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 32NS_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#ifndef __NO_FPRS__ 55 addi r7,r6,32 // r7 <= fpregs ( == gpregs + 32 ) 56#else 57 li r7, 0 58#endif 59 60 bl invoke_copy_to_stack@local // (args, paramCount, params, gpregs, fpregs) 61#ifndef __NO_FPRS__ 62 lfd f1,32(r30) // load FP registers with method parameters 63 lfd f2,40(r30) 64 lfd f3,48(r30) 65 lfd f4,56(r30) 66 lfd f5,64(r30) 67 lfd f6,72(r30) 68 lfd f7,80(r30) 69 lfd f8,88(r30) 70#endif 71 lwz r3,8(r31) // r3 <= that 72 lwz r4,12(r31) // r4 <= methodIndex 73 lwz r5,0(r3) // r5 <= vtable ( == *that ) 74 slwi r4,r4,2 // convert to offset ( *= 4 ) 75 lwzx r0,r5,r4 // r0 <= methodpointer ( == vtable + offset ) 76 77 lwz r4,4(r30) // load GP regs with method parameters 78 lwz r5,8(r30) 79 lwz r6,12(r30) 80 lwz r7,16(r30) 81 lwz r8,20(r30) 82 lwz r9,24(r30) 83 lwz r10,28(r30) 84 85 mtlr r0 // copy methodpointer to LR 86 blrl // call method 87 88 lwz r30,16(r31) // restore r30 & r31 89 lwz r31,20(r31) 90 91 lwz r11,0(sp) // clean up the stack 92 lwz r0,4(r11) 93 mtlr r0 94 mr sp,r11 95 blr 96 97/* Magic indicating no need for an executable stack */ 98.section .note.GNU-stack, "", @progbits ; .previous 99