diff options
| author | Tobias Burnus <tobias@codesourcery.com> | 2022-09-09 17:43:12 +0200 |
|---|---|---|
| committer | Tobias Burnus <tobias@codesourcery.com> | 2022-09-09 17:43:12 +0200 |
| commit | dfd75bf7e9017e92b59be650fca97d2b4b331a82 (patch) | |
| tree | 3a49bcda089c75c1ef6c5a2cdf1d49cd18b4ed0a /libgomp/plugin | |
| parent | 0fcc0cf9dca9f11acbbc94c9437759bdfbd297f2 (diff) | |
GCN: libgomp+mkoffload.cc: Prepare for reverse offload fn lookup
Add support to GCN for reverse lookup of function name to prepare for
'omp target device(ancestor:1)'.
gcc/ChangeLog:
* config/gcn/mkoffload.cc (process_asm): Create .offload_func_table,
similar to pre-existing .offload_var_table.
libgomp/ChangeLog:
* plugin/plugin-gcn.c (GOMP_OFFLOAD_load_image): Read
.offload_func_table to populate rev_fn_table when requested.
Diffstat (limited to 'libgomp/plugin')
| -rw-r--r-- | libgomp/plugin/plugin-gcn.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/libgomp/plugin/plugin-gcn.c b/libgomp/plugin/plugin-gcn.c index 6c77f896f88..04b122f2a09 100644 --- a/libgomp/plugin/plugin-gcn.c +++ b/libgomp/plugin/plugin-gcn.c @@ -3353,7 +3353,7 @@ GOMP_OFFLOAD_init_device (int n) int GOMP_OFFLOAD_load_image (int ord, unsigned version, const void *target_data, struct addr_pair **target_table, - uint64_t **rev_fn_table __attribute__((unused))) + uint64_t **rev_fn_table) { if (GOMP_VERSION_DEV (version) != GOMP_VERSION_GCN) { @@ -3525,6 +3525,30 @@ GOMP_OFFLOAD_load_image (int ord, unsigned version, const void *target_data, if (module->fini_array_func) kernel_count--; + if (rev_fn_table != NULL && kernel_count == 0) + *rev_fn_table = NULL; + else if (rev_fn_table != NULL) + { + hsa_status_t status; + hsa_executable_symbol_t var_symbol; + status = hsa_fns.hsa_executable_get_symbol_fn (agent->executable, NULL, + ".offload_func_table", + agent->id, 0, &var_symbol); + if (status != HSA_STATUS_SUCCESS) + hsa_fatal ("Could not find symbol for variable in the code object", + status); + uint64_t fn_table_addr; + status = hsa_fns.hsa_executable_symbol_get_info_fn + (var_symbol, HSA_EXECUTABLE_SYMBOL_INFO_VARIABLE_ADDRESS, + &fn_table_addr); + if (status != HSA_STATUS_SUCCESS) + hsa_fatal ("Could not extract a variable from its symbol", status); + *rev_fn_table = GOMP_PLUGIN_malloc (kernel_count * sizeof (uint64_t)); + GOMP_OFFLOAD_dev2host (agent->device_id, *rev_fn_table, + (void*) fn_table_addr, + kernel_count * sizeof (uint64_t)); + } + return kernel_count + var_count + other_count; } |