xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc64_linux.cpp@129ffea94266
xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc64_linux.cpp
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
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/. */
6 // Implement shared vtbl methods.
8 #include "xptcprivate.h"
9 #include "xptiprivate.h"
11 // The Linux/PPC64 ABI passes the first 8 integral
12 // parameters and the first 13 floating point parameters in registers
13 // (r3-r10 and f1-f13), no stack space is allocated for these by the
14 // caller. The rest of the parameters are passed in the caller's stack
15 // area. The stack pointer has to retain 16-byte alignment.
17 // The PowerPC64 platform ABI can be found here:
18 // http://www.freestandards.org/spec/ELF/ppc64/
19 // and in particular:
20 // http://www.freestandards.org/spec/ELF/ppc64/PPC-elf64abi-1.9.html#FUNC-CALL
22 #define PARAM_BUFFER_COUNT 16
23 #define GPR_COUNT 7
24 #define FPR_COUNT 13
26 // PrepareAndDispatch() is called by SharedStub() and calls the actual method.
27 //
28 // - 'args[]' contains the arguments passed on stack
29 // - 'gprData[]' contains the arguments passed in integer registers
30 // - 'fprData[]' contains the arguments passed in floating point registers
31 //
32 // The parameters are mapped into an array of type 'nsXPTCMiniVariant'
33 // and then the method gets called.
34 #include <stdio.h>
35 extern "C" nsresult ATTRIBUTE_USED
36 PrepareAndDispatch(nsXPTCStubBase* self,
37 uint64_t methodIndex,
38 uint64_t* args,
39 uint64_t *gprData,
40 double *fprData)
41 {
42 nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
43 nsXPTCMiniVariant* dispatchParams = nullptr;
44 const nsXPTMethodInfo* info;
45 uint32_t paramCount;
46 uint32_t i;
47 nsresult result = NS_ERROR_FAILURE;
49 NS_ASSERTION(self,"no self");
51 self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info);
52 NS_ASSERTION(info,"no method info");
53 if (! info)
54 return NS_ERROR_UNEXPECTED;
56 paramCount = info->GetParamCount();
58 // setup variant array pointer
59 if(paramCount > PARAM_BUFFER_COUNT)
60 dispatchParams = new nsXPTCMiniVariant[paramCount];
61 else
62 dispatchParams = paramBuffer;
64 NS_ASSERTION(dispatchParams,"no place for params");
65 if (! dispatchParams)
66 return NS_ERROR_OUT_OF_MEMORY;
68 uint64_t* ap = args;
69 uint64_t tempu64;
71 for(i = 0; i < paramCount; i++) {
72 const nsXPTParamInfo& param = info->GetParam(i);
73 const nsXPTType& type = param.GetType();
74 nsXPTCMiniVariant* dp = &dispatchParams[i];
76 if (!param.IsOut() && type == nsXPTType::T_DOUBLE) {
77 if (i < FPR_COUNT)
78 dp->val.d = fprData[i];
79 else
80 dp->val.d = *(double*) ap;
81 } else if (!param.IsOut() && type == nsXPTType::T_FLOAT) {
82 if (i < FPR_COUNT)
83 dp->val.f = (float) fprData[i]; // in registers floats are passed as doubles
84 else {
85 float *p = (float *)ap;
86 #ifndef __LITTLE_ENDIAN__
87 p++;
88 #endif
89 dp->val.f = *p;
90 }
91 } else { /* integer type or pointer */
92 if (i < GPR_COUNT)
93 tempu64 = gprData[i];
94 else
95 tempu64 = *ap;
97 if (param.IsOut() || !type.IsArithmetic())
98 dp->val.p = (void*) tempu64;
99 else if (type == nsXPTType::T_I8)
100 dp->val.i8 = (int8_t) tempu64;
101 else if (type == nsXPTType::T_I16)
102 dp->val.i16 = (int16_t) tempu64;
103 else if (type == nsXPTType::T_I32)
104 dp->val.i32 = (int32_t) tempu64;
105 else if (type == nsXPTType::T_I64)
106 dp->val.i64 = (int64_t) tempu64;
107 else if (type == nsXPTType::T_U8)
108 dp->val.u8 = (uint8_t) tempu64;
109 else if (type == nsXPTType::T_U16)
110 dp->val.u16 = (uint16_t) tempu64;
111 else if (type == nsXPTType::T_U32)
112 dp->val.u32 = (uint32_t) tempu64;
113 else if (type == nsXPTType::T_U64)
114 dp->val.u64 = (uint64_t) tempu64;
115 else if (type == nsXPTType::T_BOOL)
116 dp->val.b = (bool) tempu64;
117 else if (type == nsXPTType::T_CHAR)
118 dp->val.c = (char) tempu64;
119 else if (type == nsXPTType::T_WCHAR)
120 dp->val.wc = (wchar_t) tempu64;
121 else
122 NS_ERROR("bad type");
123 }
125 if (i >= 7)
126 ap++;
127 }
129 result = self->mOuter->CallMethod((uint16_t) methodIndex, info,
130 dispatchParams);
132 if (dispatchParams != paramBuffer)
133 delete [] dispatchParams;
135 return result;
136 }
138 // Load r11 with the constant 'n' and branch to SharedStub().
139 //
140 // XXX Yes, it's ugly that we're relying on gcc's name-mangling here;
141 // however, it's quick, dirty, and'll break when the ABI changes on
142 // us, which is what we want ;-).
145 // gcc-3 version
146 //
147 // As G++3 ABI contains the length of the functionname in the mangled
148 // name, it is difficult to get a generic assembler mechanism like
149 // in the G++ 2.95 case.
150 // Create names would be like:
151 // _ZN14nsXPTCStubBase5Stub1Ev
152 // _ZN14nsXPTCStubBase6Stub12Ev
153 // _ZN14nsXPTCStubBase7Stub123Ev
154 // _ZN14nsXPTCStubBase8Stub1234Ev
155 // etc.
156 // Use assembler directives to get the names right...
158 #if _CALL_ELF == 2
159 # define STUB_ENTRY(n) \
160 __asm__ ( \
161 ".section \".text\" \n\t" \
162 ".align 2 \n\t" \
163 ".if "#n" < 10 \n\t" \
164 ".globl _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \
165 ".type _ZN14nsXPTCStubBase5Stub"#n"Ev,@function \n\n" \
166 "_ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t" \
167 "0: addis 2,12,.TOC.-0b@ha \n\t" \
168 "addi 2,2,.TOC.-0b@l \n\t" \
169 ".localentry _ZN14nsXPTCStubBase5Stub"#n"Ev,.-_ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \
170 \
171 ".elseif "#n" < 100 \n\t" \
172 ".globl _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \
173 ".type _ZN14nsXPTCStubBase6Stub"#n"Ev,@function \n\n" \
174 "_ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t" \
175 "0: addis 2,12,.TOC.-0b@ha \n\t" \
176 "addi 2,2,.TOC.-0b@l \n\t" \
177 ".localentry _ZN14nsXPTCStubBase6Stub"#n"Ev,.-_ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \
178 \
179 ".elseif "#n" < 1000 \n\t" \
180 ".globl _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \
181 ".type _ZN14nsXPTCStubBase7Stub"#n"Ev,@function \n\n" \
182 "_ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t" \
183 "0: addis 2,12,.TOC.-0b@ha \n\t" \
184 "addi 2,2,.TOC.-0b@l \n\t" \
185 ".localentry _ZN14nsXPTCStubBase7Stub"#n"Ev,.-_ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \
186 \
187 ".else \n\t" \
188 ".err \"stub number "#n" >= 1000 not yet supported\"\n" \
189 ".endif \n\t" \
190 \
191 "li 11,"#n" \n\t" \
192 "b SharedStub \n" \
193 );
194 #else
195 # define STUB_ENTRY(n) \
196 __asm__ ( \
197 ".section \".toc\",\"aw\" \n\t" \
198 ".section \".text\" \n\t" \
199 ".align 2 \n\t" \
200 ".if "#n" < 10 \n\t" \
201 ".globl _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \
202 ".section \".opd\",\"aw\" \n\t" \
203 ".align 3 \n\t" \
204 "_ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t" \
205 ".quad ._ZN14nsXPTCStubBase5Stub"#n"Ev,.TOC.@tocbase \n\t" \
206 ".previous \n\t" \
207 ".type _ZN14nsXPTCStubBase5Stub"#n"Ev,@function \n\n" \
208 "._ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t" \
209 \
210 ".elseif "#n" < 100 \n\t" \
211 ".globl _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \
212 ".section \".opd\",\"aw\" \n\t" \
213 ".align 3 \n\t" \
214 "_ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t" \
215 ".quad ._ZN14nsXPTCStubBase6Stub"#n"Ev,.TOC.@tocbase \n\t" \
216 ".previous \n\t" \
217 ".type _ZN14nsXPTCStubBase6Stub"#n"Ev,@function \n\n" \
218 "._ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t" \
219 \
220 ".elseif "#n" < 1000 \n\t" \
221 ".globl _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \
222 ".section \".opd\",\"aw\" \n\t" \
223 ".align 3 \n\t" \
224 "_ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t" \
225 ".quad ._ZN14nsXPTCStubBase7Stub"#n"Ev,.TOC.@tocbase \n\t" \
226 ".previous \n\t" \
227 ".type _ZN14nsXPTCStubBase7Stub"#n"Ev,@function \n\n" \
228 "._ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t" \
229 \
230 ".else \n\t" \
231 ".err \"stub number "#n" >= 1000 not yet supported\"\n" \
232 ".endif \n\t" \
233 \
234 "li 11,"#n" \n\t" \
235 "b SharedStub \n" \
236 );
237 #endif
239 #define SENTINEL_ENTRY(n) \
240 nsresult nsXPTCStubBase::Sentinel##n() \
241 { \
242 NS_ERROR("nsXPTCStubBase::Sentinel called"); \
243 return NS_ERROR_NOT_IMPLEMENTED; \
244 }
246 #include "xptcstubsdef.inc"
