SCP, PDP11: Added HELP CPU BREAK to display info about breakpoint types

PDP11/pdp11_cpu.c

@@ -657,15 +657,6 @@ MTAB cpu_mod[] = {
     { 0 }
     };
 
-DEVICE cpu_dev = {
-    "CPU", &cpu_unit, cpu_reg, cpu_mod,
-    1, 8, 22, 2, 8, 16,
-    &cpu_ex, &cpu_dep, &cpu_reset,
-    NULL, NULL, NULL,
-    NULL, DEV_DYNM, 0,
-    NULL, &cpu_set_size, NULL
-    };
-
 BRKTYPTAB cpu_breakpoints [] = {
     BRKTYPE('E',"Execute Instruction at Virtual Address"),
     BRKTYPE('P',"Execute Instruction at Physical Address"),
@@ -676,6 +667,17 @@ BRKTYPTAB cpu_breakpoints [] = {
     { 0 }
     };
 
+DEVICE cpu_dev = {
+    "CPU", &cpu_unit, cpu_reg, cpu_mod,
+    1, 8, 22, 2, 8, 16,
+    &cpu_ex, &cpu_dep, &cpu_reset,
+    NULL, NULL, NULL,
+    NULL, DEV_DYNM, 0,
+    NULL, &cpu_set_size, NULL,
+    NULL, NULL, NULL, NULL,
+    cpu_breakpoints
+    };
+
 t_value pdp11_pc_value (void)
 {
 return (t_value)PC;

scp.c

@@ -2434,6 +2434,40 @@ void fprint_show_help (FILE *st, DEVICE *dptr)
     fprint_show_help_ex (st, dptr, TRUE);
     }
 
+void fprint_brk_help_ex (FILE *st, DEVICE *dptr, t_bool silent)
+{
+BRKTYPTAB *brkt = dptr->brk_types;
+char gbuf[CBUFSIZE];
+
+if (sim_brk_types == 0) {
+    if (!silent) {
+        fprintf (st, "Breakpoints are not supported in the %s simulator\n", sim_name);
+        if (dptr->help)
+            dptr->help (st, dptr, NULL, 0, NULL);
+        }
+    return;
+    }
+if (brkt == NULL) {
+    int i;
+
+    if (sim_brk_types & ~sim_brk_dflt) {
+        fprintf (st, "%s supports the following breakpoint types:\n", sim_dname (dptr));
+        for (i=0; i<26; i++) {
+            if (sim_brk_types & (1<<i))
+                fprintf (st, "  -%c\n", 'A'+i);
+            }
+        }
+    fprintf (st, "The default breakpoint type is: %s\n", put_switches (gbuf, sizeof(gbuf), sim_brk_dflt));
+    return;
+    }
+fprintf (st, "%s supports the following breakpoint types:\n", sim_dname (dptr));
+while (brkt->btyp) {
+    fprintf (st, "  %s     %s\n", put_switches (gbuf, sizeof(gbuf), brkt->btyp), brkt->desc);
+    ++brkt;
+    }
+fprintf (st, "The default breakpoint type is: %s\n", put_switches (gbuf, sizeof(gbuf), sim_brk_dflt));
+}
+
 t_stat help_dev_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr)
 {
 char gbuf[CBUFSIZE];
@@ -2461,6 +2495,10 @@ if (*cptr) {
             fprint_attach_help_ex (st, dptr, FALSE);
             return SCPE_OK;
             }
+        if (cmdp->action == &brk_cmd) {
+            fprint_brk_help_ex (st, dptr, FALSE);
+            return SCPE_OK;
+            }
         if (dptr->help)
             return dptr->help (st, dptr, uptr, flag, cptr);
         fprintf (st, "No %s help is available for the %s device\n", cmdp->name, dptr->name);
@@ -2486,6 +2524,7 @@ fprint_set_help_ex (st, dptr, TRUE);
 fprint_show_help_ex (st, dptr, TRUE);
 fprint_attach_help_ex (st, dptr, TRUE);
 fprint_reg_help_ex (st, dptr, TRUE);
+fprint_brk_help_ex (st, dptr, TRUE);
 return SCPE_OK;
 }
 

sim_defs.h

@@ -467,6 +467,7 @@ struct DEVICE {
                                                         /* attach help */
     void *help_ctx;                                     /* Context available to help routines */
     const char          *(*description)(DEVICE *dptr);  /* Device Description */
+    BRKTYPTAB           *brk_types;                     /* Breakpoint types */
     };
 
 /* Device flags */