Peter Park
149 baris
4.7 KiB
C
149 baris
4.7 KiB
C
// MIT License
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//
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// Copyright (c) 2022-2025 Advanced Micro Devices, Inc. All Rights Reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// 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 shall be included in all
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// copies or substantial portions of the 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 THE
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// 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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#define _GNU_SOURCE
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#define ROCPROFSYS_PUBLIC_API __attribute__((visibility("default")));
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#define ROCPROFSYS_HIDDEN_API __attribute__((visibility("hidden")));
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#define ROCPROFSYS_INTERNAL_API __attribute__((visibility("internal")));
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#include <dlfcn.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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//
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// local type definitions
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//
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typedef int (*main_func_t)(int, char**, char**);
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typedef void (*init_func_t)(void);
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typedef int (*start_main_t)(int (*)(int, char**, char**), int, char**, void (*)(void),
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void (*)(void), void (*)(void), void*);
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//
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// local function declarations
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//
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int
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rocprofsys_libc_start_main(int (*)(int, char**, char**), int, char**, void (*)(void),
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void (*)(void), void (*)(void), void*) ROCPROFSYS_INTERNAL_API;
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int
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__libc_start_main(int (*)(int, char**, char**), int, char**, void (*)(void),
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void (*)(void), void (*)(void), void*) ROCPROFSYS_PUBLIC_API;
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//
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// external function declarations
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//
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extern int
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rocprofsys_preload_library(void);
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extern void
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rocprofsys_finalize(void);
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extern void
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rocprofsys_push_trace(const char* name);
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extern void
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rocprofsys_pop_trace(const char* name);
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extern void
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rocprofsys_init_tooling(void);
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extern void
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rocprofsys_init(const char*, bool, const char*);
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extern char*
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basename(const char*);
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extern void rocprofsys_set_main(main_func_t) ROCPROFSYS_INTERNAL_API;
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extern void
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rocprofsys_set_main_init(init_func_t func) ROCPROFSYS_INTERNAL_API;
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extern void
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rocprofsys_main_init(void) ROCPROFSYS_INTERNAL_API;
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extern int
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rocprofsys_main(int argc, char** argv, char** envp) ROCPROFSYS_INTERNAL_API;
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int
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rocprofsys_libc_start_main(int (*_main)(int, char**, char**), int _argc, char** _argv,
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void (*_init)(void), void (*_fini)(void),
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void (*_rtld_fini)(void), void* _stack_end)
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{
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int _preload = rocprofsys_preload_library();
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// prevent re-entry
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static int _reentry = 0;
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if(_reentry > 0) return -1;
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_reentry = 1;
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// get the address of this function
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void* _this_func = __builtin_return_address(0);
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// Save the real main function addresses
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rocprofsys_set_main(_main);
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rocprofsys_set_main_init(_init);
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// Find the real __libc_start_main()
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start_main_t user_main = dlsym(RTLD_NEXT, "__libc_start_main");
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// disable future LD_PRELOADs
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setenv("ROCPROFSYS_PRELOAD", "0", 1);
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if(user_main && user_main != _this_func)
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{
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if(_preload == 0)
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{
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// call original main
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return user_main(_main, _argc, _argv, _init, _fini, _rtld_fini, _stack_end);
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}
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else
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{
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// return user_main(rocprofsys_main, _argc, _argv,
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// rocprofsys_main_init, _fini,
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// _rtld_fini, _stack_end);
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// call rocprof-sys main function wrapper
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return user_main(rocprofsys_main, _argc, _argv, _init, _fini, _rtld_fini,
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_stack_end);
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}
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}
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else
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{
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fputs("Error! rocprof-sys could not find __libc_start_main!", stderr);
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return -1;
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}
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}
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int
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__libc_start_main(int (*_main)(int, char**, char**), int _argc, char** _argv,
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void (*_init)(void), void (*_fini)(void), void (*_rtld_fini)(void),
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void* _stack_end)
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{
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// intercept the main function
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return rocprofsys_libc_start_main(_main, _argc, _argv, _init, _fini, _rtld_fini,
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_stack_end);
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}
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