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- /* $Header$ */
- #include <stdio.h>
- #include <varargs.h>
- #include <assert.h>
- #include <alloc.h>
- #include <out.h>
- #include "operator.h"
- #include "position.h"
- #include "file.h"
- #include "idf.h"
- #include "tree.h"
- #include "message.h"
- #include "scope.h"
- #include "symbol.h"
- #include "langdep.h"
- extern FILE *db_out;
- extern t_lineno currline;
- extern long pointer_size;
- extern char *strrindex();
- p_tree run_command;
- /*VARARGS1*/
- p_tree
- mknode(va_alist)
- va_dcl
- {
- va_list ap;
- register p_tree p = new_tree();
- va_start(ap);
- {
- register int i, na;
- p->t_oper = va_arg(ap, int);
- switch(p->t_oper) {
- case OP_NAME:
- p->t_idf = va_arg(ap, struct idf *);
- p->t_str = va_arg(ap, char *);
- break;
- case OP_INTEGER:
- p->t_ival = va_arg(ap, long);
- break;
- case OP_AT:
- p->t_lino = va_arg(ap, long);
- p->t_filename = va_arg(ap, char *);
- break;
- case OP_NEXT:
- case OP_STEP:
- case OP_REGS:
- case OP_DELETE:
- case OP_RESTORE:
- p->t_ival = va_arg(ap, long);
- break;
- default:
- na = nargs(p->t_oper);
- assert(na <= MAXARGS);
- for (i = 0; i < na; i++) {
- p->t_args[i] = va_arg(ap, p_tree);
- }
- break;
- }
- }
- va_end(ap);
- return p;
- }
- freenode(p)
- register p_tree p;
- {
- register int na, i;
- if (! p) return;
- switch(p->t_oper) {
- case OP_NAME:
- case OP_INTEGER:
- case OP_AT:
- case OP_CONT:
- case OP_NEXT:
- case OP_STEP:
- case OP_REGS:
- case OP_DELETE:
- break;
- default:
- na = nargs(p->t_oper);
- assert(na <= MAXARGS);
- for (i = 0; i < na; i++) {
- freenode(p->t_args[i]);
- }
- break;
- }
- free_tree(p);
- }
- print_node(p, top_level)
- register p_tree p;
- {
- if (!p) return;
- switch(p->t_oper) {
- case OP_LIST:
- fputs("list ", db_out);
- if (p->t_args[0]) {
- print_node(p->t_args[0], 0);
- if (p->t_args[1]) {
- fputs(", ", db_out);
- print_node(p->t_args[1], 0);
- }
- }
- break;
- case OP_PRINT:
- fputs("print ", db_out);
- print_node(p->t_args[0], 0);
- break;
- case OP_FILE:
- fputs("file ", db_out);
- print_node(p->t_args[0], 0);
- break;
- case OP_DELETE:
- fprintf(db_out, "delete %d", p->t_ival);
- break;
- case OP_REGS:
- fprintf(db_out, "regs %d", p->t_ival);
- break;
- case OP_NEXT:
- fprintf(db_out, "next %d", p->t_ival);
- break;
- case OP_STEP:
- fprintf(db_out, "step %d", p->t_ival);
- break;
- case OP_STATUS:
- fputs("status", db_out);
- break;
- case OP_DUMP:
- fputs("dump ", db_out);
- print_position(p->t_address, 1);
- break;
- case OP_RESTORE:
- fprintf(db_out, "restore %d", p->t_ival);
- break;
- case OP_WHERE:
- fputs("where", db_out);
- break;
- case OP_CONT:
- fputs("cont", db_out);
- if (p->t_args[0]) {
- fprintf(db_out, " %d", p->t_args[0]->t_ival);
- }
- if (p->t_args[1]) {
- fputs(" ", db_out);
- print_node(p->t_args[1], 0);
- }
- break;
- case OP_WHEN:
- fputs("when ", db_out);
- if (p->t_address != NO_ADDR) {
- print_position(p->t_address, 1);
- }
- else print_node(p->t_args[0], 0);
- if (p->t_args[1]) {
- fputs(" if ", db_out);
- print_node(p->t_args[1], 0);
- }
- p = p->t_args[2];
- fputs(" { ", db_out);
- while (p->t_oper == OP_LINK) {
- print_node(p->t_args[0], 0);
- fputs("; ", db_out);
- p = p->t_args[1];
- }
- print_node(p, 0);
- fputs(" }", db_out);
- break;
- case OP_STOP:
- fputs("stop ", db_out);
- if (p->t_address != NO_ADDR) {
- print_position(p->t_address, 1);
- }
- else print_node(p->t_args[0], 0);
- if (p->t_args[1]) {
- fputs(" if ", db_out);
- print_node(p->t_args[1], 0);
- }
- break;
- case OP_TRACE:
- fputs("trace ", db_out);
- if (p->t_args[2]) {
- fputs("on ", db_out);
- print_node(p->t_args[2], 0);
- fputs(" ", db_out);
- }
- if (p->t_address != NO_ADDR) {
- print_position(p->t_address, 1);
- }
- else print_node(p->t_args[0], 0);
- if (p->t_args[1]) {
- fputs(" if ", db_out);
- print_node(p->t_args[1], 0);
- }
- break;
- case OP_AT:
- fprintf(db_out, "at \"%s\":%ld", p->t_filename, p->t_lino);
- break;
- case OP_IN:
- fputs("in ", db_out);
- print_node(p->t_args[0], 0);
- break;
- case OP_SELECT:
- print_node(p->t_args[0], 0);
- fputs("`", db_out);
- print_node(p->t_args[1], 0);
- break;
- case OP_NAME:
- fputs(p->t_str, db_out);
- break;
- case OP_INTEGER:
- fprintf(db_out, "%d", p->t_ival);
- break;
- }
- if (top_level) fputs("\n", db_out);
- }
- int
- repeatable(com)
- p_tree com;
- {
- switch(com->t_oper) {
- case OP_CONT:
- case OP_NEXT:
- case OP_STEP:
- case OP_LIST:
- case OP_STATUS:
- case OP_PRINT:
- return 1;
- }
- return 0;
- }
- int
- in_status(com)
- p_tree com;
- {
- switch(com->t_oper) {
- case OP_STOP:
- case OP_WHEN:
- case OP_TRACE:
- case OP_DUMP:
- return 1;
- }
- return 0;
- }
- eval(p)
- p_tree p;
- {
- if (p) (*operators[p->t_oper].op_fun)(p);
- }
- do_list(p)
- p_tree p;
- {
- if (currfile) {
- lines(currfile->sy_file,
- p->t_args[0] ? (int) p->t_args[0]->t_ival : (int) currline,
- p->t_args[1] ? (int) p->t_args[1]->t_ival : (int) currline+9);
- currline = p->t_args[1] ? p->t_args[1]->t_ival + 1 : currline + 10;
- }
- else fprintf(db_out, "no current file\n");
- }
- do_file(p)
- p_tree p;
- {
- if (p->t_args[0]) {
- newfile(p->t_args[0]->t_idf);
- }
- else if (currfile) fprintf(db_out, "%s\n", currfile->sy_idf->id_text);
- else fprintf(db_out, "no current file\n");
- }
- newfile(id)
- register struct idf *id;
- {
- register p_symbol sym = Lookup(id, PervasiveScope, FILESYM);
- if (currfile != sym) currline = 1;
- currfile = sym;
- if (! currfile) {
- currline = 1;
- currfile = add_file(id->id_text);
- currfile->sy_file->f_scope = FileScope;
- }
- find_language(strrindex(id->id_text, '.'));
- }
- static t_addr
- get_pos(p)
- p_tree p;
- {
- t_addr a = ILL_ADDR;
- register p_symbol sym;
- if (! p) return NO_ADDR;
- if (p->t_address != 0) return p->t_address;
- switch(p->t_oper) {
- case OP_AT:
- if (! p->t_filename &&
- (! currfile || ! (p->t_filename = currfile->sy_idf->id_text))) {
- error("no current file");
- break;
- }
- a = get_addr_from_position(&(p->t_pos));
- if (a == ILL_ADDR) {
- error("could not determine address of \"%s\":%d",
- p->t_filename, p->t_lino);
- break;
- }
- p->t_address = a;
- break;
-
- case OP_IN:
- a = get_pos(p->t_args[0]);
- p->t_address = a;
- break;
- case OP_NAME:
- case OP_SELECT:
- sym = identify(p, PROC|MODULE);
- if (! sym) {
- break;
- }
- if (! sym->sy_name.nm_scope || ! sym->sy_name.nm_scope->sc_bp_opp) {
- error("could not determine address of \"%s\"", p->t_str);
- break;
- }
- a = sym->sy_name.nm_scope->sc_bp_opp;
- break;
- default:
- assert(0);
- }
- return a;
- }
- do_stop(p)
- p_tree p;
- {
- t_addr a = get_pos(p->t_args[0]);
- if (a == ILL_ADDR) {
- return;
- }
- p->t_address = a;
- add_to_item_list(p);
- if (a != NO_ADDR) {
- if (! set_or_clear_breakpoint(a, SETBP)) {
- error("could not set breakpoint");
- }
- }
- }
- do_trace(p)
- p_tree p;
- {
- t_addr a;
- t_addr e;
- p->t_address = NO_ADDR;
- if (p->t_args[0]) {
- a = get_pos(p->t_args[0]);
- if (a == ILL_ADDR) return;
- if (p->t_args[0]->t_oper == OP_AT) {
- e = a;
- p->t_address = a;
- }
- else {
- p_scope sc = get_next_scope_from_addr(a+1);
- if (sc) e = sc->sc_start - 1;
- else e = 0xffffffff;
- }
- if (! set_or_clear_trace(a, e, SETTRACE)) {
- error("could not set trace");
- }
- }
- add_to_item_list(p);
- }
- do_continue(p)
- p_tree p;
- {
- int count;
- if (p) {
- count = p->t_args[0]->t_ival;
- if (p->t_args[1]) {
- t_addr a = get_addr_from_position(&(p->t_args[1]->t_pos));
- p_scope sc = get_scope_from_addr(a);
- if (a == ILL_ADDR || base_scope(sc) != base_scope(CurrentScope) ||
- ! set_pc(a)) {
- error("cannot continue at line %d",
- p->t_args[1]->t_lino);
- return;
- }
- }
- }
- else count = 1;
- while (count--) {
- if (! send_cont(count==0)) {
- error("no debuggee");
- break;
- }
- }
- }
- do_step(p)
- p_tree p;
- {
- if (! do_single_step(SETSS, p->t_ival)) {
- error("no debuggee");
- }
- }
- do_next(p)
- p_tree p;
- {
- if (! do_single_step(SETSSF, p->t_ival)) {
- error("no debuggee");
- }
- }
- extern t_addr *get_EM_regs();
- do_regs(p)
- p_tree p;
- {
- t_addr *buf;
- int n = p->t_ival;
- if (! (buf = get_EM_regs(n))) {
- error("no debuggee");
- return;
- }
- fprintf(db_out, "EM registers %d levels back:\n", n);
- fprintf(db_out, "\tLocalBase =\t0x%lx\n\tArgumentBase =\t0x%lx\n",
- (long) buf[LB_OFF], (long) buf[AB_OFF]);
- fprintf(db_out, "\tProgramCounter=\t0x%lx\n\tHeapPointer = \t0x%lx\n",
- (long) buf[PC_OFF],
- (long) buf[HP_OFF]);
- fprintf(db_out, "\tStackPointer =\t0x%lx\n", (long) buf[SP_OFF]);
- }
- /*ARGSUSED*/
- do_where(p)
- p_tree p;
- {
- int i = 0;
- for (;;) {
- t_addr AB;
- t_addr PC;
- p_scope sc;
- t_addr *buf;
- if (! (buf = get_EM_regs(i++))) {
- error("no debuggee");
- return;
- }
- AB = buf[AB_OFF];
- PC = buf[PC_OFF];
- if (! AB) break;
- sc = base_scope(get_scope_from_addr(PC));
- if (! sc || sc->sc_start > PC) break;
- fprintf(db_out, "%s(", sc->sc_definedby->sy_idf->id_text);
- print_params(sc->sc_definedby->sy_type, AB, has_static_link(sc));
- fputs(") ", db_out);
- print_position(PC, 0);
- fputs("\n", db_out);
- }
- }
- /*ARGSUSED*/
- do_status(p)
- p_tree p;
- {
- print_items();
- }
- extern p_tree remove_from_item_list();
- do_delete(p)
- p_tree p;
- {
- p = remove_from_item_list((int) p->t_ival);
- if (p) switch(p->t_oper) {
- case OP_WHEN:
- case OP_STOP: {
- t_addr a = get_pos(p->t_args[0]);
- if (a != ILL_ADDR && a != NO_ADDR) {
- set_or_clear_breakpoint(a, CLRBP);
- }
- break;
- }
- case OP_TRACE: {
- t_addr a = get_pos(p->t_args[0]);
-
- if (a != ILL_ADDR && a != NO_ADDR) {
- t_addr e;
- if (p->t_args[0]->t_oper == OP_AT) {
- e = a;
- }
- else {
- p_scope sc = get_next_scope_from_addr(a+1);
- if (sc) e = sc->sc_start - 1;
- else e = 0xffffffff;
- }
- set_or_clear_trace(a, e, CLRTRACE);
- }
- break;
- }
- case OP_DUMP:
- free_dump(p);
- }
- freenode(p);
- }
- do_print(p)
- p_tree p;
- {
- p_symbol sym;
- switch(p->t_oper) {
- case OP_PRINT:
- do_print(p->t_args[0]);
- break;
- case OP_LINK:
- do_print(p->t_args[0]);
- do_print(p->t_args[1]);
- break;
- case OP_NAME:
- case OP_SELECT:
- sym = identify(p, VAR|REGVAR|LOCVAR|VARPAR);
- if (! sym) return;
- print_node(p, 0);
- if (! print_sym(sym)) {
- fputs(" currently not available\n", db_out);
- break;
- }
- }
- }
- perform(p, a)
- register p_tree p;
- t_addr a;
- {
- switch(p->t_oper) {
- case OP_WHEN:
- p = p->t_args[2];
- while (p->t_oper == OP_LINK) {
- eval(p->t_args[0]);
- p = p->t_args[1];
- }
- eval(p);
- break;
- case OP_TRACE:
- if (p->t_args[0] && p->t_args[0]->t_oper == OP_IN) {
- register p_scope sc = base_scope(CurrentScope);
-
- if (sc != get_scope_from_addr(p->t_args[0]->t_address)) {
- break;
- }
- }
- {
- p_position pos = get_position_from_addr(a);
- newfile(str2idf(pos->filename, 1));
- currline = pos->lineno;
- lines(currfile->sy_file, (int)currline, (int)currline);
- if (p->t_args[2]) do_print(p->t_args[2]);
- }
- break;
- default:
- assert(0);
- }
- }
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