X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/de355530ae67247cbd0da700edb3a2a1dae884c2..8ad349bb6ed4a0be06e34c92be0d98b92e078db4:/osfmk/kdp/ml/ppc/kdp_misc.s diff --git a/osfmk/kdp/ml/ppc/kdp_misc.s b/osfmk/kdp/ml/ppc/kdp_misc.s index 850b3c232..a0ee96129 100644 --- a/osfmk/kdp/ml/ppc/kdp_misc.s +++ b/osfmk/kdp/ml/ppc/kdp_misc.s @@ -1,23 +1,31 @@ /* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. - * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. - * - * @APPLE_LICENSE_HEADER_END@ + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the + * License may not be used to create, or enable the creation or + * redistribution of, unlawful or unlicensed copies of an Apple operating + * system, or to circumvent, violate, or enable the circumvention or + * violation of, any terms of an Apple operating system software license + * agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this + * file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ */ #include #include @@ -25,59 +33,41 @@ #include #include -.set kLog2CacheLineSize, 5 -.set kCacheLineSize, 32 - -ENTRY(kdp_flush_cache, TAG_NO_FRAME_USED) - cmpi cr0,0,r4,0 /* is this zero length? */ - add r4,r3,r4 /* calculate last byte + 1 */ - subi r4,r4,1 /* calculate last byte */ - - srwi r5,r3,kLog2CacheLineSize /* calc first cache line index */ - srwi r4,r4,kLog2CacheLineSize /* calc last cache line index */ - beq cr0, LdataToCodeDone /* done if zero length */ - - subf r4,r5,r4 /* calc diff (# lines minus 1) */ - addi r4,r4,1 /* # of cache lines to flush */ - slwi r5,r5,kLog2CacheLineSize /* calc addr of first cache line */ - - /* flush the data cache lines */ - mr r3,r5 /* starting address for loop */ - mtctr r4 /* loop count */ -LdataToCodeFlushLoop: - dcbf 0, r3 /* flush the data cache line */ - addi r3,r3,kCacheLineSize /* advance to next cache line */ - bdnz LdataToCodeFlushLoop /* loop until count is zero */ - sync /* wait until RAM is valid */ - - /* invalidate the code cache lines */ - mr r3,r5 /* starting address for loop */ - mtctr r4 /* loop count */ -LdataToCodeInvalidateLoop: - icbi 0, r3 /* invalidate code cache line */ - addi r3,r3,kCacheLineSize /* advance to next cache line */ - bdnz LdataToCodeInvalidateLoop /* loop until count is zero */ - sync /* wait until last icbi completes */ - isync /* discard prefetched instructions */ -LdataToCodeDone: - blr /* return nothing */ - ENTRY(kdp_sync_cache, TAG_NO_FRAME_USED) sync /* data sync */ isync /* inst sync */ blr /* return nothing */ -ENTRY(kdp_xlate_off, TAG_NO_FRAME_USED) - mfmsr r3 - rlwinm r3,r3,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off - rlwinm r3,r3,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off - rlwinm r4, r3, 0, MSR_DR_BIT+1, MSR_IR_BIT-1 - mtmsr r4 - isync - blr -ENTRY(kdp_xlate_restore, TAG_NO_FRAME_USED) - mtmsr r3 - isync - blr +; +; This is a really stupid physical copy. 1 whole byte at a time... +; Source and dest are long longs. We do this with 64-bit on if +; supported. +; + + .align 5 + .globl EXT(kdp_copy_phys) + +LEXT(kdp_copy_phys) + mflr r12 ; Save return + + bl EXT(ml_set_physical_disabled) ; No DR and get 64-bit + + rlwinm r3,r3,0,1,0 ; Dup low to high source + rlwinm r5,r5,0,1,0 ; Dup low to high dest + rlwimi r3,r4,0,0,31 ; Copy bottom on in source + rlwimi r5,r6,0,0,31 ; Copy bottom on in dest + +kcpagain: addic. r7,r7,-1 ; Drop count + blt-- kcpdone ; All done... + lbz r0,0(r3) ; Grab a whole one + stb r0,0(r5) ; Lay it gently down + addi r3,r3,1 ; Next source + addi r5,r5,1 ; Next destination + b kcpagain ; Once more with feeling... + +kcpdone: bl EXT(ml_restore) ; Put trans, etc back + mtlr r12 ; Restore return + blr ; Come again please... +