diff options
Diffstat (limited to 'gdb/uw-thread.c')
| -rw-r--r-- | gdb/uw-thread.c | 152 |
1 files changed, 76 insertions, 76 deletions
diff --git a/gdb/uw-thread.c b/gdb/uw-thread.c index a7b6bc2..3bee2e6 100644 --- a/gdb/uw-thread.c +++ b/gdb/uw-thread.c @@ -94,7 +94,7 @@ Between switch_begin and switch_complete or cancel_complete, the affected thread's LWP pointer is not reliable. It is possible that other parts of the thread's thread_map are also unreliable during - that time. */ + that time. */ #include "defs.h" @@ -105,7 +105,7 @@ #include <fcntl.h> /* <thread.h> includes <sys/priocntl.h>, which requires boolean_t from - <sys/types.h>, which doesn't typedef boolean_t with gcc. */ + <sys/types.h>, which doesn't typedef boolean_t with gcc. */ #define boolean_t int #include <thread.h> @@ -113,7 +113,7 @@ #include <synch.h> /* for UnixWare 2.x */ -/* Prototypes for supply_gregset etc. */ +/* Prototypes for supply_gregset etc. */ #include "gregset.h" /* Offset from SP to first arg on stack at first instruction of a @@ -124,15 +124,15 @@ #define SP_ARG0 (1 * 4) #endif -/* Whether to emit debugging output. */ +/* Whether to emit debugging output. */ #define DEBUG 0 -/* Default debugging output file, overridden by envvar UWTHR_DEBUG. */ +/* Default debugging output file, overridden by envvar UWTHR_DEBUG. */ #define DEBUG_FILE "/dev/tty" -/* #if DEBUG, write string S to the debugging output channel. */ +/* #if DEBUG, write string S to the debugging output channel. */ #if !DEBUG # define DBG(fmt_and_args) @@ -143,7 +143,7 @@ #endif /* Back end to CALL_BASE() and TRY_BASE(): evaluate CALL, then convert - inferior_ptid to a composite thread/process id. */ + inferior_ptid to a composite thread/process id. */ #define CALL_BASE_1(call) \ do { \ @@ -156,7 +156,7 @@ do { \ evaluate base_ops function CALL, and then convert inferior_ptid back to a composite thread/process id. - Otherwise, issue an error message and return nonlocally. */ + Otherwise, issue an error message and return nonlocally. */ #define CALL_BASE(call) \ do { \ @@ -166,7 +166,7 @@ do { \ } while (0) /* Like CALL_BASE(), but instead of returning nonlocally on error, set - *CALLED to whether the inferior_ptid conversion was successful. */ + *CALLED to whether the inferior_ptid conversion was successful. */ #define TRY_BASE(call, called) \ do { \ @@ -174,7 +174,7 @@ do { \ CALL_BASE_1 (call); \ } while (0) -/* Information passed by thread_iter() to its callback parameter. */ +/* Information passed by thread_iter() to its callback parameter. */ typedef struct { struct thread_map map; @@ -182,7 +182,7 @@ typedef struct { CORE_ADDR mapp; } iter_t; -/* Private thread data for the thread_info struct. */ +/* Private thread data for the thread_info struct. */ struct private_thread_info { int stable; /* 0 if libthread.so is modifying thread map */ @@ -192,18 +192,18 @@ struct private_thread_info { }; -/* procfs.c's target-specific operations. */ +/* procfs.c's target-specific operations. */ extern struct target_ops procfs_ops; -/* Flag to prevent procfs.c from starting inferior processes. */ +/* Flag to prevent procfs.c from starting inferior processes. */ extern int procfs_suppress_run; -/* This module's target-specific operations. */ +/* This module's target-specific operations. */ static struct target_ops uw_thread_ops; /* Copy of the target over which uw_thread_ops is pushed. This is more convenient than a pointer to procfs_ops or core_ops, because - they lack current_target's default callbacks. */ + they lack current_target's default callbacks. */ static struct target_ops base_ops; /* Saved pointer to previous owner of @@ -216,26 +216,26 @@ static void (*target_new_objfile_chain)(struct objfile *); Except for module one-time intialization and where otherwise documented, no functions in this module get called when - !uw_thread_active. */ + !uw_thread_active. */ static int uw_thread_active; /* For efficiency, cache the addresses of libthread.so's _thr_debug - structure, its thr_brk stub function, and the main thread's map. */ + structure, its thr_brk stub function, and the main thread's map. */ static CORE_ADDR thr_debug_addr; static CORE_ADDR thr_brk_addr; static CORE_ADDR thr_map_main; /* Remember the thread most recently marked as switching. Necessary because - libthread.so passes null map when calling stub with tc_*_complete. */ + libthread.so passes null map when calling stub with tc_*_complete. */ static struct thread_info *switchto_thread; -/* Cleanup chain for safely restoring inferior_ptid after CALL_BASE. */ +/* Cleanup chain for safely restoring inferior_ptid after CALL_BASE. */ static struct cleanup *infpid_cleanup; #if DEBUG /* Helper function for DBG() macro: if printf-style FMT is non-null, format it - with args and display the result on the debugging output channel. */ + with args and display the result on the debugging output channel. */ static void dbg (char *fmt, ...) @@ -267,7 +267,7 @@ dbg (char *fmt, ...) } #if 0 -/* Return a string representing composite PID's components. */ +/* Return a string representing composite PID's components. */ static char * dbgpid (ptid_t ptid) @@ -287,7 +287,7 @@ dbgpid (ptid_t ptid) return buf; } -/* Return a string representing thread state CHANGE. */ +/* Return a string representing thread state CHANGE. */ static char * dbgchange (enum thread_change change) @@ -306,7 +306,7 @@ dbgchange (enum thread_change change) } } -/* Return a string representing thread STATE. */ +/* Return a string representing thread STATE. */ static char * dbgstate (int state) @@ -327,7 +327,7 @@ dbgstate (int state) #endif /* DEBUG */ -/* Read the contents of _thr_debug into *DEBUGP. Return success. */ +/* Read the contents of _thr_debug into *DEBUGP. Return success. */ static int read_thr_debug (struct thread_debug *debugp) @@ -338,7 +338,7 @@ read_thr_debug (struct thread_debug *debugp) } /* Read into MAP the contents of the thread map at inferior process address - MAPP. Return success. */ + MAPP. Return success. */ static int read_map (CORE_ADDR mapp, struct thread_map *map) @@ -349,7 +349,7 @@ read_map (CORE_ADDR mapp, struct thread_map *map) } /* Read into LWP the contents of the lwp decriptor at inferior process address - LWPP. Return success. */ + LWPP. Return success. */ static int read_lwp (CORE_ADDR lwpp, __lwp_desc_t *lwp) @@ -365,7 +365,7 @@ read_lwp (CORE_ADDR lwpp, __lwp_desc_t *lwp) where <map> is the thread's struct thread_map and <lwp> if non-null is the thread's current __lwp_desc_t. - If a call to FUNC returns nonzero, return that value; otherwise, return 0. */ + If a call to FUNC returns nonzero, return that value; otherwise, return 0. */ static int thread_iter (int (*func)(iter_t *, void *), void *data) @@ -403,7 +403,7 @@ thread_iter (int (*func)(iter_t *, void *), void *data) } } -/* Deactivate user-mode thread support. */ +/* Deactivate user-mode thread support. */ static void deactivate_uw_thread (void) @@ -414,7 +414,7 @@ deactivate_uw_thread (void) } /* Return the composite lwp/process id corresponding to composite - id PID. If PID is a thread with no lwp, return 0. */ + id PID. If PID is a thread with no lwp, return 0. */ static ptid_t thr_to_lwp (ptid_t ptid) @@ -436,7 +436,7 @@ thr_to_lwp (ptid_t ptid) } /* find_thread_lwp() callback: return whether TP describes a thread - associated with lwp id DATA. */ + associated with lwp id DATA. */ static int find_thread_lwp_callback (struct thread_info *tp, void *data) @@ -455,7 +455,7 @@ find_thread_lwp_callback (struct thread_info *tp, void *data) } /* If a thread is associated with lwp id LWPID, return the corresponding - member of the global thread list; otherwise, return null. */ + member of the global thread list; otherwise, return null. */ static struct thread_info * find_thread_lwp (int lwpid) @@ -464,7 +464,7 @@ find_thread_lwp (int lwpid) } /* Return the composite thread/process id corresponding to composite - id PID. If PID is an lwp with no thread, return PID. */ + id PID. If PID is an lwp with no thread, return PID. */ static ptid_t lwp_to_thr (ptid_t ptid) @@ -487,7 +487,7 @@ lwp_to_thr (ptid_t ptid) } /* do_cleanups() callback: convert inferior_ptid to a composite - thread/process id after having made a procfs call. */ + thread/process id after having made a procfs call. */ static void thr_infpid (void *unused) @@ -499,7 +499,7 @@ thr_infpid (void *unused) } /* If possible, convert inferior_ptid to a composite lwp/process id in - preparation for making a procfs call. Return success. */ + preparation for making a procfs call. Return success. */ static int lwp_infpid (void) @@ -517,7 +517,7 @@ lwp_infpid (void) } /* Add to the global thread list a new user-mode thread with system id THRID, - lwp id LWPID, map address MAPP, and composite thread/process PID. */ + lwp id LWPID, map address MAPP, and composite thread/process PID. */ static void add_thread_uw (int thrid, int lwpid, CORE_ADDR mapp, ptid_t ptid) @@ -539,7 +539,7 @@ add_thread_uw (int thrid, int lwpid, CORE_ADDR mapp, ptid_t ptid) /* notice_threads() and find_main() callback: if the thread list doesn't already contain the thread described by ITER, add it if it's the main - thread or if !DATA. */ + thread or if !DATA. */ static int notice_thread (iter_t *iter, void *data) @@ -554,7 +554,7 @@ notice_thread (iter_t *iter, void *data) return 0; } -/* Add to the thread list any threads it doesn't already contain. */ +/* Add to the thread list any threads it doesn't already contain. */ static void notice_threads (void) @@ -562,7 +562,7 @@ notice_threads (void) thread_iter (notice_thread, NULL); } -/* Return the address of the main thread's map. On error, return 0. */ +/* Return the address of the main thread's map. On error, return 0. */ static CORE_ADDR find_main (void) @@ -580,7 +580,7 @@ find_main (void) /* Attach to process specified by ARGS, then initialize for debugging it and wait for the trace-trap that results from attaching. - This function only gets called with uw_thread_active == 0. */ + This function only gets called with uw_thread_active == 0. */ static void uw_thread_attach (char *args, int from_tty) @@ -590,7 +590,7 @@ uw_thread_attach (char *args, int from_tty) thr_infpid (NULL); } -/* Detach from the process attached to by uw_thread_attach(). */ +/* Detach from the process attached to by uw_thread_attach(). */ static void uw_thread_detach (char *args, int from_tty) @@ -600,7 +600,7 @@ uw_thread_detach (char *args, int from_tty) } /* Tell the inferior process to continue running thread PID if >= 0 - and all threads otherwise. */ + and all threads otherwise. */ static void uw_thread_resume (ptid_t ptid, int step, enum target_signal signo) @@ -617,7 +617,7 @@ uw_thread_resume (ptid_t ptid, int step, enum target_signal signo) /* If the trap we just received from lwp PID was due to a breakpoint on the libthread.so debugging stub, update this module's state - accordingly. */ + accordingly. */ static void libthread_stub (ptid_t ptid) @@ -630,11 +630,11 @@ libthread_stub (ptid_t ptid) ptid_t tid = null_ptid; struct thread_info *info; - /* Check for stub breakpoint. */ + /* Check for stub breakpoint. */ if (read_pc_pid (ptid) - DECR_PC_AFTER_BREAK != thr_brk_addr) return; - /* Retrieve stub args. */ + /* Retrieve stub args. */ sp = read_register_pid (SP_REGNUM, ptid); if (!base_ops.deprecated_xfer_memory (sp + SP_ARG0, (char *)&mapp, sizeof (mapp), 0, NULL, &base_ops)) @@ -645,10 +645,10 @@ libthread_stub (ptid_t ptid) goto err; /* create_inferior() may not have finished yet, so notice the main - thread to ensure that it's displayed first by add_thread(). */ + thread to ensure that it's displayed first by add_thread(). */ mapp_main = find_main (); - /* Notice thread creation, deletion, or stability change. */ + /* Notice thread creation, deletion, or stability change. */ switch (change) { case tc_switch_begin: if (!mapp) /* usually means main thread */ @@ -706,7 +706,7 @@ libthread_stub (ptid_t ptid) (b) it may have been a spurious switch following a tc_thread_exit. Therefore, explicitly query the thread's lwp before caching it in - its thread list entry. */ + its thread list entry. */ if (!read_map (switchto_thread->private->mapp, &map)) goto err; @@ -737,7 +737,7 @@ libthread_stub (ptid_t ptid) dbgchange (change), tid ? dbgstate (map.thr_state) : "")); } -/* Wait for thread/lwp/process ID if >= 0 or for any thread otherwise. */ +/* Wait for thread/lwp/process ID if >= 0 or for any thread otherwise. */ static ptid_t uw_thread_wait (ptid_t ptid, struct target_waitstatus *status) @@ -757,7 +757,7 @@ uw_thread_wait (ptid_t ptid, struct target_waitstatus *status) } /* Tell gdb about the registers in the thread/lwp/process specified by - inferior_ptid. */ + inferior_ptid. */ static void uw_thread_fetch_registers (int regno) @@ -780,7 +780,7 @@ uw_thread_fetch_registers (int regno) } /* Store gdb's current view of the register set into the thread/lwp/process - specified by inferior_ptid. */ + specified by inferior_ptid. */ static void uw_thread_store_registers (int regno) @@ -788,7 +788,7 @@ uw_thread_store_registers (int regno) CALL_BASE (base_ops.to_store_registers (regno)); } -/* Prepare to modify the registers array. */ +/* Prepare to modify the registers array. */ static void uw_thread_prepare_to_store (void) @@ -798,7 +798,7 @@ uw_thread_prepare_to_store (void) /* Fork an inferior process and start debugging it. - This function only gets called with uw_thread_active == 0. */ + This function only gets called with uw_thread_active == 0. */ static void uw_thread_create_inferior (char *exec_file, char *allargs, char **env, @@ -815,7 +815,7 @@ uw_thread_create_inferior (char *exec_file, char *allargs, char **env, } } -/* Kill and forget about the inferior process. */ +/* Kill and forget about the inferior process. */ static void uw_thread_kill (void) @@ -823,7 +823,7 @@ uw_thread_kill (void) base_ops.to_kill (); } -/* Clean up after the inferior exits. */ +/* Clean up after the inferior exits. */ static void uw_thread_mourn_inferior (void) @@ -834,7 +834,7 @@ uw_thread_mourn_inferior (void) /* Return whether this module can attach to and run processes. - This function only gets called with uw_thread_active == 0. */ + This function only gets called with uw_thread_active == 0. */ static int uw_thread_can_run (void) @@ -842,7 +842,7 @@ uw_thread_can_run (void) return procfs_suppress_run; } -/* Return whether thread PID is still valid. */ +/* Return whether thread PID is still valid. */ static int uw_thread_alive (ptid_t ptid) @@ -851,11 +851,11 @@ uw_thread_alive (ptid_t ptid) return base_ops.to_thread_alive (ptid); /* If it's in the thread list, it's valid, because otherwise - libthread_stub() would have deleted it. */ + libthread_stub() would have deleted it. */ return in_thread_list (ptid); } -/* Add to the thread list any threads and lwps it doesn't already contain. */ +/* Add to the thread list any threads and lwps it doesn't already contain. */ static void uw_thread_find_new_threads (void) @@ -866,7 +866,7 @@ uw_thread_find_new_threads (void) } /* Return a string for pretty-printing PID in "info threads" output. - This may be called by either procfs.c or by generic gdb. */ + This may be called by either procfs.c or by generic gdb. */ static char * uw_thread_pid_to_str (ptid_t ptid) @@ -875,7 +875,7 @@ uw_thread_pid_to_str (ptid_t ptid) static char buf[sizeof (FMT) + 3 * sizeof (long)]; if (!ISTID (ptid)) - /* core_ops says "process foo", so call procfs_ops explicitly. */ + /* core_ops says "process foo", so call procfs_ops explicitly. */ return procfs_ops.to_pid_to_str (ptid); sprintf (buf, FMT, TIDGET (ptid)); @@ -884,7 +884,7 @@ uw_thread_pid_to_str (ptid_t ptid) } /* Return a string displaying INFO state information in "info threads" - output. */ + output. */ static char * uw_extra_thread_info (struct thread_info *info) @@ -934,7 +934,7 @@ uw_extra_thread_info (struct thread_info *info) libthread.so loading happens while (a) an inferior process is being started by procfs and (b) a core image is being loaded. - This function often gets called with uw_thread_active == 0. */ + This function often gets called with uw_thread_active == 0. */ static void libthread_init (void) @@ -945,48 +945,48 @@ libthread_init (void) struct breakpoint *b; int one = 1; - /* Don't initialize twice. */ + /* Don't initialize twice. */ if (uw_thread_active) return; - /* Check whether libthread.so has been loaded. */ + /* Check whether libthread.so has been loaded. */ if (!(ms = lookup_minimal_symbol ("_thr_debug", NULL, NULL))) return; - /* Cache _thr_debug's address. */ + /* Cache _thr_debug's address. */ if (!(thr_debug_addr = SYMBOL_VALUE_ADDRESS (ms))) return; /* Initialize base_ops.deprecated_xfer_memory(). */ base_ops = current_target; - /* Load _thr_debug's current contents. */ + /* Load _thr_debug's current contents. */ if (!read_thr_debug (&debug)) return; /* User code (e.g. my test programs) may dereference _thr_debug, - making it availble to GDB before shared libs are loaded. */ + making it availble to GDB before shared libs are loaded. */ if (!debug.thr_map) return; /* libthread.so has been loaded, and the current_target should now - reflect core_ops or procfs_ops. */ + reflect core_ops or procfs_ops. */ push_target (&uw_thread_ops); /* must precede notice_threads() */ uw_thread_active = 1; if (!target_has_execution) - /* Locate threads in core file. */ + /* Locate threads in core file. */ notice_threads (); else { - /* Set a breakpoint on the stub function provided by libthread.so. */ + /* Set a breakpoint on the stub function provided by libthread.so. */ thr_brk_addr = (CORE_ADDR)debug.thr_brk; if (!(b = create_thread_event_breakpoint (thr_brk_addr))) goto err; - /* Activate the stub function. */ + /* Activate the stub function. */ onp = (CORE_ADDR)&((struct thread_debug *)thr_debug_addr)->thr_debug_on; if (!base_ops.deprecated_xfer_memory ((CORE_ADDR)onp, (char *)&one, sizeof (one), 1, NULL, &base_ops)) @@ -995,7 +995,7 @@ libthread_init (void) goto err; } - /* Prepare for finding the main thread, which doesn't yet exist. */ + /* Prepare for finding the main thread, which doesn't yet exist. */ thr_map_main = 0; } @@ -1014,7 +1014,7 @@ libthread_init (void) If OBJFILE is null, libthread.so has gone away, so stop debugging user-mode threads. - This function often gets called with uw_thread_active == 0. */ + This function often gets called with uw_thread_active == 0. */ static void uw_thread_new_objfile (struct objfile *objfile) @@ -1029,7 +1029,7 @@ uw_thread_new_objfile (struct objfile *objfile) target_new_objfile_chain (objfile); } -/* Initialize uw_thread_ops. */ +/* Initialize uw_thread_ops. */ static void init_uw_thread_ops (void) @@ -1057,7 +1057,7 @@ init_uw_thread_ops (void) } /* Module startup initialization function, automagically called by - init.c. */ + init.c. */ void _initialize_uw_thread (void) @@ -1067,7 +1067,7 @@ _initialize_uw_thread (void) procfs_suppress_run = 1; - /* Notice when libthread.so gets loaded. */ + /* Notice when libthread.so gets loaded. */ target_new_objfile_chain = deprecated_target_new_objfile_hook; deprecated_target_new_objfile_hook = uw_thread_new_objfile; } |