projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 0acacf05 ML |
1 | /* Copyright (c) 1982 Regents of the University of California */ |
| 2 | ||
| 3 | static char sccsid[] = "@(#)bp.c 1.1 %G%"; | |
| 4 | ||
| 5 | /* | |
| 6 | * Direct management of bpinfo structures. | |
| 7 | */ | |
| 8 | ||
| 9 | #include "defs.h" | |
| 10 | #include "breakpoint.h" | |
| 11 | #include "tree.h" | |
| 12 | #include "sym.h" | |
| 13 | #include "main.h" | |
| 14 | #include "source.h" | |
| 15 | #include "object.h" | |
| 16 | #include "bp.rep" | |
| 17 | ||
| 18 | unsigned int uniqueid; | |
| 19 | ||
| 20 | /* | |
| 21 | * Add a breakpoint to the list, return a pointer to it. | |
| 22 | */ | |
| 23 | ||
| 24 | BPINFO *newbp(addr, type, block, cond, node, line) | |
| 25 | ADDRESS addr; | |
| 26 | BPTYPE type; | |
| 27 | SYM *block; | |
| 28 | NODE *cond; | |
| 29 | NODE *node; | |
| 30 | LINENO line; | |
| 31 | { | |
| 32 | register BPINFO *p; | |
| 33 | ||
| 34 | p = alloc(1, BPINFO); | |
| 35 | p->bpid = ++uniqueid; | |
| 36 | p->bpaddr = addr; | |
| 37 | p->bptype = type; | |
| 38 | p->bpblock = block; | |
| 39 | p->bpcond = cond; | |
| 40 | p->bpnode = node; | |
| 41 | p->bpline = line; | |
| 42 | p->bpnext = bphead; | |
| 43 | if (option('b')) { | |
| 44 | printf("new bp (%d) at %d, type %d\n", p->bpid, p->bpaddr, p->bptype); | |
| 45 | fflush(stdout); | |
| 46 | } | |
| 47 | bphead = p; | |
| 48 | return(p); | |
| 49 | } | |
| 50 | ||
| 51 | /* | |
| 52 | * Add a breakpoint, but don't return anything. | |
| 53 | * Just for folks outside of "breakpoint" who don't know that | |
| 54 | * a BPINFO exists. | |
| 55 | */ | |
| 56 | ||
| 57 | addbp(addr, type, block, cond, node, line) | |
| 58 | ADDRESS addr; | |
| 59 | BPTYPE type; | |
| 60 | SYM *block; | |
| 61 | NODE *cond; | |
| 62 | NODE *node; | |
| 63 | LINENO line; | |
| 64 | { | |
| 65 | BPINFO *p; | |
| 66 | ||
| 67 | p = newbp(addr, type, block, cond, node, line); | |
| 68 | } | |
| 69 | ||
| 70 | /* | |
| 71 | * Delete a breakpoint. | |
| 72 | * | |
| 73 | * Print out a cryptic error message if it can't be found. | |
| 74 | */ | |
| 75 | ||
| 76 | delbp(id) | |
| 77 | unsigned int id; | |
| 78 | { | |
| 79 | register BPINFO *p, *last; | |
| 80 | ||
| 81 | last = NIL; | |
| 82 | for (p = bphead; p != NIL; p = p->bpnext) { | |
| 83 | if (p->bpid == id) { | |
| 84 | break; | |
| 85 | } | |
| 86 | last = p; | |
| 87 | } | |
| 88 | if (p == NIL) { | |
| 89 | error("%d unknown", id); | |
| 90 | } | |
| 91 | switch (p->bptype) { | |
| 92 | case ALL_ON: | |
| 93 | if (p->bpline >= 0) { | |
| 94 | tracing--; | |
| 95 | } else { | |
| 96 | inst_tracing--; | |
| 97 | } | |
| 98 | break; | |
| 99 | ||
| 100 | case STOP_ON: | |
| 101 | var_tracing--; | |
| 102 | break; | |
| 103 | ||
| 104 | default: | |
| 105 | /* do nothing */ | |
| 106 | break; | |
| 107 | } | |
| 108 | if (last == NIL) { | |
| 109 | bphead = p->bpnext; | |
| 110 | } else { | |
| 111 | last->bpnext = p->bpnext; | |
| 112 | } | |
| 113 | tfree(p->bpcond); | |
| 114 | tfree(p->bpnode); | |
| 115 | dispose(p); | |
| 116 | } | |
| 117 | ||
| 118 | /* | |
| 119 | * Free all storage in the breakpoint table. | |
| 120 | */ | |
| 121 | ||
| 122 | bpfree() | |
| 123 | { | |
| 124 | register BPINFO *p, *next; | |
| 125 | ||
| 126 | fixbps(); | |
| 127 | for (p = bphead; p != NIL; p = next) { | |
| 128 | next = p->bpnext; | |
| 129 | tfree(p->bpcond); | |
| 130 | tfree(p->bpnode); | |
| 131 | dispose(p); | |
| 132 | } | |
| 133 | bphead = NIL; | |
| 134 | } |