xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ppc_openbsd.S@b8a032363ba2 (annotated)
xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ppc_openbsd.S
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | // -*- Mode: Asm -*- |
| michael@0 | 2 | // |
| michael@0 | 3 | // This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | // License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | // file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| michael@0 | 6 | |
| michael@0 | 7 | .set r0,0; .set sp,1; .set RTOC,2; .set r3,3; .set r4,4 |
| michael@0 | 8 | .set r5,5; .set r6,6; .set r7,7; .set r8,8; .set r9,9 |
| michael@0 | 9 | .set r10,10; .set r11,11; .set r12,12; .set r13,13; .set r14,14 |
| michael@0 | 10 | .set r15,15; .set r16,16; .set r17,17; .set r18,18; .set r19,19 |
| michael@0 | 11 | .set r20,20; .set r21,21; .set r22,22; .set r23,23; .set r24,24 |
| michael@0 | 12 | .set r25,25; .set r26,26; .set r27,27; .set r28,28; .set r29,29 |
| michael@0 | 13 | .set r30,30; .set r31,31 |
| michael@0 | 14 | .set f0,0; .set f1,1; .set f2,2; .set f3,3; .set f4,4 |
| michael@0 | 15 | .set f5,5; .set f6,6; .set f7,7; .set f8,8; .set f9,9 |
| michael@0 | 16 | .set f10,10; .set f11,11; .set f12,12; .set f13,13; .set f14,14 |
| michael@0 | 17 | .set f15,15; .set f16,16; .set f17,17; .set f18,18; .set f19,19 |
| michael@0 | 18 | .set f20,20; .set f21,21; .set f22,22; .set f23,23; .set f24,24 |
| michael@0 | 19 | .set f25,25; .set f26,26; .set f27,27; .set f28,28; .set f29,29 |
| michael@0 | 20 | .set f30,30; .set f31,31 |
| michael@0 | 21 | |
| michael@0 | 22 | .section ".text" |
| michael@0 | 23 | .align 2 |
| michael@0 | 24 | .globl SharedStub |
| michael@0 | 25 | .type SharedStub,@function |
| michael@0 | 26 | |
| michael@0 | 27 | SharedStub: |
| michael@0 | 28 | stwu sp,-112(sp) // room for |
| michael@0 | 29 | // linkage (8), |
| michael@0 | 30 | // gprData (32), |
| michael@0 | 31 | // fprData (64), |
| michael@0 | 32 | // stack alignment(8) |
| michael@0 | 33 | mflr r0 |
| michael@0 | 34 | stw r0,116(sp) // save LR backchain |
| michael@0 | 35 | |
| michael@0 | 36 | stw r4,12(sp) // save GP registers |
| michael@0 | 37 | stw r5,16(sp) // (n.b. that we don't save r3 |
| michael@0 | 38 | stw r6,20(sp) // because PrepareAndDispatch() is savvy) |
| michael@0 | 39 | stw r7,24(sp) |
| michael@0 | 40 | stw r8,28(sp) |
| michael@0 | 41 | stw r9,32(sp) |
| michael@0 | 42 | stw r10,36(sp) |
| michael@0 | 43 | |
| michael@0 | 44 | stfd f1,40(sp) // save FP registers |
| michael@0 | 45 | stfd f2,48(sp) |
| michael@0 | 46 | stfd f3,56(sp) |
| michael@0 | 47 | stfd f4,64(sp) |
| michael@0 | 48 | stfd f5,72(sp) |
| michael@0 | 49 | stfd f6,80(sp) |
| michael@0 | 50 | stfd f7,88(sp) |
| michael@0 | 51 | stfd f8,96(sp) |
| michael@0 | 52 | |
| michael@0 | 53 | // r3 has the 'self' pointer already |
| michael@0 | 54 | |
| michael@0 | 55 | mr r4,r11 // r4 <= methodIndex selector, passed |
| michael@0 | 56 | // via r11 in the nsXPTCStubBase::StubXX() call |
| michael@0 | 57 | |
| michael@0 | 58 | addi r5,sp,120 // r5 <= pointer to callers args area, |
| michael@0 | 59 | // beyond r3-r10/f1-f8 mapped range |
| michael@0 | 60 | |
| michael@0 | 61 | addi r6,sp,8 // r6 <= gprData |
| michael@0 | 62 | addi r7,sp,40 // r7 <= fprData |
| michael@0 | 63 | |
| michael@0 | 64 | bl PrepareAndDispatch@local // Go! |
| michael@0 | 65 | |
| michael@0 | 66 | lwz r0,116(sp) // restore LR |
| michael@0 | 67 | mtlr r0 |
| michael@0 | 68 | la sp,112(sp) // clean up the stack |
| michael@0 | 69 | blr |
| michael@0 | 70 | |
| michael@0 | 71 | // Magic indicating no need for an executable stack |
| michael@0 | 72 | .section .note.GNU-stack, "", @progbits ; .previous |
