xpcom/reflect/xptcall/src/md/unix/xptcinvoke_ppc64_linux.cpp@129ffea94266
xpcom/reflect/xptcall/src/md/unix/xptcinvoke_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 // Platform specific code to invoke XPCOM methods on native objects
8 // The purpose of NS_InvokeByIndex() is to map a platform
9 // independent call to the platform ABI. To do that,
10 // NS_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.
14 // The PowerPC64 platform ABI can be found here:
15 // http://www.freestandards.org/spec/ELF/ppc64/
16 // and in particular:
17 // http://www.freestandards.org/spec/ELF/ppc64/PPC-elf64abi-1.9.html#FUNC-CALL
19 #include <stdio.h>
20 #include "xptcprivate.h"
22 // 8 integral parameters are passed in registers, not including 'that'
23 #define GPR_COUNT 7
25 // 8 floating point parameters are passed in registers, floats are
26 // promoted to doubles when passed in registers
27 #define FPR_COUNT 13
29 extern "C" uint32_t
30 invoke_count_words(uint32_t paramCount, nsXPTCVariant* s)
31 {
32 return uint32_t(((paramCount * 2) + 3) & ~3);
33 }
35 extern "C" void
36 invoke_copy_to_stack(uint64_t* gpregs,
37 double* fpregs,
38 uint32_t paramCount,
39 nsXPTCVariant* s,
40 uint64_t* d)
41 {
42 uint64_t tempu64;
44 for(uint32_t i = 0; i < paramCount; i++, s++) {
45 if(s->IsPtrData())
46 tempu64 = (uint64_t) s->ptr;
47 else {
48 switch(s->type) {
49 case nsXPTType::T_FLOAT: break;
50 case nsXPTType::T_DOUBLE: break;
51 case nsXPTType::T_I8: tempu64 = s->val.i8; break;
52 case nsXPTType::T_I16: tempu64 = s->val.i16; break;
53 case nsXPTType::T_I32: tempu64 = s->val.i32; break;
54 case nsXPTType::T_I64: tempu64 = s->val.i64; break;
55 case nsXPTType::T_U8: tempu64 = s->val.u8; break;
56 case nsXPTType::T_U16: tempu64 = s->val.u16; break;
57 case nsXPTType::T_U32: tempu64 = s->val.u32; break;
58 case nsXPTType::T_U64: tempu64 = s->val.u64; break;
59 case nsXPTType::T_BOOL: tempu64 = s->val.b; break;
60 case nsXPTType::T_CHAR: tempu64 = s->val.c; break;
61 case nsXPTType::T_WCHAR: tempu64 = s->val.wc; break;
62 default: tempu64 = (uint64_t) s->val.p; break;
63 }
64 }
66 if (!s->IsPtrData() && s->type == nsXPTType::T_DOUBLE) {
67 if (i < FPR_COUNT)
68 fpregs[i] = s->val.d;
69 else
70 *(double *)d = s->val.d;
71 }
72 else if (!s->IsPtrData() && s->type == nsXPTType::T_FLOAT) {
73 if (i < FPR_COUNT) {
74 fpregs[i] = s->val.f; // if passed in registers, floats are promoted to doubles
75 } else {
76 float *p = (float *)d;
77 #ifndef __LITTLE_ENDIAN__
78 p++;
79 #endif
80 *p = s->val.f;
81 }
82 }
83 else {
84 if (i < GPR_COUNT)
85 gpregs[i] = tempu64;
86 else
87 *d = tempu64;
88 }
89 if (i >= 7)
90 d++;
91 }
92 }
94 EXPORT_XPCOM_API(nsresult)
95 NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
96 uint32_t paramCount, nsXPTCVariant* params);
