sim: add --info-target for listing supported BFD targets

It can be difficult to guess the exact bfd name, so add an option to
list all the targets that the current build supports.  This aligns with
other simulator options like --info-architecture.

diff --git a/sim/common/sim-options.c b/sim/common/sim-options.c
index e6d1107f7c5538f1bad615101fc657a3b0913c31..e82ac33fe764a0d9a1d6488b93e583726910e00d 100644 (file)
--- a/sim/common/sim-options.c
+++ b/sim/common/sim-options.c
@@ -93,6 +93,7 @@ typedef enum {
   OPTION_DO_COMMAND,
   OPTION_ARCHITECTURE,
   OPTION_TARGET,
+  OPTION_TARGET_INFO,
   OPTION_ARCHITECTURE_INFO,
   OPTION_ENVIRONMENT,
   OPTION_ALIGNMENT,
@@ -161,6 +162,10 @@ static const OPTION standard_options[] =
   { {"target", required_argument, NULL, OPTION_TARGET},
       '\0', "BFDNAME", "Specify the object-code format for the object files",
       standard_option_handler },
+  { {"target-info", no_argument, NULL, OPTION_TARGET_INFO},
+      '\0', NULL, "List supported targets", standard_option_handler },
+  { {"info-target", no_argument, NULL, OPTION_TARGET_INFO},
+      '\0', NULL, NULL, standard_option_handler },
 
   { {"load-lma", no_argument, NULL, OPTION_LOAD_LMA},
       '\0', NULL,
@@ -365,6 +370,20 @@ standard_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
        break;
       }
 
+    case OPTION_TARGET_INFO:
+      {
+       const char **list = bfd_target_list ();
+       const char **lp;
+       if (list == NULL)
+         abort ();
+       sim_io_printf (sd, "Possible targets:");
+       for (lp = list; *lp != NULL; lp++)
+         sim_io_printf (sd, " %s", *lp);
+       sim_io_printf (sd, "\n");
+       free (list);
+       break;
+      }
+
     case OPTION_LOAD_LMA:
       {
        STATE_LOAD_AT_LMA_P (sd) = 1;