ACPICA 20050408 from Bob Moore

Fixed three cases in the interpreter where an "index"
argument to an ASL function was still (internally) 32
bits instead of the required 64 bits.  This was the Index
argument to the Index, Mid, and Match operators.

The "strupr" function is now permanently local
(acpi_ut_strupr), since this is not a POSIX-defined
function and not present in most kernel-level C
libraries. References to the C library strupr function
have been removed from the headers.

Completed the deployment of static
functions/prototypes. All prototypes with the static
attribute have been moved from the headers to the owning
C file.

ACPICA 20050329 from Bob Moore

An error is now generated if an attempt is made to create
a Buffer Field of length zero (A CreateField with a length
operand of zero.)

The interpreter now issues a warning whenever executable
code at the module level is detected during ACPI table
load. This will give some idea of the prevalence of this
type of code.

Implemented support for references to named objects (other
than control methods) within package objects.

Enhanced package object output for the debug
object. Package objects are now completely dumped, showing
all elements.

Enhanced miscellaneous object output for the debug
object. Any object can now be written to the debug object
(for example, a device object can be written, and the type
of the object will be displayed.)

The "static" qualifier has been added to all local
functions across the core subsystem.

The number of "long" lines (> 80 chars) within the source
has been significantly reduced, by about 1/3.

Cleaned up all header files to ensure that all CA/iASL
functions are prototyped (even static functions) and the
formatting is consistent.

Two new header files have been added, acopcode.h and
acnames.h.

Removed several obsolete functions that were no longer
used.

Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 70 insertions, 35 deletions

diff --git a/drivers/acpi/dispatcher/dsopcode.c b/drivers/acpi/dispatcher/dsopcode.c
index 5c987a0e7b75..ba13bca28bee 100644
--- a/drivers/acpi/dispatcher/dsopcode.c
+++ b/drivers/acpi/dispatcher/dsopcode.c
@@ -54,12 +54,31 @@
 #define _COMPONENT          ACPI_DISPATCHER
          ACPI_MODULE_NAME    ("dsopcode")
 
+/* Local prototypes */
 
-/*****************************************************************************
+static acpi_status
+acpi_ds_execute_arguments (
+        struct acpi_namespace_node      *node,
+        struct acpi_namespace_node      *scope_node,
+        u32                             aml_length,
+        u8                              *aml_start);
+
+static acpi_status
+acpi_ds_init_buffer_field (
+        u16                             aml_opcode,
+        union acpi_operand_object       *obj_desc,
+        union acpi_operand_object       *buffer_desc,
+        union acpi_operand_object       *offset_desc,
+        union acpi_operand_object       *length_desc,
+        union acpi_operand_object       *result_desc);
+
+
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_execute_arguments
  *
- * PARAMETERS:  Node                - Parent NS node
+ * PARAMETERS:  Node                - Object NS node
+ *              scope_node          - Parent NS node
  *              aml_length          - Length of executable AML
  *              aml_start           - Pointer to the AML
  *
@@ -67,9 +86,9 @@
  *
  * DESCRIPTION: Late (deferred) execution of region or field arguments
  *
- ****************************************************************************/
+ ******************************************************************************/
 
-acpi_status
+static acpi_status
 acpi_ds_execute_arguments (
         struct acpi_namespace_node      *node,
         struct acpi_namespace_node      *scope_node,
@@ -162,7 +181,7 @@ acpi_ds_execute_arguments (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_get_buffer_field_arguments
  *
@@ -173,7 +192,7 @@ acpi_ds_execute_arguments (
  * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late
  *              evaluation of these field attributes.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_get_buffer_field_arguments (
@@ -208,7 +227,7 @@ acpi_ds_get_buffer_field_arguments (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_get_buffer_arguments
  *
@@ -219,7 +238,7 @@ acpi_ds_get_buffer_field_arguments (
  * DESCRIPTION: Get Buffer length and initializer byte list.  This implements
  *              the late evaluation of these attributes.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_get_buffer_arguments (
@@ -255,7 +274,7 @@ acpi_ds_get_buffer_arguments (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_get_package_arguments
  *
@@ -266,7 +285,7 @@ acpi_ds_get_buffer_arguments (
  * DESCRIPTION: Get Package length and initializer byte list.  This implements
  *              the late evaluation of these attributes.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_get_package_arguments (
@@ -353,17 +372,17 @@ acpi_ds_get_region_arguments (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_initialize_region
  *
- * PARAMETERS:  Op              - A valid region Op object
+ * PARAMETERS:  obj_handle      - Region namespace node
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Front end to ev_initialize_region
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_initialize_region (
@@ -382,7 +401,7 @@ acpi_ds_initialize_region (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_init_buffer_field
  *
@@ -390,16 +409,16 @@ acpi_ds_initialize_region (
  *              obj_desc        - buffer_field object
  *              buffer_desc     - Host Buffer
  *              offset_desc     - Offset into buffer
- *              Length          - Length of field (CREATE_FIELD_OP only)
- *              Result          - Where to store the result
+ *              length_desc     - Length of field (CREATE_FIELD_OP only)
+ *              result_desc     - Where to store the result
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Perform actual initialization of a buffer field
  *
- ****************************************************************************/
+ ******************************************************************************/
 
-acpi_status
+static acpi_status
 acpi_ds_init_buffer_field (
         u16                             aml_opcode,
         union acpi_operand_object       *obj_desc,
@@ -435,8 +454,10 @@ acpi_ds_init_buffer_field (
          * after resolution in acpi_ex_resolve_operands().
          */
         if (ACPI_GET_DESCRIPTOR_TYPE (result_desc) != ACPI_DESC_TYPE_NAMED) {
-                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(%s) destination not a NS Node [%s]\n",
-                                acpi_ps_get_opcode_name (aml_opcode), acpi_ut_get_descriptor_name (result_desc)));
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "(%s) destination not a NS Node [%s]\n",
+                                acpi_ps_get_opcode_name (aml_opcode),
+                                acpi_ut_get_descriptor_name (result_desc)));
 
                 status = AE_AML_OPERAND_TYPE;
                 goto cleanup;
@@ -452,9 +473,18 @@ acpi_ds_init_buffer_field (
 
                 /* Offset is in bits, count is in bits */
 
+                field_flags = AML_FIELD_ACCESS_BYTE;
                 bit_offset = offset;
                 bit_count  = (u32) length_desc->integer.value;
-                field_flags = AML_FIELD_ACCESS_BYTE;
+
+                /* Must have a valid (>0) bit count */
+
+                if (bit_count == 0) {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "Attempt to create_field of length 0\n"));
+                        status = AE_AML_OPERAND_VALUE;
+                        goto cleanup;
+                }
                 break;
 
         case AML_CREATE_BIT_FIELD_OP:
@@ -527,7 +557,8 @@ acpi_ds_init_buffer_field (
 
         /*
          * Initialize areas of the field object that are common to all fields
-         * For field_flags, use LOCK_RULE = 0 (NO_LOCK), UPDATE_RULE = 0 (UPDATE_PRESERVE)
+         * For field_flags, use LOCK_RULE = 0 (NO_LOCK),
+         * UPDATE_RULE = 0 (UPDATE_PRESERVE)
          */
         status = acpi_ex_prep_common_field_object (obj_desc, field_flags, 0,
                           bit_offset, bit_count);
@@ -539,8 +570,8 @@ acpi_ds_init_buffer_field (
 
         /* Reference count for buffer_desc inherits obj_desc count */
 
-        buffer_desc->common.reference_count = (u16) (buffer_desc->common.reference_count +
-                          obj_desc->common.reference_count);
+        buffer_desc->common.reference_count = (u16)
+                (buffer_desc->common.reference_count + obj_desc->common.reference_count);
 
 
 cleanup:
@@ -569,7 +600,7 @@ cleanup:
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_eval_buffer_field_operands
  *
@@ -581,7 +612,7 @@ cleanup:
  * DESCRIPTION: Get buffer_field Buffer and Index
  *              Called from acpi_ds_exec_end_op during buffer_field parse tree walk
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_eval_buffer_field_operands (
@@ -656,7 +687,7 @@ acpi_ds_eval_buffer_field_operands (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_eval_region_operands
  *
@@ -668,7 +699,7 @@ acpi_ds_eval_buffer_field_operands (
  * DESCRIPTION: Get region address and length
  *              Called from acpi_ds_exec_end_op during op_region parse tree walk
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_eval_region_operands (
@@ -686,7 +717,8 @@ acpi_ds_eval_region_operands (
 
 
         /*
-         * This is where we evaluate the address and length fields of the op_region declaration
+         * This is where we evaluate the address and length fields of the
+         * op_region declaration
          */
         node =  op->common.node;
 
@@ -707,7 +739,8 @@ acpi_ds_eval_region_operands (
 
         /* Resolve the length and address operands to numbers */
 
-        status = acpi_ex_resolve_operands (op->common.aml_opcode, ACPI_WALK_OPERANDS, walk_state);
+        status = acpi_ex_resolve_operands (op->common.aml_opcode,
+                         ACPI_WALK_OPERANDS, walk_state);
         if (ACPI_FAILURE (status)) {
                 return_ACPI_STATUS (status);
         }
@@ -736,7 +769,8 @@ acpi_ds_eval_region_operands (
          */
         operand_desc = walk_state->operands[walk_state->num_operands - 2];
 
-        obj_desc->region.address = (acpi_physical_address) operand_desc->integer.value;
+        obj_desc->region.address = (acpi_physical_address)
+                          operand_desc->integer.value;
         acpi_ut_remove_reference (operand_desc);
 
         ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "rgn_obj %p Addr %8.8X%8.8X Len %X\n",
@@ -752,7 +786,7 @@ acpi_ds_eval_region_operands (
 }
 
 
-/*****************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_ds_eval_data_object_operands
  *
@@ -765,7 +799,7 @@ acpi_ds_eval_region_operands (
  * DESCRIPTION: Get the operands and complete the following data object types:
  *              Buffer, Package.
  *
- ****************************************************************************/
+ ******************************************************************************/
 
 acpi_status
 acpi_ds_eval_data_object_operands (
@@ -830,7 +864,7 @@ acpi_ds_eval_data_object_operands (
 
         if (ACPI_SUCCESS (status)) {
                 /*
-                 * Return the object in the walk_state, unless the parent is a package --
+                 * Return the object in the walk_state, unless the parent is a package -
                  * in this case, the return object will be stored in the parse tree
                  * for the package.
                  */
@@ -988,7 +1022,8 @@ acpi_ds_exec_end_control_op (
                         status = AE_CTRL_PENDING;
                 }
 
-                ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] termination! Op=%p\n", op));
+                ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+                        "[WHILE_OP] termination! Op=%p\n",op));
 
                 /* Pop this control state and free it */