2005-01-13 Michael Snyder <msnyder@redhat.com>
* uw-thread.c: Whitespace tweaks.
This commit is contained in:
Michael Snyder
parent
0a4a0819f3
commit
887a3a14e2
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@ -1,5 +1,6 @@
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2005-01-13 Michael Snyder <msnyder@redhat.com>
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* uw-thread.c: Whitespace tweaks.
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* utils.c: Whitespace tweaks.
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* tracepoint.[ch]: Whitespace tweaks.
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* solist.h: Whitespace tweaks.
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152
gdb/uw-thread.c
152
gdb/uw-thread.c
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@ -94,7 +94,7 @@
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Between switch_begin and switch_complete or cancel_complete, the
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affected thread's LWP pointer is not reliable. It is possible that
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other parts of the thread's thread_map are also unreliable during
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that time. */
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that time. */
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#include "defs.h"
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@ -105,7 +105,7 @@
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#include <fcntl.h>
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/* <thread.h> includes <sys/priocntl.h>, which requires boolean_t from
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<sys/types.h>, which doesn't typedef boolean_t with gcc. */
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<sys/types.h>, which doesn't typedef boolean_t with gcc. */
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#define boolean_t int
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#include <thread.h>
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@ -113,7 +113,7 @@
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#include <synch.h> /* for UnixWare 2.x */
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/* Prototypes for supply_gregset etc. */
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/* Prototypes for supply_gregset etc. */
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#include "gregset.h"
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/* Offset from SP to first arg on stack at first instruction of a
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@ -124,15 +124,15 @@
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#define SP_ARG0 (1 * 4)
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#endif
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/* Whether to emit debugging output. */
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/* Whether to emit debugging output. */
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#define DEBUG 0
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/* Default debugging output file, overridden by envvar UWTHR_DEBUG. */
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/* Default debugging output file, overridden by envvar UWTHR_DEBUG. */
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#define DEBUG_FILE "/dev/tty"
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/* #if DEBUG, write string S to the debugging output channel. */
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/* #if DEBUG, write string S to the debugging output channel. */
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#if !DEBUG
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# define DBG(fmt_and_args)
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@ -143,7 +143,7 @@
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#endif
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/* Back end to CALL_BASE() and TRY_BASE(): evaluate CALL, then convert
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inferior_ptid to a composite thread/process id. */
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inferior_ptid to a composite thread/process id. */
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#define CALL_BASE_1(call) \
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do { \
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@ -156,7 +156,7 @@ do { \
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evaluate base_ops function CALL, and then convert inferior_ptid back to a
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composite thread/process id.
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Otherwise, issue an error message and return nonlocally. */
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Otherwise, issue an error message and return nonlocally. */
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#define CALL_BASE(call) \
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do { \
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@ -166,7 +166,7 @@ do { \
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} while (0)
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/* Like CALL_BASE(), but instead of returning nonlocally on error, set
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*CALLED to whether the inferior_ptid conversion was successful. */
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*CALLED to whether the inferior_ptid conversion was successful. */
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#define TRY_BASE(call, called) \
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do { \
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@ -174,7 +174,7 @@ do { \
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CALL_BASE_1 (call); \
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} while (0)
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/* Information passed by thread_iter() to its callback parameter. */
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/* Information passed by thread_iter() to its callback parameter. */
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typedef struct {
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struct thread_map map;
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@ -182,7 +182,7 @@ typedef struct {
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CORE_ADDR mapp;
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} iter_t;
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/* Private thread data for the thread_info struct. */
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/* Private thread data for the thread_info struct. */
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struct private_thread_info {
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int stable; /* 0 if libthread.so is modifying thread map */
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@ -192,18 +192,18 @@ struct private_thread_info {
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};
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/* procfs.c's target-specific operations. */
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/* procfs.c's target-specific operations. */
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extern struct target_ops procfs_ops;
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/* Flag to prevent procfs.c from starting inferior processes. */
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/* Flag to prevent procfs.c from starting inferior processes. */
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extern int procfs_suppress_run;
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/* This module's target-specific operations. */
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/* This module's target-specific operations. */
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static struct target_ops uw_thread_ops;
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/* Copy of the target over which uw_thread_ops is pushed. This is
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more convenient than a pointer to procfs_ops or core_ops, because
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they lack current_target's default callbacks. */
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they lack current_target's default callbacks. */
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static struct target_ops base_ops;
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/* Saved pointer to previous owner of
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@ -216,26 +216,26 @@ static void (*target_new_objfile_chain)(struct objfile *);
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Except for module one-time intialization and where otherwise
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documented, no functions in this module get called when
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!uw_thread_active. */
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!uw_thread_active. */
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static int uw_thread_active;
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/* For efficiency, cache the addresses of libthread.so's _thr_debug
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structure, its thr_brk stub function, and the main thread's map. */
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structure, its thr_brk stub function, and the main thread's map. */
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static CORE_ADDR thr_debug_addr;
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static CORE_ADDR thr_brk_addr;
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static CORE_ADDR thr_map_main;
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/* Remember the thread most recently marked as switching. Necessary because
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libthread.so passes null map when calling stub with tc_*_complete. */
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libthread.so passes null map when calling stub with tc_*_complete. */
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static struct thread_info *switchto_thread;
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/* Cleanup chain for safely restoring inferior_ptid after CALL_BASE. */
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/* Cleanup chain for safely restoring inferior_ptid after CALL_BASE. */
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static struct cleanup *infpid_cleanup;
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#if DEBUG
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/* Helper function for DBG() macro: if printf-style FMT is non-null, format it
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with args and display the result on the debugging output channel. */
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with args and display the result on the debugging output channel. */
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static void
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dbg (char *fmt, ...)
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@ -267,7 +267,7 @@ dbg (char *fmt, ...)
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}
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#if 0
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/* Return a string representing composite PID's components. */
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/* Return a string representing composite PID's components. */
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static char *
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dbgpid (ptid_t ptid)
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@ -287,7 +287,7 @@ dbgpid (ptid_t ptid)
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return buf;
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}
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/* Return a string representing thread state CHANGE. */
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/* Return a string representing thread state CHANGE. */
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static char *
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dbgchange (enum thread_change change)
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@ -306,7 +306,7 @@ dbgchange (enum thread_change change)
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}
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}
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/* Return a string representing thread STATE. */
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/* Return a string representing thread STATE. */
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static char *
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dbgstate (int state)
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@ -327,7 +327,7 @@ dbgstate (int state)
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#endif /* DEBUG */
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/* Read the contents of _thr_debug into *DEBUGP. Return success. */
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/* Read the contents of _thr_debug into *DEBUGP. Return success. */
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static int
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read_thr_debug (struct thread_debug *debugp)
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@ -338,7 +338,7 @@ read_thr_debug (struct thread_debug *debugp)
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}
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/* Read into MAP the contents of the thread map at inferior process address
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MAPP. Return success. */
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MAPP. Return success. */
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static int
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read_map (CORE_ADDR mapp, struct thread_map *map)
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@ -349,7 +349,7 @@ read_map (CORE_ADDR mapp, struct thread_map *map)
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}
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/* Read into LWP the contents of the lwp decriptor at inferior process address
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LWPP. Return success. */
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LWPP. Return success. */
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static int
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read_lwp (CORE_ADDR lwpp, __lwp_desc_t *lwp)
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@ -365,7 +365,7 @@ read_lwp (CORE_ADDR lwpp, __lwp_desc_t *lwp)
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where <map> is the thread's struct thread_map and <lwp> if non-null is the
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thread's current __lwp_desc_t.
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If a call to FUNC returns nonzero, return that value; otherwise, return 0. */
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If a call to FUNC returns nonzero, return that value; otherwise, return 0. */
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static int
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thread_iter (int (*func)(iter_t *, void *), void *data)
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@ -403,7 +403,7 @@ thread_iter (int (*func)(iter_t *, void *), void *data)
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}
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}
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/* Deactivate user-mode thread support. */
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/* Deactivate user-mode thread support. */
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static void
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deactivate_uw_thread (void)
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@ -414,7 +414,7 @@ deactivate_uw_thread (void)
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}
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/* Return the composite lwp/process id corresponding to composite
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id PID. If PID is a thread with no lwp, return 0. */
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id PID. If PID is a thread with no lwp, return 0. */
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static ptid_t
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thr_to_lwp (ptid_t ptid)
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@ -436,7 +436,7 @@ thr_to_lwp (ptid_t ptid)
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}
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/* find_thread_lwp() callback: return whether TP describes a thread
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associated with lwp id DATA. */
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associated with lwp id DATA. */
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static int
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find_thread_lwp_callback (struct thread_info *tp, void *data)
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@ -455,7 +455,7 @@ find_thread_lwp_callback (struct thread_info *tp, void *data)
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}
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/* If a thread is associated with lwp id LWPID, return the corresponding
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member of the global thread list; otherwise, return null. */
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member of the global thread list; otherwise, return null. */
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static struct thread_info *
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find_thread_lwp (int lwpid)
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@ -464,7 +464,7 @@ find_thread_lwp (int lwpid)
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}
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/* Return the composite thread/process id corresponding to composite
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id PID. If PID is an lwp with no thread, return PID. */
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id PID. If PID is an lwp with no thread, return PID. */
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static ptid_t
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lwp_to_thr (ptid_t ptid)
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@ -487,7 +487,7 @@ lwp_to_thr (ptid_t ptid)
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}
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/* do_cleanups() callback: convert inferior_ptid to a composite
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thread/process id after having made a procfs call. */
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thread/process id after having made a procfs call. */
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static void
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thr_infpid (void *unused)
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@ -499,7 +499,7 @@ thr_infpid (void *unused)
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}
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/* If possible, convert inferior_ptid to a composite lwp/process id in
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preparation for making a procfs call. Return success. */
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preparation for making a procfs call. Return success. */
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static int
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lwp_infpid (void)
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@ -517,7 +517,7 @@ lwp_infpid (void)
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}
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/* Add to the global thread list a new user-mode thread with system id THRID,
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lwp id LWPID, map address MAPP, and composite thread/process PID. */
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lwp id LWPID, map address MAPP, and composite thread/process PID. */
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static void
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add_thread_uw (int thrid, int lwpid, CORE_ADDR mapp, ptid_t ptid)
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@ -539,7 +539,7 @@ add_thread_uw (int thrid, int lwpid, CORE_ADDR mapp, ptid_t ptid)
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/* notice_threads() and find_main() callback: if the thread list doesn't
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already contain the thread described by ITER, add it if it's the main
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thread or if !DATA. */
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thread or if !DATA. */
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static int
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notice_thread (iter_t *iter, void *data)
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@ -554,7 +554,7 @@ notice_thread (iter_t *iter, void *data)
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return 0;
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}
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/* Add to the thread list any threads it doesn't already contain. */
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/* Add to the thread list any threads it doesn't already contain. */
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static void
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notice_threads (void)
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@ -562,7 +562,7 @@ notice_threads (void)
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thread_iter (notice_thread, NULL);
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}
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/* Return the address of the main thread's map. On error, return 0. */
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/* Return the address of the main thread's map. On error, return 0. */
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static CORE_ADDR
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find_main (void)
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@ -580,7 +580,7 @@ find_main (void)
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/* Attach to process specified by ARGS, then initialize for debugging it
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and wait for the trace-trap that results from attaching.
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This function only gets called with uw_thread_active == 0. */
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This function only gets called with uw_thread_active == 0. */
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static void
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uw_thread_attach (char *args, int from_tty)
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@ -590,7 +590,7 @@ uw_thread_attach (char *args, int from_tty)
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thr_infpid (NULL);
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}
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/* Detach from the process attached to by uw_thread_attach(). */
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/* Detach from the process attached to by uw_thread_attach(). */
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static void
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uw_thread_detach (char *args, int from_tty)
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@ -600,7 +600,7 @@ uw_thread_detach (char *args, int from_tty)
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}
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/* Tell the inferior process to continue running thread PID if >= 0
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and all threads otherwise. */
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and all threads otherwise. */
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static void
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uw_thread_resume (ptid_t ptid, int step, enum target_signal signo)
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@ -617,7 +617,7 @@ uw_thread_resume (ptid_t ptid, int step, enum target_signal signo)
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/* If the trap we just received from lwp PID was due to a breakpoint
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on the libthread.so debugging stub, update this module's state
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accordingly. */
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accordingly. */
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static void
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libthread_stub (ptid_t ptid)
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@ -630,11 +630,11 @@ libthread_stub (ptid_t ptid)
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ptid_t tid = null_ptid;
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struct thread_info *info;
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/* Check for stub breakpoint. */
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/* Check for stub breakpoint. */
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if (read_pc_pid (ptid) - DECR_PC_AFTER_BREAK != thr_brk_addr)
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return;
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/* Retrieve stub args. */
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/* Retrieve stub args. */
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sp = read_register_pid (SP_REGNUM, ptid);
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if (!base_ops.deprecated_xfer_memory (sp + SP_ARG0, (char *)&mapp,
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sizeof (mapp), 0, NULL, &base_ops))
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@ -645,10 +645,10 @@ libthread_stub (ptid_t ptid)
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goto err;
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/* create_inferior() may not have finished yet, so notice the main
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thread to ensure that it's displayed first by add_thread(). */
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thread to ensure that it's displayed first by add_thread(). */
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mapp_main = find_main ();
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/* Notice thread creation, deletion, or stability change. */
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/* Notice thread creation, deletion, or stability change. */
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switch (change) {
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case tc_switch_begin:
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if (!mapp) /* usually means main thread */
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@ -706,7 +706,7 @@ libthread_stub (ptid_t ptid)
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(b) it may have been a spurious switch following a tc_thread_exit.
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Therefore, explicitly query the thread's lwp before caching it in
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its thread list entry. */
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its thread list entry. */
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if (!read_map (switchto_thread->private->mapp, &map))
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goto err;
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@ -737,7 +737,7 @@ libthread_stub (ptid_t ptid)
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dbgchange (change), tid ? dbgstate (map.thr_state) : ""));
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}
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/* Wait for thread/lwp/process ID if >= 0 or for any thread otherwise. */
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/* Wait for thread/lwp/process ID if >= 0 or for any thread otherwise. */
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static ptid_t
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uw_thread_wait (ptid_t ptid, struct target_waitstatus *status)
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@ -757,7 +757,7 @@ uw_thread_wait (ptid_t ptid, struct target_waitstatus *status)
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}
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/* Tell gdb about the registers in the thread/lwp/process specified by
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inferior_ptid. */
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inferior_ptid. */
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static void
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uw_thread_fetch_registers (int regno)
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@ -780,7 +780,7 @@ uw_thread_fetch_registers (int regno)
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}
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/* Store gdb's current view of the register set into the thread/lwp/process
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specified by inferior_ptid. */
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specified by inferior_ptid. */
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static void
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uw_thread_store_registers (int regno)
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@ -788,7 +788,7 @@ uw_thread_store_registers (int regno)
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CALL_BASE (base_ops.to_store_registers (regno));
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}
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/* Prepare to modify the registers array. */
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/* Prepare to modify the registers array. */
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static void
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uw_thread_prepare_to_store (void)
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@ -798,7 +798,7 @@ uw_thread_prepare_to_store (void)
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/* Fork an inferior process and start debugging it.
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This function only gets called with uw_thread_active == 0. */
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This function only gets called with uw_thread_active == 0. */
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static void
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uw_thread_create_inferior (char *exec_file, char *allargs, char **env,
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@ -815,7 +815,7 @@ uw_thread_create_inferior (char *exec_file, char *allargs, char **env,
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}
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}
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/* Kill and forget about the inferior process. */
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/* Kill and forget about the inferior process. */
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static void
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uw_thread_kill (void)
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@ -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;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue