edx
sub %edx, %eax
sub %eax, %ecx
mov %ecx, %eax
and $0xf, %eax
mov $0, %esi
jz L(Align16Both)
cmp $4, %eax
je L(Shl4)
cmp $8, %eax
je L(Shl8)
jmp L(Shl12)
L(Align16Both):
movaps (%ecx), %xmm1
movaps 16(%ecx), %xmm2
movaps %xmm1, (%edx)
pcmpeqd %xmm2, %xmm0
pmovmskb %xmm0, %eax
lea 16(%esi), %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
movaps 16(%ecx, %esi), %xmm3
movaps %xmm2, (%edx, %esi)
pcmpeqd %xmm3, %xmm0
pmovmskb %xmm0, %eax
lea 16(%esi), %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
movaps 16(%ecx, %esi), %xmm4
movaps %xmm3, (%edx, %esi)
pcmpeqd %xmm4, %xmm0
pmovmskb %xmm0, %eax
lea 16(%esi), %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
movaps 16(%ecx, %esi), %xmm1
movaps %xmm4, (%edx, %esi)
pcmpeqd %xmm1, %xmm0
pmovmskb %xmm0, %eax
lea 16(%esi), %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
movaps 16(%ecx, %esi), %xmm2
movaps %xmm1, (%edx, %esi)
pcmpeqd %xmm2, %xmm0
pmovmskb %xmm0, %eax
lea 16(%esi), %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
movaps 16(%ecx, %esi), %xmm3
movaps %xmm2, (%edx, %esi)
pcmpeqd %xmm3, %xmm0
pmovmskb %xmm0, %eax
lea 16(%esi), %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
movaps %xmm3, (%edx, %esi)
mov %ecx, %eax
lea 16(%ecx, %esi), %ecx
and $-0x40, %ecx
sub %ecx, %eax
sub %eax, %edx
mov $-0x40, %esi
L(Aligned64Loop):
movaps (%ecx), %xmm2
movaps 32(%ecx), %xmm3
movaps %xmm2, %xmm4
movaps 16(%ecx), %xmm5
movaps %xmm3, %xmm6
movaps 48(%ecx), %xmm7
pminub %xmm5, %xmm2
pminub %xmm7, %xmm3
pminub %xmm2, %xmm3
lea 64(%edx), %edx
pcmpeqd %xmm0, %xmm3
lea 64(%ecx), %ecx
pmovmskb %xmm3, %eax
test %eax, %eax
jnz L(Aligned64Leave)
movaps %xmm4, -64(%edx)
movaps %xmm5, -48(%edx)
movaps %xmm6, -32(%edx)
movaps %xmm7, -16(%edx)
jmp L(Aligned64Loop)
L(Aligned64Leave):
pcmpeqd %xmm4, %xmm0
pmovmskb %xmm0, %eax
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
pcmpeqd %xmm5, %xmm0
pmovmskb %xmm0, %eax
movaps %xmm4, -64(%edx)
lea 16(%esi), %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
pcmpeqd %xmm6, %xmm0
pmovmskb %xmm0, %eax
movaps %xmm5, -48(%edx)
lea 16(%esi), %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
movaps %xmm6, -32(%edx)
pcmpeqd %xmm7, %xmm0
pmovmskb %xmm0, %eax
lea 16(%esi), %esi
test %eax, %eax
jnz L(CopyFrom1To16Bytes)
mov $-0x40, %esi
movaps %xmm7, -16(%edx)
jmp L(Aligned64Loop)
.p2align 4
L(Shl4):
movaps -4(%ecx), %xmm1
movaps 12(%ecx), %xmm2
L(Shl4Start):
pcmpeqd %xmm2, %xmm0
pmovmskb %xmm0, %eax
movaps %xmm2, %xmm3
test %eax, %eax
jnz L(Shl4LoopExit)
palignr $4, %xmm1, %xmm2
movaps %xmm2, (%edx)
movaps 28(%ecx), %xmm2
pcmpeqd %xmm2, %xmm0
lea 16(%edx), %edx
pmovmskb %xmm0, %eax
lea 16(%ecx), %ecx
movaps %xmm2, %xmm1
test %eax, %eax
jnz L(Shl4LoopExit)
palignr $4, %xmm3, %xmm2
movaps %xmm2, (%edx)
movaps 28(%ecx), %xmm2
pcmpeqd %xmm2, %xmm0
lea 16(%edx), %edx
pmovmskb %xmm0, %eax
lea 16(%ecx), %ecx
movaps %xmm2, %xmm3
test %eax, %eax
jnz L(Shl4LoopExit)
palignr $4, %xmm1, %xmm2
movaps %xmm2, (%edx)
movaps 28(%ecx), %xmm2
pcmpeqd %xmm2, %xmm0
lea 16(%edx), %edx
pmovmskb %xmm0, %eax
lea 16(%ecx), %ecx
test %eax, %eax
jnz L(Shl4LoopExit)
palignr $4, %xmm3, %xmm2
movaps %xmm2, (%edx)
lea 28(%ecx), %ecx
lea 16(%edx), %edx
mov %ecx, %eax
and $-0x40, %ecx
sub %ecx, %eax
lea -12(%ecx), %ecx
sub %eax, %edx
movaps -4(%ecx), %xmm1
L(Shl4LoopStart):
movaps 12(%ecx), %xmm2
movaps 28(%ecx), %xmm3
movaps %xmm3, %xmm6
movaps 44(%ecx), %xmm4
movaps %xmm4, %xmm7
movaps 60(%ecx), %xmm5
pminub %xmm2, %xmm6
pminub %xmm5, %xmm7
pminub %xmm6, %xmm7
pcmpeqd %xmm0, %xmm7
pmovmskb %xmm7, %eax
movaps %xmm5, %xmm7
palignr $4, %xmm4, %xmm5
palignr $4, %xmm3, %xmm4
test %eax, %eax
jnz L(Shl4Start)
palignr $4, %xmm2, %xmm3
lea 64(%ecx), %ecx
palignr $4, %xmm1, %xmm2
movaps %xmm7, %xmm1
movaps %xmm5, 48(%edx)
movaps %xmm4, 32(%edx)
movaps %xmm3, 16(%edx)
movaps %xmm2, (%edx)
lea 64(%edx), %edx
jmp L(Shl4LoopStart)
L(Shl4LoopExit):
movlpd (%ecx), %xmm0
movl 8(%ecx), %esi
movlpd %xmm0, (%edx)
movl %esi, 8(%edx)
POP (%esi)
add $12, %edx
add $12, %ecx
test %al, %al
jz L(ExitHigh)
test $0x01, %al
jnz L(Exit4)
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl %edi, %eax
RETURN
CFI_PUSH (%esi)
.p2align 4
L(Shl8):
movaps -8(%ecx), %xmm1
movaps 8(%ecx), %xmm2
L(Shl8Start):
pcmpeqd %xmm2, %xmm0
pmovmskb %xmm0, %eax
movaps %xmm2, %xmm3
test %eax, %eax
jnz L(Shl8LoopExit)
palignr $8, %xmm1, %xmm2
movaps %xmm2, (%edx)
movaps 24(%ecx), %xmm2
pcmpeqd %xmm2, %xmm0
lea 16(%edx), %edx
pmovmskb %xmm0, %eax
lea 16(%ecx), %ecx
movaps %xmm2, %xmm1
test %eax, %eax
jnz L(Shl8LoopExit)
palignr $8, %xmm3, %xmm2
movaps %xmm2, (%edx)
movaps 24(%ecx), %xmm2
pcmpeqd %xmm2, %xmm0
lea 16(%edx), %edx
pmovmskb %xmm0, %eax
lea 16(%ecx), %ecx
movaps %xmm2, %xmm3
test %eax, %eax
jnz L(Shl8LoopExit)
palignr $8, %xmm1, %xmm2
movaps %xmm2, (%edx)
movaps 24(%ecx), %xmm2
pcmpeqd %xmm2, %xmm0
lea 16(%edx), %edx
pmovmskb %xmm0, %eax
lea 16(%ecx), %ecx
test %eax, %eax
jnz L(Shl8LoopExit)
palignr $8, %xmm3, %xmm2
movaps %xmm2, (%edx)
lea 24(%ecx), %ecx
lea 16(%edx), %edx
mov %ecx, %eax
and $-0x40, %ecx
sub %ecx, %eax
lea -8(%ecx), %ecx
sub %eax, %edx
movaps -8(%ecx), %xmm1
L(Shl8LoopStart):
movaps 8(%ecx), %xmm2
movaps 24(%ecx), %xmm3
movaps %xmm3, %xmm6
movaps 40(%ecx), %xmm4
movaps %xmm4, %xmm7
movaps 56(%ecx), %xmm5
pminub %xmm2, %xmm6
pminub %xmm5, %xmm7
pminub %xmm6, %xmm7
pcmpeqd %xmm0, %xmm7
pmovmskb %xmm7, %eax
movaps %xmm5, %xmm7
palignr $8, %xmm4, %xmm5
palignr $8, %xmm3, %xmm4
test %eax, %eax
jnz L(Shl8Start)
palignr $8, %xmm2, %xmm3
lea 64(%ecx), %ecx
palignr $8, %xmm1, %xmm2
movaps %xmm7, %xmm1
movaps %xmm5, 48(%edx)
movaps %xmm4, 32(%edx)
movaps %xmm3, 16(%edx)
movaps %xmm2, (%edx)
lea 64(%edx), %edx
jmp L(Shl8LoopStart)
L(Shl8LoopExit):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
POP (%esi)
add $8, %edx
add $8, %ecx
test %al, %al
jz L(ExitHigh)
test $0x01, %al
jnz L(Exit4)
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl %edi, %eax
RETURN
CFI_PUSH (%esi)
.p2align 4
L(Shl12):
movaps -12(%ecx), %xmm1
movaps 4(%ecx), %xmm2
L(Shl12Start):
pcmpeqd %xmm2, %xmm0
pmovmskb %xmm0, %eax
movaps %xmm2, %xmm3
test %eax, %eax
jnz L(Shl12LoopExit)
palignr $12, %xmm1, %xmm2
movaps %xmm2, (%edx)
movaps 20(%ecx), %xmm2
pcmpeqd %xmm2, %xmm0
lea 16(%edx), %edx
pmovmskb %xmm0, %eax
lea 16(%ecx), %ecx
movaps %xmm2, %xmm1
test %eax, %eax
jnz L(Shl12LoopExit)
palignr $12, %xmm3, %xmm2
movaps %xmm2, (%edx)
movaps 20(%ecx), %xmm2
pcmpeqd %xmm2, %xmm0
lea 16(%edx), %edx
pmovmskb %xmm0, %eax
lea 16(%ecx), %ecx
movaps %xmm2, %xmm3
test %eax, %eax
jnz L(Shl12LoopExit)
palignr $12, %xmm1, %xmm2
movaps %xmm2, (%edx)
movaps 20(%ecx), %xmm2
pcmpeqd %xmm2, %xmm0
lea 16(%edx), %edx
pmovmskb %xmm0, %eax
lea 16(%ecx), %ecx
test %eax, %eax
jnz L(Shl12LoopExit)
palignr $12, %xmm3, %xmm2
movaps %xmm2, (%edx)
lea 20(%ecx), %ecx
lea 16(%edx), %edx
mov %ecx, %eax
and $-0x40, %ecx
sub %ecx, %eax
lea -4(%ecx), %ecx
sub %eax, %edx
movaps -12(%ecx), %xmm1
L(Shl12LoopStart):
movaps 4(%ecx), %xmm2
movaps 20(%ecx), %xmm3
movaps %xmm3, %xmm6
movaps 36(%ecx), %xmm4
movaps %xmm4, %xmm7
movaps 52(%ecx), %xmm5
pminub %xmm2, %xmm6
pminub %xmm5, %xmm7
pminub %xmm6, %xmm7
pcmpeqd %xmm0, %xmm7
pmovmskb %xmm7, %eax
movaps %xmm5, %xmm7
palignr $12, %xmm4, %xmm5
palignr $12, %xmm3, %xmm4
test %eax, %eax
jnz L(Shl12Start)
palignr $12, %xmm2, %xmm3
lea 64(%ecx), %ecx
palignr $12, %xmm1, %xmm2
movaps %xmm7, %xmm1
movaps %xmm5, 48(%edx)
movaps %xmm4, 32(%edx)
movaps %xmm3, 16(%edx)
movaps %xmm2, (%edx)
lea 64(%edx), %edx
jmp L(Shl12LoopStart)
L(Shl12LoopExit):
movl (%ecx), %esi
movl %esi, (%edx)
mov $4, %esi
.p2align 4
L(CopyFrom1To16Bytes):
add %esi, %edx
add %esi, %ecx
POP (%esi)
test %al, %al
jz L(ExitHigh)
test $0x01, %al
jnz L(Exit4)
L(Exit8):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl %edi, %eax
RETURN
.p2align 4
L(ExitHigh):
test $0x01, %ah
jnz L(Exit12)
L(Exit16):
movdqu (%ecx), %xmm0
movdqu %xmm0, (%edx)
movl %edi, %eax
RETURN
.p2align 4
L(Exit4):
movl (%ecx), %eax
movl %eax, (%edx)
movl %edi, %eax
RETURN
.p2align 4
L(Exit12):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl 8(%ecx), %eax
movl %eax, 8(%edx)
movl %edi, %eax
RETURN
CFI_POP (%edi)
.p2align 4
L(ExitTail4):
movl (%ecx), %eax
movl %eax, (%edx)
movl %edx, %eax
ret
.p2align 4
L(ExitTail8):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl %edx, %eax
ret
.p2align 4
L(ExitTail12):
movlpd (%ecx), %xmm0
movlpd %xmm0, (%edx)
movl 8(%ecx), %eax
movl %eax, 8(%edx)
movl %edx, %eax
ret
.p2align 4
L(ExitTail16):
movdqu (%ecx), %xmm0
movdqu %xmm0, (%edx)
movl %edx, %eax
ret
#ifndef USE_AS_WCSCAT
END (wcscpy_ssse3)
#endif
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