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comparison: xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_sparc64_openbsd.s
xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_sparc64_openbsd.s
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:d7b97823c195 |
|---|---|
| 1 /* -*- Mode: asm; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 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 /* | |
| 8 Platform specific code to invoke XPCOM methods on native objects | |
| 9 for sparcv9 Solaris. | |
| 10 | |
| 11 See the SPARC Compliance Definition (SCD) Chapter 3 | |
| 12 for more information about what is going on here, including | |
| 13 the use of BIAS (0x7ff). | |
| 14 The SCD is available from http://www.sparc.com/. | |
| 15 */ | |
| 16 | |
| 17 .global NS_InvokeByIndex | |
| 18 .type NS_InvokeByIndex, #function | |
| 19 | |
| 20 /* | |
| 21 NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex, | |
| 22 uint32_t paramCount, nsXPTCVariant* params); | |
| 23 | |
| 24 */ | |
| 25 NS_InvokeByIndex: | |
| 26 save %sp,-(128 + 64),%sp ! room for the register window and | |
| 27 ! struct pointer, rounded up to 0 % 64 | |
| 28 sll %i2,4,%l0 ! assume the worst case | |
| 29 ! paramCount * 2 * 8 bytes | |
| 30 cmp %l0, 0 ! are there any args? If not, | |
| 31 be .invoke ! no need to copy args to stack | |
| 32 nop | |
| 33 | |
| 34 sub %sp,%l0,%sp ! create the additional stack space | |
| 35 add %sp,0x7ff+136,%o0 ! step past the register window, the | |
| 36 ! struct result pointer and the 'this' slot | |
| 37 mov %i2,%o1 ! paramCount | |
| 38 call invoke_copy_to_stack | |
| 39 mov %i3,%o2 ! params | |
| 40 | |
| 41 ! | |
| 42 ! load arguments from stack into the outgoing registers | |
| 43 ! BIAS is 0x7ff (2047) | |
| 44 ! | |
| 45 | |
| 46 ! load the %o1..5 64bit (extended word) output registers registers | |
| 47 ldx [%sp + 0x7ff + 136],%o1 ! %i1 | |
| 48 ldx [%sp + 0x7ff + 144],%o2 ! %i2 | |
| 49 ldx [%sp + 0x7ff + 152],%o3 ! %i3 | |
| 50 ldx [%sp + 0x7ff + 160],%o4 ! %i4 | |
| 51 ldx [%sp + 0x7ff + 168],%o5 ! %i5 | |
| 52 | |
| 53 ! load the even number double registers starting with %f2 | |
| 54 ldd [%sp + 0x7ff + 136],%f2 | |
| 55 ldd [%sp + 0x7ff + 144],%f4 | |
| 56 ldd [%sp + 0x7ff + 152],%f6 | |
| 57 ldd [%sp + 0x7ff + 160],%f8 | |
| 58 ldd [%sp + 0x7ff + 168],%f10 | |
| 59 ldd [%sp + 0x7ff + 176],%f12 | |
| 60 ldd [%sp + 0x7ff + 184],%f14 | |
| 61 ldd [%sp + 0x7ff + 192],%f16 | |
| 62 ldd [%sp + 0x7ff + 200],%f18 | |
| 63 ldd [%sp + 0x7ff + 208],%f20 | |
| 64 ldd [%sp + 0x7ff + 216],%f22 | |
| 65 ldd [%sp + 0x7ff + 224],%f24 | |
| 66 ldd [%sp + 0x7ff + 232],%f26 | |
| 67 ldd [%sp + 0x7ff + 240],%f28 | |
| 68 ldd [%sp + 0x7ff + 248],%f30 | |
| 69 | |
| 70 ! | |
| 71 ! calculate the target address from the vtable | |
| 72 ! | |
| 73 .invoke: | |
| 74 sll %i1,3,%l0 ! index *= 8 | |
| 75 ! add %l0,16,%l0 ! there are 2 extra entries in the vTable (16bytes) | |
| 76 ldx [%i0],%l1 ! *that --> address of vtable | |
| 77 ldx [%l0 + %l1],%l0 ! that->vtable[index * 8 + 16] --> address | |
| 78 | |
| 79 jmpl %l0,%o7 ! call the routine | |
| 80 mov %i0,%o0 ! move 'this' pointer to out register | |
| 81 | |
| 82 mov %o0,%i0 ! propagate return value | |
| 83 ret | |
| 84 restore | |
| 85 | |
| 86 .size NS_InvokeByIndex, .-NS_InvokeByIndex |
