add "this" pointers to more target APIs

A subsequent pass introduces delegation helper functions to the target
API.  This delegation is much cleaner if the target_ops pointer is
directly available at delegation time.

This patch adds the "this" pointer to various to_* methods for this
purpose.

This updates a number of ports which I am unable to test.  Please give
them a look-over.  Any possible problem here is trivial, though, as
all that is required is adding an argument to a function.

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* aarch64-linux-nat.c (aarch64_linux_stopped_by_watchpoint):
	Add 'ops' argument.
	* arm-linux-nat.c (arm_linux_stopped_by_watchpoint): Add
	'ops' argument.
	* corelow.c (ignore): Add 'ops' argument.
	* exec.c (ignore): Add 'ops' argument.
	* i386-nat.c (i386_stopped_by_watchpoint): Add 'ops' argument.
	* ia64-linux-nat.c (ia64_linux_stopped_by_watchpoint): Add
	'ops' argument.
	* inf-ttrace.c (inf_ttrace_stopped_by_watchpoint): Add 'ops'
	argument.
	* linux-nat.c (save_sigtrap): Update.
	(linux_nat_stopped_by_watchpoint, linux_nat_is_async_p)
	(linux_nat_can_async_p, linux_nat_async): Add 'ops' argument.
	(linux_nat_close): Update.
	* mem-break.c (memory_insert_breakpoint, memory_remove_breakpoint):
	Add 'ops' argument.
	* mips-linux-nat.c (mips_linux_stopped_by_watchpoint): Add 'ops'
	argument.
	* monitor.c (monitor_insert_breakpoint, monitor_remove_breakpoint):
	Add 'ops' argument.
	* nto-procfs.c (procfs_insert_breakpoint, procfs_remove_breakpoint)
	(procfs_stopped_by_watchpoint): Add 'ops' argument.
	* ppc-linux-nat.c (ppc_linux_stopped_by_watchpoint): Add 'ops'
	argument.
	* procfs.c (procfs_stopped_by_watchpoint): Add 'ops' argument.
	* record-full.c (record_full_beneath_to_insert_breakpoint)
	(record_full_beneath_to_remove_breakpoint)
	(record_full_beneath_to_stopped_by_watchpoint)
	(record_full_beneath_to_async, tmp_to_insert_breakpoint)
	(tmp_to_remove_breakpoint, tmp_to_stopped_by_watchpoint)
	(tmp_to_async): Add 'ops' argument.
	(record_full_stopped_by_watchpoint, record_full_insert_breakpoint)
	(record_full_remove_breakpoint, record_full_async)
	(record_full_can_async_p, record_full_is_async_p)
	(record_full_core_insert_breakpoint)
	(record_full_core_remove_breakpoint): Add 'ops' argument.
	* remote-m32r-sdi.c (m32r_insert_breakpoint, m32r_remove_breakpoint)
	(m32r_stopped_by_watchpoint): Add 'ops' argument.
	* remote-mips.c (mips_insert_breakpoint, mips_remove_breakpoint)
	(mips_stopped_by_watchpoint): Add 'ops' argument.
	* remote.c (remote_insert_breakpoint, remote_remove_breakpoint)
	(remote_stopped_by_watchpoint_p, remote_can_async_p)
	(remote_is_async_p, remote_async): Add 'ops' argument.
	* s390-nat.c (s390_stopped_by_watchpoint): Add 'ops' argument.
	* target.c (update_current_target)
	(target_insert_breakpoint, target_remove_breakpoint)
	(find_default_can_async_p, find_default_is_async_p): Update.
	(init_dummy_target): Update.
	(debug_to_insert_breakpoint, debug_to_remove_breakpoint)
	(debug_to_stopped_by_watchpoint): Add 'ops' argument.
	* target.h (struct target_ops) <to_insert_breakpoint,
	to_remove_breakpoint, to_stopped_by_watchpoint, to_can_async_p,
	to_is_async_p, to_async>: Add 'ops' argument.
	(target_can_async_p, target_is_async_p, target_async)
	(target_stopped_by_watchpoint): Update.
	(memory_remove_breakpoint, memory_insert_breakpoint): Add 'ops'
	argument.
introduce and use find_target_at

RECORD_IS_USED looks at current_target.to_stratum to determine whether
a record target is in use.  This is bad because arch_stratum is
greater than record_stratum.

To fix this, this patch adds find_target_at to determine whether a
target appears at a given stratum.  This may seem like overkill
somehow, but I have a subsequent patch series that uses it more
heavily.

This new function lets us clean up find_record_target a bit as well.

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* record.c (find_record_target): Use find_target_at.
	* record.h (RECORD_IS_REPLAY): Use find_target_at.
	* target.c (find_target_at): New function.
	* target.h (find_target_at): Declare.
introduce async_callback_ftype

This introduces async_callback_ftype.  This is needed for
make-target-delegates to work properly, as it doesn't implement a real
parser.  I think it's also an ok cleanup in its own right.

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (async_callback_ftype): New typedef.
	(struct target_ops) <to_async>: Use it.
add make-target-delegates

This patch adds a new script, call make-target-delegates, which
auto-generates some target delegation code based on annotations in
target.h.  This adds the new delegation macros, the new generated
file, and adds the necessary calls to the new generated functions to
target.c.  It doesn't, however, add any actual annotations to the
target methods, leaving these for separate patches.

2014-01-08  Tom Tromey  <tromey@redhat.com>

	PR build/7701:
	* target-delegates.c: New file.
	* target.c: Include target-delegates.c.
	(init_dummy_target): Call install_dummy_methods.
	(complete_target_initialization): Call install_delegators.
	* target.h (TARGET_DEFAULT_IGNORE, TARGET_DEFAULT_NORETURN)
	(TARGET_DEFAULT_RETURN, TARGET_DEFAULT_FUNC): New defines.
	* make-target-delegates: New file.
add target method delegation

This patch replaces some code in the record targets with target method
delegation.

record-full.c stores pointers to many target methods when the record
target is pushed.  Then it later delegates some calls via these.  This
is wrong because it violates the target stack contract.  In particular
it is ok to unpush a target at any stratum, but record-full does not
keep track of this, so it could potentially call into an unpushed
target.

This patch fixes the problem by using the newly-introduced generic
approach to target delegation for the methods in question.

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* record-full.c (record_full_beneath_to_resume_ops)
	(record_full_beneath_to_resume, record_full_beneath_to_wait_ops)
	(record_full_beneath_to_wait)
	(record_full_beneath_to_store_registers_ops)
	(record_full_beneath_to_store_registers)
	(record_full_beneath_to_xfer_partial_ops)
	(record_full_beneath_to_xfer_partial)
	(record_full_beneath_to_insert_breakpoint)
	(record_full_beneath_to_remove_breakpoint)
	(record_full_beneath_to_stopped_by_watchpoint)
	(record_full_beneath_to_stopped_data_address)
	(record_full_beneath_to_async, tmp_to_resume_ops, tmp_to_resume)
	(tmp_to_wait_ops, tmp_to_wait, tmp_to_store_registers_ops)
	(tmp_to_store_registers, tmp_to_xfer_partial_ops)
	(tmp_to_xfer_partial, tmp_to_insert_breakpoint)
	(tmp_to_remove_breakpoint, tmp_to_stopped_by_watchpoint)
	(tmp_to_stopped_data_address, tmp_to_async): Remove.
	(record_full_open_1, record_full_open): Update.  Use RECORD_IS_USED.
	(record_full_resume, record_full_wait_1)
	(record_full_stopped_by_watchpoint, record_full_stopped_data_address)
	(record_full_store_registers, record_full_xfer_partial)
	(record_full_insert_breakpoint, record_full_remove_breakpoint)
	(record_full_async, record_full_can_async_p, record_full_is_async_p)
	(record_full_core_xfer_partial): Use target delegation.
	* target-delegates.c: Rebuild.
	* target.c (current_xfer_partial): Remove.
	(update_current_target): Do not INHERIT or de_fault
	to_insert_breakpoint, to_remove_breakpoint,
	to_stopped_data_address, to_stopped_by_watchpoint, to_can_async_p,
	to_is_async_p, to_async.  Do not set to_xfer_partial field.
	(default_xfer_partial): Simplify.
	(current_xfer_partial): Remove.
	(target_wait, target_resume): Simplify.
	(find_default_can_async_p, find_default_is_async_p): Update.
	(init_dummy_target): Don't set to_can_async_p, to_is_async_p,
	to_xfer_partial, to_stopped_by_watchpoint,
	to_stopped_data_address.
	(target_store_registers): Simplify.
	* target.h (struct target_ops) <to_resume, to_wait,
	to_store_registers, to_insert_breakpoint, to_remove_breakpoint,
	to_stopped_by_watchpoint, to_stopped_data_address, to_can_async_p,
	to_is_async_p, to_async, to_xfer_partial>: Add TARGET_DEFAULT
	markup.
convert to_supports_btrace

This adds a "self" argument to to_supports_btrace.  Due to how one
implementation of this method is shared with gdbserver this required a
small change to gdbserver as well.

2014-01-15  Tom Tromey  <tromey@redhat.com>

	* common/linux-btrace.c (linux_supports_btrace): Add "ops"
	argument.
	* common/linux-btrace.h (linux_supports_btrace): Update.
	* remote.c (remote_supports_btrace): Add "self" argument.
	* target-delegates.c: Rebuild.
	* target.c (target_supports_btrace): Remove.
	* target.h (struct target_ops) <to_supports_btrace>: Add
	target_ops argument.
	(target_supports_btrace): New define.

2014-01-15  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <supports_btrace>: Add target_ops
	argument.
	(target_supports_btrace): Update.
introduce remote_load

I used a refactoring script to add target_ops arguments to all the
target methods.  In order to make this script work a little better,
this patch adds a new "remote_load" function; this eliminates the need
to later change the signature of generic_load.

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* remote.c (remote_load): New function.
	(init_remote_ops): Use it.
remove extended_remote_create_inferior_1

I noticed that extended_remote_create_inferior_1 is called from a
single spot.  This patch unifies the callee and caller.  It's just a
simple cleanup that made the coming refactoring simpler.

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* remote.c (extended_remote_create_inferior): Rename from
	extended_remote_create_inferior_1.  Add "ops" argument.  Remove
	old implementation.
Add target_ops argument to to_close

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* windows-nat.c (windows_close): Add 'self' argument.
	* tracepoint.c (tfile_close): Add 'self' argument.
	* target.h (struct target_ops) <to_close>: Add argument.
	* target.c (target_close): Add argument.
	(update_current_target): Update.
	* remote.c (remote_close): Add 'self' argument.
	* remote-sim.c (gdbsim_close): Add 'self' argument.
	* remote-mips.c (mips_close): Add 'self' argument.
	* remote-m32r-sdi.c (m32r_close): Add 'self' argument.
	* record-full.c (record_full_close): Add 'self' argument.
	* record-btrace.c (record_btrace_close): Add 'self' argument.
	* monitor.h (monitor_close): Add 'self' argument.
	* monitor.c (monitor_close): Add 'self' argument.
	* mips-linux-nat.c (mips_linux_close): Add 'self' argument.
	* linux-nat.c (linux_nat_close): Add argument.
	* go32-nat.c (go32_close): Add 'self' argument.
	* exec.c (exec_close_1): Add 'self' argument.
	* ctf.c (ctf_close): Add 'self' argument.
	* corelow.c (core_close): Add 'self' argument.
	(core_close_cleanup): Update.
	* bsd-uthread.c (bsd_uthread_close): Add 'self' argument.
	* bsd-kvm.c (bsd_kvm_close): Add 'self' argument.
Add target_ops argument to to_post_attach

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_post_attach>: Add argument.
	(target_post_attach): Add argument.
	* target.c (debug_to_post_attach): Add argument.
	(update_current_target): Update.
	* spu-linux-nat.c (spu_child_post_attach): Add 'self' argument.
	* nto-procfs.c (procfs_post_attach): Add 'self' argument.
	* linux-nat.c (linux_child_post_attach): Add 'self' argument.
	* inf-ptrace.c (inf_ptrace_post_attach): Add 'self' argument.
	* inf-child.c (inf_child_post_attach): Add 'self' argument.
Add target_ops argument to to_prepare_to_store

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* windows-nat.c (windows_prepare_to_store): Add 'self' argument.
	* target.h (struct target_ops) <to_prepare_to_store>: Add
	argument.
	(target_prepare_to_store): Add argument.
	* target.c (debug_to_prepare_to_store): Add argument.
	(update_current_target): Update.
	* remote.c (remote_prepare_to_store): Add 'self' argument.
	* remote-sim.c (gdbsim_prepare_to_store): Add 'self' argument.
	* remote-mips.c (mips_prepare_to_store): Add 'self' argument.
	* remote-m32r-sdi.c (m32r_prepare_to_store): Add 'self' argument.
	* record-full.c (record_full_core_prepare_to_store): Add 'self'
	argument.
	* ravenscar-thread.c (ravenscar_prepare_to_store): Add argument.
	* nto-procfs.c (procfs_prepare_to_store): Add 'self' argument.
	* monitor.c (monitor_prepare_to_store): Add 'self' argument.
	* inf-child.c (inf_child_prepare_to_store): Add 'self' argument.
	* go32-nat.c (go32_prepare_to_store): Add 'self' argument.
Add target_ops argument to to_can_use_hw_breakpoint

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_can_use_hw_breakpoint>: Add
	argument.
	(target_can_use_hardware_watchpoint): Add argument.
	* target.c (debug_to_can_use_hw_breakpoint): Add argument.
	(update_current_target): Update.
	* spu-linux-nat.c (spu_can_use_hw_breakpoint): Add 'self'
	argument.
	* s390-linux-nat.c (s390_can_use_hw_breakpoint): Add 'self'
	argument.
	* remote.c (remote_check_watch_resources): Add 'self' argument.
	* remote-mips.c (mips_can_use_watchpoint): Add 'self' argument.
	* remote-m32r-sdi.c (m32r_can_use_hw_watchpoint): Add 'self'
	argument.
	* procfs.c (procfs_can_use_hw_breakpoint): Add 'self' argument.
	* ppc-linux-nat.c (ppc_linux_can_use_hw_breakpoint): Add 'self'
	argument.
	* nto-procfs.c (procfs_can_use_hw_breakpoint): Add 'self'
	argument.
	* mips-linux-nat.c (mips_linux_can_use_hw_breakpoint): Add 'self'
	argument.
	* inf-ttrace.c (inf_ttrace_can_use_hw_breakpoint): Add 'self'
	argument.
	* ia64-linux-nat.c (ia64_linux_can_use_hw_breakpoint): Add 'self'
	argument.
	* ia64-hpux-nat.c (ia64_hpux_can_use_hw_breakpoint): Add 'self'
	argument.
	* i386-nat.c (i386_can_use_hw_breakpoint): Add 'self' argument.
	* arm-linux-nat.c (arm_linux_can_use_hw_breakpoint): Add 'self'
	argument.
	* aarch64-linux-nat.c (aarch64_linux_can_use_hw_breakpoint): Add
	'self' argument.
Add target_ops argument to to_insert_hw_breakpoint

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_insert_hw_breakpoint>: Add
	argument.
	(target_insert_hw_breakpoint): Add argument.
	* target.c (debug_to_insert_hw_breakpoint): Add argument.
	(update_current_target): Update.
	* remote.c (remote_insert_hw_breakpoint): Add 'self' argument.
	* ppc-linux-nat.c (ppc_linux_insert_hw_breakpoint): Add 'self'
	argument.
	* nto-procfs.c (procfs_insert_hw_breakpoint): Add 'self' argument.
	* i386-nat.c (i386_insert_hw_breakpoint): Add 'self' argument.
	* arm-linux-nat.c (arm_linux_insert_hw_breakpoint): Add 'self'
	argument.
	* aarch64-linux-nat.c (aarch64_linux_insert_hw_breakpoint): Add
	'self' argument.
Add target_ops argument to to_remove_hw_breakpoint

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_remove_hw_breakpoint>: Add
	argument.
	(target_remove_hw_breakpoint): Add argument.
	* target.c (debug_to_remove_hw_breakpoint): Add argument.
	(update_current_target): Update.
	* remote.c (remote_remove_hw_breakpoint): Add 'self' argument.
	* ppc-linux-nat.c (ppc_linux_remove_hw_breakpoint): Add 'self'
	argument.
	* nto-procfs.c (procfs_remove_breakpoint): Add 'self' argument.
	* i386-nat.c (i386_remove_hw_breakpoint): Add 'self' argument.
	* arm-linux-nat.c (arm_linux_remove_hw_breakpoint): Add 'self'
	argument.
	* aarch64-linux-nat.c (aarch64_linux_remove_hw_breakpoint): Add
	'self' argument.
Add target_ops argument to to_remove_watchpoint

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_remove_watchpoint>: Add
	argument.
	(target_remove_watchpoint): Add argument.
	* target.c (debug_to_remove_watchpoint): Add argument.
	(update_current_target): Update.
	* s390-linux-nat.c (s390_remove_watchpoint): Add 'self' argument.
	* remote.c (remote_remove_watchpoint): Add 'self' argument.
	* remote-mips.c (mips_remove_watchpoint): Add 'self' argument.
	* remote-m32r-sdi.c (m32r_remove_watchpoint): Add 'self' argument.
	* procfs.c (procfs_remove_watchpoint): Add 'self' argument.
	* ppc-linux-nat.c (ppc_linux_remove_watchpoint): Add 'self'
	argument.
	* nto-procfs.c (procfs_remove_hw_watchpoint): Add 'self' argument.
	* mips-linux-nat.c (mips_linux_remove_watchpoint): Add 'self'
	argument.
	* inf-ttrace.c (inf_ttrace_remove_watchpoint): Add 'self'
	argument.
	* ia64-linux-nat.c (ia64_linux_remove_watchpoint): Add 'self'
	argument.
	* i386-nat.c (i386_remove_watchpoint): Add 'self' argument.
	* arm-linux-nat.c (arm_linux_remove_watchpoint): Add 'self'
	argument.
	* aarch64-linux-nat.c (aarch64_linux_remove_watchpoint): Add
	'self' argument.
Add target_ops argument to to_insert_watchpoint

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_insert_watchpoint>: Add
	argument.
	(target_insert_watchpoint): Add argument.
	* target.c (debug_to_insert_watchpoint): Add argument.
	(update_current_target): Update.
	* s390-linux-nat.c (s390_insert_watchpoint): Add 'self' argument.
	* remote.c (remote_insert_watchpoint): Add 'self' argument.
	* remote-mips.c (mips_insert_watchpoint): Add 'self' argument.
	* remote-m32r-sdi.c (m32r_insert_watchpoint): Add 'self' argument.
	* procfs.c (procfs_insert_watchpoint): Add 'self' argument.
	* ppc-linux-nat.c (ppc_linux_insert_watchpoint): Add 'self'
	argument.
	* nto-procfs.c (procfs_insert_hw_watchpoint): Add 'self' argument.
	(procfs_insert_hw_watchpoint): Add 'self' argument.
	* mips-linux-nat.c (mips_linux_insert_watchpoint): Add 'self'
	argument.
	* inf-ttrace.c (inf_ttrace_insert_watchpoint): Add 'self'
	argument.
	* ia64-linux-nat.c (ia64_linux_insert_watchpoint): Add 'self'
	argument.
	* i386-nat.c (i386_insert_watchpoint): Add 'self' argument.
	* arm-linux-nat.c (arm_linux_insert_watchpoint): Add 'self'
	argument.
	* aarch64-linux-nat.c (aarch64_linux_insert_watchpoint): Add
	'self' argument.
Add target_ops argument to to_region_ok_for_hw_watchpoint

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_region_ok_for_hw_watchpoint>:
	Add argument.
	(target_region_ok_for_hw_watchpoint): Add argument.
	* target.c (debug_to_region_ok_for_hw_watchpoint): Add argument.
	(default_region_ok_for_hw_watchpoint): Add argument.
	* spu-multiarch.c (spu_region_ok_for_hw_watchpoint): Add argument.
	* s390-linux-nat.c (s390_region_ok_for_hw_watchpoint): Add 'self'
	argument.
	* remote.c (remote_region_ok_for_hw_watchpoint): Add 'self'
	argument.
	* procfs.c (procfs_region_ok_for_hw_watchpoint): Add 'self'
	argument.
	* ppc-linux-nat.c (ppc_linux_region_ok_for_hw_watchpoint): Add
	'self' argument.
	* mips-linux-nat.c (mips_linux_region_ok_for_hw_watchpoint): Add
	'self' argument.
	* inf-ttrace.c (inf_ttrace_region_ok_for_hw_watchpoint): Add
	'self' argument.
	* i386-nat.c (i386_region_ok_for_watchpoint): Add 'self' argument.
	* arm-linux-nat.c (arm_linux_region_ok_for_hw_watchpoint): Add
	'self' argument.
	* aarch64-linux-nat.c (aarch64_linux_region_ok_for_hw_watchpoint):
	Add 'self' argument.
Add target_ops argument to to_can_accel_watchpoint_condition

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops)
	<to_can_accel_watchpoint_condition>: Add argument.
	(target_can_accel_watchpoint_condition): Add argument.
	* target.c (debug_to_can_accel_watchpoint_condition): Add
	argument.
	(update_current_target): Update.
	* ppc-linux-nat.c (ppc_linux_can_accel_watchpoint_condition): Add
	'self' argument.
Add target_ops argument to to_terminal_init

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_terminal_init>: Add argument.
	(target_terminal_init): Add argument.
	* target.c (debug_to_terminal_init): Add argument.
	(update_current_target): Update.
	* inflow.c (terminal_init_inferior): Add 'self' argument.
	* inferior.h (terminal_init_inferior): Add 'self' argument.
	* go32-nat.c (go32_terminal_init): Add 'self' argument.
	* gnu-nat.c (gnu_terminal_init_inferior): Add 'self' argument.
Add target_ops argument to to_terminal_inferior

2014-01-08  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_terminal_inferior>: Add
	argument.
	* target.c (target_terminal_inferior): Add argument.
	(update_current_target): Update.
	* remote.c (remote_terminal_inferior): Add 'self' argument.
	* linux-nat.c (linux_nat_terminal_inferior): Add 'self' argument.
	* inflow.c (terminal_inferior): Add 'self' argument.
	* inferior.h (terminal_inferior): Add 'self' argument.
	* go32-nat.c (go32_terminal_inferior): Add 'self' argument.
	(go32_terminal_inferior): Add 'self' argument.