projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| d8be300a DF |
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 | */ | |
| 0acacf05 | 6 | |
| d8be300a | 7 | #ifndef lint |
| 82d3cd01 | 8 | static char sccsid[] = "@(#)bp.c 5.2 (Berkeley) %G%"; |
| d8be300a | 9 | #endif not lint |
| 0acacf05 ML |
10 | |
| 11 | /* | |
| 12 | * Direct management of bpinfo structures. | |
| 13 | */ | |
| 14 | ||
| 15 | #include "defs.h" | |
| 16 | #include "breakpoint.h" | |
| 17 | #include "tree.h" | |
| 18 | #include "sym.h" | |
| 19 | #include "main.h" | |
| 20 | #include "source.h" | |
| 21 | #include "object.h" | |
| 22 | #include "bp.rep" | |
| 23 | ||
| 24 | unsigned int uniqueid; | |
| 25 | ||
| 26 | /* | |
| 27 | * Add a breakpoint to the list, return a pointer to it. | |
| 28 | */ | |
| 29 | ||
| 30 | BPINFO *newbp(addr, type, block, cond, node, line) | |
| 31 | ADDRESS addr; | |
| 32 | BPTYPE type; | |
| 33 | SYM *block; | |
| 34 | NODE *cond; | |
| 35 | NODE *node; | |
| 36 | LINENO line; | |
| 37 | { | |
| 38 | register BPINFO *p; | |
| 39 | ||
| 40 | p = alloc(1, BPINFO); | |
| 41 | p->bpid = ++uniqueid; | |
| 42 | p->bpaddr = addr; | |
| 43 | p->bptype = type; | |
| 44 | p->bpblock = block; | |
| 45 | p->bpcond = cond; | |
| 46 | p->bpnode = node; | |
| 47 | p->bpline = line; | |
| 48 | p->bpnext = bphead; | |
| 49 | if (option('b')) { | |
| 50 | printf("new bp (%d) at %d, type %d\n", p->bpid, p->bpaddr, p->bptype); | |
| 51 | fflush(stdout); | |
| 52 | } | |
| 53 | bphead = p; | |
| 54 | return(p); | |
| 55 | } | |
| 56 | ||
| 57 | /* | |
| 58 | * Add a breakpoint, but don't return anything. | |
| 59 | * Just for folks outside of "breakpoint" who don't know that | |
| 60 | * a BPINFO exists. | |
| 61 | */ | |
| 62 | ||
| 63 | addbp(addr, type, block, cond, node, line) | |
| 64 | ADDRESS addr; | |
| 65 | BPTYPE type; | |
| 66 | SYM *block; | |
| 67 | NODE *cond; | |
| 68 | NODE *node; | |
| 69 | LINENO line; | |
| 70 | { | |
| 0acacf05 | 71 | |
| 82d3cd01 | 72 | (void) newbp(addr, type, block, cond, node, line); |
| 0acacf05 ML |
73 | } |
| 74 | ||
| 75 | /* | |
| 76 | * Delete a breakpoint. | |
| 77 | * | |
| 78 | * Print out a cryptic error message if it can't be found. | |
| 79 | */ | |
| 80 | ||
| 81 | delbp(id) | |
| 82 | unsigned int id; | |
| 83 | { | |
| 84 | register BPINFO *p, *last; | |
| 85 | ||
| 86 | last = NIL; | |
| 87 | for (p = bphead; p != NIL; p = p->bpnext) { | |
| 88 | if (p->bpid == id) { | |
| 89 | break; | |
| 90 | } | |
| 91 | last = p; | |
| 92 | } | |
| 93 | if (p == NIL) { | |
| 94 | error("%d unknown", id); | |
| 95 | } | |
| 96 | switch (p->bptype) { | |
| 97 | case ALL_ON: | |
| 98 | if (p->bpline >= 0) { | |
| 99 | tracing--; | |
| 100 | } else { | |
| 101 | inst_tracing--; | |
| 102 | } | |
| 103 | break; | |
| 104 | ||
| 105 | case STOP_ON: | |
| 106 | var_tracing--; | |
| 107 | break; | |
| 108 | ||
| 109 | default: | |
| 110 | /* do nothing */ | |
| 111 | break; | |
| 112 | } | |
| 113 | if (last == NIL) { | |
| 114 | bphead = p->bpnext; | |
| 115 | } else { | |
| 116 | last->bpnext = p->bpnext; | |
| 117 | } | |
| 118 | tfree(p->bpcond); | |
| 119 | tfree(p->bpnode); | |
| 120 | dispose(p); | |
| 121 | } | |
| 122 | ||
| 123 | /* | |
| 124 | * Free all storage in the breakpoint table. | |
| 125 | */ | |
| 126 | ||
| 127 | bpfree() | |
| 128 | { | |
| 129 | register BPINFO *p, *next; | |
| 130 | ||
| 131 | fixbps(); | |
| 132 | for (p = bphead; p != NIL; p = next) { | |
| 133 | next = p->bpnext; | |
| 134 | tfree(p->bpcond); | |
| 135 | tfree(p->bpnode); | |
| 136 | dispose(p); | |
| 137 | } | |
| 138 | bphead = NIL; | |
| 139 | } |