This is the architecture dependent part of the patch. It adds support
for PPC, PPC64 and i386 archs.

Regards,

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

gdb/ChangeLog

2008-11-04  Sergio Durigan Junior  <sergiodj@linux.vnet.ibm.com>

	* 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: Define the syscall's XML struct to hold
	information about syscalls.
	(init_sysinfo): New.
	(i386_linux_get_syscall_number): New.
	(i386_linux_syscall_name_from_number): New.
	(i386_linux_syscall_number_from_name): New.
	(i386_linux_get_syscalls_names): New.
	(i386_linux_init_abi): Register the correct functions for
	syscall catchpoint.
	* linux-nat.c: Define some helpful variables to track wether we have
	support for the needed ptrace() option.
	(linux_test_for_tracesysgood): New.
	(linux_supports_tracesysgood): New.
	(linux_enable_tracesysgood): New.
	(linux_passed_by_entrypoint): New.
	(linux_enable_event_reporting): Save the current used ptrace()
	options.
	(linux_child_post_startup_inferior): Create the entry breakpoint.
	(linux_child_insert_syscall_catchpoint): New.
	(linux_child_remove_syscall_catchpoint): New.
	(linux_nat_create_inferior): Properly set the flag which indicates
	if the inferior have already passed through its entrypoint.
	(linux_handle_extended_wait): Handle the case which the inferior stops
	because it has called or returned from a syscall.
	(linux_nat_filter_event): Likewise.
	(linux_target_install_ops): Install the necessary functions to handle
	syscall catchpoints and entry breakpoints.
	* ppc-linux-tdep.c: Define the syscall's XML struct to hold
	information about syscalls.
	(ppc_linux_get_syscall_number): New.
	(init_sysinfo): New.
	(ppc_linux_syscall_name_from_number): New.
	(ppc_linux_syscall_number_from_name): New.
	(ppc_linux_get_syscalls_names): New.
	(ppc_linux_init_abi): Register the correct functions for
	syscall catchpoint.