1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 * 6 * @(#)breakpoint.h 5.1 (Berkeley) 06/06/85 7 */ 8 9 /* 10 * Breakpoint module definitions. 11 * 12 * This module contains routines that manage breakpoints at a high level. 13 * This includes adding and deleting breakpoints, handling the various 14 * types of breakpoints when they happen, management of conditions for 15 * breakpoints, and display information after single stepping. 16 */ 17 18 unsigned short tracing; 19 unsigned short var_tracing; 20 unsigned short inst_tracing; 21 22 BOOLEAN isstopped; 23 24 #define ss_lines (tracing != 0) 25 #define ss_variables (var_tracing != 0) 26 #define ss_instructions (inst_tracing != 0) 27 #define single_stepping (ss_lines || ss_variables || ss_instructions) 28 29 /* 30 * types of breakpoints 31 */ 32 33 typedef enum { 34 ALL_ON, /* turn TRACE on */ 35 ALL_OFF, /* turn TRACE off */ 36 INST, /* trace instruction (source line) */ 37 CALL, RETURN, /* trace procedure/function */ 38 BLOCK_ON, /* set CALL breakpoint */ 39 BLOCK_OFF, /* clear CALL breakpoint */ 40 TERM_ON, /* turn TRACEVAR on */ 41 TERM_OFF, /* turn TRACEVAR off */ 42 AT_BP, /* print expression at a line */ 43 STOP_BP, /* stop execution */ 44 CALLPROC, /* return from a "call"-ed procedure */ 45 END_BP, /* return from program */ 46 STOP_ON, /* start looking for stop condition */ 47 STOP_OFF, /* stop looking for stop condition */ 48 } BPTYPE; 49 50 /* 51 * Things that are on the tracing or condition list are either 52 * associated with the trace (implying printing) or stop commands. 53 */ 54 55 typedef enum { TRPRINT, TRSTOP } TRTYPE; 56 57 /* 58 * routines available from this module 59 */ 60 61 addvar(); /* add a variable to the trace list */ 62 delvar(); /* delete a variable from the trace list */ 63 printvarnews(); /* print out variables that have changed */ 64 trfree(); /* free the entire trace list */ 65 addcond(); /* add a condition to the list */ 66 delcond(); /* delete a condition from the list */ 67 BOOLEAN trcond(); /* determine if any trace condition is true */ 68 BOOLEAN stopcond(); /* determine if any stop condition is true */ 69 70 addbp(); /* add a breakpoint */ 71 delbp(); /* delete a breakpoint, return FALSE if unsuccessful */ 72 bpfree(); /* free all breakpoint information */ 73 setallbps(); /* set traps for all breakpoints */ 74 unsetallbps(); /* remove traps at all breakpoints */ 75 BOOLEAN bpact(); /* handle a breakpoint */ 76 fixbps(); /* destroy temporary breakpoints left after a fault */ 77 status(); /* list items being traced */ 78