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ACPICA: Several fixes for internal method result stack

Browse source 
fixes STACK_OVERFLOW exception on nested method calls. internal
bugzilla 262 and 275.

Signed-off-by: Bob Moore <[email protected]>
Signed-off-by: Alexey Starikovskiy <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Bob Moore 2008-04-10 19:06:36 +04:00 • committed by Len Brown
commit 773069d480
10 changed files with 179 additions and 501 deletions
Download patch file Download diff file Expand all files Collapse all files

13
include/acpi/acconfig.h
View file

@ -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

16
include/acpi/acdispat.h
View file

@ -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_ */

5
include/acpi/aclocal.h
View file

@ -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

3
include/acpi/acstruct.h
View file

@ -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 */