projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 505bf312 KB |
1 | /*- |
| 2 | * Copyright (c) 1980 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * %sccs.include.redist.c% | |
| d8be300a | 6 | */ |
| 0acacf05 | 7 | |
| d8be300a | 8 | #ifndef lint |
| 505bf312 KB |
9 | static char sccsid[] = "@(#)bp.c 5.3 (Berkeley) %G%"; |
| 10 | #endif /* not lint */ | |
| 0acacf05 ML |
11 | |
| 12 | /* | |
| 13 | * Direct management of bpinfo structures. | |
| 14 | */ | |
| 15 | ||
| 16 | #include "defs.h" | |
| 17 | #include "breakpoint.h" | |
| 18 | #include "tree.h" | |
| 19 | #include "sym.h" | |
| 20 | #include "main.h" | |
| 21 | #include "source.h" | |
| 22 | #include "object.h" | |
| 23 | #include "bp.rep" | |
| 24 | ||
| 25 | unsigned int uniqueid; | |
| 26 | ||
| 27 | /* | |
| 28 | * Add a breakpoint to the list, return a pointer to it. | |
| 29 | */ | |
| 30 | ||
| 31 | BPINFO *newbp(addr, type, block, cond, node, line) | |
| 32 | ADDRESS addr; | |
| 33 | BPTYPE type; | |
| 34 | SYM *block; | |
| 35 | NODE *cond; | |
| 36 | NODE *node; | |
| 37 | LINENO line; | |
| 38 | { | |
| 39 | register BPINFO *p; | |
| 40 | ||
| 41 | p = alloc(1, BPINFO); | |
| 42 | p->bpid = ++uniqueid; | |
| 43 | p->bpaddr = addr; | |
| 44 | p->bptype = type; | |
| 45 | p->bpblock = block; | |
| 46 | p->bpcond = cond; | |
| 47 | p->bpnode = node; | |
| 48 | p->bpline = line; | |
| 49 | p->bpnext = bphead; | |
| 50 | if (option('b')) { | |
| 51 | printf("new bp (%d) at %d, type %d\n", p->bpid, p->bpaddr, p->bptype); | |
| 52 | fflush(stdout); | |
| 53 | } | |
| 54 | bphead = p; | |
| 55 | return(p); | |
| 56 | } | |
| 57 | ||
| 58 | /* | |
| 59 | * Add a breakpoint, but don't return anything. | |
| 60 | * Just for folks outside of "breakpoint" who don't know that | |
| 61 | * a BPINFO exists. | |
| 62 | */ | |
| 63 | ||
| 64 | addbp(addr, type, block, cond, node, line) | |
| 65 | ADDRESS addr; | |
| 66 | BPTYPE type; | |
| 67 | SYM *block; | |
| 68 | NODE *cond; | |
| 69 | NODE *node; | |
| 70 | LINENO line; | |
| 71 | { | |
| 0acacf05 | 72 | |
| 82d3cd01 | 73 | (void) newbp(addr, type, block, cond, node, line); |
| 0acacf05 ML |
74 | } |
| 75 | ||
| 76 | /* | |
| 77 | * Delete a breakpoint. | |
| 78 | * | |
| 79 | * Print out a cryptic error message if it can't be found. | |
| 80 | */ | |
| 81 | ||
| 82 | delbp(id) | |
| 83 | unsigned int id; | |
| 84 | { | |
| 85 | register BPINFO *p, *last; | |
| 86 | ||
| 87 | last = NIL; | |
| 88 | for (p = bphead; p != NIL; p = p->bpnext) { | |
| 89 | if (p->bpid == id) { | |
| 90 | break; | |
| 91 | } | |
| 92 | last = p; | |
| 93 | } | |
| 94 | if (p == NIL) { | |
| 95 | error("%d unknown", id); | |
| 96 | } | |
| 97 | switch (p->bptype) { | |
| 98 | case ALL_ON: | |
| 99 | if (p->bpline >= 0) { | |
| 100 | tracing--; | |
| 101 | } else { | |
| 102 | inst_tracing--; | |
| 103 | } | |
| 104 | break; | |
| 105 | ||
| 106 | case STOP_ON: | |
| 107 | var_tracing--; | |
| 108 | break; | |
| 109 | ||
| 110 | default: | |
| 111 | /* do nothing */ | |
| 112 | break; | |
| 113 | } | |
| 114 | if (last == NIL) { | |
| 115 | bphead = p->bpnext; | |
| 116 | } else { | |
| 117 | last->bpnext = p->bpnext; | |
| 118 | } | |
| 119 | tfree(p->bpcond); | |
| 120 | tfree(p->bpnode); | |
| 121 | dispose(p); | |
| 122 | } | |
| 123 | ||
| 124 | /* | |
| 125 | * Free all storage in the breakpoint table. | |
| 126 | */ | |
| 127 | ||
| 128 | bpfree() | |
| 129 | { | |
| 130 | register BPINFO *p, *next; | |
| 131 | ||
| 132 | fixbps(); | |
| 133 | for (p = bphead; p != NIL; p = next) { | |
| 134 | next = p->bpnext; | |
| 135 | tfree(p->bpcond); | |
| 136 | tfree(p->bpnode); | |
| 137 | dispose(p); | |
| 138 | } | |
| 139 | bphead = NIL; | |
| 140 | } |