The Tor Browser: xpcom/reflect/xptcall/src/md/unix/xptcstubs_gcc_x86

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"

    10 #include "xptc_gcc_x86_unix.h"

    12 extern "C" {

    13 static nsresult ATTRIBUTE_USED

    14 __attribute__ ((regparm (3)))

    15 PrepareAndDispatch(uint32_t methodIndex, nsXPTCStubBase* self, uint32_t* args)

    16 {

    17 #define PARAM_BUFFER_COUNT     16

    19     nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];

    20     nsXPTCMiniVariant* dispatchParams = nullptr;

    21     const nsXPTMethodInfo* info;

    22     uint8_t paramCount;

    23     uint8_t i;

    24     nsresult result = NS_ERROR_FAILURE;

    26     NS_ASSERTION(self,"no self");

    28     self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info);

    29     paramCount = info->GetParamCount();

    31     // setup variant array pointer

    32     if(paramCount > PARAM_BUFFER_COUNT)

    33         dispatchParams = new nsXPTCMiniVariant[paramCount];

    34     else

    35         dispatchParams = paramBuffer;

    36     NS_ASSERTION(dispatchParams,"no place for params");

    38     uint32_t* ap = args;

    39     for(i = 0; i < paramCount; i++, ap++)

    40     {

    41         const nsXPTParamInfo& param = info->GetParam(i);

    42         const nsXPTType& type = param.GetType();

    43         nsXPTCMiniVariant* dp = &dispatchParams[i];

    45         if(param.IsOut() || !type.IsArithmetic())

    46         {

    47             dp->val.p = (void*) *ap;

    48             continue;

    49         }

    50         // else

    51 	    dp->val.p = (void*) *ap;

    52         switch(type)

    53         {

    54         case nsXPTType::T_I64    : dp->val.i64 = *((int64_t*) ap); ap++; break;

    55         case nsXPTType::T_U64    : dp->val.u64 = *((uint64_t*)ap); ap++; break;

    56         case nsXPTType::T_DOUBLE : dp->val.d   = *((double*)  ap); ap++; break;

    57         }

    58     }

    60     result = self->mOuter->CallMethod((uint16_t)methodIndex, info, dispatchParams);

    62     if(dispatchParams != paramBuffer)

    63         delete [] dispatchParams;

    65     return result;

    66 }

    67 } // extern "C"

    69 #if !defined(XP_MACOSX)

    71 #define STUB_HEADER(a, b) ".hidden " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev\n\t" \

    72                           ".type   " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev,@function\n"

    74 #define STUB_SIZE(a, b)  ".size        " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev,.-" SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev\n\t"

    76 #else

    78 #define STUB_HEADER(a, b)

    79 #define STUB_SIZE(a, b)

    81 #endif

    83 // gcc3 mangling tends to insert the length of the method name

    84 #define STUB_ENTRY(n) \

    85 asm(".text\n\t" \

    86     ".align	2\n\t" \

    87     ".if	" #n " < 10\n\t" \

    88     ".globl	" SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase5Stub" #n "Ev\n\t" \

    89     STUB_HEADER(5, n)                                                   \

    90     SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase5Stub" #n "Ev:\n\t" \

    91     ".elseif	" #n " < 100\n\t" \

    92     ".globl	" SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase6Stub" #n "Ev\n\t" \

    93     STUB_HEADER(6, n)                                                   \

    94     SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase6Stub" #n "Ev:\n\t" \

    95     ".elseif    " #n " < 1000\n\t" \

    96     ".globl     " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase7Stub" #n "Ev\n\t" \

    97     STUB_HEADER(7, n)                                                   \

    98     SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase7Stub" #n "Ev:\n\t" \

    99     ".else\n\t" \

   100     ".err	\"stub number " #n " >= 1000 not yet supported\"\n\t" \

   101     ".endif\n\t" \

   102     "movl	$" #n ", %eax\n\t" \

   103     "jmp	" SYMBOL_UNDERSCORE "SharedStub\n\t" \

   104     ".if	" #n " < 10\n\t" \

   105     STUB_SIZE(5, n) \

   106     ".elseif	" #n " < 100\n\t" \

   107     STUB_SIZE(6, n) \

   108     ".else\n\t" \

   109     STUB_SIZE(7, n) \

   110     ".endif");

   112 // static nsresult SharedStub(uint32_t methodIndex) __attribute__((regparm(1)))

   113 asm(".text\n\t"

   114     ".align	2\n\t"

   115 #if !defined(XP_MACOSX)

   116     ".type	" SYMBOL_UNDERSCORE "SharedStub,@function\n\t"

   117 #endif

   118     SYMBOL_UNDERSCORE "SharedStub:\n\t"

   119     "leal	0x08(%esp), %ecx\n\t"

   120     "movl	0x04(%esp), %edx\n\t"

   121     "jmp	" SYMBOL_UNDERSCORE "PrepareAndDispatch\n\t"

   122 #if !defined(XP_MACOSX)

   123     ".size	" SYMBOL_UNDERSCORE "SharedStub,.-" SYMBOL_UNDERSCORE "SharedStub"

   124 #endif

   125 );

   127 #define SENTINEL_ENTRY(n) \

   128 nsresult nsXPTCStubBase::Sentinel##n() \

   129 { \

   130     NS_ERROR("nsXPTCStubBase::Sentinel called"); \

   131     return NS_ERROR_NOT_IMPLEMENTED; \

   132 }

   134 #include "xptcstubsdef.inc"

   136 void

   137 xptc_dummy()

   138 {

   139 }

The Tor Browser / file revision

xpcom/reflect/xptcall/src/md/unix/xptcstubs_gcc_x86_unix.cpp@129ffea94266

xpcom/reflect/xptcall/src/md/unix/xptcstubs_gcc_x86_unix.cpp