1/* Internals of libgccjit: implementation of gcc_jit_result
2   Copyright (C) 2013-2022 Free Software Foundation, Inc.
3   Contributed by David Malcolm <dmalcolm@redhat.com>.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it
8under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 3, or (at your option)
10any later version.
11
12GCC is distributed in the hope that it will be useful, but
13WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3.  If not see
19<http://www.gnu.org/licenses/>.  */
20
21#include "config.h"
22#include "system.h"
23#include "coretypes.h"
24
25#include "jit-common.h"
26#include "jit-logging.h"
27#include "jit-result.h"
28#include "jit-tempdir.h"
29
30#ifdef _WIN32
31#include "jit-w32.h"
32#endif
33
34namespace gcc {
35namespace jit {
36
37/* Constructor for gcc::jit::result.  */
38
39result::
40result(logger *logger, handle dso_handle, tempdir *tempdir_) :
41  log_user (logger),
42  m_dso_handle (dso_handle),
43  m_tempdir (tempdir_)
44{
45  JIT_LOG_SCOPE (get_logger ());
46}
47
48/* gcc::jit::result's destructor.
49
50   Called implicitly by gcc_jit_result_release.  */
51
52result::~result()
53{
54  JIT_LOG_SCOPE (get_logger ());
55
56#ifdef _WIN32
57  FreeLibrary(m_dso_handle);
58#else
59  dlclose (m_dso_handle);
60#endif
61  /* Responsibility for cleaning up the tempdir (including "fake.so" within
62     the filesystem) might have been handed to us by the playback::context,
63     so that the cleanup can be delayed (see PR jit/64206).
64
65     If so, clean it up now.  */
66  delete m_tempdir;
67}
68
69/* Attempt to locate the given function by name within the
70   playback::result, using dlsym.
71
72   Implements the post-error-checking part of
73   gcc_jit_result_get_code.  */
74
75void *
76result::
77get_code (const char *funcname)
78{
79  JIT_LOG_SCOPE (get_logger ());
80
81  void *code;
82
83#ifdef _WIN32
84  /* Clear any existing error.  */
85  SetLastError(0);
86
87  code = (void *)GetProcAddress(m_dso_handle, funcname);
88  if (GetLastError() != 0)  {
89    print_last_error ();
90  }
91#else
92  const char *error;
93  /* Clear any existing error.  */
94  dlerror ();
95
96  code = dlsym (m_dso_handle, funcname);
97
98  if ((error = dlerror()) != NULL)  {
99    fprintf(stderr, "%s\n", error);
100  }
101#endif
102
103  return code;
104}
105
106/* Attempt to locate the given global by name within the
107   playback::result, using dlsym.
108
109   Implements the post-error-checking part of
110   gcc_jit_result_get_global.  */
111
112void *
113result::
114get_global (const char *name)
115{
116  JIT_LOG_SCOPE (get_logger ());
117
118  void *global;
119
120#ifdef _WIN32
121  /* Clear any existing error.  */
122  SetLastError(0);
123
124  global = (void *)GetProcAddress(m_dso_handle, name);
125  if (GetLastError() != 0)  {
126    print_last_error ();
127  }
128#else
129  const char *error;
130  /* Clear any existing error.  */
131  dlerror ();
132
133  global = dlsym (m_dso_handle, name);
134
135  if ((error = dlerror()) != NULL)  {
136    fprintf(stderr, "%s\n", error);
137  }
138#endif
139
140  return global;
141}
142
143} // namespace gcc::jit
144
145} // namespace gcc
146