#include "inferior.h"
#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.
- */
+/* <thread.h> includes <sys/priocntl.h>, which requires boolean_t from
+ <sys/types.h>, which doesn't typedef boolean_t with gcc. */
+
#define boolean_t int
#include <thread.h>
#undef boolean_t
#include <synch.h> /* for UnixWare 2.x */
-/*
- * 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)
# define DBG2(fmt_and_args)
# define DBG2(fmt_and_args)
#endif
-/*
- * Back end to CALL_BASE() and TRY_BASE(): evaluate CALL, then convert
- * inferior_pid to a composite thread/process id.
- */
+/* Back end to CALL_BASE() and TRY_BASE(): evaluate CALL, then convert
+ inferior_pid to a composite thread/process id. */
+
#define CALL_BASE_1(call) \
do { \
DBG2(("CALL_BASE(" #call ")")); \
do_cleanups (infpid_cleanup); \
} while (0)
-/*
- * If inferior_pid can be converted to a composite lwp/process id, do so,
- * evaluate base_ops function CALL, and then convert inferior_pid back to a
- * composite thread/process id.
- *
- * Otherwise, issue an error message and return nonlocally.
- */
+/* If inferior_pid can be converted to a composite lwp/process id, do so,
+ evaluate base_ops function CALL, and then convert inferior_pid back to a
+ composite thread/process id.
+
+ Otherwise, issue an error message and return nonlocally. */
+
#define CALL_BASE(call) \
do { \
if (!lwp_infpid ()) \
CALL_BASE_1 (call); \
} while (0)
-/*
- * Like CALL_BASE(), but instead of returning nonlocally on error, set
- * *CALLED to whether the inferior_pid conversion was successful.
- */
+/* Like CALL_BASE(), but instead of returning nonlocally on error, set
+ *CALLED to whether the inferior_pid conversion was successful. */
+
#define TRY_BASE(call, called) \
do { \
if ((*(called) = lwp_infpid ())) \
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;
__lwp_desc_t lwp;
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 */
int thrid; /* thread id assigned by libthread.so */
#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.
- */
+/* 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. */
+
static void
dbg (char *fmt, ...)
{
}
#if 0
-/*
- * Return a string representing composite PID's components.
- */
+/* Return a string representing composite PID's components. */
+
static char *
dbgpid (int pid)
{
return buf;
}
-/*
- * Return a string representing thread state CHANGE.
- */
+/* Return a string representing thread state CHANGE. */
+
static char *
dbgchange (enum thread_change change)
{
}
}
-/*
- * Return a string representing thread STATE.
- */
+/* Return a string representing thread STATE. */
+
static char *
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)
{
sizeof (*debugp), 0, &base_ops);
}
-/*
- * Read into MAP the contents of the thread map at inferior process address
- * MAPP. Return success.
- */
+/* Read into MAP the contents of the thread map at inferior process address
+ MAPP. Return success. */
+
static int
read_map (CORE_ADDR mapp, struct thread_map *map)
{
sizeof (*map), 0, &base_ops);
}
-/*
- * Read into LWP the contents of the lwp decriptor at inferior process address
- * LWPP. Return success.
- */
+/* Read into LWP the contents of the lwp decriptor at inferior process address
+ LWPP. Return success. */
+
static int
read_lwp (CORE_ADDR lwpp, __lwp_desc_t *lwp)
{
sizeof (*lwp), 0, &base_ops);
}
-/*
- * Iterate through all user threads, applying FUNC(<map>, <lwp>, DATA) until
- * (a) FUNC returns nonzero,
- * (b) FUNC has been applied to all threads, or
- * (c) an error occurs,
- * 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.
- */
+/* Iterate through all user threads, applying FUNC(<map>, <lwp>, DATA) until
+ (a) FUNC returns nonzero,
+ (b) FUNC has been applied to all threads, or
+ (c) an error occurs,
+ 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. */
+
static int
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)
{
+ remove_thread_event_breakpoints ();
uw_thread_active = 0;
unpush_target (&uw_thread_ops);
}
-/*
- * Return the composite lwp/process id corresponding to composite
- * id PID. If PID is a thread with no lwp, return 0.
- */
+/* Return the composite lwp/process id corresponding to composite
+ id PID. If PID is a thread with no lwp, return 0. */
+
static int
thr_to_lwp (int pid)
{
return lid;
}
-/*
- * find_thread_lwp() callback: return whether TP describes a thread
- * associated with lwp id DATA.
- */
+/* find_thread_lwp() callback: return whether TP describes a thread
+ associated with lwp id DATA. */
+
static int
find_thread_lwp_callback (struct thread_info *tp, void *data)
{
return 1;
}
-/*
- * If a thread is associated with lwp id LWPID, return the corresponding
- * member of the global thread list; otherwise, return null.
- */
+/* If a thread is associated with lwp id LWPID, return the corresponding
+ member of the global thread list; otherwise, return null. */
+
static struct thread_info *
find_thread_lwp (int lwpid)
{
return iterate_over_threads (find_thread_lwp_callback, (void *)lwpid);
}
-/*
- * Return the composite thread/process id corresponding to composite
- * id PID. If PID is an lwp with no thread, return PID.
- */
+/* Return the composite thread/process id corresponding to composite
+ id PID. If PID is an lwp with no thread, return PID. */
+
static int
lwp_to_thr (int pid)
{
return tid;
}
-/*
- * do_cleanups() callback: convert inferior_pid to a composite
- * thread/process id after having made a procfs call.
- */
+/* do_cleanups() callback: convert inferior_pid to a composite
+ thread/process id after having made a procfs call. */
+
static void
thr_infpid (void *unused)
{
inferior_pid = pid;
}
-/*
- * If possible, convert inferior_pid to a composite lwp/process id in
- * preparation for making a procfs call. Return success.
- */
+/* If possible, convert inferior_pid to a composite lwp/process id in
+ preparation for making a procfs call. Return success. */
+
static int
lwp_infpid (void)
{
return 1;
}
-/*
- * 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.
- */
+/* 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. */
+
static void
add_thread_uw (int thrid, int lwpid, CORE_ADDR mapp, int pid)
{
printf_unfiltered ("[New %s]\n", target_pid_to_str (pid));
}
-/*
- * 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.
- */
+/* 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. */
+
static int
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)
{
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)
{
return thr_map_main;
}
-/*
- * 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.
- */
+/* 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. */
+
static void
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)
{
base_ops.to_detach (args, from_tty);
}
-/*
- * Tell the inferior process to continue running thread PID if >= 0
- * and all threads otherwise.
- */
+/* Tell the inferior process to continue running thread PID if >= 0
+ and all threads otherwise. */
+
static void
uw_thread_resume (int pid, int step, enum target_signal signo)
{
CALL_BASE (base_ops.to_resume (pid, step, 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.
- */
+/* 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. */
+
static void
libthread_stub (int pid)
{
if (change == tc_switch_complete)
{
- /*
- * If switchto_thread is the main thread, then (a) the corresponding
- * tc_switch_begin probably received a null map argument and therefore
- * (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.
- */
+ /* If switchto_thread is the main thread, then (a) the corresponding
+ tc_switch_begin probably received a null map argument and therefore
+ (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. */
+
if (!read_map (switchto_thread->private->mapp, &map))
goto err;
if (map.thr_lwpp)
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 int
uw_thread_wait (int pid, struct target_waitstatus *status)
{
return lwp_to_thr (pid);
}
-/*
- * Tell gdb about the registers in the thread/lwp/process specified by
- * inferior_pid.
- */
+/* Tell gdb about the registers in the thread/lwp/process specified by
+ inferior_pid. */
+
static void
uw_thread_fetch_registers (int regno)
{
supply_fpregset (&map.thr_ucontext.uc_mcontext.fpregs);
}
-/*
- * Store gdb's current view of the register set into the thread/lwp/process
- * specified by inferior_pid.
- */
+/* Store gdb's current view of the register set into the thread/lwp/process
+ specified by inferior_pid. */
+
static void
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)
{
CALL_BASE (base_ops.to_prepare_to_store ());
}
-/*
- * Fork an inferior process and start debugging it.
- *
- * This function only gets called with uw_thread_active == 0.
- */
+/* Fork an inferior process and start debugging it.
+
+ This function only gets called with uw_thread_active == 0. */
+
static void
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)
{
base_ops.to_kill ();
}
-/*
- * Clean up after the inferior exits.
- */
+/* Clean up after the inferior exits. */
+
static void
uw_thread_mourn_inferior (void)
{
- remove_thread_event_breakpoints ();
deactivate_uw_thread ();
base_ops.to_mourn_inferior ();
}
-/*
- * Return whether this module can attach to and run processes.
- *
- * This function only gets called with uw_thread_active == 0.
- */
+/* Return whether this module can attach to and run processes.
+
+ This function only gets called with uw_thread_active == 0. */
+
static int
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 (int pid)
{
return in_thread_list (pid);
}
-/*
- * 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)
{
notice_threads ();
}
-/*
- * Return a string for pretty-printing PID in "info threads" output.
- * This may be called by either procfs.c or by generic gdb.
- */
+/* Return a string for pretty-printing PID in "info threads" output.
+ This may be called by either procfs.c or by generic gdb. */
+
static char *
uw_thread_pid_to_str (int pid)
{
return buf;
}
-/*
- * Return a string displaying INFO state information in "info threads"
- * output.
- */
+/* Return a string displaying INFO state information in "info threads"
+ output. */
+
static char *
uw_extra_thread_info (struct thread_info *info)
{
return buf;
}
-/*
- * Check whether libthread.so has just been loaded, and if so, try to
- * initialize user-space thread debugging support.
- *
- * 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.
- */
+/* Check whether libthread.so has just been loaded, and if so, try to
+ initialize user-space thread debugging support.
+
+ 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. */
+
static void
libthread_init (void)
{
deactivate_uw_thread ();
}
-/*
- * target_new_objfile_hook callback.
- *
- * If OBJFILE is non-null, check whether libthread.so was just loaded,
- * and if so, prepare for user-mode thread debugging.
- *
- * 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.
- */
+/* target_new_objfile_hook callback.
+
+ If OBJFILE is non-null, check whether libthread.so was just loaded,
+ and if so, prepare for user-mode thread debugging.
+
+ 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. */
+
static void
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)
{
uw_thread_ops.to_magic = OPS_MAGIC;
}
-/*
- * Module startup initialization function, automagically called by
- * init.c.
- */
+/* Module startup initialization function, automagically called by
+ init.c. */
+
void
_initialize_uw_thread (void)
{
projects / binutils-gdb.git / commitdiff