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authorMark Kettenis <kettenis@gnu.org>2004-12-18 17:36:33 +0000
committerMark Kettenis <kettenis@gnu.org>2004-12-18 17:36:33 +0000
commit87285d5bcb0f5584fe164007d6df1addfaec3850 (patch)
tree5f38e18b5eab6b91c753f10b6e5aa6def66e095d /gdb/hppah-nat.c
parent1a20add74a2e59f528fe5e667a2cf6c135a4e2d4 (diff)
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* hppah-nat.c: Remove file.
* infttrace.h: Remove file. * infttrace.c: Remove file. * Makefile.in (ALLDEPFILES): Remove hppah-nat.c (infttrace_h): Remove variable. (hppah-nat.o, infttrace.o): Remove dependencies. * configure.host (hppa*64*-*-hpux11*): Remove. * config/pa/hpux11w.mh: Remove file. * config/pa/nm-hppah.h: Remove file. * config/pa/nm-hppah11.h: Remove file.
Diffstat (limited to 'gdb/hppah-nat.c')
-rw-r--r--gdb/hppah-nat.c1440
1 files changed, 0 insertions, 1440 deletions
diff --git a/gdb/hppah-nat.c b/gdb/hppah-nat.c
deleted file mode 100644
index bf6af6d..0000000
--- a/gdb/hppah-nat.c
+++ /dev/null
@@ -1,1440 +0,0 @@
-/* Native support code for HPUX PA-RISC, for GDB the GNU debugger.
-
- Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1998, 1999, 2000, 2001, 2004 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 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.
-
- 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 "inferior.h"
-#include "target.h"
-#include <sys/ptrace.h>
-#include "gdbcore.h"
-#include "gdb_wait.h"
-#include "regcache.h"
-#include "gdb_string.h"
-#include "infttrace.h"
-#include <signal.h>
-
-#include "hppa-tdep.h"
-
-static CORE_ADDR text_end;
-
-void
-deprecated_hpux_text_end (struct target_ops *exec_ops)
-{
- struct section_table *p;
-
- /* Set text_end to the highest address of the end of any readonly
- code section. */
- /* FIXME: The comment above does not match the code. The code
- checks for sections with are either code *or* readonly. */
- text_end = (CORE_ADDR) 0;
- for (p = exec_ops->to_sections; p < exec_ops->to_sections_end; p++)
- if (bfd_get_section_flags (p->bfd, p->the_bfd_section)
- & (SEC_CODE | SEC_READONLY))
- {
- if (text_end < p->endaddr)
- text_end = p->endaddr;
- }
-}
-
-
-static void fetch_register (int);
-
-void
-fetch_inferior_registers (int regno)
-{
- if (regno == -1)
- for (regno = 0; regno < NUM_REGS; regno++)
- fetch_register (regno);
- else
- 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 (int regno)
-{
- unsigned int regaddr;
- char buf[80];
- int i;
- unsigned int offset = U_REGS_OFFSET;
- int scratch;
-
- if (regno >= 0)
- {
- unsigned int addr, len, offset;
-
- if (CANNOT_STORE_REGISTER (regno))
- return;
-
- offset = 0;
- len = register_size (current_gdbarch, 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_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_size (current_gdbarch, 0) - len;
- }
-
- /* Floating-point registers come from the ss_fpblock area. */
- else if (regno >= HPPA_FP0_REGNUM)
- addr = HPPAH_OFFSETOF (save_state_t, ss_fpblock)
- + ((regno - HPPA_FP0_REGNUM)
- * register_size (current_gdbarch, regno));
-
- /* 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)
- + regno * 8;
-
- /* 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)
- + (regno - 1) * 4;
- 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 == HPPA_PCOQ_HEAD_REGNUM || regno == HPPA_PCOQ_TAIL_REGNUM) && len == 8)
- {
- CORE_ADDR temp;
-
- regcache_raw_read (current_regcache, regno, &temp);
-
- /* 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)
- {
- 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 == HPPA_IPSW_REGNUM && len == 8)
- {
- int temp = 0;
-
- regcache_raw_write_part (current_regcache, regno, 0,
- sizeof (int), &temp);
- }
-#endif
-
- for (i = 0; i < len; i += sizeof (int))
- {
- int temp;
-
- errno = 0;
- regcache_raw_read_part (current_regcache, regno, i,
- sizeof (int), &temp);
- call_ptrace (PT_WUREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) addr + i,
- temp);
- 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 == HPPA_PCOQ_HEAD_REGNUM || regno == HPPA_PCOQ_TAIL_REGNUM)
- perror_with_name (msg);
- else
- warning (msg);
- return;
- }
- }
- }
- else
- for (regno = 0; regno < NUM_REGS; regno++)
- store_inferior_registers (regno);
-}
-
-
-/* Fetch a register's value from the process's U area. */
-static void
-fetch_register (int regno)
-{
- char buf[MAX_REGISTER_SIZE];
- unsigned int addr, len, offset;
- int i;
-
- offset = 0;
- len = register_size (current_gdbarch, 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_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_size (current_gdbarch, 0) - len;
- memset (buf, 0, sizeof (buf));
- }
-
- /* Floating-point registers come from the ss_fpblock area. */
- else if (regno >= HPPA_FP0_REGNUM)
- addr = (HPPAH_OFFSETOF (save_state_t, ss_fpblock)
- + (DEPRECATED_REGISTER_BYTE (regno) - DEPRECATED_REGISTER_BYTE (HPPA_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)
- + DEPRECATED_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)
- + (DEPRECATED_REGISTER_BYTE (regno) - DEPRECATED_REGISTER_BYTE (1)));
-
- else
- internal_error (__FILE__, __LINE__,
- "hppa-nat.c (fetch_register): unexpected register size");
-
- for (i = 0; i < len; i += sizeof (int))
- {
- errno = 0;
- /* 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, PIDGET (inferior_ptid),
- (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. */
- char *err = safe_strerror (errno);
- char *msg = alloca (strlen (err) + 128);
- sprintf (msg, "reading `%s' register: %s",
- REGISTER_NAME (regno), err);
- warning (msg);
- 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 == HPPA_PCOQ_HEAD_REGNUM || regno == HPPA_PCOQ_TAIL_REGNUM)
- buf[len - 1] &= ~0x3;
-
- regcache_raw_supply (current_regcache, regno, buf);
-}
-
-
-/* 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
- deprecated_child_ops doesn't allow memory operations to cross below
- us in the target stack anyway. TARGET is ignored. */
-
-int
-child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
- struct mem_attrib *mem,
- struct target_ops *target)
-{
- int i;
- /* Round starting address down to longword boundary. */
- CORE_ADDR addr = memaddr & - (CORE_ADDR)(sizeof (int));
- /* Round ending address up; get number of longwords that makes. */
- int count
- = (((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. */
- 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,
- 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,
- PIDGET (inferior_ptid),
- (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??! */
- errno = 0;
- pt_request = (addr < text_end) ? PT_WIUSER : PT_WDUSER;
- pt_status = call_ptrace (pt_request,
- PIDGET (inferior_ptid),
- (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,
- PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) addr,
- buffer[i]);
-
- /* No, we still fail. Okay, time to punt. */
- if ((pt_status == -1) && errno)
- {
- xfree (buffer);
- return 0;
- }
- }
- }
- }
- else
- {
- /* Read all the longwords */
- for (i = 0; i < count; i++, addr += sizeof (int))
- {
- errno = 0;
- buffer[i] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
- PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) addr, 0);
- if (errno)
- {
- xfree (buffer);
- return 0;
- }
- QUIT;
- }
-
- /* Copy appropriate bytes out of the buffer. */
- memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
- }
- xfree (buffer);
- return len;
-}
-
-char *saved_child_execd_pathname = NULL;
-int saved_vfork_pid;
-enum {
- STATE_NONE,
- STATE_GOT_CHILD,
- STATE_GOT_EXEC,
- STATE_GOT_PARENT,
- STATE_FAKE_EXEC
-} saved_vfork_state = STATE_NONE;
-
-int
-child_follow_fork (int follow_child)
-{
- ptid_t last_ptid;
- struct target_waitstatus last_status;
- int has_vforked;
- int parent_pid, child_pid;
-
- get_last_target_status (&last_ptid, &last_status);
- has_vforked = (last_status.kind == TARGET_WAITKIND_VFORKED);
- parent_pid = ptid_get_pid (last_ptid);
- child_pid = last_status.value.related_pid;
-
- /* At this point, if we are vforking, breakpoints were already
- detached from the child in child_wait; and the child has already
- called execve(). If we are forking, both the parent and child
- have breakpoints inserted. */
-
- if (! follow_child)
- {
- if (! has_vforked)
- {
- detach_breakpoints (child_pid);
-#ifdef SOLIB_REMOVE_INFERIOR_HOOK
- SOLIB_REMOVE_INFERIOR_HOOK (child_pid);
-#endif
- }
-
- /* Detach from the child. */
- printf_unfiltered ("Detaching after fork from %s\n",
- target_pid_to_str (pid_to_ptid (child_pid)));
- hppa_require_detach (child_pid, 0);
-
- /* The parent and child of a vfork share the same address space.
- Also, on some targets the order in which vfork and exec events
- are received for parent in child requires some delicate handling
- of the events.
-
- For instance, on ptrace-based HPUX we receive the child's vfork
- event first, at which time the parent has been suspended by the
- OS and is essentially untouchable until the child's exit or second
- exec event arrives. At that time, the parent's vfork event is
- delivered to us, and that's when we see and decide how to follow
- the vfork. But to get to that point, we must continue the child
- until it execs or exits. To do that smoothly, all breakpoints
- must be removed from the child, in case there are any set between
- the vfork() and exec() calls. But removing them from the child
- also removes them from the parent, due to the shared-address-space
- nature of a vfork'd parent and child. On HPUX, therefore, we must
- take care to restore the bp's to the parent before we continue it.
- Else, it's likely that we may not stop in the expected place. (The
- worst scenario is when the user tries to step over a vfork() call;
- the step-resume bp must be restored for the step to properly stop
- in the parent after the call completes!)
-
- Sequence of events, as reported to gdb from HPUX:
-
- Parent Child Action for gdb to take
- -------------------------------------------------------
- 1 VFORK Continue child
- 2 EXEC
- 3 EXEC or EXIT
- 4 VFORK
-
- Now that the child has safely exec'd or exited, we must restore
- the parent's breakpoints before we continue it. Else, we may
- cause it run past expected stopping points. */
-
- if (has_vforked)
- reattach_breakpoints (parent_pid);
- }
- else
- {
- /* Needed to keep the breakpoint lists in sync. */
- if (! has_vforked)
- detach_breakpoints (child_pid);
-
- /* Before detaching from the parent, remove all breakpoints from it. */
- remove_breakpoints ();
-
- /* Also reset the solib inferior hook from the parent. */
-#ifdef SOLIB_REMOVE_INFERIOR_HOOK
- SOLIB_REMOVE_INFERIOR_HOOK (PIDGET (inferior_ptid));
-#endif
-
- /* Detach from the parent. */
- target_detach (NULL, 1);
-
- /* Attach to the child. */
- printf_unfiltered ("Attaching after fork to %s\n",
- target_pid_to_str (pid_to_ptid (child_pid)));
- hppa_require_attach (child_pid);
- inferior_ptid = pid_to_ptid (child_pid);
-
- /* If we vforked, then we've also execed by now. The exec will be
- reported momentarily. follow_exec () will handle breakpoints, so
- we don't have to.. */
- if (!has_vforked)
- follow_inferior_reset_breakpoints ();
- }
-
- if (has_vforked)
- {
- /* If we followed the parent, don't try to follow the child's exec. */
- if (saved_vfork_state != STATE_GOT_PARENT
- && saved_vfork_state != STATE_FAKE_EXEC)
- fprintf_unfiltered (gdb_stdout,
- "hppa: post follow vfork: confused state\n");
-
- if (! follow_child || saved_vfork_state == STATE_GOT_PARENT)
- saved_vfork_state = STATE_NONE;
- else
- return 1;
- }
- return 0;
-}
-
-/* Format a process id, given PID. Be sure to terminate
- this with a null--it's going to be printed via a "%s". */
-char *
-child_pid_to_str (ptid_t ptid)
-{
- /* Static because address returned */
- static char buf[30];
- pid_t pid = PIDGET (ptid);
-
- /* Extra NUL for paranoia's sake */
- sprintf (buf, "process %d%c", pid, '\0');
-
- 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. */
-char *
-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%c", tid, '\0');
-
- return buf;
-}
-
-/*## */
-/* Enable HACK for ttrace work. In
- * infttrace.c/require_notification_of_events,
- * this is set to 0 so that the loop in child_wait
- * won't loop.
- */
-int not_same_real_pid = 1;
-/*## */
-
-/* Wait for child to do something. Return pid of child, or -1 in case
- of error; store status through argument pointer OURSTATUS. */
-
-ptid_t
-child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
-{
- int save_errno;
- int status;
- char *execd_pathname = NULL;
- int exit_status;
- int related_pid;
- int syscall_id;
- enum target_waitkind kind;
- int pid;
-
- if (saved_vfork_state == STATE_FAKE_EXEC)
- {
- saved_vfork_state = STATE_NONE;
- ourstatus->kind = TARGET_WAITKIND_EXECD;
- ourstatus->value.execd_pathname = saved_child_execd_pathname;
- return inferior_ptid;
- }
-
- do
- {
- set_sigint_trap (); /* Causes SIGINT to be passed on to the
- attached process. */
- set_sigio_trap ();
-
- pid = ptrace_wait (inferior_ptid, &status);
-
- save_errno = errno;
-
- clear_sigio_trap ();
-
- clear_sigint_trap ();
-
- if (pid == -1)
- {
- if (save_errno == EINTR)
- continue;
-
- fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n",
- safe_strerror (save_errno));
-
- /* Claim it exited with unknown signal. */
- ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
- ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
- return pid_to_ptid (-1);
- }
-
- /* Did it exit?
- */
- if (target_has_exited (pid, status, &exit_status))
- {
- /* ??rehrauer: For now, ignore this. */
- continue;
- }
-
- if (!target_thread_alive (pid_to_ptid (pid)))
- {
- ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
- return pid_to_ptid (pid);
- }
-
- if (hpux_has_forked (pid, &related_pid))
- {
- /* Ignore the parent's fork event. */
- if (pid == PIDGET (inferior_ptid))
- {
- ourstatus->kind = TARGET_WAITKIND_IGNORE;
- return inferior_ptid;
- }
-
- /* If this is the child's fork event, report that the
- process has forked. */
- if (related_pid == PIDGET (inferior_ptid))
- {
- ourstatus->kind = TARGET_WAITKIND_FORKED;
- ourstatus->value.related_pid = pid;
- return inferior_ptid;
- }
- }
-
- if (hpux_has_vforked (pid, &related_pid))
- {
- if (pid == PIDGET (inferior_ptid))
- {
- if (saved_vfork_state == STATE_GOT_CHILD)
- saved_vfork_state = STATE_GOT_PARENT;
- else if (saved_vfork_state == STATE_GOT_EXEC)
- saved_vfork_state = STATE_FAKE_EXEC;
- else
- fprintf_unfiltered (gdb_stdout,
- "hppah: parent vfork: confused\n");
- }
- else if (related_pid == PIDGET (inferior_ptid))
- {
- if (saved_vfork_state == STATE_NONE)
- saved_vfork_state = STATE_GOT_CHILD;
- else
- fprintf_unfiltered (gdb_stdout,
- "hppah: child vfork: confused\n");
- }
- else
- fprintf_unfiltered (gdb_stdout,
- "hppah: unknown vfork: confused\n");
-
- if (saved_vfork_state == STATE_GOT_CHILD)
- {
- child_post_startup_inferior (pid_to_ptid (pid));
- detach_breakpoints (pid);
-#ifdef SOLIB_REMOVE_INFERIOR_HOOK
- SOLIB_REMOVE_INFERIOR_HOOK (pid);
-#endif
- child_resume (pid_to_ptid (pid), 0, TARGET_SIGNAL_0);
- ourstatus->kind = TARGET_WAITKIND_IGNORE;
- return pid_to_ptid (related_pid);
- }
- else if (saved_vfork_state == STATE_FAKE_EXEC)
- {
- ourstatus->kind = TARGET_WAITKIND_VFORKED;
- ourstatus->value.related_pid = related_pid;
- return pid_to_ptid (pid);
- }
- else
- {
- /* We saw the parent's vfork, but we haven't seen the exec yet.
- Wait for it, for simplicity's sake. It should be pending. */
- saved_vfork_pid = related_pid;
- ourstatus->kind = TARGET_WAITKIND_IGNORE;
- return pid_to_ptid (pid);
- }
- }
-
- if (hpux_has_execd (pid, &execd_pathname))
- {
- /* On HP-UX, events associated with a vforking inferior come in
- threes: a vfork event for the child (always first), followed
- a vfork event for the parent and an exec event for the child.
- The latter two can come in either order. Make sure we get
- both. */
- if (saved_vfork_state != STATE_NONE)
- {
- if (saved_vfork_state == STATE_GOT_CHILD)
- {
- saved_vfork_state = STATE_GOT_EXEC;
- /* On HP/UX with ptrace, the child must be resumed before
- the parent vfork event is delivered. A single-step
- suffices. */
- if (RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK ())
- target_resume (pid_to_ptid (pid), 1, TARGET_SIGNAL_0);
- ourstatus->kind = TARGET_WAITKIND_IGNORE;
- }
- else if (saved_vfork_state == STATE_GOT_PARENT)
- {
- saved_vfork_state = STATE_FAKE_EXEC;
- ourstatus->kind = TARGET_WAITKIND_VFORKED;
- ourstatus->value.related_pid = saved_vfork_pid;
- }
- else
- fprintf_unfiltered (gdb_stdout,
- "hppa: exec: unexpected state\n");
-
- saved_child_execd_pathname = execd_pathname;
-
- return inferior_ptid;
- }
-
- /* Are we ignoring initial exec events? (This is likely because
- we're in the process of starting up the inferior, and another
- (older) mechanism handles those.) If so, we'll report this
- as a regular stop, not an exec.
- */
- if (inferior_ignoring_startup_exec_events)
- {
- inferior_ignoring_startup_exec_events--;
- }
- else
- {
- ourstatus->kind = TARGET_WAITKIND_EXECD;
- ourstatus->value.execd_pathname = execd_pathname;
- return pid_to_ptid (pid);
- }
- }
-
- /* All we must do with these is communicate their occurrence
- to wait_for_inferior...
- */
- if (hpux_has_syscall_event (pid, &kind, &syscall_id))
- {
- ourstatus->kind = kind;
- ourstatus->value.syscall_id = syscall_id;
- return pid_to_ptid (pid);
- }
-
- /*## } while (pid != PIDGET (inferior_ptid)); ## *//* Some other child died or stopped */
-/* hack for thread testing */
- }
- while ((pid != PIDGET (inferior_ptid)) && not_same_real_pid);
-/*## */
-
- store_waitstatus (ourstatus, status);
- return pid_to_ptid (pid);
-}
-
-#if !defined (GDB_NATIVE_HPUX_11)
-
-/* The following code is a substitute for the infttrace.c versions used
- with ttrace() in HPUX 11. */
-
-/* This value is an arbitrary integer. */
-#define PT_VERSION 123456
-
-/* This semaphore is used to coordinate the child and parent processes
- 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;
-
-#define SEM_TALK (1)
-#define SEM_LISTEN (0)
-
-static startup_semaphore_t startup_semaphore;
-
-#ifdef PT_SETTRC
-/* This function causes the caller's process to be traced by its
- parent. This is intended to be called after GDB forks itself,
- and before the child execs the target.
-
- Note that HP-UX ptrace is rather funky in how this is done.
- If the parent wants to get the initial exec event of a child,
- it must set the ptrace event mask of the child to include execs.
- (The child cannot do this itself.) This must be done after the
- child is forked, but before it execs.
-
- To coordinate the parent and child, we implement a semaphore using
- pipes. After SETTRC'ing itself, the child tells the parent that
- it is now traceable by the parent, and waits for the parent's
- acknowledgement. The parent can then set the child's event mask,
- and notify the child that it can now exec.
-
- (The acknowledgement by parent happens as a result of a call to
- child_acknowledge_created_inferior.) */
-
-int
-parent_attach_all (int pid, PTRACE_ARG3_TYPE addr, int data)
-{
- int pt_status = 0;
-
- /* We need a memory home for a constant. */
- int tc_magic_child = PT_VERSION;
- int tc_magic_parent = 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)
-
- /* Notify the parent that we're potentially ready to exec(). */
- write (startup_semaphore.child_channel[SEM_TALK],
- &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));
- if (tc_magic_child != tc_magic_parent)
- warning ("mismatched semaphore magic");
-
- /* Discard our copy of the semaphore. */
- (void) close (startup_semaphore.parent_channel[SEM_LISTEN]);
- (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
-
- return 0;
-}
-#endif
-
-int
-hppa_require_attach (int pid)
-{
- int pt_status;
- CORE_ADDR pc;
- CORE_ADDR pc_addr;
- unsigned int regs_offset;
-
- /* Are we already attached? There appears to be no explicit way to
- answer this via ptrace, so we try something which should be
- innocuous if we are attached. If that fails, then we assume
- we're not attached, and so attempt to make it so. */
-
- errno = 0;
- regs_offset = U_REGS_OFFSET;
- pc_addr = register_addr (PC_REGNUM, regs_offset);
- pc = call_ptrace (PT_READ_U, pid, (PTRACE_ARG3_TYPE) pc_addr, 0);
-
- if (errno)
- {
- errno = 0;
- pt_status = call_ptrace (PT_ATTACH, pid, (PTRACE_ARG3_TYPE) 0, 0);
-
- if (errno)
- return -1;
-
- /* Now we really are attached. */
- errno = 0;
- }
- attach_flag = 1;
- return pid;
-}
-
-int
-hppa_require_detach (int pid, int signal)
-{
- errno = 0;
- call_ptrace (PT_DETACH, pid, (PTRACE_ARG3_TYPE) 1, signal);
- errno = 0; /* Ignore any errors. */
- return pid;
-}
-
-/* Since ptrace doesn't support memory page-protection events, which
- are used to implement "hardware" watchpoints on HP-UX, these are
- dummy versions, which perform no useful work. */
-
-void
-hppa_enable_page_protection_events (int pid)
-{
-}
-
-void
-hppa_disable_page_protection_events (int pid)
-{
-}
-
-int
-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 (int pid, CORE_ADDR start, LONGEST len, int type)
-{
- error ("Hardware watchpoints not implemented on this platform.");
-}
-
-int
-hppa_can_use_hw_watchpoint (int type, int cnt, int ot)
-{
- return 0;
-}
-
-int
-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 (ptid_t id)
-{
- /* In the ptrace world, there are only processes. */
- return child_pid_to_str (id);
-}
-
-void
-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.
- Calling kill() this way will cause the SIGTRAP to be delivered as
- soon as the parent is resumed, which happens as soon as the
- vforked child is resumed. See wait_for_inferior for the use of
- this function. */
- kill (pid, SIGTRAP);
-}
-
-int
-hppa_resume_execd_vforking_child_to_get_parent_vfork (void)
-{
- return 1; /* Yes, the child must be resumed. */
-}
-
-void
-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.
- 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.) */
- 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. */
- /* 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_SIGNAL;
- ptrace_events.pe_set_event |= PTRACE_EXEC;
- 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;
- */
-
- errno = 0;
- pt_status = call_ptrace (PT_SET_EVENT_MASK,
- pid,
- (PTRACE_ARG3_TYPE) & ptrace_events,
- sizeof (ptrace_events));
- if (errno)
- perror_with_name ("ptrace");
- if (pt_status < 0)
- return;
-#endif
-}
-
-void
-require_notification_of_exec_events (int pid)
-{
-#if defined(PT_SET_EVENT_MASK)
- int pt_status;
- ptrace_event_t ptrace_events;
-
- /* 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.) */
- 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);
-
- 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;
- */
-
- errno = 0;
- pt_status = call_ptrace (PT_SET_EVENT_MASK,
- pid,
- (PTRACE_ARG3_TYPE) & ptrace_events,
- sizeof (ptrace_events));
- if (errno)
- perror_with_name ("ptrace");
- if (pt_status < 0)
- return;
-#endif
-}
-
-/* This function is called by the parent process, with pid being the
- ID of the child process, after the debugger has forked. */
-
-void
-child_acknowledge_created_inferior (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));
-
- /* 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));
-
- /* 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
- wait() on the child, because that'll screw up the upper layers
- of gdb's execution control that expect to see the exec event.
-
- 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_LISTEN]);
- (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 (ptid_t ptid)
-{
- require_notification_of_events (PIDGET (ptid));
-}
-
-void
-child_post_attach (int pid)
-{
- require_notification_of_events (pid);
-}
-
-int
-child_insert_fork_catchpoint (int pid)
-{
- /* This request is only available on HPUX 10.0 and later. */
-#if !defined(PT_SET_EVENT_MASK)
- error ("Unable to catch forks prior to HPUX 10.0");
-#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. */
- return 0;
-#endif
-}
-
-int
-child_remove_fork_catchpoint (int pid)
-{
- /* This request is only available on HPUX 10.0 and later. */
-#if !defined(PT_SET_EVENT_MASK)
- error ("Unable to catch forks prior to HPUX 10.0");
-#else
- /* Disable 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. */
- return 0;
-#endif
-}
-
-int
-child_insert_vfork_catchpoint (int pid)
-{
- /* This request is only available on HPUX 10.0 and later. */
-#if !defined(PT_SET_EVENT_MASK)
- error ("Unable to catch vforks prior to HPUX 10.0");
-#else
- /* Enable reporting of vfork 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. */
- return 0;
-#endif
-}
-
-int
-child_remove_vfork_catchpoint (int pid)
-{
- /* This request is only available on HPUX 10.0 and later. */
-#if !defined(PT_SET_EVENT_MASK)
- error ("Unable to catch vforks prior to HPUX 10.0");
-#else
- /* Disable reporting of vfork 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. */
- return 0;
-#endif
-}
-
-int
-hpux_has_forked (int pid, int *childpid)
-{
- /* This request is only available on HPUX 10.0 and later. */
-#if !defined(PT_GET_PROCESS_STATE)
- *childpid = 0;
- return 0;
-#else
- int pt_status;
- ptrace_state_t ptrace_state;
-
- 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 0;
-
- if (ptrace_state.pe_report_event & PTRACE_FORK)
- {
- *childpid = ptrace_state.pe_other_pid;
- return 1;
- }
-
- return 0;
-#endif
-}
-
-int
-hpux_has_vforked (int pid, int *childpid)
-{
- /* This request is only available on HPUX 10.0 and later. */
-#if !defined(PT_GET_PROCESS_STATE)
- *childpid = 0;
- return 0;
-
-#else
- int pt_status;
- ptrace_state_t ptrace_state;
-
- 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 0;
-
- if (ptrace_state.pe_report_event & PTRACE_VFORK)
- {
- *childpid = ptrace_state.pe_other_pid;
- return 1;
- }
-
- return 0;
-#endif
-}
-
-int
-child_insert_exec_catchpoint (int pid)
-{
- /* 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. */
- /* ??rehrauer: For the moment, we're always enabling these events,
- and just ignoring them if there's no catchpoint to catch them. */
- return 0;
-#endif
-}
-
-int
-child_remove_exec_catchpoint (int pid)
-{
- /* 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. */
- return 0;
-#endif
-}
-
-int
-hpux_has_execd (int pid, char **execd_pathname)
-{
- /* 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;
-
- 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 0;
-
- if (ptrace_state.pe_report_event & PTRACE_EXEC)
- {
- char *exec_file = target_pid_to_exec_file (pid);
- *execd_pathname = savestring (exec_file, strlen (exec_file));
- return 1;
- }
-
- return 0;
-#endif
-}
-
-int
-child_reported_exec_events_per_exec_call (void)
-{
- return 2; /* ptrace reports the event twice per call. */
-}
-
-int
-hpux_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. */
-
- *kind = TARGET_WAITKIND_SPURIOUS;
- *syscall_id = -1;
- return 0;
-}
-
-char *
-child_pid_to_exec_file (int pid)
-{
- static char exec_file_buffer[1024];
- int pt_status;
- CORE_ADDR top_of_stack;
- char four_chars[4];
- int name_index;
- int i;
- ptid_t saved_inferior_ptid;
- int 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);
- 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
- that DDE uses, of pawing through the process' data
- segment to find the pathname. */
-
- top_of_stack = 0x7b03a000;
- name_index = 0;
- done = 0;
-
- /* 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_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_ptid = saved_inferior_ptid;
- return NULL;
- }
- for (i = 0; i < 4; i++)
- {
- exec_file_buffer[name_index++] = four_chars[i];
- done = (four_chars[i] == '\0');
- if (done)
- break;
- }
- top_of_stack += 4;
- }
-
- if (exec_file_buffer[0] == '\0')
- {
- inferior_ptid = saved_inferior_ptid;
- return NULL;
- }
-
- inferior_ptid = saved_inferior_ptid;
- return exec_file_buffer;
-}
-
-void
-pre_fork_inferior (void)
-{
- int status;
-
- status = pipe (startup_semaphore.parent_channel);
- if (status < 0)
- {
- warning ("error getting parent pipe for startup semaphore");
- return;
- }
-
- status = pipe (startup_semaphore.child_channel);
- if (status < 0)
- {
- warning ("error getting child pipe for startup semaphore");
- return;
- }
-}
-
-
-/* Check to see if the given thread is alive.
-
- This is a no-op, as ptrace doesn't support threads, so we just
- return "TRUE". */
-
-int
-child_thread_alive (ptid_t ptid)
-{
- return 1;
-}
-
-#endif /* ! GDB_NATIVE_HPUX_11 */