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Introduce basic LWP accessors

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This commit introduces three accessors that shared Linux code can
use to access fields of struct lwp_info.  The GDB and gdbserver
Linux x86 code is modified to use them.

gdb/ChangeLog:

	* nat/linux-nat.h (ptid_of_lwp): New declaration.
	(lwp_is_stopped): Likewise.
	(lwp_stop_reason): Likewise.
	* linux-nat.c (ptid_of_lwp): New function.
	(lwp_is_stopped): Likewise.
	(lwp_is_stopped_by_watchpoint): Likewise.
	* x86-linux-nat.c (update_debug_registers_callback):
	Use lwp_is_stopped.
	(x86_linux_prepare_to_resume): Use ptid_of_lwp and
	lwp_stop_reason.

gdb/gdbserver/ChangeLog:

	* linux-low.c (ptid_of_lwp): New function.
	(lwp_is_stopped): Likewise.
	(lwp_stop_reason): Likewise.
	* linux-x86-low.c (update_debug_registers_callback):
	Use lwp_is_stopped.
	(x86_linux_prepare_to_resume): Use ptid_of_lwp and
	lwp_stop_reason.
This commit is contained in:
Gary Benson
2015-03-24 14:05:44 +00:00
parent b2f7c7e8b7
commit cff068da9d
7 changed files with 103 additions and 10 deletions
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27
gdb/linux-nat.c
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@@ -281,6 +281,33 @@ static int check_stopped_by_breakpoint (struct lwp_info *lp);
static int sigtrap_is_event (int status);
static int (*linux_nat_status_is_event) (int status) = sigtrap_is_event;
/* LWP accessors. */
/* See nat/linux-nat.h. */
ptid_t
ptid_of_lwp (struct lwp_info *lwp)
{
return lwp->ptid;
}
/* See nat/linux-nat.h. */
int
lwp_is_stopped (struct lwp_info *lwp)
{
return lwp->stopped;
}
/* See nat/linux-nat.h. */
enum target_stop_reason
lwp_stop_reason (struct lwp_info *lwp)
{
return lwp->stop_reason;
}
/* Trivial list manipulation functions to keep track of a list of
new stopped processes. */