isa-l/crc/aarch64/crc32_iscsi_3crc_fold.S
Taiju Yamada 1187583a97 Fixes for aarch64 mac
- It should be fine to enable pmull always on Apple Silicon
- macOS 12+ is required for PMULL instruction.
- Changed the conditional macro to __APPLE__
- Rewritten dispatcher using sysctlbyname
- Use __USER_LABEL_PREFIX__
- Use __TEXT,__const as readonly section
- use ASM_DEF_RODATA macro
- fix func decl

Change-Id: I800593f21085d8187b480c8bb3ab2bd70c4a6974
Signed-off-by: Taiju Yamada <tyamada@bi.a.u-tokyo.ac.jp>
2022-10-28 08:27:26 -07:00

102 lines
3.0 KiB
ArmAsm

########################################################################
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.text
.align 6
.arch armv8-a+crc+crypto
#include "crc32_aarch64_common.h"
.macro crc32_u64 dst,src,data
crc32cx \dst,\src,\data
.endm
.macro crc32_u32 dst,src,data
crc32cw \dst,\src,\data
.endm
.macro crc32_u16 dst,src,data
crc32ch \dst,\src,\data
.endm
.macro crc32_u8 dst,src,data
crc32cb \dst,\src,\data
.endm
.macro declare_var_vector_reg name:req,reg:req
q\name .req q\reg
v\name .req v\reg
s\name .req s\reg
d\name .req d\reg
.endm
BUF .req x0
LEN .req x1
wCRC .req w2
crc0 .req w2
crc1 .req w3
crc2 .req w4
xcrc0 .req x2
xcrc1 .req x3
const_adr .req x3
ptr_crc0 .req x0
ptr_crc1 .req x6
ptr_crc2 .req x7
crc0_data0 .req x9
crc0_data1 .req x10
crc1_data0 .req x11
crc1_data1 .req x12
crc2_data0 .req x13
crc2_data1 .req x14
wdata .req w3
data0 .req x3
data1 .req x4
data2 .req x5
data3 .req x6
declare_var_vector_reg tmp0,0
declare_var_vector_reg tmp1,1
declare_var_vector_reg const0,2
declare_var_vector_reg const1,3
/**
unsigned int crc32_iscsi(
unsigned char *BUF,
int LEN,
unsigned int wCRC
);
*/
.global cdecl(crc32_iscsi_3crc_fold)
#ifndef __APPLE__
.type crc32_iscsi_3crc_fold, %function
#endif
cdecl(crc32_iscsi_3crc_fold):
crc32_3crc_fold crc32c
#ifndef __APPLE__
.size crc32_iscsi_3crc_fold, .-crc32_iscsi_3crc_fold
#endif