/* Native support code for HPUX PA-RISC.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1998
+ Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1998, 1999
Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include "defs.h"
#include <sys/ptrace.h>
#include "gdbcore.h"
#include <wait.h>
+#include <signal.h>
extern CORE_ADDR text_end;
fetch_register (regno);
}
+/* Our own version of the offsetof macro, since we can't assume ANSI C. */
+#define HPPAH_OFFSETOF(type, member) ((int) (&((type *) 0)->member))
+
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
{
register unsigned int regaddr;
char buf[80];
- extern char registers[];
register int i;
unsigned int offset = U_REGS_OFFSET;
int scratch;
if (regno >= 0)
{
+ unsigned int addr, len, offset;
+
if (CANNOT_STORE_REGISTER (regno))
return;
- regaddr = register_addr (regno, offset);
- errno = 0;
- if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
- {
- scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3;
- call_ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- scratch);
- 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);
- }
- }
+
+ offset = 0;
+ len = REGISTER_RAW_SIZE (regno);
+
+ /* Requests for register zero actually want the save_state's
+ ss_flags member. As RM says: "Oh, what a hack!" */
+ if (regno == 0)
+ {
+ save_state_t ss;
+ addr = HPPAH_OFFSETOF (save_state_t, ss_flags);
+ len = sizeof (ss.ss_flags);
+
+ /* Note that ss_flags is always an int, no matter what
+ REGISTER_RAW_SIZE(0) says. Assuming all HP-UX PA machines
+ are big-endian, put it at the least significant end of the
+ value, and zap the rest of the buffer. */
+ offset = REGISTER_RAW_SIZE (0) - len;
+ }
+
+ /* Floating-point registers come from the ss_fpblock area. */
+ else if (regno >= FP0_REGNUM)
+ addr = (HPPAH_OFFSETOF (save_state_t, ss_fpblock)
+ + (REGISTER_BYTE (regno) - REGISTER_BYTE (FP0_REGNUM)));
+
+ /* Wide registers come from the ss_wide area.
+ I think it's more PC to test (ss_flags & SS_WIDEREGS) to select
+ between ss_wide and ss_narrow than to use the raw register size.
+ But checking ss_flags would require an extra ptrace call for
+ every register reference. Bleah. */
+ else if (len == 8)
+ addr = (HPPAH_OFFSETOF (save_state_t, ss_wide)
+ + REGISTER_BYTE (regno));
+
+ /* Narrow registers come from the ss_narrow area. Note that
+ ss_narrow starts with gr1, not gr0. */
+ else if (len == 4)
+ addr = (HPPAH_OFFSETOF (save_state_t, ss_narrow)
+ + (REGISTER_BYTE (regno) - REGISTER_BYTE (1)));
else
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
- {
- errno = 0;
- call_ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- *(int *) ®isters[REGISTER_BYTE (regno) + i]);
- if (errno != 0)
- {
- /* 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",
- REGISTER_NAME (regno), err);
+ internal_error ("hppah-nat.c (write_register): unexpected register size");
+
+#ifdef GDB_TARGET_IS_HPPA_20W
+ /* Unbelieveable. The PC head and tail must be written in 64bit hunks
+ or we will get an error. Worse yet, the oddball ptrace/ttrace
+ layering will not allow us to perform a 64bit register store.
+
+ What a crock. */
+ if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM && len == 8)
+ {
+ CORE_ADDR temp;
+
+ temp = *(CORE_ADDR *)®isters[REGISTER_BYTE (regno)];
+
+ /* Set the priv level (stored in the low two bits of the PC. */
+ temp |= 0x3;
+
+ ttrace_write_reg_64 (inferior_pid, (CORE_ADDR)addr, (CORE_ADDR)&temp);
+
+ /* If we fail to write the PC, give a true error instead of
+ just a warning. */
+ if (errno != 0)
+ {
+ char *err = safe_strerror (errno);
+ char *msg = alloca (strlen (err) + 128);
+ sprintf (msg, "writing `%s' register: %s",
+ REGISTER_NAME (regno), err);
+ perror_with_name (msg);
+ }
+ return;
+ }
+
+ /* Another crock. HPUX complains if you write a nonzero value to
+ the high part of IPSW. What will it take for HP to catch a
+ clue about building sensible interfaces? */
+ if (regno == IPSW_REGNUM && len == 8)
+ *(int *)®isters[REGISTER_BYTE (regno)] = 0;
+#endif
+
+ for (i = 0; i < len; i += sizeof (int))
+ {
+ errno = 0;
+ call_ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) addr + i,
+ *(int *) ®isters[REGISTER_BYTE (regno) + i]);
+ if (errno != 0)
+ {
+ /* 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 `%s' register: %s",
+ REGISTER_NAME (regno), err);
+ /* If we fail to write the PC, give a true error instead of
+ just a warning. */
+ if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
+ perror_with_name (msg);
+ else
warning (msg);
- return;
- }
- regaddr += sizeof(int);
- }
+ return;
+ }
+ }
}
else
for (regno = 0; regno < NUM_REGS; regno++)
store_inferior_registers (regno);
}
-/* Fetch one register. */
+/* Fetch a register's value from the process's U area. */
static void
fetch_register (regno)
int regno;
{
- register unsigned int regaddr;
char buf[MAX_REGISTER_RAW_SIZE];
- register int i;
+ unsigned int addr, len, offset;
+ int i;
- /* Offset of registers within the u area. */
- unsigned int offset;
+ offset = 0;
+ len = REGISTER_RAW_SIZE (regno);
- offset = U_REGS_OFFSET;
+ /* Requests for register zero actually want the save_state's
+ ss_flags member. As RM says: "Oh, what a hack!" */
+ if (regno == 0)
+ {
+ save_state_t ss;
+ addr = HPPAH_OFFSETOF (save_state_t, ss_flags);
+ len = sizeof (ss.ss_flags);
+
+ /* Note that ss_flags is always an int, no matter what
+ REGISTER_RAW_SIZE(0) says. Assuming all HP-UX PA machines
+ are big-endian, put it at the least significant end of the
+ value, and zap the rest of the buffer. */
+ offset = REGISTER_RAW_SIZE (0) - len;
+ memset (buf, 0, sizeof (buf));
+ }
- regaddr = register_addr (regno, offset);
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
+ /* Floating-point registers come from the ss_fpblock area. */
+ else if (regno >= FP0_REGNUM)
+ addr = (HPPAH_OFFSETOF (save_state_t, ss_fpblock)
+ + (REGISTER_BYTE (regno) - REGISTER_BYTE (FP0_REGNUM)));
+
+ /* Wide registers come from the ss_wide area.
+ I think it's more PC to test (ss_flags & SS_WIDEREGS) to select
+ between ss_wide and ss_narrow than to use the raw register size.
+ But checking ss_flags would require an extra ptrace call for
+ every register reference. Bleah. */
+ else if (len == 8)
+ addr = (HPPAH_OFFSETOF (save_state_t, ss_wide)
+ + REGISTER_BYTE (regno));
+
+ /* Narrow registers come from the ss_narrow area. Note that
+ ss_narrow starts with gr1, not gr0. */
+ else if (len == 4)
+ addr = (HPPAH_OFFSETOF (save_state_t, ss_narrow)
+ + (REGISTER_BYTE (regno) - REGISTER_BYTE (1)));
+
+ else
+ internal_error ("hppa-nat.c (fetch_register): unexpected register size");
+
+ for (i = 0; i < len; i += sizeof (int))
{
errno = 0;
- *(int *) &buf[i] = call_ptrace (PT_RUREGS, inferior_pid,
- (PTRACE_ARG3_TYPE) regaddr, 0);
- regaddr += sizeof (int);
+ /* Copy an int from the U area to buf. Fill the least
+ significant end if len != raw_size. */
+ * (int *) &buf[offset + i] =
+ call_ptrace (PT_RUREGS, inferior_pid,
+ (PTRACE_ARG3_TYPE) addr + i, 0);
if (errno != 0)
{
- /* Warning, not error, in case we are attached; sometimes the
- * kernel doesn't let us at the registers.
- */
+ /* 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", REGISTER_NAME (regno), err);
+ sprintf (msg, "reading `%s' register: %s",
+ REGISTER_NAME (regno), err);
warning (msg);
- goto error_exit;
+ return;
}
}
+
+ /* If we're reading an address from the instruction address queue,
+ mask out the bottom two bits --- they contain the privilege
+ level. */
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
- buf[3] &= ~0x3;
+ buf[len - 1] &= ~0x3;
+
supply_register (regno, buf);
- error_exit:;
}
+
/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
to debugger memory starting at MYADDR. Copy to inferior if
WRITE is nonzero.
-
+
Returns the length copied, which is either the LEN argument or zero.
This xfer function does not do partial moves, since child_ops
doesn't allow memory operations to cross below us in the target stack
char *myaddr;
int len;
int write;
- struct target_ops *target; /* ignored */
+ struct target_ops *target; /* ignored */
{
register int i;
/* Round starting address down to longword boundary. */
- register CORE_ADDR addr = memaddr & - sizeof (int);
+ register CORE_ADDR addr = memaddr & - (CORE_ADDR)(sizeof (int));
/* Round ending address up; get number of longwords that makes. */
register int count
- = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
-
- /* Allocate buffer of that many longwords. */
- /* Note (RT) - This code formerly used alloca, which I have
- * replaced with xmalloc and a matching free() at the end.
- * The problem with alloca() is that there is no guarantee of
- * when it'll be freed, and we were seeing cases of memory
- * leaks on:
- * (gdb) watch x
- * (gdb) cont
- * where the piled-up alloca's for the child_xfer_memory buffers
- * were not getting freed.
- */
+ = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
+
+ /* Allocate buffer of that many longwords.
+ Note -- do not use alloca to allocate this buffer since there is no
+ guarantee of when the buffer will actually be deallocated.
+
+ This routine can be called over and over with the same call chain;
+ this (in effect) would pile up all those alloca requests until a call
+ to alloca was made from a point higher than this routine in the
+ call chain. */
register int *buffer = (int *) xmalloc (count * sizeof (int));
if (write)
{
/* Fill start and end extra bytes of buffer with existing memory data. */
-
- if (addr != memaddr || len < (int)sizeof (int)) {
- /* Need part of initial word -- fetch it. */
- buffer[0] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
- inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
- }
+ if (addr != memaddr || len < (int) sizeof (int))
+ {
+ /* Need part of initial word -- fetch it. */
+ buffer[0] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
+ inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
+ }
if (count > 1) /* FIXME, avoid if even boundary */
{
buffer[count - 1]
- = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER, inferior_pid,
- (PTRACE_ARG3_TYPE) (addr + (count - 1) * sizeof (int)),
- 0);
+ = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
+ inferior_pid,
+ (PTRACE_ARG3_TYPE) (addr
+ + (count - 1) * sizeof (int)),
+ 0);
}
/* Copy data to be written over corresponding part of buffer */
-
memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
/* Write the entire buffer. */
-
for (i = 0; i < count; i++, addr += sizeof (int))
{
- int pt_status;
- int pt_request;
- /* The HP-UX kernel crashes if you use PT_WDUSER to write into the text
- segment. FIXME -- does it work to write into the data segment using
- WIUSER, or do these idiots really expect us to figure out which segment
- the address is in, so we can use a separate system call for it??! */
+ int pt_status;
+ int pt_request;
+ /* The HP-UX kernel crashes if you use PT_WDUSER to write into the
+ text segment. FIXME -- does it work to write into the data
+ segment using WIUSER, or do these idiots really expect us to
+ figure out which segment the address is in, so we can use a
+ separate system call for it??! */
errno = 0;
- pt_request = (addr < text_end) ? PT_WIUSER : PT_WDUSER;
+ pt_request = (addr < text_end) ? PT_WIUSER : PT_WDUSER;
pt_status = call_ptrace (pt_request,
- inferior_pid,
- (PTRACE_ARG3_TYPE) addr,
- buffer[i]);
-
- /* Did we fail? Might we've guessed wrong about which
- segment this address resides in? Try the other request,
- and see if that works...
- */
- if ((pt_status == -1) && errno) {
- errno = 0;
- pt_request = (pt_request == PT_WIUSER) ? PT_WDUSER : PT_WIUSER;
- pt_status = call_ptrace (pt_request,
- inferior_pid,
- (PTRACE_ARG3_TYPE) addr,
- buffer[i]);
-
- /* No, we still fail. Okay, time to punt. */
- if ((pt_status == -1) && errno)
- {
- free(buffer);
- return 0;
- }
- }
+ inferior_pid,
+ (PTRACE_ARG3_TYPE) addr,
+ buffer[i]);
+
+ /* Did we fail? Might we've guessed wrong about which
+ segment this address resides in? Try the other request,
+ and see if that works... */
+ if ((pt_status == -1) && errno)
+ {
+ errno = 0;
+ pt_request = (pt_request == PT_WIUSER) ? PT_WDUSER : PT_WIUSER;
+ pt_status = call_ptrace (pt_request,
+ inferior_pid,
+ (PTRACE_ARG3_TYPE) addr,
+ buffer[i]);
+
+ /* No, we still fail. Okay, time to punt. */
+ if ((pt_status == -1) && errno)
+ {
+ free (buffer);
+ return 0;
+ }
+ }
}
}
else
for (i = 0; i < count; i++, addr += sizeof (int))
{
errno = 0;
- buffer[i] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
- inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
- if (errno) {
- free(buffer);
- return 0;
- }
+ buffer[i] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
+ inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
+ if (errno)
+ {
+ free (buffer);
+ return 0;
+ }
QUIT;
}
/* Copy appropriate bytes out of the buffer. */
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
- free(buffer);
+ free (buffer);
return len;
}
void
child_post_follow_inferior_by_clone ()
{
- int status;
+ int status;
/* This function is used when following both the parent and child
of a fork. In this case, the debugger clones itself. The original
void
child_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child)
- int parent_pid;
- int followed_parent;
- int child_pid;
- int followed_child;
+ int parent_pid;
+ int followed_parent;
+ int child_pid;
+ int followed_child;
{
-
/* Are we a debugger that followed the parent of a vfork? If so,
then recall that the child's vfork event was delivered to us
first. And, that the parent was suspended by the OS until the
/* Are we a debugger that followed the child of a vfork? If so,
then recall that we don't actually acquire control of the child
- until after it has exec'd or exited.
- */
+ until after it has exec'd or exited. */
if (followed_child)
{
/* If the child has exited, then there's nothing for us to do.
In the case of an exec event, we'll let that be handled by
the normal mechanism that notices and handles exec events, in
resume(). */
-
}
}
-/* Format a process id, given a pid. Be sure to terminate
- * this with a null--it's going to be printed via a "%s".
- */
+/* Format a process id, given PID. Be sure to terminate
+ this with a null--it's going to be printed via a "%s". */
char *
-hppa_pid_to_str( pid )
- pid_t pid;
+child_pid_to_str (pid)
+ pid_t pid;
{
- static char buf[30]; /* Static because address returned */
+ /* Static because address returned */
+ static char buf[30];
- sprintf( buf, "process %d\0\0\0\0", pid );
- /* Extra NULLs for paranoia's sake */
-
- return buf;
+ /* Extra NULLs for paranoia's sake */
+ sprintf (buf, "process %d\0\0\0\0", pid);
+
+ return buf;
}
-/* Format a thread id, given a tid. Be sure to terminate
- * this with a null--it's going to be printed via a "%s".
- *
- * Note: This is a core-gdb tid, not the actual system tid.
- * See infttrace.c for details.
- */
+/* Format a thread id, given TID. Be sure to terminate
+ this with a null--it's going to be printed via a "%s".
+
+ Note: This is a core-gdb tid, not the actual system tid.
+ See infttrace.c for details. */
char *
-hppa_tid_to_str( tid )
- pid_t tid;
+hppa_tid_to_str (tid)
+ pid_t tid;
{
- static char buf[30]; /* Static because address returned */
+ /* Static because address returned */
+ static char buf[30];
- sprintf( buf, "system thread %d\0\0\0\0", tid );
- /* Extra NULLs for paranoia's sake */
-
- return buf;
+ /* Extra NULLs for paranoia's sake */
+ sprintf (buf, "system thread %d\0\0\0\0", tid);
+
+ return buf;
}
#if !defined (GDB_NATIVE_HPUX_11)
after a fork(), and before an exec() by the child. See
parent_attach_all for details. */
-typedef struct {
- int parent_channel[2]; /* Parent "talks" to [1], child "listens" to [0] */
- int child_channel[2]; /* Child "talks" to [1], parent "listens" to [0] */
-} startup_semaphore_t;
+typedef struct
+{
+ int parent_channel[2]; /* Parent "talks" to [1], child "listens" to [0] */
+ int child_channel[2]; /* Child "talks" to [1], parent "listens" to [0] */
+}
+startup_semaphore_t;
#define SEM_TALK (1)
#define SEM_LISTEN (0)
-static startup_semaphore_t startup_semaphore;
+static startup_semaphore_t startup_semaphore;
extern int parent_attach_all PARAMS ((int, PTRACE_ARG3_TYPE, int));
/* Notify the parent that we're potentially ready to exec(). */
write (startup_semaphore.child_channel[SEM_TALK],
- &tc_magic_child,
- sizeof (tc_magic_child));
+ &tc_magic_child,
+ sizeof (tc_magic_child));
/* Wait for acknowledgement from the parent. */
read (startup_semaphore.parent_channel[SEM_LISTEN],
- &tc_magic_parent,
- sizeof (tc_magic_parent));
+ &tc_magic_parent,
+ sizeof (tc_magic_parent));
if (tc_magic_child != tc_magic_parent)
- warning ("mismatched semaphore magic");
+ warning ("mismatched semaphore magic");
/* Discard our copy of the semaphore. */
(void) close (startup_semaphore.parent_channel[SEM_LISTEN]);
(void) close (startup_semaphore.child_channel[SEM_LISTEN]);
(void) close (startup_semaphore.child_channel[SEM_TALK]);
#endif
-
+
return 0;
}
#endif
int pid;
{
int pt_status;
- CORE_ADDR pc;
- CORE_ADDR pc_addr;
+ CORE_ADDR pc;
+ CORE_ADDR pc_addr;
unsigned int regs_offset;
/* Are we already attached? There appears to be no explicit way to
pt_status = call_ptrace (PT_ATTACH, pid, (PTRACE_ARG3_TYPE) 0, 0);
if (errno)
- return -1;
+ return -1;
/* Now we really are attached. */
errno = 0;
int
hppa_require_detach (pid, signal)
- int pid;
- int signal;
+ int pid;
+ int signal;
{
errno = 0;
call_ptrace (PT_DETACH, pid, (PTRACE_ARG3_TYPE) 1, signal);
- errno = 0; /* Ignore any errors. */
+ errno = 0; /* Ignore any errors. */
return pid;
}
pid_t id;
{
/* In the ptrace world, there are only processes. */
- return hppa_pid_to_str (id);
+ return child_pid_to_str (id);
}
/* This function has no meaning in a non-threaded world. Thus, we
int
hppa_resume_execd_vforking_child_to_get_parent_vfork ()
{
- return 1; /* Yes, the child must be resumed. */
-}
-
-#if defined(HPPA_GET_PROCESS_EVENTS)
-process_event_vector
-hppa_get_process_events (pid, wait_status, must_continue_pid_after)
- int pid;
- int wait_status;
- int * must_continue_pid_after;
-{
- int pt_status;
- ptrace_state_t ptrace_state;
- process_event_vector events = PEVT_NONE;
-
- /* This is always TRUE with ptrace. */
- *must_continue_pid_after = 1;
-
- errno = 0;
- pt_status = call_ptrace (PT_GET_PROCESS_STATE,
- pid,
- (PTRACE_ARG3_TYPE) &ptrace_state,
- sizeof (ptrace_state));
- if (errno)
- perror_with_name ("ptrace");
- if (pt_status < 0)
- return events;
-
- if (ptrace_state.pe_report_event & PTRACE_SIGNAL)
- events |= PEVT_SIGNAL;
- if (ptrace_state.pe_report_event & PTRACE_FORK)
- events |= PEVT_FORK;
- if (ptrace_state.pe_report_event & PTRACE_VFORK)
- events |= PEVT_VFORK;
- if (ptrace_state.pe_report_event & PTRACE_EXEC)
- events |= PEVT_EXEC;
- if (ptrace_state.pe_report_event & PTRACE_EXIT)
- events |= PEVT_EXIT;
-
- return events;
+ return 1; /* Yes, the child must be resumed. */
}
-#endif /* HPPA_GET_PROCESS_EVENTS */
void
require_notification_of_events (pid)
- int pid;
+ int pid;
{
#if defined(PT_SET_EVENT_MASK)
int pt_status;
ptrace_event_t ptrace_events;
+ int nsigs;
+ int signum;
/* Instruct the kernel as to the set of events we wish to be
informed of. (This support does not exist before HPUX 10.0.
We'll assume if PT_SET_EVENT_MASK has not been defined by
- <sys/ptrace.h>, then we're being built on pre-10.0.)
- */
+ <sys/ptrace.h>, then we're being built on pre-10.0.) */
memset (&ptrace_events, 0, sizeof (ptrace_events));
/* Note: By default, all signals are visible to us. If we wish
the kernel to keep certain signals hidden from us, we do it
by calling sigdelset (ptrace_events.pe_signals, signal) for
- each such signal here, before doing PT_SET_EVENT_MASK.
- */
- sigemptyset (&ptrace_events.pe_signals);
+ each such signal here, before doing PT_SET_EVENT_MASK. */
+ /* RM: The above comment is no longer true. We start with ignoring
+ all signals, and then add the ones we are interested in. We could
+ do it the other way: start by looking at all signals and then
+ deleting the ones that we aren't interested in, except that
+ multiple gdb signals may be mapped to the same host signal
+ (eg. TARGET_SIGNAL_IO and TARGET_SIGNAL_POLL both get mapped to
+ signal 22 on HPUX 10.20) We want to be notified if we are
+ interested in either signal. */
+ sigfillset (&ptrace_events.pe_signals);
+
+ /* RM: Let's not bother with signals we don't care about */
+ nsigs = (int) TARGET_SIGNAL_LAST;
+ for (signum = nsigs; signum > 0; signum--)
+ {
+ if ((signal_stop_state (signum)) ||
+ (signal_print_state (signum)) ||
+ (!signal_pass_state (signum)))
+ {
+ if (target_signal_to_host_p (signum))
+ sigdelset (&ptrace_events.pe_signals,
+ target_signal_to_host (signum));
+ }
+ }
ptrace_events.pe_set_event = 0;
ptrace_events.pe_set_event |= PTRACE_FORK;
ptrace_events.pe_set_event |= PTRACE_VFORK;
/* ??rehrauer: Add this one when we're prepared to catch it...
- ptrace_events.pe_set_event |= PTRACE_EXIT;
- */
+ ptrace_events.pe_set_event |= PTRACE_EXIT;
+ */
errno = 0;
pt_status = call_ptrace (PT_SET_EVENT_MASK,
- pid,
- (PTRACE_ARG3_TYPE) &ptrace_events,
- sizeof (ptrace_events));
+ pid,
+ (PTRACE_ARG3_TYPE) & ptrace_events,
+ sizeof (ptrace_events));
if (errno)
perror_with_name ("ptrace");
if (pt_status < 0)
void
require_notification_of_exec_events (pid)
- int pid;
+ int pid;
{
#if defined(PT_SET_EVENT_MASK)
int pt_status;
/* Instruct the kernel as to the set of events we wish to be
informed of. (This support does not exist before HPUX 10.0.
We'll assume if PT_SET_EVENT_MASK has not been defined by
- <sys/ptrace.h>, then we're being built on pre-10.0.)
- */
+ <sys/ptrace.h>, then we're being built on pre-10.0.) */
memset (&ptrace_events, 0, sizeof (ptrace_events));
/* Note: By default, all signals are visible to us. If we wish
the kernel to keep certain signals hidden from us, we do it
by calling sigdelset (ptrace_events.pe_signals, signal) for
- each such signal here, before doing PT_SET_EVENT_MASK.
- */
+ each such signal here, before doing PT_SET_EVENT_MASK. */
sigemptyset (&ptrace_events.pe_signals);
ptrace_events.pe_set_event = 0;
ptrace_events.pe_set_event |= PTRACE_EXEC;
/* ??rehrauer: Add this one when we're prepared to catch it...
- ptrace_events.pe_set_event |= PTRACE_EXIT;
- */
+ ptrace_events.pe_set_event |= PTRACE_EXIT;
+ */
errno = 0;
pt_status = call_ptrace (PT_SET_EVENT_MASK,
- pid,
- (PTRACE_ARG3_TYPE) &ptrace_events,
- sizeof (ptrace_events));
+ pid,
+ (PTRACE_ARG3_TYPE) & ptrace_events,
+ sizeof (ptrace_events));
if (errno)
perror_with_name ("ptrace");
if (pt_status < 0)
void
child_acknowledge_created_inferior (pid)
- int pid;
+ int pid;
{
/* We need a memory home for a constant. */
int tc_magic_parent = PT_VERSION;
int tc_magic_child = 0;
+ /* The remainder of this function is only useful for HPUX 10.0 and
+ later, as it depends upon the ability to request notification
+ of specific kinds of events by the kernel. */
+#if defined(PT_SET_EVENT_MASK)
/* Wait for the child to tell us that it has forked. */
read (startup_semaphore.child_channel[SEM_LISTEN],
- &tc_magic_child,
- sizeof(tc_magic_child));
+ &tc_magic_child,
+ sizeof (tc_magic_child));
/* Notify the child that it can exec.
In the infttrace.c variant of this function, we set the child's
event mask after the fork but before the exec. In the ptrace
world, it seems we can't set the event mask until after the exec. */
-
write (startup_semaphore.parent_channel[SEM_TALK],
- &tc_magic_parent,
- sizeof (tc_magic_parent));
+ &tc_magic_parent,
+ sizeof (tc_magic_parent));
/* We'd better pause a bit before trying to set the event mask,
though, to ensure that the exec has happened. We don't want to
After an exec, the child is no longer executing gdb code. Hence,
we can't have yet another synchronization via the pipes. We'll
just sleep for a second, and hope that's enough delay... */
-
sleep (1);
/* Instruct the kernel as to the set of events we wish to be
informed of. */
-
require_notification_of_exec_events (pid);
/* Discard our copy of the semaphore. */
(void) close (startup_semaphore.parent_channel[SEM_TALK]);
(void) close (startup_semaphore.child_channel[SEM_LISTEN]);
(void) close (startup_semaphore.child_channel[SEM_TALK]);
+#endif
}
void
child_post_startup_inferior (pid)
- int pid;
-
+ int pid;
{
require_notification_of_events (pid);
}
void
child_post_attach (pid)
- int pid;
+ int pid;
{
require_notification_of_events (pid);
}
int
child_insert_fork_catchpoint (pid)
- int pid;
+ int pid;
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_SET_EVENT_MASK)
#else
/* Enable reporting of fork events from the kernel. */
/* ??rehrauer: For the moment, we're always enabling these events,
- and just ignoring them if there's no catchpoint to catch them.
- */
+ and just ignoring them if there's no catchpoint to catch them. */
return 0;
#endif
}
int
child_remove_fork_catchpoint (pid)
- int pid;
+ int pid;
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_SET_EVENT_MASK)
int
child_insert_vfork_catchpoint (pid)
- int pid;
+ int pid;
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_SET_EVENT_MASK)
int
child_remove_vfork_catchpoint (pid)
- int pid;
+ int pid;
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_SET_EVENT_MASK)
int
child_has_forked (pid, childpid)
- int pid;
- int * childpid;
+ int pid;
+ int *childpid;
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_GET_PROCESS_STATE)
return 0;
#else
int pt_status;
- ptrace_state_t ptrace_state;
+ ptrace_state_t ptrace_state;
errno = 0;
pt_status = call_ptrace (PT_GET_PROCESS_STATE,
- pid,
- (PTRACE_ARG3_TYPE) &ptrace_state,
- sizeof (ptrace_state));
+ pid,
+ (PTRACE_ARG3_TYPE) & ptrace_state,
+ sizeof (ptrace_state));
if (errno)
perror_with_name ("ptrace");
if (pt_status < 0)
int
child_has_vforked (pid, childpid)
- int pid;
- int * childpid;
+ int pid;
+ int *childpid;
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_GET_PROCESS_STATE)
#else
int pt_status;
- ptrace_state_t ptrace_state;
+ ptrace_state_t ptrace_state;
errno = 0;
pt_status = call_ptrace (PT_GET_PROCESS_STATE,
- pid,
- (PTRACE_ARG3_TYPE) &ptrace_state,
- sizeof (ptrace_state));
+ pid,
+ (PTRACE_ARG3_TYPE) & ptrace_state,
+ sizeof (ptrace_state));
if (errno)
perror_with_name ("ptrace");
if (pt_status < 0)
int
child_insert_exec_catchpoint (pid)
- int pid;
+ int pid;
{
- /* This request is only available on HPUX 10.0 and later.
- */
+ /* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_SET_EVENT_MASK)
error ("Unable to catch execs prior to HPUX 10.0");
#else
- /* Enable reporting of exec events from the kernel. */
+ /* Enable reporting of exec events from the kernel. */
/* ??rehrauer: For the moment, we're always enabling these events,
- and just ignoring them if there's no catchpoint to catch them.
- */
+ and just ignoring them if there's no catchpoint to catch them. */
return 0;
#endif
}
int
child_remove_exec_catchpoint (pid)
- int pid;
+ int pid;
{
- /* This request is only available on HPUX 10.0 and later.
- */
+ /* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_SET_EVENT_MASK)
error ("Unable to catch execs prior to HPUX 10.0");
#else
/* Disable reporting of exec events from the kernel. */
/* ??rehrauer: For the moment, we're always enabling these events,
- and just ignoring them if there's no catchpoint to catch them.
- */
+ and just ignoring them if there's no catchpoint to catch them. */
return 0;
#endif
}
int
child_has_execd (pid, execd_pathname)
- int pid;
- char ** execd_pathname;
+ int pid;
+ char **execd_pathname;
{
-
- /* This request is only available on HPUX 10.0 and later.
- */
+ /* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_GET_PROCESS_STATE)
*execd_pathname = NULL;
return 0;
#else
int pt_status;
- ptrace_state_t ptrace_state;
+ ptrace_state_t ptrace_state;
errno = 0;
pt_status = call_ptrace (PT_GET_PROCESS_STATE,
- pid,
- (PTRACE_ARG3_TYPE) &ptrace_state,
- sizeof (ptrace_state));
+ pid,
+ (PTRACE_ARG3_TYPE) & ptrace_state,
+ sizeof (ptrace_state));
if (errno)
perror_with_name ("ptrace");
if (pt_status < 0)
if (ptrace_state.pe_report_event & PTRACE_EXEC)
{
- char * exec_file = target_pid_to_exec_file (pid);
+ char *exec_file = target_pid_to_exec_file (pid);
*execd_pathname = savestring (exec_file, strlen (exec_file));
return 1;
}
int
child_reported_exec_events_per_exec_call ()
{
- return 2; /* ptrace reports the event twice per call. */
+ return 2; /* ptrace reports the event twice per call. */
}
int
char *
child_pid_to_exec_file (pid)
- int pid;
+ int pid;
{
- static char exec_file_buffer[1024];
+ static char exec_file_buffer[1024];
int pt_status;
- CORE_ADDR top_of_stack;
- char four_chars[4];
+ CORE_ADDR top_of_stack;
+ char four_chars[4];
int name_index;
int i;
int saved_inferior_pid;
- boolean done;
-
+ boolean done;
+
+#ifdef PT_GET_PROCESS_PATHNAME
/* As of 10.x HP-UX, there's an explicit request to get the pathname. */
pt_status = call_ptrace (PT_GET_PROCESS_PATHNAME,
- pid,
- (PTRACE_ARG3_TYPE) exec_file_buffer,
- sizeof (exec_file_buffer) - 1);
+ pid,
+ (PTRACE_ARG3_TYPE) exec_file_buffer,
+ sizeof (exec_file_buffer) - 1);
if (pt_status == 0)
return exec_file_buffer;
+#endif
/* It appears that this request is broken prior to 10.30.
If it fails, try a really, truly amazingly gross hack
inferior_pid = pid;
/* Try to grab a null-terminated string. */
- while (! done)
+ while (!done)
{
if (target_read_memory (top_of_stack, four_chars, 4) != 0)
{
return;
}
}
-
\f
+
/* Check to see if the given thread is alive.
This is a no-op, as ptrace doesn't support threads, so we just
child_thread_alive (pid)
int pid;
{
- return 1;
+ return 1;
}
#endif /* ! GDB_NATIVE_HPUX_11 */