xpcom/reflect/xptcall/src/md/unix/xptcinvoke_ppc_netbsd.cpp@129ffea94266
xpcom/reflect/xptcall/src/md/unix/xptcinvoke_ppc_netbsd.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 // Platform specific code to invoke XPCOM methods on native objects
8 // The purpose of XPTC_InvokeByIndex() is to map a platform
9 // indepenpent call to the platform ABI. To do that,
10 // XPTC_InvokeByIndex() has to determine the method to call via vtable
11 // access. The parameters for the method are read from the
12 // nsXPTCVariant* and prepared for the native ABI. For the Linux/PPC
13 // ABI this means that the first 8 integral and floating point
14 // parameters are passed in registers.
16 #include "xptcprivate.h"
18 // 8 integral parameters are passed in registers
19 #define GPR_COUNT 8
21 // 8 floating point parameters are passed in registers, floats are
22 // promoted to doubles when passed in registers
23 #define FPR_COUNT 8
25 extern "C" uint32_t
26 invoke_count_words(uint32_t paramCount, nsXPTCVariant* s)
27 {
28 return uint32_t(((paramCount * 2) + 3) & ~3);
29 }
31 extern "C" void
32 invoke_copy_to_stack(uint32_t* d,
33 uint32_t paramCount,
34 nsXPTCVariant* s,
35 uint32_t* gpregs,
36 double* fpregs)
37 {
38 uint32_t gpr = 1; // skip one GP reg for 'that'
39 uint32_t fpr = 0;
40 uint32_t tempu32;
41 uint64_t tempu64;
43 for(uint32_t i = 0; i < paramCount; i++, s++) {
44 if(s->IsPtrData()) {
45 if(s->type == nsXPTType::T_JSVAL)
46 tempu32 = (uint32_t) &(s->ptr);
47 else
48 tempu32 = (uint32_t) s->ptr;
49 } else {
50 switch(s->type) {
51 case nsXPTType::T_FLOAT: break;
52 case nsXPTType::T_DOUBLE: break;
53 case nsXPTType::T_I8: tempu32 = s->val.i8; break;
54 case nsXPTType::T_I16: tempu32 = s->val.i16; break;
55 case nsXPTType::T_I32: tempu32 = s->val.i32; break;
56 case nsXPTType::T_I64: tempu64 = s->val.i64; break;
57 case nsXPTType::T_U8: tempu32 = s->val.u8; break;
58 case nsXPTType::T_U16: tempu32 = s->val.u16; break;
59 case nsXPTType::T_U32: tempu32 = s->val.u32; break;
60 case nsXPTType::T_U64: tempu64 = s->val.u64; break;
61 case nsXPTType::T_BOOL: tempu32 = s->val.b; break;
62 case nsXPTType::T_CHAR: tempu32 = s->val.c; break;
63 case nsXPTType::T_WCHAR: tempu32 = s->val.wc; break;
64 default: tempu32 = (uint32_t) s->val.p; break;
65 }
66 }
68 if (!s->IsPtrData() && s->type == nsXPTType::T_DOUBLE) {
69 if (fpr < FPR_COUNT)
70 fpregs[fpr++] = s->val.d;
71 else {
72 if ((uint32_t) d & 4) d++; // doubles are 8-byte aligned on stack
73 *((double*) d) = s->val.d;
74 d += 2;
75 if (gpr < GPR_COUNT)
76 gpr += 2;
77 }
78 }
79 else if (!s->IsPtrData() && s->type == nsXPTType::T_FLOAT) {
80 if (fpr < FPR_COUNT)
81 fpregs[fpr++] = s->val.f; // if passed in registers, floats are promoted to doubles
82 else {
83 *((float*) d) = s->val.f;
84 d += 1;
85 if (gpr < GPR_COUNT)
86 gpr += 1;
87 }
88 }
89 else if (!s->IsPtrData() && (s->type == nsXPTType::T_I64
90 || s->type == nsXPTType::T_U64)) {
91 if ((gpr + 1) < GPR_COUNT) {
92 if (gpr & 1) gpr++; // longlongs are aligned in odd/even register pairs, eg. r5/r6
93 *((uint64_t*) &gpregs[gpr]) = tempu64;
94 gpr += 2;
95 }
96 else {
97 if ((uint32_t) d & 4) d++; // longlongs are 8-byte aligned on stack
98 *((uint64_t*) d) = tempu64;
99 d += 2;
100 }
101 }
102 else {
103 if (gpr < GPR_COUNT)
104 gpregs[gpr++] = tempu32;
105 else
106 *d++ = tempu32;
107 }
109 }
110 }
112 extern "C"
113 XPTC_PUBLIC_API(nsresult)
114 XPTC_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
115 uint32_t paramCount, nsXPTCVariant* params);
