projects / apple / objc4.git / blame
| Commit | Line | Data |
|---|---|---|
| 8972963c A |
1 | #if __arm__ |
| 2 | ||
| 3 | #include <arm/arch.h> | |
| 7257e56c | 4 | #include <mach/vm_param.h> |
| 8972963c A |
5 | |
| 6 | .syntax unified | |
| 7 | ||
| 8 | .text | |
| 9 | ||
| 8070259c A |
10 | .private_extern __a2a3_tramphead |
| 11 | .private_extern __a2a3_firsttramp | |
| 12 | .private_extern __a2a3_trampend | |
| cd5f04f5 | 13 | |
| 8070259c A |
14 | // Trampoline machinery assumes the trampolines are Thumb function pointers |
| 15 | #if !__thumb2__ | |
| 16 | # error sorry | |
| cd5f04f5 A |
17 | #endif |
| 18 | ||
| 8070259c A |
19 | .thumb |
| 20 | .thumb_func __a2a3_tramphead | |
| 21 | .thumb_func __a2a3_firsttramp | |
| 22 | .thumb_func __a2a3_trampend | |
| 23 | ||
| 24 | .align PAGE_MAX_SHIFT | |
| 8972963c A |
25 | __a2a3_tramphead: |
| 26 | /* | |
| 8972963c | 27 | r1 == self |
| 8070259c | 28 | r12 == pc of trampoline's first instruction + PC bias |
| 8972963c A |
29 | lr == original return address |
| 30 | */ | |
| 31 | ||
| 8972963c | 32 | mov r2, r1 // _cmd = self |
| 8972963c | 33 | |
| 8070259c A |
34 | // Trampoline's data is one page before the trampoline text. |
| 35 | // Also correct PC bias of 4 bytes. | |
| 36 | sub r12, #PAGE_MAX_SIZE | |
| 37 | ldr r1, [r12, #-4] // self = block object | |
| 38 | ldr pc, [r1, #12] // tail call block->invoke | |
| 8972963c A |
39 | // not reached |
| 40 | ||
| 8070259c A |
41 | // Align trampolines to 8 bytes |
| 42 | .align 3 | |
| 43 | ||
| 8972963c | 44 | .macro TrampolineEntry |
| 8070259c | 45 | mov r12, pc |
| 8972963c | 46 | b __a2a3_tramphead |
| 8070259c A |
47 | .align 3 |
| 48 | .endmacro | |
| 49 | ||
| 50 | .macro TrampolineEntryX16 | |
| 51 | TrampolineEntry | |
| 52 | TrampolineEntry | |
| 53 | TrampolineEntry | |
| 54 | TrampolineEntry | |
| 55 | ||
| 56 | TrampolineEntry | |
| 57 | TrampolineEntry | |
| 58 | TrampolineEntry | |
| 59 | TrampolineEntry | |
| 60 | ||
| 61 | TrampolineEntry | |
| 62 | TrampolineEntry | |
| 63 | TrampolineEntry | |
| 64 | TrampolineEntry | |
| 65 | ||
| 66 | TrampolineEntry | |
| 67 | TrampolineEntry | |
| 68 | TrampolineEntry | |
| 69 | TrampolineEntry | |
| 70 | .endmacro | |
| 71 | ||
| 72 | .macro TrampolineEntryX256 | |
| 73 | TrampolineEntryX16 | |
| 74 | TrampolineEntryX16 | |
| 75 | TrampolineEntryX16 | |
| 76 | TrampolineEntryX16 | |
| 77 | ||
| 78 | TrampolineEntryX16 | |
| 79 | TrampolineEntryX16 | |
| 80 | TrampolineEntryX16 | |
| 81 | TrampolineEntryX16 | |
| 82 | ||
| 83 | TrampolineEntryX16 | |
| 84 | TrampolineEntryX16 | |
| 85 | TrampolineEntryX16 | |
| 86 | TrampolineEntryX16 | |
| 87 | ||
| 88 | TrampolineEntryX16 | |
| 89 | TrampolineEntryX16 | |
| 90 | TrampolineEntryX16 | |
| 91 | TrampolineEntryX16 | |
| 8972963c A |
92 | .endmacro |
| 93 | ||
| 8972963c A |
94 | .private_extern __a2a3_firsttramp |
| 95 | __a2a3_firsttramp: | |
| 8070259c A |
96 | // 2048-2 trampolines to fill 16K page |
| 97 | TrampolineEntryX256 | |
| 98 | TrampolineEntryX256 | |
| 99 | TrampolineEntryX256 | |
| 100 | TrampolineEntryX256 | |
| 101 | ||
| 102 | TrampolineEntryX256 | |
| 103 | TrampolineEntryX256 | |
| 104 | TrampolineEntryX256 | |
| 105 | ||
| 106 | TrampolineEntryX16 | |
| 107 | TrampolineEntryX16 | |
| 108 | TrampolineEntryX16 | |
| 109 | TrampolineEntryX16 | |
| 110 | ||
| 111 | TrampolineEntryX16 | |
| 112 | TrampolineEntryX16 | |
| 113 | TrampolineEntryX16 | |
| 114 | TrampolineEntryX16 | |
| 115 | ||
| 116 | TrampolineEntryX16 | |
| 117 | TrampolineEntryX16 | |
| 118 | TrampolineEntryX16 | |
| 119 | TrampolineEntryX16 | |
| 120 | ||
| 121 | TrampolineEntryX16 | |
| 122 | TrampolineEntryX16 | |
| 123 | TrampolineEntryX16 | |
| 124 | ||
| 125 | TrampolineEntry | |
| 126 | TrampolineEntry | |
| 127 | TrampolineEntry | |
| 128 | TrampolineEntry | |
| 129 | ||
| 130 | TrampolineEntry | |
| 131 | TrampolineEntry | |
| 132 | TrampolineEntry | |
| 133 | TrampolineEntry | |
| 134 | ||
| 135 | TrampolineEntry | |
| 136 | TrampolineEntry | |
| 137 | TrampolineEntry | |
| 138 | TrampolineEntry | |
| 8972963c | 139 | |
| 8070259c A |
140 | TrampolineEntry |
| 141 | TrampolineEntry | |
| 142 | // TrampolineEntry | |
| 143 | // TrampolineEntry | |
| 8972963c A |
144 | |
| 145 | .private_extern __a2a3_trampend | |
| 146 | __a2a3_trampend: | |
| 147 | ||
| 148 | #endif |