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bionic/libc/arch-x86/silvermont/string/sse2-memmove-slm.S
Varvara Rainchik 5a92284167 Add 32-bit Silvermont-optimized string/memory functions. 
Add following functions:
bcopy, memcpy, memmove, memset, bzero, memcmp, wmemcmp, strlen,
strcpy, strncpy, stpcpy, stpncpy.
Create new directories inside arch-x86 to specify architecture: atom,
silvermont and generic (non atom or silvermont architectures are treated like generic).
Due to introducing optimized versions of stpcpy and stpncpy,
c-implementations of these functions are moved from
common for architectures makefile to arm and mips specific makefiles.

Change-Id: I990f8061c3e9bca1f154119303da9e781c5d086e
Signed-off-by: Varvara Rainchik <varvara.rainchik@intel.com>
2014-05-12 13:56:59 -07:00

674 lines
15 KiB
ArmAsm
Raw Blame History

/*
Copyright (c) 2014, 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.
*/
#include "cache.h"
#ifndef MEMMOVE
# define MEMMOVE memmove
#endif
#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
#ifdef USE_AS_BCOPY
# define SRC PARMS
# define DEST SRC+4
# define LEN DEST+4
#else
# define DEST PARMS
# define SRC DEST+4
# define LEN SRC+4
#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 8 /* Preserve EBX. */
#define ENTRANCE PUSH (%ebx);
#define RETURN_END POP (%ebx); ret
#define RETURN RETURN_END; CFI_PUSH (%ebx)
.section .text.sse2,"ax",@progbits
ENTRY (MEMMOVE)
ENTRANCE
movl LEN(%esp), %ecx
movl SRC(%esp), %eax
movl DEST(%esp), %edx
/* Check whether we should copy backward or forward. */
cmp %eax, %edx
je L(mm_return)
ja L(mm_len_0_or_more_backward)
/* Now do checks for lengths. We do [0..16], [0..32], [0..64], [0..128]
separately. */
cmp $16, %ecx
jbe L(mm_len_0_16_bytes_forward)
cmpl $32, %ecx
jg L(mm_len_32_or_more_forward)
/* Copy [0..32] and return. */
movdqu (%eax), %xmm0
movdqu -16(%eax, %ecx), %xmm1
movdqu %xmm0, (%edx)
movdqu %xmm1, -16(%edx, %ecx)
jmp L(mm_return)
L(mm_len_32_or_more_forward):
cmpl $64, %ecx
jg L(mm_len_64_or_more_forward)
/* Copy [0..64] and return. */
movdqu (%eax), %xmm0
movdqu 16(%eax), %xmm1
movdqu -16(%eax, %ecx), %xmm2
movdqu -32(%eax, %ecx), %xmm3
movdqu %xmm0, (%edx)
movdqu %xmm1, 16(%edx)
movdqu %xmm2, -16(%edx, %ecx)
movdqu %xmm3, -32(%edx, %ecx)
jmp L(mm_return)
L(mm_len_64_or_more_forward):
cmpl $128, %ecx
jg L(mm_len_128_or_more_forward)
/* Copy [0..128] and return. */
movdqu (%eax), %xmm0
movdqu 16(%eax), %xmm1
movdqu 32(%eax), %xmm2
movdqu 48(%eax), %xmm3
movdqu -64(%eax, %ecx), %xmm4
movdqu -48(%eax, %ecx), %xmm5
movdqu -32(%eax, %ecx), %xmm6
movdqu -16(%eax, %ecx), %xmm7
movdqu %xmm0, (%edx)
movdqu %xmm1, 16(%edx)
movdqu %xmm2, 32(%edx)
movdqu %xmm3, 48(%edx)
movdqu %xmm4, -64(%edx, %ecx)
movdqu %xmm5, -48(%edx, %ecx)
movdqu %xmm6, -32(%edx, %ecx)
movdqu %xmm7, -16(%edx, %ecx)
jmp L(mm_return)
L(mm_len_128_or_more_forward):
cmp $SHARED_CACHE_SIZE_HALF, %ecx
jae L(mm_large_page_forward)
PUSH (%esi)
PUSH (%edi)
movl %eax, %esi
movl %edx, %edi
/* Aligning the address of destination. */
movdqu (%esi), %xmm0
movdqu 16(%esi), %xmm1
movdqu 32(%esi), %xmm2
movdqu 48(%esi), %xmm3
leal 64(%edi), %edx
andl $-64, %edx
movl %esi, %eax
subl %edi, %eax
movdqu (%edx, %eax), %xmm4
movdqu 16(%edx, %eax), %xmm5
movdqu 32(%edx, %eax), %xmm6
movdqu 48(%edx, %eax), %xmm7
movdqu %xmm0, (%edi)
movdqu %xmm1, 16(%edi)
movdqu %xmm2, 32(%edi)
movdqu %xmm3, 48(%edi)
movdqa %xmm4, (%edx)
movdqa %xmm5, 16(%edx)
movdqa %xmm6, 32(%edx)
movdqa %xmm7, 48(%edx)
addl $64, %edx
leal (%edi, %ecx), %ebx
andl $-64, %ebx
cmp %edx, %ebx
jbe L(mm_copy_remaining_forward)
.p2align 4
L(mm_main_loop_forward):
prefetcht0 128(%edx, %eax)
movdqu (%edx, %eax), %xmm0
movdqu 16(%edx, %eax), %xmm1
movdqu 32(%edx, %eax), %xmm2
movdqu 48(%edx, %eax), %xmm3
movdqa %xmm0, (%edx)
movdqa %xmm1, 16(%edx)
movdqa %xmm2, 32(%edx)
movdqa %xmm3, 48(%edx)
leal 64(%edx), %edx
cmp %edx, %ebx
ja L(mm_main_loop_forward)
L(mm_copy_remaining_forward):
addl %edi, %ecx
subl %edx, %ecx
/* We copied all up till %edx position in the dst.
In %ecx now is how many bytes are left to copy.
Now we need to advance %esi. */
leal (%edx, %eax), %esi
L(mm_remaining_0_64_bytes_forward):
cmp $32, %ecx
ja L(mm_remaining_33_64_bytes_forward)
cmp $16, %ecx
ja L(mm_remaining_17_32_bytes_forward)
testl %ecx, %ecx
.p2align 4,,2
je L(mm_return_pop_all)
cmpb $8, %cl
ja L(mm_remaining_9_16_bytes_forward)
cmpb $4, %cl
.p2align 4,,5
ja L(mm_remaining_5_8_bytes_forward)
cmpb $2, %cl
.p2align 4,,1
ja L(mm_remaining_3_4_bytes_forward)
movzbl -1(%esi,%ecx), %eax
movzbl (%esi), %ebx
movb %al, -1(%edx,%ecx)
movb %bl, (%edx)
jmp L(mm_return_pop_all)
L(mm_remaining_33_64_bytes_forward):
movdqu (%esi), %xmm0
movdqu 16(%esi), %xmm1
movdqu -32(%esi, %ecx), %xmm2
movdqu -16(%esi, %ecx), %xmm3
movdqu %xmm0, (%edx)
movdqu %xmm1, 16(%edx)
movdqu %xmm2, -32(%edx, %ecx)
movdqu %xmm3, -16(%edx, %ecx)
jmp L(mm_return_pop_all)
L(mm_remaining_17_32_bytes_forward):
movdqu (%esi), %xmm0
movdqu -16(%esi, %ecx), %xmm1
movdqu %xmm0, (%edx)
movdqu %xmm1, -16(%edx, %ecx)
jmp L(mm_return_pop_all)
L(mm_remaining_3_4_bytes_forward):
movzwl -2(%esi,%ecx), %eax
movzwl (%esi), %ebx
movw %ax, -2(%edx,%ecx)
movw %bx, (%edx)
jmp L(mm_return_pop_all)
L(mm_remaining_5_8_bytes_forward):
movl (%esi), %eax
movl -4(%esi,%ecx), %ebx
movl %eax, (%edx)
movl %ebx, -4(%edx,%ecx)
jmp L(mm_return_pop_all)
L(mm_remaining_9_16_bytes_forward):
movq (%esi), %xmm0
movq -8(%esi, %ecx), %xmm1
movq %xmm0, (%edx)
movq %xmm1, -8(%edx, %ecx)
jmp L(mm_return_pop_all)
L(mm_len_0_16_bytes_forward):
testb $24, %cl
jne L(mm_len_9_16_bytes_forward)
testb $4, %cl
.p2align 4,,5
jne L(mm_len_5_8_bytes_forward)
testl %ecx, %ecx
.p2align 4,,2
je L(mm_return)
testb $2, %cl
.p2align 4,,1
jne L(mm_len_2_4_bytes_forward)
movzbl -1(%eax,%ecx), %ebx
movzbl (%eax), %eax
movb %bl, -1(%edx,%ecx)
movb %al, (%edx)
jmp L(mm_return)
L(mm_len_2_4_bytes_forward):
movzwl -2(%eax,%ecx), %ebx
movzwl (%eax), %eax
movw %bx, -2(%edx,%ecx)
movw %ax, (%edx)
jmp L(mm_return)
L(mm_len_5_8_bytes_forward):
movl (%eax), %ebx
movl -4(%eax,%ecx), %eax
movl %ebx, (%edx)
movl %eax, -4(%edx,%ecx)
jmp L(mm_return)
L(mm_len_9_16_bytes_forward):
movq (%eax), %xmm0
movq -8(%eax, %ecx), %xmm1
movq %xmm0, (%edx)
movq %xmm1, -8(%edx, %ecx)
jmp L(mm_return)
/* The code for copying backwards. */
L(mm_len_0_or_more_backward):
/* Now do checks for lengths. We do [0..16], [0..32], [0..64], [0..128]
separately. */
cmp $16, %ecx
jbe L(mm_len_0_16_bytes_backward)
cmpl $32, %ecx
jg L(mm_len_32_or_more_backward)
/* Copy [0..32] and return. */
movdqu (%eax), %xmm0
movdqu -16(%eax, %ecx), %xmm1
movdqu %xmm0, (%edx)
movdqu %xmm1, -16(%edx, %ecx)
jmp L(mm_return)
L(mm_len_32_or_more_backward):
cmpl $64, %ecx
jg L(mm_len_64_or_more_backward)
/* Copy [0..64] and return. */
movdqu (%eax), %xmm0
movdqu 16(%eax), %xmm1
movdqu -16(%eax, %ecx), %xmm2
movdqu -32(%eax, %ecx), %xmm3
movdqu %xmm0, (%edx)
movdqu %xmm1, 16(%edx)
movdqu %xmm2, -16(%edx, %ecx)
movdqu %xmm3, -32(%edx, %ecx)
jmp L(mm_return)
L(mm_len_64_or_more_backward):
cmpl $128, %ecx
jg L(mm_len_128_or_more_backward)
/* Copy [0..128] and return. */
movdqu (%eax), %xmm0
movdqu 16(%eax), %xmm1
movdqu 32(%eax), %xmm2
movdqu 48(%eax), %xmm3
movdqu -64(%eax, %ecx), %xmm4
movdqu -48(%eax, %ecx), %xmm5
movdqu -32(%eax, %ecx), %xmm6
movdqu -16(%eax, %ecx), %xmm7
movdqu %xmm0, (%edx)
movdqu %xmm1, 16(%edx)
movdqu %xmm2, 32(%edx)
movdqu %xmm3, 48(%edx)
movdqu %xmm4, -64(%edx, %ecx)
movdqu %xmm5, -48(%edx, %ecx)
movdqu %xmm6, -32(%edx, %ecx)
movdqu %xmm7, -16(%edx, %ecx)
jmp L(mm_return)
L(mm_len_128_or_more_backward):
cmp $SHARED_CACHE_SIZE_HALF, %ecx
jae L(mm_large_page_backward)
PUSH (%esi)
PUSH (%edi)
/* Aligning the address of destination. We need to save
16 bits from the source in order not to overwrite them. */
movdqu -16(%eax, %ecx), %xmm0
movdqu -32(%eax, %ecx), %xmm1
movdqu -48(%eax, %ecx), %xmm2
movdqu -64(%eax, %ecx), %xmm3
leal (%edx, %ecx), %edi
andl $-64, %edi
movl %eax, %esi
subl %edx, %esi
movdqu -16(%edi, %esi), %xmm4
movdqu -32(%edi, %esi), %xmm5
movdqu -48(%edi, %esi), %xmm6
movdqu -64(%edi, %esi), %xmm7
movdqu %xmm0, -16(%edx, %ecx)
movdqu %xmm1, -32(%edx, %ecx)
movdqu %xmm2, -48(%edx, %ecx)
movdqu %xmm3, -64(%edx, %ecx)
movdqa %xmm4, -16(%edi)
movdqa %xmm5, -32(%edi)
movdqa %xmm6, -48(%edi)
movdqa %xmm7, -64(%edi)
leal -64(%edi), %edi
leal 64(%edx), %ebx
andl $-64, %ebx
/* Compute in %ecx how many bytes are left to copy after
the main loop stops. */
movl %ebx, %ecx
subl %edx, %ecx
cmp %edi, %ebx
jb L(mm_main_loop_backward)
POP (%edi)
POP (%esi)
jmp L(mm_len_0_or_more_backward)
.p2align 4
L(mm_main_loop_backward):
prefetcht0 -128(%edi, %esi)
movdqu -64(%edi, %esi), %xmm0
movdqu -48(%edi, %esi), %xmm1
movdqu -32(%edi, %esi), %xmm2
movdqu -16(%edi, %esi), %xmm3
movdqa %xmm0, -64(%edi)
movdqa %xmm1, -48(%edi)
movdqa %xmm2, -32(%edi)
movdqa %xmm3, -16(%edi)
leal -64(%edi), %edi
cmp %edi, %ebx
jb L(mm_main_loop_backward)
POP (%edi)
POP (%esi)
jmp L(mm_len_0_or_more_backward)
/* Copy [0..16] and return. */
L(mm_len_0_16_bytes_backward):
testb $24, %cl
jnz L(mm_len_9_16_bytes_backward)
testb $4, %cl
.p2align 4,,5
jnz L(mm_len_5_8_bytes_backward)
testl %ecx, %ecx
.p2align 4,,2
je L(mm_return)
testb $2, %cl
.p2align 4,,1
jne L(mm_len_3_4_bytes_backward)
movzbl -1(%eax,%ecx), %ebx
movzbl (%eax), %eax
movb %bl, -1(%edx,%ecx)
movb %al, (%edx)
jmp L(mm_return)
L(mm_len_3_4_bytes_backward):
movzwl -2(%eax,%ecx), %ebx
movzwl (%eax), %eax
movw %bx, -2(%edx,%ecx)
movw %ax, (%edx)
jmp L(mm_return)
L(mm_len_9_16_bytes_backward):
PUSH (%esi)
movl -4(%eax,%ecx), %ebx
movl -8(%eax,%ecx), %esi
movl %ebx, -4(%edx,%ecx)
movl %esi, -8(%edx,%ecx)
subl $8, %ecx
POP (%esi)
jmp L(mm_len_0_16_bytes_backward)
L(mm_len_5_8_bytes_backward):
movl (%eax), %ebx
movl -4(%eax,%ecx), %eax
movl %ebx, (%edx)
movl %eax, -4(%edx,%ecx)
L(mm_return):
movl %edx, %eax
RETURN
L(mm_return_pop_all):
movl %edi, %eax
POP (%edi)
POP (%esi)
RETURN
/* Big length copy forward part. */
L(mm_large_page_forward):
/* Aligning the address of destination. We need to save
16 bits from the source in order not to overwrite them. */
PUSH (%esi)
PUSH (%edi)
movl %eax, %esi
movl %edx, %edi
movdqu (%esi), %xmm0
movdqu 16(%esi), %xmm1
movdqu 32(%esi), %xmm2
movdqu 48(%esi), %xmm3
leal 64(%edi), %edx
andl $-64, %edx
movl %esi, %eax
subl %edi, %eax
movdqu (%edx, %eax), %xmm4
movdqu 16(%edx, %eax), %xmm5
movdqu 32(%edx, %eax), %xmm6
movdqu 48(%edx, %eax), %xmm7
movdqu %xmm0, (%edi)
movdqu %xmm1, 16(%edi)
movdqu %xmm2, 32(%edi)
movdqu %xmm3, 48(%edi)
movntdq %xmm4, (%edx)
movntdq %xmm5, 16(%edx)
movntdq %xmm6, 32(%edx)
movntdq %xmm7, 48(%edx)
addl $64, %edx
leal (%edi, %ecx), %ebx
andl $-128, %ebx
cmp %edx, %ebx
jbe L(mm_copy_remaining_forward)
.p2align 4
L(mm_large_page_loop_forward):
movdqu (%edx, %eax), %xmm0
movdqu 16(%edx, %eax), %xmm1
movdqu 32(%edx, %eax), %xmm2
movdqu 48(%edx, %eax), %xmm3
movdqu 64(%edx, %eax), %xmm4
movdqu 80(%edx, %eax), %xmm5
movdqu 96(%edx, %eax), %xmm6
movdqu 112(%edx, %eax), %xmm7
movntdq %xmm0, (%edx)
movntdq %xmm1, 16(%edx)
movntdq %xmm2, 32(%edx)
movntdq %xmm3, 48(%edx)
movntdq %xmm4, 64(%edx)
movntdq %xmm5, 80(%edx)
movntdq %xmm6, 96(%edx)
movntdq %xmm7, 112(%edx)
leal 128(%edx), %edx
cmp %edx, %ebx
ja L(mm_large_page_loop_forward)
sfence
addl %edi, %ecx
subl %edx, %ecx
/* We copied all up till %edx position in the dst.
In %ecx now is how many bytes are left to copy.
Now we need to advance %esi. */
leal (%edx, %eax), %esi
cmp $64, %ecx
jb L(mm_remaining_0_64_bytes_forward)
movdqu (%esi), %xmm0
movdqu 16(%esi), %xmm1
movdqu 32(%esi), %xmm2
movdqu 48(%esi), %xmm3
movdqu -64(%esi, %ecx), %xmm4
movdqu -48(%esi, %ecx), %xmm5
movdqu -32(%esi, %ecx), %xmm6
movdqu -16(%esi, %ecx), %xmm7
movdqu %xmm0, (%edx)
movdqu %xmm1, 16(%edx)
movdqu %xmm2, 32(%edx)
movdqu %xmm3, 48(%edx)
movdqu %xmm4, -64(%edx, %ecx)
movdqu %xmm5, -48(%edx, %ecx)
movdqu %xmm6, -32(%edx, %ecx)
movdqu %xmm7, -16(%edx, %ecx)
jmp L(mm_return_pop_all)
/* Big length copy backward part. */
L(mm_large_page_backward):
/* Aligning the address of destination. We need to save
16 bits from the source in order not to overwrite them. */
PUSH (%esi)
PUSH (%edi)
movdqu -16(%eax, %ecx), %xmm0
movdqu -32(%eax, %ecx), %xmm1
movdqu -48(%eax, %ecx), %xmm2
movdqu -64(%eax, %ecx), %xmm3
leal (%edx, %ecx), %edi
andl $-64, %edi
movl %eax, %esi
subl %edx, %esi
movdqu -16(%edi, %esi), %xmm4
movdqu -32(%edi, %esi), %xmm5
movdqu -48(%edi, %esi), %xmm6
movdqu -64(%edi, %esi), %xmm7
movdqu %xmm0, -16(%edx, %ecx)
movdqu %xmm1, -32(%edx, %ecx)
movdqu %xmm2, -48(%edx, %ecx)
movdqu %xmm3, -64(%edx, %ecx)
movntdq %xmm4, -16(%edi)
movntdq %xmm5, -32(%edi)
movntdq %xmm6, -48(%edi)
movntdq %xmm7, -64(%edi)
leal -64(%edi), %edi
leal 128(%edx), %ebx
andl $-64, %ebx
/* Compute in %ecx how many bytes are left to copy after
the main loop stops. */
movl %ebx, %ecx
subl %edx, %ecx
cmp %edi, %ebx
jae L(mm_len_0_or_more_backward)
.p2align 4
L(mm_large_page_loop_backward):
movdqu -64(%edi, %esi), %xmm0
movdqu -48(%edi, %esi), %xmm1
movdqu -32(%edi, %esi), %xmm2
movdqu -16(%edi, %esi), %xmm3
movntdq %xmm0, -64(%edi)
movntdq %xmm1, -48(%edi)
movntdq %xmm2, -32(%edi)
movntdq %xmm3, -16(%edi)
leal -64(%edi), %edi
cmp %edi, %ebx
jb L(mm_large_page_loop_backward)
POP (%edi)
POP (%esi)
jmp L(mm_len_0_or_more_backward)
END (MEMMOVE)
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