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ACPICA: Fix implementation of AML BreakPoint operator (break to debugger)

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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>
This commit is contained in:
Bob Moore 2009-04-22 13:22:38 +08:00 committed by Len Brown
parent ba9c3f550e
commit 2b09ce98a2
1 changed files with 11 additions and 6 deletions
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17
drivers/acpi/acpica/dsopcode.c
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@ -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 */
/*
* 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"));
status =
acpi_os_signal(ACPI_SIGNAL_BREAKPOINT,
"Executed AML Breakpoint opcode");
/* 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: