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comparison: xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_ppc_openbsd.S
xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_ppc_openbsd.S
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| 1 // -*- Mode: Asm -*- | |
| 2 // | |
| 3 // This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 // License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 // file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 6 | |
| 7 .set r0,0; .set sp,1; .set RTOC,2; .set r3,3; .set r4,4 | |
| 8 .set r5,5; .set r6,6; .set r7,7; .set r8,8; .set r9,9 | |
| 9 .set r10,10; .set r11,11; .set r12,12; .set r13,13; .set r14,14 | |
| 10 .set r15,15; .set r16,16; .set r17,17; .set r18,18; .set r19,19 | |
| 11 .set r20,20; .set r21,21; .set r22,22; .set r23,23; .set r24,24 | |
| 12 .set r25,25; .set r26,26; .set r27,27; .set r28,28; .set r29,29 | |
| 13 .set r30,30; .set r31,31 | |
| 14 .set f0,0; .set f1,1; .set f2,2; .set f3,3; .set f4,4 | |
| 15 .set f5,5; .set f6,6; .set f7,7; .set f8,8; .set f9,9 | |
| 16 .set f10,10; .set f11,11; .set f12,12; .set f13,13; .set f14,14 | |
| 17 .set f15,15; .set f16,16; .set f17,17; .set f18,18; .set f19,19 | |
| 18 .set f20,20; .set f21,21; .set f22,22; .set f23,23; .set f24,24 | |
| 19 .set f25,25; .set f26,26; .set f27,27; .set f28,28; .set f29,29 | |
| 20 .set f30,30; .set f31,31 | |
| 21 | |
| 22 .section ".text" | |
| 23 .align 2 | |
| 24 .globl NS_InvokeByIndex | |
| 25 .type NS_InvokeByIndex,@function | |
| 26 | |
| 27 // | |
| 28 // NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex, | |
| 29 // uint32_t paramCount, nsXPTCVariant* params) | |
| 30 // | |
| 31 | |
| 32 NS_InvokeByIndex: | |
| 33 stwu sp,-32(sp) // setup standard stack frame | |
| 34 mflr r0 // save LR | |
| 35 stw r3,8(sp) // r3 <= that | |
| 36 stw r4,12(sp) // r4 <= methodIndex | |
| 37 stw r30,16(sp) | |
| 38 stw r31,20(sp) | |
| 39 | |
| 40 stw r0,36(sp) // store LR backchain | |
| 41 mr r31,sp | |
| 42 | |
| 43 rlwinm r10,r5,3,0,27 // r10 = (ParamCount * 2 * 4) & ~0x0f | |
| 44 addi r0,r10,96 // reserve stack for GPR and FPR register save area r0 = r10 + 96 | |
| 45 lwz r9,0(sp) // r9 = backchain | |
| 46 neg r0,r0 | |
| 47 stwux r9,sp,r0 // reserve stack space and save SP backchain | |
| 48 | |
| 49 addi r3,sp,8 // r3 <= args | |
| 50 mr r4,r5 // r4 <= paramCount | |
| 51 mr r5,r6 // r5 <= params | |
| 52 add r6,r3,r10 // r6 <= gpregs ( == args + r10 ) | |
| 53 mr r30,r6 // store in r30 for use later... | |
| 54 addi r7,r6,32 // r7 <= fpregs ( == gpregs + 32 ) | |
| 55 | |
| 56 bl invoke_copy_to_stack@local // (args, paramCount, params, gpregs, fpregs) | |
| 57 | |
| 58 lfd f1,32(r30) // load FP registers with method parameters | |
| 59 lfd f2,40(r30) | |
| 60 lfd f3,48(r30) | |
| 61 lfd f4,56(r30) | |
| 62 lfd f5,64(r30) | |
| 63 lfd f6,72(r30) | |
| 64 lfd f7,80(r30) | |
| 65 lfd f8,88(r30) | |
| 66 | |
| 67 lwz r3,8(r31) // r3 <= that | |
| 68 lwz r4,12(r31) // r4 <= methodIndex | |
| 69 lwz r5,0(r3) // r5 <= vtable ( == *that ) | |
| 70 slwi r4,r4,2 // convert to offset ( *= 4 ) | |
| 71 lwzx r0,r5,r4 // r0 <= methodpointer ( == vtable + offset ) | |
| 72 | |
| 73 lwz r4,4(r30) // load GP regs with method parameters | |
| 74 lwz r5,8(r30) | |
| 75 lwz r6,12(r30) | |
| 76 lwz r7,16(r30) | |
| 77 lwz r8,20(r30) | |
| 78 lwz r9,24(r30) | |
| 79 lwz r10,28(r30) | |
| 80 | |
| 81 mtlr r0 // copy methodpointer to LR | |
| 82 blrl // call method | |
| 83 | |
| 84 lwz r30,16(r31) // restore r30 & r31 | |
| 85 lwz r31,20(r31) | |
| 86 | |
| 87 lwz r11,0(sp) // clean up the stack | |
| 88 lwz r0,4(r11) | |
| 89 mtlr r0 | |
| 90 mr sp,r11 | |
| 91 blr | |
| 92 | |
| 93 // Magic indicating no need for an executable stack | |
| 94 .section .note.GNU-stack, "", @progbits ; .previous |
