xpcom/reflect/xptcall/src/md/unix/xptcstubs_aarch64.cpp@129ffea94266
xpcom/reflect/xptcall/src/md/unix/xptcstubs_aarch64.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 #include "xptcprivate.h"
7 #include "xptiprivate.h"
9 #ifndef __AARCH64EL__
10 #error "Only little endian compatibility was tested"
11 #endif
13 /*
14 * This is for AArch64 ABI
15 *
16 * When we're called, the "gp" registers are stored in gprData and
17 * the "fp" registers are stored in fprData. Each array has 8 regs
18 * but first reg in gprData is a placeholder for 'self'.
19 */
20 extern "C" nsresult
21 PrepareAndDispatch(nsXPTCStubBase* self, uint32_t methodIndex, uint64_t* args,
22 uint64_t *gprData, double *fprData)
23 {
24 #define PARAM_BUFFER_COUNT 16
25 #define PARAM_GPR_COUNT 8
26 #define PARAM_FPR_COUNT 8
28 nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
29 nsXPTCMiniVariant* dispatchParams = NULL;
30 const nsXPTMethodInfo* info;
31 nsresult result = NS_ERROR_FAILURE;
33 NS_ASSERTION(self,"no self");
35 self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info);
36 NS_ASSERTION(info,"no method info");
38 uint32_t paramCount = info->GetParamCount();
40 // setup variant array pointer
41 if (paramCount > PARAM_BUFFER_COUNT) {
42 dispatchParams = new nsXPTCMiniVariant[paramCount];
43 } else {
44 dispatchParams = paramBuffer;
45 }
46 NS_ASSERTION(dispatchParams,"no place for params");
48 uint64_t* ap = args;
49 uint32_t next_gpr = 1; // skip first arg which is 'self'
50 uint32_t next_fpr = 0;
51 for (uint32_t i = 0; i < paramCount; i++) {
52 const nsXPTParamInfo& param = info->GetParam(i);
53 const nsXPTType& type = param.GetType();
54 nsXPTCMiniVariant* dp = &dispatchParams[i];
56 if (param.IsOut() || !type.IsArithmetic()) {
57 if (next_gpr < PARAM_GPR_COUNT) {
58 dp->val.p = (void*)gprData[next_gpr++];
59 } else {
60 dp->val.p = (void*)*ap++;
61 }
62 continue;
63 }
65 switch (type) {
66 case nsXPTType::T_I8:
67 if (next_gpr < PARAM_GPR_COUNT) {
68 dp->val.i8 = (int8_t)gprData[next_gpr++];
69 } else {
70 dp->val.i8 = (int8_t)*ap++;
71 }
72 break;
74 case nsXPTType::T_I16:
75 if (next_gpr < PARAM_GPR_COUNT) {
76 dp->val.i16 = (int16_t)gprData[next_gpr++];
77 } else {
78 dp->val.i16 = (int16_t)*ap++;
79 }
80 break;
82 case nsXPTType::T_I32:
83 if (next_gpr < PARAM_GPR_COUNT) {
84 dp->val.i32 = (int32_t)gprData[next_gpr++];
85 } else {
86 dp->val.i32 = (int32_t)*ap++;
87 }
88 break;
90 case nsXPTType::T_I64:
91 if (next_gpr < PARAM_GPR_COUNT) {
92 dp->val.i64 = (int64_t)gprData[next_gpr++];
93 } else {
94 dp->val.i64 = (int64_t)*ap++;
95 }
96 break;
98 case nsXPTType::T_U8:
99 if (next_gpr < PARAM_GPR_COUNT) {
100 dp->val.u8 = (uint8_t)gprData[next_gpr++];
101 } else {
102 dp->val.u8 = (uint8_t)*ap++;
103 }
104 break;
106 case nsXPTType::T_U16:
107 if (next_gpr < PARAM_GPR_COUNT) {
108 dp->val.u16 = (uint16_t)gprData[next_gpr++];
109 } else {
110 dp->val.u16 = (uint16_t)*ap++;
111 }
112 break;
114 case nsXPTType::T_U32:
115 if (next_gpr < PARAM_GPR_COUNT) {
116 dp->val.u32 = (uint32_t)gprData[next_gpr++];
117 } else {
118 dp->val.u32 = (uint32_t)*ap++;
119 }
120 break;
122 case nsXPTType::T_U64:
123 if (next_gpr < PARAM_GPR_COUNT) {
124 dp->val.u64 = (uint64_t)gprData[next_gpr++];
125 } else {
126 dp->val.u64 = (uint64_t)*ap++;
127 }
128 break;
130 case nsXPTType::T_FLOAT:
131 if (next_fpr < PARAM_FPR_COUNT) {
132 memcpy(&dp->val.f, &fprData[next_fpr++], sizeof(dp->val.f));
133 } else {
134 memcpy(&dp->val.f, ap++, sizeof(dp->val.f));
135 }
136 break;
138 case nsXPTType::T_DOUBLE:
139 if (next_fpr < PARAM_FPR_COUNT) {
140 memcpy(&dp->val.d, &fprData[next_fpr++], sizeof(dp->val.d));
141 } else {
142 memcpy(&dp->val.d, ap++, sizeof(dp->val.d));
143 }
144 break;
146 case nsXPTType::T_BOOL:
147 if (next_gpr < PARAM_GPR_COUNT) {
148 dp->val.b = (bool)gprData[next_gpr++];
149 } else {
150 dp->val.b = (bool)*ap++;
151 }
152 break;
154 case nsXPTType::T_CHAR:
155 if (next_gpr < PARAM_GPR_COUNT) {
156 dp->val.c = (char)gprData[next_gpr++];
157 } else {
158 dp->val.c = (char)*ap++;
159 }
160 break;
162 case nsXPTType::T_WCHAR:
163 if (next_gpr < PARAM_GPR_COUNT) {
164 dp->val.wc = (wchar_t)gprData[next_gpr++];
165 } else {
166 dp->val.wc = (wchar_t)*ap++;
167 }
168 break;
170 default:
171 NS_ASSERTION(0, "bad type");
172 break;
173 }
174 }
176 result = self->mOuter->CallMethod((uint16_t)methodIndex, info, dispatchParams);
178 if (dispatchParams != paramBuffer) {
179 delete [] dispatchParams;
180 }
182 return result;
183 }
185 // Load w17 with the constant 'n' and branch to SharedStub().
186 # define STUB_ENTRY(n) \
187 __asm__ ( \
188 ".section \".text\" \n\t" \
189 ".align 2\n\t" \
190 ".if "#n" < 10 \n\t" \
191 ".globl _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \
192 ".hidden _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \
193 ".type _ZN14nsXPTCStubBase5Stub"#n"Ev,@function \n\n" \
194 "_ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t" \
195 ".elseif "#n" < 100 \n\t" \
196 ".globl _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \
197 ".hidden _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \
198 ".type _ZN14nsXPTCStubBase6Stub"#n"Ev,@function \n\n" \
199 "_ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t" \
200 ".elseif "#n" < 1000 \n\t" \
201 ".globl _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \
202 ".hidden _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \
203 ".type _ZN14nsXPTCStubBase7Stub"#n"Ev,@function \n\n" \
204 "_ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t" \
205 ".else \n\t" \
206 ".err \"stub number "#n" >= 1000 not yet supported\"\n" \
207 ".endif \n\t" \
208 "mov w17,#"#n" \n\t" \
209 "b SharedStub \n" \
210 );
212 #define SENTINEL_ENTRY(n) \
213 nsresult nsXPTCStubBase::Sentinel##n() \
214 { \
215 NS_ASSERTION(0,"nsXPTCStubBase::Sentinel called"); \
216 return NS_ERROR_NOT_IMPLEMENTED; \
217 }
219 #include "xptcstubsdef.inc"
