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