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path: root/drivers/acpi/executer/exoparg3.c
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Diffstat (limited to 'drivers/acpi/executer/exoparg3.c')
-rw-r--r--drivers/acpi/executer/exoparg3.c167
1 files changed, 88 insertions, 79 deletions
diff --git a/drivers/acpi/executer/exoparg3.c b/drivers/acpi/executer/exoparg3.c
index 23b068adbf58..483365777670 100644
--- a/drivers/acpi/executer/exoparg3.c
+++ b/drivers/acpi/executer/exoparg3.c
@@ -42,16 +42,13 @@
* POSSIBILITY OF SUCH DAMAGES.
*/
-
#include <acpi/acpi.h>
#include <acpi/acinterp.h>
#include <acpi/acparser.h>
#include <acpi/amlcode.h>
-
#define _COMPONENT ACPI_EXECUTER
- ACPI_MODULE_NAME ("exoparg3")
-
+ACPI_MODULE_NAME("exoparg3")
/*!
* Naming convention for AML interpreter execution routines.
@@ -74,8 +71,6 @@
* The AcpiExOpcode* functions are called via the Dispatcher component with
* fully resolved operands.
!*/
-
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_3A_0T_0R
@@ -87,61 +82,53 @@
* DESCRIPTION: Execute Triadic operator (3 operands)
*
******************************************************************************/
-
-acpi_status
-acpi_ex_opcode_3A_0T_0R (
- struct acpi_walk_state *walk_state)
+acpi_status acpi_ex_opcode_3A_0T_0R(struct acpi_walk_state *walk_state)
{
- union acpi_operand_object **operand = &walk_state->operands[0];
- struct acpi_signal_fatal_info *fatal;
- acpi_status status = AE_OK;
-
-
- ACPI_FUNCTION_TRACE_STR ("ex_opcode_3A_0T_0R",
- acpi_ps_get_opcode_name (walk_state->opcode));
+ union acpi_operand_object **operand = &walk_state->operands[0];
+ struct acpi_signal_fatal_info *fatal;
+ acpi_status status = AE_OK;
+ ACPI_FUNCTION_TRACE_STR("ex_opcode_3A_0T_0R",
+ acpi_ps_get_opcode_name(walk_state->opcode));
switch (walk_state->opcode) {
- case AML_FATAL_OP: /* Fatal (fatal_type fatal_code fatal_arg) */
+ case AML_FATAL_OP: /* Fatal (fatal_type fatal_code fatal_arg) */
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
- "fatal_op: Type %X Code %X Arg %X <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
- (u32) operand[0]->integer.value,
- (u32) operand[1]->integer.value,
- (u32) operand[2]->integer.value));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "fatal_op: Type %X Code %X Arg %X <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
+ (u32) operand[0]->integer.value,
+ (u32) operand[1]->integer.value,
+ (u32) operand[2]->integer.value));
- fatal = ACPI_MEM_ALLOCATE (sizeof (struct acpi_signal_fatal_info));
+ fatal =
+ ACPI_MEM_ALLOCATE(sizeof(struct acpi_signal_fatal_info));
if (fatal) {
- fatal->type = (u32) operand[0]->integer.value;
- fatal->code = (u32) operand[1]->integer.value;
+ fatal->type = (u32) operand[0]->integer.value;
+ fatal->code = (u32) operand[1]->integer.value;
fatal->argument = (u32) operand[2]->integer.value;
}
/* Always signal the OS! */
- status = acpi_os_signal (ACPI_SIGNAL_FATAL, fatal);
+ status = acpi_os_signal(ACPI_SIGNAL_FATAL, fatal);
/* Might return while OS is shutting down, just continue */
- ACPI_MEM_FREE (fatal);
+ ACPI_MEM_FREE(fatal);
break;
-
default:
- ACPI_REPORT_ERROR (("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n",
- walk_state->opcode));
+ ACPI_REPORT_ERROR(("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n", walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
+ cleanup:
-cleanup:
-
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_3A_1T_1R
@@ -154,31 +141,28 @@ cleanup:
*
******************************************************************************/
-acpi_status
-acpi_ex_opcode_3A_1T_1R (
- struct acpi_walk_state *walk_state)
+acpi_status acpi_ex_opcode_3A_1T_1R(struct acpi_walk_state *walk_state)
{
- union acpi_operand_object **operand = &walk_state->operands[0];
- union acpi_operand_object *return_desc = NULL;
- char *buffer;
- acpi_status status = AE_OK;
- acpi_integer index;
- acpi_size length;
-
-
- ACPI_FUNCTION_TRACE_STR ("ex_opcode_3A_1T_1R",
- acpi_ps_get_opcode_name (walk_state->opcode));
+ union acpi_operand_object **operand = &walk_state->operands[0];
+ union acpi_operand_object *return_desc = NULL;
+ char *buffer = NULL;
+ acpi_status status = AE_OK;
+ acpi_integer index;
+ acpi_size length;
+ ACPI_FUNCTION_TRACE_STR("ex_opcode_3A_1T_1R",
+ acpi_ps_get_opcode_name(walk_state->opcode));
switch (walk_state->opcode) {
- case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
+ case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
/*
* Create the return object. The Source operand is guaranteed to be
* either a String or a Buffer, so just use its type.
*/
- return_desc = acpi_ut_create_internal_object (
- ACPI_GET_OBJECT_TYPE (operand[0]));
+ return_desc =
+ acpi_ut_create_internal_object(ACPI_GET_OBJECT_TYPE
+ (operand[0]));
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
@@ -193,67 +177,92 @@ acpi_ex_opcode_3A_1T_1R (
* If the index is beyond the length of the String/Buffer, or if the
* requested length is zero, return a zero-length String/Buffer
*/
- if ((index < operand[0]->string.length) &&
- (length > 0)) {
- /* Truncate request if larger than the actual String/Buffer */
-
- if ((index + length) >
- operand[0]->string.length) {
- length = (acpi_size) operand[0]->string.length -
- (acpi_size) index;
- }
+ if (index >= operand[0]->string.length) {
+ length = 0;
+ }
+
+ /* Truncate request if larger than the actual String/Buffer */
+
+ else if ((index + length) > operand[0]->string.length) {
+ length = (acpi_size) operand[0]->string.length -
+ (acpi_size) index;
+ }
+
+ /* Strings always have a sub-pointer, not so for buffers */
+
+ switch (ACPI_GET_OBJECT_TYPE(operand[0])) {
+ case ACPI_TYPE_STRING:
- /* Allocate a new buffer for the String/Buffer */
+ /* Always allocate a new buffer for the String */
- buffer = ACPI_MEM_CALLOCATE ((acpi_size) length + 1);
+ buffer = ACPI_MEM_CALLOCATE((acpi_size) length + 1);
if (!buffer) {
status = AE_NO_MEMORY;
goto cleanup;
}
+ break;
- /* Copy the portion requested */
+ case ACPI_TYPE_BUFFER:
- ACPI_MEMCPY (buffer, operand[0]->string.pointer + index,
- length);
+ /* If the requested length is zero, don't allocate a buffer */
- /* Set the length of the new String/Buffer */
+ if (length > 0) {
+ /* Allocate a new buffer for the Buffer */
- return_desc->string.pointer = buffer;
- return_desc->string.length = (u32) length;
+ buffer = ACPI_MEM_CALLOCATE(length);
+ if (!buffer) {
+ status = AE_NO_MEMORY;
+ goto cleanup;
+ }
+ }
+ break;
+
+ default: /* Should not happen */
+
+ status = AE_AML_OPERAND_TYPE;
+ goto cleanup;
}
+ if (length > 0) {
+ /* Copy the portion requested */
+
+ ACPI_MEMCPY(buffer, operand[0]->string.pointer + index,
+ length);
+ }
+
+ /* Set the length of the new String/Buffer */
+
+ return_desc->string.pointer = buffer;
+ return_desc->string.length = (u32) length;
+
/* Mark buffer initialized */
return_desc->buffer.flags |= AOPOBJ_DATA_VALID;
break;
-
default:
- ACPI_REPORT_ERROR (("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n",
- walk_state->opcode));
+ ACPI_REPORT_ERROR(("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n", walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
/* Store the result in the target */
- status = acpi_ex_store (return_desc, operand[3], walk_state);
+ status = acpi_ex_store(return_desc, operand[3], walk_state);
-cleanup:
+ cleanup:
/* Delete return object on error */
- if (ACPI_FAILURE (status)) {
- acpi_ut_remove_reference (return_desc);
+ if (ACPI_FAILURE(status) || walk_state->result_obj) {
+ acpi_ut_remove_reference(return_desc);
}
/* Set the return object and exit */
- if (!walk_state->result_obj) {
+ else {
walk_state->result_obj = return_desc;
}
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
-
-
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-30 20:11:01 +0300