From c85ad42c35e8aa91a6f0f1b8e5c1c361e90244d1 Mon Sep 17 00:00:00 2001 From: Thom Johansen Date: Wed, 22 Feb 2006 22:53:41 +0000 Subject: Didn't mean to commit this, revert. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8794 a1c6a512-1295-4272-9138-f99709370657 --- firmware/common/memcpy_a.S | 256 --------------------------------------------- 1 file changed, 256 deletions(-) (limited to 'firmware') diff --git a/firmware/common/memcpy_a.S b/firmware/common/memcpy_a.S index 3de319903e..9f6c813be3 100644 --- a/firmware/common/memcpy_a.S +++ b/firmware/common/memcpy_a.S @@ -18,11 +18,7 @@ ****************************************************************************/ #include "config.h" -#ifdef CPU_ARM - .section .icode,"ax",%progbits -#else .section .icode,"ax",@progbits -#endif #if CONFIG_CPU == SH7034 .align 2 @@ -879,256 +875,4 @@ __memcpy_fwd_entry: .end: .size memcpy,.end-memcpy -#elif defined(CPU_ARM) -/* - * linux/arch/arm/lib/memcpy.S and copy_template.S - * - * Author: Nicolas Pitre - * Created: Sep 28, 2005 - * Copyright: MontaVista Software, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - - .macro ldr1w ptr reg abort - ldr \reg, [\ptr], #4 - .endm - - .macro ldr4w ptr reg1 reg2 reg3 reg4 abort - ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4} - .endm - - .macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort - ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} - .endm - - .macro ldr1b ptr reg cond=al abort - ldr\cond\()b \reg, [\ptr], #1 - .endm - - .macro str1w ptr reg abort - str \reg, [\ptr], #4 - .endm - - .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort - stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} - .endm - - .macro str1b ptr reg cond=al abort - str\cond\()b \reg, [\ptr], #1 - .endm - - .macro enter reg1 reg2 - stmdb sp!, {r0, \reg1, \reg2} - .endm - - .macro exit reg1 reg2 - ldmfd sp!, {r0, \reg1, \reg2} - .endm - - .text - -/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */ - - .global memcpy - .type memcpy,%function -memcpy: - -/* - * This can be used to enable code to cacheline align the source pointer. - * Experiments on tested architectures (StrongARM and XScale) didn't show - * this a worthwhile thing to do. That might be different in the future. - */ -//#define CALGN(code...) code -#define CALGN(code...) -#define PLD(code...) - - enter r4, lr - - subs r2, r2, #4 - blt 8f - ands ip, r0, #3 - PLD( pld [r1, #0] ) - bne 9f - ands ip, r1, #3 - bne 10f - -1: subs r2, r2, #(28) - stmfd sp!, {r5 - r8} - blt 5f - - CALGN( ands ip, r1, #31 ) - CALGN( rsb r3, ip, #32 ) - CALGN( sbcnes r4, r3, r2 ) @ C is always set here - CALGN( bcs 2f ) - CALGN( adr r4, 6f ) - CALGN( subs r2, r2, r3 ) @ C gets set - CALGN( add pc, r4, ip ) - - PLD( pld [r1, #0] ) -2: PLD( subs r2, r2, #96 ) - PLD( pld [r1, #28] ) - PLD( blt 4f ) - PLD( pld [r1, #60] ) - PLD( pld [r1, #92] ) - -3: PLD( pld [r1, #124] ) -4: ldr8w r1, r3, r4, r5, r6, r7, r8, ip, lr, abort=20f - subs r2, r2, #32 - str8w r0, r3, r4, r5, r6, r7, r8, ip, lr, abort=20f - bge 3b - PLD( cmn r2, #96 ) - PLD( bge 4b ) - -5: ands ip, r2, #28 - rsb ip, ip, #32 - addne pc, pc, ip @ C is always clear here - b 7f -6: nop - ldr1w r1, r3, abort=20f - ldr1w r1, r4, abort=20f - ldr1w r1, r5, abort=20f - ldr1w r1, r6, abort=20f - ldr1w r1, r7, abort=20f - ldr1w r1, r8, abort=20f - ldr1w r1, lr, abort=20f - - add pc, pc, ip - nop - nop - str1w r0, r3, abort=20f - str1w r0, r4, abort=20f - str1w r0, r5, abort=20f - str1w r0, r6, abort=20f - str1w r0, r7, abort=20f - str1w r0, r8, abort=20f - str1w r0, lr, abort=20f - - CALGN( bcs 2b ) - -7: ldmfd sp!, {r5 - r8} - -8: movs r2, r2, lsl #31 - ldr1b r1, r3, ne, abort=21f - ldr1b r1, r4, cs, abort=21f - ldr1b r1, ip, cs, abort=21f - str1b r0, r3, ne, abort=21f - str1b r0, r4, cs, abort=21f - str1b r0, ip, cs, abort=21f - - exit r4, pc - -9: rsb ip, ip, #4 - cmp ip, #2 - ldr1b r1, r3, gt, abort=21f - ldr1b r1, r4, ge, abort=21f - ldr1b r1, lr, abort=21f - str1b r0, r3, gt, abort=21f - str1b r0, r4, ge, abort=21f - subs r2, r2, ip - str1b r0, lr, abort=21f - blt 8b - ands ip, r1, #3 - beq 1b - -10: bic r1, r1, #3 - cmp ip, #2 - ldr1w r1, lr, abort=21f - beq 17f - bgt 18f - - - .macro forward_copy_shift pull push - - subs r2, r2, #28 - blt 14f - - CALGN( ands ip, r1, #31 ) - CALGN( rsb ip, ip, #32 ) - CALGN( sbcnes r4, ip, r2 ) @ C is always set here - CALGN( subcc r2, r2, ip ) - CALGN( bcc 15f ) - -11: stmfd sp!, {r5 - r9} - - PLD( pld [r1, #0] ) - PLD( subs r2, r2, #96 ) - PLD( pld [r1, #28] ) - PLD( blt 13f ) - PLD( pld [r1, #60] ) - PLD( pld [r1, #92] ) - -12: PLD( pld [r1, #124] ) -13: ldr4w r1, r4, r5, r6, r7, abort=19f - mov r3, lr, pull #\pull - subs r2, r2, #32 - ldr4w r1, r8, r9, ip, lr, abort=19f - orr r3, r3, r4, push #\push - mov r4, r4, pull #\pull - orr r4, r4, r5, push #\push - mov r5, r5, pull #\pull - orr r5, r5, r6, push #\push - mov r6, r6, pull #\pull - orr r6, r6, r7, push #\push - mov r7, r7, pull #\pull - orr r7, r7, r8, push #\push - mov r8, r8, pull #\pull - orr r8, r8, r9, push #\push - mov r9, r9, pull #\pull - orr r9, r9, ip, push #\push - mov ip, ip, pull #\pull - orr ip, ip, lr, push #\push - str8w r0, r3, r4, r5, r6, r7, r8, r9, ip, , abort=19f - bge 12b - PLD( cmn r2, #96 ) - PLD( bge 13b ) - - ldmfd sp!, {r5 - r9} - -14: ands ip, r2, #28 - beq 16f - -15: mov r3, lr, pull #\pull - ldr1w r1, lr, abort=21f - subs ip, ip, #4 - orr r3, r3, lr, push #\push - str1w r0, r3, abort=21f - bgt 15b - CALGN( cmp r2, #0 ) - CALGN( bge 11b ) - -16: sub r1, r1, #(\push / 8) - b 8b - - .endm - - - forward_copy_shift pull=8 push=24 - -17: forward_copy_shift pull=16 push=16 - -18: forward_copy_shift pull=24 push=8 - - -/* - * Abort preanble and completion macros. - * If a fixup handler is required then those macros must surround it. - * It is assumed that the fixup code will handle the private part of - * the exit macro. - */ - - .macro copy_abort_preamble -19: ldmfd sp!, {r5 - r9} - b 21f -20: ldmfd sp!, {r5 - r8} -21: - .endm - - .macro copy_abort_end - ldmfd sp!, {r4, pc} - .endm -end: - .size memcpy,.end-memcpy #endif -- cgit v1.2.3