Commit | Line | Data |
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c906108c | 1 | /* New version of run front end support for simulators. |
6aba47ca | 2 | Copyright (C) 1997, 2004, 2007 Free Software Foundation, Inc. |
c906108c SS |
3 | |
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
4744ac1b JB |
6 | the Free Software Foundation; either version 3 of the License, or |
7 | (at your option) any later version. | |
c906108c SS |
8 | |
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
4744ac1b JB |
14 | You should have received a copy of the GNU General Public License |
15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
c906108c SS |
16 | |
17 | #include <signal.h> | |
18 | #include "sim-main.h" | |
19 | ||
20 | #include "bfd.h" | |
21 | ||
22 | #ifdef HAVE_ENVIRON | |
23 | extern char **environ; | |
24 | #endif | |
25 | ||
027e2a04 HPN |
26 | #ifdef HAVE_UNISTD_H |
27 | /* For chdir. */ | |
28 | #include <unistd.h> | |
29 | #endif | |
30 | ||
c906108c SS |
31 | static void usage (void); |
32 | ||
33 | extern host_callback default_callback; | |
34 | ||
35 | static char *myname; | |
36 | ||
37 | static SIM_DESC sd; | |
38 | ||
39 | static RETSIGTYPE | |
40 | cntrl_c (int sig) | |
41 | { | |
42 | if (! sim_stop (sd)) | |
43 | { | |
44 | fprintf (stderr, "Quit!\n"); | |
45 | exit (1); | |
46 | } | |
47 | } | |
48 | ||
49 | int | |
50 | main (int argc, char **argv) | |
51 | { | |
52 | char *name; | |
53 | char **prog_argv = NULL; | |
6b4a8935 | 54 | struct bfd *prog_bfd; |
c906108c SS |
55 | enum sim_stop reason; |
56 | int sigrc = 0; | |
57 | int single_step = 0; | |
58 | RETSIGTYPE (*prev_sigint) (); | |
59 | ||
60 | myname = argv[0] + strlen (argv[0]); | |
61 | while (myname > argv[0] && myname[-1] != '/') | |
62 | --myname; | |
63 | ||
64 | /* INTERNAL: When MYNAME is `step', single step the simulator | |
65 | instead of allowing it to run free. The sole purpose of this | |
66 | HACK is to allow the sim_resume interface's step argument to be | |
67 | tested without having to build/run gdb. */ | |
68 | if (strlen (myname) > 4 && strcmp (myname - 4, "step") == 0) | |
69 | { | |
70 | single_step = 1; | |
71 | } | |
72 | ||
73 | /* Create an instance of the simulator. */ | |
74 | default_callback.init (&default_callback); | |
75 | sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, NULL, argv); | |
76 | if (sd == 0) | |
77 | exit (1); | |
78 | if (STATE_MAGIC (sd) != SIM_MAGIC_NUMBER) | |
79 | { | |
80 | fprintf (stderr, "Internal error - bad magic number in simulator struct\n"); | |
81 | abort (); | |
82 | } | |
83 | ||
f4f8cce4 HPN |
84 | /* We can't set the endianness in the callback structure until |
85 | sim_config is called, which happens in sim_open. */ | |
86 | default_callback.target_endian | |
87 | = (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN | |
88 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
89 | ||
c906108c SS |
90 | /* Was there a program to run? */ |
91 | prog_argv = STATE_PROG_ARGV (sd); | |
92 | prog_bfd = STATE_PROG_BFD (sd); | |
93 | if (prog_argv == NULL || *prog_argv == NULL) | |
94 | usage (); | |
95 | ||
96 | name = *prog_argv; | |
97 | ||
98 | /* For simulators that don't open prog during sim_open() */ | |
99 | if (prog_bfd == NULL) | |
100 | { | |
101 | prog_bfd = bfd_openr (name, 0); | |
102 | if (prog_bfd == NULL) | |
103 | { | |
104 | fprintf (stderr, "%s: can't open \"%s\": %s\n", | |
105 | myname, name, bfd_errmsg (bfd_get_error ())); | |
106 | exit (1); | |
107 | } | |
108 | if (!bfd_check_format (prog_bfd, bfd_object)) | |
109 | { | |
110 | fprintf (stderr, "%s: \"%s\" is not an object file: %s\n", | |
111 | myname, name, bfd_errmsg (bfd_get_error ())); | |
112 | exit (1); | |
113 | } | |
114 | } | |
115 | ||
116 | if (STATE_VERBOSE_P (sd)) | |
117 | printf ("%s %s\n", myname, name); | |
118 | ||
119 | /* Load the program into the simulator. */ | |
120 | if (sim_load (sd, name, prog_bfd, 0) == SIM_RC_FAIL) | |
121 | exit (1); | |
122 | ||
123 | /* Prepare the program for execution. */ | |
124 | #ifdef HAVE_ENVIRON | |
125 | sim_create_inferior (sd, prog_bfd, prog_argv, environ); | |
126 | #else | |
127 | sim_create_inferior (sd, prog_bfd, prog_argv, NULL); | |
128 | #endif | |
129 | ||
027e2a04 HPN |
130 | /* To accommodate relative file paths, chdir to sysroot now. We |
131 | mustn't do this until BFD has opened the program, else we wouldn't | |
132 | find the executable if it has a relative file path. */ | |
133 | if (simulator_sysroot[0] != '\0' && chdir (simulator_sysroot) < 0) | |
134 | { | |
135 | fprintf (stderr, "%s: can't change directory to \"%s\"\n", | |
136 | myname, simulator_sysroot); | |
137 | exit (1); | |
138 | } | |
139 | ||
c906108c SS |
140 | /* Run/Step the program. */ |
141 | if (single_step) | |
142 | { | |
143 | do | |
144 | { | |
145 | prev_sigint = signal (SIGINT, cntrl_c); | |
146 | sim_resume (sd, 1/*step*/, 0); | |
147 | signal (SIGINT, prev_sigint); | |
148 | sim_stop_reason (sd, &reason, &sigrc); | |
149 | ||
150 | if ((reason == sim_stopped) && | |
151 | (sigrc == sim_signal_to_host (sd, SIM_SIGINT))) | |
152 | break; /* exit on control-C */ | |
153 | } | |
154 | /* remain on breakpoint or signals in oe mode*/ | |
155 | while (((reason == sim_signalled) && | |
156 | (sigrc == sim_signal_to_host (sd, SIM_SIGTRAP))) || | |
157 | ((reason == sim_stopped) && | |
158 | (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT))); | |
159 | } | |
43e526b9 | 160 | else |
c906108c | 161 | { |
43e526b9 JM |
162 | do |
163 | { | |
c906108c | 164 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) |
43e526b9 JM |
165 | struct sigaction sa, osa; |
166 | sa.sa_handler = cntrl_c; | |
167 | sigemptyset (&sa.sa_mask); | |
168 | sa.sa_flags = 0; | |
169 | sigaction (SIGINT, &sa, &osa); | |
170 | prev_sigint = osa.sa_handler; | |
c906108c | 171 | #else |
43e526b9 | 172 | prev_sigint = signal (SIGINT, cntrl_c); |
c906108c | 173 | #endif |
43e526b9 JM |
174 | sim_resume (sd, 0, sigrc); |
175 | signal (SIGINT, prev_sigint); | |
176 | sim_stop_reason (sd, &reason, &sigrc); | |
177 | ||
178 | if ((reason == sim_stopped) && | |
179 | (sigrc == sim_signal_to_host (sd, SIM_SIGINT))) | |
180 | break; /* exit on control-C */ | |
181 | ||
182 | /* remain on signals in oe mode */ | |
183 | } while ((reason == sim_stopped) && | |
184 | (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)); | |
185 | ||
186 | } | |
c906108c | 187 | /* Print any stats the simulator collected. */ |
f9cbceb6 AC |
188 | if (STATE_VERBOSE_P (sd)) |
189 | sim_info (sd, 0); | |
43e526b9 | 190 | |
c906108c SS |
191 | /* Shutdown the simulator. */ |
192 | sim_close (sd, 0); | |
43e526b9 | 193 | |
c906108c SS |
194 | /* If reason is sim_exited, then sigrc holds the exit code which we want |
195 | to return. If reason is sim_stopped or sim_signalled, then sigrc holds | |
196 | the signal that the simulator received; we want to return that to | |
197 | indicate failure. */ | |
43e526b9 | 198 | |
c906108c SS |
199 | /* Why did we stop? */ |
200 | switch (reason) | |
201 | { | |
202 | case sim_signalled: | |
203 | case sim_stopped: | |
204 | if (sigrc != 0) | |
205 | fprintf (stderr, "program stopped with signal %d.\n", sigrc); | |
206 | break; | |
207 | ||
208 | case sim_exited: | |
209 | break; | |
210 | ||
211 | default: | |
212 | fprintf (stderr, "program in undefined state (%d:%d)\n", reason, sigrc); | |
213 | break; | |
214 | ||
215 | } | |
c906108c SS |
216 | |
217 | return sigrc; | |
218 | } | |
219 | ||
220 | static void | |
221 | usage () | |
222 | { | |
223 | fprintf (stderr, "Usage: %s [options] program [program args]\n", myname); | |
224 | fprintf (stderr, "Run `%s --help' for full list of options.\n", myname); | |
225 | exit (1); | |
226 | } |