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Diffstat (limited to 'devel/gdb66/files/freebsd-uthread.c')
-rw-r--r--devel/gdb66/files/freebsd-uthread.c994
1 files changed, 0 insertions, 994 deletions
diff --git a/devel/gdb66/files/freebsd-uthread.c b/devel/gdb66/files/freebsd-uthread.c
deleted file mode 100644
index e6f4a7f3be0a..000000000000
--- a/devel/gdb66/files/freebsd-uthread.c
+++ /dev/null
@@ -1,994 +0,0 @@
-/* Low level interface for debugging FreeBSD user threads for GDB, the GNU debugger.
- Copyright 1996, 1999 Free Software Foundation, Inc.
-
-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. */
-
-/* $FreeBSD$ */
-
-/* This module implements a sort of half target that sits between the
- machine-independent parts of GDB and the ptrace interface (infptrace.c) to
- provide access to the FreeBSD user-mode thread implementation.
-
- FreeBSD threads are true user-mode threads, which are invoked via
- the pthread_* interfaces. These are mostly implemented in
- user-space, with all thread context kept in various structures that
- live in the user's heap. For the most part, the kernel has no
- knowlege of these threads.
-
- Based largely on hpux-thread.c
-
- */
-
-
-#include "defs.h"
-#include <sys/queue.h>
-#include <signal.h>
-#include <setjmp.h>
-#include <string.h>
-#include "gdbthread.h"
-#include "target.h"
-#include "inferior.h"
-#include <fcntl.h>
-#include <ucontext.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include "gdbcore.h"
-#include "regcache.h"
-
-extern int child_suppress_run;
-extern struct target_ops child_ops; /* target vector for inftarg.c */
-
-extern void _initialize_freebsd_uthread PARAMS ((void));
-
-/* Set to true while we are part-way through attaching */
-static int freebsd_uthread_attaching;
-
-static int freebsd_uthread_active = 0;
-static CORE_ADDR P_thread_list;
-static CORE_ADDR P_thread_run;
-
-/* Pointer to the next function on the objfile event chain. */
-static void (*target_new_objfile_chain) (struct objfile *objfile);
-
-static void freebsd_uthread_resume PARAMS ((ptid_t pid, int step,
- enum target_signal signo));
-
-static void init_freebsd_uthread_ops PARAMS ((void));
-
-static struct target_ops freebsd_uthread_ops;
-
-static ptid_t find_active_ptid PARAMS ((void));
-
-struct cached_pthread {
- u_int64_t uniqueid;
- int state;
- CORE_ADDR name;
- union {
- ucontext_t uc;
- jmp_buf jb;
- } ctx;
-};
-
-static ptid_t cached_ptid;
-static struct cached_pthread cached_pthread;
-static CORE_ADDR cached_pthread_addr;
-
-LIST_HEAD(idmaplist, idmap);
-
-struct idmap {
- LIST_ENTRY(idmap) link;
- u_int64_t uniqueid;
- int tid;
-};
-
-#define MAPHASH_SIZE 257
-#define TID_MIN 1
-#define TID_MAX 16383
-
-static int tid_to_hash[TID_MAX + 1]; /* set to map_hash index */
-static struct idmaplist map_hash[MAPHASH_SIZE];
-static int next_free_tid = TID_MIN; /* first available tid */
-static int last_free_tid = TID_MIN; /* first unavailable */
-
-static CORE_ADDR P_thread_next_offset;
-static CORE_ADDR P_thread_uniqueid_offset;
-static CORE_ADDR P_thread_state_offset;
-static CORE_ADDR P_thread_name_offset;
-static CORE_ADDR P_thread_ctx_offset;
-static CORE_ADDR P_thread_PS_RUNNING_value;
-static CORE_ADDR P_thread_PS_DEAD_value;
-
-static int next_offset;
-static int uniqueid_offset;
-static int state_offset;
-static int name_offset;
-static int ctx_offset;
-static int PS_RUNNING_value;
-static int PS_DEAD_value;
-
-#define UNIQUEID_HASH(id) (id % MAPHASH_SIZE)
-#define TID_ADD1(tid) (((tid) + 1) == TID_MAX + 1 \
- ? TID_MIN : (tid) + 1)
-#define IS_TID_FREE(tid) (tid_to_hash[tid] == -1)
-
-static int
-get_new_tid(int h)
-{
- int tid = next_free_tid;
-
- tid_to_hash[tid] = h;
- next_free_tid = TID_ADD1(next_free_tid);
- if (next_free_tid == last_free_tid)
- {
- int i;
-
- for (i = last_free_tid; TID_ADD1(i) != last_free_tid; i = TID_ADD1(i))
- if (IS_TID_FREE(i))
- break;
- if (TID_ADD1(i) == last_free_tid)
- {
- error("too many threads");
- return 0;
- }
- next_free_tid = i;
- for (i = TID_ADD1(i); IS_TID_FREE(i); i = TID_ADD1(i))
- ;
- last_free_tid = i;
- }
-
- return tid;
-}
-
-static ptid_t
-find_ptid(u_int64_t uniqueid)
-{
- int h = UNIQUEID_HASH(uniqueid);
- struct idmap *im;
-
- LIST_FOREACH(im, &map_hash[h], link)
- if (im->uniqueid == uniqueid)
- return MERGEPID(PIDGET(inferior_ptid), im->tid);
-
- im = xmalloc(sizeof(struct idmap));
- im->uniqueid = uniqueid;
- im->tid = get_new_tid(h);
- LIST_INSERT_HEAD(&map_hash[h], im, link);
-
- return MERGEPID(PIDGET(inferior_ptid), im->tid);
-}
-
-static void
-free_ptid(ptid_t ptid)
-{
- int tid = TIDGET(ptid);
- int h = tid_to_hash[tid];
- struct idmap *im;
-
- if (!tid) return;
-
- LIST_FOREACH(im, &map_hash[h], link)
- if (im->tid == tid)
- break;
-
- if (!im) return;
-
- LIST_REMOVE(im, link);
- tid_to_hash[tid] = -1;
- free(im);
-}
-
-#define READ_OFFSET(field) read_memory(P_thread_##field##_offset, \
- (char *) &field##_offset, \
- sizeof(field##_offset))
-
-#define READ_VALUE(name) read_memory(P_thread_##name##_value, \
- (char *) &name##_value, \
- sizeof(name##_value))
-
-static void
-read_thread_offsets (void)
-{
- READ_OFFSET(next);
- READ_OFFSET(uniqueid);
- READ_OFFSET(state);
- READ_OFFSET(name);
- READ_OFFSET(ctx);
-
- READ_VALUE(PS_RUNNING);
- READ_VALUE(PS_DEAD);
-}
-
-#define READ_FIELD(ptr, T, field, result) \
- read_memory ((ptr) + field##_offset, (char *) &(result), sizeof result)
-
-static u_int64_t
-read_pthread_uniqueid (CORE_ADDR ptr)
-{
- u_int64_t uniqueid;
- READ_FIELD(ptr, u_int64_t, uniqueid, uniqueid);
- return uniqueid;
-}
-
-static CORE_ADDR
-read_pthread_next (CORE_ADDR ptr)
-{
- CORE_ADDR next;
- READ_FIELD(ptr, CORE_ADDR, next, next);
- return next;
-}
-
-static void
-read_cached_pthread (CORE_ADDR ptr, struct cached_pthread *cache)
-{
- READ_FIELD(ptr, u_int64_t, uniqueid, cache->uniqueid);
- READ_FIELD(ptr, int, state, cache->state);
- READ_FIELD(ptr, CORE_ADDR, name, cache->name);
- READ_FIELD(ptr, ucontext_t, ctx, cache->ctx);
-}
-
-static ptid_t
-find_active_ptid (void)
-{
- CORE_ADDR ptr;
-
- read_memory ((CORE_ADDR)P_thread_run,
- (char *)&ptr,
- sizeof ptr);
-
- return find_ptid(read_pthread_uniqueid(ptr));
-}
-
-static CORE_ADDR find_pthread_addr PARAMS ((ptid_t ptid));
-static struct cached_pthread * find_pthread PARAMS ((ptid_t ptid));
-
-static CORE_ADDR
-find_pthread_addr (ptid_t ptid)
-{
- CORE_ADDR ptr;
-
- if (ptid_equal(ptid, cached_ptid))
- return cached_pthread_addr;
-
- read_memory ((CORE_ADDR)P_thread_list,
- (char *)&ptr,
- sizeof ptr);
-
- while (ptr != 0)
- {
- if (ptid_equal(find_ptid(read_pthread_uniqueid(ptr)), ptid))
- {
- cached_ptid = ptid;
- cached_pthread_addr = ptr;
- read_cached_pthread(ptr, &cached_pthread);
- return ptr;
- }
- ptr = read_pthread_next(ptr);
- }
-
- return NULL;
-}
-
-static struct cached_pthread *
-find_pthread (ptid_t ptid)
-{
- CORE_ADDR ptr;
-
- if (ptid_equal(ptid, cached_ptid))
- return &cached_pthread;
-
- read_memory ((CORE_ADDR)P_thread_list,
- (char *)&ptr,
- sizeof ptr);
-
- while (ptr != 0)
- {
- if (ptid_equal(find_ptid(read_pthread_uniqueid(ptr)), ptid))
- {
- cached_ptid = ptid;
- cached_pthread_addr = ptr;
- read_cached_pthread(ptr, &cached_pthread);
- return &cached_pthread;
- }
- ptr = read_pthread_next(ptr);
- }
-
-#if 0
- error ("Can't find pthread %d,%d", PIDGET(ptid), TIDGET(ptid));
-#endif
- return NULL;
-}
-
-
-/* Most target vector functions from here on actually just pass through to
- inftarg.c, as they don't need to do anything specific for threads. */
-
-/* ARGSUSED */
-static void
-freebsd_uthread_open (char *arg, int from_tty)
-{
- child_ops.to_open (arg, from_tty);
-}
-
-/* Attach to process PID, then initialize for debugging it
- and wait for the trace-trap that results from attaching. */
-
-static void
-freebsd_uthread_attach (char *args, int from_tty)
-{
- child_ops.to_attach (args, from_tty);
- push_target (&freebsd_uthread_ops);
- freebsd_uthread_attaching = 1;
-}
-
-/* After an attach, see if the target is threaded */
-
-static void
-freebsd_uthread_post_attach (int pid)
-{
- if (freebsd_uthread_active)
- {
- read_thread_offsets ();
- inferior_ptid = find_active_ptid ();
- add_thread (inferior_ptid);
- }
- else
- {
- unpush_target (&freebsd_uthread_ops);
- push_target (&child_ops);
- }
-
- freebsd_uthread_attaching = 0;
-}
-
-/* Take a program previously attached to and detaches it.
- The program resumes execution and will no longer stop
- on signals, etc. We'd better not have left any breakpoints
- in the program or it'll die when it hits one. For this
- to work, it may be necessary for the process to have been
- previously attached. It *might* work if the program was
- started via the normal ptrace (PTRACE_TRACEME). */
-
-static void
-freebsd_uthread_detach (char *args, int from_tty)
-{
- child_ops.to_detach (args, from_tty);
-}
-
-/* Resume execution of process PID. If STEP is nozero, then
- just single step it. If SIGNAL is nonzero, restart it with that
- signal activated. We may have to convert pid from a thread-id to an LWP id
- for procfs. */
-
-static void
-freebsd_uthread_resume (ptid_t ptid, int step, enum target_signal signo)
-{
- if (freebsd_uthread_attaching)
- {
- child_ops.to_resume (ptid, step, signo);
- return;
- }
-
- child_ops.to_resume (ptid, step, signo);
- cached_ptid = MERGEPID(0, 0);
-}
-
-/* Wait for any threads to stop. We may have to convert PID from a thread id
- to a LWP id, and vice versa on the way out. */
-
-static ptid_t
-freebsd_uthread_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
-{
- ptid_t rtnval;
-
- if (freebsd_uthread_attaching)
- {
- return child_ops.to_wait (ptid, ourstatus);
- }
-
- rtnval = child_ops.to_wait (ptid, ourstatus);
-
- if (PIDGET(rtnval) >= 0)
- {
- rtnval = find_active_ptid ();
- if (!in_thread_list (rtnval))
- add_thread (rtnval);
- }
-
- return rtnval;
-}
-
-/* XXX: this needs to be selected by target, not [build] host */
-#ifdef __i386__
-
-#include "i386-tdep.h"
-
-static char sigmap[I386_SSE_NUM_REGS] = /* map reg to sigcontext */
-{
- 12, /* eax */
- 11, /* ecx */
- 10, /* edx */
- 9, /* ebx */
- 8, /* esp */
- 7, /* ebp */
- 6, /* esi */
- 5, /* edi */
- 15, /* eip */
- 17, /* eflags */
- 16, /* cs */
- 19, /* ss */
- 4, /* ds */
- 3, /* es */
- 2, /* fs */
- 1, /* gs */
- -1, -1, -1, -1, -1, -1, -1, /* st0-st7 */
- -1, -1, -1, -1, -1, -1, -1, /* fctrl-fop */
- -1, -1, -1, -1, -1, -1, -1, /* xmm0-xmm7 */
- -1, /* mxcsr */
-};
-
-static char jmpmap[I386_SSE_NUM_REGS] = /* map reg to jmp_buf */
-{
- 6, /* eax */
- -1, /* ecx */
- -1, /* edx */
- 1, /* ebx */
- 2, /* esp */
- 3, /* ebp */
- 4, /* esi */
- 5, /* edi */
- 0, /* eip */
- -1, /* eflags */
- -1, /* cs */
- -1, /* ss */
- -1, /* ds */
- -1, /* es */
- -1, /* fs */
- -1, /* gs */
- -1, -1, -1, -1, -1, -1, -1, /* st0-st7 */
- -1, -1, -1, -1, -1, -1, -1, /* fctrl-fop */
- -1, -1, -1, -1, -1, -1, -1, /* xmm0-xmm7 */
- -1, /* mxcsr */
-};
-
-#endif
-
-#ifdef __amd64__
-
-#include "amd64-tdep.h"
-
-// XXX:DEO not fully ported from i386 yet!!
-
-static char sigmap[AMD64_NUM_REGS_TOTAL] = /* map reg to sigcontext */
-{
- 12, /* rax */
- 11, /* rcx */
- 10, /* rdx */
- 9, /* rbx */
- 8, /* rsp */
- 7, /* rbp */
- 6, /* rsi */
- 5, /* rdi */
- 15, /* rip */
- 17, /* rflags */
- 16, /* cs */
- 19, /* ss */
- 4, /* ds */
- 3, /* es */
- 2, /* fs */
- 1, /* gs */
- -1, -1, -1, -1, -1, -1, -1, /* st0-st7 */
- -1, -1, -1, -1, -1, -1, -1, /* fctrl-fop */
- -1, -1, -1, -1, -1, -1, -1, /* xmm0-xmm7 */
- -1, /* mxcsr */
-};
-
-static char jmpmap[AMD64_NUM_REGS_TOTAL] = /* map reg to jmp_buf */
-{
- 6, /* rax */
- -1, /* rcx */
- -1, /* rdx */
- 1, /* rbx */
- 2, /* rsp */
- 3, /* rbp */
- 4, /* rsi */
- 5, /* rdi */
- 0, /* rip */
- -1, /* rflags */
- -1, /* cs */
- -1, /* ss */
- -1, /* ds */
- -1, /* es */
- -1, /* fs */
- -1, /* gs */
- -1, -1, -1, -1, -1, -1, -1, /* st0-st7 */
- -1, -1, -1, -1, -1, -1, -1, /* fctrl-fop */
- -1, -1, -1, -1, -1, -1, -1, /* xmm0-xmm7 */
- -1, /* mxcsr */
-};
-
-#endif
-
-#ifdef __alpha__
-
-#include "alpha-tdep.h"
-
-static char sigmap[ALPHA_NUM_REGS] = /* map reg to sigcontext */
-{
- 1, 2, 3, 4, 5, 6, 7, 8, /* v0 - t6 */
- 9, 10, 11, 12, 13, 14, 15, 16, /* t7 - fp */
- 17, 18, 19, 20, 21, 22, 23, 24, /* a0 - t9 */
- 25, 26, 27, 28, 29, 30, 31, 32, /* t10 - zero */
- 38, 39, 40, 41, 42, 43, 44, 45, /* f0 - f7 */
- 46, 47, 48, 49, 50, 51, 52, 53, /* f8 - f15 */
- 54, 55, 56, 57, 58, 59, 60, 61, /* f16 - f23 */
- 62, 63, 64, 65, 66, 67, 68, 69, /* f24 - f31 */
- 33, -1 /* pc, vfp */
-};
-static char jmpmap[ALPHA_NUM_REGS] = {
- 4, 5, 6, 7, 8, 9, 10, 11, /* v0 - t6 */
- 12, 13, 14, 15, 16, 17, 18, 19, /* t7 - fp */
- 20, 21, 22, 23, 24, 25, 26, 27, /* a0 - t9 */
- 28, 29, 30, 31, 32, 33, 34, 35, /* t10 - zero */
- 37, 38, 39, 40, 41, 42, 43, 44, /* f0 - f7 */
- 45, 46, 47, 48, 49, 50, 51, 52, /* f8 - f15 */
- 53, 54, 55, 56, 57, 58, 59, 60, /* f16 - f23 */
- 61, 62, 63, 64, 65, 66, 67, 68, /* f24 - f31 */
- 2, -1, /* pc, vfp */
-};
-
-#endif
-
-#ifdef __sparc64__
-
-static char sigmap[125] = /* map reg to sigcontext */
-{
- -1
-};
-static char jmpmap[125] = {
- -1
-};
-
-#endif
-
-static void
-freebsd_uthread_fetch_registers (int regno)
-{
- struct cached_pthread *thread;
- int active;
- int first_regno, last_regno;
- register_t *regbase;
- char *regmap;
-
- if (freebsd_uthread_attaching || TIDGET(inferior_ptid) == 0)
- {
- child_ops.to_fetch_registers (regno);
- return;
- }
-
- thread = find_pthread (inferior_ptid);
- active = (ptid_equal(inferior_ptid, find_active_ptid()));
-
- if (active)
- {
- child_ops.to_fetch_registers (regno);
- return;
- }
-
- if (regno == -1)
- {
- first_regno = 0;
- last_regno = NUM_REGS - 1;
- }
- else
- {
- first_regno = regno;
- last_regno = regno;
- }
-
- regbase = (register_t*) &thread->ctx.jb[0];
- regmap = jmpmap;
-
- for (regno = first_regno; regno <= last_regno; regno++)
- {
- if (regmap[regno] == -1)
- child_ops.to_fetch_registers (regno);
- else
- if (thread)
- regcache_raw_supply (current_regcache, regno, (char*) &regbase[regmap[regno]]);
- else
- regcache_raw_supply (current_regcache, regno, NULL);
- }
-}
-
-static void
-freebsd_uthread_store_registers (int regno)
-{
- struct cached_pthread *thread;
- CORE_ADDR ptr;
- int first_regno, last_regno;
- u_int32_t *regbase;
- char *regmap;
-
- if (freebsd_uthread_attaching)
- {
- child_ops.to_store_registers (regno);
- return;
- }
-
- thread = find_pthread (inferior_ptid);
-
- if (thread->state == PS_RUNNING_value)
- {
- child_ops.to_store_registers (regno);
- return;
- }
-
- if (regno == -1)
- {
- first_regno = 0;
- last_regno = NUM_REGS - 1;
- }
- else
- {
- first_regno = regno;
- last_regno = regno;
- }
-
- regbase = (u_int32_t*) &thread->ctx.jb[0];
- regmap = jmpmap;
-
- ptr = find_pthread_addr (inferior_ptid);
- for (regno = first_regno; regno <= last_regno; regno++)
- {
- if (regmap[regno] == -1)
- child_ops.to_store_registers (regno);
- else
- {
- u_int32_t *reg = &regbase[regmap[regno]];
- int off;
-
- /* Hang onto cached value */
-/*DEO:XXX*/
- memcpy(reg, deprecated_registers /*regcache_collect ()*/+ DEPRECATED_REGISTER_BYTE (regno),
- register_size (current_gdbarch, regno));
-
- /* And push out to inferior */
- off = (char *) reg - (char *) thread;
- write_memory (ptr + off,
-/*DEO:XXX*/
- deprecated_registers /*regcache_collect ()*/+ DEPRECATED_REGISTER_BYTE (regno),
- register_size (current_gdbarch, regno));
- }
- }
-}
-
-/* Get ready to modify the registers array. On machines which store
- individual registers, this doesn't need to do anything. On machines
- which store all the registers in one fell swoop, this makes sure
- that registers contains all the registers from the program being
- debugged. */
-
-static void
-freebsd_uthread_prepare_to_store (void)
-{
- child_ops.to_prepare_to_store ();
-}
-
-static int
-freebsd_uthread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
- int dowrite, struct mem_attrib *attrib,
- struct target_ops *target)
-{
- return child_ops.to_xfer_memory (memaddr, myaddr, len, dowrite,
- attrib, target);
-}
-
-/* Print status information about what we're accessing. */
-
-static void
-freebsd_uthread_files_info (struct target_ops *ignore)
-{
- child_ops.to_files_info (ignore);
-}
-
-static void
-freebsd_uthread_kill_inferior (void)
-{
- child_ops.to_kill ();
-}
-
-static void
-freebsd_uthread_notice_signals (ptid_t ptid)
-{
- child_ops.to_notice_signals (ptid);
-}
-
-/* Fork an inferior process, and start debugging it with /proc. */
-
-static void
-freebsd_uthread_create_inferior (char *exec_file, char *allargs, char **env,
- int from_tty)
-{
- child_ops.to_create_inferior (exec_file, allargs, env, from_tty);
-
- if (PIDGET(inferior_ptid) && freebsd_uthread_active)
- {
- read_thread_offsets ();
- push_target (&freebsd_uthread_ops);
- inferior_ptid = find_active_ptid ();
- add_thread (inferior_ptid);
- }
-}
-
-/* This routine is called to find out if the inferior is using threads.
- We check for the _thread_run and _thread_list globals. */
-
-void
-freebsd_uthread_new_objfile (struct objfile *objfile)
-{
- struct minimal_symbol *ms;
-
- if (!objfile)
- {
- freebsd_uthread_active = 0;
- return;
- }
-
- ms = lookup_minimal_symbol ("_thread_run", NULL, objfile);
-
- if (!ms)
- return;
-
- P_thread_run = SYMBOL_VALUE_ADDRESS (ms);
-
- ms = lookup_minimal_symbol ("_thread_list", NULL, objfile);
-
- if (!ms)
- return;
-
- P_thread_list = SYMBOL_VALUE_ADDRESS (ms);
-
-#define OFFSET_SYM(field) "_thread_" #field "_offset"
-#define LOOKUP_OFFSET(field) \
- do { \
- ms = lookup_minimal_symbol (OFFSET_SYM(field), NULL, objfile); \
- if (!ms) \
- return; \
- P_thread_##field##_offset = SYMBOL_VALUE_ADDRESS (ms); \
- } while (0);
-
-#define VALUE_SYM(name) "_thread_" #name "_value"
-#define LOOKUP_VALUE(name) \
- do { \
- ms = lookup_minimal_symbol (VALUE_SYM(name), NULL, objfile); \
- if (!ms) \
- return; \
- P_thread_##name##_value = SYMBOL_VALUE_ADDRESS (ms); \
- } while (0);
-
- LOOKUP_OFFSET(next);
- LOOKUP_OFFSET(uniqueid);
- LOOKUP_OFFSET(state);
- LOOKUP_OFFSET(name);
- LOOKUP_OFFSET(ctx);
-
- LOOKUP_VALUE(PS_RUNNING);
- LOOKUP_VALUE(PS_DEAD);
-
- freebsd_uthread_active = 1;
-}
-
-/* Clean up after the inferior dies. */
-
-static void
-freebsd_uthread_mourn_inferior ()
-{
- child_ops.to_mourn_inferior ();
- unpush_target (&freebsd_uthread_ops);
-}
-
-/* Mark our target-struct as eligible for stray "run" and "attach" commands. */
-
-static int
-freebsd_uthread_can_run ()
-{
- return child_suppress_run;
-}
-
-static int
-freebsd_uthread_thread_alive (ptid_t ptid)
-{
- struct cached_pthread *thread;
- int ret = 0;
-
- if (freebsd_uthread_attaching)
- return 1;
-
- /*
- * We can get called from child_ops.to_wait() which passes the underlying
- * pid (without a thread number).
- */
- if (TIDGET(ptid) == 0)
- return 1;
-
- if (find_pthread_addr (ptid) != 0)
- {
- thread = find_pthread (ptid);
- ret = (thread->state != PS_DEAD_value);
- }
-
- if (!ret)
- free_ptid(ptid);
-
- return ret;
-}
-
-static void
-freebsd_uthread_stop (void)
-{
- child_ops.to_stop ();
-}
-
-static void
-freebsd_uthread_find_new_threads (void)
-{
- CORE_ADDR ptr;
- int state;
- u_int64_t uniqueid;
-
- read_memory ((CORE_ADDR)P_thread_list,
- (char *)&ptr,
- sizeof ptr);
-
- while (ptr != 0)
- {
- READ_FIELD(ptr, int, state, state);
- READ_FIELD(ptr, u_int64_t, uniqueid, uniqueid);
- if (state != PS_DEAD_value &&
- !in_thread_list (find_ptid(uniqueid)))
- add_thread (find_ptid(uniqueid));
- ptr = read_pthread_next(ptr);
- }
-}
-
-/* MUST MATCH enum pthread_state */
-static const char *statenames[] = {
- "RUNNING",
- "SIGTHREAD",
- "MUTEX_WAIT",
- "COND_WAIT",
- "FDLR_WAIT",
- "FDLW_WAIT",
- "FDR_WAIT",
- "FDW_WAIT",
- "POLL_WAIT",
- "FILE_WAIT",
- "SELECT_WAIT",
- "SLEEP_WAIT",
- "WAIT_WAIT",
- "SIGSUSPEND",
- "SIGWAIT",
- "SPINBLOCK",
- "JOIN",
- "SUSPENDED",
- "DEAD",
- "DEADLOCK",
-};
-
-#if 0
-
-static int
-freebsd_uthread_get_thread_info (ref, selection, info)
- gdb_threadref *ref;
- int selection;
- struct gdb_ext_thread_info *info;
-{
- int pid = *ref;
- struct cached_pthread *thread = find_pthread (pid);
- struct cleanup *old_chain;
-
- old_chain = save_inferior_pid ();
- inferior_pid = main_pid;
-
- memset(&info->threadid, 0, OPAQUETHREADBYTES);
-
- memcpy(&info->threadid, ref, sizeof *ref);
- info->active = thread->state == PS_RUNNING_value;
- strcpy(info->display, statenames[thread->state]);
- if (thread->name)
- read_memory ((CORE_ADDR) thread->name, info->shortname, 32);
- else
- strcpy(info->shortname, "");
-
- do_cleanups (old_chain);
- return (0);
-}
-
-#endif
-
-char *
-freebsd_uthread_pid_to_str (ptid_t ptid)
-{
- static char buf[30];
-
- if (DEPRECATED_STREQ (current_target.to_shortname, "freebsd-uthreads"))
- sprintf (buf, "Process %d, Thread %ld",
- PIDGET(ptid), TIDGET(ptid));
- else
- sprintf (buf, "Process %d", PIDGET(ptid));
-
- return buf;
-}
-
-
-static void
-init_freebsd_uthread_ops ()
-{
- freebsd_uthread_ops.to_shortname = "freebsd-uthreads";
- freebsd_uthread_ops.to_longname = "FreeBSD uthreads";
- freebsd_uthread_ops.to_doc = "FreeBSD user threads support.";
- freebsd_uthread_ops.to_open = freebsd_uthread_open;
- freebsd_uthread_ops.to_attach = freebsd_uthread_attach;
- freebsd_uthread_ops.to_post_attach = freebsd_uthread_post_attach;
- freebsd_uthread_ops.to_detach = freebsd_uthread_detach;
- freebsd_uthread_ops.to_resume = freebsd_uthread_resume;
- freebsd_uthread_ops.to_wait = freebsd_uthread_wait;
- freebsd_uthread_ops.to_fetch_registers = freebsd_uthread_fetch_registers;
- freebsd_uthread_ops.to_store_registers = freebsd_uthread_store_registers;
- freebsd_uthread_ops.to_prepare_to_store = freebsd_uthread_prepare_to_store;
- freebsd_uthread_ops.to_xfer_memory = freebsd_uthread_xfer_memory;
- freebsd_uthread_ops.to_files_info = freebsd_uthread_files_info;
- freebsd_uthread_ops.to_insert_breakpoint = memory_insert_breakpoint;
- freebsd_uthread_ops.to_remove_breakpoint = memory_remove_breakpoint;
- freebsd_uthread_ops.to_terminal_init = terminal_init_inferior;
- freebsd_uthread_ops.to_terminal_inferior = terminal_inferior;
- freebsd_uthread_ops.to_terminal_ours_for_output = terminal_ours_for_output;
- freebsd_uthread_ops.to_terminal_ours = terminal_ours;
- freebsd_uthread_ops.to_terminal_info = child_terminal_info;
- freebsd_uthread_ops.to_kill = freebsd_uthread_kill_inferior;
- freebsd_uthread_ops.to_create_inferior = freebsd_uthread_create_inferior;
- freebsd_uthread_ops.to_mourn_inferior = freebsd_uthread_mourn_inferior;
- freebsd_uthread_ops.to_can_run = freebsd_uthread_can_run;
- freebsd_uthread_ops.to_notice_signals = freebsd_uthread_notice_signals;
- freebsd_uthread_ops.to_thread_alive = freebsd_uthread_thread_alive;
- freebsd_uthread_ops.to_stop = freebsd_uthread_stop;
- freebsd_uthread_ops.to_stratum = process_stratum;
- freebsd_uthread_ops.to_has_all_memory = 1;
- freebsd_uthread_ops.to_has_memory = 1;
- freebsd_uthread_ops.to_has_stack = 1;
- freebsd_uthread_ops.to_has_registers = 1;
- freebsd_uthread_ops.to_has_execution = 1;
- freebsd_uthread_ops.to_has_thread_control = 0;
- freebsd_uthread_ops.to_magic = OPS_MAGIC;
- freebsd_uthread_ops.to_find_new_threads = freebsd_uthread_find_new_threads;
- freebsd_uthread_ops.to_pid_to_str = freebsd_uthread_pid_to_str;
-#if 0
- freebsd_uthread_vec.get_thread_info = freebsd_uthread_get_thread_info;
-#endif
-}
-
-void
-_initialize_freebsd_uthread ()
-{
- init_freebsd_uthread_ops ();
- add_target (&freebsd_uthread_ops);
-
- target_new_objfile_chain = deprecated_target_new_objfile_hook;
- deprecated_target_new_objfile_hook = freebsd_uthread_new_objfile;
-
- child_suppress_run = 1;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 16:26:46 +0000