Commit | Line | Data |
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c906108c | 1 | /* New version of run front end support for simulators. |
027e2a04 | 2 | Copyright (C) 1997, 2004 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 | |
6 | the Free Software Foundation; either version 2, or (at your option) | |
7 | any later version. | |
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 | ||
14 | You should have received a copy of the GNU General Public License along | |
15 | with this program; if not, write to the Free Software Foundation, Inc., | |
16 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
17 | ||
18 | #include <signal.h> | |
19 | #include "sim-main.h" | |
20 | ||
21 | #include "bfd.h" | |
22 | ||
23 | #ifdef HAVE_ENVIRON | |
24 | extern char **environ; | |
25 | #endif | |
26 | ||
027e2a04 HPN |
27 | #ifdef HAVE_UNISTD_H |
28 | /* For chdir. */ | |
29 | #include <unistd.h> | |
30 | #endif | |
31 | ||
c906108c SS |
32 | static void usage (void); |
33 | ||
34 | extern host_callback default_callback; | |
35 | ||
36 | static char *myname; | |
37 | ||
38 | static SIM_DESC sd; | |
39 | ||
40 | static RETSIGTYPE | |
41 | cntrl_c (int sig) | |
42 | { | |
43 | if (! sim_stop (sd)) | |
44 | { | |
45 | fprintf (stderr, "Quit!\n"); | |
46 | exit (1); | |
47 | } | |
48 | } | |
49 | ||
50 | int | |
51 | main (int argc, char **argv) | |
52 | { | |
53 | char *name; | |
54 | char **prog_argv = NULL; | |
6b4a8935 | 55 | struct bfd *prog_bfd; |
c906108c SS |
56 | enum sim_stop reason; |
57 | int sigrc = 0; | |
58 | int single_step = 0; | |
59 | RETSIGTYPE (*prev_sigint) (); | |
60 | ||
61 | myname = argv[0] + strlen (argv[0]); | |
62 | while (myname > argv[0] && myname[-1] != '/') | |
63 | --myname; | |
64 | ||
65 | /* INTERNAL: When MYNAME is `step', single step the simulator | |
66 | instead of allowing it to run free. The sole purpose of this | |
67 | HACK is to allow the sim_resume interface's step argument to be | |
68 | tested without having to build/run gdb. */ | |
69 | if (strlen (myname) > 4 && strcmp (myname - 4, "step") == 0) | |
70 | { | |
71 | single_step = 1; | |
72 | } | |
73 | ||
74 | /* Create an instance of the simulator. */ | |
75 | default_callback.init (&default_callback); | |
76 | sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, NULL, argv); | |
77 | if (sd == 0) | |
78 | exit (1); | |
79 | if (STATE_MAGIC (sd) != SIM_MAGIC_NUMBER) | |
80 | { | |
81 | fprintf (stderr, "Internal error - bad magic number in simulator struct\n"); | |
82 | abort (); | |
83 | } | |
84 | ||
85 | /* Was there a program to run? */ | |
86 | prog_argv = STATE_PROG_ARGV (sd); | |
87 | prog_bfd = STATE_PROG_BFD (sd); | |
88 | if (prog_argv == NULL || *prog_argv == NULL) | |
89 | usage (); | |
90 | ||
91 | name = *prog_argv; | |
92 | ||
93 | /* For simulators that don't open prog during sim_open() */ | |
94 | if (prog_bfd == NULL) | |
95 | { | |
96 | prog_bfd = bfd_openr (name, 0); | |
97 | if (prog_bfd == NULL) | |
98 | { | |
99 | fprintf (stderr, "%s: can't open \"%s\": %s\n", | |
100 | myname, name, bfd_errmsg (bfd_get_error ())); | |
101 | exit (1); | |
102 | } | |
103 | if (!bfd_check_format (prog_bfd, bfd_object)) | |
104 | { | |
105 | fprintf (stderr, "%s: \"%s\" is not an object file: %s\n", | |
106 | myname, name, bfd_errmsg (bfd_get_error ())); | |
107 | exit (1); | |
108 | } | |
109 | } | |
110 | ||
111 | if (STATE_VERBOSE_P (sd)) | |
112 | printf ("%s %s\n", myname, name); | |
113 | ||
114 | /* Load the program into the simulator. */ | |
115 | if (sim_load (sd, name, prog_bfd, 0) == SIM_RC_FAIL) | |
116 | exit (1); | |
117 | ||
118 | /* Prepare the program for execution. */ | |
119 | #ifdef HAVE_ENVIRON | |
120 | sim_create_inferior (sd, prog_bfd, prog_argv, environ); | |
121 | #else | |
122 | sim_create_inferior (sd, prog_bfd, prog_argv, NULL); | |
123 | #endif | |
124 | ||
027e2a04 HPN |
125 | /* To accommodate relative file paths, chdir to sysroot now. We |
126 | mustn't do this until BFD has opened the program, else we wouldn't | |
127 | find the executable if it has a relative file path. */ | |
128 | if (simulator_sysroot[0] != '\0' && chdir (simulator_sysroot) < 0) | |
129 | { | |
130 | fprintf (stderr, "%s: can't change directory to \"%s\"\n", | |
131 | myname, simulator_sysroot); | |
132 | exit (1); | |
133 | } | |
134 | ||
c906108c SS |
135 | /* Run/Step the program. */ |
136 | if (single_step) | |
137 | { | |
138 | do | |
139 | { | |
140 | prev_sigint = signal (SIGINT, cntrl_c); | |
141 | sim_resume (sd, 1/*step*/, 0); | |
142 | signal (SIGINT, prev_sigint); | |
143 | sim_stop_reason (sd, &reason, &sigrc); | |
144 | ||
145 | if ((reason == sim_stopped) && | |
146 | (sigrc == sim_signal_to_host (sd, SIM_SIGINT))) | |
147 | break; /* exit on control-C */ | |
148 | } | |
149 | /* remain on breakpoint or signals in oe mode*/ | |
150 | while (((reason == sim_signalled) && | |
151 | (sigrc == sim_signal_to_host (sd, SIM_SIGTRAP))) || | |
152 | ((reason == sim_stopped) && | |
153 | (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT))); | |
154 | } | |
43e526b9 | 155 | else |
c906108c | 156 | { |
43e526b9 JM |
157 | do |
158 | { | |
c906108c | 159 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) |
43e526b9 JM |
160 | struct sigaction sa, osa; |
161 | sa.sa_handler = cntrl_c; | |
162 | sigemptyset (&sa.sa_mask); | |
163 | sa.sa_flags = 0; | |
164 | sigaction (SIGINT, &sa, &osa); | |
165 | prev_sigint = osa.sa_handler; | |
c906108c | 166 | #else |
43e526b9 | 167 | prev_sigint = signal (SIGINT, cntrl_c); |
c906108c | 168 | #endif |
43e526b9 JM |
169 | sim_resume (sd, 0, sigrc); |
170 | signal (SIGINT, prev_sigint); | |
171 | sim_stop_reason (sd, &reason, &sigrc); | |
172 | ||
173 | if ((reason == sim_stopped) && | |
174 | (sigrc == sim_signal_to_host (sd, SIM_SIGINT))) | |
175 | break; /* exit on control-C */ | |
176 | ||
177 | /* remain on signals in oe mode */ | |
178 | } while ((reason == sim_stopped) && | |
179 | (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)); | |
180 | ||
181 | } | |
c906108c | 182 | /* Print any stats the simulator collected. */ |
f9cbceb6 AC |
183 | if (STATE_VERBOSE_P (sd)) |
184 | sim_info (sd, 0); | |
43e526b9 | 185 | |
c906108c SS |
186 | /* Shutdown the simulator. */ |
187 | sim_close (sd, 0); | |
43e526b9 | 188 | |
c906108c SS |
189 | /* If reason is sim_exited, then sigrc holds the exit code which we want |
190 | to return. If reason is sim_stopped or sim_signalled, then sigrc holds | |
191 | the signal that the simulator received; we want to return that to | |
192 | indicate failure. */ | |
43e526b9 | 193 | |
c906108c SS |
194 | /* Why did we stop? */ |
195 | switch (reason) | |
196 | { | |
197 | case sim_signalled: | |
198 | case sim_stopped: | |
199 | if (sigrc != 0) | |
200 | fprintf (stderr, "program stopped with signal %d.\n", sigrc); | |
201 | break; | |
202 | ||
203 | case sim_exited: | |
204 | break; | |
205 | ||
206 | default: | |
207 | fprintf (stderr, "program in undefined state (%d:%d)\n", reason, sigrc); | |
208 | break; | |
209 | ||
210 | } | |
c906108c SS |
211 | |
212 | return sigrc; | |
213 | } | |
214 | ||
215 | static void | |
216 | usage () | |
217 | { | |
218 | fprintf (stderr, "Usage: %s [options] program [program args]\n", myname); | |
219 | fprintf (stderr, "Run `%s --help' for full list of options.\n", myname); | |
220 | exit (1); | |
221 | } |