1 #------------------------------------------------------------------------------
3 # Copyright (c) 2008-2009 Apple Inc. All rights reserved.
5 # All rights reserved. This program and the accompanying materials
6 # are licensed and made available under the terms and conditions of the BSD License
7 # which accompanies this distribution. The full text of the license may be found at
8 # http://opensource.org/licenses/bsd-license.php
10 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13 #------------------------------------------------------------------------------
17 .globl ASM_PFX(Cp15IdCode)
18 .globl ASM_PFX(Cp15CacheInfo)
19 .globl ASM_PFX(ArmEnableInterrupts)
20 .globl ASM_PFX(ArmDisableInterrupts)
21 .globl ASM_PFX(ArmGetInterruptState)
22 .globl ASM_PFX(ArmInvalidateTlb)
23 .globl ASM_PFX(ArmSetTranslationTableBaseAddress)
24 .globl ASM_PFX(ArmGetTranslationTableBaseAddress)
25 .globl ASM_PFX(ArmSetDomainAccessControl)
26 .globl ASM_PFX(CPSRMaskInsert)
27 .globl ASM_PFX(CPSRRead)
29 #------------------------------------------------------------------------------
35 ASM_PFX(Cp15CacheInfo):
39 ASM_PFX(ArmEnableInterrupts):
41 bic R0,R0,#0x80 @Enable IRQ interrupts
45 ASM_PFX(ArmDisableInterrupts):
47 orr R1,R0,#0x80 @Disable IRQ interrupts
54 ASM_PFX(ArmGetInterruptState):
56 tst R0,#0x80 @Check if IRQ is enabled.
61 ASM_PFX(ArmInvalidateTlb):
66 ASM_PFX(ArmSetTranslationTableBaseAddress):
70 ASM_PFX(ArmGetTranslationTableBaseAddress):
75 ASM_PFX(ArmSetDomainAccessControl):
79 ASM_PFX(CPSRMaskInsert): @ on entry, r0 is the mask and r1 is the field to insert
80 stmfd sp!, {r4-r12, lr} @ save all the banked registers
81 mov r3, sp @ copy the stack pointer into a non-banked register
82 mrs r2, cpsr @ read the cpsr
83 bic r2, r2, r0 @ clear mask in the cpsr
84 and r1, r1, r0 @ clear bits outside the mask in the input
85 orr r2, r2, r1 @ set field
86 msr cpsr_cxsf, r2 @ write back cpsr (may have caused a mode switch)
87 mov sp, r3 @ restore stack pointer
88 ldmfd sp!, {r4-r12, lr} @ restore registers
89 bx lr @ return (hopefully thumb-safe!)
95 ASM_FUNCTION_REMOVE_IF_UNREFERENCED