337 lines
10 KiB
C++
337 lines
10 KiB
C++
/*
|
|
Copyright (c) 2014-2016 Intel Corporation. All Rights Reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
* Neither the name of Intel Corporation nor the names of its
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
#if HOST_LIBRARY
|
|
#include "offload_table.h"
|
|
#ifdef MYO_SUPPORT
|
|
#include "offload_myo_host.h"
|
|
#endif // MYO_SUPPORT
|
|
#else
|
|
#include "compiler_if_target.h"
|
|
#include "offload_target.h"
|
|
#ifdef MYO_SUPPORT
|
|
#include "offload_myo_target.h"
|
|
#endif // MYO_SUPPORT
|
|
#endif // HOST_LIBRARY
|
|
|
|
// Initializes library and registers specified offload image.
|
|
// Don't use this declarations from offload_host.h as offload_table.h
|
|
// is used instead of it. Using offload_host.h contradicts with
|
|
// STL library compiled with VS2010.
|
|
extern "C" bool __offload_register_image(const void* image);
|
|
extern "C" void __offload_unregister_image(const void* image);
|
|
extern "C" bool __offload_target_image_is_executable(const void *image);
|
|
|
|
#ifdef TARGET_WINNT
|
|
#define ALLOCATE(name) __declspec(allocate(name))
|
|
#define DLL_LOCAL
|
|
#else // TARGET_WINNT
|
|
#define ALLOCATE(name) __attribute__((section(name)))
|
|
#define DLL_LOCAL __attribute__((visibility("hidden")))
|
|
#endif // TARGET_WINNT
|
|
|
|
#if HOST_LIBRARY
|
|
// the host program/shared library should always have __offload_target_image
|
|
// symbol defined. This symbol specifies the beginning of the target program
|
|
// image.
|
|
extern "C" DLL_LOCAL const void* __offload_target_image;
|
|
#else // HOST_LIBRARY
|
|
// Define a weak main which would be used on target side in case usere's
|
|
// source file containing main does not have offload code.
|
|
#pragma weak main
|
|
int main(void)
|
|
{
|
|
OFFLOAD_TARGET_MAIN();
|
|
return 0;
|
|
}
|
|
|
|
#pragma weak MAIN__
|
|
extern "C" int MAIN__(void)
|
|
{
|
|
OFFLOAD_TARGET_MAIN();
|
|
return 0;
|
|
}
|
|
#endif // HOST_LIBRARY
|
|
|
|
// offload section prolog
|
|
ALLOCATE(OFFLOAD_ENTRY_TABLE_SECTION_START)
|
|
#ifdef TARGET_WINNT
|
|
__declspec(align(sizeof(FuncTable::Entry)))
|
|
#endif // TARGET_WINNT
|
|
static FuncTable::Entry __offload_entry_table_start = { 0 };
|
|
|
|
// list element for the current module
|
|
static FuncList::Node __offload_entry_node = {
|
|
{ &__offload_entry_table_start + 1, -1 },
|
|
0, 0
|
|
};
|
|
|
|
// offload fp section prolog
|
|
ALLOCATE(OFFLOAD_FUNC_TABLE_SECTION_START)
|
|
#ifdef TARGET_WINNT
|
|
__declspec(align(sizeof(FuncTable::Entry)))
|
|
#endif // TARGET_WINNT
|
|
static FuncTable::Entry __offload_func_table_start = { 0 };
|
|
|
|
// list element for the current module
|
|
static FuncList::Node __offload_func_node = {
|
|
{ &__offload_func_table_start + 1, -1 },
|
|
0, 0
|
|
};
|
|
|
|
// offload fp section prolog
|
|
ALLOCATE(OFFLOAD_VAR_TABLE_SECTION_START)
|
|
#ifdef TARGET_WINNT
|
|
__declspec(align(sizeof(VarTable::Entry)))
|
|
#endif // TARGET_WINNT
|
|
static VarTable::Entry __offload_var_table_start = { 0 };
|
|
|
|
// list element for the current module
|
|
static VarList::Node __offload_var_node = {
|
|
{ &__offload_var_table_start + 1 },
|
|
0, 0
|
|
};
|
|
|
|
#ifdef MYO_SUPPORT
|
|
|
|
// offload myo shared var section prolog
|
|
// first element is empty
|
|
ALLOCATE(OFFLOAD_MYO_SHARED_TABLE_SECTION_START)
|
|
#ifdef TARGET_WINNT
|
|
__declspec(align(sizeof(SharedTableEntry)))
|
|
#endif // TARGET_WINNT
|
|
static MYOVarTable::Entry __offload_myo_shared_var_start = { 0 };
|
|
|
|
// list element for the current module
|
|
// table entry pointer skips the empty first entry
|
|
static MYOVarTableList::Node __offload_myo_shared_var_node = {
|
|
{ &__offload_myo_shared_var_start + 1 },
|
|
0, 0
|
|
};
|
|
|
|
// offload myo shared vtable section prolog
|
|
// first element is empty
|
|
ALLOCATE(OFFLOAD_MYO_SHARED_VTABLE_SECTION_START)
|
|
#ifdef TARGET_WINNT
|
|
__declspec(align(sizeof(SharedTableEntry)))
|
|
#endif // TARGET_WINNT
|
|
static MYOVarTable::Entry __offload_myo_shared_vtable_start = { 0 };
|
|
|
|
// list element for the current module
|
|
// table entry pointer skips the empty first entry
|
|
static MYOVarTableList::Node __offload_myo_shared_vtable_node = {
|
|
{ &__offload_myo_shared_vtable_start + 1 },
|
|
0, 0
|
|
};
|
|
|
|
// offload myo shared var init section prolog
|
|
// first element is empty
|
|
ALLOCATE(OFFLOAD_MYO_SHARED_INIT_TABLE_SECTION_START)
|
|
#ifdef TARGET_WINNT
|
|
__declspec(align(sizeof(InitTableEntry)))
|
|
#endif // TARGET_WINNT
|
|
static MYOInitTable::Entry __offload_myo_init_table_start = { 0 };
|
|
|
|
// list element for the current module
|
|
// table entry pointer skips the empty first entry
|
|
static MYOInitTableList::Node __offload_myo_init_table_node = {
|
|
{ &__offload_myo_init_table_start + 1 },
|
|
0, 0
|
|
};
|
|
|
|
// The functions and variables needed for a built-in
|
|
// remote function entry for vtable initialization on MIC
|
|
|
|
#if !HOST_LIBRARY
|
|
MyoError __offload_init_vtables(void)
|
|
{
|
|
SharedTableEntry *t_start;
|
|
|
|
//OFFLOAD_DEBUG_TRACE(3, "%s\n", __func__);
|
|
t_start = &__offload_myo_shared_vtable_start + 1;
|
|
//OFFLOAD_DEBUG_TRACE(3, "%s(%p)\n", __func__, t_start);
|
|
while (t_start->varName != 0) {
|
|
//OFFLOAD_DEBUG_TRACE(4,
|
|
// "myo shared vtable \"%s\" &myo_ptr = %p myo_ptr = %p\n",
|
|
// t_start->varName,
|
|
// (void *)(t_start->sharedAddr),
|
|
// ((void **)(t_start->sharedAddr))[0]);
|
|
t_start++;
|
|
}
|
|
|
|
__offload_myo_shared_init_table_process(
|
|
&__offload_myo_init_table_start + 1);
|
|
return MYO_SUCCESS;
|
|
}
|
|
#endif // !HOST_LIBRARY
|
|
|
|
static void vtable_initializer()
|
|
{
|
|
}
|
|
|
|
#if !HOST_LIBRARY
|
|
static MyoError vtable_initializer_wrapper()
|
|
{
|
|
__offload_myoAcquire();
|
|
__offload_init_vtables();
|
|
__offload_myoRelease();
|
|
return MYO_SUCCESS;
|
|
}
|
|
#endif
|
|
|
|
static void* __offload_vtable_initializer_thunk_ptr = 0;
|
|
|
|
// offload myo fptr section prolog
|
|
// first element is pre-initialized to the MIC vtable initializer
|
|
ALLOCATE(OFFLOAD_MYO_FPTR_TABLE_SECTION_START)
|
|
#ifdef TARGET_WINNT
|
|
__declspec(align(sizeof(FptrTableEntry)))
|
|
#endif // TARGET_WINNT
|
|
static MYOFuncTable::Entry __offload_myo_fptr_table_start = {
|
|
#if HOST_LIBRARY
|
|
"--vtable_initializer--",
|
|
(void*)&vtable_initializer,
|
|
(void*)&__offload_vtable_initializer_thunk_ptr,
|
|
#ifdef TARGET_WINNT
|
|
// Dummy to pad up to 32 bytes
|
|
0
|
|
#endif // TARGET_WINNT
|
|
#else // HOST_LIBRARY
|
|
"--vtable_initializer--",
|
|
(void*)&vtable_initializer,
|
|
(void*)&vtable_initializer_wrapper,
|
|
&__offload_vtable_initializer_thunk_ptr,
|
|
#endif // HOST_LIBRARY
|
|
};
|
|
|
|
// list element for the current module
|
|
static MYOFuncTableList::Node __offload_myo_fptr_table_node = {
|
|
{ &__offload_myo_fptr_table_start },
|
|
0, 0
|
|
};
|
|
|
|
#endif // MYO_SUPPORT
|
|
|
|
// init/fini code which adds/removes local lookup data to/from the global list
|
|
|
|
static void offload_fini();
|
|
static void offload_fini_so();
|
|
|
|
#ifndef TARGET_WINNT
|
|
static void offload_init() __attribute__((constructor(101)));
|
|
#else // TARGET_WINNT
|
|
static void offload_init();
|
|
|
|
// Place offload initialization before user constructors
|
|
ALLOCATE(OFFLOAD_CRTINIT_SECTION_START)
|
|
static void (*addressof_offload_init)() = offload_init;
|
|
#endif // TARGET_WINNT
|
|
|
|
static void offload_init()
|
|
{
|
|
bool success;
|
|
|
|
// Set offload version
|
|
__offload_set_version(OFFLOAD_VERSION_17);
|
|
|
|
// register offload tables
|
|
__offload_register_tables(&__offload_entry_node,
|
|
&__offload_func_node,
|
|
&__offload_var_node);
|
|
|
|
#if HOST_LIBRARY
|
|
success = __offload_register_image(&__offload_target_image);
|
|
if (!success)
|
|
{
|
|
return;
|
|
}
|
|
#endif // HOST_LIBRARY
|
|
#ifdef MYO_SUPPORT
|
|
#if HOST_LIBRARY
|
|
// If this was the main program register main atexit routine
|
|
if (__offload_myoProcessTables(
|
|
&__offload_target_image,
|
|
&__offload_myo_init_table_node,
|
|
&__offload_myo_shared_var_node,
|
|
&__offload_myo_shared_vtable_node,
|
|
&__offload_myo_fptr_table_node))
|
|
{
|
|
atexit(offload_fini);
|
|
#ifdef TARGET_WINNT
|
|
} else {
|
|
atexit(offload_fini_so);
|
|
#endif
|
|
}
|
|
#else // HOST_LIBRARY
|
|
__offload_myoProcessTables(
|
|
&__offload_myo_init_table_start + 1,
|
|
&__offload_myo_shared_var_start + 1,
|
|
&__offload_myo_shared_vtable_start + 1,
|
|
&__offload_myo_fptr_table_start
|
|
);
|
|
#endif // HOST_LIBRARY
|
|
#endif // MYO_SUPPORT
|
|
}
|
|
|
|
#ifndef TARGET_WINNT
|
|
static void offload_fini_so() __attribute__((destructor(101)));
|
|
#endif // TARGET_WINNT
|
|
|
|
static void offload_fini()
|
|
{
|
|
#if HOST_LIBRARY
|
|
__offload_unregister_image(&__offload_target_image);
|
|
#endif // HOST_LIBRARY
|
|
}
|
|
|
|
static void offload_fini_so()
|
|
{
|
|
// Offload and MYO tables need to be removed from list
|
|
// to prevent invalid accesses after dlclose
|
|
// Remove offload tables
|
|
__offload_unregister_tables(&__offload_entry_node,
|
|
&__offload_func_node,
|
|
&__offload_var_node);
|
|
#if HOST_LIBRARY
|
|
if(!__offload_target_image_is_executable(&__offload_target_image)) {
|
|
__offload_unregister_image(&__offload_target_image);
|
|
}
|
|
#endif
|
|
#ifdef MYO_SUPPORT
|
|
#if HOST_LIBRARY
|
|
// Remove MYO tables
|
|
__offload_myoRemoveTables(
|
|
&__offload_myo_init_table_node,
|
|
&__offload_myo_shared_var_node,
|
|
&__offload_myo_shared_vtable_node,
|
|
&__offload_myo_fptr_table_node);
|
|
#endif // HOST_LIBRARY
|
|
#endif // MYO_SUPPORT
|
|
}
|