You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
static void fetch_register ();
-/* This function simply calls ptrace with the given arguments.
- It exists so that all calls to ptrace are isolated in this
- machine-dependent file. */
-int
-call_ptrace (request, pid, addr, data)
- int request, pid;
- PTRACE_ARG3_TYPE addr;
- int data;
-{
- return ptrace (request, pid, addr, data, 0);
-}
-
-void
-kill_inferior ()
-{
- if (inferior_pid == 0)
- return;
- ptrace (PT_EXIT, inferior_pid, (PTRACE_ARG3_TYPE) 0, 0, 0);
- wait ((int *)0);
- target_mourn_inferior ();
-}
-
-/* Start debugging the process whose number is PID. */
-int
-attach (pid)
- int pid;
-{
- errno = 0;
- ptrace (PT_ATTACH, pid, (PTRACE_ARG3_TYPE) 0, 0, 0);
- if (errno)
- perror_with_name ("ptrace");
- attach_flag = 1;
- return pid;
-}
-
-/* Stop debugging the process whose number is PID
- and continue it with signal number SIGNAL.
- SIGNAL = 0 means just continue it. */
-
-void
-detach (signal)
- int signal;
-{
- errno = 0;
- ptrace (PT_DETACH, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
- if (errno)
- perror_with_name ("ptrace");
- attach_flag = 0;
-}
-
-/* Fetch all registers, or just one, from the child process. */
-
void
fetch_inferior_registers (regno)
int regno;
if (regno >= 0)
{
+ if (CANNOT_STORE_REGISTER (regno))
+ return;
regaddr = register_addr (regno, offset);
errno = 0;
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
scratch, 0);
if (errno != 0)
{
+ /* Error, even if attached. Failing to write these two
+ registers is pretty serious. */
sprintf (buf, "writing register number %d", regno);
perror_with_name (buf);
}
*(int *) ®isters[REGISTER_BYTE (regno) + i], 0);
if (errno != 0)
{
- sprintf (buf, "writing register number %d(%d)", regno, i);
- perror_with_name (buf);
+ /* Warning, not error, in case we are attached; sometimes the
+ kernel doesn't let us at the registers. */
+ char *err = safe_strerror (errno);
+ char *msg = alloca (strlen (err) + 128);
+ sprintf (msg, "writing register %s: %s",
+ reg_names[regno], err);
+ warning (msg);
+ return;
}
regaddr += sizeof(int);
}
}
else
- {
- for (regno = 0; regno < NUM_REGS; regno++)
- {
- if (CANNOT_STORE_REGISTER (regno))
- continue;
- regaddr = register_addr (regno, offset);
- errno = 0;
- if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
- {
- scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3;
- ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- scratch, 0);
- if (errno != 0)
- {
- sprintf (buf, "writing register number %d", regno);
- perror_with_name (buf);
- }
- }
- else
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
- {
- errno = 0;
- ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- *(int *) ®isters[REGISTER_BYTE (regno) + i], 0);
- if (errno != 0)
- {
- sprintf (buf, "writing register number %d(%d)", regno, i);
- perror_with_name (buf);
- }
- regaddr += sizeof(int);
- }
- }
- }
- return;
+ for (regno = 0; regno < NUM_REGS; regno++)
+ store_inferior_registers (regno);
}
/* Fetch one register. */
regaddr += sizeof (int);
if (errno != 0)
{
- sprintf (mess, "reading register %s (#%d)", reg_names[regno], regno);
- perror_with_name (mess);
+ /* Warning, not error, in case we are attached; sometimes the
+ kernel doesn't let us at the registers. */
+ char *err = safe_strerror (errno);
+ char *msg = alloca (strlen (err) + 128);
+ sprintf (msg, "reading register %s: %s", reg_names[regno], err);
+ warning (msg);
+ goto error_exit;
}
}
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
buf[3] &= ~0x3;
supply_register (regno, buf);
-}
-
-/* Resume execution of the inferior process.
- If STEP is nonzero, single-step it.
- If SIGNAL is nonzero, give it that signal. */
-
-void
-child_resume (step, signal)
- int step;
- int signal;
-{
- errno = 0;
-
- /* An address of (PTRACE_ARG3_TYPE) 1 tells ptrace to continue from where
- it was. (If GDB wanted it to start some other way, we have already
- written a new PC value to the child.) */
-
- if (step)
- ptrace (PT_SINGLE, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
- else
- ptrace (PT_CONTIN, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
-
- if (errno)
- perror_with_name ("ptrace");
+ error_exit:;
}
/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
/* Copy data to be written over corresponding part of buffer */
- bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
+ memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
/* Write the entire buffer. */
}
/* Copy appropriate bytes out of the buffer. */
- bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
+ memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
return len;
}
projects / deliverable / binutils-gdb.git / blobdiff