Date: Mon, 9 Feb 2004 00:05:08 -0800 (PST) From: John Merryweather Cooper <coop9211@uidaho.edu> To: FreeBSD-gnats-submit@FreeBSD.org Subject: ports/62570: [NEW PORT] devel/fpc-gdb Message-ID: <20040209080508.ECE4ABAA@borgdemon.losaca.adelphia.net> Resent-Message-ID: <200402090810.i198AN3a072648@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 62570
>Category: ports
>Synopsis: [NEW PORT] devel/fpc-gdb
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-ports-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: maintainer-update
>Submitter-Id: current-users
>Arrival-Date: Mon Feb 09 00:10:23 PST 2004
>Closed-Date:
>Last-Modified:
>Originator: John Merryweather Cooper
>Release: FreeBSD 4.9-STABLE i386
>Organization:
>Environment:
System: FreeBSD borgdemon.losaca.adelphia.net 4.9-STABLE FreeBSD 4.9-STABLE #11: Sun Feb 8 00:49:01 PST 2004 root@borgdemon.losaca.adelphia.net:/usr/obj/usr/src/sys/K6-2 i386
>Description:
New port devel/fpc-gdb-5.2.1 is GNU GDB 5.2.1 modified for use
with Free Pascal and to provide static libraries for linking
with editors/fpc-ide.
>How-To-Repeat:
N/A
>Fix:
--- new-port-fpc-gdb begins here ---
# This is a shell archive. Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file". Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
# fpc-gdb
# fpc-gdb/files
# fpc-gdb/files/patch-gdb_i386bsd-nat.c
# fpc-gdb/files/patch-gdb_config_i386_fbsd.mh
# fpc-gdb/files/patch-gdb_config_i386_nm-fbsd.h
# fpc-gdb/files/patch-gdb_config_i386_tm-fbsd.h
# fpc-gdb/files/patch-gdb_freebsd-uthread.c
# fpc-gdb/files/patch-gdb_kvm-fbsd.c
# fpc-gdb/files/patch-gdb_symfile.c
# fpc-gdb/files/patch-gdb_target.c
# fpc-gdb/files/patch-gdb_target.h
# fpc-gdb/files/patch-gdb_version.in
# fpc-gdb/files/patch-gdb_config_alpha_fbsd.mh
# fpc-gdb/Makefile
# fpc-gdb/distinfo
# fpc-gdb/pkg-descr
# fpc-gdb/pkg-plist
#
echo c - fpc-gdb
mkdir -p fpc-gdb > /dev/null 2>&1
echo c - fpc-gdb/files
mkdir -p fpc-gdb/files > /dev/null 2>&1
echo x - fpc-gdb/files/patch-gdb_i386bsd-nat.c
sed 's/^X//' >fpc-gdb/files/patch-gdb_i386bsd-nat.c << 'END-of-fpc-gdb/files/patch-gdb_i386bsd-nat.c'
X--- gdb/i386bsd-nat.c 2003/05/19 07:22:00 1.1
X+++ gdb/i386bsd-nat.c 2003/05/19 07:22:35
X@@ -305,7 +305,7 @@
X /* For some mysterious reason, some of the reserved bits in the
X debug control register get set. Mask these off, otherwise the
X ptrace call below will fail. */
X- dbregs.dr7 &= ~(0x0000fc00);
X+ DBREG_DRX ((&dbregs), 7) = ~(0x0000fc00);
X
X DBREG_DRX ((&dbregs), regnum) = value;
X
X@@ -354,7 +354,7 @@
X return 0;
X #endif
X
X- return dbregs.dr6;
X+ return DBREG_DRX ((&dbregs), 6);
X }
X
X #endif /* PT_GETDBREGS */
END-of-fpc-gdb/files/patch-gdb_i386bsd-nat.c
echo x - fpc-gdb/files/patch-gdb_config_i386_fbsd.mh
sed 's/^X//' >fpc-gdb/files/patch-gdb_config_i386_fbsd.mh << 'END-of-fpc-gdb/files/patch-gdb_config_i386_fbsd.mh'
X--- gdb/config/i386/fbsd.mh Thu Jan 17 20:50:59 2002
X+++ gdb/config/i386/fbsd.mh Mon May 27 18:36:20 2002
X@@ -4,4 +4,4 @@
X
X NAT_FILE= nm-fbsd.h
X # NOTE: Do not spread NATDEPFILES over several lines - it hurts BSD make.
X-NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o solib-svr4.o solib-legacy.o corelow.o core-aout.o core-regset.o i386-nat.o i387-nat.o i386bsd-nat.o i386fbsd-nat.o
X+NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o solib-svr4.o solib-legacy.o corelow.o core-aout.o core-regset.o i386-nat.o i387-nat.o i386bsd-nat.o i386fbsd-nat.o kvm-fbsd.o freebsd-uthread.o xfreemod.o
END-of-fpc-gdb/files/patch-gdb_config_i386_fbsd.mh
echo x - fpc-gdb/files/patch-gdb_config_i386_nm-fbsd.h
sed 's/^X//' >fpc-gdb/files/patch-gdb_config_i386_nm-fbsd.h << 'END-of-fpc-gdb/files/patch-gdb_config_i386_nm-fbsd.h'
X--- gdb/config/i386/nm-fbsd.h Sat Jul 21 13:16:44 2001
X+++ gdb/config/i386/nm-fbsd.h Mon Jun 3 10:04:54 2002
X@@ -148,5 +152,32 @@
X #define ld_2 d_sdt
X
X #endif /* !SVR4_SHARED_LIBS */
X+
X+extern int kernel_debugging;
X+extern int kernel_writablecore;
X+
X+#if __FreeBSD_version >= 500032
X+#define ADDITIONAL_OPTIONS \
X+ {"kernel", no_argument, &kernel_debugging, 1}, \
X+ {"k", no_argument, &kernel_debugging, 1}, \
X+ {"wcore", no_argument, &kernel_writablecore, 1}, \
X+ {"w", no_argument, &kernel_writablecore, 1},
X+
X+#define ADDITIONAL_OPTION_HELP \
X+ "\
X+ --kernel Enable kernel debugging.\n\
X+ --wcore Make core file writable (only works for /dev/mem).\n\
X+ This option only works while debugging a kernel !!\n\
X+"
X+
X+#define DEFAULT_PROMPT kernel_debugging?"(kgdb) ":"(gdb) "
X+
X+/* misuse START_PROGRESS to test whether we're running as kgdb */
X+/* START_PROGRESS is called at the top of main */
X+#undef START_PROGRESS
X+#define START_PROGRESS(STR,N) \
X+ if (!strcmp(STR, "kgdb")) \
X+ kernel_debugging = 1;
X+#endif
X
X #endif /* NM_FBSD_H */
END-of-fpc-gdb/files/patch-gdb_config_i386_nm-fbsd.h
echo x - fpc-gdb/files/patch-gdb_config_i386_tm-fbsd.h
sed 's/^X//' >fpc-gdb/files/patch-gdb_config_i386_tm-fbsd.h << 'END-of-fpc-gdb/files/patch-gdb_config_i386_tm-fbsd.h'
X--- gdb/config/i386/tm-fbsd.h Sat Jul 28 10:03:38 2001
X+++ gdb/config/i386/tm-fbsd.h Fri Jun 7 08:32:14 2002
X@@ -41,38 +45,42 @@
X /* Support for longjmp. */
X
X /* Details about jmp_buf. It's supposed to be an array of integers. */
X-
X-#define JB_ELEMENT_SIZE 4 /* Size of elements in jmp_buf. */
X-#define JB_PC 0 /* Array index of saved PC. */
X-
X-/* Figure out where the longjmp will land. Store the address that
X- longjmp will jump to in *ADDR, and return non-zero if successful. */
X-
X #define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
X-extern int get_longjmp_target (CORE_ADDR *addr);
X
X
X-/* Support for signal handlers. */
X+/* On FreeBSD, sigtramp has size 0x18 and is immediately below the
X+ ps_strings struct which has size 0x10 and is at the top of the
X+ user stack. */
X+
X+#undef SIGTRAMP_START
X+#undef SIGTRAMP_END
X+#define SIGTRAMP_START(pc) 0xbfbfdfd8
X+#define SIGTRAMP_END(pc) 0xbfbfdff0
X
X-#define IN_SIGTRAMP(pc, name) i386bsd_in_sigtramp (pc, name)
X-extern int i386bsd_in_sigtramp (CORE_ADDR pc, char *name);
X-
X-/* These defines allow the recognition of sigtramps as a function name
X- <sigtramp>.
X-
X- FIXME: kettenis/2001-07-13: These should be added to the target
X- vector and turned into functions when we go "multi-arch". */
X-
X-#define SIGTRAMP_START(pc) i386bsd_sigtramp_start
X-#define SIGTRAMP_END(pc) i386bsd_sigtramp_end
X extern CORE_ADDR i386bsd_sigtramp_start;
X extern CORE_ADDR i386bsd_sigtramp_end;
X+extern CORE_ADDR fbsd_kern_frame_saved_pc(struct frame_info *fr);
X
X /* Override FRAME_SAVED_PC to enable the recognition of signal handlers. */
X
X #undef FRAME_SAVED_PC
X-#define FRAME_SAVED_PC(frame) i386bsd_frame_saved_pc (frame)
X-extern CORE_ADDR i386bsd_frame_saved_pc (struct frame_info *frame);
X+#if __FreeBSD_version >= 500032
X+#define FRAME_SAVED_PC(FRAME) \
X+ (kernel_debugging ? fbsd_kern_frame_saved_pc(FRAME) : \
X+ (((FRAME)->signal_handler_caller \
X+ ? sigtramp_saved_pc (FRAME) \
X+ : read_memory_integer ((FRAME)->frame + 4, 4)) \
X+ ))
X+#else
X+#define FRAME_SAVED_PC(FRAME) \
X+ (((FRAME)->signal_handler_caller \
X+ ? sigtramp_saved_pc (FRAME) \
X+ : read_memory_integer ((FRAME)->frame + 4, 4)) \
X+ )
X+#endif
X+
X+/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
X+#define SIGCONTEXT_PC_OFFSET 20
X
X
X /* Shared library support. */
END-of-fpc-gdb/files/patch-gdb_config_i386_tm-fbsd.h
echo x - fpc-gdb/files/patch-gdb_freebsd-uthread.c
sed 's/^X//' >fpc-gdb/files/patch-gdb_freebsd-uthread.c << 'END-of-fpc-gdb/files/patch-gdb_freebsd-uthread.c'
X$FreeBSD: ports/devel/gdb52/files/patch-gdb_freebsd-uthread.c,v 1.2 2002/06/08 00:15:19 obrien Exp $
X
X--- gdb/freebsd-uthread.c.orig Sat May 25 13:05:56 2002
X+++ gdb/freebsd-uthread.c Sat May 25 13:09:09 2002
X@@ -0,0 +1,915 @@
X+/* $FreeBSD: ports/devel/gdb52/files/patch-gdb_freebsd-uthread.c,v 1.2 2002/06/08 00:15:19 obrien Exp $ */
X+/* Low level interface for debugging FreeBSD user threads for GDB, the GNU debugger.
X+ Copyright 1996, 1999 Free Software Foundation, Inc.
X+
X+This file is part of GDB.
X+
X+This program is free software; you can redistribute it and/or modify
X+it under the terms of the GNU General Public License as published by
X+the Free Software Foundation; either version 2 of the License, or
X+(at your option) any later version.
X+
X+This program is distributed in the hope that it will be useful,
X+but WITHOUT ANY WARRANTY; without even the implied warranty of
X+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X+GNU General Public License for more details.
X+
X+You should have received a copy of the GNU General Public License
X+along with this program; if not, write to the Free Software
X+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
X+
X+/* This module implements a sort of half target that sits between the
X+ machine-independent parts of GDB and the ptrace interface (infptrace.c) to
X+ provide access to the FreeBSD user-mode thread implementation.
X+
X+ FreeBSD threads are true user-mode threads, which are invoked via
X+ the pthread_* interfaces. These are mostly implemented in
X+ user-space, with all thread context kept in various structures that
X+ live in the user's heap. For the most part, the kernel has no
X+ knowlege of these threads.
X+
X+ Based largely on hpux-thread.c
X+
X+ */
X+
X+
X+#include "defs.h"
X+#include <sys/queue.h>
X+#include <signal.h>
X+#include <setjmp.h>
X+#include "gdbthread.h"
X+#include "target.h"
X+#include "inferior.h"
X+#include <fcntl.h>
X+#include <ucontext.h>
X+#include <unistd.h>
X+#include <sys/stat.h>
X+#include "gdbcore.h"
X+
X+extern int child_suppress_run;
X+extern struct target_ops child_ops; /* target vector for inftarg.c */
X+
X+extern void _initialize_freebsd_uthread PARAMS ((void));
X+
X+/* Set to true while we are part-way through attaching */
X+static int freebsd_uthread_attaching;
X+
X+static int freebsd_uthread_active = 0;
X+static CORE_ADDR P_thread_list;
X+static CORE_ADDR P_thread_run;
X+
X+/* Pointer to the next function on the objfile event chain. */
X+static void (*target_new_objfile_chain) (struct objfile *objfile);
X+
X+static void freebsd_uthread_resume PARAMS ((ptid_t pid, int step,
X+ enum target_signal signo));
X+
X+static void init_freebsd_uthread_ops PARAMS ((void));
X+
X+static struct target_ops freebsd_uthread_ops;
X+
X+static ptid_t find_active_ptid PARAMS ((void));
X+
X+struct cached_pthread {
X+ u_int64_t uniqueid;
X+ int state;
X+ CORE_ADDR name;
X+ union {
X+ ucontext_t uc;
X+ jmp_buf jb;
X+ } ctx;
X+};
X+
X+static ptid_t cached_ptid;
X+static struct cached_pthread cached_pthread;
X+static CORE_ADDR cached_pthread_addr;
X+
X+LIST_HEAD(idmaplist, idmap);
X+
X+struct idmap {
X+ LIST_ENTRY(idmap) link;
X+ u_int64_t uniqueid;
X+ int tid;
X+};
X+
X+#define MAPHASH_SIZE 257
X+#define TID_MIN 1
X+#define TID_MAX 16383
X+
X+static int tid_to_hash[TID_MAX + 1]; /* set to map_hash index */
X+static struct idmaplist map_hash[MAPHASH_SIZE];
X+static int next_free_tid = TID_MIN; /* first available tid */
X+static int last_free_tid = TID_MIN; /* first unavailable */
X+
X+static CORE_ADDR P_thread_next_offset;
X+static CORE_ADDR P_thread_uniqueid_offset;
X+static CORE_ADDR P_thread_state_offset;
X+static CORE_ADDR P_thread_name_offset;
X+static CORE_ADDR P_thread_ctx_offset;
X+static CORE_ADDR P_thread_PS_RUNNING_value;
X+static CORE_ADDR P_thread_PS_DEAD_value;
X+
X+static int next_offset;
X+static int uniqueid_offset;
X+static int state_offset;
X+static int name_offset;
X+static int ctx_offset;
X+static int PS_RUNNING_value;
X+static int PS_DEAD_value;
X+
X+#define UNIQUEID_HASH(id) (id % MAPHASH_SIZE)
X+#define TID_ADD1(tid) (((tid) + 1) == TID_MAX + 1 \
X+ ? TID_MIN : (tid) + 1)
X+#define IS_TID_FREE(tid) (tid_to_hash[tid] == -1)
X+
X+static int
X+get_new_tid(int h)
X+{
X+ int tid = next_free_tid;
X+
X+ tid_to_hash[tid] = h;
X+ next_free_tid = TID_ADD1(next_free_tid);
X+ if (next_free_tid == last_free_tid)
X+ {
X+ int i;
X+
X+ for (i = last_free_tid; TID_ADD1(i) != last_free_tid; i = TID_ADD1(i))
X+ if (IS_TID_FREE(i))
X+ break;
X+ if (TID_ADD1(i) == last_free_tid)
X+ {
X+ error("too many threads");
X+ return 0;
X+ }
X+ next_free_tid = i;
X+ for (i = TID_ADD1(i); IS_TID_FREE(i); i = TID_ADD1(i))
X+ ;
X+ last_free_tid = i;
X+ }
X+
X+ return tid;
X+}
X+
X+static ptid_t
X+find_ptid(u_int64_t uniqueid)
X+{
X+ int h = UNIQUEID_HASH(uniqueid);
X+ struct idmap *im;
X+
X+ LIST_FOREACH(im, &map_hash[h], link)
X+ if (im->uniqueid == uniqueid)
X+ return MERGEPID(PIDGET(inferior_ptid), im->tid);
X+
X+ im = xmalloc(sizeof(struct idmap));
X+ im->uniqueid = uniqueid;
X+ im->tid = get_new_tid(h);
X+ LIST_INSERT_HEAD(&map_hash[h], im, link);
X+
X+ return MERGEPID(PIDGET(inferior_ptid), im->tid);
X+}
X+
X+static void
X+free_ptid(ptid_t ptid)
X+{
X+ int tid = TIDGET(ptid);
X+ int h = tid_to_hash[tid];
X+ struct idmap *im;
X+
X+ if (!tid) return;
X+
X+ LIST_FOREACH(im, &map_hash[h], link)
X+ if (im->tid == tid)
X+ break;
X+
X+ if (!im) return;
X+
X+ LIST_REMOVE(im, link);
X+ tid_to_hash[tid] = -1;
X+ free(im);
X+}
X+
X+#define READ_OFFSET(field) read_memory(P_thread_##field##_offset, \
X+ (char *) &field##_offset, \
X+ sizeof(field##_offset))
X+
X+#define READ_VALUE(name) read_memory(P_thread_##name##_value, \
X+ (char *) &name##_value, \
X+ sizeof(name##_value))
X+
X+static void
X+read_thread_offsets (void)
X+{
X+ READ_OFFSET(next);
X+ READ_OFFSET(uniqueid);
X+ READ_OFFSET(state);
X+ READ_OFFSET(name);
X+ READ_OFFSET(ctx);
X+
X+ READ_VALUE(PS_RUNNING);
X+ READ_VALUE(PS_DEAD);
X+}
X+
X+#define READ_FIELD(ptr, T, field, result) \
X+ read_memory ((ptr) + field##_offset, (char *) &(result), sizeof result)
X+
X+static u_int64_t
X+read_pthread_uniqueid (CORE_ADDR ptr)
X+{
X+ u_int64_t uniqueid;
X+ READ_FIELD(ptr, u_int64_t, uniqueid, uniqueid);
X+ return uniqueid;
X+}
X+
X+static CORE_ADDR
X+read_pthread_next (CORE_ADDR ptr)
X+{
X+ CORE_ADDR next;
X+ READ_FIELD(ptr, CORE_ADDR, next, next);
X+ return next;
X+}
X+
X+static void
X+read_cached_pthread (CORE_ADDR ptr, struct cached_pthread *cache)
X+{
X+ READ_FIELD(ptr, u_int64_t, uniqueid, cache->uniqueid);
X+ READ_FIELD(ptr, int, state, cache->state);
X+ READ_FIELD(ptr, CORE_ADDR, name, cache->name);
X+ READ_FIELD(ptr, ucontext_t, ctx, cache->ctx);
X+}
X+
X+static ptid_t
X+find_active_ptid (void)
X+{
X+ CORE_ADDR ptr;
X+
X+ read_memory ((CORE_ADDR)P_thread_run,
X+ (char *)&ptr,
X+ sizeof ptr);
X+
X+ return find_ptid(read_pthread_uniqueid(ptr));
X+}
X+
X+static CORE_ADDR find_pthread_addr PARAMS ((ptid_t ptid));
X+static struct cached_pthread * find_pthread PARAMS ((ptid_t ptid));
X+
X+static CORE_ADDR
X+find_pthread_addr (ptid_t ptid)
X+{
X+ CORE_ADDR ptr;
X+
X+ if (ptid_equal(ptid, cached_ptid))
X+ return cached_pthread_addr;
X+
X+ read_memory ((CORE_ADDR)P_thread_list,
X+ (char *)&ptr,
X+ sizeof ptr);
X+
X+ while (ptr != 0)
X+ {
X+ if (ptid_equal(find_ptid(read_pthread_uniqueid(ptr)), ptid))
X+ {
X+ cached_ptid = ptid;
X+ cached_pthread_addr = ptr;
X+ read_cached_pthread(ptr, &cached_pthread);
X+ return ptr;
X+ }
X+ ptr = read_pthread_next(ptr);
X+ }
X+
X+ return NULL;
X+}
X+
X+static struct cached_pthread *
X+find_pthread (ptid_t ptid)
X+{
X+ CORE_ADDR ptr;
X+
X+ if (ptid_equal(ptid, cached_ptid))
X+ return &cached_pthread;
X+
X+ read_memory ((CORE_ADDR)P_thread_list,
X+ (char *)&ptr,
X+ sizeof ptr);
X+
X+ while (ptr != 0)
X+ {
X+ if (ptid_equal(find_ptid(read_pthread_uniqueid(ptr)), ptid))
X+ {
X+ cached_ptid = ptid;
X+ cached_pthread_addr = ptr;
X+ read_cached_pthread(ptr, &cached_pthread);
X+ return &cached_pthread;
X+ }
X+ ptr = read_pthread_next(ptr);
X+ }
X+
X+#if 0
X+ error ("Can't find pthread %d,%d", PIDGET(ptid), TIDGET(ptid));
X+#endif
X+ return NULL;
X+}
X+
X+
X+/* Most target vector functions from here on actually just pass through to
X+ inftarg.c, as they don't need to do anything specific for threads. */
X+
X+/* ARGSUSED */
X+static void
X+freebsd_uthread_open (char *arg, int from_tty)
X+{
X+ child_ops.to_open (arg, from_tty);
X+}
X+
X+/* Attach to process PID, then initialize for debugging it
X+ and wait for the trace-trap that results from attaching. */
X+
X+static void
X+freebsd_uthread_attach (char *args, int from_tty)
X+{
X+ child_ops.to_attach (args, from_tty);
X+ push_target (&freebsd_uthread_ops);
X+ freebsd_uthread_attaching = 1;
X+}
X+
X+/* After an attach, see if the target is threaded */
X+
X+static void
X+freebsd_uthread_post_attach (int pid)
X+{
X+ if (freebsd_uthread_active)
X+ {
X+ read_thread_offsets ();
X+ inferior_ptid = find_active_ptid ();
X+ add_thread (inferior_ptid);
X+ }
X+ else
X+ {
X+ unpush_target (&freebsd_uthread_ops);
X+ push_target (&child_ops);
X+ }
X+
X+ freebsd_uthread_attaching = 0;
X+}
X+
X+/* Take a program previously attached to and detaches it.
X+ The program resumes execution and will no longer stop
X+ on signals, etc. We'd better not have left any breakpoints
X+ in the program or it'll die when it hits one. For this
X+ to work, it may be necessary for the process to have been
X+ previously attached. It *might* work if the program was
X+ started via the normal ptrace (PTRACE_TRACEME). */
X+
X+static void
X+freebsd_uthread_detach (char *args, int from_tty)
X+{
X+ child_ops.to_detach (args, from_tty);
X+}
X+
X+/* Resume execution of process PID. If STEP is nozero, then
X+ just single step it. If SIGNAL is nonzero, restart it with that
X+ signal activated. We may have to convert pid from a thread-id to an LWP id
X+ for procfs. */
X+
X+static void
X+freebsd_uthread_resume (ptid_t ptid, int step, enum target_signal signo)
X+{
X+ if (freebsd_uthread_attaching)
X+ {
X+ child_ops.to_resume (ptid, step, signo);
X+ return;
X+ }
X+
X+ child_ops.to_resume (ptid, step, signo);
X+ cached_ptid = MERGEPID(0, 0);
X+}
X+
X+/* Wait for any threads to stop. We may have to convert PID from a thread id
X+ to a LWP id, and vice versa on the way out. */
X+
X+static ptid_t
X+freebsd_uthread_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
X+{
X+ ptid_t rtnval;
X+
X+ if (freebsd_uthread_attaching)
X+ {
X+ return child_ops.to_wait (ptid, ourstatus);
X+ }
X+
X+ rtnval = child_ops.to_wait (ptid, ourstatus);
X+
X+ if (PIDGET(rtnval) >= 0)
X+ {
X+ rtnval = find_active_ptid ();
X+ if (!in_thread_list (rtnval))
X+ add_thread (rtnval);
X+ }
X+
X+ return rtnval;
X+}
X+
X+#ifdef __i386__
X+
X+static char sigmap[MAX_NUM_REGS] = /* map reg to sigcontext */
X+{
X+ 12, /* eax */
X+ 11, /* ecx */
X+ 10, /* edx */
X+ 9, /* ebx */
X+ 8, /* esp */
X+ 7, /* ebp */
X+ 6, /* esi */
X+ 5, /* edi */
X+ 15, /* eip */
X+ 17, /* eflags */
X+ 16, /* cs */
X+ 19, /* ss */
X+ 4, /* ds */
X+ 3, /* es */
X+ 2, /* fs */
X+ 1, /* gs */
X+ -1, -1, -1, -1, -1, -1, -1, /* st0-st7 */
X+ -1, -1, -1, -1, -1, -1, -1, /* fctrl-fop */
X+ -1, -1, -1, -1, -1, -1, -1, /* xmm0-xmm7 */
X+ -1, /* mxcsr */
X+};
X+
X+static char jmpmap[MAX_NUM_REGS] = /* map reg to jmp_buf */
X+{
X+ 6, /* eax */
X+ -1, /* ecx */
X+ -1, /* edx */
X+ 1, /* ebx */
X+ 2, /* esp */
X+ 3, /* ebp */
X+ 4, /* esi */
X+ 5, /* edi */
X+ 0, /* eip */
X+ -1, /* eflags */
X+ -1, /* cs */
X+ -1, /* ss */
X+ -1, /* ds */
X+ -1, /* es */
X+ -1, /* fs */
X+ -1, /* gs */
X+ -1, -1, -1, -1, -1, -1, -1, /* st0-st7 */
X+ -1, -1, -1, -1, -1, -1, -1, /* fctrl-fop */
X+ -1, -1, -1, -1, -1, -1, -1, /* xmm0-xmm7 */
X+ -1, /* mxcsr */
X+};
X+
X+#endif
X+
X+#ifdef __alpha__
X+
X+static char sigmap[NUM_REGS] = /* map reg to sigcontext */
X+{
X+ 1, 2, 3, 4, 5, 6, 7, 8, /* v0 - t6 */
X+ 9, 10, 11, 12, 13, 14, 15, 16, /* t7 - fp */
X+ 17, 18, 19, 20, 21, 22, 23, 24, /* a0 - t9 */
X+ 25, 26, 27, 28, 29, 30, 31, 32, /* t10 - zero */
X+ 38, 39, 40, 41, 42, 43, 44, 45, /* f0 - f7 */
X+ 46, 47, 48, 49, 50, 51, 52, 53, /* f8 - f15 */
X+ 54, 55, 56, 57, 58, 59, 60, 61, /* f16 - f23 */
X+ 62, 63, 64, 65, 66, 67, 68, 69, /* f24 - f31 */
X+ 33, -1 /* pc, vfp */
X+};
X+static char jmpmap[NUM_REGS] = {
X+ 4, 5, 6, 7, 8, 9, 10, 11, /* v0 - t6 */
X+ 12, 13, 14, 15, 16, 17, 18, 19, /* t7 - fp */
X+ 20, 21, 22, 23, 24, 25, 26, 27, /* a0 - t9 */
X+ 28, 29, 30, 31, 32, 33, 34, 35, /* t10 - zero */
X+ 37, 38, 39, 40, 41, 42, 43, 44, /* f0 - f7 */
X+ 45, 46, 47, 48, 49, 50, 51, 52, /* f8 - f15 */
X+ 53, 54, 55, 56, 57, 58, 59, 60, /* f16 - f23 */
X+ 61, 62, 63, 64, 65, 66, 67, 68, /* f24 - f31 */
X+ 2, -1, /* pc, vfp */
X+};
X+
X+#endif
X+
X+static void
X+freebsd_uthread_fetch_registers (int regno)
X+{
X+ struct cached_pthread *thread;
X+ int active;
X+ int first_regno, last_regno;
X+ register_t *regbase;
X+ char *regmap;
X+
X+ if (freebsd_uthread_attaching || TIDGET(inferior_ptid) == 0)
X+ {
X+ child_ops.to_fetch_registers (regno);
X+ return;
X+ }
X+
X+ thread = find_pthread (inferior_ptid);
X+ active = (ptid_equal(inferior_ptid, find_active_ptid()));
X+
X+ if (active)
X+ {
X+ child_ops.to_fetch_registers (regno);
X+ return;
X+ }
X+
X+ if (regno == -1)
X+ {
X+ first_regno = 0;
X+ last_regno = NUM_REGS - 1;
X+ }
X+ else
X+ {
X+ first_regno = regno;
X+ last_regno = regno;
X+ }
X+
X+ regbase = (register_t*) &thread->ctx.jb[0];
X+ regmap = jmpmap;
X+
X+ for (regno = first_regno; regno <= last_regno; regno++)
X+ {
X+ if (regmap[regno] == -1)
X+ child_ops.to_fetch_registers (regno);
X+ else
X+ if (thread)
X+ supply_register (regno, (char*) ®base[regmap[regno]]);
X+ else
X+ supply_register (regno, NULL);
X+ }
X+}
X+
X+static void
X+freebsd_uthread_store_registers (int regno)
X+{
X+ struct cached_pthread *thread;
X+ CORE_ADDR ptr;
X+ int first_regno, last_regno;
X+ u_int32_t *regbase;
X+ char *regmap;
X+
X+ if (freebsd_uthread_attaching)
X+ {
X+ child_ops.to_store_registers (regno);
X+ return;
X+ }
X+
X+ thread = find_pthread (inferior_ptid);
X+
X+ if (thread->state == PS_RUNNING_value)
X+ {
X+ child_ops.to_store_registers (regno);
X+ return;
X+ }
X+
X+ if (regno == -1)
X+ {
X+ first_regno = 0;
X+ last_regno = NUM_REGS - 1;
X+ }
X+ else
X+ {
X+ first_regno = regno;
X+ last_regno = regno;
X+ }
X+
X+ regbase = (u_int32_t*) &thread->ctx.jb[0];
X+ regmap = jmpmap;
X+
X+ ptr = find_pthread_addr (inferior_ptid);
X+ for (regno = first_regno; regno <= last_regno; regno++)
X+ {
X+ if (regmap[regno] == -1)
X+ child_ops.to_store_registers (regno);
X+ else
X+ {
X+ u_int32_t *reg = ®base[regmap[regno]];
X+ int off;
X+
X+ /* Hang onto cached value */
X+ memcpy(reg, registers + REGISTER_BYTE (regno),
X+ REGISTER_RAW_SIZE (regno));
X+
X+ /* And push out to inferior */
X+ off = (char *) reg - (char *) thread;
X+ write_memory (ptr + off,
X+ registers + REGISTER_BYTE (regno),
X+ REGISTER_RAW_SIZE (regno));
X+ }
X+ }
X+}
X+
X+/* Get ready to modify the registers array. On machines which store
X+ individual registers, this doesn't need to do anything. On machines
X+ which store all the registers in one fell swoop, this makes sure
X+ that registers contains all the registers from the program being
X+ debugged. */
X+
X+static void
X+freebsd_uthread_prepare_to_store (void)
X+{
X+ child_ops.to_prepare_to_store ();
X+}
X+
X+static int
X+freebsd_uthread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
X+ int dowrite, struct mem_attrib *attrib,
X+ struct target_ops *target)
X+{
X+ return child_ops.to_xfer_memory (memaddr, myaddr, len, dowrite,
X+ attrib, target);
X+}
X+
X+/* Print status information about what we're accessing. */
X+
X+static void
X+freebsd_uthread_files_info (struct target_ops *ignore)
X+{
X+ child_ops.to_files_info (ignore);
X+}
X+
X+static void
X+freebsd_uthread_kill_inferior (void)
X+{
X+ child_ops.to_kill ();
X+}
X+
X+static void
X+freebsd_uthread_notice_signals (ptid_t ptid)
X+{
X+ child_ops.to_notice_signals (ptid);
X+}
X+
X+/* Fork an inferior process, and start debugging it with /proc. */
X+
X+static void
X+freebsd_uthread_create_inferior (char *exec_file, char *allargs, char **env)
X+{
X+ child_ops.to_create_inferior (exec_file, allargs, env);
X+
X+ if (PIDGET(inferior_ptid) && freebsd_uthread_active)
X+ {
X+ read_thread_offsets ();
X+ push_target (&freebsd_uthread_ops);
X+ inferior_ptid = find_active_ptid ();
X+ add_thread (inferior_ptid);
X+ }
X+}
X+
X+/* This routine is called to find out if the inferior is using threads.
X+ We check for the _thread_run and _thread_list globals. */
X+
X+void
X+freebsd_uthread_new_objfile (struct objfile *objfile)
X+{
X+ struct minimal_symbol *ms;
X+
X+ if (!objfile)
X+ {
X+ freebsd_uthread_active = 0;
X+ return;
X+ }
X+
X+ ms = lookup_minimal_symbol ("_thread_run", NULL, objfile);
X+
X+ if (!ms)
X+ return;
X+
X+ P_thread_run = SYMBOL_VALUE_ADDRESS (ms);
X+
X+ ms = lookup_minimal_symbol ("_thread_list", NULL, objfile);
X+
X+ if (!ms)
X+ return;
X+
X+ P_thread_list = SYMBOL_VALUE_ADDRESS (ms);
X+
X+#define OFFSET_SYM(field) "_thread_" #field "_offset"
X+#define LOOKUP_OFFSET(field) \
X+ do { \
X+ ms = lookup_minimal_symbol (OFFSET_SYM(field), NULL, objfile); \
X+ if (!ms) \
X+ return; \
X+ P_thread_##field##_offset = SYMBOL_VALUE_ADDRESS (ms); \
X+ } while (0);
X+
X+#define VALUE_SYM(name) "_thread_" #name "_value"
X+#define LOOKUP_VALUE(name) \
X+ do { \
X+ ms = lookup_minimal_symbol (VALUE_SYM(name), NULL, objfile); \
X+ if (!ms) \
X+ return; \
X+ P_thread_##name##_value = SYMBOL_VALUE_ADDRESS (ms); \
X+ } while (0);
X+
X+ LOOKUP_OFFSET(next);
X+ LOOKUP_OFFSET(uniqueid);
X+ LOOKUP_OFFSET(state);
X+ LOOKUP_OFFSET(name);
X+ LOOKUP_OFFSET(ctx);
X+
X+ LOOKUP_VALUE(PS_RUNNING);
X+ LOOKUP_VALUE(PS_DEAD);
X+
X+ freebsd_uthread_active = 1;
X+}
X+
X+/* Clean up after the inferior dies. */
X+
X+static void
X+freebsd_uthread_mourn_inferior ()
X+{
X+ child_ops.to_mourn_inferior ();
X+ unpush_target (&freebsd_uthread_ops);
X+}
X+
X+/* Mark our target-struct as eligible for stray "run" and "attach" commands. */
X+
X+static int
X+freebsd_uthread_can_run ()
X+{
X+ return child_suppress_run;
X+}
X+
X+static int
X+freebsd_uthread_thread_alive (ptid_t ptid)
X+{
X+ struct cached_pthread *thread;
X+ int ret = 0;
X+
X+ if (freebsd_uthread_attaching)
X+ return 1;
X+
X+ /*
X+ * We can get called from child_ops.to_wait() which passes the underlying
X+ * pid (without a thread number).
X+ */
X+ if (TIDGET(ptid) == 0)
X+ return 1;
X+
X+ if (find_pthread_addr (ptid) != 0)
X+ {
X+ thread = find_pthread (ptid);
X+ ret = (thread->state != PS_DEAD_value);
X+ }
X+
X+ if (!ret)
X+ free_ptid(ptid);
X+
X+ return ret;
X+}
X+
X+static void
X+freebsd_uthread_stop (void)
X+{
X+ child_ops.to_stop ();
X+}
X+
X+static void
X+freebsd_uthread_find_new_threads (void)
X+{
X+ CORE_ADDR ptr;
X+ int state;
X+ u_int64_t uniqueid;
X+
X+ read_memory ((CORE_ADDR)P_thread_list,
X+ (char *)&ptr,
X+ sizeof ptr);
X+
X+ while (ptr != 0)
X+ {
X+ READ_FIELD(ptr, int, state, state);
X+ READ_FIELD(ptr, u_int64_t, uniqueid, uniqueid);
X+ if (state != PS_DEAD_value &&
X+ !in_thread_list (find_ptid(uniqueid)))
X+ add_thread (find_ptid(uniqueid));
X+ ptr = read_pthread_next(ptr);
X+ }
X+}
X+
X+/* MUST MATCH enum pthread_state */
X+static const char *statenames[] = {
X+ "RUNNING",
X+ "SIGTHREAD",
X+ "MUTEX_WAIT",
X+ "COND_WAIT",
X+ "FDLR_WAIT",
X+ "FDLW_WAIT",
X+ "FDR_WAIT",
X+ "FDW_WAIT",
X+ "POLL_WAIT",
X+ "FILE_WAIT",
X+ "SELECT_WAIT",
X+ "SLEEP_WAIT",
X+ "WAIT_WAIT",
X+ "SIGSUSPEND",
X+ "SIGWAIT",
X+ "SPINBLOCK",
X+ "JOIN",
X+ "SUSPENDED",
X+ "DEAD",
X+ "DEADLOCK",
X+};
X+
X+#if 0
X+
X+static int
X+freebsd_uthread_get_thread_info (ref, selection, info)
X+ gdb_threadref *ref;
X+ int selection;
X+ struct gdb_ext_thread_info *info;
X+{
X+ int pid = *ref;
X+ struct cached_pthread *thread = find_pthread (pid);
X+ struct cleanup *old_chain;
X+
X+ old_chain = save_inferior_pid ();
X+ inferior_pid = main_pid;
X+
X+ memset(&info->threadid, 0, OPAQUETHREADBYTES);
X+
X+ memcpy(&info->threadid, ref, sizeof *ref);
X+ info->active = thread->state == PS_RUNNING_value;
X+ strcpy(info->display, statenames[thread->state]);
X+ if (thread->name)
X+ read_memory ((CORE_ADDR) thread->name, info->shortname, 32);
X+ else
X+ strcpy(info->shortname, "");
X+
X+ do_cleanups (old_chain);
X+ return (0);
X+}
X+
X+#endif
X+
X+char *
X+freebsd_uthread_pid_to_str (ptid_t ptid)
X+{
X+ static char buf[30];
X+
X+ if (STREQ (current_target.to_shortname, "freebsd-uthreads"))
X+ sprintf (buf, "Process %d, Thread %ld",
X+ PIDGET(ptid), TIDGET(ptid));
X+ else
X+ sprintf (buf, "Process %d", PIDGET(ptid));
X+
X+ return buf;
X+}
X+
X+
X+static void
X+init_freebsd_uthread_ops ()
X+{
X+ freebsd_uthread_ops.to_shortname = "freebsd-uthreads";
X+ freebsd_uthread_ops.to_longname = "FreeBSD uthreads";
X+ freebsd_uthread_ops.to_doc = "FreeBSD user threads support.";
X+ freebsd_uthread_ops.to_open = freebsd_uthread_open;
X+ freebsd_uthread_ops.to_attach = freebsd_uthread_attach;
X+ freebsd_uthread_ops.to_post_attach = freebsd_uthread_post_attach;
X+ freebsd_uthread_ops.to_detach = freebsd_uthread_detach;
X+ freebsd_uthread_ops.to_resume = freebsd_uthread_resume;
X+ freebsd_uthread_ops.to_wait = freebsd_uthread_wait;
X+ freebsd_uthread_ops.to_fetch_registers = freebsd_uthread_fetch_registers;
X+ freebsd_uthread_ops.to_store_registers = freebsd_uthread_store_registers;
X+ freebsd_uthread_ops.to_prepare_to_store = freebsd_uthread_prepare_to_store;
X+ freebsd_uthread_ops.to_xfer_memory = freebsd_uthread_xfer_memory;
X+ freebsd_uthread_ops.to_files_info = freebsd_uthread_files_info;
X+ freebsd_uthread_ops.to_insert_breakpoint = memory_insert_breakpoint;
X+ freebsd_uthread_ops.to_remove_breakpoint = memory_remove_breakpoint;
X+ freebsd_uthread_ops.to_terminal_init = terminal_init_inferior;
X+ freebsd_uthread_ops.to_terminal_inferior = terminal_inferior;
X+ freebsd_uthread_ops.to_terminal_ours_for_output = terminal_ours_for_output;
X+ freebsd_uthread_ops.to_terminal_ours = terminal_ours;
X+ freebsd_uthread_ops.to_terminal_info = child_terminal_info;
X+ freebsd_uthread_ops.to_kill = freebsd_uthread_kill_inferior;
X+ freebsd_uthread_ops.to_create_inferior = freebsd_uthread_create_inferior;
X+ freebsd_uthread_ops.to_mourn_inferior = freebsd_uthread_mourn_inferior;
X+ freebsd_uthread_ops.to_can_run = freebsd_uthread_can_run;
X+ freebsd_uthread_ops.to_notice_signals = freebsd_uthread_notice_signals;
X+ freebsd_uthread_ops.to_thread_alive = freebsd_uthread_thread_alive;
X+ freebsd_uthread_ops.to_stop = freebsd_uthread_stop;
X+ freebsd_uthread_ops.to_stratum = process_stratum;
X+ freebsd_uthread_ops.to_has_all_memory = 1;
X+ freebsd_uthread_ops.to_has_memory = 1;
X+ freebsd_uthread_ops.to_has_stack = 1;
X+ freebsd_uthread_ops.to_has_registers = 1;
X+ freebsd_uthread_ops.to_has_execution = 1;
X+ freebsd_uthread_ops.to_has_thread_control = 0;
X+ freebsd_uthread_ops.to_magic = OPS_MAGIC;
X+ freebsd_uthread_ops.to_find_new_threads = freebsd_uthread_find_new_threads;
X+ freebsd_uthread_ops.to_pid_to_str = freebsd_uthread_pid_to_str;
X+#if 0
X+ freebsd_uthread_vec.get_thread_info = freebsd_uthread_get_thread_info;
X+#endif
X+}
X+
X+void
X+_initialize_freebsd_uthread ()
X+{
X+ init_freebsd_uthread_ops ();
X+ add_target (&freebsd_uthread_ops);
X+
X+ target_new_objfile_chain = target_new_objfile_hook;
X+ target_new_objfile_hook = freebsd_uthread_new_objfile;
X+
X+ child_suppress_run = 1;
X+}
X
END-of-fpc-gdb/files/patch-gdb_freebsd-uthread.c
echo x - fpc-gdb/files/patch-gdb_kvm-fbsd.c
sed 's/^X//' >fpc-gdb/files/patch-gdb_kvm-fbsd.c << 'END-of-fpc-gdb/files/patch-gdb_kvm-fbsd.c'
X--- gdb/kvm-fbsd.c Mon Jun 3 11:32:24 2002
X+++ gdb/kvm-fbsd.c Mon Jun 3 11:30:35 2002
X@@ -0,0 +1,1055 @@
X+/* Live and postmortem kernel debugging functions for FreeBSD.
X+ Copyright 1996 Free Software Foundation, Inc.
X+
X+This file is part of GDB.
X+
X+This program is free software; you can redistribute it and/or modify
X+it under the terms of the GNU General Public License as published by
X+the Free Software Foundation; either version 2 of the License, or
X+(at your option) any later version.
X+
X+This program is distributed in the hope that it will be useful,
X+but WITHOUT ANY WARRANTY; without even the implied warranty of
X+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X+GNU General Public License for more details.
X+
X+You should have received a copy of the GNU General Public License
X+along with this program; if not, write to the Free Software
X+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
X+
X+/* $FreeBSD: ports/devel/gdb52/files/patch-gdb_kvm-fbsd.c,v 1.1 2002/06/06 03:56:34 mp Exp $ */
X+
X+#include "defs.h"
X+
X+#include <ctype.h>
X+#include <errno.h>
X+#include <signal.h>
X+#include <fcntl.h>
X+#include <paths.h>
X+#include <sys/sysctl.h>
X+#include <sys/param.h>
X+#include <sys/time.h>
X+#include <sys/proc.h>
X+#include <sys/user.h>
X+#include "frame.h" /* required by inferior.h */
X+#include "inferior.h"
X+#include "symtab.h"
X+#include "symfile.h"
X+#include "objfiles.h"
X+#include "command.h"
X+#include "bfd.h"
X+#include "target.h"
X+#include "gdbcore.h"
X+#include <sys/stat.h>
X+#include <unistd.h>
X+#include <vm/vm.h>
X+#include <vm/vm_param.h>
X+
X+#include <machine/vmparam.h>
X+#include <machine/pcb.h>
X+#include <machine/tss.h>
X+#include <machine/frame.h>
X+
X+#if __FreeBSD_version >= 500032 && defined(i386)
X+#define _KERNEL
X+#include <sys/pcpu.h>
X+#undef _KERNEL
X+
X+static void kcore_files_info PARAMS ((struct target_ops *));
X+
X+static void kcore_close PARAMS ((int));
X+
X+static void get_kcore_registers PARAMS ((int));
X+
X+static int kcore_xfer_kmem PARAMS ((CORE_ADDR, char *, int, int, struct mem_attrib *attrib, struct target_ops *));
X+
X+static int xfer_umem PARAMS ((CORE_ADDR, char *, int, int));
X+
X+static CORE_ADDR ksym_lookup PARAMS ((const char *));
X+
X+static int read_pcb PARAMS ((int, CORE_ADDR));
X+
X+static struct proc * curProc PARAMS ((void));
X+
X+static int set_proc_context PARAMS ((CORE_ADDR paddr));
X+
X+static void kcore_open PARAMS ((char *filename, int from_tty));
X+
X+static void kcore_detach PARAMS ((char *args, int from_tty));
X+
X+static void set_proc_cmd PARAMS ((char *arg, int from_tty));
X+
X+static void set_cpu_cmd PARAMS ((char *arg, int from_tty));
X+
X+static CORE_ADDR kvtophys PARAMS ((int, CORE_ADDR));
X+
X+static int physrd PARAMS ((int, u_int, char*, int));
X+
X+static int kvm_open PARAMS ((const char *efile, char *cfile, char *sfile,
X+ int perm, char *errout));
X+
X+static int kvm_close PARAMS ((int fd));
X+
X+static int kvm_write PARAMS ((int core_kd, CORE_ADDR memaddr,
X+ char *myaddr, int len));
X+
X+static int kvm_read PARAMS ((int core_kd, CORE_ADDR memaddr,
X+ char *myaddr, int len));
X+
X+static int kvm_uread PARAMS ((int core_kd, struct proc *p,
X+ CORE_ADDR memaddr, char *myaddr,
X+ int len));
X+
X+static int kernel_core_file_hook PARAMS ((int fd, CORE_ADDR addr,
X+ char *buf, int len));
X+
X+static CORE_ADDR kvm_getpcpu PARAMS ((int cfd, int cpuid));
X+
X+static struct kinfo_proc * kvm_getprocs PARAMS ((int cfd, int op,
X+ CORE_ADDR proc, int *cnt));
X+
X+extern struct target_ops kcore_ops; /* Forward decl */
X+
X+/* Non-zero means we are debugging a kernel core file */
X+int kernel_debugging = 0;
X+int kernel_writablecore = 0;
X+
X+static char *core_file;
X+static int core_kd = -1;
X+static struct proc *cur_proc;
X+static CORE_ADDR kernel_start;
X+
X+static CORE_ADDR pcpu;
X+#define PCPU_OFFSET(name) \
X+ offsetof(struct pcpu, pc_ ## name)
X+
X+/*
X+ * Symbol names of kernel entry points. Use special frames.
X+ */
X+#define KSYM_TRAP "calltrap"
X+#define KSYM_INTR "Xintr"
X+#define KSYM_FASTINTR "Xfastintr"
X+#define KSYM_SYSCALL "Xsyscall"
X+
X+/*
X+ * Read the "thing" at kernel address 'addr' into the space pointed to
X+ * by point. The length of the "thing" is determined by the type of p.
X+ * Result is non-zero if transfer fails.
X+ */
X+#define kvread(addr, p) \
X+ (target_read_memory ((CORE_ADDR)(addr), (char *)(p), sizeof(*(p))))
X+
X+
X+
X+/*
X+ * The following is FreeBSD-specific hackery to decode special frames
X+ * and elide the assembly-language stub. This could be made faster by
X+ * defining a frame_type field in the machine-dependent frame information,
X+ * but we don't think that's too important right now.
X+ */
X+enum frametype { tf_normal, tf_trap, tf_interrupt, tf_syscall };
X+
X+CORE_ADDR
X+fbsd_kern_frame_saved_pc (fr)
X+struct frame_info *fr;
X+{
X+ struct minimal_symbol *sym;
X+ CORE_ADDR this_saved_pc;
X+ enum frametype frametype;
X+
X+ this_saved_pc = read_memory_integer (fr->frame + 4, 4);
X+ sym = lookup_minimal_symbol_by_pc (this_saved_pc);
X+ frametype = tf_normal;
X+ if (sym != NULL) {
X+ if (strcmp (SYMBOL_NAME(sym), KSYM_TRAP) == 0)
X+ frametype = tf_trap;
X+ else if (strncmp (SYMBOL_NAME(sym), KSYM_INTR,
X+ strlen(KSYM_INTR)) == 0 || strncmp (SYMBOL_NAME(sym),
X+ KSYM_FASTINTR, strlen(KSYM_FASTINTR)) == 0)
X+ frametype = tf_interrupt;
X+ else if (strcmp (SYMBOL_NAME(sym), KSYM_SYSCALL) == 0)
X+ frametype = tf_syscall;
X+ }
X+
X+ switch (frametype) {
X+ case tf_normal:
X+ return (this_saved_pc);
X+
X+#define oEIP offsetof(struct trapframe, tf_eip)
X+
X+ case tf_trap:
X+ return (read_memory_integer (fr->frame + 8 + oEIP, 4));
X+
X+ case tf_interrupt:
X+ return (read_memory_integer (fr->frame + 12 + oEIP, 4));
X+
X+ case tf_syscall:
X+ return (read_memory_integer (fr->frame + 8 + oEIP, 4));
X+#undef oEIP
X+ }
X+}
X+
X+static CORE_ADDR
X+ksym_lookup (name)
X+const char *name;
X+{
X+ struct minimal_symbol *sym;
X+
X+ sym = lookup_minimal_symbol (name, NULL, NULL);
X+ if (sym == NULL)
X+ error ("kernel symbol `%s' not found.", name);
X+
X+ return SYMBOL_VALUE_ADDRESS (sym);
X+}
X+
X+static struct proc *
X+curProc ()
X+{
X+ struct proc *p;
X+ struct thread *td;
X+ CORE_ADDR addr = pcpu + PCPU_OFFSET (curthread);
X+
X+ if (kvread (addr, &td))
X+ error ("cannot read thread pointer at %x\n", addr);
X+ addr = (CORE_ADDR)td + offsetof(struct thread, td_proc);
X+ if (kvread (addr, &p))
X+ error ("cannot read proc pointer at %x\n", addr);
X+ return p;
X+}
X+
X+/*
X+ * Set the process context to that of the proc structure at
X+ * system address paddr.
X+ */
X+static int
X+set_proc_context (paddr)
X+ CORE_ADDR paddr;
X+{
X+ struct proc p;
X+
X+ if (paddr < kernel_start)
X+ return (1);
X+
X+ cur_proc = (struct proc *)paddr;
X+#ifdef notyet
X+ set_kernel_boundaries (cur_proc);
X+#endif
X+
X+ /* Fetch all registers from core file */
X+ target_fetch_registers (-1);
X+
X+ /* Now, set up the frame cache, and print the top of stack */
X+ flush_cached_frames ();
X+ set_current_frame (create_new_frame (read_fp (), read_pc ()));
X+ select_frame (get_current_frame (), 0);
X+ return (0);
X+}
X+
X+/* Discard all vestiges of any previous core file
X+ and mark data and stack spaces as empty. */
X+
X+/* ARGSUSED */
X+static void
X+kcore_close (quitting)
X+ int quitting;
X+{
X+ inferior_ptid = null_ptid; /* Avoid confusion from thread stuff */
X+
X+ if (core_kd)
X+ {
X+ kvm_close (core_kd);
X+ free (core_file);
X+ core_file = NULL;
X+ core_kd = -1;
X+ }
X+}
X+
X+/* This routine opens and sets up the core file bfd */
X+
X+static void
X+kcore_open (filename, from_tty)
X+ char *filename;
X+ int from_tty;
X+{
X+ const char *p;
X+ struct cleanup *old_chain;
X+ char buf[256], *cp;
X+ int ontop;
X+ CORE_ADDR addr;
X+ struct pcb pcb;
X+
X+ target_preopen (from_tty);
X+
X+ unpush_target (&kcore_ops);
X+
X+ if (!filename)
X+ {
X+ /*error (core_kd?*/
X+ error ( (core_kd >= 0)?
X+ "No core file specified. (Use `detach' to stop debugging a core file.)"
X+ : "No core file specified.");
X+ }
X+
X+ filename = tilde_expand (filename);
X+ if (filename[0] != '/')
X+ {
X+ cp = concat (current_directory, "/", filename, NULL);
X+ free (filename);
X+ filename = cp;
X+ }
X+
X+ old_chain = make_cleanup (free, filename);
X+
X+ /*
X+ * gdb doesn't really do anything if the exec-file couldn't
X+ * be opened (in that case exec_bfd is NULL). Usually that's
X+ * no big deal, but kvm_open needs the exec-file's name,
X+ * which results in dereferencing a NULL pointer, a real NO-NO !
X+ * So, check here if the open of the exec-file succeeded.
X+ */
X+ if (exec_bfd == NULL) /* the open failed */
X+ error ("kgdb could not open the exec-file, please check the name you used !");
X+
X+ core_kd = kvm_open (exec_bfd->filename, filename, NULL,
X+ kernel_writablecore? O_RDWR : O_RDONLY, "kgdb: ");
X+ if (core_kd < 0)
X+ perror_with_name (filename);
X+
X+ /* Looks semi-reasonable. Toss the old core file and work on the new. */
X+
X+ discard_cleanups (old_chain); /* Don't free filename any more */
X+ core_file = filename;
X+ ontop = !push_target (&kcore_ops);
X+
X+ kernel_start = bfd_get_start_address (exec_bfd); /* XXX */
X+
X+ /* print out the panic string if there is one */
X+ if (kvread (ksym_lookup ("panicstr"), &addr) == 0
X+ && addr != 0
X+ && target_read_memory (addr, buf, sizeof (buf)) == 0)
X+ {
X+ for (cp = buf; cp < &buf[sizeof (buf)] && *cp; cp++)
X+ if (!isascii (*cp) || (!isprint (*cp) && !isspace (*cp)))
X+ *cp = '?';
X+ *cp = '\0';
X+ if (buf[0] != '\0')
X+ printf ("panicstr: %s\n", buf);
X+ }
X+
X+ /* Print all the panic messages if possible. */
X+ if (symfile_objfile != NULL)
X+ {
X+ printf ("panic messages:\n---\n");
X+ snprintf (buf, sizeof buf,
X+ "/sbin/dmesg -N %s -M %s | \
X+ /usr/bin/awk '/^(panic:|Fatal trap) / { printing = 1 } \
X+ { if (printing) print $0 }'",
X+ symfile_objfile->name, filename);
X+ fflush(stdout);
X+ system (buf);
X+ printf ("---\n");
X+ }
X+
X+ if (!ontop)
X+ {
X+ warning ("you won't be able to access this core file until you terminate\n\
X+your %s; do ``info files''", target_longname);
X+ return;
X+ }
X+
X+ /* we may need this later */
X+ cur_proc = (struct proc *)curProc ();
X+ /* Now, set up the frame cache, and print the top of stack */
X+ flush_cached_frames ();
X+ set_current_frame (create_new_frame (read_fp (), read_pc ()));
X+ select_frame (get_current_frame (), 0);
X+ print_stack_frame (selected_frame, selected_frame_level, 1);
X+}
X+
X+static void
X+kcore_detach (args, from_tty)
X+ char *args;
X+ int from_tty;
X+{
X+ if (args)
X+ error ("Too many arguments");
X+ unpush_target (&kcore_ops);
X+ reinit_frame_cache ();
X+ if (from_tty)
X+ printf_filtered ("No kernel core file now.\n");
X+}
X+
X+/* Get the registers out of a core file. This is the machine-
X+ independent part. Fetch_core_registers is the machine-dependent
X+ part, typically implemented in the xm-file for each architecture. */
X+
X+/* We just get all the registers, so we don't use regno. */
X+/* ARGSUSED */
X+static void
X+get_kcore_registers (regno)
X+ int regno;
X+{
X+ struct pcb *pcbaddr;
X+ struct thread *mainthread;
X+
X+ /* find the pcb for the current process */
X+ if (cur_proc == NULL)
X+ error ("get_kcore_registers no proc");
X+ if (kvread (&TAILQ_FIRST(&cur_proc->p_threads), &mainthread)) /* XXXKSE */
X+ error ("cannot read main thread for proc at %#x", cur_proc);
X+ if (kvread (&mainthread->td_pcb, &pcbaddr)) /* XXXKSE */
X+ error ("cannot read pcb pointer for proc at %#x", cur_proc);
X+ if (read_pcb (core_kd, (CORE_ADDR)pcbaddr) < 0)
X+ error ("cannot read pcb at %#x", pcbaddr);
X+}
X+
X+static void
X+kcore_files_info (t)
X+ struct target_ops *t;
X+{
X+ printf ("\t`%s'\n", core_file);
X+}
X+
X+static CORE_ADDR
X+ksym_maxuseraddr()
X+{
X+ static CORE_ADDR maxuseraddr;
X+ struct minimal_symbol *sym;
X+
X+ if (maxuseraddr == 0)
X+ {
X+ sym = lookup_minimal_symbol ("PTmap", NULL, NULL);
X+ if (sym == NULL) {
X+ maxuseraddr = VM_MAXUSER_ADDRESS;
X+ } else {
X+ maxuseraddr = SYMBOL_VALUE_ADDRESS (sym);
X+ }
X+ }
X+ return maxuseraddr;
X+}
X+
X+static int
X+kcore_xfer_kmem (memaddr, myaddr, len, write, attrib, target)
X+ CORE_ADDR memaddr;
X+ char *myaddr;
X+ int len;
X+ int write;
X+ struct mem_attrib *attrib;
X+ struct target_ops *target;
X+{
X+ int ns;
X+ int nu;
X+
X+ if (memaddr >= ksym_maxuseraddr())
X+ nu = 0;
X+ else
X+ {
X+ nu = xfer_umem (memaddr, myaddr, len, write);
X+ if (nu <= 0)
X+ return (0);
X+ if (nu == len)
X+ return (nu);
X+ memaddr += nu;
X+ if (memaddr != ksym_maxuseraddr())
X+ return (nu);
X+ myaddr += nu;
X+ len -= nu;
X+ }
X+
X+ ns = (write ? kvm_write : kvm_read) (core_kd, memaddr, myaddr, len);
X+ if (ns < 0)
X+ ns = 0;
X+
X+ return (nu + ns);
X+}
X+
X+static int
X+xfer_umem (memaddr, myaddr, len, write)
X+ CORE_ADDR memaddr;
X+ char *myaddr;
X+ int len;
X+ int write; /* ignored */
X+{
X+ int n;
X+ struct proc proc;
X+
X+ if (cur_proc == NULL || kvread (cur_proc, &proc))
X+ error ("cannot read proc at %#x", cur_proc);
X+ n = kvm_uread (core_kd, &proc, memaddr, myaddr, len) ;
X+
X+ if (n < 0)
X+ return 0;
X+ return n;
X+}
X+
X+static CORE_ADDR
X+ksym_kernbase()
X+{
X+ static CORE_ADDR kernbase;
X+ struct minimal_symbol *sym;
X+
X+ if (kernbase == 0)
X+ {
X+ sym = lookup_minimal_symbol ("kernbase", NULL, NULL);
X+ if (sym == NULL) {
X+ kernbase = KERNBASE;
X+ } else {
X+ kernbase = SYMBOL_VALUE_ADDRESS (sym);
X+ }
X+ }
X+ return kernbase;
X+}
X+
X+#define KERNOFF (ksym_kernbase())
X+#define INKERNEL(x) ((x) >= KERNOFF)
X+
X+static CORE_ADDR sbr;
X+static CORE_ADDR curpcb;
X+static int found_pcb;
X+static int devmem;
X+static int kfd;
X+static struct pcb pcb;
X+
X+static void
X+set_proc_cmd (arg, from_tty)
X+ char *arg;
X+ int from_tty;
X+{
X+ CORE_ADDR paddr;
X+ struct kinfo_proc *kp;
X+ int cnt = 0;
X+
X+ if (!arg)
X+ error_no_arg ("proc address for new current process");
X+ if (!kernel_debugging)
X+ error ("not debugging kernel");
X+
X+ paddr = (CORE_ADDR)parse_and_eval_address (arg);
X+ /* assume it's a proc pointer if it's in the kernel */
X+ if (paddr >= kernel_start) {
X+ if (set_proc_context(paddr))
X+ error("invalid proc address");
X+ } else {
X+ kp = kvm_getprocs(core_kd, KERN_PROC_PID, paddr, &cnt);
X+ if (!cnt)
X+ error("invalid pid");
X+ if (set_proc_context((CORE_ADDR)kp->ki_paddr))
X+ error("invalid proc address");
X+ }
X+}
X+
X+static void
X+set_cpu_cmd (arg, from_tty)
X+ char *arg;
X+ int from_tty;
X+{
X+ CORE_ADDR paddr;
X+ CORE_ADDR pcaddr;
X+ struct kinfo_proc *kp;
X+ int cpu, cfd;
X+
X+ if (!arg)
X+ error_no_arg ("cpu number");
X+ if (!kernel_debugging)
X+ error ("not debugging kernel");
X+
X+ cfd = core_kd;
X+ cpu = (int)parse_and_eval_address (arg);
X+ if ((pcaddr = kvm_getpcpu (cfd, cpu)) == NULL)
X+ error ("cpu number out of range");
X+
X+ pcpu = pcaddr;
X+ curpcb = kvtophys(cfd, pcpu + PCPU_OFFSET (curpcb));
X+ physrd (cfd, curpcb, (char*)&curpcb, sizeof curpcb);
X+
X+ if (!devmem)
X+ paddr = ksym_lookup ("dumppcb") - KERNOFF;
X+ else
X+ paddr = kvtophys (cfd, curpcb);
X+ read_pcb (cfd, paddr);
X+ printf ("initial pcb at %lx\n", (unsigned long)paddr);
X+
X+ if ((cur_proc = curProc()))
X+ target_fetch_registers (-1);
X+
X+ /* Now, set up the frame cache, and print the top of stack */
X+ flush_cached_frames ();
X+ set_current_frame (create_new_frame (read_fp (), read_pc ()));
X+ select_frame (get_current_frame (), 0);
X+ print_stack_frame (selected_frame, selected_frame_level, 1);
X+}
X+
X+/* substitutes for the stuff in libkvm which doesn't work */
X+/* most of this was taken from the old kgdb */
X+
X+/* we don't need all this stuff, but the call should look the same */
X+
X+static int
X+kvm_open (efile, cfile, sfile, perm, errout)
X+ const char *efile;
X+ char *cfile;
X+ char *sfile; /* makes this kvm_open more compatible to the one in libkvm */
X+ int perm;
X+ char *errout; /* makes this kvm_open more compatible to the one in libkvm */
X+{
X+ struct stat stb;
X+ int cfd;
X+ CORE_ADDR paddr;
X+
X+ if ((cfd = open (cfile, perm, 0)) < 0)
X+ return (cfd);
X+
X+ if ((pcpu = kvm_getpcpu (cfd, 0)) == NULL)
X+ return (-1);
X+
X+ fstat (cfd, &stb);
X+ if ((stb.st_mode & S_IFMT) == S_IFCHR
X+ && stb.st_rdev == makedev (2, 0))
X+ {
X+ devmem = 1;
X+ kfd = open (_PATH_KMEM, perm, 0);
X+ }
X+
X+ physrd (cfd, ksym_lookup ("IdlePTD") - KERNOFF, (char*)&sbr, sizeof sbr);
X+ printf ("IdlePTD at phsyical address 0x%08lx\n", (unsigned long)sbr);
X+ curpcb = kvtophys(cfd, pcpu + PCPU_OFFSET (curpcb));
X+ physrd (cfd, curpcb, (char*)&curpcb, sizeof curpcb);
X+
X+ found_pcb = 1; /* for vtophys */
X+ if (!devmem)
X+ paddr = ksym_lookup ("dumppcb") - KERNOFF;
X+ else
X+ paddr = kvtophys (cfd, curpcb);
X+ read_pcb (cfd, paddr);
X+ printf ("initial pcb at physical address 0x%08lx\n", (unsigned long)paddr);
X+
X+ return (cfd);
X+}
X+
X+static int
X+kvm_close (fd)
X+ int fd;
X+{
X+ return (close (fd));
X+}
X+
X+static int
X+kvm_write (core_kd, memaddr, myaddr, len)
X+ int core_kd;
X+ CORE_ADDR memaddr;
X+ char *myaddr;
X+{
X+ int cc;
X+
X+ if (devmem)
X+ {
X+ if (kfd > 0)
X+ {
X+ /*
X+ * Just like kvm_read, only we write.
X+ */
X+ errno = 0;
X+ if (lseek (kfd, (off_t)memaddr, 0) < 0
X+ && errno != 0)
X+ {
X+ error ("kvm_write:invalid address (%x)", memaddr);
X+ return (0);
X+ }
X+ cc = write (kfd, myaddr, len);
X+ if (cc < 0)
X+ {
X+ error ("kvm_write:write failed");
X+ return (0);
X+ }
X+ else if (cc < len)
X+ error ("kvm_write:short write");
X+ return (cc);
X+ }
X+ else
X+ return (0);
X+ }
X+ else
X+ {
X+ printf ("kvm_write not implemented for dead kernels\n");
X+ return (0);
X+ }
X+ /* NOTREACHED */
X+}
X+
X+static int
X+kvm_read (core_kd, memaddr, myaddr, len)
X+ int core_kd;
X+ CORE_ADDR memaddr;
X+ char *myaddr;
X+{
X+ return (kernel_core_file_hook (core_kd, memaddr, myaddr, len));
X+}
X+
X+static int
X+kvm_uread (core_kd, p, memaddr, myaddr, len)
X+ int core_kd;
X+ register struct proc *p;
X+ CORE_ADDR memaddr;
X+ char *myaddr;
X+ int len;
X+{
X+ register char *cp;
X+ char procfile[MAXPATHLEN];
X+ ssize_t amount;
X+ int fd;
X+
X+ if (devmem)
X+ {
X+ sprintf (procfile, "/proc/%d/mem", p->p_pid);
X+ fd = open (procfile, O_RDONLY, 0);
X+ if (fd < 0)
X+ {
X+ error ("cannot open %s", procfile);
X+ close (fd);
X+ return (0);
X+ }
X+
X+ cp = myaddr;
X+ while (len > 0)
X+ {
X+ errno = 0;
X+ if (lseek (fd, (off_t)memaddr, 0) == -1 && errno != 0)
X+ {
X+ error ("invalid address (%x) in %s", memaddr, procfile);
X+ break;
X+ }
X+ amount = read (fd, cp, len);
X+ if (amount < 0)
X+ {
X+ error ("error reading %s", procfile);
X+ break;
X+ }
X+ if (amount == 0)
X+ {
X+ error ("EOF reading %s", procfile);
X+ break;
X+ }
X+ cp += amount;
X+ memaddr += amount;
X+ len -= amount;
X+ }
X+
X+ close (fd);
X+ return ((ssize_t) (cp - myaddr));
X+ }
X+ else
X+ return (kernel_core_file_hook (core_kd, memaddr, myaddr, len));
X+}
X+
X+static struct kinfo_proc kp;
X+
X+/*
X+ * try to do what kvm_proclist in libkvm would do
X+ */
X+static int
X+kvm_proclist (cfd, pid, p, cnt)
X+int cfd, pid, *cnt;
X+struct proc *p;
X+{
X+ struct proc lp;
X+
X+ for (; p != NULL; p = LIST_NEXT(&lp, p_list)) {
X+ if (!kvm_read(cfd, (CORE_ADDR)p, (char *)&lp, sizeof (lp)))
X+ return (0);
X+ if (lp.p_pid != pid)
X+ continue;
X+ kp.ki_paddr = p;
X+ *cnt = 1;
X+ return (1);
X+ }
X+ *cnt = 0;
X+ return (0);
X+}
X+
X+/*
X+ * try to do what kvm_deadprocs in libkvm would do
X+ */
X+static struct kinfo_proc *
X+kvm_deadprocs (cfd, pid, cnt)
X+int cfd, pid, *cnt;
X+{
X+ CORE_ADDR allproc, zombproc;
X+ struct proc *p;
X+
X+ allproc = ksym_lookup("allproc");
X+ if (kvm_read(cfd, allproc, (char *)&p, sizeof (p)) == 0)
X+ return (NULL);
X+ kvm_proclist (cfd, pid, p, cnt);
X+ if (!*cnt) {
X+ zombproc = ksym_lookup("zombproc");
X+ if (kvm_read(cfd, zombproc, (char *)&p, sizeof (p)) == 0)
X+ return (NULL);
X+ kvm_proclist (cfd, pid, p, cnt);
X+ }
X+ return (&kp);
X+}
X+
X+static CORE_ADDR
X+kvm_getpcpu (cfd, cpuid)
X+int cfd, cpuid;
X+{
X+ SLIST_HEAD(, pcpu) pcpu_head;
X+ struct pcpu lpc;
X+ struct pcpu *pc;
X+
X+ physrd (cfd, ksym_lookup ("cpuhead") - KERNOFF, (char*)&pcpu_head,
X+ sizeof pcpu_head);
X+ pc = SLIST_FIRST (&pcpu_head);
X+ for (; pc != NULL; pc = SLIST_NEXT (&lpc, pc_allcpu))
X+ {
X+ kvm_read (cfd, (CORE_ADDR)pc, (char*)&lpc, sizeof lpc);
X+ if (lpc.pc_cpuid == cpuid)
X+ break;
X+ }
X+
X+ return ((CORE_ADDR)pc);
X+}
X+
X+/*
X+ * try to do what kvm_getprocs in libkvm would do
X+ */
X+static struct kinfo_proc *
X+kvm_getprocs (cfd, op, proc, cnt)
X+int cfd, op, *cnt;
X+CORE_ADDR proc;
X+{
X+ int mib[4], size;
X+
X+ *cnt = 0;
X+ /* assume it's a pid */
X+ if (devmem) { /* "live" kernel, use sysctl */
X+ mib[0] = CTL_KERN;
X+ mib[1] = KERN_PROC;
X+ mib[2] = KERN_PROC_PID;
X+ mib[3] = (int)proc;
X+ size = sizeof (kp);
X+ if (sysctl (mib, 4, &kp, &size, NULL, 0) < 0) {
X+ perror("sysctl");
X+ *cnt = 0;
X+ return (NULL);
X+ }
X+ if (!size)
X+ *cnt = 0;
X+ else
X+ *cnt = 1;
X+ return (&kp);
X+ } else
X+ return (kvm_deadprocs (cfd, (int)proc, cnt));
X+}
X+
X+static int
X+physrd (cfd, addr, dat, len)
X+ int cfd;
X+ u_int addr;
X+ char *dat;
X+ int len;
X+{
X+ if (lseek (cfd, (off_t)addr, L_SET) == -1)
X+ return (-1);
X+ return (read (cfd, dat, len));
X+}
X+
X+static CORE_ADDR
X+kvtophys (fd, addr)
X+ int fd;
X+ CORE_ADDR addr;
X+{
X+ CORE_ADDR v;
X+ unsigned int pte;
X+ static CORE_ADDR PTD = -1;
X+ CORE_ADDR current_ptd;
X+
X+ /*
X+ * We may no longer have a linear system page table...
X+ *
X+ * Here's the scoop. IdlePTD contains the physical address
X+ * of a page table directory that always maps the kernel.
X+ * IdlePTD is in memory that is mapped 1-to-1, so we can
X+ * find it easily given its 'virtual' address from ksym_lookup().
X+ * For hysterical reasons, the value of IdlePTD is stored in sbr.
X+ *
X+ * To look up a kernel address, we first convert it to a 1st-level
X+ * address and look it up in IdlePTD. This gives us the physical
X+ * address of a page table page; we extract the 2nd-level part of
X+ * VA and read the 2nd-level pte. Finally, we add the offset part
X+ * of the VA into the physical address from the pte and return it.
X+ *
X+ * User addresses are a little more complicated. If we don't have
X+ * a current PCB from read_pcb(), we use PTD, which is the (fixed)
X+ * virtual address of the current ptd. Since it's NOT in 1-to-1
X+ * kernel space, we must look it up using IdlePTD. If we do have
X+ * a pcb, we get the ptd from pcb_ptd.
X+ */
X+
X+ if (INKERNEL (addr))
X+ current_ptd = sbr;
X+ else if (found_pcb == 0)
X+ {
X+ if (PTD == -1)
X+ PTD = kvtophys (fd, ksym_lookup ("PTD"));
X+ current_ptd = PTD;
X+ }
X+ else
X+ current_ptd = pcb.pcb_cr3;
X+
X+ /*
X+ * Read the first-level page table (ptd).
X+ */
X+ v = current_ptd + ( (unsigned)addr >> PDRSHIFT) * sizeof pte;
X+ if (physrd (fd, v, (char *)&pte, sizeof pte) < 0 || (pte&PG_V) == 0)
X+ return (~0);
X+
X+ if (pte & PG_PS)
X+ {
X+ /*
X+ * No second-level page table; ptd describes one 4MB page.
X+ * (We assume that the kernel wouldn't set PG_PS without enabling
X+ * it cr0, and that the kernel doesn't support 36-bit physical
X+ * addresses).
X+ */
X+#define PAGE4M_MASK (NBPDR - 1)
X+#define PG_FRAME4M (~PAGE4M_MASK)
X+ addr = (pte & PG_FRAME4M) + (addr & PAGE4M_MASK);
X+ }
X+ else
X+ {
X+ /*
X+ * Read the second-level page table.
X+ */
X+ v = (pte&PG_FRAME) + ((addr >> PAGE_SHIFT)&(NPTEPG-1)) * sizeof pte;
X+ if (physrd (fd, v, (char *) &pte, sizeof (pte)) < 0 || (pte&PG_V) == 0)
X+ return (~0);
X+
X+ addr = (pte & PG_FRAME) + (addr & PAGE_MASK);
X+ }
X+#if 0
X+ printf ("vtophys (%x) -> %x\n", oldaddr, addr);
X+#endif
X+ return (addr);
X+}
X+
X+static int
X+read_pcb (fd, uaddr)
X+ int fd;
X+ CORE_ADDR uaddr;
X+{
X+ int i;
X+ int noreg;
X+ CORE_ADDR nuaddr = uaddr;
X+
X+ /* need this for the `proc' command to work */
X+ if (INKERNEL(uaddr))
X+ nuaddr = kvtophys(fd, uaddr);
X+
X+ if (physrd (fd, nuaddr, (char *)&pcb, sizeof pcb) < 0)
X+ {
X+ error ("cannot read pcb at %x\n", uaddr);
X+ return (-1);
X+ }
X+
X+ /*
X+ * get the register values out of the sys pcb and
X+ * store them where `read_register' will find them.
X+ */
X+ /*
X+ * XXX many registers aren't available.
X+ * XXX for the non-core case, the registers are stale - they are for
X+ * the last context switch to the debugger.
X+ * XXX gcc's register numbers aren't all #defined in tm-i386.h.
X+ */
X+ noreg = 0;
X+ for (i = 0; i < 3; ++i) /* eax,ecx,edx */
X+ supply_register (i, (char *)&noreg);
X+ supply_register (3, (char *)&pcb.pcb_ebx);
X+ supply_register (SP_REGNUM, (char *)&pcb.pcb_esp);
X+ supply_register (FP_REGNUM, (char *)&pcb.pcb_ebp);
X+ supply_register (6, (char *)&pcb.pcb_esi);
X+ supply_register (7, (char *)&pcb.pcb_edi);
X+ supply_register (PC_REGNUM, (char *)&pcb.pcb_eip);
X+ for (i = 9; i < 14; ++i) /* eflags, cs, ss, ds, es, fs */
X+ supply_register (i, (char *)&noreg);
X+ supply_register (15, (char *)&pcb.pcb_gs);
X+
X+ /* XXX 80387 registers? */
X+}
X+
X+/*
X+ * read len bytes from kernel virtual address 'addr' into local
X+ * buffer 'buf'. Return numbert of bytes if read ok, 0 otherwise. On read
X+ * errors, portion of buffer not read is zeroed.
X+ */
X+
X+static int
X+kernel_core_file_hook (fd, addr, buf, len)
X+ int fd;
X+ CORE_ADDR addr;
X+ char *buf;
X+ int len;
X+{
X+ int i;
X+ CORE_ADDR paddr;
X+ register char *cp;
X+ int cc;
X+
X+ cp = buf;
X+
X+ while (len > 0)
X+ {
X+ paddr = kvtophys (fd, addr);
X+ if (paddr == ~0)
X+ {
X+ memset (buf, '\000', len);
X+ break;
X+ }
X+ /* we can't read across a page boundary */
X+ i = min (len, PAGE_SIZE - (addr & PAGE_MASK));
X+ if ( (cc = physrd (fd, paddr, cp, i)) <= 0)
X+ {
X+ memset (cp, '\000', len);
X+ return (cp - buf);
X+ }
X+ cp += cc;
X+ addr += cc;
X+ len -= cc;
X+ }
X+ return (cp - buf);
X+}
X+
X+static struct target_ops kcore_ops;
X+
X+#else
X+int kernel_debugging = 0;
X+#endif
X+
X+void
X+_initialize_kcorelow()
X+{
X+#if __FreeBSD_version >= 500032 && defined(i386)
X+ kcore_ops.to_shortname = "kcore";
X+ kcore_ops.to_longname = "Kernel core dump file";
X+ kcore_ops.to_doc =
X+ "Use a core file as a target. Specify the filename of the core file.";
X+ kcore_ops.to_open = kcore_open;
X+ kcore_ops.to_close = kcore_close;
X+ kcore_ops.to_attach = find_default_attach;
X+ kcore_ops.to_detach = kcore_detach;
X+ kcore_ops.to_fetch_registers = get_kcore_registers;
X+ kcore_ops.to_xfer_memory = kcore_xfer_kmem;
X+ kcore_ops.to_files_info = kcore_files_info;
X+ kcore_ops.to_create_inferior = find_default_create_inferior;
X+ kcore_ops.to_stratum = kcore_stratum;
X+ kcore_ops.to_has_memory = 1;
X+ kcore_ops.to_has_stack = 1;
X+ kcore_ops.to_has_registers = 1;
X+ kcore_ops.to_magic = OPS_MAGIC;
X+
X+ add_target (&kcore_ops);
X+ add_com ("proc", class_obscure, set_proc_cmd, "Set current process context");
X+ add_com ("cpu", class_obscure, set_cpu_cmd, "Set current cpu");
X+#endif
X+}
END-of-fpc-gdb/files/patch-gdb_kvm-fbsd.c
echo x - fpc-gdb/files/patch-gdb_symfile.c
sed 's/^X//' >fpc-gdb/files/patch-gdb_symfile.c << 'END-of-fpc-gdb/files/patch-gdb_symfile.c'
X--- gdb/symfile.c Tue Feb 26 17:40:36 2002
X+++ gdb/symfile.c Wed May 29 11:10:17 2002
X@@ -1546,11 +1546,7 @@
X char *val = sect_opts[i].value;
X char *sec = sect_opts[i].name;
X
X- val = sect_opts[i].value;
X- if (val[0] == '0' && val[1] == 'x')
X- addr = strtoul (val+2, NULL, 16);
X- else
X- addr = strtoul (val, NULL, 10);
X+ addr = parse_and_eval_address(val);
X
X /* Here we store the section offsets in the order they were
X entered on the command line. */
END-of-fpc-gdb/files/patch-gdb_symfile.c
echo x - fpc-gdb/files/patch-gdb_target.c
sed 's/^X//' >fpc-gdb/files/patch-gdb_target.c << 'END-of-fpc-gdb/files/patch-gdb_target.c'
X--- gdb/target.c.orig Thu Jan 31 17:01:21 2002
X+++ gdb/target.c Fri Jun 7 16:36:06 2002
X@@ -1361,7 +1361,11 @@
X for (t = target_structs; t < target_structs + target_struct_size;
X ++t)
X {
X+#if defined(__FreeBSD__) && defined(__i386__)
X+ if ((*t)->to_stratum == (kernel_debugging ? kcore_stratum : core_stratum))
X+#else
X if ((*t)->to_stratum == core_stratum)
X+#endif
X {
X runable = *t;
X ++count;
END-of-fpc-gdb/files/patch-gdb_target.c
echo x - fpc-gdb/files/patch-gdb_target.h
sed 's/^X//' >fpc-gdb/files/patch-gdb_target.h << 'END-of-fpc-gdb/files/patch-gdb_target.h'
X--- gdb/target.h Sat Feb 9 20:08:42 2002
X+++ gdb/target.h Fri May 24 08:38:31 2002
X@@ -52,6 +52,7 @@
X dummy_stratum, /* The lowest of the low */
X file_stratum, /* Executable files, etc */
X core_stratum, /* Core dump files */
X+ kcore_stratum, /* Kernel core files */
X download_stratum, /* Downloading of remote targets */
X process_stratum, /* Executing processes */
X thread_stratum /* Executing threads */
END-of-fpc-gdb/files/patch-gdb_target.h
echo x - fpc-gdb/files/patch-gdb_version.in
sed 's/^X//' >fpc-gdb/files/patch-gdb_version.in << 'END-of-fpc-gdb/files/patch-gdb_version.in'
X--- gdb/version.in Fri Apr 26 18:04:22 2002
X+++ gdb/version.in Mon Jun 3 08:14:54 2002
X@@ -1 +1 @@
X-5.2
X+5.2 (FreeBSD)
END-of-fpc-gdb/files/patch-gdb_version.in
echo x - fpc-gdb/files/patch-gdb_config_alpha_fbsd.mh
sed 's/^X//' >fpc-gdb/files/patch-gdb_config_alpha_fbsd.mh << 'END-of-fpc-gdb/files/patch-gdb_config_alpha_fbsd.mh'
X--- gdb/config/alpha/fbsd.mh Sat Jan 19 17:12:50 2002
X+++ gdb/config/alpha/fbsd.mh Mon Jun 3 08:03:39 2002
X@@ -1,5 +1,5 @@
X # Host: FreeBSD/Alpha
X NATDEPFILES= fork-child.o infptrace.o inftarg.o \
X solib.o solib-svr4.o solib-legacy.o \
X- corelow.o core-regset.o alphabsd-nat.o
X+ corelow.o core-regset.o alphabsd-nat.o freebsd-uthread.o
X NAT_FILE= nm-fbsd.h
END-of-fpc-gdb/files/patch-gdb_config_alpha_fbsd.mh
echo x - fpc-gdb/Makefile
sed 's/^X//' >fpc-gdb/Makefile << 'END-of-fpc-gdb/Makefile'
X# ex:ts=8
X# Ports collection makefile for: FPC-GDB 5.2.1
X# Date created: 8 February 2004
X# Whom: John Merryweather Cooper <coop9211@uidaho.edu>
X#
X# $FreeBSD$
X#
X
XPORTNAME= gdb
XPORTVERSION= 5.2.1
XCATEGORIES= devel lang
XMASTER_SITES= ${MASTER_SITE_SOURCEWARE}
XMASTER_SITE_SUBDIR= gdb/releases
XPKGNAMEPREFIX= fpc-
X
XPATCH_SITES= ftp://ftp.freepascal.org/fpc/contrib/libgdb/v5.2.1 \
X http://planetmirror.com/pub/fpc/contrib/libgdb/v5.2.1/ \
X ftp://ftp.jp.freepascal.org/mirror/fpc/contrib/libgdb/v5.2.1/ \
X ftp://freepascal.stack.nl/pub/fpc/contrib/libgdb/v5.2.1/ \
X ftp://ftp.no.freepascal.org/pub/fpc/contrib/libgdb/v5.2.1/ \
X ftp://ftp.us.freepascal.org/pub/fpc/contrib/libgdb/v5.2.1/ \
X ${MASTER_SITE_LOCAL}
XPATCH_SITE_SUBDIR= obrien
XPATCHFILES= gdb521.dif gdb521_xfree-loadmod.diff
X
XMAINTAINER= coop9211@uidaho.edu
XCOMMENT= GNU GDB 5.2.1 modified for Free Pascal
X
X.include <bsd.port.pre.mk>
X
XNO_LATEST_LINK= yes
XUSE_GMAKE= yes
XGNU_CONFIGURE= yes
XUSE_REINPLACE= yes
XCONFIGURE_ARGS= --program-suffix=fpc
XAR?= /usr/bin/ar
X
Xpre-configure:
X cd ${WRKSRC} ; ${RM} -rf dejagnu expect sim tcl texinfo
X
Xpost-configure:
X# if devel/bison is installed, build will fail --> force yacc
X @${FIND} ${WRKSRC} -name "Makefile*" | ${XARGS} \
X ${REINPLACE_CMD} 's|bison -y|yacc|g'
X
Xdo-install:
X @${INSTALL_PROGRAM} ${WRKSRC}/gdb/gdb \
X ${PREFIX}/bin/gdbfpc
X cd ${WRKSRC}/gdb && ${AR} -rs libgdb.a cli*.o mi*.o
X cd ${WRKSRC}/bfd && ${AR} -rs libbfd.a *.o
X cd ${WRKSRC}/opcodes && ${AR} -rs libopcodes.a *.o
X @${MKDIR} ${PREFIX}/lib/fpc/1.0.10/units/freebsd/gdbint/libgdb
X @${INSTALL_DATA} \
X ${WRKSRC}/gdb/libgdb.a \
X ${WRKSRC}/bfd/libbfd.a \
X ${WRKSRC}/opcodes/libopcodes.a \
X ${WRKSRC}/libiberty/libiberty.a \
X ${WRKSRC}/intl/libintl.a \
X ${PREFIX}/lib/fpc/1.0.10/units/freebsd/gdbint/libgdb
X
Xcklatest:
X ncftpls \
X ftp://mirrors.rcn.net/mirrors/sources.redhat.com/${MASTER_SITE_SUBDIR}/ \
X | ${GREP} gdb+dejagnu-
X
X.include <bsd.port.post.mk>
END-of-fpc-gdb/Makefile
echo x - fpc-gdb/distinfo
sed 's/^X//' >fpc-gdb/distinfo << 'END-of-fpc-gdb/distinfo'
XMD5 (gdb-5.2.1.tar.gz) = e9766842f1bbc6c2353de1410d8c0de0
XSIZE (gdb-5.2.1.tar.gz) = 14715792
XMD5 (gdb521.dif) = a83edfef16ee5b78c97517588459bbe2
XSIZE (gdb521.dif) = 19633
XMD5 (gdb521_xfree-loadmod.diff) = 0cafd6520d86caa207a2f7a54f981d06
XSIZE (gdb521_xfree-loadmod.diff) = 29594
END-of-fpc-gdb/distinfo
echo x - fpc-gdb/pkg-descr
sed 's/^X//' >fpc-gdb/pkg-descr << 'END-of-fpc-gdb/pkg-descr'
XGNU GDB 5.2.1 modified to work with Free Pascal.
X
XWWW: http://www.freepascal.org/
X
X--
XJohn Merryweather Cooper <coop9211@uidaho.edu>
END-of-fpc-gdb/pkg-descr
echo x - fpc-gdb/pkg-plist
sed 's/^X//' >fpc-gdb/pkg-plist << 'END-of-fpc-gdb/pkg-plist'
Xbin/gdbfpc
Xlib/fpc/1.0.10/units/freebsd/gdbint/libgdb/libbfd.a
Xlib/fpc/1.0.10/units/freebsd/gdbint/libgdb/libgdb.a
Xlib/fpc/1.0.10/units/freebsd/gdbint/libgdb/libiberty.a
Xlib/fpc/1.0.10/units/freebsd/gdbint/libgdb/libintl.a
Xlib/fpc/1.0.10/units/freebsd/gdbint/libgdb/libopcodes.a
X@dirrm lib/fpc/1.0.10/units/freebsd/gdbint/libgdb
X@dirrm lib/fpc/1.0.10/units/freebsd/gdbint
X@dirrm lib/fpc/1.0.10/units/freebsd
X@dirrm lib/fpc/1.0.10/units
X@dirrm lib/fpc/1.0.10
X@dirrm lib/fpc
END-of-fpc-gdb/pkg-plist
exit
--- new-port-fpc-gdb ends here ---
>Release-Note:
>Audit-Trail:
>Unformatted:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040209080508.ECE4ABAA>