utresrc.o \
utstate.o \
utstring.o \
+ utstrsuppt.o \
utstrtoul64.o \
utxface.o \
utxfinit.o \
acpi_hw_validate_register(struct acpi_generic_address *reg,
u8 max_bit_width, u64 *address);
-acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg);
+acpi_status acpi_hw_read(u64 *value, struct acpi_generic_address *reg);
-acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg);
+acpi_status acpi_hw_write(u64 value, struct acpi_generic_address *reg);
struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id);
*/
acpi_status
acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
- union acpi_operand_object **result_desc, u32 flags);
+ union acpi_operand_object **result_desc,
+ u32 implicit_conversion);
acpi_status
acpi_ex_convert_to_buffer(union acpi_operand_object *obj_desc,
struct acpi_walk_state *walk_state,
u8 implicit_conversion);
-#define ACPI_IMPLICIT_CONVERSION TRUE
-#define ACPI_NO_IMPLICIT_CONVERSION FALSE
-
/*
* exstoren - resolve/store object
*/
#define ACPI_MSG_SUFFIX \
acpi_os_printf (" (%8.8X/%s-%u)\n", ACPI_CA_VERSION, module_name, line_number)
+/* Flags to indicate implicit or explicit string-to-integer conversion */
+
+#define ACPI_IMPLICIT_CONVERSION TRUE
+#define ACPI_NO_IMPLICIT_CONVERSION FALSE
+
/* Types for Resource descriptor entries */
#define ACPI_INVALID_RESOURCE 0
int acpi_ut_stricmp(char *string1, char *string2);
-acpi_status acpi_ut_strtoul64(char *string, u32 flags, u64 *ret_integer);
+/*
+ * utstrsuppt - string-to-integer conversion support functions
+ */
+acpi_status acpi_ut_convert_octal_string(char *string, u64 *return_value);
+
+acpi_status acpi_ut_convert_decimal_string(char *string, u64 *return_value_ptr);
+
+acpi_status acpi_ut_convert_hex_string(char *string, u64 *return_value_ptr);
+
+char acpi_ut_remove_whitespace(char **string);
+
+char acpi_ut_remove_leading_zeros(char **string);
+
+u8 acpi_ut_detect_hex_prefix(char **string);
+
+u8 acpi_ut_detect_octal_prefix(char **string);
/*
- * Values for Flags above
- * Note: LIMIT values correspond to acpi_gbl_integer_byte_width values (4/8)
+ * utstrtoul64 - string-to-integer conversion functions
*/
-#define ACPI_STRTOUL_32BIT 0x04 /* 4 bytes */
-#define ACPI_STRTOUL_64BIT 0x08 /* 8 bytes */
-#define ACPI_STRTOUL_BASE16 0x10 /* Default: Base10/16 */
+acpi_status acpi_ut_strtoul64(char *string, u64 *ret_integer);
+
+u64 acpi_ut_explicit_strtoul64(char *string);
+
+u64 acpi_ut_implicit_strtoul64(char *string);
/*
* utglobal - Global data structures and procedures
default:
object->type = ACPI_TYPE_INTEGER;
- status = acpi_ut_strtoul64(string,
- (acpi_gbl_integer_byte_width |
- ACPI_STRTOUL_BASE16),
- &object->integer.value);
+ status = acpi_ut_strtoul64(string, &object->integer.value);
break;
}
* object. Implicitly convert the argument if necessary.
*/
status = acpi_ex_convert_to_integer(obj_desc, &local_obj_desc,
- ACPI_STRTOUL_BASE16);
+ ACPI_IMPLICIT_CONVERSION);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
struct acpi_gpe_handler_info *gpe_handler_info;
u32 int_status = ACPI_INTERRUPT_NOT_HANDLED;
u8 enabled_status_byte;
- u32 status_reg;
- u32 enable_reg;
+ u64 status_reg;
+ u64 enable_reg;
acpi_cpu_flags flags;
u32 i;
u32 j;
gpe_register_info->base_gpe_number,
gpe_register_info->base_gpe_number +
(ACPI_GPE_REGISTER_WIDTH - 1),
- status_reg, enable_reg,
+ (u32)status_reg, (u32)enable_reg,
gpe_register_info->enable_for_run,
gpe_register_info->enable_for_wake));
status =
acpi_ex_convert_to_integer(local_operand1, &temp_operand1,
- ACPI_STRTOUL_BASE16);
+ ACPI_IMPLICIT_CONVERSION);
break;
case ACPI_TYPE_BUFFER:
*
* FUNCTION: acpi_ex_convert_to_integer
*
- * PARAMETERS: obj_desc - Object to be converted. Must be an
- * Integer, Buffer, or String
- * result_desc - Where the new Integer object is returned
- * flags - Used for string conversion
+ * PARAMETERS: obj_desc - Object to be converted. Must be an
+ * Integer, Buffer, or String
+ * result_desc - Where the new Integer object is returned
+ * implicit_conversion - Used for string conversion
*
* RETURN: Status
*
acpi_status
acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
- union acpi_operand_object **result_desc, u32 flags)
+ union acpi_operand_object **result_desc,
+ u32 implicit_conversion)
{
union acpi_operand_object *return_desc;
u8 *pointer;
u64 result;
u32 i;
u32 count;
- acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ex_convert_to_integer, obj_desc);
* hexadecimal as per the ACPI specification. The only exception (as
* of ACPI 3.0) is that the to_integer() operator allows both decimal
* and hexadecimal strings (hex prefixed with "0x").
+ *
+ * Explicit conversion is used only by to_integer.
+ * All other string-to-integer conversions are implicit conversions.
*/
- status = acpi_ut_strtoul64(ACPI_CAST_PTR(char, pointer),
- (acpi_gbl_integer_byte_width |
- flags), &result);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ if (implicit_conversion) {
+ result =
+ acpi_ut_implicit_strtoul64(ACPI_CAST_PTR
+ (char, pointer));
+ } else {
+ result =
+ acpi_ut_explicit_strtoul64(ACPI_CAST_PTR
+ (char, pointer));
}
break;
*/
status =
acpi_ex_convert_to_integer(source_desc, result_desc,
- ACPI_STRTOUL_BASE16);
+ ACPI_IMPLICIT_CONVERSION);
break;
case ACPI_TYPE_STRING:
case ACPI_TYPE_INTEGER:
status = acpi_ex_convert_to_integer(operand1, &local_operand1,
- ACPI_STRTOUL_BASE16);
+ ACPI_IMPLICIT_CONVERSION);
break;
case ACPI_TYPE_STRING:
* Known as "Implicit Source Operand Conversion"
*/
status = acpi_ex_convert_to_integer(obj_desc, stack_ptr,
- ACPI_STRTOUL_BASE16);
+ ACPI_IMPLICIT_CONVERSION);
if (ACPI_FAILURE(status)) {
if (status == AE_TYPE) {
ACPI_ERROR((AE_INFO,
{
struct acpi_gpe_register_info *gpe_register_info;
acpi_status status = AE_OK;
- u32 enable_mask;
+ u64 enable_mask;
u32 register_bit;
ACPI_FUNCTION_ENTRY();
acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
acpi_event_status *event_status)
{
- u32 in_byte;
+ u64 in_byte;
u32 register_bit;
struct acpi_gpe_register_info *gpe_register_info;
acpi_event_status local_event_status = 0;
*
* RETURN: Status
*
- * DESCRIPTION: Read from either memory or IO space. This is a 32-bit max
- * version of acpi_read, used internally since the overhead of
- * 64-bit values is not needed.
+ * DESCRIPTION: Read from either memory or IO space. This is a 64-bit max
+ * version of acpi_read.
*
* LIMITATIONS: <These limitations also apply to acpi_hw_write>
* space_ID must be system_memory or system_IO.
*
******************************************************************************/
-acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg)
+acpi_status acpi_hw_read(u64 *value, struct acpi_generic_address *reg)
{
u64 address;
u8 access_width;
/* Validate contents of the GAS register */
- status = acpi_hw_validate_register(reg, 32, &address);
+ status = acpi_hw_validate_register(reg, 64, &address);
if (ACPI_FAILURE(status)) {
return (status);
}
/*
- * Initialize entire 32-bit return value to zero, convert access_width
+ * Initialize entire 64-bit return value to zero, convert access_width
* into number of bits based
*/
*value = 0;
- access_width = acpi_hw_get_access_bit_width(address, reg, 32);
+ access_width = acpi_hw_get_access_bit_width(address, reg, 64);
bit_width = reg->bit_offset + reg->bit_width;
bit_offset = reg->bit_offset;
index = 0;
while (bit_width) {
if (bit_offset >= access_width) {
- value32 = 0;
+ value64 = 0;
bit_offset -= access_width;
} else {
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
ACPI_DIV_8
(access_width),
&value64, access_width);
- value32 = (u32)value64;
} else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
status = acpi_hw_read_port((acpi_io_address)
(access_width),
&value32,
access_width);
+ value64 = (u64)value32;
}
}
/*
* Use offset style bit writes because "Index * AccessWidth" is
- * ensured to be less than 32-bits by acpi_hw_validate_register().
+ * ensured to be less than 64-bits by acpi_hw_validate_register().
*/
ACPI_SET_BITS(value, index * access_width,
- ACPI_MASK_BITS_ABOVE_32(access_width), value32);
+ ACPI_MASK_BITS_ABOVE_64(access_width), value64);
bit_width -=
bit_width > access_width ? access_width : bit_width;
}
ACPI_DEBUG_PRINT((ACPI_DB_IO,
- "Read: %8.8X width %2d from %8.8X%8.8X (%s)\n",
- *value, access_width, ACPI_FORMAT_UINT64(address),
+ "Read: %8.8X%8.8X width %2d from %8.8X%8.8X (%s)\n",
+ ACPI_FORMAT_UINT64(*value), access_width,
+ ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(reg->space_id)));
return (status);
*
* RETURN: Status
*
- * DESCRIPTION: Write to either memory or IO space. This is a 32-bit max
- * version of acpi_write, used internally since the overhead of
- * 64-bit values is not needed.
+ * DESCRIPTION: Write to either memory or IO space. This is a 64-bit max
+ * version of acpi_write.
*
******************************************************************************/
-acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg)
+acpi_status acpi_hw_write(u64 value, struct acpi_generic_address *reg)
{
u64 address;
u8 access_width;
u32 bit_width;
u8 bit_offset;
u64 value64;
- u32 value32;
u8 index;
acpi_status status;
/* Validate contents of the GAS register */
- status = acpi_hw_validate_register(reg, 32, &address);
+ status = acpi_hw_validate_register(reg, 64, &address);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert access_width into number of bits based */
- access_width = acpi_hw_get_access_bit_width(address, reg, 32);
+ access_width = acpi_hw_get_access_bit_width(address, reg, 64);
bit_width = reg->bit_offset + reg->bit_width;
bit_offset = reg->bit_offset;
while (bit_width) {
/*
* Use offset style bit reads because "Index * AccessWidth" is
- * ensured to be less than 32-bits by acpi_hw_validate_register().
+ * ensured to be less than 64-bits by acpi_hw_validate_register().
*/
- value32 = ACPI_GET_BITS(&value, index * access_width,
- ACPI_MASK_BITS_ABOVE_32(access_width));
+ value64 = ACPI_GET_BITS(&value, index * access_width,
+ ACPI_MASK_BITS_ABOVE_64(access_width));
if (bit_offset >= access_width) {
bit_offset -= access_width;
} else {
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
- value64 = (u64)value32;
status =
acpi_os_write_memory((acpi_physical_address)
address +
index *
ACPI_DIV_8
(access_width),
- value32,
+ (u32)value64,
access_width);
}
}
}
ACPI_DEBUG_PRINT((ACPI_DB_IO,
- "Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n",
- value, access_width, ACPI_FORMAT_UINT64(address),
+ "Wrote: %8.8X%8.8X width %2d to %8.8X%8.8X (%s)\n",
+ ACPI_FORMAT_UINT64(value), access_width,
+ ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(reg->space_id)));
return (status);
acpi_status acpi_hw_register_read(u32 register_id, u32 *return_value)
{
u32 value = 0;
+ u64 value64;
acpi_status status;
ACPI_FUNCTION_TRACE(hw_register_read);
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
status =
- acpi_hw_read(&value, &acpi_gbl_FADT.xpm2_control_block);
+ acpi_hw_read(&value64, &acpi_gbl_FADT.xpm2_control_block);
+ value = (u32)value64;
break;
case ACPI_REGISTER_PM_TIMER: /* 32-bit access */
- status = acpi_hw_read(&value, &acpi_gbl_FADT.xpm_timer_block);
+ status = acpi_hw_read(&value64, &acpi_gbl_FADT.xpm_timer_block);
+ value = (u32)value64;
break;
case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */
}
if (ACPI_SUCCESS(status)) {
- *return_value = value;
+ *return_value = (u32)value;
}
return_ACPI_STATUS(status);
{
acpi_status status;
u32 read_value;
+ u64 read_value64;
ACPI_FUNCTION_TRACE(hw_register_write);
* as per the ACPI spec.
*/
status =
- acpi_hw_read(&read_value,
+ acpi_hw_read(&read_value64,
&acpi_gbl_FADT.xpm2_control_block);
if (ACPI_FAILURE(status)) {
goto exit;
}
+ read_value = (u32)read_value64;
/* Insert the bits to be preserved */
{
u32 value_a = 0;
u32 value_b = 0;
+ u64 value64;
acpi_status status;
/* The first register is always required */
- status = acpi_hw_read(&value_a, register_a);
+ status = acpi_hw_read(&value64, register_a);
if (ACPI_FAILURE(status)) {
return (status);
}
+ value_a = (u32)value64;
/* Second register is optional */
if (register_b->address) {
- status = acpi_hw_read(&value_b, register_b);
+ status = acpi_hw_read(&value64, register_b);
if (ACPI_FAILURE(status)) {
return (status);
}
+ value_b = (u32)value64;
}
/*
acpi_status acpi_get_timer(u32 * ticks)
{
acpi_status status;
+ u64 timer_value;
ACPI_FUNCTION_TRACE(acpi_get_timer);
return_ACPI_STATUS(AE_SUPPORT);
}
- status = acpi_hw_read(ticks, &acpi_gbl_FADT.xpm_timer_block);
+ status = acpi_hw_read(&timer_value, &acpi_gbl_FADT.xpm_timer_block);
+ if (ACPI_SUCCESS(status)) {
+
+ /* ACPI PM Timer is defined to be 32 bits (PM_TMR_LEN) */
+
+ *ticks = (u32)timer_value;
+ }
+
return_ACPI_STATUS(status);
}
******************************************************************************/
acpi_status acpi_read(u64 *return_value, struct acpi_generic_address *reg)
{
- u32 value_lo;
- u32 value_hi;
- u32 width;
- u64 address;
acpi_status status;
ACPI_FUNCTION_NAME(acpi_read);
- if (!return_value) {
- return (AE_BAD_PARAMETER);
- }
-
- /* Validate contents of the GAS register. Allow 64-bit transfers */
-
- status = acpi_hw_validate_register(reg, 64, &address);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
-
- /*
- * Two address spaces supported: Memory or I/O. PCI_Config is
- * not supported here because the GAS structure is insufficient
- */
- if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
- status = acpi_os_read_memory((acpi_physical_address)
- address, return_value,
- reg->bit_width);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
- } else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
-
- value_lo = 0;
- value_hi = 0;
-
- width = reg->bit_width;
- if (width == 64) {
- width = 32; /* Break into two 32-bit transfers */
- }
-
- status = acpi_hw_read_port((acpi_io_address)
- address, &value_lo, width);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
-
- if (reg->bit_width == 64) {
-
- /* Read the top 32 bits */
-
- status = acpi_hw_read_port((acpi_io_address)
- (address + 4), &value_hi,
- 32);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
- }
-
- /* Set the return value only if status is AE_OK */
-
- *return_value = (value_lo | ((u64)value_hi << 32));
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_IO,
- "Read: %8.8X%8.8X width %2d from %8.8X%8.8X (%s)\n",
- ACPI_FORMAT_UINT64(*return_value), reg->bit_width,
- ACPI_FORMAT_UINT64(address),
- acpi_ut_get_region_name(reg->space_id)));
-
- return (AE_OK);
+ status = acpi_hw_read(return_value, reg);
+ return (status);
}
ACPI_EXPORT_SYMBOL(acpi_read)
******************************************************************************/
acpi_status acpi_write(u64 value, struct acpi_generic_address *reg)
{
- u32 width;
- u64 address;
acpi_status status;
ACPI_FUNCTION_NAME(acpi_write);
- /* Validate contents of the GAS register. Allow 64-bit transfers */
-
- status = acpi_hw_validate_register(reg, 64, &address);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
-
- /*
- * Two address spaces supported: Memory or IO. PCI_Config is
- * not supported here because the GAS structure is insufficient
- */
- if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
- status = acpi_os_write_memory((acpi_physical_address)
- address, value, reg->bit_width);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
- } else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
-
- width = reg->bit_width;
- if (width == 64) {
- width = 32; /* Break into two 32-bit transfers */
- }
-
- status = acpi_hw_write_port((acpi_io_address)
- address, ACPI_LODWORD(value),
- width);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
-
- if (reg->bit_width == 64) {
- status = acpi_hw_write_port((acpi_io_address)
- (address + 4),
- ACPI_HIDWORD(value), 32);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
- }
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_IO,
- "Wrote: %8.8X%8.8X width %2d to %8.8X%8.8X (%s)\n",
- ACPI_FORMAT_UINT64(value), reg->bit_width,
- ACPI_FORMAT_UINT64(address),
- acpi_ut_get_region_name(reg->space_id)));
-
+ status = acpi_hw_write(value, reg);
return (status);
}
/* String-to-Integer conversion */
- status = acpi_ut_strtoul64(original_object->string.pointer,
- acpi_gbl_integer_byte_width, &value);
+ status =
+ acpi_ut_strtoul64(original_object->string.pointer, &value);
if (ACPI_FAILURE(status)) {
return (status);
}
ACPI_FUNCTION_TRACE(acpi_reallocate_root_table);
/*
- * Only reallocate the root table if the host provided a static buffer
- * for the table array in the call to acpi_initialize_tables.
+ * If there are tables unverified, it is required to reallocate the
+ * root table list to clean up invalid table entries. Otherwise only
+ * reallocate the root table list if the host provided a static buffer
+ * for the table array in the call to acpi_initialize_tables().
*/
- if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
+ if ((acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) &&
+ acpi_gbl_enable_table_validation) {
return_ACPI_STATUS(AE_SUPPORT);
}
--- /dev/null
+/*******************************************************************************
+ *
+ * Module Name: utstrsuppt - Support functions for string-to-integer conversion
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2017, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+
+#define _COMPONENT ACPI_UTILITIES
+ACPI_MODULE_NAME("utstrsuppt")
+
+/* Local prototypes */
+static acpi_status
+acpi_ut_insert_digit(u64 *accumulated_value, u32 base, int ascii_digit);
+
+static acpi_status
+acpi_ut_strtoul_multiply64(u64 multiplicand, u64 multiplier, u64 *out_product);
+
+static acpi_status
+acpi_ut_strtoul_add64(u64 addend1, u64 addend2, u64 *out_sum);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_convert_octal_string
+ *
+ * PARAMETERS: string - Null terminated input string
+ * return_value_ptr - Where the converted value is returned
+ *
+ * RETURN: Status and 64-bit converted integer
+ *
+ * DESCRIPTION: Performs a base 8 conversion of the input string to an
+ * integer value, either 32 or 64 bits.
+ *
+ * NOTE: Maximum 64-bit unsigned octal value is 01777777777777777777777
+ * Maximum 32-bit unsigned octal value is 037777777777
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_convert_octal_string(char *string, u64 *return_value_ptr)
+{
+ u64 accumulated_value = 0;
+ acpi_status status = AE_OK;
+
+ /* Convert each ASCII byte in the input string */
+
+ while (*string) {
+
+ /* Character must be ASCII 0-7, otherwise terminate with no error */
+
+ if (!(ACPI_IS_OCTAL_DIGIT(*string))) {
+ break;
+ }
+
+ /* Convert and insert this octal digit into the accumulator */
+
+ status = acpi_ut_insert_digit(&accumulated_value, 8, *string);
+ if (ACPI_FAILURE(status)) {
+ status = AE_OCTAL_OVERFLOW;
+ break;
+ }
+
+ string++;
+ }
+
+ /* Always return the value that has been accumulated */
+
+ *return_value_ptr = accumulated_value;
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_convert_decimal_string
+ *
+ * PARAMETERS: string - Null terminated input string
+ * return_value_ptr - Where the converted value is returned
+ *
+ * RETURN: Status and 64-bit converted integer
+ *
+ * DESCRIPTION: Performs a base 10 conversion of the input string to an
+ * integer value, either 32 or 64 bits.
+ *
+ * NOTE: Maximum 64-bit unsigned decimal value is 18446744073709551615
+ * Maximum 32-bit unsigned decimal value is 4294967295
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_convert_decimal_string(char *string, u64 *return_value_ptr)
+{
+ u64 accumulated_value = 0;
+ acpi_status status = AE_OK;
+
+ /* Convert each ASCII byte in the input string */
+
+ while (*string) {
+
+ /* Character must be ASCII 0-9, otherwise terminate with no error */
+
+ if (!isdigit(*string)) {
+ break;
+ }
+
+ /* Convert and insert this decimal digit into the accumulator */
+
+ status = acpi_ut_insert_digit(&accumulated_value, 10, *string);
+ if (ACPI_FAILURE(status)) {
+ status = AE_DECIMAL_OVERFLOW;
+ break;
+ }
+
+ string++;
+ }
+
+ /* Always return the value that has been accumulated */
+
+ *return_value_ptr = accumulated_value;
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_convert_hex_string
+ *
+ * PARAMETERS: string - Null terminated input string
+ * return_value_ptr - Where the converted value is returned
+ *
+ * RETURN: Status and 64-bit converted integer
+ *
+ * DESCRIPTION: Performs a base 16 conversion of the input string to an
+ * integer value, either 32 or 64 bits.
+ *
+ * NOTE: Maximum 64-bit unsigned hex value is 0xFFFFFFFFFFFFFFFF
+ * Maximum 32-bit unsigned hex value is 0xFFFFFFFF
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_convert_hex_string(char *string, u64 *return_value_ptr)
+{
+ u64 accumulated_value = 0;
+ acpi_status status = AE_OK;
+
+ /* Convert each ASCII byte in the input string */
+
+ while (*string) {
+
+ /* Must be ASCII A-F, a-f, or 0-9, otherwise terminate with no error */
+
+ if (!isxdigit(*string)) {
+ break;
+ }
+
+ /* Convert and insert this hex digit into the accumulator */
+
+ status = acpi_ut_insert_digit(&accumulated_value, 16, *string);
+ if (ACPI_FAILURE(status)) {
+ status = AE_HEX_OVERFLOW;
+ break;
+ }
+
+ string++;
+ }
+
+ /* Always return the value that has been accumulated */
+
+ *return_value_ptr = accumulated_value;
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_remove_leading_zeros
+ *
+ * PARAMETERS: string - Pointer to input ASCII string
+ *
+ * RETURN: Next character after any leading zeros. This character may be
+ * used by the caller to detect end-of-string.
+ *
+ * DESCRIPTION: Remove any leading zeros in the input string. Return the
+ * next character after the final ASCII zero to enable the caller
+ * to check for the end of the string (NULL terminator).
+ *
+ ******************************************************************************/
+
+char acpi_ut_remove_leading_zeros(char **string)
+{
+
+ while (**string == ACPI_ASCII_ZERO) {
+ *string += 1;
+ }
+
+ return (**string);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_remove_whitespace
+ *
+ * PARAMETERS: string - Pointer to input ASCII string
+ *
+ * RETURN: Next character after any whitespace. This character may be
+ * used by the caller to detect end-of-string.
+ *
+ * DESCRIPTION: Remove any leading whitespace in the input string. Return the
+ * next character after the final ASCII zero to enable the caller
+ * to check for the end of the string (NULL terminator).
+ *
+ ******************************************************************************/
+
+char acpi_ut_remove_whitespace(char **string)
+{
+
+ while (isspace((u8)**string)) {
+ *string += 1;
+ }
+
+ return (**string);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_detect_hex_prefix
+ *
+ * PARAMETERS: string - Pointer to input ASCII string
+ *
+ * RETURN: TRUE if a "0x" prefix was found at the start of the string
+ *
+ * DESCRIPTION: Detect and remove a hex "0x" prefix
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_detect_hex_prefix(char **string)
+{
+
+ if ((**string == ACPI_ASCII_ZERO) &&
+ (tolower((int)*(*string + 1)) == 'x')) {
+ *string += 2; /* Go past the leading 0x */
+ return (TRUE);
+ }
+
+ return (FALSE); /* Not a hex string */
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_detect_octal_prefix
+ *
+ * PARAMETERS: string - Pointer to input ASCII string
+ *
+ * RETURN: True if an octal "0" prefix was found at the start of the
+ * string
+ *
+ * DESCRIPTION: Detect and remove an octal prefix (zero)
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_detect_octal_prefix(char **string)
+{
+
+ if (**string == ACPI_ASCII_ZERO) {
+ *string += 1; /* Go past the leading 0 */
+ return (TRUE);
+ }
+
+ return (FALSE); /* Not an octal string */
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_insert_digit
+ *
+ * PARAMETERS: accumulated_value - Current value of the integer value
+ * accumulator. The new value is
+ * returned here.
+ * base - Radix, either 8/10/16
+ * ascii_digit - ASCII single digit to be inserted
+ *
+ * RETURN: Status and result of the convert/insert operation. The only
+ * possible returned exception code is numeric overflow of
+ * either the multiply or add conversion operations.
+ *
+ * DESCRIPTION: Generic conversion and insertion function for all bases:
+ *
+ * 1) Multiply the current accumulated/converted value by the
+ * base in order to make room for the new character.
+ *
+ * 2) Convert the new character to binary and add it to the
+ * current accumulated value.
+ *
+ * Note: The only possible exception indicates an integer
+ * overflow (AE_NUMERIC_OVERFLOW)
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_insert_digit(u64 *accumulated_value, u32 base, int ascii_digit)
+{
+ acpi_status status;
+ u64 product;
+
+ /* Make room in the accumulated value for the incoming digit */
+
+ status = acpi_ut_strtoul_multiply64(*accumulated_value, base, &product);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /* Add in the new digit, and store the sum to the accumulated value */
+
+ status =
+ acpi_ut_strtoul_add64(product,
+ acpi_ut_ascii_char_to_hex(ascii_digit),
+ accumulated_value);
+
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_strtoul_multiply64
+ *
+ * PARAMETERS: multiplicand - Current accumulated converted integer
+ * multiplier - Base/Radix
+ * out_product - Where the product is returned
+ *
+ * RETURN: Status and 64-bit product
+ *
+ * DESCRIPTION: Multiply two 64-bit values, with checking for 64-bit overflow as
+ * well as 32-bit overflow if necessary (if the current global
+ * integer width is 32).
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_strtoul_multiply64(u64 multiplicand, u64 multiplier, u64 *out_product)
+{
+ u64 val;
+
+ /* Exit if either operand is zero */
+
+ *out_product = 0;
+ if (!multiplicand || !multiplier) {
+ return (AE_OK);
+ }
+
+ /* Check for 64-bit overflow before the actual multiplication */
+
+ acpi_ut_short_divide(ACPI_UINT64_MAX, (u32)multiplier, &val, NULL);
+ if (multiplicand > val) {
+ return (AE_NUMERIC_OVERFLOW);
+ }
+
+ val = multiplicand * multiplier;
+
+ /* Check for 32-bit overflow if necessary */
+
+ if ((acpi_gbl_integer_bit_width == 32) && (val > ACPI_UINT32_MAX)) {
+ return (AE_NUMERIC_OVERFLOW);
+ }
+
+ *out_product = val;
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_strtoul_add64
+ *
+ * PARAMETERS: addend1 - Current accumulated converted integer
+ * addend2 - New hex value/char
+ * out_sum - Where sum is returned (Accumulator)
+ *
+ * RETURN: Status and 64-bit sum
+ *
+ * DESCRIPTION: Add two 64-bit values, with checking for 64-bit overflow as
+ * well as 32-bit overflow if necessary (if the current global
+ * integer width is 32).
+ *
+ ******************************************************************************/
+
+static acpi_status acpi_ut_strtoul_add64(u64 addend1, u64 addend2, u64 *out_sum)
+{
+ u64 sum;
+
+ /* Check for 64-bit overflow before the actual addition */
+
+ if ((addend1 > 0) && (addend2 > (ACPI_UINT64_MAX - addend1))) {
+ return (AE_NUMERIC_OVERFLOW);
+ }
+
+ sum = addend1 + addend2;
+
+ /* Check for 32-bit overflow if necessary */
+
+ if ((acpi_gbl_integer_bit_width == 32) && (sum > ACPI_UINT32_MAX)) {
+ return (AE_NUMERIC_OVERFLOW);
+ }
+
+ *out_sum = sum;
+ return (AE_OK);
+}
/*******************************************************************************
*
- * Module Name: utstrtoul64 - string to 64-bit integer support
+ * Module Name: utstrtoul64 - String-to-integer conversion support for both
+ * 64-bit and 32-bit integers
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
-/*******************************************************************************
- *
- * The functions in this module satisfy the need for 64-bit string-to-integer
- * conversions on both 32-bit and 64-bit platforms.
- *
- ******************************************************************************/
-
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utstrtoul64")
-/* Local prototypes */
-static u64 acpi_ut_strtoul_base10(char *string, u32 flags);
-
-static u64 acpi_ut_strtoul_base16(char *string, u32 flags);
-
/*******************************************************************************
*
- * String conversion rules as written in the ACPI specification. The error
- * conditions and behavior are different depending on the type of conversion.
- *
- *
- * Implicit data type conversion: string-to-integer
- * --------------------------------------------------
- *
- * Base is always 16. This is the ACPI_STRTOUL_BASE16 case.
- *
- * Example:
- * Add ("BA98", Arg0, Local0)
- *
- * The integer is initialized to the value zero.
- * The ASCII string is interpreted as a hexadecimal constant.
+ * This module contains the top-level string to 64/32-bit unsigned integer
+ * conversion functions:
*
- * 1) A "0x" prefix is not allowed. However, ACPICA allows this for
- * compatibility with previous ACPICA. (NO ERROR)
+ * 1) A standard strtoul() function that supports 64-bit integers, base
+ * 8/10/16, with integer overflow support. This is used mainly by the
+ * iASL compiler, which implements tighter constraints on integer
+ * constants than the runtime (interpreter) integer-to-string conversions.
+ * 2) Runtime "Explicit conversion" as defined in the ACPI specification.
+ * 3) Runtime "Implicit conversion" as defined in the ACPI specification.
*
- * 2) Terminates when the size of an integer is reached (32 or 64 bits).
- * (NO ERROR)
+ * Current users of this module:
*
- * 3) The first non-hex character terminates the conversion without error.
- * (NO ERROR)
- *
- * 4) Conversion of a null (zero-length) string to an integer is not
- * allowed. However, ACPICA allows this for compatibility with previous
- * ACPICA. This conversion returns the value 0. (NO ERROR)
- *
- *
- * Explicit data type conversion: to_integer() with string operand
- * ---------------------------------------------------------------
- *
- * Base is either 10 (default) or 16 (with 0x prefix)
- *
- * Examples:
- * to_integer ("1000")
- * to_integer ("0xABCD")
- *
- * 1) Can be (must be) either a decimal or hexadecimal numeric string.
- * A hex value must be prefixed by "0x" or it is interpreted as a decimal.
+ * iASL - Preprocessor (constants and math expressions)
+ * iASL - Main parser, conversion of constants to integers
+ * iASL - Data Table Compiler parser (constants and math expressions)
+ * interpreter - Implicit and explicit conversions, GPE method names
+ * interpreter - Repair code for return values from predefined names
+ * debugger - Command line input string conversion
+ * acpi_dump - ACPI table physical addresses
+ * acpi_exec - Support for namespace overrides
*
- * 2) The value must not exceed the maximum of an integer value. ACPI spec
- * states the behavior is "unpredictable", so ACPICA matches the behavior
- * of the implicit conversion case.(NO ERROR)
+ * Notes concerning users of these interfaces:
*
- * 3) Behavior on the first non-hex character is not specified by the ACPI
- * spec, so ACPICA matches the behavior of the implicit conversion case
- * and terminates. (NO ERROR)
+ * acpi_gbl_integer_byte_width is used to set the 32/64 bit limit for explicit
+ * and implicit conversions. This global must be set to the proper width.
+ * For the core ACPICA code, the width depends on the DSDT version. For the
+ * acpi_ut_strtoul64 interface, all conversions are 64 bits. This interface is
+ * used primarily for iASL, where the default width is 64 bits for all parsers,
+ * but error checking is performed later to flag cases where a 64-bit constant
+ * is wrongly defined in a 32-bit DSDT/SSDT.
*
- * 4) A null (zero-length) string is illegal.
- * However, ACPICA allows this for compatibility with previous ACPICA.
- * This conversion returns the value 0. (NO ERROR)
+ * In ACPI, the only place where octal numbers are supported is within
+ * the ASL language itself. This is implemented via the main acpi_ut_strtoul64
+ * interface. According the ACPI specification, there is no ACPI runtime
+ * support (explicit/implicit) for octal string conversions.
*
******************************************************************************/
-
/*******************************************************************************
*
* FUNCTION: acpi_ut_strtoul64
*
- * PARAMETERS: string - Null terminated input string
- * flags - Conversion info, see below
+ * PARAMETERS: string - Null terminated input string,
+ * must be a valid pointer
* return_value - Where the converted integer is
- * returned
- *
- * RETURN: Status and Converted value
+ * returned. Must be a valid pointer
*
- * DESCRIPTION: Convert a string into an unsigned value. Performs either a
- * 32-bit or 64-bit conversion, depending on the input integer
- * size in Flags (often the current mode of the interpreter).
+ * RETURN: Status and converted integer. Returns an exception on a
+ * 64-bit numeric overflow
*
- * Values for Flags:
- * ACPI_STRTOUL_32BIT - Max integer value is 32 bits
- * ACPI_STRTOUL_64BIT - Max integer value is 64 bits
- * ACPI_STRTOUL_BASE16 - Input string is hexadecimal. Default
- * is 10/16 based on string prefix (0x).
+ * DESCRIPTION: Convert a string into an unsigned integer. Always performs a
+ * full 64-bit conversion, regardless of the current global
+ * integer width. Supports Decimal, Hex, and Octal strings.
*
- * NOTES:
- * Negative numbers are not supported, as they are not supported by ACPI.
+ * Current users of this function:
*
- * Supports only base 16 or base 10 strings/values. Does not
- * support Octal strings, as these are not supported by ACPI.
- *
- * Current users of this support:
- *
- * interpreter - Implicit and explicit conversions, GPE method names
- * debugger - Command line input string conversion
- * iASL - Main parser, conversion of constants to integers
- * iASL - Data Table Compiler parser (constant math expressions)
- * iASL - Preprocessor (constant math expressions)
- * acpi_dump - Input table addresses
- * acpi_exec - Testing of the acpi_ut_strtoul64 function
- *
- * Note concerning callers:
- * acpi_gbl_integer_byte_width can be used to set the 32/64 limit. If used,
- * this global should be set to the proper width. For the core ACPICA code,
- * this width depends on the DSDT version. For iASL, the default byte
- * width is always 8 for the parser, but error checking is performed later
- * to flag cases where a 64-bit constant is defined in a 32-bit DSDT/SSDT.
+ * iASL - Preprocessor (constants and math expressions)
+ * iASL - Main ASL parser, conversion of ASL constants to integers
+ * iASL - Data Table Compiler parser (constants and math expressions)
+ * interpreter - Repair code for return values from predefined names
+ * acpi_dump - ACPI table physical addresses
+ * acpi_exec - Support for namespace overrides
*
******************************************************************************/
-
-acpi_status acpi_ut_strtoul64(char *string, u32 flags, u64 *return_value)
+acpi_status acpi_ut_strtoul64(char *string, u64 *return_value)
{
acpi_status status = AE_OK;
- u32 base;
+ u8 original_bit_width;
+ u32 base = 10; /* Default is decimal */
ACPI_FUNCTION_TRACE_STR(ut_strtoul64, string);
- /* Parameter validation */
-
- if (!string || !return_value) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
*return_value = 0;
- /* Check for zero-length string, returns 0 */
+ /* A NULL return string returns a value of zero */
if (*string == 0) {
return_ACPI_STATUS(AE_OK);
}
- /* Skip over any white space at start of string */
-
- while (isspace((int)*string)) {
- string++;
- }
-
- /* End of string? return 0 */
-
- if (*string == 0) {
+ if (!acpi_ut_remove_whitespace(&string)) {
return_ACPI_STATUS(AE_OK);
}
/*
- * 1) The "0x" prefix indicates base 16. Per the ACPI specification,
- * the "0x" prefix is only allowed for implicit (non-strict) conversions.
- * However, we always allow it for compatibility with older ACPICA.
+ * 1) Check for a hex constant. A "0x" prefix indicates base 16.
*/
- if ((*string == ACPI_ASCII_ZERO) &&
- (tolower((int)*(string + 1)) == 'x')) {
- string += 2; /* Go past the 0x */
- if (*string == 0) {
- return_ACPI_STATUS(AE_OK); /* Return value 0 */
- }
-
+ if (acpi_ut_detect_hex_prefix(&string)) {
base = 16;
}
- /* 2) Force to base 16 (implicit conversion case) */
-
- else if (flags & ACPI_STRTOUL_BASE16) {
- base = 16;
+ /*
+ * 2) Check for an octal constant, defined to be a leading zero
+ * followed by sequence of octal digits (0-7)
+ */
+ else if (acpi_ut_detect_octal_prefix(&string)) {
+ base = 8;
}
- /* 3) Default fallback is to Base 10 */
-
- else {
- base = 10;
+ if (!acpi_ut_remove_leading_zeros(&string)) {
+ return_ACPI_STATUS(AE_OK); /* Return value 0 */
}
- /* Skip all leading zeros */
+ /*
+ * Force a full 64-bit conversion. The caller (usually iASL) must
+ * check for a 32-bit overflow later as necessary (If current mode
+ * is 32-bit, meaning a 32-bit DSDT).
+ */
+ original_bit_width = acpi_gbl_integer_bit_width;
+ acpi_gbl_integer_bit_width = 64;
- while (*string == ACPI_ASCII_ZERO) {
- string++;
- if (*string == 0) {
- return_ACPI_STATUS(AE_OK); /* Return value 0 */
- }
+ /*
+ * Perform the base 8, 10, or 16 conversion. A 64-bit numeric overflow
+ * will return an exception (to allow iASL to flag the statement).
+ */
+ switch (base) {
+ case 8:
+ status = acpi_ut_convert_octal_string(string, return_value);
+ break;
+
+ case 10:
+ status = acpi_ut_convert_decimal_string(string, return_value);
+ break;
+
+ case 16:
+ default:
+ status = acpi_ut_convert_hex_string(string, return_value);
+ break;
}
- /* Perform the base 16 or 10 conversion */
-
- if (base == 16) {
- *return_value = acpi_ut_strtoul_base16(string, flags);
- } else {
- *return_value = acpi_ut_strtoul_base10(string, flags);
- }
+ /* Only possible exception from above is a 64-bit overflow */
+ acpi_gbl_integer_bit_width = original_bit_width;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
- * FUNCTION: acpi_ut_strtoul_base10
+ * FUNCTION: acpi_ut_implicit_strtoul64
+ *
+ * PARAMETERS: string - Null terminated input string,
+ * must be a valid pointer
+ *
+ * RETURN: Converted integer
+ *
+ * DESCRIPTION: Perform a 64-bit conversion with restrictions placed upon
+ * an "implicit conversion" by the ACPI specification. Used by
+ * many ASL operators that require an integer operand, and support
+ * an automatic (implicit) conversion from a string operand
+ * to the final integer operand. The major restriction is that
+ * only hex strings are supported.
+ *
+ * -----------------------------------------------------------------------------
+ *
+ * Base is always 16, either with or without the 0x prefix. Decimal and
+ * Octal strings are not supported, as per the ACPI specification.
+ *
+ * Examples (both are hex values):
+ * Add ("BA98", Arg0, Local0)
+ * Subtract ("0x12345678", Arg1, Local1)
+ *
+ * Conversion rules as extracted from the ACPI specification:
+ *
+ * The converted integer is initialized to the value zero.
+ * The ASCII string is always interpreted as a hexadecimal constant.
+ *
+ * 1) According to the ACPI specification, a "0x" prefix is not allowed.
+ * However, ACPICA allows this as an ACPI extension on general
+ * principle. (NO ERROR)
+ *
+ * 2) The conversion terminates when the size of an integer is reached
+ * (32 or 64 bits). There are no numeric overflow conditions. (NO ERROR)
+ *
+ * 3) The first non-hex character terminates the conversion and returns
+ * the current accumulated value of the converted integer (NO ERROR).
*
- * PARAMETERS: string - Null terminated input string
- * flags - Conversion info
+ * 4) Conversion of a null (zero-length) string to an integer is
+ * technically not allowed. However, ACPICA allows this as an ACPI
+ * extension. The conversion returns the value 0. (NO ERROR)
*
- * RETURN: 64-bit converted integer
+ * NOTE: There are no error conditions returned by this function. At
+ * the minimum, a value of zero is returned.
*
- * DESCRIPTION: Performs a base 10 conversion of the input string to an
- * integer value, either 32 or 64 bits.
- * Note: String must be valid and non-null.
+ * Current users of this function:
+ *
+ * interpreter - All runtime implicit conversions, as per ACPI specification
+ * iASL - Data Table Compiler parser (constants and math expressions)
*
******************************************************************************/
-static u64 acpi_ut_strtoul_base10(char *string, u32 flags)
+u64 acpi_ut_implicit_strtoul64(char *string)
{
- int ascii_digit;
- u64 next_value;
- u64 return_value = 0;
-
- /* Main loop: convert each ASCII byte in the input string */
-
- while (*string) {
- ascii_digit = *string;
- if (!isdigit(ascii_digit)) {
-
- /* Not ASCII 0-9, terminate */
-
- goto exit;
- }
-
- /* Convert and insert (add) the decimal digit */
+ u64 converted_integer = 0;
- acpi_ut_short_multiply(return_value, 10, &next_value);
- next_value += (ascii_digit - ACPI_ASCII_ZERO);
+ ACPI_FUNCTION_TRACE_STR(ut_implicit_strtoul64, string);
- /* Check for overflow (32 or 64 bit) - return current converted value */
+ if (!acpi_ut_remove_whitespace(&string)) {
+ return_VALUE(0);
+ }
- if (((flags & ACPI_STRTOUL_32BIT) && (next_value > ACPI_UINT32_MAX)) || (next_value < return_value)) { /* 64-bit overflow case */
- goto exit;
- }
+ /*
+ * Per the ACPI specification, only hexadecimal is supported for
+ * implicit conversions, and the "0x" prefix is "not allowed".
+ * However, allow a "0x" prefix as an ACPI extension.
+ */
+ acpi_ut_detect_hex_prefix(&string);
- return_value = next_value;
- string++;
+ if (!acpi_ut_remove_leading_zeros(&string)) {
+ return_VALUE(0);
}
-exit:
- return (return_value);
+ /*
+ * Ignore overflow as per the ACPI specification. This is implemented by
+ * ignoring the return status from the conversion function called below.
+ * On overflow, the input string is simply truncated.
+ */
+ acpi_ut_convert_hex_string(string, &converted_integer);
+ return_VALUE(converted_integer);
}
/*******************************************************************************
*
- * FUNCTION: acpi_ut_strtoul_base16
+ * FUNCTION: acpi_ut_explicit_strtoul64
+ *
+ * PARAMETERS: string - Null terminated input string,
+ * must be a valid pointer
*
- * PARAMETERS: string - Null terminated input string
- * flags - conversion info
+ * RETURN: Converted integer
*
- * RETURN: 64-bit converted integer
+ * DESCRIPTION: Perform a 64-bit conversion with the restrictions placed upon
+ * an "explicit conversion" by the ACPI specification. The
+ * main restriction is that only hex and decimal are supported.
*
- * DESCRIPTION: Performs a base 16 conversion of the input string to an
- * integer value, either 32 or 64 bits.
- * Note: String must be valid and non-null.
+ * -----------------------------------------------------------------------------
+ *
+ * Base is either 10 (default) or 16 (with 0x prefix). Octal (base 8) strings
+ * are not supported, as per the ACPI specification.
+ *
+ * Examples:
+ * to_integer ("1000") Decimal
+ * to_integer ("0xABCD") Hex
+ *
+ * Conversion rules as extracted from the ACPI specification:
+ *
+ * 1) The input string is either a decimal or hexadecimal numeric string.
+ * A hex value must be prefixed by "0x" or it is interpreted as decimal.
+ *
+ * 2) The value must not exceed the maximum of an integer value
+ * (32 or 64 bits). The ACPI specification states the behavior is
+ * "unpredictable", so ACPICA matches the behavior of the implicit
+ * conversion case. There are no numeric overflow conditions. (NO ERROR)
+ *
+ * 3) Behavior on the first non-hex character is not defined by the ACPI
+ * specification (for the to_integer operator), so ACPICA matches the
+ * behavior of the implicit conversion case. It terminates the
+ * conversion and returns the current accumulated value of the converted
+ * integer. (NO ERROR)
+ *
+ * 4) Conversion of a null (zero-length) string to an integer is
+ * technically not allowed. However, ACPICA allows this as an ACPI
+ * extension. The conversion returns the value 0. (NO ERROR)
+ *
+ * NOTE: There are no error conditions returned by this function. At the
+ * minimum, a value of zero is returned.
+ *
+ * Current users of this function:
+ *
+ * interpreter - Runtime ASL to_integer operator, as per the ACPI specification
*
******************************************************************************/
-static u64 acpi_ut_strtoul_base16(char *string, u32 flags)
+u64 acpi_ut_explicit_strtoul64(char *string)
{
- int ascii_digit;
- u32 valid_digits = 1;
- u64 return_value = 0;
-
- /* Main loop: convert each ASCII byte in the input string */
+ u64 converted_integer = 0;
+ u32 base = 10; /* Default is decimal */
- while (*string) {
+ ACPI_FUNCTION_TRACE_STR(ut_explicit_strtoul64, string);
- /* Check for overflow (32 or 64 bit) - return current converted value */
-
- if ((valid_digits > 16) ||
- ((valid_digits > 8) && (flags & ACPI_STRTOUL_32BIT))) {
- goto exit;
- }
-
- ascii_digit = *string;
- if (!isxdigit(ascii_digit)) {
-
- /* Not Hex ASCII A-F, a-f, or 0-9, terminate */
-
- goto exit;
- }
+ if (!acpi_ut_remove_whitespace(&string)) {
+ return_VALUE(0);
+ }
- /* Convert and insert the hex digit */
+ /*
+ * Only Hex and Decimal are supported, as per the ACPI specification.
+ * A "0x" prefix indicates hex; otherwise decimal is assumed.
+ */
+ if (acpi_ut_detect_hex_prefix(&string)) {
+ base = 16;
+ }
- acpi_ut_short_shift_left(return_value, 4, &return_value);
- return_value |= acpi_ut_ascii_char_to_hex(ascii_digit);
+ if (!acpi_ut_remove_leading_zeros(&string)) {
+ return_VALUE(0);
+ }
- string++;
- valid_digits++;
+ /*
+ * Ignore overflow as per the ACPI specification. This is implemented by
+ * ignoring the return status from the conversion functions called below.
+ * On overflow, the input string is simply truncated.
+ */
+ switch (base) {
+ case 10:
+ default:
+ acpi_ut_convert_decimal_string(string, &converted_integer);
+ break;
+
+ case 16:
+ acpi_ut_convert_hex_string(string, &converted_integer);
+ break;
}
-exit:
- return (return_value);
+ return_VALUE(converted_integer);
}
#define AE_NOT_CONFIGURED EXCEP_ENV (0x001C)
#define AE_ACCESS EXCEP_ENV (0x001D)
#define AE_IO_ERROR EXCEP_ENV (0x001E)
+#define AE_NUMERIC_OVERFLOW EXCEP_ENV (0x001F)
+#define AE_HEX_OVERFLOW EXCEP_ENV (0x0020)
+#define AE_DECIMAL_OVERFLOW EXCEP_ENV (0x0021)
+#define AE_OCTAL_OVERFLOW EXCEP_ENV (0x0022)
-#define AE_CODE_ENV_MAX 0x001E
+#define AE_CODE_ENV_MAX 0x0022
/*
* Programmer exceptions
EXCEP_TXT("AE_NOT_CONFIGURED",
"The interface is not part of the current subsystem configuration"),
EXCEP_TXT("AE_ACCESS", "Permission denied for the requested operation"),
- EXCEP_TXT("AE_IO_ERROR", "An I/O error occurred")
+ EXCEP_TXT("AE_IO_ERROR", "An I/O error occurred"),
+ EXCEP_TXT("AE_NUMERIC_OVERFLOW",
+ "Overflow during string-to-integer conversion"),
+ EXCEP_TXT("AE_HEX_OVERFLOW",
+ "Overflow during ASCII hex-to-binary conversion"),
+ EXCEP_TXT("AE_DECIMAL_OVERFLOW",
+ "Overflow during ASCII decimal-to-binary conversion"),
+ EXCEP_TXT("AE_OCTAL_OVERFLOW",
+ "Overflow during ASCII octal-to-binary conversion")
};
static const struct acpi_exception_info acpi_gbl_exception_names_pgm[] = {
/* Current ACPICA subsystem version in YYYYMMDD format */
-#define ACPI_CA_VERSION 0x20170728
+#define ACPI_CA_VERSION 0x20170831
#include <acpi/acconfig.h>
#include <acpi/actypes.h>
#define ACPI_SIG_HEST "HEST" /* Hardware Error Source Table */
#define ACPI_SIG_MADT "APIC" /* Multiple APIC Description Table */
#define ACPI_SIG_MSCT "MSCT" /* Maximum System Characteristics Table */
+#define ACPI_SIG_PDTT "PDTT" /* Processor Debug Trigger Table */
#define ACPI_SIG_PPTT "PPTT" /* Processor Properties Topology Table */
#define ACPI_SIG_SBST "SBST" /* Smart Battery Specification Table */
#define ACPI_SIG_SLIT "SLIT" /* System Locality Distance Information Table */
u64 hint_address[1]; /* Variable length */
};
+/*******************************************************************************
+ *
+ * PDTT - Processor Debug Trigger Table (ACPI 6.2)
+ * Version 0
+ *
+ ******************************************************************************/
+
+struct acpi_table_pdtt {
+ struct acpi_table_header header; /* Common ACPI table header */
+ u8 trigger_count;
+ u8 reserved[3];
+ u32 array_offset;
+};
+
+/*
+ * PDTT Communication Channel Identifier Structure.
+ * The number of these structures is defined by trigger_count above,
+ * starting at array_offset.
+ */
+struct acpi_pdtt_channel {
+ u16 sub_channel_id;
+};
+
+/* Mask and Flags for above */
+
+#define ACPI_PDTT_SUBCHANNEL_ID_MASK 0x00FF
+#define ACPI_PDTT_RUNTIME_TRIGGER (1<<8)
+#define ACPI_PPTT_WAIT_COMPLETION (1<<9)
+
/*******************************************************************************
*
* PPTT - Processor Properties Topology Table (ACPI 6.2)
utnonansi.o\
utprint.o\
utstring.o\
+ utstrsuppt.o\
utstrtoul64.o\
utxferror.o\
oslinuxtbl.o\
/* Convert argument to an integer physical address */
- status = acpi_ut_strtoul64(ascii_address, ACPI_STRTOUL_64BIT,
- &long_address);
+ status = acpi_ut_strtoul64(ascii_address, &long_address);
if (ACPI_FAILURE(status)) {
fprintf(stderr, "%s: Could not convert to a physical address\n",
ascii_address);
case 'r': /* Dump tables from specified RSDP */
status =
- acpi_ut_strtoul64(acpi_gbl_optarg,
- ACPI_STRTOUL_64BIT,
- &gbl_rsdp_base);
+ acpi_ut_strtoul64(acpi_gbl_optarg, &gbl_rsdp_base);
if (ACPI_FAILURE(status)) {
fprintf(stderr,
"%s: Could not convert to a physical address\n",
projects / mirror_ubuntu-bionic-kernel.git / commitdiff