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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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130
xpcom/reflect/xptcall/md/unix/xptcinvoke_linux_m68k.cpp Normal file
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Platform specific code to invoke XPCOM methods on native objects */
#include "xptcprivate.h"
// Remember that these 'words' are 32bit DWORDS
extern "C" {
static uint32_t
invoke_count_words(uint32_t paramCount, nsXPTCVariant* s)
{
uint32_t result = 0;
for(uint32_t i = 0; i < paramCount; i++, s++)
{
if(s->IsPtrData())
{
result++;
continue;
}
switch(s->type)
{
case nsXPTType::T_I8 :
case nsXPTType::T_I16 :
case nsXPTType::T_I32 :
result++;
break;
case nsXPTType::T_I64 :
result+=2;
break;
case nsXPTType::T_U8 :
case nsXPTType::T_U16 :
case nsXPTType::T_U32 :
result++;
break;
case nsXPTType::T_U64 :
result+=2;
break;
case nsXPTType::T_FLOAT :
result++;
break;
case nsXPTType::T_DOUBLE :
result+=2;
break;
case nsXPTType::T_BOOL :
case nsXPTType::T_CHAR :
case nsXPTType::T_WCHAR :
result++;
break;
default:
// all the others are plain pointer types
result++;
break;
}
}
return result;
}
void
invoke_copy_to_stack(uint32_t* d, uint32_t paramCount, nsXPTCVariant* s)
{
for(uint32_t i = 0; i < paramCount; i++, d++, s++)
{
if(s->IsPtrData())
{
*((void**)d) = s->ptr;
continue;
}
switch(s->type)
{
// 8 and 16 bit types should be promoted to 32 bits when copying
// onto the stack.
case nsXPTType::T_I8 : *((uint32_t*)d) = s->val.i8; break;
case nsXPTType::T_I16 : *((uint32_t*)d) = s->val.i16; break;
case nsXPTType::T_I32 : *((int32_t*) d) = s->val.i32; break;
case nsXPTType::T_I64 : *((int64_t*) d) = s->val.i64; d++; break;
case nsXPTType::T_U8 : *((uint32_t*)d) = s->val.u8; break;
case nsXPTType::T_U16 : *((uint32_t*)d) = s->val.u16; break;
case nsXPTType::T_U32 : *((uint32_t*)d) = s->val.u32; break;
case nsXPTType::T_U64 : *((uint64_t*)d) = s->val.u64; d++; break;
case nsXPTType::T_FLOAT : *((float*) d) = s->val.f; break;
case nsXPTType::T_DOUBLE : *((double*) d) = s->val.d; d++; break;
case nsXPTType::T_BOOL : *((uint32_t*)d) = s->val.b; break;
case nsXPTType::T_CHAR : *((uint32_t*)d) = s->val.c; break;
case nsXPTType::T_WCHAR : *((wchar_t*) d) = s->val.wc; break;
default:
// all the others are plain pointer types
*((void**)d) = s->val.p;
break;
}
}
}
}
EXPORT_XPCOM_API(nsresult)
NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
uint32_t paramCount, nsXPTCVariant* params)
{
uint32_t result, n;
n = invoke_count_words(paramCount, params) * 4;
__asm__ __volatile__(
"subl %5, %%sp\n\t" /* make room for params */
"movel %4, %%sp@-\n\t"
"movel %3, %%sp@-\n\t"
"pea %%sp@(8)\n\t"
"jbsr invoke_copy_to_stack\n\t" /* copy params */
"addw #12, %%sp\n\t"
"movel %1, %%sp@-\n\t"
"movel %1@, %%a0\n\t"
"movel %%a0@(%2:l:4), %%a0\n\t"
"jbsr %%a0@\n\t" /* safe to not cleanup sp */
"lea %%sp@(4,%5:l), %%sp\n\t"
"movel %%d0, %0"
: "=d" (result) /* %0 */
: "a" (that), /* %1 */
"d" (methodIndex), /* %2 */
"g" (paramCount), /* %3 */
"g" (params), /* %4 */
"d" (n) /* %5 */
: "a0", "a1", "d0", "d1", "memory"
);
return result;
}