mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
242 lines
4.1 KiB
242 lines
4.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* Copyright (C) IBM Corporation, 2011 |
|
* Derived from copyuser_power7.s by Anton Blanchard <anton@au.ibm.com> |
|
* Author - Balbir Singh <bsingharora@gmail.com> |
|
*/ |
|
#include <asm/ppc_asm.h> |
|
#include <asm/errno.h> |
|
#include <asm/export.h> |
|
|
|
.macro err1 |
|
100: |
|
EX_TABLE(100b,.Ldo_err1) |
|
.endm |
|
|
|
.macro err2 |
|
200: |
|
EX_TABLE(200b,.Ldo_err2) |
|
.endm |
|
|
|
.macro err3 |
|
300: EX_TABLE(300b,.Ldone) |
|
.endm |
|
|
|
.Ldo_err2: |
|
ld r22,STK_REG(R22)(r1) |
|
ld r21,STK_REG(R21)(r1) |
|
ld r20,STK_REG(R20)(r1) |
|
ld r19,STK_REG(R19)(r1) |
|
ld r18,STK_REG(R18)(r1) |
|
ld r17,STK_REG(R17)(r1) |
|
ld r16,STK_REG(R16)(r1) |
|
ld r15,STK_REG(R15)(r1) |
|
ld r14,STK_REG(R14)(r1) |
|
addi r1,r1,STACKFRAMESIZE |
|
.Ldo_err1: |
|
/* Do a byte by byte copy to get the exact remaining size */ |
|
mtctr r7 |
|
46: |
|
err3; lbz r0,0(r4) |
|
addi r4,r4,1 |
|
err3; stb r0,0(r3) |
|
addi r3,r3,1 |
|
bdnz 46b |
|
li r3,0 |
|
blr |
|
|
|
.Ldone: |
|
mfctr r3 |
|
blr |
|
|
|
|
|
_GLOBAL(copy_mc_generic) |
|
mr r7,r5 |
|
cmpldi r5,16 |
|
blt .Lshort_copy |
|
|
|
.Lcopy: |
|
/* Get the source 8B aligned */ |
|
neg r6,r4 |
|
mtocrf 0x01,r6 |
|
clrldi r6,r6,(64-3) |
|
|
|
bf cr7*4+3,1f |
|
err1; lbz r0,0(r4) |
|
addi r4,r4,1 |
|
err1; stb r0,0(r3) |
|
addi r3,r3,1 |
|
subi r7,r7,1 |
|
|
|
1: bf cr7*4+2,2f |
|
err1; lhz r0,0(r4) |
|
addi r4,r4,2 |
|
err1; sth r0,0(r3) |
|
addi r3,r3,2 |
|
subi r7,r7,2 |
|
|
|
2: bf cr7*4+1,3f |
|
err1; lwz r0,0(r4) |
|
addi r4,r4,4 |
|
err1; stw r0,0(r3) |
|
addi r3,r3,4 |
|
subi r7,r7,4 |
|
|
|
3: sub r5,r5,r6 |
|
cmpldi r5,128 |
|
|
|
mflr r0 |
|
stdu r1,-STACKFRAMESIZE(r1) |
|
std r14,STK_REG(R14)(r1) |
|
std r15,STK_REG(R15)(r1) |
|
std r16,STK_REG(R16)(r1) |
|
std r17,STK_REG(R17)(r1) |
|
std r18,STK_REG(R18)(r1) |
|
std r19,STK_REG(R19)(r1) |
|
std r20,STK_REG(R20)(r1) |
|
std r21,STK_REG(R21)(r1) |
|
std r22,STK_REG(R22)(r1) |
|
std r0,STACKFRAMESIZE+16(r1) |
|
|
|
blt 5f |
|
srdi r6,r5,7 |
|
mtctr r6 |
|
|
|
/* Now do cacheline (128B) sized loads and stores. */ |
|
.align 5 |
|
4: |
|
err2; ld r0,0(r4) |
|
err2; ld r6,8(r4) |
|
err2; ld r8,16(r4) |
|
err2; ld r9,24(r4) |
|
err2; ld r10,32(r4) |
|
err2; ld r11,40(r4) |
|
err2; ld r12,48(r4) |
|
err2; ld r14,56(r4) |
|
err2; ld r15,64(r4) |
|
err2; ld r16,72(r4) |
|
err2; ld r17,80(r4) |
|
err2; ld r18,88(r4) |
|
err2; ld r19,96(r4) |
|
err2; ld r20,104(r4) |
|
err2; ld r21,112(r4) |
|
err2; ld r22,120(r4) |
|
addi r4,r4,128 |
|
err2; std r0,0(r3) |
|
err2; std r6,8(r3) |
|
err2; std r8,16(r3) |
|
err2; std r9,24(r3) |
|
err2; std r10,32(r3) |
|
err2; std r11,40(r3) |
|
err2; std r12,48(r3) |
|
err2; std r14,56(r3) |
|
err2; std r15,64(r3) |
|
err2; std r16,72(r3) |
|
err2; std r17,80(r3) |
|
err2; std r18,88(r3) |
|
err2; std r19,96(r3) |
|
err2; std r20,104(r3) |
|
err2; std r21,112(r3) |
|
err2; std r22,120(r3) |
|
addi r3,r3,128 |
|
subi r7,r7,128 |
|
bdnz 4b |
|
|
|
clrldi r5,r5,(64-7) |
|
|
|
/* Up to 127B to go */ |
|
5: srdi r6,r5,4 |
|
mtocrf 0x01,r6 |
|
|
|
6: bf cr7*4+1,7f |
|
err2; ld r0,0(r4) |
|
err2; ld r6,8(r4) |
|
err2; ld r8,16(r4) |
|
err2; ld r9,24(r4) |
|
err2; ld r10,32(r4) |
|
err2; ld r11,40(r4) |
|
err2; ld r12,48(r4) |
|
err2; ld r14,56(r4) |
|
addi r4,r4,64 |
|
err2; std r0,0(r3) |
|
err2; std r6,8(r3) |
|
err2; std r8,16(r3) |
|
err2; std r9,24(r3) |
|
err2; std r10,32(r3) |
|
err2; std r11,40(r3) |
|
err2; std r12,48(r3) |
|
err2; std r14,56(r3) |
|
addi r3,r3,64 |
|
subi r7,r7,64 |
|
|
|
7: ld r14,STK_REG(R14)(r1) |
|
ld r15,STK_REG(R15)(r1) |
|
ld r16,STK_REG(R16)(r1) |
|
ld r17,STK_REG(R17)(r1) |
|
ld r18,STK_REG(R18)(r1) |
|
ld r19,STK_REG(R19)(r1) |
|
ld r20,STK_REG(R20)(r1) |
|
ld r21,STK_REG(R21)(r1) |
|
ld r22,STK_REG(R22)(r1) |
|
addi r1,r1,STACKFRAMESIZE |
|
|
|
/* Up to 63B to go */ |
|
bf cr7*4+2,8f |
|
err1; ld r0,0(r4) |
|
err1; ld r6,8(r4) |
|
err1; ld r8,16(r4) |
|
err1; ld r9,24(r4) |
|
addi r4,r4,32 |
|
err1; std r0,0(r3) |
|
err1; std r6,8(r3) |
|
err1; std r8,16(r3) |
|
err1; std r9,24(r3) |
|
addi r3,r3,32 |
|
subi r7,r7,32 |
|
|
|
/* Up to 31B to go */ |
|
8: bf cr7*4+3,9f |
|
err1; ld r0,0(r4) |
|
err1; ld r6,8(r4) |
|
addi r4,r4,16 |
|
err1; std r0,0(r3) |
|
err1; std r6,8(r3) |
|
addi r3,r3,16 |
|
subi r7,r7,16 |
|
|
|
9: clrldi r5,r5,(64-4) |
|
|
|
/* Up to 15B to go */ |
|
.Lshort_copy: |
|
mtocrf 0x01,r5 |
|
bf cr7*4+0,12f |
|
err1; lwz r0,0(r4) /* Less chance of a reject with word ops */ |
|
err1; lwz r6,4(r4) |
|
addi r4,r4,8 |
|
err1; stw r0,0(r3) |
|
err1; stw r6,4(r3) |
|
addi r3,r3,8 |
|
subi r7,r7,8 |
|
|
|
12: bf cr7*4+1,13f |
|
err1; lwz r0,0(r4) |
|
addi r4,r4,4 |
|
err1; stw r0,0(r3) |
|
addi r3,r3,4 |
|
subi r7,r7,4 |
|
|
|
13: bf cr7*4+2,14f |
|
err1; lhz r0,0(r4) |
|
addi r4,r4,2 |
|
err1; sth r0,0(r3) |
|
addi r3,r3,2 |
|
subi r7,r7,2 |
|
|
|
14: bf cr7*4+3,15f |
|
err1; lbz r0,0(r4) |
|
err1; stb r0,0(r3) |
|
|
|
15: li r3,0 |
|
blr |
|
|
|
EXPORT_SYMBOL_GPL(copy_mc_generic);
|
|
|