[PATCH 1/3] catch syscall -- try 5 -- Source code modifications

[Sérgio Durigan Júnior]

Hi Eli,

On Sat, 2009-04-25 at 12:26 +0300, Eli Zaretskii wrote:
> > From: =?ISO-8859-1?Q?S=E9rgio?= Durigan =?ISO-8859-1?Q?J=FAnior?= <sergiodj@linux.vnet.ibm.com>
> > Date: Wed, 22 Apr 2009 21:33:03 -0300

Thanks for the comments.  Here goes the new version.

Regards,

-- 
Sérgio Durigan Júnior
Linux on Power Toolchain - Software Engineer
Linux Technology Center - LTC
IBM Brazil

gdb/ChangeLog:

2009-04-26  Sergio Durigan Junior <sergiodj@linux.vnet.ibm.com>

	* breakpoint.c: New include: xml-syscall.h.
	(set_raw_breakpoint_without_location): Setting the parameters
	for the catch syscall feature.
	(any_syscall_count, syscalls_counts)
	(total_syscalls_count): New variables to keep track of requested
	syscall catchpoints.
	(insert_catch_syscall): New.
	(remove_catch_syscall): New.
	(breakpoint_hit_catch_syscall): New.
	(print_it_catch_syscall): New.
	(print_one_catch_syscall): New.
	(print_mention_catch_syscall): New.
	(catch_syscall_breakpoint_ops): New.
	(syscall_catchpoint_p): New.
	(create_catchpoint_without_mention): New.
	(create_catchpoint): Modified in order to use
	create_catchpoint_without_mention.
	(create_syscall_event_catchpoint): New.
	(clean_up_filters): New.
	(catch_syscall_split_args): New.
	(catch_syscall_command_1): New.
	(delete_breakpoint): Add cleanup for catch syscall.
	(is_syscall_catchpoint_enabled): New.
	(catch_syscall_enabled): New.
	(catching_syscall_number): New.
	(catch_syscall_completer): New completer function.
	(add_catch_command): Add the completer function for catchpoints.
	* breakpoint.h (syscalls_to_be_caught): New vector.
	(catch_syscall_enabled): New.
	(catching_syscall_number): New.
	* gdbarch.c: Regenerated.
	* gdbarch.h: Regenerated.
	* gdbarch.sh: Add syscall catchpoint functions and structures.
	(get_syscall_number): New.
	(UNKNOWN_SYSCALL): New definition.
	* i386-linux-nat.c (i386_linux_resume): Select the proper request
	to be made for ptrace() considering if we are catching syscalls
	or not.
	* i386-linux-tdep.c: Include xml-syscall.h header, define the XML
	syscall name for the architecture.
	(i386_linux_get_syscall_number): New.
	(i386_linux_init_abi): Register the correct functions for syscall
	catchpoint; set the correct syscall file name.
	* inf-child.c (inf_child_set_syscall_catchpoint): New.
	(inf_child_target): Assign default values to target_ops.
	* inf-ptrace.c (inf_ptrace_resume): Select the proper request
	to be made for ptrace() considering if we are catching syscalls
	or not.
	* infrun.c (resume): Add syscall catchpoint.
	(deal_with_syscall_event): New.
	(handle_inferior_event): Add syscall entry/return events.
	(inferior_has_called_syscall): New.
	* linux-nat.c: Define some helpful variables to track wether we have
	support for the needed ptrace option.
	(linux_target_install_ops): Setting the default methods.
	(linux_test_for_tracesysgood): New.
	(linux_supports_tracesysgood): New.
	(linux_enable_tracesysgood): New.
	(linux_enable_event_reporting): Save the current used ptrace
	options.
	(linux_child_post_attach): Calling linux_enable_tracesysgood.
	(linux_child_post_startup_inferior): Likewise.
	(linux_child_set_syscall_catchpoint): New function.
	(linux_handle_extended_wait): Handle the case which the inferior stops
	because it has called or returned from a syscall.
	(linux_target_install_ops): Install the necessary functions to handle
	syscall catchpoints.
	* linux-nat.h (struct lwp_info): Include syscall_state into the
	structure, which indicates if we are in a syscall entry or return.
	* ppc-linux-tdep.c: Include xml-syscall.h header, define the XML
	syscall filename for the arch.
	(ppc_linux_get_syscall_number): New.
	(ppc_linux_init_abi): Register the correct functions for syscall
	catchpoint; setting the correct name for the XML syscall file.
	* target.c (update_current_target): Update/copy functions related to
	syscall catchpoint.
	(target_waitstatus_to_string): Add syscall catchpoint entry/return
	events.
	* target.h (struct target_waitstatus): Add syscall number.
	(struct syscall): New struct to hold information about syscalls
	in the system.
	(struct target_ops): Add ops for syscall catchpoint.
	(inferior_has_called_syscall): New.
	(target_set_syscall_catchpoint): New.
	* xml-support.c (xml_fetch_content_from_file): New function,
	transferred from xml-tdesc.c.
	* xml-support.h (xml_fetch_content_from_file): New.
	* xml-tdesc.c (fetch_xml_from_file): Function removed;
	transferred to xml-support.c.
	(file_read_description_xml): Updated to use the new
	xml_fetch_content_from_file function.

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