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comparison: xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ppc_darwin.s.m4
xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ppc_darwin.s.m4
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| -1:000000000000 | 0:13a1180665b5 |
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| 1 /* -*- Mode: asm -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 .text | |
| 7 .globl _SharedStub | |
| 8 dnl | |
| 9 define(STUB_MANGLED_ENTRY, | |
| 10 ` .globl '$2` | |
| 11 .align 2 | |
| 12 '$2`: | |
| 13 addi r12, 0,'$1` | |
| 14 b _SharedStub') | |
| 15 dnl | |
| 16 define(STUB_ENTRY, | |
| 17 ` .if '$1` < 10 | |
| 18 STUB_MANGLED_ENTRY('$1`, `__ZN14nsXPTCStubBase5Stub'$1`Ev') | |
| 19 .elseif '$1` < 100 | |
| 20 STUB_MANGLED_ENTRY('$1`, `__ZN14nsXPTCStubBase6Stub'$1`Ev') | |
| 21 .elseif '$1` < 1000 | |
| 22 STUB_MANGLED_ENTRY('$1`, `__ZN14nsXPTCStubBase7Stub'$1`Ev') | |
| 23 .else | |
| 24 .err "Stub'$1` >= 1000 not yet supported." | |
| 25 .endif | |
| 26 ') | |
| 27 dnl | |
| 28 define(SENTINEL_ENTRY, `') | |
| 29 dnl | |
| 30 include(xptcstubsdef.inc) | |
| 31 dnl | |
| 32 // See also xptcstubs_ppc_rhapsody.cpp:PrepareAndDispatch. | |
| 33 _SharedStub: | |
| 34 // Prolog(ue) | |
| 35 mflr r0 // Save the link register in the caller's | |
| 36 stw r0, 8(r1) // stack frame | |
| 37 stwu r1,-176(r1) // Allocate stack space for our own frame and | |
| 38 // adjust stack pointer | |
| 39 | |
| 40 // Linkage area, 0(r1) to 24(r1) | |
| 41 // Original sp saved at 0(r1) | |
| 42 | |
| 43 // Parameter area, 20 bytes from 24(r1) to | |
| 44 // 44(r1) to accomodate 5 arguments passed | |
| 45 // to PrepareAndDispatch | |
| 46 | |
| 47 // Local variables, 132 bytes from 44(r1) | |
| 48 // to 176(r1), to accomodate 5 words and | |
| 49 // 13 doubles | |
| 50 | |
| 51 stw r4, 44(r1) // Save parameters passed in GPRs r4-r10; | |
| 52 stw r5, 48(r1) // a pointer to here will be passed to | |
| 53 stw r6, 52(r1) // PrepareAndDispatch for access to | |
| 54 stw r7, 56(r1) // arguments passed in registers. r3, | |
| 55 stw r8, 60(r1) // the self pointer, is used for the | |
| 56 stw r9, 64(r1) // call but isn't otherwise needed in | |
| 57 stw r10, 68(r1) // PrepareAndDispatch, so it is not saved. | |
| 58 | |
| 59 stfd f1, 72(r1) // Do the same for floating-point parameters | |
| 60 stfd f2, 80(r1) // passed in FPRs f1-f13 | |
| 61 stfd f3, 88(r1) | |
| 62 stfd f4, 96(r1) | |
| 63 stfd f5, 104(r1) | |
| 64 stfd f6, 112(r1) | |
| 65 stfd f7, 120(r1) | |
| 66 stfd f8, 128(r1) | |
| 67 stfd f9, 136(r1) | |
| 68 stfd f10, 144(r1) | |
| 69 stfd f11, 152(r1) | |
| 70 stfd f12, 160(r1) | |
| 71 stfd f13, 168(r1) | |
| 72 | |
| 73 // Set up parameters for call to | |
| 74 // PrepareAndDispatch. argument= | |
| 75 // 0, pointer to self, already in r3 | |
| 76 mr r4,r12 // 1, stub number | |
| 77 addi r5, r1, 204 // 2, pointer to the parameter area in our | |
| 78 // caller's stack, for access to | |
| 79 // parameters beyond those passed in | |
| 80 // registers. Skip past the first parameter | |
| 81 // (corresponding to r3) for the same reason | |
| 82 // as above. 176 (size of our frame) + 24 | |
| 83 // (size of caller's linkage) + 4 (skipped | |
| 84 // parameter) | |
| 85 addi r6, r1, 44 // 3, pointer to saved GPRs | |
| 86 addi r7, r1, 72 // 4, pointer to saved FPRs | |
| 87 | |
| 88 bl L_PrepareAndDispatch$stub | |
| 89 // Do it | |
| 90 nop // Leave room for linker magic | |
| 91 | |
| 92 // Epilog(ue) | |
| 93 lwz r0, 184(r1) // Retrieve old link register value | |
| 94 addi r1, r1, 176 // Restore stack pointer | |
| 95 mtlr r0 // Restore link register | |
| 96 blr // Return | |
| 97 | |
| 98 .picsymbol_stub | |
| 99 L_PrepareAndDispatch$stub: // Standard PIC symbol stub | |
| 100 .indirect_symbol _PrepareAndDispatch | |
| 101 mflr r0 | |
| 102 bcl 20,31,L1$pb | |
| 103 L1$pb: | |
| 104 mflr r11 | |
| 105 addis r11,r11,ha16(L1$lz-L1$pb) | |
| 106 mtlr r0 | |
| 107 lwz r12,lo16(L1$lz-L1$pb)(r11) | |
| 108 mtctr r12 | |
| 109 addi r11,r11,lo16(L1$lz-L1$pb) | |
| 110 bctr | |
| 111 .lazy_symbol_pointer | |
| 112 L1$lz: | |
| 113 .indirect_symbol _PrepareAndDispatch | |
| 114 .long dyld_stub_binding_helper |
