/* Native support code for HPUX PA-RISC.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1998, 1999
+ Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
#include "target.h"
#include <sys/ptrace.h>
#include "gdbcore.h"
-#include <wait.h>
+#include "gdb_wait.h"
+#include "regcache.h"
#include <signal.h>
extern CORE_ADDR text_end;
-static void fetch_register PARAMS ((int));
+static void fetch_register (int);
void
-fetch_inferior_registers (regno)
- int regno;
+fetch_inferior_registers (int regno)
{
if (regno == -1)
for (regno = 0; regno < NUM_REGS; regno++)
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). */
void
-store_inferior_registers (regno)
- int regno;
+store_inferior_registers (int regno)
{
register unsigned int regaddr;
char buf[80];
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)
{
- scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3;
- call_ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- scratch);
+ 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 (__FILE__, __LINE__,
+ "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 (PIDGET (inferior_ptid), (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, PIDGET (inferior_ptid),
+ (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++)
}
-/* Our own version of the offsetof macro, since we can't assume ANSI C. */
-#define HPPAH_OFFSETOF(type, member) ((int) (&((type *) 0)->member))
-
/* Fetch a register's value from the process's U area. */
static void
-fetch_register (regno)
- int regno;
+fetch_register (int regno)
{
char buf[MAX_REGISTER_RAW_SIZE];
unsigned int addr, len, offset;
+ (REGISTER_BYTE (regno) - REGISTER_BYTE (1)));
else
- fatal ("hppa-nat.c (fetch_register): unexpected register size");
+ internal_error (__FILE__, __LINE__,
+ "hppa-nat.c (fetch_register): unexpected register size");
for (i = 0; i < len; i += 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,
+ call_ptrace (PT_RUREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) addr + i, 0);
if (errno != 0)
{
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
- anyway. */
+ anyway. TARGET is ignored. */
int
-child_xfer_memory (memaddr, myaddr, len, write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
- struct target_ops *target; /* ignored */
+child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
+ struct mem_attrib *mem,
+ struct target_ops *target)
{
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);
{
/* 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);
+ PIDGET (inferior_ptid),
+ (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,
+ PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) (addr
+ (count - 1) * sizeof (int)),
0);
errno = 0;
pt_request = (addr < text_end) ? PT_WIUSER : PT_WDUSER;
pt_status = call_ptrace (pt_request,
- inferior_pid,
+ PIDGET (inferior_ptid),
(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,
+ PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) addr,
buffer[i]);
/* No, we still fail. Okay, time to punt. */
if ((pt_status == -1) && errno)
{
- free (buffer);
+ xfree (buffer);
return 0;
}
}
{
errno = 0;
buffer[i] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
- inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
+ PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) addr, 0);
if (errno)
{
- free (buffer);
+ xfree (buffer);
return 0;
}
QUIT;
/* Copy appropriate bytes out of the buffer. */
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
- free (buffer);
+ xfree (buffer);
return len;
}
void
-child_post_follow_inferior_by_clone ()
+child_post_follow_inferior_by_clone (void)
{
int status;
At this point, the clone has attached to the child. Because of
the SIGSTOP, we must now deliver a SIGCONT to the child, or it
won't behave properly. */
- status = kill (inferior_pid, SIGCONT);
+ status = kill (PIDGET (inferior_ptid), SIGCONT);
}
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;
+child_post_follow_vfork (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
/* 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 (ptid_t ptid)
{
/* Static because address returned */
static char buf[30];
+ pid_t pid = PIDGET (ptid);
- /* Extra NULLs for paranoia's sake */
- sprintf (buf, "process %d\0\0\0\0", pid);
+ /* Extra NUL for paranoia's sake */
+ sprintf (buf, "process %d%c", pid, '\0');
return buf;
}
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 (ptid_t ptid)
{
/* Static because address returned */
static char buf[30];
+ /* This seems strange, but when I did the ptid conversion, it looked
+ as though a pid was always being passed. - Kevin Buettner */
+ pid_t tid = PIDGET (ptid);
/* Extra NULLs for paranoia's sake */
- sprintf (buf, "system thread %d\0\0\0\0", tid);
+ sprintf (buf, "system thread %d%c", tid, '\0');
return buf;
}
static startup_semaphore_t startup_semaphore;
-extern int parent_attach_all PARAMS ((int, PTRACE_ARG3_TYPE, int));
+extern int parent_attach_all (int, PTRACE_ARG3_TYPE, int);
#ifdef PT_SETTRC
/* This function causes the caller's process to be traced by its
child_acknowledge_created_inferior.) */
int
-parent_attach_all (pid, addr, data)
- int pid;
- PTRACE_ARG3_TYPE addr;
- int data;
+parent_attach_all (int pid, PTRACE_ARG3_TYPE addr, int data)
{
int pt_status = 0;
#endif
int
-hppa_require_attach (pid)
- int pid;
+hppa_require_attach (int pid)
{
int pt_status;
CORE_ADDR pc;
}
int
-hppa_require_detach (pid, signal)
- int pid;
- int signal;
+hppa_require_detach (int pid, int signal)
{
errno = 0;
call_ptrace (PT_DETACH, pid, (PTRACE_ARG3_TYPE) 1, signal);
dummy versions, which perform no useful work. */
void
-hppa_enable_page_protection_events (pid)
- int pid;
+hppa_enable_page_protection_events (int pid)
{
}
void
-hppa_disable_page_protection_events (pid)
- int pid;
+hppa_disable_page_protection_events (int pid)
{
}
int
-hppa_insert_hw_watchpoint (pid, start, len, type)
- int pid;
- CORE_ADDR start;
- LONGEST len;
- int type;
+hppa_insert_hw_watchpoint (int pid, CORE_ADDR start, LONGEST len, int type)
{
error ("Hardware watchpoints not implemented on this platform.");
}
int
-hppa_remove_hw_watchpoint (pid, start, len, type)
- int pid;
- CORE_ADDR start;
- LONGEST len;
- enum bptype type;
+hppa_remove_hw_watchpoint (int pid, CORE_ADDR start, LONGEST len,
+ enum bptype type)
{
error ("Hardware watchpoints not implemented on this platform.");
}
int
-hppa_can_use_hw_watchpoint (type, cnt, ot)
- enum bptype type;
- int cnt;
- enum bptype ot;
+hppa_can_use_hw_watchpoint (enum bptype type, int cnt, enum bptype ot)
{
return 0;
}
int
-hppa_range_profitable_for_hw_watchpoint (pid, start, len)
- int pid;
- CORE_ADDR start;
- LONGEST len;
+hppa_range_profitable_for_hw_watchpoint (int pid, CORE_ADDR start, LONGEST len)
{
error ("Hardware watchpoints not implemented on this platform.");
}
char *
-hppa_pid_or_tid_to_str (id)
- pid_t id;
+hppa_pid_or_tid_to_str (ptid_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
hppa-tdep.c. */
pid_t
-hppa_switched_threads (pid)
- pid_t pid;
+hppa_switched_threads (pid_t pid)
{
return (pid_t) 0;
}
void
-hppa_ensure_vforking_parent_remains_stopped (pid)
- int pid;
+hppa_ensure_vforking_parent_remains_stopped (int pid)
{
/* This assumes that the vforked parent is presently stopped, and
that the vforked child has just delivered its first exec event.
}
int
-hppa_resume_execd_vforking_child_to_get_parent_vfork ()
+hppa_resume_execd_vforking_child_to_get_parent_vfork (void)
{
return 1; /* Yes, the child must be resumed. */
}
void
-require_notification_of_events (pid)
- int pid;
+require_notification_of_events (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.
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;
}
void
-require_notification_of_exec_events (pid)
- int pid;
+require_notification_of_exec_events (int pid)
{
#if defined(PT_SET_EVENT_MASK)
int pt_status;
ID of the child process, after the debugger has forked. */
void
-child_acknowledge_created_inferior (pid)
- int pid;
+child_acknowledge_created_inferior (int pid)
{
/* We need a memory home for a constant. */
int tc_magic_parent = PT_VERSION;
}
void
-child_post_startup_inferior (pid)
- int pid;
+child_post_startup_inferior (ptid_t ptid)
{
- require_notification_of_events (pid);
+ require_notification_of_events (PIDGET (ptid));
}
void
-child_post_attach (pid)
- int pid;
+child_post_attach (int pid)
{
require_notification_of_events (pid);
}
int
-child_insert_fork_catchpoint (pid)
- int pid;
+child_insert_fork_catchpoint (int pid)
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_SET_EVENT_MASK)
}
int
-child_remove_fork_catchpoint (pid)
- int pid;
+child_remove_fork_catchpoint (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;
+child_insert_vfork_catchpoint (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;
+child_remove_vfork_catchpoint (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;
+child_has_forked (int pid, int *childpid)
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_GET_PROCESS_STATE)
}
int
-child_has_vforked (pid, childpid)
- int pid;
- int *childpid;
+child_has_vforked (int pid, int *childpid)
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_GET_PROCESS_STATE)
}
int
-child_can_follow_vfork_prior_to_exec ()
+child_can_follow_vfork_prior_to_exec (void)
{
/* ptrace doesn't allow this. */
return 0;
}
int
-child_insert_exec_catchpoint (pid)
- int pid;
+child_insert_exec_catchpoint (int pid)
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_SET_EVENT_MASK)
}
int
-child_remove_exec_catchpoint (pid)
- int pid;
+child_remove_exec_catchpoint (int pid)
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_SET_EVENT_MASK)
}
int
-child_has_execd (pid, execd_pathname)
- int pid;
- char **execd_pathname;
+child_has_execd (int pid, char **execd_pathname)
{
/* This request is only available on HPUX 10.0 and later. */
#if !defined(PT_GET_PROCESS_STATE)
}
int
-child_reported_exec_events_per_exec_call ()
+child_reported_exec_events_per_exec_call (void)
{
return 2; /* ptrace reports the event twice per call. */
}
int
-child_has_syscall_event (pid, kind, syscall_id)
- int pid;
- enum target_waitkind *kind;
- int *syscall_id;
+child_has_syscall_event (int pid, enum target_waitkind *kind, int *syscall_id)
{
/* This request is only available on HPUX 10.30 and later, via
the ttrace interface. */
}
char *
-child_pid_to_exec_file (pid)
- int pid;
+child_pid_to_exec_file (int pid)
{
static char exec_file_buffer[1024];
int pt_status;
char four_chars[4];
int name_index;
int i;
- int saved_inferior_pid;
+ ptid_t saved_inferior_ptid;
boolean done;
#ifdef PT_GET_PROCESS_PATHNAME
name_index = 0;
done = 0;
- /* On the chance that pid != inferior_pid, set inferior_pid
- to pid, so that (grrrr!) implicit uses of inferior_pid get
+ /* On the chance that pid != inferior_ptid, set inferior_ptid
+ to pid, so that (grrrr!) implicit uses of inferior_ptid get
the right id. */
- saved_inferior_pid = inferior_pid;
- inferior_pid = pid;
+ saved_inferior_ptid = inferior_ptid;
+ inferior_ptid = pid_to_ptid (pid);
/* Try to grab a null-terminated string. */
while (!done)
{
if (target_read_memory (top_of_stack, four_chars, 4) != 0)
{
- inferior_pid = saved_inferior_pid;
+ inferior_ptid = saved_inferior_ptid;
return NULL;
}
for (i = 0; i < 4; i++)
if (exec_file_buffer[0] == '\0')
{
- inferior_pid = saved_inferior_pid;
+ inferior_ptid = saved_inferior_ptid;
return NULL;
}
- inferior_pid = saved_inferior_pid;
+ inferior_ptid = saved_inferior_ptid;
return exec_file_buffer;
}
void
-pre_fork_inferior ()
+pre_fork_inferior (void)
{
int status;
return "TRUE". */
int
-child_thread_alive (pid)
- int pid;
+child_thread_alive (ptid_t ptid)
{
return 1;
}
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