projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ef2b01e A |
1 | #------------------------------------------------------------------------------ |
| 2 | # | |
| 3 | # Copyright (c) 2008-2009 Apple Inc. All rights reserved. | |
| 4 | # | |
| 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 | |
| 9 | # | |
| 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. | |
| 12 | # | |
| 13 | #------------------------------------------------------------------------------ | |
| 14 | ||
| 15 | .text | |
| 16 | .align 2 | |
| 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(ArmSetDomainAccessControl) | |
| 25 | .globl ASM_PFX(CPSRMaskInsert) | |
| 26 | .globl ASM_PFX(CPSRRead) | |
| 27 | ||
| 28 | #------------------------------------------------------------------------------ | |
| 29 | ||
| 30 | ASM_PFX(Cp15IdCode): | |
| 31 | mrc p15,0,R0,c0,c0,0 | |
| 32 | bx LR | |
| 33 | ||
| 34 | ASM_PFX(Cp15CacheInfo): | |
| 35 | mrc p15,0,R0,c0,c0,1 | |
| 36 | bx LR | |
| 37 | ||
| 38 | ASM_PFX(ArmEnableInterrupts): | |
| 39 | mrs R0,CPSR | |
| 40 | bic R0,R0,#0x80 @Enable IRQ interrupts | |
| 41 | msr CPSR_c,R0 | |
| 42 | bx LR | |
| 43 | ||
| 44 | ASM_PFX(ArmDisableInterrupts): | |
| 45 | mrs R0,CPSR | |
| 46 | orr R1,R0,#0x80 @Disable IRQ interrupts | |
| 47 | msr CPSR_c,R1 | |
| 48 | tst R0,#0x80 | |
| 49 | moveq R0,#1 | |
| 50 | movne R0,#0 | |
| 51 | bx LR | |
| 52 | ||
| 53 | ASM_PFX(ArmGetInterruptState): | |
| 54 | mrs R0,CPSR | |
| 55 | tst R0,#0x80 @Check if IRQ is enabled. | |
| 56 | moveq R0,#1 | |
| 57 | movne R0,#0 | |
| 58 | bx LR | |
| 59 | ||
| 60 | ASM_PFX(ArmInvalidateTlb): | |
| 61 | mov r0,#0 | |
| 62 | mcr p15,0,r0,c8,c7,0 | |
| 63 | bx lr | |
| 64 | ||
| 65 | ASM_PFX(ArmSetTranslationTableBaseAddress): | |
| 66 | mcr p15,0,r0,c2,c0,0 | |
| 67 | bx lr | |
| 68 | ||
| 69 | ASM_PFX(ArmSetDomainAccessControl): | |
| 70 | mcr p15,0,r0,c3,c0,0 | |
| 71 | bx lr | |
| 72 | ||
| 73 | ASM_PFX(CPSRMaskInsert): @ on entry, r0 is the mask and r1 is the field to insert | |
| 74 | stmfd sp!, {r4-r12, lr} @ save all the banked registers | |
| 75 | mov r3, sp @ copy the stack pointer into a non-banked register | |
| 76 | mrs r2, cpsr @ read the cpsr | |
| 77 | bic r2, r2, r0 @ clear mask in the cpsr | |
| 78 | and r1, r1, r0 @ clear bits outside the mask in the input | |
| 79 | orr r2, r2, r1 @ set field | |
| 80 | msr cpsr_cxsf, r2 @ write back cpsr (may have caused a mode switch) | |
| 81 | mov sp, r3 @ restore stack pointer | |
| 82 | ldmfd sp!, {r4-r12, lr} @ restore registers | |
| 83 | bx lr @ return (hopefully thumb-safe!) | |
| 84 | ||
| 85 | ASM_PFX(CPSRRead): | |
| 86 | mrs r0, cpsr | |
| 87 | bx lr | |
| 88 | ||
| 89 | ASM_FUNCTION_REMOVE_IF_UNREFERENCED |