1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Implement shared vtbl methods. */
#include "xptcprivate.h"
#include "xptc_gcc_x86_unix.h"
extern "C" {
static nsresult ATTRIBUTE_USED
__attribute__ ((regparm (3)))
PrepareAndDispatch(uint32_t methodIndex, nsXPTCStubBase* self, uint32_t* args)
{
nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
const nsXPTMethodInfo* info;
uint8_t paramCount;
uint8_t i;
NS_ASSERTION(self,"no self");
self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info);
paramCount = info->GetParamCount();
const uint8_t indexOfJSContext = info->IndexOfJSContext();
uint32_t* ap = args;
for(i = 0; i < paramCount; i++, ap++)
{
const nsXPTParamInfo& param = info->GetParam(i);
const nsXPTType& type = param.GetType();
nsXPTCMiniVariant* dp = ¶mBuffer[i];
if (i == indexOfJSContext)
ap++;
if(param.IsOut() || !type.IsArithmetic())
{
dp->val.p = (void*) *ap;
continue;
}
// else
dp->val.p = (void*) *ap;
switch(type)
{
case nsXPTType::T_I64 : dp->val.i64 = *((int64_t*) ap); ap++; break;
case nsXPTType::T_U64 : dp->val.u64 = *((uint64_t*)ap); ap++; break;
case nsXPTType::T_DOUBLE : dp->val.d = *((double*) ap); ap++; break;
default : break;
}
}
nsresult result = self->mOuter->CallMethod((uint16_t)methodIndex, info,
paramBuffer);
return result;
}
} // extern "C"
#if !defined(XP_MACOSX)
#define STUB_HEADER(a, b) ".hidden " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev\n\t" \
".type " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev,@function\n"
#define STUB_SIZE(a, b) ".size " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev,.-" SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev\n\t"
#else
#define STUB_HEADER(a, b)
#define STUB_SIZE(a, b)
#endif
// gcc3 mangling tends to insert the length of the method name
#define STUB_ENTRY(n) \
asm(".text\n\t" \
".align 2\n\t" \
".if " #n " < 10\n\t" \
".globl " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase5Stub" #n "Ev\n\t" \
STUB_HEADER(5, n) \
SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase5Stub" #n "Ev:\n\t" \
".elseif " #n " < 100\n\t" \
".globl " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase6Stub" #n "Ev\n\t" \
STUB_HEADER(6, n) \
SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase6Stub" #n "Ev:\n\t" \
".elseif " #n " < 1000\n\t" \
".globl " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase7Stub" #n "Ev\n\t" \
STUB_HEADER(7, n) \
SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase7Stub" #n "Ev:\n\t" \
".else\n\t" \
".err \"stub number " #n " >= 1000 not yet supported\"\n\t" \
".endif\n\t" \
"movl $" #n ", %eax\n\t" \
"jmp " SYMBOL_UNDERSCORE "SharedStub\n\t" \
".if " #n " < 10\n\t" \
STUB_SIZE(5, n) \
".elseif " #n " < 100\n\t" \
STUB_SIZE(6, n) \
".else\n\t" \
STUB_SIZE(7, n) \
".endif");
// static nsresult SharedStub(uint32_t methodIndex) __attribute__((regparm(1)))
asm(".text\n\t"
".align 2\n\t"
#if !defined(XP_MACOSX)
".type " SYMBOL_UNDERSCORE "SharedStub,@function\n\t"
#endif
SYMBOL_UNDERSCORE "SharedStub:\n\t"
"leal 0x08(%esp), %ecx\n\t"
"movl 0x04(%esp), %edx\n\t"
"jmp " SYMBOL_UNDERSCORE "PrepareAndDispatch\n\t"
#if !defined(XP_MACOSX)
".size " SYMBOL_UNDERSCORE "SharedStub,.-" SYMBOL_UNDERSCORE "SharedStub"
#endif
);
#define SENTINEL_ENTRY(n) \
nsresult nsXPTCStubBase::Sentinel##n() \
{ \
NS_ERROR("nsXPTCStubBase::Sentinel called"); \
return NS_ERROR_NOT_IMPLEMENTED; \
}
#include "xptcstubsdef.inc"
void
xptc_dummy()
{
}
|
