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binutils-gdb
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Author SHA1 Message Date
Markus Metzger a950d57c9f LBR, BTM, or BTS records may have incorrect branch "from" information afer an 
EIST transition, T-states, C1E, or Adaptive Thermal Throttling (AAJ122).

This results in sporadic test fails. Disable btrace on those processors.

gdb/
	* common/linux-btrace.c: Include sys/ptrace, sys/types, sys/wait.h,
	and signal.h.
	(linux_supports_btrace): Add kernel and
	cpuid check.
	(kernel_supports_btrace): New function.
	(cpu_supports_btrace): New function.
	(intel_supports_btrace): New function.
 2013-03-11 08:38:27 +00:00
Markus Metzger 7c97f91ebf Implement branch tracing on Linux based on perf_event such that it can be shared 
between gdb and gdbserver.

gdb/
	* common/linux_btrace.h: New file.
	* common/linux_btrace.c: New file.
	* Makefile.in (SFILES): Add btrace.c.
	(HFILES_NO_SRCDIR): Add common/linux-btrace.h.
	(COMMON_OBS): Add btrace.o.
	(linux-btrace.o): New rule.

gdbserver/
	* Makefile.in (SFILES): Add $(srcdir)/common/linux-btrace.c.
	(linux_btrace_h): New variable.
	(linux-btrace.o): New rule.
 2013-03-11 08:24:07 +00:00