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comparison: xpcom/reflect/xptcall/src/md/unix/xptcstubs_gcc_x86_unix.cpp
xpcom/reflect/xptcall/src/md/unix/xptcstubs_gcc_x86_unix.cpp
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| -1:000000000000 | 0:09a358b63af8 |
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| 1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 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 /* Implement shared vtbl methods. */ | |
| 7 | |
| 8 #include "xptcprivate.h" | |
| 9 #include "xptiprivate.h" | |
| 10 #include "xptc_gcc_x86_unix.h" | |
| 11 | |
| 12 extern "C" { | |
| 13 static nsresult ATTRIBUTE_USED | |
| 14 __attribute__ ((regparm (3))) | |
| 15 PrepareAndDispatch(uint32_t methodIndex, nsXPTCStubBase* self, uint32_t* args) | |
| 16 { | |
| 17 #define PARAM_BUFFER_COUNT 16 | |
| 18 | |
| 19 nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT]; | |
| 20 nsXPTCMiniVariant* dispatchParams = nullptr; | |
| 21 const nsXPTMethodInfo* info; | |
| 22 uint8_t paramCount; | |
| 23 uint8_t i; | |
| 24 nsresult result = NS_ERROR_FAILURE; | |
| 25 | |
| 26 NS_ASSERTION(self,"no self"); | |
| 27 | |
| 28 self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info); | |
| 29 paramCount = info->GetParamCount(); | |
| 30 | |
| 31 // setup variant array pointer | |
| 32 if(paramCount > PARAM_BUFFER_COUNT) | |
| 33 dispatchParams = new nsXPTCMiniVariant[paramCount]; | |
| 34 else | |
| 35 dispatchParams = paramBuffer; | |
| 36 NS_ASSERTION(dispatchParams,"no place for params"); | |
| 37 | |
| 38 uint32_t* ap = args; | |
| 39 for(i = 0; i < paramCount; i++, ap++) | |
| 40 { | |
| 41 const nsXPTParamInfo& param = info->GetParam(i); | |
| 42 const nsXPTType& type = param.GetType(); | |
| 43 nsXPTCMiniVariant* dp = &dispatchParams[i]; | |
| 44 | |
| 45 if(param.IsOut() || !type.IsArithmetic()) | |
| 46 { | |
| 47 dp->val.p = (void*) *ap; | |
| 48 continue; | |
| 49 } | |
| 50 // else | |
| 51 dp->val.p = (void*) *ap; | |
| 52 switch(type) | |
| 53 { | |
| 54 case nsXPTType::T_I64 : dp->val.i64 = *((int64_t*) ap); ap++; break; | |
| 55 case nsXPTType::T_U64 : dp->val.u64 = *((uint64_t*)ap); ap++; break; | |
| 56 case nsXPTType::T_DOUBLE : dp->val.d = *((double*) ap); ap++; break; | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 result = self->mOuter->CallMethod((uint16_t)methodIndex, info, dispatchParams); | |
| 61 | |
| 62 if(dispatchParams != paramBuffer) | |
| 63 delete [] dispatchParams; | |
| 64 | |
| 65 return result; | |
| 66 } | |
| 67 } // extern "C" | |
| 68 | |
| 69 #if !defined(XP_MACOSX) | |
| 70 | |
| 71 #define STUB_HEADER(a, b) ".hidden " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev\n\t" \ | |
| 72 ".type " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev,@function\n" | |
| 73 | |
| 74 #define STUB_SIZE(a, b) ".size " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev,.-" SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev\n\t" | |
| 75 | |
| 76 #else | |
| 77 | |
| 78 #define STUB_HEADER(a, b) | |
| 79 #define STUB_SIZE(a, b) | |
| 80 | |
| 81 #endif | |
| 82 | |
| 83 // gcc3 mangling tends to insert the length of the method name | |
| 84 #define STUB_ENTRY(n) \ | |
| 85 asm(".text\n\t" \ | |
| 86 ".align 2\n\t" \ | |
| 87 ".if " #n " < 10\n\t" \ | |
| 88 ".globl " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase5Stub" #n "Ev\n\t" \ | |
| 89 STUB_HEADER(5, n) \ | |
| 90 SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase5Stub" #n "Ev:\n\t" \ | |
| 91 ".elseif " #n " < 100\n\t" \ | |
| 92 ".globl " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase6Stub" #n "Ev\n\t" \ | |
| 93 STUB_HEADER(6, n) \ | |
| 94 SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase6Stub" #n "Ev:\n\t" \ | |
| 95 ".elseif " #n " < 1000\n\t" \ | |
| 96 ".globl " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase7Stub" #n "Ev\n\t" \ | |
| 97 STUB_HEADER(7, n) \ | |
| 98 SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase7Stub" #n "Ev:\n\t" \ | |
| 99 ".else\n\t" \ | |
| 100 ".err \"stub number " #n " >= 1000 not yet supported\"\n\t" \ | |
| 101 ".endif\n\t" \ | |
| 102 "movl $" #n ", %eax\n\t" \ | |
| 103 "jmp " SYMBOL_UNDERSCORE "SharedStub\n\t" \ | |
| 104 ".if " #n " < 10\n\t" \ | |
| 105 STUB_SIZE(5, n) \ | |
| 106 ".elseif " #n " < 100\n\t" \ | |
| 107 STUB_SIZE(6, n) \ | |
| 108 ".else\n\t" \ | |
| 109 STUB_SIZE(7, n) \ | |
| 110 ".endif"); | |
| 111 | |
| 112 // static nsresult SharedStub(uint32_t methodIndex) __attribute__((regparm(1))) | |
| 113 asm(".text\n\t" | |
| 114 ".align 2\n\t" | |
| 115 #if !defined(XP_MACOSX) | |
| 116 ".type " SYMBOL_UNDERSCORE "SharedStub,@function\n\t" | |
| 117 #endif | |
| 118 SYMBOL_UNDERSCORE "SharedStub:\n\t" | |
| 119 "leal 0x08(%esp), %ecx\n\t" | |
| 120 "movl 0x04(%esp), %edx\n\t" | |
| 121 "jmp " SYMBOL_UNDERSCORE "PrepareAndDispatch\n\t" | |
| 122 #if !defined(XP_MACOSX) | |
| 123 ".size " SYMBOL_UNDERSCORE "SharedStub,.-" SYMBOL_UNDERSCORE "SharedStub" | |
| 124 #endif | |
| 125 ); | |
| 126 | |
| 127 #define SENTINEL_ENTRY(n) \ | |
| 128 nsresult nsXPTCStubBase::Sentinel##n() \ | |
| 129 { \ | |
| 130 NS_ERROR("nsXPTCStubBase::Sentinel called"); \ | |
| 131 return NS_ERROR_NOT_IMPLEMENTED; \ | |
| 132 } | |
| 133 | |
| 134 #include "xptcstubsdef.inc" | |
| 135 | |
| 136 void | |
| 137 xptc_dummy() | |
| 138 { | |
| 139 } |
