srn_dbg_sym.c

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/* -*- C -*-
 * Serene programming language
 * Copyright (C) 2019-2026 Sameer Rahmani <lxsameer@lxsameer.com>
 *
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#include "serene/utils/srn_dbg_sym.h"
 
#if SRN_DBG_SYM_WIN32
 
#  include <dbghelp.h>
#  include <string.h>
#  include <windows.h>
 
const char *srn_dbg_sym_name(void *addr, char *buf, size_t buflen) {
  if (buflen == 0) {
    return nullptr;
  }
 
  char sym_buf[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
  SYMBOL_INFO *sym  = (SYMBOL_INFO *)sym_buf;
  sym->SizeOfStruct = sizeof(SYMBOL_INFO);
  sym->MaxNameLen   = MAX_SYM_NAME;
 
  DWORD64 displacement = 0;
  if (SymFromAddr(GetCurrentProcess(), (DWORD64)(uintptr_t)addr, &displacement, sym)) {
    strncpy(buf, sym->Name, buflen - 1);
    buf[buflen - 1] = '\0';
    return buf;
  }
 
  return nullptr;
}
 
#endif