| /* |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| * |
| * Copyright (C) IBM Corporation, 2012 |
| * |
| * Author: Anton Blanchard <anton@au.ibm.com> |
| */ |
| #include <asm/ppc_asm.h> |
| |
| _GLOBAL(memcpy_power7) |
| |
| #ifdef __BIG_ENDIAN__ |
| #define LVS(VRT,RA,RB) lvsl VRT,RA,RB |
| #define VPERM(VRT,VRA,VRB,VRC) vperm VRT,VRA,VRB,VRC |
| #else |
| #define LVS(VRT,RA,RB) lvsr VRT,RA,RB |
| #define VPERM(VRT,VRA,VRB,VRC) vperm VRT,VRB,VRA,VRC |
| #endif |
| |
| #ifdef CONFIG_ALTIVEC |
| cmpldi r5,16 |
| cmpldi cr1,r5,4096 |
| |
| std r3,-STACKFRAMESIZE+STK_REG(R31)(r1) |
| |
| blt .Lshort_copy |
| bgt cr1,.Lvmx_copy |
| #else |
| cmpldi r5,16 |
| |
| std r3,-STACKFRAMESIZE+STK_REG(R31)(r1) |
| |
| blt .Lshort_copy |
| #endif |
| |
| .Lnonvmx_copy: |
| /* Get the source 8B aligned */ |
| neg r6,r4 |
| mtocrf 0x01,r6 |
| clrldi r6,r6,(64-3) |
| |
| bf cr7*4+3,1f |
| lbz r0,0(r4) |
| addi r4,r4,1 |
| stb r0,0(r3) |
| addi r3,r3,1 |
| |
| 1: bf cr7*4+2,2f |
| lhz r0,0(r4) |
| addi r4,r4,2 |
| sth r0,0(r3) |
| addi r3,r3,2 |
| |
| 2: bf cr7*4+1,3f |
| lwz r0,0(r4) |
| addi r4,r4,4 |
| stw r0,0(r3) |
| addi r3,r3,4 |
| |
| 3: sub r5,r5,r6 |
| cmpldi r5,128 |
| blt 5f |
| |
| 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) |
| |
| srdi r6,r5,7 |
| mtctr r6 |
| |
| /* Now do cacheline (128B) sized loads and stores. */ |
| .align 5 |
| 4: |
| ld r0,0(r4) |
| ld r6,8(r4) |
| ld r7,16(r4) |
| ld r8,24(r4) |
| ld r9,32(r4) |
| ld r10,40(r4) |
| ld r11,48(r4) |
| ld r12,56(r4) |
| ld r14,64(r4) |
| ld r15,72(r4) |
| ld r16,80(r4) |
| ld r17,88(r4) |
| ld r18,96(r4) |
| ld r19,104(r4) |
| ld r20,112(r4) |
| ld r21,120(r4) |
| addi r4,r4,128 |
| std r0,0(r3) |
| std r6,8(r3) |
| std r7,16(r3) |
| std r8,24(r3) |
| std r9,32(r3) |
| std r10,40(r3) |
| std r11,48(r3) |
| std r12,56(r3) |
| std r14,64(r3) |
| std r15,72(r3) |
| std r16,80(r3) |
| std r17,88(r3) |
| std r18,96(r3) |
| std r19,104(r3) |
| std r20,112(r3) |
| std r21,120(r3) |
| addi r3,r3,128 |
| bdnz 4b |
| |
| clrldi r5,r5,(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 127B to go */ |
| 5: srdi r6,r5,4 |
| mtocrf 0x01,r6 |
| |
| 6: bf cr7*4+1,7f |
| ld r0,0(r4) |
| ld r6,8(r4) |
| ld r7,16(r4) |
| ld r8,24(r4) |
| ld r9,32(r4) |
| ld r10,40(r4) |
| ld r11,48(r4) |
| ld r12,56(r4) |
| addi r4,r4,64 |
| std r0,0(r3) |
| std r6,8(r3) |
| std r7,16(r3) |
| std r8,24(r3) |
| std r9,32(r3) |
| std r10,40(r3) |
| std r11,48(r3) |
| std r12,56(r3) |
| addi r3,r3,64 |
| |
| /* Up to 63B to go */ |
| 7: bf cr7*4+2,8f |
| ld r0,0(r4) |
| ld r6,8(r4) |
| ld r7,16(r4) |
| ld r8,24(r4) |
| addi r4,r4,32 |
| std r0,0(r3) |
| std r6,8(r3) |
| std r7,16(r3) |
| std r8,24(r3) |
| addi r3,r3,32 |
| |
| /* Up to 31B to go */ |
| 8: bf cr7*4+3,9f |
| ld r0,0(r4) |
| ld r6,8(r4) |
| addi r4,r4,16 |
| std r0,0(r3) |
| std r6,8(r3) |
| addi r3,r3,16 |
| |
| 9: clrldi r5,r5,(64-4) |
| |
| /* Up to 15B to go */ |
| .Lshort_copy: |
| mtocrf 0x01,r5 |
| bf cr7*4+0,12f |
| lwz r0,0(r4) /* Less chance of a reject with word ops */ |
| lwz r6,4(r4) |
| addi r4,r4,8 |
| stw r0,0(r3) |
| stw r6,4(r3) |
| addi r3,r3,8 |
| |
| 12: bf cr7*4+1,13f |
| lwz r0,0(r4) |
| addi r4,r4,4 |
| stw r0,0(r3) |
| addi r3,r3,4 |
| |
| 13: bf cr7*4+2,14f |
| lhz r0,0(r4) |
| addi r4,r4,2 |
| sth r0,0(r3) |
| addi r3,r3,2 |
| |
| 14: bf cr7*4+3,15f |
| lbz r0,0(r4) |
| stb r0,0(r3) |
| |
| 15: ld r3,-STACKFRAMESIZE+STK_REG(R31)(r1) |
| blr |
| |
| .Lunwind_stack_nonvmx_copy: |
| addi r1,r1,STACKFRAMESIZE |
| b .Lnonvmx_copy |
| |
| #ifdef CONFIG_ALTIVEC |
| .Lvmx_copy: |
| mflr r0 |
| std r4,-STACKFRAMESIZE+STK_REG(R30)(r1) |
| std r5,-STACKFRAMESIZE+STK_REG(R29)(r1) |
| std r0,16(r1) |
| stdu r1,-STACKFRAMESIZE(r1) |
| bl enter_vmx_copy |
| cmpwi cr1,r3,0 |
| ld r0,STACKFRAMESIZE+16(r1) |
| ld r3,STK_REG(R31)(r1) |
| ld r4,STK_REG(R30)(r1) |
| ld r5,STK_REG(R29)(r1) |
| mtlr r0 |
| |
| /* |
| * We prefetch both the source and destination using enhanced touch |
| * instructions. We use a stream ID of 0 for the load side and |
| * 1 for the store side. |
| */ |
| clrrdi r6,r4,7 |
| clrrdi r9,r3,7 |
| ori r9,r9,1 /* stream=1 */ |
| |
| srdi r7,r5,7 /* length in cachelines, capped at 0x3FF */ |
| cmpldi r7,0x3FF |
| ble 1f |
| li r7,0x3FF |
| 1: lis r0,0x0E00 /* depth=7 */ |
| sldi r7,r7,7 |
| or r7,r7,r0 |
| ori r10,r7,1 /* stream=1 */ |
| |
| lis r8,0x8000 /* GO=1 */ |
| clrldi r8,r8,32 |
| |
| .machine push |
| .machine "power4" |
| dcbt 0,r6,0b01000 |
| dcbt 0,r7,0b01010 |
| dcbtst 0,r9,0b01000 |
| dcbtst 0,r10,0b01010 |
| eieio |
| dcbt 0,r8,0b01010 /* GO */ |
| .machine pop |
| |
| beq cr1,.Lunwind_stack_nonvmx_copy |
| |
| /* |
| * If source and destination are not relatively aligned we use a |
| * slower permute loop. |
| */ |
| xor r6,r4,r3 |
| rldicl. r6,r6,0,(64-4) |
| bne .Lvmx_unaligned_copy |
| |
| /* Get the destination 16B aligned */ |
| neg r6,r3 |
| mtocrf 0x01,r6 |
| clrldi r6,r6,(64-4) |
| |
| bf cr7*4+3,1f |
| lbz r0,0(r4) |
| addi r4,r4,1 |
| stb r0,0(r3) |
| addi r3,r3,1 |
| |
| 1: bf cr7*4+2,2f |
| lhz r0,0(r4) |
| addi r4,r4,2 |
| sth r0,0(r3) |
| addi r3,r3,2 |
| |
| 2: bf cr7*4+1,3f |
| lwz r0,0(r4) |
| addi r4,r4,4 |
| stw r0,0(r3) |
| addi r3,r3,4 |
| |
| 3: bf cr7*4+0,4f |
| ld r0,0(r4) |
| addi r4,r4,8 |
| std r0,0(r3) |
| addi r3,r3,8 |
| |
| 4: sub r5,r5,r6 |
| |
| /* Get the desination 128B aligned */ |
| neg r6,r3 |
| srdi r7,r6,4 |
| mtocrf 0x01,r7 |
| clrldi r6,r6,(64-7) |
| |
| li r9,16 |
| li r10,32 |
| li r11,48 |
| |
| bf cr7*4+3,5f |
| lvx v1,0,r4 |
| addi r4,r4,16 |
| stvx v1,0,r3 |
| addi r3,r3,16 |
| |
| 5: bf cr7*4+2,6f |
| lvx v1,0,r4 |
| lvx v0,r4,r9 |
| addi r4,r4,32 |
| stvx v1,0,r3 |
| stvx v0,r3,r9 |
| addi r3,r3,32 |
| |
| 6: bf cr7*4+1,7f |
| lvx v3,0,r4 |
| lvx v2,r4,r9 |
| lvx v1,r4,r10 |
| lvx v0,r4,r11 |
| addi r4,r4,64 |
| stvx v3,0,r3 |
| stvx v2,r3,r9 |
| stvx v1,r3,r10 |
| stvx v0,r3,r11 |
| addi r3,r3,64 |
| |
| 7: sub r5,r5,r6 |
| srdi r6,r5,7 |
| |
| std r14,STK_REG(R14)(r1) |
| std r15,STK_REG(R15)(r1) |
| std r16,STK_REG(R16)(r1) |
| |
| li r12,64 |
| li r14,80 |
| li r15,96 |
| li r16,112 |
| |
| mtctr r6 |
| |
| /* |
| * Now do cacheline sized loads and stores. By this stage the |
| * cacheline stores are also cacheline aligned. |
| */ |
| .align 5 |
| 8: |
| lvx v7,0,r4 |
| lvx v6,r4,r9 |
| lvx v5,r4,r10 |
| lvx v4,r4,r11 |
| lvx v3,r4,r12 |
| lvx v2,r4,r14 |
| lvx v1,r4,r15 |
| lvx v0,r4,r16 |
| addi r4,r4,128 |
| stvx v7,0,r3 |
| stvx v6,r3,r9 |
| stvx v5,r3,r10 |
| stvx v4,r3,r11 |
| stvx v3,r3,r12 |
| stvx v2,r3,r14 |
| stvx v1,r3,r15 |
| stvx v0,r3,r16 |
| addi r3,r3,128 |
| bdnz 8b |
| |
| ld r14,STK_REG(R14)(r1) |
| ld r15,STK_REG(R15)(r1) |
| ld r16,STK_REG(R16)(r1) |
| |
| /* Up to 127B to go */ |
| clrldi r5,r5,(64-7) |
| srdi r6,r5,4 |
| mtocrf 0x01,r6 |
| |
| bf cr7*4+1,9f |
| lvx v3,0,r4 |
| lvx v2,r4,r9 |
| lvx v1,r4,r10 |
| lvx v0,r4,r11 |
| addi r4,r4,64 |
| stvx v3,0,r3 |
| stvx v2,r3,r9 |
| stvx v1,r3,r10 |
| stvx v0,r3,r11 |
| addi r3,r3,64 |
| |
| 9: bf cr7*4+2,10f |
| lvx v1,0,r4 |
| lvx v0,r4,r9 |
| addi r4,r4,32 |
| stvx v1,0,r3 |
| stvx v0,r3,r9 |
| addi r3,r3,32 |
| |
| 10: bf cr7*4+3,11f |
| lvx v1,0,r4 |
| addi r4,r4,16 |
| stvx v1,0,r3 |
| addi r3,r3,16 |
| |
| /* Up to 15B to go */ |
| 11: clrldi r5,r5,(64-4) |
| mtocrf 0x01,r5 |
| bf cr7*4+0,12f |
| ld r0,0(r4) |
| addi r4,r4,8 |
| std r0,0(r3) |
| addi r3,r3,8 |
| |
| 12: bf cr7*4+1,13f |
| lwz r0,0(r4) |
| addi r4,r4,4 |
| stw r0,0(r3) |
| addi r3,r3,4 |
| |
| 13: bf cr7*4+2,14f |
| lhz r0,0(r4) |
| addi r4,r4,2 |
| sth r0,0(r3) |
| addi r3,r3,2 |
| |
| 14: bf cr7*4+3,15f |
| lbz r0,0(r4) |
| stb r0,0(r3) |
| |
| 15: addi r1,r1,STACKFRAMESIZE |
| ld r3,-STACKFRAMESIZE+STK_REG(R31)(r1) |
| b exit_vmx_copy /* tail call optimise */ |
| |
| .Lvmx_unaligned_copy: |
| /* Get the destination 16B aligned */ |
| neg r6,r3 |
| mtocrf 0x01,r6 |
| clrldi r6,r6,(64-4) |
| |
| bf cr7*4+3,1f |
| lbz r0,0(r4) |
| addi r4,r4,1 |
| stb r0,0(r3) |
| addi r3,r3,1 |
| |
| 1: bf cr7*4+2,2f |
| lhz r0,0(r4) |
| addi r4,r4,2 |
| sth r0,0(r3) |
| addi r3,r3,2 |
| |
| 2: bf cr7*4+1,3f |
| lwz r0,0(r4) |
| addi r4,r4,4 |
| stw r0,0(r3) |
| addi r3,r3,4 |
| |
| 3: bf cr7*4+0,4f |
| lwz r0,0(r4) /* Less chance of a reject with word ops */ |
| lwz r7,4(r4) |
| addi r4,r4,8 |
| stw r0,0(r3) |
| stw r7,4(r3) |
| addi r3,r3,8 |
| |
| 4: sub r5,r5,r6 |
| |
| /* Get the desination 128B aligned */ |
| neg r6,r3 |
| srdi r7,r6,4 |
| mtocrf 0x01,r7 |
| clrldi r6,r6,(64-7) |
| |
| li r9,16 |
| li r10,32 |
| li r11,48 |
| |
| LVS(v16,0,r4) /* Setup permute control vector */ |
| lvx v0,0,r4 |
| addi r4,r4,16 |
| |
| bf cr7*4+3,5f |
| lvx v1,0,r4 |
| VPERM(v8,v0,v1,v16) |
| addi r4,r4,16 |
| stvx v8,0,r3 |
| addi r3,r3,16 |
| vor v0,v1,v1 |
| |
| 5: bf cr7*4+2,6f |
| lvx v1,0,r4 |
| VPERM(v8,v0,v1,v16) |
| lvx v0,r4,r9 |
| VPERM(v9,v1,v0,v16) |
| addi r4,r4,32 |
| stvx v8,0,r3 |
| stvx v9,r3,r9 |
| addi r3,r3,32 |
| |
| 6: bf cr7*4+1,7f |
| lvx v3,0,r4 |
| VPERM(v8,v0,v3,v16) |
| lvx v2,r4,r9 |
| VPERM(v9,v3,v2,v16) |
| lvx v1,r4,r10 |
| VPERM(v10,v2,v1,v16) |
| lvx v0,r4,r11 |
| VPERM(v11,v1,v0,v16) |
| addi r4,r4,64 |
| stvx v8,0,r3 |
| stvx v9,r3,r9 |
| stvx v10,r3,r10 |
| stvx v11,r3,r11 |
| addi r3,r3,64 |
| |
| 7: sub r5,r5,r6 |
| srdi r6,r5,7 |
| |
| std r14,STK_REG(R14)(r1) |
| std r15,STK_REG(R15)(r1) |
| std r16,STK_REG(R16)(r1) |
| |
| li r12,64 |
| li r14,80 |
| li r15,96 |
| li r16,112 |
| |
| mtctr r6 |
| |
| /* |
| * Now do cacheline sized loads and stores. By this stage the |
| * cacheline stores are also cacheline aligned. |
| */ |
| .align 5 |
| 8: |
| lvx v7,0,r4 |
| VPERM(v8,v0,v7,v16) |
| lvx v6,r4,r9 |
| VPERM(v9,v7,v6,v16) |
| lvx v5,r4,r10 |
| VPERM(v10,v6,v5,v16) |
| lvx v4,r4,r11 |
| VPERM(v11,v5,v4,v16) |
| lvx v3,r4,r12 |
| VPERM(v12,v4,v3,v16) |
| lvx v2,r4,r14 |
| VPERM(v13,v3,v2,v16) |
| lvx v1,r4,r15 |
| VPERM(v14,v2,v1,v16) |
| lvx v0,r4,r16 |
| VPERM(v15,v1,v0,v16) |
| addi r4,r4,128 |
| stvx v8,0,r3 |
| stvx v9,r3,r9 |
| stvx v10,r3,r10 |
| stvx v11,r3,r11 |
| stvx v12,r3,r12 |
| stvx v13,r3,r14 |
| stvx v14,r3,r15 |
| stvx v15,r3,r16 |
| addi r3,r3,128 |
| bdnz 8b |
| |
| ld r14,STK_REG(R14)(r1) |
| ld r15,STK_REG(R15)(r1) |
| ld r16,STK_REG(R16)(r1) |
| |
| /* Up to 127B to go */ |
| clrldi r5,r5,(64-7) |
| srdi r6,r5,4 |
| mtocrf 0x01,r6 |
| |
| bf cr7*4+1,9f |
| lvx v3,0,r4 |
| VPERM(v8,v0,v3,v16) |
| lvx v2,r4,r9 |
| VPERM(v9,v3,v2,v16) |
| lvx v1,r4,r10 |
| VPERM(v10,v2,v1,v16) |
| lvx v0,r4,r11 |
| VPERM(v11,v1,v0,v16) |
| addi r4,r4,64 |
| stvx v8,0,r3 |
| stvx v9,r3,r9 |
| stvx v10,r3,r10 |
| stvx v11,r3,r11 |
| addi r3,r3,64 |
| |
| 9: bf cr7*4+2,10f |
| lvx v1,0,r4 |
| VPERM(v8,v0,v1,v16) |
| lvx v0,r4,r9 |
| VPERM(v9,v1,v0,v16) |
| addi r4,r4,32 |
| stvx v8,0,r3 |
| stvx v9,r3,r9 |
| addi r3,r3,32 |
| |
| 10: bf cr7*4+3,11f |
| lvx v1,0,r4 |
| VPERM(v8,v0,v1,v16) |
| addi r4,r4,16 |
| stvx v8,0,r3 |
| addi r3,r3,16 |
| |
| /* Up to 15B to go */ |
| 11: clrldi r5,r5,(64-4) |
| addi r4,r4,-16 /* Unwind the +16 load offset */ |
| mtocrf 0x01,r5 |
| bf cr7*4+0,12f |
| lwz r0,0(r4) /* Less chance of a reject with word ops */ |
| lwz r6,4(r4) |
| addi r4,r4,8 |
| stw r0,0(r3) |
| stw r6,4(r3) |
| addi r3,r3,8 |
| |
| 12: bf cr7*4+1,13f |
| lwz r0,0(r4) |
| addi r4,r4,4 |
| stw r0,0(r3) |
| addi r3,r3,4 |
| |
| 13: bf cr7*4+2,14f |
| lhz r0,0(r4) |
| addi r4,r4,2 |
| sth r0,0(r3) |
| addi r3,r3,2 |
| |
| 14: bf cr7*4+3,15f |
| lbz r0,0(r4) |
| stb r0,0(r3) |
| |
| 15: addi r1,r1,STACKFRAMESIZE |
| ld r3,-STACKFRAMESIZE+STK_REG(R31)(r1) |
| b exit_vmx_copy /* tail call optimise */ |
| #endif /* CONFIG_ALTIVEC */ |
