52 lines
881 B
C
52 lines
881 B
C
/*
|
|
* trace.c for mdb
|
|
*/
|
|
|
|
#include "mdb.h"
|
|
#include <stdio.h>
|
|
#include <sys/ptrace.h>
|
|
#include "proto.h"
|
|
|
|
/* mdbtrace()
|
|
* Call ptrace and check for error if debugging running process
|
|
* Otherwise read 'core' file
|
|
*/
|
|
long mdbtrace(req, pid, addr, data)
|
|
int req, pid;
|
|
long addr, data;
|
|
{
|
|
long val;
|
|
int i;
|
|
int segment;
|
|
|
|
#ifdef DEBUG
|
|
if (debug) Printf("ptrace: req=%d pid=%d addr=%lx data=%lx\n",
|
|
req, pid, addr, data);
|
|
#endif
|
|
|
|
if (corepid < 0)
|
|
{
|
|
errno = 0;
|
|
/* Call normal ptrace and check for error */
|
|
val = ptrace(req, pid, addr, data);
|
|
if (errno != 0) {
|
|
do_error("mdb ptrace error ");
|
|
mdb_error("\n");
|
|
}
|
|
#ifdef DEBUG
|
|
if (debug) Printf("ptrace: val=>%lx\n", val);
|
|
#endif
|
|
return val;
|
|
}
|
|
else
|
|
return read_core(req, addr, data);
|
|
}
|
|
|
|
/* Used by disassembler */
|
|
u32_t peek_dword(addr)
|
|
off_t addr;
|
|
{
|
|
return mdbtrace(T_GETINS, curpid, addr, 0L);
|
|
}
|
|
|