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Diffstat (limited to 'gdb/hpux-thread.c')
| -rw-r--r-- | gdb/hpux-thread.c | 586 |
1 files changed, 0 insertions, 586 deletions
diff --git a/gdb/hpux-thread.c b/gdb/hpux-thread.c deleted file mode 100644 index 981bb9d..0000000 --- a/gdb/hpux-thread.c +++ /dev/null @@ -1,586 +0,0 @@ -/* Low level interface for debugging HPUX/DCE threads for GDB, the GNU debugger. - Copyright 1996, 1998, 1999, 2000, 2001 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. */ - -/* 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 respectivly) 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 <sys/stat.h> -#include "gdbcore.h" - -extern int child_suppress_run; -extern struct target_ops child_ops; /* target vector for inftarg.c */ - -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 hpux_thread_resume (ptid_t ptid, int step, - enum target_signal signo); - -static void init_hpux_thread_ops (void); - -static struct target_ops hpux_thread_ops; - -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; -} - -/* 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 -hpux_thread_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 -hpux_thread_attach (char *args, int from_tty) -{ - child_ops.to_attach (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 (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 -hpux_thread_resume (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; - -#if 0 - if (pid != -1) - { - pid = thread_to_lwp (pid, -2); - if (pid == -2) /* Inactive thread */ - error ("This version of Solaris can't start inactive threads."); - } -#endif - - child_ops.to_resume (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 (ptid_t ptid, struct target_waitstatus *ourstatus) -{ - 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 = child_ops.to_wait (ptid, ourstatus); - - rtnval = find_active_thread (); - - do_cleanups (old_chain); - - return rtnval; -} - -static char regmap[NUM_REGS] = -{ - -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 (int regno) -{ - 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) - { - child_ops.to_fetch_registers (regno); - - do_cleanups (old_chain); - - return; - } - - if (regno == -1) - { - first_regno = 0; - last_regno = NUM_REGS - 1; - } - else - { - first_regno = regno; - last_regno = regno; - } - - for (regno = first_regno; regno <= last_regno; regno++) - { - if (regmap[regno] == -1) - child_ops.to_fetch_registers (regno); - else - { - unsigned char buf[MAX_REGISTER_RAW_SIZE]; - CORE_ADDR sp; - - sp = (CORE_ADDR) tcb_ptr->static_ctx.sp - 160; - - if (regno == FLAGS_REGNUM) - /* Flags must be 0 to avoid bogus value for SS_INSYSCALL */ - memset (buf, '\000', REGISTER_RAW_SIZE (regno)); - else if (regno == SP_REGNUM) - store_address (buf, sizeof sp, sp); - else if (regno == PC_REGNUM) - read_memory (sp - 20, buf, REGISTER_RAW_SIZE (regno)); - else - read_memory (sp + regmap[regno], buf, REGISTER_RAW_SIZE (regno)); - - supply_register (regno, buf); - } - } - - do_cleanups (old_chain); -} - -static void -hpux_thread_store_registers (int regno) -{ - 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) - { - child_ops.to_store_registers (regno); - - do_cleanups (old_chain); - - return; - } - - if (regno == -1) - { - first_regno = 0; - last_regno = NUM_REGS - 1; - } - else - { - first_regno = regno; - last_regno = regno; - } - - for (regno = first_regno; regno <= last_regno; regno++) - { - if (regmap[regno] == -1) - child_ops.to_store_registers (regno); - else - { - unsigned char buf[MAX_REGISTER_RAW_SIZE]; - CORE_ADDR sp; - - sp = (CORE_ADDR) tcb_ptr->static_ctx.sp - 160; - - if (regno == FLAGS_REGNUM) - child_ops.to_store_registers (regno); /* Let lower layer handle this... */ - else if (regno == SP_REGNUM) - { - write_memory ((CORE_ADDR) & tcb_ptr->static_ctx.sp, - registers + REGISTER_BYTE (regno), - REGISTER_RAW_SIZE (regno)); - tcb_ptr->static_ctx.sp = (cma__t_hppa_regs *) - (extract_address (registers + REGISTER_BYTE (regno), REGISTER_RAW_SIZE (regno)) + 160); - } - else if (regno == PC_REGNUM) - write_memory (sp - 20, - registers + REGISTER_BYTE (regno), - REGISTER_RAW_SIZE (regno)); - else - write_memory (sp + regmap[regno], - registers + REGISTER_BYTE (regno), - REGISTER_RAW_SIZE (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 (void) -{ - child_ops.to_prepare_to_store (); -} - -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 = - child_ops.to_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) -{ - child_ops.to_files_info (ignore); -} - -static void -hpux_thread_kill_inferior (void) -{ - child_ops.to_kill (); -} - -static void -hpux_thread_notice_signals (ptid_t ptid) -{ - child_ops.to_notice_signals (ptid); -} - -/* Fork an inferior process, and start debugging it with /proc. */ - -static void -hpux_thread_create_inferior (char *exec_file, char *allargs, char **env) -{ - child_ops.to_create_inferior (exec_file, allargs, env); - - 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. */ - -/* This new_objfile event is now managed by a chained function pointer. - * It is the callee's responsability to call the next client on the chain. - */ - -/* Saved pointer to previous owner of the new_objfile event. */ -static void (*target_new_objfile_chain) (struct objfile *); - -void -hpux_thread_new_objfile (struct objfile *objfile) -{ - struct minimal_symbol *ms; - - if (!objfile) - { - hpux_thread_active = 0; - goto quit; - } - - ms = lookup_minimal_symbol ("cma__g_known_threads", NULL, objfile); - - if (!ms) - goto quit; - - P_cma__g_known_threads = SYMBOL_VALUE_ADDRESS (ms); - - ms = lookup_minimal_symbol ("cma__g_current_thread", NULL, objfile); - - if (!ms) - goto quit; - - P_cma__g_current_thread = SYMBOL_VALUE_ADDRESS (ms); - - hpux_thread_active = 1; -quit: - /* Call predecessor on chain, if any. */ - if (target_new_objfile_chain) - target_new_objfile_chain (objfile); -} - -/* Clean up after the inferior dies. */ - -static void -hpux_thread_mourn_inferior (void) -{ - child_ops.to_mourn_inferior (); -} - -/* 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 (ptid_t ptid) -{ - return 1; -} - -static void -hpux_thread_stop (void) -{ - child_ops.to_stop (); -} - -/* Convert a pid to printable form. */ - -char * -hpux_pid_to_str (ptid_t ptid) -{ - static char buf[100]; - int pid = PIDGET (ptid); - - sprintf (buf, "Thread %ld", ptid_get_tid (ptid)); - - return buf; -} - -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.to_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 = 1; - hpux_thread_ops.to_has_memory = 1; - hpux_thread_ops.to_has_stack = 1; - hpux_thread_ops.to_has_registers = 1; - hpux_thread_ops.to_has_execution = 1; - 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. */ - target_new_objfile_chain = target_new_objfile_hook; - target_new_objfile_hook = hpux_thread_new_objfile; -} |