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"
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). */
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)
+
+ 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
+ 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)
{
- scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3;
- call_ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- scratch);
+ 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)
{
- /* Error, even if attached. Failing to write these two
- registers is pretty serious. */
- sprintf (buf, "writing register number %d", regno);
- perror_with_name (buf);
+ 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;
}
- 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);
+
+ /* 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 = 0;
+ len = REGISTER_RAW_SIZE (regno);
- /* Offset of registers within the u area. */
- unsigned int 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));
+ }
- offset = U_REGS_OFFSET;
+ /* 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)));
- regaddr = register_addr (regno, offset);
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
+ 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);
+ = (((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
if (write)
{
/* Fill start and end extra bytes of buffer with existing memory data. */
- if (addr != memaddr || len < (int)sizeof (int))
+ 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,
+ buffer[0] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
}
errno = 0;
pt_request = (addr < text_end) ? PT_WIUSER : PT_WDUSER;
pt_status = call_ptrace (pt_request,
- inferior_pid,
+ inferior_pid,
(PTRACE_ARG3_TYPE) addr,
buffer[i]);
errno = 0;
pt_request = (pt_request == PT_WIUSER) ? PT_WDUSER : PT_WIUSER;
pt_status = call_ptrace (pt_request,
- inferior_pid,
+ inferior_pid,
(PTRACE_ARG3_TYPE) addr,
buffer[i]);
/* No, we still fail. Okay, time to punt. */
if ((pt_status == -1) && errno)
{
- free(buffer);
+ free (buffer);
return 0;
}
}
for (i = 0; i < count; i++, addr += sizeof (int))
{
errno = 0;
- buffer[i] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
+ buffer[i] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
if (errno)
{
- free(buffer);
+ 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;
}
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(). */
+ 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 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 because address returned */
- static char buf[30];
+ /* Static because address returned */
+ static char buf[30];
- /* Extra NULLs for paranoia's sake */
- sprintf (buf, "process %d\0\0\0\0", pid);
-
- return buf;
+ /* Extra NULLs for paranoia's sake */
+ sprintf (buf, "process %d\0\0\0\0", pid);
+
+ return buf;
}
/* 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. */
+ See infttrace.c for details. */
char *
hppa_tid_to_str (tid)
- pid_t tid;
+ pid_t tid;
{
- /* Static because address returned */
- static char buf[30];
+ /* Static because address returned */
+ static char buf[30];
+
+ /* Extra NULLs for paranoia's sake */
+ sprintf (buf, "system thread %d\0\0\0\0", tid);
- /* Extra NULLs for paranoia's sake */
- sprintf (buf, "system thread %d\0\0\0\0", tid);
-
- return buf;
+ 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));
&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
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. */
+ return 1; /* Yes, the child must be resumed. */
}
void
#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.
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);
+ /* 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)
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)
/* 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));
+ sizeof (tc_magic_child));
/* Notify the child that it can exec.
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,
+ (PTRACE_ARG3_TYPE) & ptrace_state,
sizeof (ptrace_state));
if (errno)
perror_with_name ("ptrace");
#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,
+ (PTRACE_ARG3_TYPE) & ptrace_state,
sizeof (ptrace_state));
if (errno)
perror_with_name ("ptrace");
#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,
+ (PTRACE_ARG3_TYPE) & ptrace_state,
sizeof (ptrace_state));
if (errno)
perror_with_name ("ptrace");
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
int i;
int saved_inferior_pid;
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,
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 */
projects / deliverable / binutils-gdb.git / blobdiff