binutils-gdb/gdb/gdb-events.sh

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#!/bin/sh
# User Interface Events.
# Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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#
# Contributed by Cygnus Solutions.
#
# 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.
#
# What happens next:
#
# The gdb-events.h/gdb-events.c files this script generates are commited
# and published.
# Any UI module that is installing events is changed so that the
# events are installed using the ``set_gdb_events()'' and
# ``gdb_event_hooks()'' interfaces. There could prove to be an issue
# here with respect to annotate. We might need to accomodate a hook
# stack that allows several ui blocks to install their own events.
# Each of the variable events (as currently generated) is converted
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# to either a straight function call or a function call with a
# predicate.
IFS=:
read="class returntype function formal actual attrib"
function_list ()
{
# category:
# # -> disable
# * -> compatibility - pointer variable that is initialized
# by set_gdb_events().
# ? -> Predicate and function proper.
# f -> always call (must have a void returntype)
# return-type
# name
# formal argument list
# actual argument list
# attributes
# description
cat <<EOF |
f:void:breakpoint_create:int b:b
f:void:breakpoint_delete:int b:b
f:void:breakpoint_modify:int b:b
f:void:tracepoint_create:int number:number
f:void:tracepoint_delete:int number:number
f:void:tracepoint_modify:int number:number
f:void:architecture_changed:void
f:void:target_changed:void
f:void:selected_frame_level_changed:int level:level
f:void:selected_thread_changed:int thread_num:thread_num
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#*:void:annotate_starting_hook:void
#*:void:annotate_stopped_hook:void
#*:void:annotate_signalled_hook:void
#*:void:annotate_signal_hook:void
#*:void:annotate_exited_hook:void
##*:void:print_register_hook:int
##*:CORE_ADDR:find_toc_address_hook:CORE_ADDR
##*:void:sparc_print_register_hook:int regno:regno
#*:void:target_resume_hook:void
#*:void:target_wait_loop_hook:void
#*:void:init_gdb_hook:char *argv0:argv0
#*:void:command_loop_hook:void
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#*:void:fputs_unfiltered_hook:const char *linebuff,struct ui_file *stream:linebuff, stream
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#*:void:print_frame_info_listing_hook:struct symtab *s, int line, int stopline, int noerror:s, line, stopline, noerror
#*:int:query_hook:const char *query, va_list args:query, args
#*:void:warning_hook:const char *string, va_list args:string, args
#*:void:target_output_hook:char *b:b
#*:void:interactive_hook:void
#*:void:registers_changed_hook:void
#*:void:readline_begin_hook:char *format, ...:format
#*:char *:readline_hook:char *prompt:prompt
#*:void:readline_end_hook:void
#*:int:target_wait_hook:int pid, struct target_waitstatus *status:pid, status
#*:void:call_command_hook:struct cmd_list_element *c, char *cmd, int from_tty:c, cmd, from_tty
#*:NORETURN void:error_hook:void:: ATTR_NORETURN
#*:void:error_begin_hook:void
##*:int:target_architecture_hook:const struct bfd_arch_info *
#*:void:exec_file_display_hook:char *filename:filename
#*:void:file_changed_hook:char *filename:filename
##*:void:specify_exec_file_hook:
#*:int:gdb_load_progress_hook:char *section, unsigned long num:section, num
#*:void:pre_add_symbol_hook:char *name:name
#*:void:post_add_symbol_hook:void
#*:void:selected_frame_level_changed_hook:int level:level
#*:int:gdb_loop_hook:int signo:signo
##*:void:solib_create_inferior_hook:void
##*:void:xcoff_relocate_symtab_hook:unsigned int
EOF
grep -v '^#'
}
copyright ()
{
cat <<EOF
/* User Interface Events.
Copyright 1999, 2001, 2002 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions.
This file is part of GDB.
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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.
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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.
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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. */
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/* Work in progress */
/* This file was created with the aid of \`\`gdb-events.sh''.
The bourn shell script \`\`gdb-events.sh'' creates the files
\`\`new-gdb-events.c'' and \`\`new-gdb-events.h and then compares
them against the existing \`\`gdb-events.[hc]''. Any differences
found being reported.
If editing this file, please also run gdb-events.sh and merge any
changes into that script. Conversely, when making sweeping changes
to this file, modifying gdb-events.sh and using its output may
prove easier. */
EOF
}
#
# The .h file
#
exec > new-gdb-events.h
copyright
cat <<EOF
#ifndef GDB_EVENTS_H
#define GDB_EVENTS_H
#ifndef WITH_GDB_EVENTS
#define WITH_GDB_EVENTS 1
#endif
EOF
# pointer declarations
echo ""
echo ""
cat <<EOF
/* COMPAT: pointer variables for old, unconverted events.
A call to set_gdb_events() will automatically update these. */
EOF
echo ""
function_list | while eval read $read
do
case "${class}" in
"*" )
echo "extern ${returntype} (*${function}_event) (${formal})${attrib};"
;;
esac
done
# function typedef's
echo ""
echo ""
cat <<EOF
/* Type definition of all hook functions.
Recommended pratice is to first declare each hook function using
the below ftype and then define it. */
EOF
echo ""
function_list | while eval read $read
do
echo "typedef ${returntype} (gdb_events_${function}_ftype) (${formal});"
done
# gdb_events object
echo ""
echo ""
cat <<EOF
/* gdb-events: object. */
EOF
echo ""
echo "struct gdb_events"
echo " {"
function_list | while eval read $read
do
echo " gdb_events_${function}_ftype *${function}${attrib};"
done
echo " };"
# function declarations
echo ""
echo ""
cat <<EOF
/* Interface into events functions.
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Where a *_p() predicate is present, it must be called before
calling the hook proper. */
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EOF
function_list | while eval read $read
do
case "${class}" in
"*" ) continue ;;
"?" )
echo "extern int ${function}_p (void);"
echo "extern ${returntype} ${function}_event (${formal})${attrib};"
;;
"f" )
echo "extern ${returntype} ${function}_event (${formal})${attrib};"
;;
esac
done
# function macros
echo ""
echo ""
cat <<EOF
/* When GDB_EVENTS are not being used, completly disable them. */
EOF
echo ""
echo "#if !WITH_GDB_EVENTS"
function_list | while eval read $read
do
case "${class}" in
"*" ) continue ;;
"?" )
echo "#define ${function}_event_p() 0"
echo "#define ${function}_event(${actual}) 0"
;;
"f" )
echo "#define ${function}_event(${actual}) 0"
;;
esac
done
echo "#endif"
# our set function
cat <<EOF
/* Install custom gdb-events hooks. */
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extern struct gdb_events *set_gdb_event_hooks (struct gdb_events *vector);
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/* Deliver any pending events. */
extern void gdb_events_deliver (struct gdb_events *vector);
/* Clear event handlers */
extern void clear_gdb_event_hooks (void);
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#if !WITH_GDB_EVENTS
#define set_gdb_events(x) 0
#define set_gdb_event_hooks(x) 0
#define gdb_events_deliver(x) 0
#endif
EOF
# close it off
echo ""
echo "#endif"
exec 1>&2
#../move-if-change new-gdb-events.h gdb-events.h
if test -r gdb-events.h
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then
diff -c gdb-events.h new-gdb-events.h
if [ $? = 1 ]
then
echo "gdb-events.h changed? cp new-gdb-events.h gdb-events.h" 1>&2
fi
else
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echo "File missing? mv new-gdb-events.h gdb-events.h" 1>&2
fi
#
# C file
#
exec > new-gdb-events.c
copyright
cat <<EOF
#include "defs.h"
#include "gdb-events.h"
#include "gdbcmd.h"
#if WITH_GDB_EVENTS
static struct gdb_events null_event_hooks;
static struct gdb_events queue_event_hooks;
static struct gdb_events *current_event_hooks = &null_event_hooks;
#endif
int gdb_events_debug;
EOF
# global pointer variables - always have this
#echo ""
#function_list | while eval read $read
#do
# case "${class}" in
# "*" )
# echo "${returntype} (*${function}_event) (${formal})${attrib} = 0;"
# ;;
# esac
#done
# function bodies
echo ""
echo "#if WITH_GDB_EVENTS"
function_list | while eval read $read
do
case "${class}" in
"*" ) continue ;;
"?" )
cat <<EOF
int
${function}_event_p (${formal})
{
return current_event_hooks->${function};
}
${returntype}
${function}_event (${formal})
{
return current_events->${function} (${actual});
}
EOF
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;;
"f" )
cat <<EOF
void
${function}_event (${formal})
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "${function}_event\n");
if (!current_event_hooks->${function})
return;
current_event_hooks->${function} (${actual});
}
EOF
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;;
esac
done
echo ""
echo "#endif"
# Set hooks function
echo ""
cat <<EOF
#if WITH_GDB_EVENTS
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struct gdb_events *
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set_gdb_event_hooks (struct gdb_events *vector)
{
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struct gdb_events *old_events = current_event_hooks;
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if (vector == NULL)
current_event_hooks = &queue_event_hooks;
else
current_event_hooks = vector;
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return old_events;
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EOF
function_list | while eval read $read
do
case "${class}" in
"*" )
echo " ${function}_event = hooks->${function};"
;;
esac
done
cat <<EOF
}
#endif
EOF
# Clear hooks function
echo ""
cat <<EOF
#if WITH_GDB_EVENTS
void
clear_gdb_event_hooks (void)
{
set_gdb_event_hooks (&null_event_hooks);
}
#endif
EOF
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# event type
echo ""
cat <<EOF
enum gdb_event
{
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EOF
function_list | while eval read $read
do
case "${class}" in
"f" )
echo " ${function},"
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;;
esac
done
cat <<EOF
nr_gdb_events
};
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EOF
# event data
echo ""
function_list | while eval read $read
do
case "${class}" in
"f" )
if test ${actual}
then
echo "struct ${function}"
echo " {"
echo " `echo ${formal} | tr '[,]' '[;]'`;"
echo " };"
echo ""
fi
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;;
esac
done
# event queue
cat <<EOF
struct event
{
enum gdb_event type;
struct event *next;
union
{
EOF
function_list | while eval read $read
do
case "${class}" in
"f" )
if test ${actual}
then
echo " struct ${function} ${function};"
fi
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;;
esac
done
cat <<EOF
}
data;
};
struct event *pending_events;
struct event *delivering_events;
EOF
# append
echo ""
cat <<EOF
static void
append (struct event *new_event)
{
struct event **event = &pending_events;
while ((*event) != NULL)
event = &((*event)->next);
(*event) = new_event;
(*event)->next = NULL;
}
EOF
# schedule a given event
function_list | while eval read $read
do
case "${class}" in
"f" )
echo ""
echo "static void"
echo "queue_${function} (${formal})"
echo "{"
echo " struct event *event = XMALLOC (struct event);"
echo " event->type = ${function};"
for arg in `echo ${actual} | tr '[,]' '[:]' | tr -d '[ ]'`; do
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echo " event->data.${function}.${arg} = ${arg};"
done
echo " append (event);"
echo "}"
;;
esac
done
# deliver
echo ""
cat <<EOF
void
gdb_events_deliver (struct gdb_events *vector)
{
/* Just zap any events left around from last time. */
while (delivering_events != NULL)
{
struct event *event = delivering_events;
delivering_events = event->next;
xfree (event);
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}
/* Process any pending events. Because one of the deliveries could
bail out we move everything off of the pending queue onto an
in-progress queue where it can, later, be cleaned up if
necessary. */
delivering_events = pending_events;
pending_events = NULL;
while (delivering_events != NULL)
{
struct event *event = delivering_events;
switch (event->type)
{
EOF
function_list | while eval read $read
do
case "${class}" in
"f" )
echo " case ${function}:"
if test ${actual}
then
echo " vector->${function}"
sep=" ("
ass=""
for arg in `echo ${actual} | tr '[,]' '[:]' | tr -d '[ ]'`; do
ass="${ass}${sep}event->data.${function}.${arg}"
sep=",
"
done
echo "${ass});"
else
echo " vector->${function} ();"
fi
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echo " break;"
;;
esac
done
cat <<EOF
}
delivering_events = event->next;
xfree (event);
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}
}
EOF
# Finally the initialization
echo ""
cat <<EOF
void _initialize_gdb_events (void);
void
_initialize_gdb_events (void)
{
struct cmd_list_element *c;
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#if WITH_GDB_EVENTS
EOF
function_list | while eval read $read
do
case "${class}" in
"f" )
echo " queue_event_hooks.${function} = queue_${function};"
;;
esac
done
cat <<EOF
#endif
c = add_set_cmd ("eventdebug", class_maintenance, var_zinteger,
(char *) (&gdb_events_debug), "Set event debugging.\n\\
When non-zero, event/notify debugging is enabled.", &setlist);
deprecate_cmd (c, "set debug event");
deprecate_cmd (add_show_from_set (c, &showlist), "show debug event");
add_show_from_set (add_set_cmd ("event",
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class_maintenance,
var_zinteger,
(char *) (&gdb_events_debug),
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"Set event debugging.\n\\
When non-zero, event/notify debugging is enabled.", &setdebuglist),
&showdebuglist);
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}
EOF
# close things off
exec 1>&2
#../move-if-change new-gdb-events.c gdb-events.c
# Replace any leading spaces with tabs
sed < new-gdb-events.c > tmp-gdb-events.c \
-e 's/\( \)* /\1 /g'
mv tmp-gdb-events.c new-gdb-events.c
# Move if changed?
if test -r gdb-events.c
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then
diff -c gdb-events.c new-gdb-events.c
if [ $? = 1 ]
then
echo "gdb-events.c changed? cp new-gdb-events.c gdb-events.c" 1>&2
fi
else
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echo "File missing? mv new-gdb-events.c gdb-events.c" 1>&2
fi