15b81b6b3SRodney W. Grimes /* 25b81b6b3SRodney W. Grimes * Mach Operating System 35b81b6b3SRodney W. Grimes * Copyright (c) 1991,1990 Carnegie Mellon University 45b81b6b3SRodney W. Grimes * All Rights Reserved. 55b81b6b3SRodney W. Grimes * 65b81b6b3SRodney W. Grimes * Permission to use, copy, modify and distribute this software and its 75b81b6b3SRodney W. Grimes * documentation is hereby granted, provided that both the copyright 85b81b6b3SRodney W. Grimes * notice and this permission notice appear in all copies of the 95b81b6b3SRodney W. Grimes * software, derivative works or modified versions, and any portions 105b81b6b3SRodney W. Grimes * thereof, and that both notices appear in supporting documentation. 115b81b6b3SRodney W. Grimes * 125b81b6b3SRodney W. Grimes * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS 135b81b6b3SRodney W. Grimes * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 145b81b6b3SRodney W. Grimes * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 155b81b6b3SRodney W. Grimes * 165b81b6b3SRodney W. Grimes * Carnegie Mellon requests users of this software to return to 175b81b6b3SRodney W. Grimes * 185b81b6b3SRodney W. Grimes * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 195b81b6b3SRodney W. Grimes * School of Computer Science 205b81b6b3SRodney W. Grimes * Carnegie Mellon University 215b81b6b3SRodney W. Grimes * Pittsburgh PA 15213-3890 225b81b6b3SRodney W. Grimes * 235b81b6b3SRodney W. Grimes * any improvements or extensions that they make and grant Carnegie the 245b81b6b3SRodney W. Grimes * rights to redistribute these changes. 250edf66ecSRodney W. Grimes * 2646e5fdffSDoug Rabson * $Id: db_run.c,v 1.15 1998/06/28 00:52:50 dfr Exp $ 275b81b6b3SRodney W. Grimes */ 280edf66ecSRodney W. Grimes 295b81b6b3SRodney W. Grimes /* 305b81b6b3SRodney W. Grimes * Author: David B. Golub, Carnegie Mellon University 315b81b6b3SRodney W. Grimes * Date: 7/90 325b81b6b3SRodney W. Grimes */ 335b81b6b3SRodney W. Grimes 345b81b6b3SRodney W. Grimes /* 355b81b6b3SRodney W. Grimes * Commands to run process. 365b81b6b3SRodney W. Grimes */ 37f540b106SGarrett Wollman #include <sys/param.h> 385b81b6b3SRodney W. Grimes 395ccbc3ccSBruce Evans #include <vm/vm.h> 405ccbc3ccSBruce Evans 415ccbc3ccSBruce Evans #include <ddb/ddb.h> 425b81b6b3SRodney W. Grimes #include <ddb/db_break.h> 435b81b6b3SRodney W. Grimes #include <ddb/db_access.h> 445b81b6b3SRodney W. Grimes 4525eb640dSPoul-Henning Kamp static int db_run_mode; 465b81b6b3SRodney W. Grimes #define STEP_NONE 0 475b81b6b3SRodney W. Grimes #define STEP_ONCE 1 485b81b6b3SRodney W. Grimes #define STEP_RETURN 2 495b81b6b3SRodney W. Grimes #define STEP_CALLT 3 505b81b6b3SRodney W. Grimes #define STEP_CONTINUE 4 515b81b6b3SRodney W. Grimes #define STEP_INVISIBLE 5 525b81b6b3SRodney W. Grimes #define STEP_COUNT 6 535b81b6b3SRodney W. Grimes 5425eb640dSPoul-Henning Kamp static boolean_t db_sstep_print; 5525eb640dSPoul-Henning Kamp static int db_loop_count; 5625eb640dSPoul-Henning Kamp static int db_call_depth; 575b81b6b3SRodney W. Grimes 585b81b6b3SRodney W. Grimes int db_inst_count; 595b81b6b3SRodney W. Grimes int db_load_count; 605b81b6b3SRodney W. Grimes int db_store_count; 615b81b6b3SRodney W. Grimes 625b81b6b3SRodney W. Grimes #ifndef db_set_single_step 63ecbb00a2SDoug Rabson extern void db_set_single_step __P((db_regs_t *regs)); 645b81b6b3SRodney W. Grimes #endif 655b81b6b3SRodney W. Grimes #ifndef db_clear_single_step 66058284fcSBruce Evans extern void db_clear_single_step __P((db_regs_t *regs)); 675b81b6b3SRodney W. Grimes #endif 685b81b6b3SRodney W. Grimes 69f73a856dSPoul-Henning Kamp #ifdef notused 70f73a856dSPoul-Henning Kamp static void db_single_step __P((db_regs_t *regs)); 71f73a856dSPoul-Henning Kamp #endif 72f73a856dSPoul-Henning Kamp 735b81b6b3SRodney W. Grimes boolean_t 745b81b6b3SRodney W. Grimes db_stop_at_pc(is_breakpoint) 755b81b6b3SRodney W. Grimes boolean_t *is_breakpoint; 765b81b6b3SRodney W. Grimes { 775b81b6b3SRodney W. Grimes register db_addr_t pc; 785b81b6b3SRodney W. Grimes register db_breakpoint_t bkpt; 795b81b6b3SRodney W. Grimes 805b81b6b3SRodney W. Grimes db_clear_single_step(DDB_REGS); 815b81b6b3SRodney W. Grimes db_clear_breakpoints(); 825b81b6b3SRodney W. Grimes db_clear_watchpoints(); 835b81b6b3SRodney W. Grimes pc = PC_REGS(DDB_REGS); 845b81b6b3SRodney W. Grimes 855b81b6b3SRodney W. Grimes #ifdef FIXUP_PC_AFTER_BREAK 865b81b6b3SRodney W. Grimes if (*is_breakpoint) { 875b81b6b3SRodney W. Grimes /* 885b81b6b3SRodney W. Grimes * Breakpoint trap. Fix up the PC if the 895b81b6b3SRodney W. Grimes * machine requires it. 905b81b6b3SRodney W. Grimes */ 915b81b6b3SRodney W. Grimes FIXUP_PC_AFTER_BREAK 925b81b6b3SRodney W. Grimes pc = PC_REGS(DDB_REGS); 935b81b6b3SRodney W. Grimes } 945b81b6b3SRodney W. Grimes #endif 955b81b6b3SRodney W. Grimes 965b81b6b3SRodney W. Grimes /* 975b81b6b3SRodney W. Grimes * Now check for a breakpoint at this address. 985b81b6b3SRodney W. Grimes */ 995b81b6b3SRodney W. Grimes bkpt = db_find_breakpoint_here(pc); 1005b81b6b3SRodney W. Grimes if (bkpt) { 1015b81b6b3SRodney W. Grimes if (--bkpt->count == 0) { 1025b81b6b3SRodney W. Grimes bkpt->count = bkpt->init_count; 1035b81b6b3SRodney W. Grimes *is_breakpoint = TRUE; 1045b81b6b3SRodney W. Grimes return (TRUE); /* stop here */ 1055b81b6b3SRodney W. Grimes } 1065b81b6b3SRodney W. Grimes } else if (*is_breakpoint) { 107ecbb00a2SDoug Rabson #ifdef __i386__ /* XXx */ 1085b81b6b3SRodney W. Grimes ddb_regs.tf_eip += 1; 109ecbb00a2SDoug Rabson #endif 1105b81b6b3SRodney W. Grimes } 1115b81b6b3SRodney W. Grimes 1125b81b6b3SRodney W. Grimes *is_breakpoint = FALSE; 1135b81b6b3SRodney W. Grimes 1145b81b6b3SRodney W. Grimes if (db_run_mode == STEP_INVISIBLE) { 1155b81b6b3SRodney W. Grimes db_run_mode = STEP_CONTINUE; 1165b81b6b3SRodney W. Grimes return (FALSE); /* continue */ 1175b81b6b3SRodney W. Grimes } 1185b81b6b3SRodney W. Grimes if (db_run_mode == STEP_COUNT) { 1195b81b6b3SRodney W. Grimes return (FALSE); /* continue */ 1205b81b6b3SRodney W. Grimes } 1215b81b6b3SRodney W. Grimes if (db_run_mode == STEP_ONCE) { 1225b81b6b3SRodney W. Grimes if (--db_loop_count > 0) { 1235b81b6b3SRodney W. Grimes if (db_sstep_print) { 1245b81b6b3SRodney W. Grimes db_printf("\t\t"); 1255b81b6b3SRodney W. Grimes db_print_loc_and_inst(pc); 1265b81b6b3SRodney W. Grimes db_printf("\n"); 1275b81b6b3SRodney W. Grimes } 1285b81b6b3SRodney W. Grimes return (FALSE); /* continue */ 1295b81b6b3SRodney W. Grimes } 1305b81b6b3SRodney W. Grimes } 1315b81b6b3SRodney W. Grimes if (db_run_mode == STEP_RETURN) { 1325b81b6b3SRodney W. Grimes db_expr_t ins = db_get_value(pc, sizeof(int), FALSE); 1335b81b6b3SRodney W. Grimes 1345b81b6b3SRodney W. Grimes /* continue until matching return */ 1355b81b6b3SRodney W. Grimes 1365b81b6b3SRodney W. Grimes if (!inst_trap_return(ins) && 1375b81b6b3SRodney W. Grimes (!inst_return(ins) || --db_call_depth != 0)) { 1385b81b6b3SRodney W. Grimes if (db_sstep_print) { 1395b81b6b3SRodney W. Grimes if (inst_call(ins) || inst_return(ins)) { 1405b81b6b3SRodney W. Grimes register int i; 1415b81b6b3SRodney W. Grimes 1425b81b6b3SRodney W. Grimes db_printf("[after %6d] ", db_inst_count); 1435b81b6b3SRodney W. Grimes for (i = db_call_depth; --i > 0; ) 1445b81b6b3SRodney W. Grimes db_printf(" "); 1455b81b6b3SRodney W. Grimes db_print_loc_and_inst(pc); 1465b81b6b3SRodney W. Grimes db_printf("\n"); 1475b81b6b3SRodney W. Grimes } 1485b81b6b3SRodney W. Grimes } 1495b81b6b3SRodney W. Grimes if (inst_call(ins)) 1505b81b6b3SRodney W. Grimes db_call_depth++; 1515b81b6b3SRodney W. Grimes return (FALSE); /* continue */ 1525b81b6b3SRodney W. Grimes } 1535b81b6b3SRodney W. Grimes } 1545b81b6b3SRodney W. Grimes if (db_run_mode == STEP_CALLT) { 1555b81b6b3SRodney W. Grimes db_expr_t ins = db_get_value(pc, sizeof(int), FALSE); 1565b81b6b3SRodney W. Grimes 1575b81b6b3SRodney W. Grimes /* continue until call or return */ 1585b81b6b3SRodney W. Grimes 1595b81b6b3SRodney W. Grimes if (!inst_call(ins) && 1605b81b6b3SRodney W. Grimes !inst_return(ins) && 1615b81b6b3SRodney W. Grimes !inst_trap_return(ins)) { 1625b81b6b3SRodney W. Grimes return (FALSE); /* continue */ 1635b81b6b3SRodney W. Grimes } 1645b81b6b3SRodney W. Grimes } 1655b81b6b3SRodney W. Grimes db_run_mode = STEP_NONE; 1665b81b6b3SRodney W. Grimes return (TRUE); 1675b81b6b3SRodney W. Grimes } 1685b81b6b3SRodney W. Grimes 1695b81b6b3SRodney W. Grimes void 1705b81b6b3SRodney W. Grimes db_restart_at_pc(watchpt) 1715b81b6b3SRodney W. Grimes boolean_t watchpt; 1725b81b6b3SRodney W. Grimes { 1735b81b6b3SRodney W. Grimes register db_addr_t pc = PC_REGS(DDB_REGS); 1745b81b6b3SRodney W. Grimes 1755b81b6b3SRodney W. Grimes if ((db_run_mode == STEP_COUNT) || 1765b81b6b3SRodney W. Grimes (db_run_mode == STEP_RETURN) || 1775b81b6b3SRodney W. Grimes (db_run_mode == STEP_CALLT)) { 1785b81b6b3SRodney W. Grimes db_expr_t ins; 1795b81b6b3SRodney W. Grimes 1805b81b6b3SRodney W. Grimes /* 1815b81b6b3SRodney W. Grimes * We are about to execute this instruction, 1825b81b6b3SRodney W. Grimes * so count it now. 1835b81b6b3SRodney W. Grimes */ 1845b81b6b3SRodney W. Grimes 1855b81b6b3SRodney W. Grimes ins = db_get_value(pc, sizeof(int), FALSE); 1865b81b6b3SRodney W. Grimes db_inst_count++; 1875b81b6b3SRodney W. Grimes db_load_count += inst_load(ins); 1885b81b6b3SRodney W. Grimes db_store_count += inst_store(ins); 1895b81b6b3SRodney W. Grimes #ifdef SOFTWARE_SSTEP 1905b81b6b3SRodney W. Grimes /* XXX works on mips, but... */ 1915b81b6b3SRodney W. Grimes if (inst_branch(ins) || inst_call(ins)) { 1925b81b6b3SRodney W. Grimes ins = db_get_value(next_instr_address(pc,1), 1935b81b6b3SRodney W. Grimes sizeof(int), FALSE); 1945b81b6b3SRodney W. Grimes db_inst_count++; 1955b81b6b3SRodney W. Grimes db_load_count += inst_load(ins); 1965b81b6b3SRodney W. Grimes db_store_count += inst_store(ins); 1975b81b6b3SRodney W. Grimes } 1985b81b6b3SRodney W. Grimes #endif SOFTWARE_SSTEP 1995b81b6b3SRodney W. Grimes } 2005b81b6b3SRodney W. Grimes 2015b81b6b3SRodney W. Grimes if (db_run_mode == STEP_CONTINUE) { 2025b81b6b3SRodney W. Grimes if (watchpt || db_find_breakpoint_here(pc)) { 2035b81b6b3SRodney W. Grimes /* 2045b81b6b3SRodney W. Grimes * Step over breakpoint/watchpoint. 2055b81b6b3SRodney W. Grimes */ 2065b81b6b3SRodney W. Grimes db_run_mode = STEP_INVISIBLE; 2075b81b6b3SRodney W. Grimes db_set_single_step(DDB_REGS); 2085b81b6b3SRodney W. Grimes } else { 2095b81b6b3SRodney W. Grimes db_set_breakpoints(); 2105b81b6b3SRodney W. Grimes db_set_watchpoints(); 2115b81b6b3SRodney W. Grimes } 2125b81b6b3SRodney W. Grimes } else { 2135b81b6b3SRodney W. Grimes db_set_single_step(DDB_REGS); 2145b81b6b3SRodney W. Grimes } 2155b81b6b3SRodney W. Grimes } 2165b81b6b3SRodney W. Grimes 217f73a856dSPoul-Henning Kamp #ifdef notused 218f73a856dSPoul-Henning Kamp static void 2195b81b6b3SRodney W. Grimes db_single_step(regs) 2205b81b6b3SRodney W. Grimes db_regs_t *regs; 2215b81b6b3SRodney W. Grimes { 2225b81b6b3SRodney W. Grimes if (db_run_mode == STEP_CONTINUE) { 2235b81b6b3SRodney W. Grimes db_run_mode = STEP_INVISIBLE; 2245b81b6b3SRodney W. Grimes db_set_single_step(regs); 2255b81b6b3SRodney W. Grimes } 2265b81b6b3SRodney W. Grimes } 227f73a856dSPoul-Henning Kamp #endif 2285b81b6b3SRodney W. Grimes 2295b81b6b3SRodney W. Grimes #ifdef SOFTWARE_SSTEP 2305b81b6b3SRodney W. Grimes /* 2315b81b6b3SRodney W. Grimes * Software implementation of single-stepping. 2325b81b6b3SRodney W. Grimes * If your machine does not have a trace mode 2335b81b6b3SRodney W. Grimes * similar to the vax or sun ones you can use 2345b81b6b3SRodney W. Grimes * this implementation, done for the mips. 2355b81b6b3SRodney W. Grimes * Just define the above conditional and provide 2365b81b6b3SRodney W. Grimes * the functions/macros defined below. 2375b81b6b3SRodney W. Grimes * 2385b81b6b3SRodney W. Grimes * extern boolean_t 2395b81b6b3SRodney W. Grimes * inst_branch(), returns true if the instruction might branch 2405b81b6b3SRodney W. Grimes * extern unsigned 2415b81b6b3SRodney W. Grimes * branch_taken(), return the address the instruction might 2425b81b6b3SRodney W. Grimes * branch to 2435b81b6b3SRodney W. Grimes * db_getreg_val(); return the value of a user register, 2445b81b6b3SRodney W. Grimes * as indicated in the hardware instruction 2455b81b6b3SRodney W. Grimes * encoding, e.g. 8 for r8 2465b81b6b3SRodney W. Grimes * 2475b81b6b3SRodney W. Grimes * next_instr_address(pc,bd) returns the address of the first 2485b81b6b3SRodney W. Grimes * instruction following the one at "pc", 2495b81b6b3SRodney W. Grimes * which is either in the taken path of 2505b81b6b3SRodney W. Grimes * the branch (bd==1) or not. This is 2515b81b6b3SRodney W. Grimes * for machines (mips) with branch delays. 2525b81b6b3SRodney W. Grimes * 2535b81b6b3SRodney W. Grimes * A single-step may involve at most 2 breakpoints - 2545b81b6b3SRodney W. Grimes * one for branch-not-taken and one for branch taken. 2555b81b6b3SRodney W. Grimes * If one of these addresses does not already have a breakpoint, 2565b81b6b3SRodney W. Grimes * we allocate a breakpoint and save it here. 2575b81b6b3SRodney W. Grimes * These breakpoints are deleted on return. 2585b81b6b3SRodney W. Grimes */ 2595b81b6b3SRodney W. Grimes db_breakpoint_t db_not_taken_bkpt = 0; 2605b81b6b3SRodney W. Grimes db_breakpoint_t db_taken_bkpt = 0; 2615b81b6b3SRodney W. Grimes 2625b81b6b3SRodney W. Grimes void 2635b81b6b3SRodney W. Grimes db_set_single_step(regs) 2645b81b6b3SRodney W. Grimes register db_regs_t *regs; 2655b81b6b3SRodney W. Grimes { 2667045d394SDoug Rabson db_addr_t pc = PC_REGS(regs), brpc; 2677045d394SDoug Rabson unsigned inst; 2685b81b6b3SRodney W. Grimes 2695b81b6b3SRodney W. Grimes /* 2705b81b6b3SRodney W. Grimes * User was stopped at pc, e.g. the instruction 2715b81b6b3SRodney W. Grimes * at pc was not executed. 2725b81b6b3SRodney W. Grimes */ 2735b81b6b3SRodney W. Grimes inst = db_get_value(pc, sizeof(int), FALSE); 2745b81b6b3SRodney W. Grimes if (inst_branch(inst) || inst_call(inst)) { 275ecbb00a2SDoug Rabson brpc = branch_taken(inst, pc, regs); 2765b81b6b3SRodney W. Grimes if (brpc != pc) { /* self-branches are hopeless */ 2775b81b6b3SRodney W. Grimes db_taken_bkpt = db_set_temp_breakpoint(brpc); 2785b81b6b3SRodney W. Grimes } 2795b81b6b3SRodney W. Grimes pc = next_instr_address(pc,1); 2805b81b6b3SRodney W. Grimes } 2815b81b6b3SRodney W. Grimes pc = next_instr_address(pc,0); 2825b81b6b3SRodney W. Grimes db_not_taken_bkpt = db_set_temp_breakpoint(pc); 2835b81b6b3SRodney W. Grimes } 2845b81b6b3SRodney W. Grimes 2855b81b6b3SRodney W. Grimes void 2865b81b6b3SRodney W. Grimes db_clear_single_step(regs) 2875b81b6b3SRodney W. Grimes db_regs_t *regs; 2885b81b6b3SRodney W. Grimes { 2895b81b6b3SRodney W. Grimes register db_breakpoint_t bkpt; 2905b81b6b3SRodney W. Grimes 2915b81b6b3SRodney W. Grimes if (db_not_taken_bkpt != 0) { 2925b81b6b3SRodney W. Grimes db_delete_temp_breakpoint(db_not_taken_bkpt); 2935b81b6b3SRodney W. Grimes db_not_taken_bkpt = 0; 2945b81b6b3SRodney W. Grimes } 29546e5fdffSDoug Rabson if (db_taken_bkpt != 0) { 29646e5fdffSDoug Rabson db_delete_temp_breakpoint(db_taken_bkpt); 29746e5fdffSDoug Rabson db_taken_bkpt = 0; 29846e5fdffSDoug Rabson } 2995b81b6b3SRodney W. Grimes } 3005b81b6b3SRodney W. Grimes 3015b81b6b3SRodney W. Grimes #endif SOFTWARE_SSTEP 3025b81b6b3SRodney W. Grimes 3035b81b6b3SRodney W. Grimes extern int db_cmd_loop_done; 3045b81b6b3SRodney W. Grimes 3055b81b6b3SRodney W. Grimes /* single-step */ 3065b81b6b3SRodney W. Grimes /*ARGSUSED*/ 3075b81b6b3SRodney W. Grimes void 3085b81b6b3SRodney W. Grimes db_single_step_cmd(addr, have_addr, count, modif) 3095b81b6b3SRodney W. Grimes db_expr_t addr; 310058284fcSBruce Evans boolean_t have_addr; 3115b81b6b3SRodney W. Grimes db_expr_t count; 3125b81b6b3SRodney W. Grimes char * modif; 3135b81b6b3SRodney W. Grimes { 3145b81b6b3SRodney W. Grimes boolean_t print = FALSE; 3155b81b6b3SRodney W. Grimes 3165b81b6b3SRodney W. Grimes if (count == -1) 3175b81b6b3SRodney W. Grimes count = 1; 3185b81b6b3SRodney W. Grimes 3195b81b6b3SRodney W. Grimes if (modif[0] == 'p') 3205b81b6b3SRodney W. Grimes print = TRUE; 3215b81b6b3SRodney W. Grimes 3225b81b6b3SRodney W. Grimes db_run_mode = STEP_ONCE; 3235b81b6b3SRodney W. Grimes db_loop_count = count; 3245b81b6b3SRodney W. Grimes db_sstep_print = print; 3255b81b6b3SRodney W. Grimes db_inst_count = 0; 3265b81b6b3SRodney W. Grimes db_load_count = 0; 3275b81b6b3SRodney W. Grimes db_store_count = 0; 3285b81b6b3SRodney W. Grimes 3295b81b6b3SRodney W. Grimes db_cmd_loop_done = 1; 3305b81b6b3SRodney W. Grimes } 3315b81b6b3SRodney W. Grimes 3325b81b6b3SRodney W. Grimes /* trace and print until call/return */ 3335b81b6b3SRodney W. Grimes /*ARGSUSED*/ 3345b81b6b3SRodney W. Grimes void 3355b81b6b3SRodney W. Grimes db_trace_until_call_cmd(addr, have_addr, count, modif) 3365b81b6b3SRodney W. Grimes db_expr_t addr; 337058284fcSBruce Evans boolean_t have_addr; 3385b81b6b3SRodney W. Grimes db_expr_t count; 3395b81b6b3SRodney W. Grimes char * modif; 3405b81b6b3SRodney W. Grimes { 3415b81b6b3SRodney W. Grimes boolean_t print = FALSE; 3425b81b6b3SRodney W. Grimes 3435b81b6b3SRodney W. Grimes if (modif[0] == 'p') 3445b81b6b3SRodney W. Grimes print = TRUE; 3455b81b6b3SRodney W. Grimes 3465b81b6b3SRodney W. Grimes db_run_mode = STEP_CALLT; 3475b81b6b3SRodney W. Grimes db_sstep_print = print; 3485b81b6b3SRodney W. Grimes db_inst_count = 0; 3495b81b6b3SRodney W. Grimes db_load_count = 0; 3505b81b6b3SRodney W. Grimes db_store_count = 0; 3515b81b6b3SRodney W. Grimes 3525b81b6b3SRodney W. Grimes db_cmd_loop_done = 1; 3535b81b6b3SRodney W. Grimes } 3545b81b6b3SRodney W. Grimes 3555b81b6b3SRodney W. Grimes /*ARGSUSED*/ 3565b81b6b3SRodney W. Grimes void 3575b81b6b3SRodney W. Grimes db_trace_until_matching_cmd(addr, have_addr, count, modif) 3585b81b6b3SRodney W. Grimes db_expr_t addr; 359058284fcSBruce Evans boolean_t have_addr; 3605b81b6b3SRodney W. Grimes db_expr_t count; 3615b81b6b3SRodney W. Grimes char * modif; 3625b81b6b3SRodney W. Grimes { 3635b81b6b3SRodney W. Grimes boolean_t print = FALSE; 3645b81b6b3SRodney W. Grimes 3655b81b6b3SRodney W. Grimes if (modif[0] == 'p') 3665b81b6b3SRodney W. Grimes print = TRUE; 3675b81b6b3SRodney W. Grimes 3685b81b6b3SRodney W. Grimes db_run_mode = STEP_RETURN; 3695b81b6b3SRodney W. Grimes db_call_depth = 1; 3705b81b6b3SRodney W. Grimes db_sstep_print = print; 3715b81b6b3SRodney W. Grimes db_inst_count = 0; 3725b81b6b3SRodney W. Grimes db_load_count = 0; 3735b81b6b3SRodney W. Grimes db_store_count = 0; 3745b81b6b3SRodney W. Grimes 3755b81b6b3SRodney W. Grimes db_cmd_loop_done = 1; 3765b81b6b3SRodney W. Grimes } 3775b81b6b3SRodney W. Grimes 3785b81b6b3SRodney W. Grimes /* continue */ 3795b81b6b3SRodney W. Grimes /*ARGSUSED*/ 3805b81b6b3SRodney W. Grimes void 3815b81b6b3SRodney W. Grimes db_continue_cmd(addr, have_addr, count, modif) 3825b81b6b3SRodney W. Grimes db_expr_t addr; 383058284fcSBruce Evans boolean_t have_addr; 3845b81b6b3SRodney W. Grimes db_expr_t count; 3855b81b6b3SRodney W. Grimes char * modif; 3865b81b6b3SRodney W. Grimes { 3875b81b6b3SRodney W. Grimes if (modif[0] == 'c') 3885b81b6b3SRodney W. Grimes db_run_mode = STEP_COUNT; 3895b81b6b3SRodney W. Grimes else 3905b81b6b3SRodney W. Grimes db_run_mode = STEP_CONTINUE; 3915b81b6b3SRodney W. Grimes db_inst_count = 0; 3925b81b6b3SRodney W. Grimes db_load_count = 0; 3935b81b6b3SRodney W. Grimes db_store_count = 0; 3945b81b6b3SRodney W. Grimes 3955b81b6b3SRodney W. Grimes db_cmd_loop_done = 1; 3965b81b6b3SRodney W. Grimes } 397