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support simple stack trace.

This commit is contained in:
sakamoto 1997-12-18 09:09:01 +00:00
parent e2f98dba9e
commit 73a2fb9659
1 changed files with 47 additions and 14 deletions
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61
sys/arch/bebox/bebox/db_trace.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: db_trace.c,v 1.2 1997/12/02 01:20:32 sakamoto Exp $ */
/* $NetBSD: db_trace.c,v 1.3 1997/12/18 09:09:01 sakamoto Exp $ */
/* $OpenBSD: db_trace.c,v 1.3 1997/03/21 02:10:48 niklas Exp $ */
/*
@ -31,12 +31,13 @@
#include <sys/proc.h>
#include <machine/db_machdep.h>
#include <machine/pmap.h>
#include <ddb/db_access.h>
#include <ddb/db_sym.h>
#include <ddb/db_variables.h>
struct db_variable db_regs[] = {
struct db_variable db_regs[] = {
{ "r1", (long *)&ddb_regs.r1, FCN_NULL },
{ "r2", (long *)&ddb_regs.r2, FCN_NULL },
{ "r3", (long *)&ddb_regs.r3, FCN_NULL },
@ -71,7 +72,7 @@ struct db_variable db_regs[] = {
{ "r32", (long *)&ddb_regs.r32, FCN_NULL },
{ "iar", (long *)&ddb_regs.iar, FCN_NULL },
};
struct db_variable *db_eregs = db_regs + sizeof(db_regs)/sizeof(db_regs[0]);
struct db_variable *db_eregs = db_regs + sizeof (db_regs)/sizeof (db_regs[0]);
extern label_t *db_recover;
@ -80,17 +81,49 @@ extern label_t *db_recover;
*/
void
db_stack_trace_cmd(addr, have_addr, count, modif)
db_expr_t addr;
int have_addr;
db_expr_t count;
char *modif;
db_expr_t addr;
int have_addr;
db_expr_t count;
char *modif;
{
int i, val, nargs, spa;
db_addr_t regp;
char * name;
boolean_t kernel_only = TRUE;
boolean_t trace_thread = FALSE;
db_addr_t frame, lr, caller;
db_expr_t diff;
db_sym_t sym;
char *symname;
boolean_t kernel_only = TRUE;
boolean_t trace_thread = FALSE;
db_printf("not supported");
{
register char *cp = modif;
register char c;
while ((c = *cp++) != 0) {
if (c == 't')
trace_thread = TRUE;
if (c == 'u')
kernel_only = FALSE;
}
}
if (count == -1)
count = 65535;
frame = (db_addr_t)ddb_regs.r1;
while ((frame = *(db_addr_t *)frame) && count--) {
lr = *(db_addr_t *)(frame + 4) - 4;
if (lr & 3) {
db_printf("saved LR(0x%x) is invalid.", lr);
break;
}
if ((caller = (db_addr_t)vtophys(lr)) == 0)
caller = lr;
diff = 0;
symname = NULL;
sym = db_search_symbol(caller, DB_STGY_ANY, &diff);
db_symbol_values(sym, &symname, 0);
if (symname == NULL)
symname = "?";
db_printf("at %s+%x\n", symname, diff);
}
}