1dd3cb568SWarner Losh /*- 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. 255b81b6b3SRodney W. Grimes */ 265b81b6b3SRodney W. Grimes /* 275b81b6b3SRodney W. Grimes * Author: David B. Golub, Carnegie Mellon University 285b81b6b3SRodney W. Grimes * Date: 7/90 295b81b6b3SRodney W. Grimes */ 305b81b6b3SRodney W. Grimes 315b81b6b3SRodney W. Grimes /* 325b81b6b3SRodney W. Grimes * Commands to run process. 335b81b6b3SRodney W. Grimes */ 34753960f7SDavid E. O'Brien 35753960f7SDavid E. O'Brien #include <sys/cdefs.h> 36753960f7SDavid E. O'Brien __FBSDID("$FreeBSD$"); 37753960f7SDavid E. O'Brien 38f540b106SGarrett Wollman #include <sys/param.h> 3937224cd3SMarcel Moolenaar #include <sys/kdb.h> 4020984f2fSPeter Wemm #include <sys/proc.h> 4137224cd3SMarcel Moolenaar 4237224cd3SMarcel Moolenaar #include <machine/kdb.h> 4337224cd3SMarcel Moolenaar #include <machine/pcb.h> 445b81b6b3SRodney W. Grimes 455ccbc3ccSBruce Evans #include <vm/vm.h> 465ccbc3ccSBruce Evans 475ccbc3ccSBruce Evans #include <ddb/ddb.h> 485b81b6b3SRodney W. Grimes #include <ddb/db_break.h> 495b81b6b3SRodney W. Grimes #include <ddb/db_access.h> 505b81b6b3SRodney W. Grimes 5125eb640dSPoul-Henning Kamp static int db_run_mode; 525b81b6b3SRodney W. Grimes #define STEP_NONE 0 535b81b6b3SRodney W. Grimes #define STEP_ONCE 1 545b81b6b3SRodney W. Grimes #define STEP_RETURN 2 555b81b6b3SRodney W. Grimes #define STEP_CALLT 3 565b81b6b3SRodney W. Grimes #define STEP_CONTINUE 4 575b81b6b3SRodney W. Grimes #define STEP_INVISIBLE 5 585b81b6b3SRodney W. Grimes #define STEP_COUNT 6 595b81b6b3SRodney W. Grimes 60cd508278SPedro F. Giffuni static bool db_sstep_print; 6125eb640dSPoul-Henning Kamp static int db_loop_count; 6225eb640dSPoul-Henning Kamp static int db_call_depth; 635b81b6b3SRodney W. Grimes 645b81b6b3SRodney W. Grimes int db_inst_count; 655b81b6b3SRodney W. Grimes int db_load_count; 665b81b6b3SRodney W. Grimes int db_store_count; 675b81b6b3SRodney W. Grimes 68cdf23c19SZbigniew Bodek #ifdef SOFTWARE_SSTEP 69cdf23c19SZbigniew Bodek db_breakpoint_t db_not_taken_bkpt = 0; 70cdf23c19SZbigniew Bodek db_breakpoint_t db_taken_bkpt = 0; 71cdf23c19SZbigniew Bodek #endif 72cdf23c19SZbigniew Bodek 735b81b6b3SRodney W. Grimes #ifndef db_set_single_step 7437224cd3SMarcel Moolenaar void db_set_single_step(void); 755b81b6b3SRodney W. Grimes #endif 765b81b6b3SRodney W. Grimes #ifndef db_clear_single_step 7737224cd3SMarcel Moolenaar void db_clear_single_step(void); 78f73a856dSPoul-Henning Kamp #endif 79cdf23c19SZbigniew Bodek #ifndef db_pc_is_singlestep 80cdf23c19SZbigniew Bodek static bool 81cdf23c19SZbigniew Bodek db_pc_is_singlestep(db_addr_t pc) 82cdf23c19SZbigniew Bodek { 8375f88c7cSOlivier Houchard #ifdef SOFTWARE_SSTEP 84cdf23c19SZbigniew Bodek if ((db_not_taken_bkpt != 0 && pc == db_not_taken_bkpt->address) 85cdf23c19SZbigniew Bodek || (db_taken_bkpt != 0 && pc == db_taken_bkpt->address)) 86cdf23c19SZbigniew Bodek return (true); 87cdf23c19SZbigniew Bodek #endif 88cdf23c19SZbigniew Bodek return (false); 89cdf23c19SZbigniew Bodek } 9075f88c7cSOlivier Houchard #endif 9175f88c7cSOlivier Houchard 92cd508278SPedro F. Giffuni bool 93cd508278SPedro F. Giffuni db_stop_at_pc(bool *is_breakpoint) 945b81b6b3SRodney W. Grimes { 950a95ab74SPedro F. Giffuni db_addr_t pc; 960a95ab74SPedro F. Giffuni db_breakpoint_t bkpt; 975b81b6b3SRodney W. Grimes 9875f88c7cSOlivier Houchard pc = PC_REGS(); 99cdf23c19SZbigniew Bodek 100cdf23c19SZbigniew Bodek if (db_pc_is_singlestep(pc)) 1012b490bc7SPedro F. Giffuni *is_breakpoint = false; 10275f88c7cSOlivier Houchard 10337224cd3SMarcel Moolenaar db_clear_single_step(); 1045b81b6b3SRodney W. Grimes db_clear_breakpoints(); 1055b81b6b3SRodney W. Grimes db_clear_watchpoints(); 1065b81b6b3SRodney W. Grimes 1075b81b6b3SRodney W. Grimes #ifdef FIXUP_PC_AFTER_BREAK 1085b81b6b3SRodney W. Grimes if (*is_breakpoint) { 1095b81b6b3SRodney W. Grimes /* 1105b81b6b3SRodney W. Grimes * Breakpoint trap. Fix up the PC if the 1115b81b6b3SRodney W. Grimes * machine requires it. 1125b81b6b3SRodney W. Grimes */ 1135b81b6b3SRodney W. Grimes FIXUP_PC_AFTER_BREAK 11437224cd3SMarcel Moolenaar pc = PC_REGS(); 1155b81b6b3SRodney W. Grimes } 1165b81b6b3SRodney W. Grimes #endif 1175b81b6b3SRodney W. Grimes 1185b81b6b3SRodney W. Grimes /* 1195b81b6b3SRodney W. Grimes * Now check for a breakpoint at this address. 1205b81b6b3SRodney W. Grimes */ 1215b81b6b3SRodney W. Grimes bkpt = db_find_breakpoint_here(pc); 1225b81b6b3SRodney W. Grimes if (bkpt) { 1235b81b6b3SRodney W. Grimes if (--bkpt->count == 0) { 1245b81b6b3SRodney W. Grimes bkpt->count = bkpt->init_count; 1252b490bc7SPedro F. Giffuni *is_breakpoint = true; 1262b490bc7SPedro F. Giffuni return (true); /* stop here */ 1275b81b6b3SRodney W. Grimes } 1285b81b6b3SRodney W. Grimes } else if (*is_breakpoint) { 1293a0b4f25SDoug Rabson #ifdef BKPT_SKIP 1303a0b4f25SDoug Rabson BKPT_SKIP; 131ecbb00a2SDoug Rabson #endif 1325b81b6b3SRodney W. Grimes } 1335b81b6b3SRodney W. Grimes 1342b490bc7SPedro F. Giffuni *is_breakpoint = false; 1355b81b6b3SRodney W. Grimes 1365b81b6b3SRodney W. Grimes if (db_run_mode == STEP_INVISIBLE) { 1375b81b6b3SRodney W. Grimes db_run_mode = STEP_CONTINUE; 1382b490bc7SPedro F. Giffuni return (false); /* continue */ 1395b81b6b3SRodney W. Grimes } 1405b81b6b3SRodney W. Grimes if (db_run_mode == STEP_COUNT) { 1412b490bc7SPedro F. Giffuni return (false); /* continue */ 1425b81b6b3SRodney W. Grimes } 1435b81b6b3SRodney W. Grimes if (db_run_mode == STEP_ONCE) { 1445b81b6b3SRodney W. Grimes if (--db_loop_count > 0) { 1455b81b6b3SRodney W. Grimes if (db_sstep_print) { 1465b81b6b3SRodney W. Grimes db_printf("\t\t"); 1475b81b6b3SRodney W. Grimes db_print_loc_and_inst(pc); 1485b81b6b3SRodney W. Grimes db_printf("\n"); 1495b81b6b3SRodney W. Grimes } 1502b490bc7SPedro F. Giffuni return (false); /* continue */ 1515b81b6b3SRodney W. Grimes } 1525b81b6b3SRodney W. Grimes } 1535b81b6b3SRodney W. Grimes if (db_run_mode == STEP_RETURN) { 1545b81b6b3SRodney W. Grimes /* continue until matching return */ 15553b3e912SMaxime Henrion db_expr_t ins; 1565b81b6b3SRodney W. Grimes 1572b490bc7SPedro F. Giffuni ins = db_get_value(pc, sizeof(int), false); 1585b81b6b3SRodney W. Grimes if (!inst_trap_return(ins) && 1595b81b6b3SRodney W. Grimes (!inst_return(ins) || --db_call_depth != 0)) { 1605b81b6b3SRodney W. Grimes if (db_sstep_print) { 1615b81b6b3SRodney W. Grimes if (inst_call(ins) || inst_return(ins)) { 1620a95ab74SPedro F. Giffuni int i; 1635b81b6b3SRodney W. Grimes 1645b81b6b3SRodney W. Grimes db_printf("[after %6d] ", db_inst_count); 1655b81b6b3SRodney W. Grimes for (i = db_call_depth; --i > 0; ) 1665b81b6b3SRodney W. Grimes db_printf(" "); 1675b81b6b3SRodney W. Grimes db_print_loc_and_inst(pc); 1685b81b6b3SRodney W. Grimes db_printf("\n"); 1695b81b6b3SRodney W. Grimes } 1705b81b6b3SRodney W. Grimes } 1715b81b6b3SRodney W. Grimes if (inst_call(ins)) 1725b81b6b3SRodney W. Grimes db_call_depth++; 1732b490bc7SPedro F. Giffuni return (false); /* continue */ 1745b81b6b3SRodney W. Grimes } 1755b81b6b3SRodney W. Grimes } 1765b81b6b3SRodney W. Grimes if (db_run_mode == STEP_CALLT) { 1775b81b6b3SRodney W. Grimes /* continue until call or return */ 17853b3e912SMaxime Henrion db_expr_t ins; 1795b81b6b3SRodney W. Grimes 1802b490bc7SPedro F. Giffuni ins = db_get_value(pc, sizeof(int), false); 1815b81b6b3SRodney W. Grimes if (!inst_call(ins) && 1825b81b6b3SRodney W. Grimes !inst_return(ins) && 1835b81b6b3SRodney W. Grimes !inst_trap_return(ins)) { 1842b490bc7SPedro F. Giffuni return (false); /* continue */ 1855b81b6b3SRodney W. Grimes } 1865b81b6b3SRodney W. Grimes } 1875b81b6b3SRodney W. Grimes db_run_mode = STEP_NONE; 1882b490bc7SPedro F. Giffuni return (true); 1895b81b6b3SRodney W. Grimes } 1905b81b6b3SRodney W. Grimes 1915b81b6b3SRodney W. Grimes void 192cd508278SPedro F. Giffuni db_restart_at_pc(bool watchpt) 1935b81b6b3SRodney W. Grimes { 1940a95ab74SPedro F. Giffuni db_addr_t pc = PC_REGS(); 1955b81b6b3SRodney W. Grimes 1965b81b6b3SRodney W. Grimes if ((db_run_mode == STEP_COUNT) || 1975b81b6b3SRodney W. Grimes (db_run_mode == STEP_RETURN) || 1985b81b6b3SRodney W. Grimes (db_run_mode == STEP_CALLT)) { 1995b81b6b3SRodney W. Grimes /* 2005b81b6b3SRodney W. Grimes * We are about to execute this instruction, 2015b81b6b3SRodney W. Grimes * so count it now. 2025b81b6b3SRodney W. Grimes */ 203c6cb86ccSWarner Losh #ifdef SOFTWARE_SSTEP 204c6cb86ccSWarner Losh db_expr_t ins = 205c6cb86ccSWarner Losh #endif 2062b490bc7SPedro F. Giffuni db_get_value(pc, sizeof(int), false); 2075b81b6b3SRodney W. Grimes db_inst_count++; 2085b81b6b3SRodney W. Grimes db_load_count += inst_load(ins); 2095b81b6b3SRodney W. Grimes db_store_count += inst_store(ins); 2105b81b6b3SRodney W. Grimes #ifdef SOFTWARE_SSTEP 2115b81b6b3SRodney W. Grimes /* XXX works on mips, but... */ 2125b81b6b3SRodney W. Grimes if (inst_branch(ins) || inst_call(ins)) { 2135b81b6b3SRodney W. Grimes ins = db_get_value(next_instr_address(pc,1), 2142b490bc7SPedro F. Giffuni sizeof(int), false); 2155b81b6b3SRodney W. Grimes db_inst_count++; 2165b81b6b3SRodney W. Grimes db_load_count += inst_load(ins); 2175b81b6b3SRodney W. Grimes db_store_count += inst_store(ins); 2185b81b6b3SRodney W. Grimes } 21968016904SDavid E. O'Brien #endif /* SOFTWARE_SSTEP */ 2205b81b6b3SRodney W. Grimes } 2215b81b6b3SRodney W. Grimes 2225b81b6b3SRodney W. Grimes if (db_run_mode == STEP_CONTINUE) { 2235b81b6b3SRodney W. Grimes if (watchpt || db_find_breakpoint_here(pc)) { 2245b81b6b3SRodney W. Grimes /* 2255b81b6b3SRodney W. Grimes * Step over breakpoint/watchpoint. 2265b81b6b3SRodney W. Grimes */ 2275b81b6b3SRodney W. Grimes db_run_mode = STEP_INVISIBLE; 22837224cd3SMarcel Moolenaar db_set_single_step(); 2295b81b6b3SRodney W. Grimes } else { 2305b81b6b3SRodney W. Grimes db_set_breakpoints(); 2315b81b6b3SRodney W. Grimes db_set_watchpoints(); 2325b81b6b3SRodney W. Grimes } 2335b81b6b3SRodney W. Grimes } else { 23437224cd3SMarcel Moolenaar db_set_single_step(); 2355b81b6b3SRodney W. Grimes } 2365b81b6b3SRodney W. Grimes } 2375b81b6b3SRodney W. Grimes 2385b81b6b3SRodney W. Grimes #ifdef SOFTWARE_SSTEP 2395b81b6b3SRodney W. Grimes /* 2405b81b6b3SRodney W. Grimes * Software implementation of single-stepping. 2415b81b6b3SRodney W. Grimes * If your machine does not have a trace mode 2425b81b6b3SRodney W. Grimes * similar to the vax or sun ones you can use 2435b81b6b3SRodney W. Grimes * this implementation, done for the mips. 2445b81b6b3SRodney W. Grimes * Just define the above conditional and provide 2455b81b6b3SRodney W. Grimes * the functions/macros defined below. 2465b81b6b3SRodney W. Grimes * 247cd508278SPedro F. Giffuni * extern bool 2485b81b6b3SRodney W. Grimes * inst_branch(), returns true if the instruction might branch 2495b81b6b3SRodney W. Grimes * extern unsigned 2505b81b6b3SRodney W. Grimes * branch_taken(), return the address the instruction might 2515b81b6b3SRodney W. Grimes * branch to 2525b81b6b3SRodney W. Grimes * db_getreg_val(); return the value of a user register, 2535b81b6b3SRodney W. Grimes * as indicated in the hardware instruction 2545b81b6b3SRodney W. Grimes * encoding, e.g. 8 for r8 2555b81b6b3SRodney W. Grimes * 2565b81b6b3SRodney W. Grimes * next_instr_address(pc,bd) returns the address of the first 2575b81b6b3SRodney W. Grimes * instruction following the one at "pc", 2585b81b6b3SRodney W. Grimes * which is either in the taken path of 2595b81b6b3SRodney W. Grimes * the branch (bd==1) or not. This is 2605b81b6b3SRodney W. Grimes * for machines (mips) with branch delays. 2615b81b6b3SRodney W. Grimes * 2625b81b6b3SRodney W. Grimes * A single-step may involve at most 2 breakpoints - 2635b81b6b3SRodney W. Grimes * one for branch-not-taken and one for branch taken. 2645b81b6b3SRodney W. Grimes * If one of these addresses does not already have a breakpoint, 2655b81b6b3SRodney W. Grimes * we allocate a breakpoint and save it here. 2665b81b6b3SRodney W. Grimes * These breakpoints are deleted on return. 2675b81b6b3SRodney W. Grimes */ 2685b81b6b3SRodney W. Grimes 2695b81b6b3SRodney W. Grimes void 27037224cd3SMarcel Moolenaar db_set_single_step(void) 2715b81b6b3SRodney W. Grimes { 27237224cd3SMarcel Moolenaar db_addr_t pc = PC_REGS(), brpc; 2737045d394SDoug Rabson unsigned inst; 2745b81b6b3SRodney W. Grimes 2755b81b6b3SRodney W. Grimes /* 2765b81b6b3SRodney W. Grimes * User was stopped at pc, e.g. the instruction 2775b81b6b3SRodney W. Grimes * at pc was not executed. 2785b81b6b3SRodney W. Grimes */ 2792b490bc7SPedro F. Giffuni inst = db_get_value(pc, sizeof(int), false); 28008cfba5dSOlivier Houchard if (inst_branch(inst) || inst_call(inst) || inst_return(inst)) { 28137224cd3SMarcel Moolenaar brpc = branch_taken(inst, pc); 2825b81b6b3SRodney W. Grimes if (brpc != pc) { /* self-branches are hopeless */ 2835b81b6b3SRodney W. Grimes db_taken_bkpt = db_set_temp_breakpoint(brpc); 2845b81b6b3SRodney W. Grimes } 2855b81b6b3SRodney W. Grimes pc = next_instr_address(pc, 1); 2865b81b6b3SRodney W. Grimes } 2875b81b6b3SRodney W. Grimes pc = next_instr_address(pc, 0); 2885b81b6b3SRodney W. Grimes db_not_taken_bkpt = db_set_temp_breakpoint(pc); 2895b81b6b3SRodney W. Grimes } 2905b81b6b3SRodney W. Grimes 2915b81b6b3SRodney W. Grimes void 29237224cd3SMarcel Moolenaar db_clear_single_step(void) 2935b81b6b3SRodney W. Grimes { 2945b81b6b3SRodney W. Grimes 2955b81b6b3SRodney W. Grimes if (db_not_taken_bkpt != 0) { 2965b81b6b3SRodney W. Grimes db_delete_temp_breakpoint(db_not_taken_bkpt); 2975b81b6b3SRodney W. Grimes db_not_taken_bkpt = 0; 2985b81b6b3SRodney W. Grimes } 29946e5fdffSDoug Rabson if (db_taken_bkpt != 0) { 30046e5fdffSDoug Rabson db_delete_temp_breakpoint(db_taken_bkpt); 30146e5fdffSDoug Rabson db_taken_bkpt = 0; 30246e5fdffSDoug Rabson } 3035b81b6b3SRodney W. Grimes } 3045b81b6b3SRodney W. Grimes 30568016904SDavid E. O'Brien #endif /* SOFTWARE_SSTEP */ 3065b81b6b3SRodney W. Grimes 3075b81b6b3SRodney W. Grimes extern int db_cmd_loop_done; 3085b81b6b3SRodney W. Grimes 3095b81b6b3SRodney W. Grimes /* single-step */ 3105b81b6b3SRodney W. Grimes /*ARGSUSED*/ 3115b81b6b3SRodney W. Grimes void 312cd508278SPedro F. Giffuni db_single_step_cmd(db_expr_t addr, bool have_addr, db_expr_t count, char *modif) 3135b81b6b3SRodney W. Grimes { 314cd508278SPedro F. Giffuni bool 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') 3202b490bc7SPedro F. Giffuni 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 335cd508278SPedro F. Giffuni db_trace_until_call_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 336a41dd031SPedro F. Giffuni char *modif) 3375b81b6b3SRodney W. Grimes { 338cd508278SPedro F. Giffuni bool print = false; 3395b81b6b3SRodney W. Grimes 3405b81b6b3SRodney W. Grimes if (modif[0] == 'p') 3412b490bc7SPedro F. Giffuni print = true; 3425b81b6b3SRodney W. Grimes 3435b81b6b3SRodney W. Grimes db_run_mode = STEP_CALLT; 3445b81b6b3SRodney W. Grimes db_sstep_print = print; 3455b81b6b3SRodney W. Grimes db_inst_count = 0; 3465b81b6b3SRodney W. Grimes db_load_count = 0; 3475b81b6b3SRodney W. Grimes db_store_count = 0; 3485b81b6b3SRodney W. Grimes 3495b81b6b3SRodney W. Grimes db_cmd_loop_done = 1; 3505b81b6b3SRodney W. Grimes } 3515b81b6b3SRodney W. Grimes 3525b81b6b3SRodney W. Grimes /*ARGSUSED*/ 3535b81b6b3SRodney W. Grimes void 354cd508278SPedro F. Giffuni db_trace_until_matching_cmd(db_expr_t addr, bool have_addr, db_expr_t count, 355cd508278SPedro F. Giffuni char *modif) 3565b81b6b3SRodney W. Grimes { 357cd508278SPedro F. Giffuni bool print = false; 3585b81b6b3SRodney W. Grimes 3595b81b6b3SRodney W. Grimes if (modif[0] == 'p') 3602b490bc7SPedro F. Giffuni print = true; 3615b81b6b3SRodney W. Grimes 3625b81b6b3SRodney W. Grimes db_run_mode = STEP_RETURN; 3635b81b6b3SRodney W. Grimes db_call_depth = 1; 3645b81b6b3SRodney W. Grimes db_sstep_print = print; 3655b81b6b3SRodney W. Grimes db_inst_count = 0; 3665b81b6b3SRodney W. Grimes db_load_count = 0; 3675b81b6b3SRodney W. Grimes db_store_count = 0; 3685b81b6b3SRodney W. Grimes 3695b81b6b3SRodney W. Grimes db_cmd_loop_done = 1; 3705b81b6b3SRodney W. Grimes } 3715b81b6b3SRodney W. Grimes 3725b81b6b3SRodney W. Grimes /* continue */ 3735b81b6b3SRodney W. Grimes /*ARGSUSED*/ 3745b81b6b3SRodney W. Grimes void 375cd508278SPedro F. Giffuni db_continue_cmd(db_expr_t addr, bool have_addr, db_expr_t count, char *modif) 3765b81b6b3SRodney W. Grimes { 3775b81b6b3SRodney W. Grimes if (modif[0] == 'c') 3785b81b6b3SRodney W. Grimes db_run_mode = STEP_COUNT; 3795b81b6b3SRodney W. Grimes else 3805b81b6b3SRodney W. Grimes db_run_mode = STEP_CONTINUE; 3815b81b6b3SRodney W. Grimes db_inst_count = 0; 3825b81b6b3SRodney W. Grimes db_load_count = 0; 3835b81b6b3SRodney W. Grimes db_store_count = 0; 3845b81b6b3SRodney W. Grimes 3855b81b6b3SRodney W. Grimes db_cmd_loop_done = 1; 3865b81b6b3SRodney W. Grimes } 387