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authorBob Moore <robert.moore@intel.com>2009-04-22 13:22:38 +0800
committerLen Brown <len.brown@intel.com>2009-05-27 00:30:50 -0400
commit2b09ce98a25e467455ecd81354cc18381628be75 (patch)
treee3f332f49eee62cee228b1b24cf0fe7a15ed9cc2 /drivers/acpi
parentba9c3f550e5792fbce2bbd7a429bf6f6d1f45fda (diff)
ACPICA: Fix implementation of AML BreakPoint operator (break to debugger)
The AML BreakPoint opcode will now cause a break into the AML debugger if it is present/configured. This matches the expected behavior per the ACPI specification. Previously, only a message was output. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/acpica/dsopcode.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index b4c87b5053e..584d766e6f1 100644
--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -1386,14 +1386,19 @@ acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state,
case AML_BREAK_POINT_OP:
- /* Call up to the OS service layer to handle this */
-
- status =
- acpi_os_signal(ACPI_SIGNAL_BREAKPOINT,
- "Executed AML Breakpoint opcode");
+ /*
+ * Set the single-step flag. This will cause the debugger (if present)
+ * to break to the console within the AML debugger at the start of the
+ * next AML instruction.
+ */
+ ACPI_DEBUGGER_EXEC(acpi_gbl_cm_single_step = TRUE);
+ ACPI_DEBUGGER_EXEC(acpi_os_printf
+ ("**break** Executed AML BreakPoint opcode\n"));
- /* If and when it returns, all done. */
+ /* Call to the OSL in case OS wants a piece of the action */
+ status = acpi_os_signal(ACPI_SIGNAL_BREAKPOINT,
+ "Executed AML Breakpoint opcode");
break;
case AML_BREAK_OP: