+++ /dev/null
-/* Low level interface for debugging HPUX/DCE threads for GDB, the GNU
- debugger.
-
- Copyright (C) 1996, 1998, 1999, 2000, 2001, 2004, 2007, 2008, 2009, 2010,
- 2011 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 3 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, see <http://www.gnu.org/licenses/>. */
-
-/* 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 HPUX user-mode thread implementation.
-
- HPUX threads are true user-mode threads, which are invoked via the cma_*
- and pthread_* (DCE and Posix respectively) 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. */
-
-#include "defs.h"
-
-#define _CMA_NOWRAPPERS_
-
-#include <cma_tcb_defs.h>
-#include <cma_deb_core.h>
-#include "gdbthread.h"
-#include "target.h"
-#include "inferior.h"
-#include "regcache.h"
-#include <fcntl.h>
-#include <string.h>
-#include "gdb_stat.h"
-#include "gdbcore.h"
-#include "hppa-tdep.h"
-#include "observer.h"
-
-extern int child_suppress_run;
-
-extern void _initialize_hpux_thread (void);
-
-struct string_map
- {
- int num;
- char *str;
- };
-
-static int hpux_thread_active = 0;
-
-static ptid_t main_ptid; /* Real process ID */
-
-static CORE_ADDR P_cma__g_known_threads;
-static CORE_ADDR P_cma__g_current_thread;
-
-static void init_hpux_thread_ops (void);
-
-static struct target_ops hpux_thread_ops;
-\f
-static ptid_t find_active_thread (void);
-
-static int cached_thread;
-static cma__t_int_tcb cached_tcb;
-
-static ptid_t
-find_active_thread (void)
-{
- static cma__t_int_tcb tcb;
- CORE_ADDR tcb_ptr;
-
- read_memory ((CORE_ADDR) P_cma__g_current_thread,
- (char *) &tcb_ptr,
- sizeof tcb_ptr);
-
- read_memory (tcb_ptr, (char *) &tcb, sizeof tcb);
-
- return (ptid_build (PIDGET (main_ptid), 0,
- cma_thread_get_unique (&tcb.prolog.client_thread)));
-}
-
-static cma__t_int_tcb *find_tcb (ptid_t ptid);
-
-static cma__t_int_tcb *
-find_tcb (ptid_t ptid)
-{
- cma__t_known_object queue_header;
- cma__t_queue *queue_ptr;
- int thread = ptid_get_tid (ptid);
-
- if (thread == cached_thread)
- return &cached_tcb;
-
- read_memory ((CORE_ADDR) P_cma__g_known_threads,
- (char *) &queue_header,
- sizeof queue_header);
-
- for (queue_ptr = queue_header.queue.flink;
- queue_ptr != (cma__t_queue *) P_cma__g_known_threads;
- queue_ptr = cached_tcb.threads.flink)
- {
- cma__t_int_tcb *tcb_ptr;
-
- tcb_ptr = cma__base (queue_ptr, threads, cma__t_int_tcb);
-
- read_memory ((CORE_ADDR) tcb_ptr, (char *) &cached_tcb,
- sizeof cached_tcb);
-
- if (cached_tcb.header.type == cma__c_obj_tcb)
- if (cma_thread_get_unique (&cached_tcb.prolog.client_thread) == thread)
- {
- cached_thread = thread;
- return &cached_tcb;
- }
- }
-
- error (_("Can't find TCB %d"), thread);
- return NULL;
-}
-\f
-/* 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. */
-
-static void
-hpux_thread_open (char *arg, int from_tty)
-{
- deprecated_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
-hpux_thread_attach (struct target_ops *ops, char *args, int from_tty)
-{
- deprecated_child_ops.to_attach (&deprecated_child_ops, args, from_tty);
-
- /* XXX - might want to iterate over all the threads and register them. */
-}
-
-/* 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
-hpux_thread_detach (struct target_ops *ops, char *args, int from_tty)
-{
- deprecated_child_ops.to_detach (&deprecated_child_ops, 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
-hpux_thread_resume (struct target_ops *ops,
- ptid_t ptid, int step, enum target_signal signo)
-{
- struct cleanup *old_chain;
-
- old_chain = save_inferior_ptid ();
-
- ptid = main_ptid;
- inferior_ptid = main_ptid;
-
- deprecated_child_ops.to_resume (&deprecated_child_ops, ptid, step, signo);
-
- cached_thread = 0;
-
- do_cleanups (old_chain);
-}
-
-/* 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
-hpux_thread_wait (struct target_ops *ops, ptid_t ptid,
- struct target_waitstatus *ourstatus, int options)
-{
- ptid_t rtnval;
- struct cleanup *old_chain;
-
- old_chain = save_inferior_ptid ();
-
- inferior_ptid = main_ptid;
-
- if (!ptid_equal (ptid, minus_one_ptid))
- ptid = main_ptid;
-
- rtnval = deprecated_child_ops.to_wait (&deprecated_child_ops,
- ptid, ourstatus, options);
-
- rtnval = find_active_thread ();
-
- do_cleanups (old_chain);
-
- return rtnval;
-}
-
-static char regmap[] =
-{
- -2, -1, -1, 0, 4, 8, 12, 16, 20, 24, /* flags, r1 -> r9 */
- 28, 32, 36, 40, 44, 48, 52, 56, 60, -1, /* r10 -> r19 */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* r20 -> r29 */
-
- /* r30, r31, sar, pcoqh, pcsqh, pcoqt, pcsqt, eiem, iir, isr */
- -2, -1, -1, -2, -1, -1, -1, -1, -1, -1,
-
- /* ior, ipsw, goto, sr4, sr0, sr1, sr2, sr3, sr5, sr6 */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-
- /* sr7, cr0, cr8, cr9, ccr, cr12, cr13, cr24, cr25, cr26 */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-
- -1, -1, -1, -1, /* mpsfu_high, mpsfu_low, mpsfu_ovflo, pad */
- 144, -1, -1, -1, -1, -1, -1, -1, /* fpsr, fpe1 -> fpe7 */
- -1, -1, -1, -1, -1, -1, -1, -1, /* fr4 -> fr7 */
- -1, -1, -1, -1, -1, -1, -1, -1, /* fr8 -> fr11 */
- 136, -1, 128, -1, 120, -1, 112, -1, /* fr12 -> fr15 */
- 104, -1, 96, -1, 88, -1, 80, -1, /* fr16 -> fr19 */
- 72, -1, 64, -1, -1, -1, -1, -1, /* fr20 -> fr23 */
- -1, -1, -1, -1, -1, -1, -1, -1, /* fr24 -> fr27 */
- -1, -1, -1, -1, -1, -1, -1, -1, /* fr28 -> fr31 */
-};
-
-static void
-hpux_thread_fetch_registers (struct target_ops *ops,
- struct regcache *regcache, int regno)
-{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- cma__t_int_tcb tcb, *tcb_ptr;
- struct cleanup *old_chain;
- int i;
- int first_regno, last_regno;
-
- tcb_ptr = find_tcb (inferior_ptid);
-
- old_chain = save_inferior_ptid ();
-
- inferior_ptid = main_ptid;
-
- if (tcb_ptr->state == cma__c_state_running)
- {
- deprecated_child_ops.to_fetch_registers (&deprecated_child_ops,
- regcache, regno);
-
- do_cleanups (old_chain);
-
- return;
- }
-
- if (regno == -1)
- {
- first_regno = 0;
- last_regno = gdbarch_num_regs (gdbarch) - 1;
- }
- else
- {
- first_regno = regno;
- last_regno = regno;
- }
-
- for (regno = first_regno; regno <= last_regno; regno++)
- {
- if (regmap[regno] == -1)
- deprecated_child_ops.to_fetch_registers (&deprecated_child_ops,
- regcache, regno);
- else
- {
- unsigned char buf[MAX_REGISTER_SIZE];
- CORE_ADDR sp;
-
- sp = (CORE_ADDR) tcb_ptr->static_ctx.sp - 160;
-
- if (regno == HPPA_FLAGS_REGNUM)
- /* Flags must be 0 to avoid bogus value for SS_INSYSCALL. */
- memset (buf, '\000', register_size (gdbarch, regno));
- else if (regno == HPPA_SP_REGNUM)
- store_unsigned_integer (buf, sizeof sp, byte_order, sp);
- else if (regno == HPPA_PCOQ_HEAD_REGNUM)
- read_memory (sp - 20, buf, register_size (gdbarch, regno));
- else
- read_memory (sp + regmap[regno], buf,
- register_size (gdbarch, regno));
-
- regcache_raw_supply (regcache, regno, buf);
- }
- }
-
- do_cleanups (old_chain);
-}
-
-static void
-hpux_thread_store_registers (struct target_ops *ops,
- struct regcache *regcache, int regno)
-{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- cma__t_int_tcb tcb, *tcb_ptr;
- struct cleanup *old_chain;
- int i;
- int first_regno, last_regno;
-
- tcb_ptr = find_tcb (inferior_ptid);
-
- old_chain = save_inferior_ptid ();
-
- inferior_ptid = main_ptid;
-
- if (tcb_ptr->state == cma__c_state_running)
- {
- deprecated_child_ops.to_store_registers (&deprecated_child_ops,
- regcache, regno);
-
- do_cleanups (old_chain);
-
- return;
- }
-
- if (regno == -1)
- {
- first_regno = 0;
- last_regno = gdbarch_num_regs (gdbarch) - 1;
- }
- else
- {
- first_regno = regno;
- last_regno = regno;
- }
-
- for (regno = first_regno; regno <= last_regno; regno++)
- {
- if (regmap[regno] == -1)
- deprecated_child_ops.to_store_registers (regcache, regno);
- else
- {
- unsigned char buf[MAX_REGISTER_SIZE];
- CORE_ADDR sp;
-
- sp = (CORE_ADDR) tcb_ptr->static_ctx.sp - 160;
-
- if (regno == HPPA_FLAGS_REGNUM)
- {
- /* Let lower layer handle this... */
- deprecated_child_ops.to_store_registers
- (&deprecated_child_ops, regcache, regno);
- }
- else if (regno == HPPA_SP_REGNUM)
- {
- regcache_raw_collect (regcache, regno, buf);
- write_memory ((CORE_ADDR) &tcb_ptr->static_ctx.sp, buf,
- register_size (gdbarch, regno));
- tcb_ptr->static_ctx.sp
- = (cma__t_hppa_regs *) ((CORE_ADDR) buf + 160);
- }
- else if (regno == HPPA_PCOQ_HEAD_REGNUM)
- {
- regcache_raw_collect (regcache, regno, buf);
- write_memory (sp - 20, buf,
- register_size (gdbarch, regno));
- }
- else
- {
- regcache_raw_collect (regcache, regno, buf);
- write_memory (sp + regmap[regno], buf,
- register_size (gdbarch, regno));
- }
- }
- }
-
- do_cleanups (old_chain);
-}
-
-/* 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
-hpux_thread_prepare_to_store (struct regcache *regcache)
-{
- deprecated_child_ops.to_prepare_to_store (regcache);
-}
-
-static int
-hpux_thread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
- int dowrite, struct mem_attrib *attribs,
- struct target_ops *target)
-{
- int retval;
- struct cleanup *old_chain;
-
- old_chain = save_inferior_ptid ();
-
- inferior_ptid = main_ptid;
-
- retval =
- deprecated_child_ops.deprecated_xfer_memory (memaddr, myaddr, len,
- dowrite, attribs, target);
-
- do_cleanups (old_chain);
-
- return retval;
-}
-
-/* Print status information about what we're accessing. */
-
-static void
-hpux_thread_files_info (struct target_ops *ignore)
-{
- deprecated_child_ops.to_files_info (ignore);
-}
-
-static void
-hpux_thread_kill_inferior (struct target_ops *ops)
-{
- deprecated_child_ops.to_kill (&deprecated_child_ops);
-}
-
-static void
-hpux_thread_notice_signals (ptid_t ptid)
-{
- deprecated_child_ops.to_notice_signals (ptid);
-}
-
-/* Fork an inferior process, and start debugging it with /proc. */
-
-static void
-hpux_thread_create_inferior (struct target_ops *ops, char *exec_file,
- char *allargs, char **env, int from_tty)
-{
- deprecated_child_ops.to_create_inferior (&deprecated_child_ops,
- exec_file, allargs, env, from_tty);
-
- if (hpux_thread_active)
- {
- main_ptid = inferior_ptid;
-
- push_target (&hpux_thread_ops);
-
- inferior_ptid = find_active_thread ();
-
- add_thread (inferior_ptid);
- }
-}
-
-/* This routine is called whenever a new symbol table is read in, or when all
- symbol tables are removed. libthread_db can only be initialized when it
- finds the right variables in libthread.so. Since it's a shared library,
- those variables don't show up until the library gets mapped and the symbol
- table is read in. */
-
-static void
-hpux_thread_new_objfile (struct objfile *objfile)
-{
- struct minimal_symbol *ms;
-
- if (!objfile)
- {
- hpux_thread_active = 0;
- return;
- }
-
- ms = lookup_minimal_symbol ("cma__g_known_threads", NULL, objfile);
-
- if (!ms)
- return;
-
- P_cma__g_known_threads = SYMBOL_VALUE_ADDRESS (ms);
-
- ms = lookup_minimal_symbol ("cma__g_current_thread", NULL, objfile);
-
- if (!ms)
- return;
-
- P_cma__g_current_thread = SYMBOL_VALUE_ADDRESS (ms);
-
- hpux_thread_active = 1;
-}
-
-/* Clean up after the inferior dies. */
-
-static void
-hpux_thread_mourn_inferior (void)
-{
- deprecated_child_ops.to_mourn_inferior (&deprecated_child_ops);
-}
-
-/* Mark our target-struct as eligible for stray "run" and "attach"
- commands. */
-
-static int
-hpux_thread_can_run (void)
-{
- return child_suppress_run;
-}
-
-static int
-hpux_thread_alive (struct target_ops *ops, ptid_t ptid)
-{
- return 1;
-}
-
-static void
-hpux_thread_stop (ptid_t ptid)
-{
- deprecated_child_ops.to_stop (ptid);
-}
-\f
-static void
-init_hpux_thread_ops (void)
-{
- hpux_thread_ops.to_shortname = "hpux-threads";
- hpux_thread_ops.to_longname = "HPUX threads and pthread.";
- hpux_thread_ops.to_doc = "HPUX threads and pthread support.";
- hpux_thread_ops.to_open = hpux_thread_open;
- hpux_thread_ops.to_attach = hpux_thread_attach;
- hpux_thread_ops.to_detach = hpux_thread_detach;
- hpux_thread_ops.to_resume = hpux_thread_resume;
- hpux_thread_ops.to_wait = hpux_thread_wait;
- hpux_thread_ops.to_fetch_registers = hpux_thread_fetch_registers;
- hpux_thread_ops.to_store_registers = hpux_thread_store_registers;
- hpux_thread_ops.to_prepare_to_store = hpux_thread_prepare_to_store;
- hpux_thread_ops.deprecated_xfer_memory = hpux_thread_xfer_memory;
- hpux_thread_ops.to_files_info = hpux_thread_files_info;
- hpux_thread_ops.to_insert_breakpoint = memory_insert_breakpoint;
- hpux_thread_ops.to_remove_breakpoint = memory_remove_breakpoint;
- hpux_thread_ops.to_terminal_init = terminal_init_inferior;
- hpux_thread_ops.to_terminal_inferior = terminal_inferior;
- hpux_thread_ops.to_terminal_ours_for_output = terminal_ours_for_output;
- hpux_thread_ops.to_terminal_save_ours = terminal_save_ours;
- hpux_thread_ops.to_terminal_ours = terminal_ours;
- hpux_thread_ops.to_terminal_info = child_terminal_info;
- hpux_thread_ops.to_kill = hpux_thread_kill_inferior;
- hpux_thread_ops.to_create_inferior = hpux_thread_create_inferior;
- hpux_thread_ops.to_mourn_inferior = hpux_thread_mourn_inferior;
- hpux_thread_ops.to_can_run = hpux_thread_can_run;
- hpux_thread_ops.to_notice_signals = hpux_thread_notice_signals;
- hpux_thread_ops.to_thread_alive = hpux_thread_alive;
- hpux_thread_ops.to_stop = hpux_thread_stop;
- hpux_thread_ops.to_stratum = process_stratum;
- hpux_thread_ops.to_has_all_memory = default_child_has_all_memory;
- hpux_thread_ops.to_has_memory = default_child_has_memory;
- hpux_thread_ops.to_has_stack = default_child_has_stack;
- hpux_thread_ops.to_has_registers = default_child_has_registers;
- hpux_thread_ops.to_has_execution = default_child_has_execution;
- hpux_thread_ops.to_magic = OPS_MAGIC;
-}
-
-void
-_initialize_hpux_thread (void)
-{
- init_hpux_thread_ops ();
- add_target (&hpux_thread_ops);
-
- child_suppress_run = 1;
- /* Hook into new_objfile notification. */
- observer_attach_new_objfile (hpux_thread_new_objfile);
-}
projects / platform / upstream / binutils.git / commitdiff