The Tor Browser: xpcom/reflect/xptcall/src/md/unix/xptcinvoke_x86

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  *

     3  * This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 /* Platform specific code to invoke XPCOM methods on native objects */

     9 #include "xptcprivate.h"

    11 extern "C" {

    13 // Remember that these 'words' are 32bit DWORDS

    15 uint32_t

    16 invoke_count_words(uint32_t paramCount, nsXPTCVariant* s)

    17 {

    18     uint32_t result = 0;

    19     for(uint32_t i = 0; i < paramCount; i++, s++)

    20     {

    21         if(s->IsPtrData())

    22         {

    23             result++;

    24             continue;

    25         }

    26         result++;

    27         switch(s->type)

    28         {

    29         case nsXPTType::T_I64    :

    30         case nsXPTType::T_U64    :

    31         case nsXPTType::T_DOUBLE :

    32             result++;

    33             break;

    34         }

    35     }

    36     return result;

    37 }

    39 void

    40 invoke_copy_to_stack(uint32_t paramCount, nsXPTCVariant* s, uint32_t* d)

    41 {

    42     for(uint32_t i = 0; i < paramCount; i++, d++, s++)

    43     {

    44         if(s->IsPtrData())

    45         {

    46             *((void**)d) = s->ptr;

    47             continue;

    48         }

    50 /* XXX: the following line is here (rather than as the default clause in

    51  *      the following switch statement) so that the Sun native compiler

    52  *      will generate the correct assembly code on the Solaris Intel

    53  *      platform. See the comments in bug #28817 for more details.

    54  */

    56         *((void**)d) = s->val.p;

    58         switch(s->type)

    59         {

    60         case nsXPTType::T_I64    : *((int64_t*) d) = s->val.i64; d++;    break;

    61         case nsXPTType::T_U64    : *((uint64_t*)d) = s->val.u64; d++;    break;

    62         case nsXPTType::T_DOUBLE : *((double*)  d) = s->val.d;   d++;    break;

    63         }

    64     }

    65 }

    67 }

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