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authorBob Moore <robert.moore@intel.com>2008-04-10 19:06:36 +0400
committerLen Brown <len.brown@intel.com>2008-04-22 14:29:20 -0400
commit773069d48030e670cf2032a13ddf16a2e0034df3 (patch)
tree2f45fd7e90600d26c08c641c75059eb0b15d6dcd /include/acpi
parent4b119e21d0c66c22e8ca03df05d9de623d0eb50f (diff)
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ACPICA: Several fixes for internal method result stack
fixes STACK_OVERFLOW exception on nested method calls. internal bugzilla 262 and 275. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acconfig.h13
-rw-r--r--include/acpi/acdispat.h16
-rw-r--r--include/acpi/aclocal.h5
-rw-r--r--include/acpi/acstruct.h3
4 files changed, 18 insertions, 19 deletions
diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
index 422f29c06c77..d13bab452b83 100644
--- a/include/acpi/acconfig.h
+++ b/include/acpi/acconfig.h
@@ -63,7 +63,7 @@
/* Current ACPICA subsystem version in YYYYMMDD format */
-#define ACPI_CA_VERSION 0x20070126
+#define ACPI_CA_VERSION 0x20070307
/*
* OS name, used for the _OS object. The _OS object is essentially obsolete,
@@ -150,6 +150,17 @@
#define ACPI_OBJ_NUM_OPERANDS 8
#define ACPI_OBJ_MAX_OPERAND 7
+/* Number of elements in the Result Stack frame, can be an arbitrary value */
+
+#define ACPI_RESULTS_FRAME_OBJ_NUM 8
+
+/*
+ * Maximal number of elements the Result Stack can contain,
+ * it may be an arbitray value not exceeding the types of
+ * result_size and result_count (now u8).
+ */
+#define ACPI_RESULTS_OBJ_NUM_MAX 255
+
/* Names within the namespace are 4 bytes long */
#define ACPI_NAME_SIZE 4
diff --git a/include/acpi/acdispat.h b/include/acpi/acdispat.h
index 7f690bb0f02f..70d649e92c41 100644
--- a/include/acpi/acdispat.h
+++ b/include/acpi/acdispat.h
@@ -303,7 +303,7 @@ acpi_ds_init_aml_walk(struct acpi_walk_state *walk_state,
u32 aml_length,
struct acpi_evaluate_info *info, u8 pass_number);
-acpi_status
+void
acpi_ds_obj_stack_pop_and_delete(u32 pop_count,
struct acpi_walk_state *walk_state);
@@ -316,21 +316,11 @@ void
acpi_ds_push_walk_state(struct acpi_walk_state *walk_state,
struct acpi_thread_state *thread);
-acpi_status acpi_ds_result_stack_pop(struct acpi_walk_state *walk_state);
-
-acpi_status acpi_ds_result_stack_push(struct acpi_walk_state *walk_state);
-
acpi_status acpi_ds_result_stack_clear(struct acpi_walk_state *walk_state);
struct acpi_walk_state *acpi_ds_get_current_walk_state(struct acpi_thread_state
*thread);
-#ifdef ACPI_FUTURE_USAGE
-acpi_status
-acpi_ds_result_remove(union acpi_operand_object **object,
- u32 index, struct acpi_walk_state *walk_state);
-#endif
-
acpi_status
acpi_ds_result_pop(union acpi_operand_object **object,
struct acpi_walk_state *walk_state);
@@ -339,8 +329,4 @@ acpi_status
acpi_ds_result_push(union acpi_operand_object *object,
struct acpi_walk_state *walk_state);
-acpi_status
-acpi_ds_result_pop_from_bottom(union acpi_operand_object **object,
- struct acpi_walk_state *walk_state);
-
#endif /* _ACDISPAT_H_ */
diff --git a/include/acpi/aclocal.h b/include/acpi/aclocal.h
index 202cd4242ba1..0b7c9a9e3c84 100644
--- a/include/acpi/aclocal.h
+++ b/include/acpi/aclocal.h
@@ -522,9 +522,8 @@ struct acpi_thread_state {
* AML arguments
*/
struct acpi_result_values {
- ACPI_STATE_COMMON u8 num_results;
- u8 last_insert;
- union acpi_operand_object *obj_desc[ACPI_OBJ_NUM_OPERANDS];
+ ACPI_STATE_COMMON
+ union acpi_operand_object *obj_desc[ACPI_RESULTS_FRAME_OBJ_NUM];
};
typedef
diff --git a/include/acpi/acstruct.h b/include/acpi/acstruct.h
index 88482655407f..19b838dc1a16 100644
--- a/include/acpi/acstruct.h
+++ b/include/acpi/acstruct.h
@@ -80,12 +80,15 @@ struct acpi_walk_state {
u16 opcode; /* Current AML opcode */
u8 next_op_info; /* Info about next_op */
u8 num_operands; /* Stack pointer for Operands[] array */
+ u8 operand_index; /* Index into operand stack, to be used by acpi_ds_obj_stack_push */
acpi_owner_id owner_id; /* Owner of objects created during the walk */
u8 last_predicate; /* Result of last predicate */
u8 current_result;
u8 return_used;
u8 scope_depth;
u8 pass_number; /* Parse pass during table load */
+ u8 result_size; /* Total elements for the result stack */
+ u8 result_count; /* Current number of occupied elements of result stack */
u32 aml_offset;
u32 arg_types;
u32 method_breakpoint; /* For single stepping */