1 /* Internals of libgccjit: implementation of gcc_jit_result
2 Copyright (C) 2013-2021 Free Software Foundation, Inc.
3 Contributed by David Malcolm <dmalcolm@redhat.com>.
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along 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
34 namespace gcc {
35 namespace jit {
36
37 /* Constructor for gcc::jit::result. */
38
39 result::
result(logger * logger,handle dso_handle,tempdir * tempdir_)40 result(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
~result()52 result::~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
75 void *
76 result::
get_code(const char * funcname)77 get_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
112 void *
113 result::
get_global(const char * name)114 get_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