671 lines
19 KiB
C++
671 lines
19 KiB
C++
/*
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Copyright (c) 2014-2016 Intel Corporation. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "offload_table.h"
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#include "offload_common.h"
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// Offload Library versioning
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// We initialize version to OFFLOAD_VERSION_16
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// 15.0 application downgrades this to 1500 for MYO to use the older version.
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// 15.0 pragma works without needing version-specific code.
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// 16.0-U2 added a call from ofldbegin.cpp to set the version explicitly.
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// Pre-16.0-U2 application will find pre-initialized version number as 1600.
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// Post 16.0-U2 application will set its own version explicitly.
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int offload_version = OFFLOAD_VERSION_16;
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int offload_version_count = 0;
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#if !HOST_LIBRARY
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// Predefined offload entries
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extern void omp_set_num_threads_lrb(void*);
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extern void omp_get_max_threads_lrb(void*);
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extern void omp_get_num_procs_lrb(void*);
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extern void omp_set_dynamic_lrb(void*);
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extern void omp_get_dynamic_lrb(void*);
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extern void omp_set_nested_lrb(void*);
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extern void omp_get_nested_lrb(void*);
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extern void omp_set_schedule_lrb(void*);
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extern void omp_get_schedule_lrb(void*);
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extern void omp_init_lock_lrb(void*);
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extern void omp_destroy_lock_lrb(void*);
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extern void omp_set_lock_lrb(void*);
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extern void omp_unset_lock_lrb(void*);
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extern void omp_test_lock_lrb(void*);
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extern void omp_init_nest_lock_lrb(void*);
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extern void omp_destroy_nest_lock_lrb(void*);
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extern void omp_set_nest_lock_lrb(void*);
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extern void omp_unset_nest_lock_lrb(void*);
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extern void omp_test_nest_lock_lrb(void*);
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// OpenMP 4.5 APIs
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extern void omp_target_alloc_target(void*);
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extern void omp_target_free_target(void*);
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extern void omp_target_memcpy_target(void*);
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extern void omp_target_memcpy_rect_target(void*);
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// Predefined entries on the target side
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static FuncTable::Entry predefined_entries[] = {
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"omp_set_num_threads_target",
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(void*) &omp_set_num_threads_lrb,
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"omp_get_max_threads_target",
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(void*) &omp_get_max_threads_lrb,
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"omp_get_num_procs_target",
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(void*) &omp_get_num_procs_lrb,
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"omp_set_dynamic_target",
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(void*) &omp_set_dynamic_lrb,
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"omp_get_dynamic_target",
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(void*) &omp_get_dynamic_lrb,
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"omp_set_nested_target",
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(void*) &omp_set_nested_lrb,
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"omp_get_nested_target",
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(void*) &omp_get_nested_lrb,
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"omp_set_schedule_target",
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(void*) &omp_set_schedule_lrb,
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"omp_get_schedule_target",
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(void*) &omp_get_schedule_lrb,
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"omp_init_lock_target",
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(void*) &omp_init_lock_lrb,
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"omp_destroy_lock_target",
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(void*) &omp_destroy_lock_lrb,
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"omp_set_lock_target",
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(void*) &omp_set_lock_lrb,
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"omp_unset_lock_target",
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(void*) &omp_unset_lock_lrb,
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"omp_test_lock_target",
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(void*) &omp_test_lock_lrb,
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"omp_init_nest_lock_target",
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(void*) &omp_init_nest_lock_lrb,
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"omp_destroy_nest_lock_target",
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(void*) &omp_destroy_nest_lock_lrb,
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"omp_set_nest_lock_target",
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(void*) &omp_set_nest_lock_lrb,
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"omp_unset_nest_lock_target",
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(void*) &omp_unset_nest_lock_lrb,
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"omp_test_nest_lock_target",
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(void*) &omp_test_nest_lock_lrb,
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"omp_target_alloc_target",
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(void*) &omp_target_alloc_target,
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"omp_target_free_target",
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(void*) &omp_target_free_target,
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"omp_target_memcpy_target",
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(void*) &omp_target_memcpy_target,
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"omp_target_memcpy_rect_target",
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(void*) &omp_target_memcpy_rect_target,
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(const char*) -1,
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(void*) -1
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};
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static FuncList::Node predefined_table = {
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{ predefined_entries, -1 },
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0, 0
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};
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// Entry table
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FuncList __offload_entries(&predefined_table);
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#else
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FuncList __offload_entries;
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#endif // !HOST_LIBRARY
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extern "C" {
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// Set library version
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void __offload_set_version(int v)
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{
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offload_version_count++;
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if (offload_version_count == 1)
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{
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offload_version = v;
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}
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else
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{
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// Mix of versions is not supported
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if (v != offload_version)
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{
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LIBOFFLOAD_ERROR(c_mixed_versions);
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exit(1);
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}
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}
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}
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} // extern "C"
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// Function table. No predefined entries.
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FuncList __offload_funcs;
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// Var table
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VarList __offload_vars;
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// Given the function name returns the associtated function pointer
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const void* FuncList::find_addr(const char *name)
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{
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const void* func = 0;
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m_lock.lock();
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for (Node *n = m_head; n != 0; n = n->next) {
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for (const Table::Entry *e = n->table.entries;
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e->name != (const char*) -1; e++) {
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if (e->name != 0 && strcmp(e->name, name) == 0) {
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func = e->func;
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break;
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}
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}
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}
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m_lock.unlock();
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return func;
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}
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// Given the function pointer returns the associtated function name
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const char* FuncList::find_name(const void *func)
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{
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const char* name = 0;
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m_lock.lock();
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for (Node *n = m_head; n != 0; n = n->next) {
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for (const Table::Entry *e = n->table.entries;
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e->name != (const char*) -1; e++) {
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if (e->func == func) {
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name = e->name;
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break;
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}
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}
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}
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m_lock.unlock();
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return name;
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}
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// Returns max name length from all tables
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int64_t FuncList::max_name_length(void)
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{
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if (m_max_name_len < 0) {
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m_lock.lock();
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m_max_name_len = 0;
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for (Node *n = m_head; n != 0; n = n->next) {
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if (n->table.max_name_len < 0) {
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n->table.max_name_len = 0;
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// calculate max name length in a single table
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for (const Table::Entry *e = n->table.entries;
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e->name != (const char*) -1; e++) {
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if (e->name != 0) {
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size_t len = strlen(e->name) + 1;
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if (n->table.max_name_len < len) {
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n->table.max_name_len = len;
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}
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}
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}
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}
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// select max from all tables
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if (m_max_name_len < n->table.max_name_len) {
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m_max_name_len = n->table.max_name_len;
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}
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}
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m_lock.unlock();
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}
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return m_max_name_len;
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}
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// Debugging dump
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void FuncList::dump(void)
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{
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OFFLOAD_DEBUG_TRACE(2, "Function table:\n");
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m_lock.lock();
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for (Node *n = m_head; n != 0; n = n->next) {
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for (const Table::Entry *e = n->table.entries;
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e->name != (const char*) -1; e++) {
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if (e->name != 0) {
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OFFLOAD_DEBUG_TRACE(2, "%p %s\n", e->func, e->name);
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}
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}
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}
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m_lock.unlock();
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}
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// Debugging dump
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void VarList::dump(void)
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{
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OFFLOAD_DEBUG_TRACE(2, "Var table:\n");
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m_lock.lock();
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for (Node *n = m_head; n != 0; n = n->next) {
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for (const Table::Entry *e = n->table.entries;
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e->name != (const char*) -1; e++) {
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if (e->name != 0) {
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#if HOST_LIBRARY
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OFFLOAD_DEBUG_TRACE(2, "%s %p %ld\n", e->name, e->addr,
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e->size);
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#else // HOST_LIBRARY
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OFFLOAD_DEBUG_TRACE(2, "%s %p\n", e->name, e->addr);
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#endif // HOST_LIBRARY
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}
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}
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}
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m_lock.unlock();
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}
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//
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int64_t VarList::table_size(int64_t &nelems)
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{
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int64_t length = 0;
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nelems = 0;
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// calculate string table size and number of elements
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for (Node *n = m_head; n != 0; n = n->next) {
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for (const Table::Entry *e = n->table.entries;
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e->name != (const char*) -1; e++) {
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if (e->name != 0) {
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length += strlen(e->name) + 1;
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nelems++;
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}
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}
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}
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return nelems * sizeof(BufEntry) + length;
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}
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// copy table to the gven buffer
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void VarList::table_copy(void *buf, int64_t nelems)
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{
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BufEntry* elems = static_cast<BufEntry*>(buf);
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char* names = reinterpret_cast<char*>(elems + nelems);
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// copy entries to buffer
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for (Node *n = m_head; n != 0; n = n->next) {
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for (const Table::Entry *e = n->table.entries;
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e->name != (const char*) -1; e++) {
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if (e->name != 0) {
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// name field contains offset to the name from the beginning
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// of the buffer
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elems->name = names - static_cast<char*>(buf);
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elems->addr = reinterpret_cast<intptr_t>(e->addr);
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// copy name to string table
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const char *name = e->name;
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while ((*names++ = *name++) != '\0');
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elems++;
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}
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}
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}
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}
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// patch name offsets in a buffer
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void VarList::table_patch_names(void *buf, int64_t nelems)
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{
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BufEntry* elems = static_cast<BufEntry*>(buf);
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for (int i = 0; i < nelems; i++) {
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elems[i].name += reinterpret_cast<intptr_t>(buf);
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}
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}
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#if HOST_LIBRARY
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// 16.0 and earlier compilers used the following VarTable
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struct OldVarTable {
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const char* name;
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void* addr;
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// uint64_t var_alloc_type missing in 16.0 and earlier
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uint64_t size;
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};
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static void convert_OldVarTable_to_NewVarTable(VarList::Node *vt_start)
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{
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int table_size = 0;
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char * new_var_table;
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OldVarTable *old_var_table;
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OFFLOAD_DEBUG_TRACE(2,
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"Converting old var table to new var table to support backward compatiblity\n");
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// Calculate size of memory to be malloced
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old_var_table = (OldVarTable *) vt_start->table.entries;
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while (old_var_table->name != (const char*) -1) {
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table_size++;
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old_var_table++;
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}
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if (table_size != 0) {
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// Add 1 to table_size for end of table signature
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VarTable::Entry *new_var_table =
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new VarTable::Entry[table_size+1];
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if (new_var_table == NULL)
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LIBOFFLOAD_ERROR(c_malloc);
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old_var_table = (OldVarTable *) vt_start->table.entries;
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// Update VarList with new table
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vt_start->table.entries = new_var_table;
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// Fix up the new table value from old table
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for (int i=0; i< table_size; i++) {
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new_var_table->name = old_var_table->name;
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new_var_table->addr = old_var_table->addr;
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new_var_table->size = old_var_table->size;
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// Assign value of 0 for the missing field.
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// Implying it is neither IMPLICIT or LINK variable as
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// they were not supported in earlier compilers
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new_var_table->var_alloc_type = 0;
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old_var_table++;
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new_var_table++;
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}
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new_var_table->name = (const char *)-1;
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}
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}
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#endif //HOST_LIBRARY
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// Adds given list element to the global lookup table list
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extern "C" void __offload_register_tables(
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FuncList::Node *entry_table,
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FuncList::Node *func_table,
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VarList::Node *var_table
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)
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{
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OFFLOAD_DEBUG_TRACE(2, "Registering offload function entry table %p\n",
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entry_table);
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__offload_entries.add_table(entry_table);
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OFFLOAD_DEBUG_TRACE(2, "Registering function table %p\n", func_table);
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__offload_funcs.add_table(func_table);
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OFFLOAD_DEBUG_TRACE(2, "Registering var table %p\n", var_table);
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// Compiler earlier than 17.0 used a different var_table.
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// Convert the old table to new var_table format.
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// Only the host table for LINUX has changed.
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#ifndef TARGET_WINNT
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#if HOST_LIBRARY
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if (offload_version < OFFLOAD_VERSION_17) {
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convert_OldVarTable_to_NewVarTable(var_table);
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}
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#endif
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#endif
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__offload_vars.add_table(var_table);
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}
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// Removes given list element from the global lookup table list
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extern "C" void __offload_unregister_tables(
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FuncList::Node *entry_table,
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FuncList::Node *func_table,
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VarList::Node *var_table
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)
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{
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OFFLOAD_DEBUG_TRACE(2, "Unregistering offload function entry table %p\n",
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entry_table);
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__offload_entries.remove_table(entry_table);
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OFFLOAD_DEBUG_TRACE(2, "Unregistering function table %p\n", func_table);
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__offload_funcs.remove_table(func_table);
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OFFLOAD_DEBUG_TRACE(2, "Unregistering var table %p\n", var_table);
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#ifndef TARGET_WINNT
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#if HOST_LIBRARY
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if (offload_version < OFFLOAD_VERSION_17) {
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// Free the malloced var_table created for backward compatiblity
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delete var_table->table.entries;
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}
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#endif
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#endif
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__offload_vars.remove_table(var_table);
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}
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#ifdef MYO_SUPPORT
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MYOVarTableList __offload_myo_var_tables;
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MYOVarTableList __offload_myo_vtable_tables;
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MYOFuncTableList __offload_myo_func_tables;
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MYOInitTableList __offload_myo_init_tables;
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// Debugging dump
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void MYOVarTableList::dump(void)
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{
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OFFLOAD_DEBUG_TRACE(2, "MYO Var tables:\n");
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m_lock.lock();
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for (Node *n = m_head; n != 0; n = n->next) {
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OFFLOAD_DEBUG_TRACE(2, " MYO Var table:\n");
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for (const Table::Entry *e = n->table.entries;
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e->varName != MYO_TABLE_END_MARKER(); e++) {
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#ifdef TARGET_WINNT
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if (e->varName == 0) {
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continue;
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}
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#endif // TARGET_WINNT
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OFFLOAD_DEBUG_TRACE(2, " %s %p\n",
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e->varName, e->sharedAddr);
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}
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}
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m_lock.unlock();
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}
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// check if any shared variables
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bool MYOVarTableList::is_empty()
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{
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OFFLOAD_DEBUG_TRACE(3, "Are MYO Var tables empty?\n");
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m_lock.lock();
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for (Node *n = m_head; n != 0; n = n->next) {
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for (const Table::Entry *e = n->table.entries;
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e->varName != MYO_TABLE_END_MARKER(); e++) {
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#ifdef TARGET_WINNT
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if (e->varName == 0) {
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continue;
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}
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#endif // TARGET_WINNT
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m_lock.unlock();
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OFFLOAD_DEBUG_TRACE(3, "No\n");
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return false;
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}
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}
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m_lock.unlock();
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OFFLOAD_DEBUG_TRACE(3, "Yes\n");
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return true;
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}
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void MYOFuncTableList::dump(void)
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{
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OFFLOAD_DEBUG_TRACE(2, "MYO Func tables:\n");
|
|
|
|
m_lock.lock();
|
|
|
|
for (Node *n = m_head; n != 0; n = n->next) {
|
|
OFFLOAD_DEBUG_TRACE(2, " MYO Func table:\n");
|
|
for (const Table::Entry *e = n->table.entries;
|
|
e->funcName != MYO_TABLE_END_MARKER(); e++) {
|
|
#ifdef TARGET_WINNT
|
|
if (e->funcName == 0) {
|
|
continue;
|
|
}
|
|
#endif // TARGET_WINNT
|
|
#if HOST_LIBRARY
|
|
OFFLOAD_DEBUG_TRACE(2, " %s %p %p\n",
|
|
e->funcName, e->funcAddr, e->localThunkAddr);
|
|
#else // HOST_LIBRARY
|
|
OFFLOAD_DEBUG_TRACE(2, " %s %p %p %p\n",
|
|
e->funcName, e->funcAddr, e->wrapFuncAddr, e->localThunkAddr);
|
|
#endif // HOST_LIBRARY
|
|
}
|
|
}
|
|
|
|
m_lock.unlock();
|
|
}
|
|
|
|
// check if any shared functions
|
|
bool MYOFuncTableList::is_empty()
|
|
{
|
|
OFFLOAD_DEBUG_TRACE(3, "Are MYO Func tables empty?\n");
|
|
|
|
m_lock.lock();
|
|
|
|
for (Node *n = m_head; n != 0; n = n->next) {
|
|
int count = 0;
|
|
for (const Table::Entry *e = n->table.entries;
|
|
e->funcName != MYO_TABLE_END_MARKER(); e++) {
|
|
#ifdef TARGET_WINNT
|
|
if (e->funcName == 0) {
|
|
continue;
|
|
}
|
|
#endif // TARGET_WINNT
|
|
count++;
|
|
if (count > 1) {
|
|
m_lock.unlock();
|
|
OFFLOAD_DEBUG_TRACE(3, "No\n");
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
m_lock.unlock();
|
|
OFFLOAD_DEBUG_TRACE(3, "Yes\n");
|
|
return true;
|
|
}
|
|
|
|
void MYOInitTableList::dump(void)
|
|
{
|
|
OFFLOAD_DEBUG_TRACE(2, "MYO Init tables:\n");
|
|
|
|
m_lock.lock();
|
|
|
|
for (Node *n = m_head; n != 0; n = n->next) {
|
|
OFFLOAD_DEBUG_TRACE(2, " MYO Init table:\n");
|
|
for (const Table::Entry *e = n->table.entries;
|
|
#ifdef TARGET_WINNT
|
|
e->funcName != MYO_TABLE_END_MARKER(); e++) {
|
|
if (e->funcName == 0) {
|
|
continue;
|
|
}
|
|
OFFLOAD_DEBUG_TRACE(2, " %s %p\n", e->funcName, e->func);
|
|
#else // TARGET_WINNT
|
|
e->func != 0; e++) {
|
|
OFFLOAD_DEBUG_TRACE(2, " %p\n", e->func);
|
|
#endif // TARGET_WINNT
|
|
}
|
|
}
|
|
|
|
m_lock.unlock();
|
|
}
|
|
|
|
// check if any shared functions
|
|
bool MYOInitTableList::is_empty()
|
|
{
|
|
OFFLOAD_DEBUG_TRACE(3, "Are MYO Init tables empty?\n");
|
|
|
|
m_lock.lock();
|
|
|
|
for (Node *n = m_head; n != 0; n = n->next) {
|
|
for (const Table::Entry *e = n->table.entries;
|
|
#ifdef TARGET_WINNT
|
|
e->funcName != MYO_TABLE_END_MARKER(); e++) {
|
|
if (e->funcName == 0) {
|
|
continue;
|
|
}
|
|
m_lock.unlock();
|
|
OFFLOAD_DEBUG_TRACE(3, "No\n");
|
|
return false;
|
|
#else // TARGET_WINNT
|
|
e->func != 0; e++) {
|
|
#endif // TARGET_WINNT
|
|
}
|
|
}
|
|
|
|
m_lock.unlock();
|
|
OFFLOAD_DEBUG_TRACE(3, "Yes\n");
|
|
return true;
|
|
}
|
|
|
|
extern "C" void __offload_myoRegisterTables1(
|
|
MYOInitTableList::Node *init_table,
|
|
MYOVarTableList::Node *shared_table,
|
|
MYOVarTableList::Node *shared_vtable,
|
|
MYOFuncTableList::Node *fptr_table
|
|
)
|
|
{
|
|
OFFLOAD_DEBUG_TRACE(2, "Registering MYO shared var table %p\n",
|
|
shared_table);
|
|
__offload_myo_var_tables.add_table(shared_table);
|
|
|
|
OFFLOAD_DEBUG_TRACE(2, "Registering MYO shared vtable table %p\n",
|
|
shared_vtable);
|
|
__offload_myo_vtable_tables.add_table(shared_vtable);
|
|
|
|
OFFLOAD_DEBUG_TRACE(2, "Registering MYO function table %p\n", fptr_table);
|
|
__offload_myo_func_tables.add_table(fptr_table);
|
|
|
|
OFFLOAD_DEBUG_TRACE(2, "Registering MYO init table %p\n", init_table);
|
|
__offload_myo_init_tables.add_table(init_table);
|
|
}
|
|
|
|
extern "C" void __offload_myoRemoveTables(
|
|
MYOInitTableList::Node *init_table,
|
|
MYOVarTableList::Node *shared_table,
|
|
MYOVarTableList::Node *shared_vtable,
|
|
MYOFuncTableList::Node *fptr_table
|
|
)
|
|
{
|
|
OFFLOAD_DEBUG_TRACE(3, "%s\n", __func__);
|
|
|
|
OFFLOAD_DEBUG_TRACE(2, "Removing MYO shared var table %p\n",
|
|
shared_table);
|
|
__offload_myo_var_tables.remove_table(shared_table);
|
|
|
|
OFFLOAD_DEBUG_TRACE(2, "Removing MYO shared vtable table %p\n",
|
|
shared_vtable);
|
|
__offload_myo_vtable_tables.remove_table(shared_vtable);
|
|
|
|
OFFLOAD_DEBUG_TRACE(2, "Removing MYO function table %p\n", fptr_table);
|
|
__offload_myo_func_tables.remove_table(fptr_table);
|
|
|
|
OFFLOAD_DEBUG_TRACE(2, "Removing MYO init table %p\n", init_table);
|
|
__offload_myo_init_tables.remove_table(init_table);
|
|
}
|
|
|
|
#endif // MYO_SUPPORT
|