#------------------------------------------------------------------------------ # # Copyright (c) 2008-2009 Apple Inc. All rights reserved. # # All rights reserved. This program and the accompanying materials # are licensed and made available under the terms and conditions of the BSD License # which accompanies this distribution. The full text of the license may be found at # http://opensource.org/licenses/bsd-license.php # # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. # #------------------------------------------------------------------------------ .text .align 2 .globl ASM_PFX(ArmCleanInvalidateDataCache) .globl ASM_PFX(ArmCleanDataCache) .globl ASM_PFX(ArmInvalidateDataCache) .globl ASM_PFX(ArmInvalidateInstructionCache) .globl ASM_PFX(ArmInvalidateDataCacheEntryByMVA) .globl ASM_PFX(ArmCleanDataCacheEntryByMVA) .globl ASM_PFX(ArmCleanInvalidateDataCacheEntryByMVA) .globl ASM_PFX(ArmEnableMmu) .globl ASM_PFX(ArmDisableMmu) .globl ASM_PFX(ArmMmuEnabled) .globl ASM_PFX(ArmEnableDataCache) .globl ASM_PFX(ArmDisableDataCache) .globl ASM_PFX(ArmEnableInstructionCache) .globl ASM_PFX(ArmDisableInstructionCache) .globl ASM_PFX(ArmEnableBranchPrediction) .globl ASM_PFX(ArmDisableBranchPrediction) .globl ASM_PFX(ArmDataMemoryBarrier) .globl ASM_PFX(ArmDataSyncronizationBarrier) .globl ASM_PFX(ArmInstructionSynchronizationBarrier) .set DC_ON, (1<<2) .set IC_ON, (1<<12) #------------------------------------------------------------------------------ ASM_PFX(ArmInvalidateDataCacheEntryByMVA): mcr p15, 0, r0, c7, c6, 1 @ invalidate single data cache line bx lr ASM_PFX(ArmCleanDataCacheEntryByMVA): mcr p15, 0, r0, c7, c10, 1 @ clean single data cache line bx lr ASM_PFX(ArmCleanInvalidateDataCacheEntryByMVA): mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate single data cache line bx lr ASM_PFX(ArmEnableInstructionCache): ldr r1,=IC_ON mrc p15,0,r0,c1,c0,0 @Read control register configuration data orr r0,r0,r1 @Set I bit mcr p15,0,r0,c1,c0,0 @Write control register configuration data bx LR ASM_PFX(ArmDisableInstructionCache): ldr r1,=IC_ON mrc p15,0,r0,c1,c0,0 @Read control register configuration data bic r0,r0,r1 @Clear I bit. mcr p15,0,r0,c1,c0,0 @Write control register configuration data bx LR ASM_PFX(ArmInvalidateInstructionCache): mov r0,#0 mcr p15,0,r0,c7,c5,0 @Invalidate entire Instruction cache. @Also flushes the branch target cache. mov r0,#0 mcr p15,0,r0,c7,c10,4 @Data write buffer bx LR ASM_PFX(ArmEnableMmu): mrc p15,0,R0,c1,c0,0 orr R0,R0,#1 mcr p15,0,R0,c1,c0,0 bx LR ASM_PFX(ArmMmuEnabled): mrc p15,0,R0,c1,c0,0 and R0,R0,#1 bx LR ASM_PFX(ArmDisableMmu): mrc p15,0,R0,c1,c0,0 bic R0,R0,#1 mcr p15,0,R0,c1,c0,0 mov R0,#0 mcr p15,0,R0,c7,c10,4 @Drain write buffer bx LR ASM_PFX(ArmEnableDataCache): ldr R1,=DC_ON mrc p15,0,R0,c1,c0,0 @Read control register configuration data orr R0,R0,R1 @Set C bit mcr p15,0,r0,c1,c0,0 @Write control register configuration data bx LR ASM_PFX(ArmDisableDataCache): ldr R1,=DC_ON mrc p15,0,R0,c1,c0,0 @Read control register configuration data bic R0,R0,R1 @Clear C bit mcr p15,0,r0,c1,c0,0 @Write control register configuration data bx LR ASM_PFX(ArmCleanDataCache): mrc p15,0,r15,c7,c10,3 bne ASM_PFX(ArmCleanDataCache) mov R0,#0 mcr p15,0,R0,c7,c10,4 @Drain write buffer bx LR ASM_PFX(ArmInvalidateDataCache): mov R0,#0 mcr p15,0,R0,c7,c6,0 @Invalidate entire data cache mov R0,#0 mcr p15,0,R0,c7,c10,4 @Drain write buffer bx LR ASM_PFX(ArmCleanInvalidateDataCache): mrc p15,0,r15,c7,c14,3 bne ASM_PFX(ArmCleanInvalidateDataCache) mov R0,#0 mcr p15,0,R0,c7,c10,4 @Drain write buffer bx LR ASM_PFX(ArmEnableBranchPrediction): bx LR @Branch prediction is not supported. ASM_PFX(ArmDisableBranchPrediction): bx LR @Branch prediction is not supported. ASM_PFX(ArmDataMemoryBarrier): mov R0, #0 mcr P15, #0, R0, C7, C10, #5 @ check if this is OK? bx LR ASM_PFX(ArmDataSyncronizationBarrier): mov R0, #0 mcr P15, #0, R0, C7, C10, #4 @ check if this is OK? bx LR ASM_PFX(ArmInstructionSynchronizationBarrier): mov R0, #0 mcr P15, #0, R0, C7, C5, #4 @ check if this is OK? bx LR ASM_FUNCTION_REMOVE_IF_UNREFERENCED