147 lines
4.5 KiB
C
147 lines
4.5 KiB
C
/*
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* Copyright 2014-2019 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef AC_RTLD_H
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#define AC_RTLD_H
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#include "compiler/shader_enums.h"
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#include "util/u_dynarray.h"
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#include "amd_family.h"
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct ac_rtld_part;
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struct ac_shader_config;
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struct radeon_info;
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struct ac_rtld_symbol {
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const char *name;
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uint32_t size;
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uint32_t align;
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uint64_t offset; /* filled in by ac_rtld_open */
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unsigned part_idx; /* shader part in which this symbol appears */
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};
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struct ac_rtld_options {
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/* Loader will insert an s_sethalt 1 instruction as the
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* first instruction. */
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bool halt_at_entry : 1;
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};
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/* Lightweight wrapper around underlying ELF objects. */
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struct ac_rtld_binary {
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struct ac_rtld_options options;
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enum amd_gfx_level gfx_level;
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unsigned wave_size;
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/* Required buffer sizes, currently read/executable only. */
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uint64_t rx_size;
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/* Size of executable code, for reporting purposes. */
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uint64_t exec_size;
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uint64_t rx_end_markers;
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unsigned num_parts;
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struct ac_rtld_part *parts;
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struct util_dynarray lds_symbols;
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uint32_t lds_size;
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};
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/**
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* Callback function type used during upload to resolve external symbols that
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* are not defined in any of the ELF binaries available to the linker.
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*
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* \param cb_data caller-defined data
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* \param symbol NUL-terminated symbol name
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* \param value to be filled in by the callback
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* \return whether the symbol was found successfully
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*/
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typedef bool (*ac_rtld_get_external_symbol_cb)(enum amd_gfx_level gfx_level, void *cb_data,
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const char *symbol, uint64_t *value);
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/**
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* Lifetimes of \ref info, in-memory ELF objects, and the names of
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* \ref shared_lds_symbols must extend until \ref ac_rtld_close is called on
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* the opened binary.
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*/
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struct ac_rtld_open_info {
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const struct radeon_info *info;
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struct ac_rtld_options options;
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gl_shader_stage shader_type;
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unsigned wave_size;
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unsigned num_parts;
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const char *const *elf_ptrs; /* in-memory ELF objects of each part */
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const size_t *elf_sizes; /* sizes of corresponding in-memory ELF objects in bytes */
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/* Shared LDS symbols are layouted such that they are accessible from
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* all shader parts. Non-shared (private) LDS symbols of one part may
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* overlap private LDS symbols of another shader part.
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*/
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unsigned num_shared_lds_symbols;
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const struct ac_rtld_symbol *shared_lds_symbols;
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};
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bool ac_rtld_open(struct ac_rtld_binary *binary, struct ac_rtld_open_info i);
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void ac_rtld_close(struct ac_rtld_binary *binary);
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bool ac_rtld_get_section_by_name(struct ac_rtld_binary *binary, const char *name, const char **data,
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size_t *nbytes);
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bool ac_rtld_read_config(const struct radeon_info *info, struct ac_rtld_binary *binary,
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struct ac_shader_config *config);
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struct ac_rtld_upload_info {
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struct ac_rtld_binary *binary;
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/** GPU mapping of the read/executable buffer. */
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uint64_t rx_va;
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/** CPU mapping of the read/executable buffer */
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char *rx_ptr;
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/** Optional callback function that will be queried for symbols not
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* defined in any of the binary's parts. */
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ac_rtld_get_external_symbol_cb get_external_symbol;
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/** Caller-defined data that will be passed to callback functions. */
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void *cb_data;
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};
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int ac_rtld_upload(struct ac_rtld_upload_info *u);
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#ifdef __cplusplus
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}
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#endif
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#endif /* AC_RTLD_H */
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