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1 | #------------------------------------------------------------------------------ | |
2 | # | |
3 | # Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> | |
4 | # | |
5 | # 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 | INTERWORK_FUNC(Cp15IdCode) | |
19 | .globl ASM_PFX(Cp15CacheInfo) | |
20 | INTERWORK_FUNC(Cp15CacheInfo) | |
21 | .globl ASM_PFX(ArmEnableInterrupts) | |
22 | INTERWORK_FUNC(ArmEnableInterrupts) | |
23 | .globl ASM_PFX(ArmDisableInterrupts) | |
24 | INTERWORK_FUNC(ArmDisableInterrupts) | |
25 | .globl ASM_PFX(ArmGetInterruptState) | |
26 | INTERWORK_FUNC(ArmGetInterruptState) | |
27 | .globl ASM_PFX(ArmEnableFiq) | |
28 | INTERWORK_FUNC(ArmEnableFiq) | |
29 | .globl ASM_PFX(ArmDisableFiq) | |
30 | INTERWORK_FUNC(ArmDisableFiq) | |
31 | .globl ASM_PFX(ArmGetFiqState) | |
32 | INTERWORK_FUNC(ArmGetFiqState) | |
33 | .globl ASM_PFX(ArmInvalidateTlb) | |
34 | INTERWORK_FUNC(ArmInvalidateTlb) | |
35 | .globl ASM_PFX(ArmSetTranslationTableBaseAddress) | |
36 | INTERWORK_FUNC(ArmSetTranslationTableBaseAddress) | |
37 | .globl ASM_PFX(ArmGetTranslationTableBaseAddress) | |
38 | INTERWORK_FUNC(ArmGetTranslationTableBaseAddress) | |
39 | .globl ASM_PFX(ArmSetDomainAccessControl) | |
40 | INTERWORK_FUNC(ArmSetDomainAccessControl) | |
41 | .globl ASM_PFX(CPSRMaskInsert) | |
42 | INTERWORK_FUNC(CPSRMaskInsert) | |
43 | .globl ASM_PFX(CPSRRead) | |
44 | INTERWORK_FUNC(CPSRRead) | |
45 | ||
46 | ||
47 | #------------------------------------------------------------------------------ | |
48 | ||
49 | ASM_PFX(Cp15IdCode): | |
50 | mrc p15,0,R0,c0,c0,0 | |
51 | bx LR | |
52 | ||
53 | ASM_PFX(Cp15CacheInfo): | |
54 | mrc p15,0,R0,c0,c0,1 | |
55 | bx LR | |
56 | ||
57 | ASM_PFX(ArmEnableInterrupts): | |
58 | mrs R0,CPSR | |
59 | bic R0,R0,#0x80 @Enable IRQ interrupts | |
60 | msr CPSR_c,R0 | |
61 | bx LR | |
62 | ||
63 | ASM_PFX(ArmDisableInterrupts): | |
64 | mrs R0,CPSR | |
65 | orr R1,R0,#0x80 @Disable IRQ interrupts | |
66 | msr CPSR_c,R1 | |
67 | tst R0,#0x80 | |
68 | moveq R0,#1 | |
69 | movne R0,#0 | |
70 | bx LR | |
71 | ||
72 | ASM_PFX(ArmGetInterruptState): | |
73 | mrs R0,CPSR | |
74 | tst R0,#0x80 @Check if IRQ is enabled. | |
75 | moveq R0,#1 | |
76 | movne R0,#0 | |
77 | bx LR | |
78 | ||
79 | ASM_PFX(ArmEnableFiq): | |
80 | mrs R0,CPSR | |
81 | bic R0,R0,#0x40 @Enable FIQ interrupts | |
82 | msr CPSR_c,R0 | |
83 | bx LR | |
84 | ||
85 | ASM_PFX(ArmDisableFiq): | |
86 | mrs R0,CPSR | |
87 | orr R1,R0,#0x40 @Disable FIQ interrupts | |
88 | msr CPSR_c,R1 | |
89 | tst R0,#0x80 | |
90 | moveq R0,#1 | |
91 | movne R0,#0 | |
92 | bx LR | |
93 | ||
94 | ASM_PFX(ArmGetFiqState): | |
95 | mrs R0,CPSR | |
96 | tst R0,#0x80 @Check if FIQ is enabled. | |
97 | moveq R0,#1 | |
98 | movne R0,#0 | |
99 | bx LR | |
100 | ||
101 | ASM_PFX(ArmInvalidateTlb): | |
102 | mov r0,#0 | |
103 | mcr p15,0,r0,c8,c7,0 | |
104 | bx lr | |
105 | ||
106 | ASM_PFX(ArmSetTranslationTableBaseAddress): | |
107 | mcr p15,0,r0,c2,c0,0 | |
108 | bx lr | |
109 | ||
110 | ASM_PFX(ArmGetTranslationTableBaseAddress): | |
111 | mrc p15,0,r0,c2,c0,0 | |
112 | bx lr | |
113 | ||
114 | ||
115 | ASM_PFX(ArmSetDomainAccessControl): | |
116 | mcr p15,0,r0,c3,c0,0 | |
117 | bx lr | |
118 | ||
119 | ASM_PFX(CPSRMaskInsert): @ on entry, r0 is the mask and r1 is the field to insert | |
120 | stmfd sp!, {r4-r12, lr} @ save all the banked registers | |
121 | mov r3, sp @ copy the stack pointer into a non-banked register | |
122 | mrs r2, cpsr @ read the cpsr | |
123 | bic r2, r2, r0 @ clear mask in the cpsr | |
124 | and r1, r1, r0 @ clear bits outside the mask in the input | |
125 | orr r2, r2, r1 @ set field | |
126 | msr cpsr_cxsf, r2 @ write back cpsr (may have caused a mode switch) | |
127 | mov sp, r3 @ restore stack pointer | |
128 | ldmfd sp!, {r4-r12, lr} @ restore registers | |
129 | bx lr @ return (hopefully thumb-safe!) | |
130 | ||
131 | ASM_PFX(CPSRRead): | |
132 | mrs r0, cpsr | |
133 | bx lr | |
134 | ||
135 | ASM_FUNCTION_REMOVE_IF_UNREFERENCED |