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target: allow decr_pc_after_break to be defined by the target

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Allow the target to define which value to use in decr_pc_after_break.
It defaults to gdbarch_decr_pc_after_break (GDBARCH).

2014-01-16  Markus Metzger  <markus.t.metzger@intel.com>

	* target.h (struct target_ops) <to_decr_pc_after_break>: New.
	(forward_target_decr_pc_after_break)
	(target_decr_pc_after_break): New.
	* target.c (forward_target_decr_pc_after_break)
	(target_decr_pc_after_break): New.
	* aix-thread.c (aix_thread_wait): Call target_decr_pc_after_break
	instead of gdbarch_decr_pc_after_break.
	* darwin-nat.c (cancel_breakpoint): Call target_decr_pc_after_break
	instead of gdbarch_decr_pc_after_break.
	* infrun.c (adjust_pc_after_break): Call target_decr_pc_after_break
	instead of gdbarch_decr_pc_after_break.
	* linux-nat.c (cancel_breakpoint): Call target_decr_pc_after_break
	instead of gdbarch_decr_pc_after_break.
	* linux-thread-db.c (check_event): Call target_decr_pc_after_break
	instead of gdbarch_decr_pc_after_break.
	* record-full.c (record_full_wait_1): Call target_decr_pc_after_break
	instead of gdbarch_decr_pc_after_break.
This commit is contained in:
Markus Metzger
2013-12-18 11:09:34 +01:00
parent 6e07b1d27e
commit 118e6252ca
9 changed files with 68 additions and 13 deletions
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9
gdb/infrun.c
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@@ -2963,7 +2963,7 @@ adjust_pc_after_break (struct execution_control_state *ecs)
struct regcache *regcache;
struct gdbarch *gdbarch;
struct address_space *aspace;
CORE_ADDR breakpoint_pc;
CORE_ADDR breakpoint_pc, decr_pc;
/* If we've hit a breakpoint, we'll normally be stopped with SIGTRAP. If
we aren't, just return.
@@ -3025,15 +3025,16 @@ adjust_pc_after_break (struct execution_control_state *ecs)
we have nothing to do. */
regcache = get_thread_regcache (ecs->ptid);
gdbarch = get_regcache_arch (regcache);
if (gdbarch_decr_pc_after_break (gdbarch) == 0)
decr_pc = target_decr_pc_after_break (gdbarch);
if (decr_pc == 0)
return;
aspace = get_regcache_aspace (regcache);
/* Find the location where (if we've hit a breakpoint) the
breakpoint would be. */
breakpoint_pc = regcache_read_pc (regcache)
- gdbarch_decr_pc_after_break (gdbarch);
breakpoint_pc = regcache_read_pc (regcache) - decr_pc;
/* Check whether there actually is a software breakpoint inserted at
that location.