[ACPI] ACPICA 20051117

Fixed a problem in the AML parser where the method thread
count could be decremented below zero if any errors
occurred during the method parse phase. This should
eliminate AE_AML_METHOD_LIMIT exceptions seen on some
machines. This also fixed a related regression with the
mechanism that detects and corrects methods that cannot
properly handle reentrancy (related to the deployment of
the new OwnerId mechanism.)

Eliminated the pre-parsing of control methods (to detect
errors) during table load. Related to the problem above,
this was causing unwind issues if any errors occurred
during the parse, and it seemed to be overkill. A table
load should not be aborted if there are problems with
any single control method, thus rendering this feature
rather pointless.

Fixed a problem with the new table-driven resource manager
where an internal buffer overflow could occur for small
resource templates.

Implemented a new external interface, acpi_get_vendor_resource()
This interface will find and return a vendor-defined
resource descriptor within a _CRS or _PRS
method via an ACPI 3.0 UUID match. (from Bjorn Helgaas)

Removed the length limit (200) on string objects as
per the upcoming ACPI 3.0A specification. This affects
the following areas of the interpreter: 1) any implicit
conversion of a Buffer to a String, 2) a String object
result of the ASL Concatentate operator, 3) the String
object result of the ASL ToString operator.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 20 insertions, 7 deletions

diff --git a/include/acpi/acmacros.h b/include/acpi/acmacros.h
index e42222c..5b78ff4 100644
--- a/include/acpi/acmacros.h
+++ b/include/acpi/acmacros.h
@@ -107,23 +107,29 @@
  * Extract a byte of data using a pointer.  Any more than a byte and we
  * get into potential aligment issues -- see the STORE macros below
  */
-#define ACPI_GET8(addr)                 (*(u8*)(addr))
+#define ACPI_GET8(ptr)                  *ACPI_CAST_PTR (u8, ptr)
+#define ACPI_GET16(ptr)                 *ACPI_CAST_PTR (u16, ptr)
+#define ACPI_GET32(ptr)                 *ACPI_CAST_PTR (u32, ptr)
+#define ACPI_GET64(ptr)                 *ACPI_CAST_PTR (u64, ptr)
+#define ACPI_SET8(ptr)                  *ACPI_CAST_PTR (u8, ptr)
+#define ACPI_SET16(ptr)                 *ACPI_CAST_PTR (u16, ptr)
+#define ACPI_SET32(ptr)                 *ACPI_CAST_PTR (u32, ptr)
+#define ACPI_SET64(ptr)                 *ACPI_CAST_PTR (u64, ptr)
 
-/* Pointer arithmetic */
+/* Pointer manipulation */
 
-#define ACPI_PTR_ADD(t,a,b)             (t *) (void *)((char *)(a) + (acpi_native_uint)(b))
+#define ACPI_CAST_PTR(t, p)             ((t *)(void *)(p))
+#define ACPI_CAST_INDIRECT_PTR(t, p)    ((t **)(void *)(p))
+#define ACPI_ADD_PTR(t,a,b)             ACPI_CAST_PTR (t, (ACPI_CAST_PTR (u8, (a)) + (acpi_native_uint)(b)))
 #define ACPI_PTR_DIFF(a,b)              (acpi_native_uint) ((char *)(a) - (char *)(b))
 
 /* Pointer/Integer type conversions */
 
-#define ACPI_TO_POINTER(i)              ACPI_PTR_ADD (void, (void *) NULL,(acpi_native_uint)i)
+#define ACPI_TO_POINTER(i)              ACPI_ADD_PTR (void, (void *) NULL,(acpi_native_uint)i)
 #define ACPI_TO_INTEGER(p)              ACPI_PTR_DIFF (p,(void *) NULL)
 #define ACPI_OFFSET(d,f)                (acpi_size) ACPI_PTR_DIFF (&(((d *)0)->f),(void *) NULL)
 #define ACPI_FADT_OFFSET(f)             ACPI_OFFSET (FADT_DESCRIPTOR, f)
 
-#define ACPI_CAST_PTR(t, p)             ((t *)(void *)(p))
-#define ACPI_CAST_INDIRECT_PTR(t, p)    ((t **)(void *)(p))
-
 #if ACPI_MACHINE_WIDTH == 16
 #define ACPI_STORE_POINTER(d,s)         ACPI_MOVE_32_TO_32(d,s)
 #define ACPI_PHYSADDR_TO_PTR(i)         (void *)(i)
@@ -365,6 +371,13 @@
 #define ACPI_REGISTER_PREPARE_BITS(val, pos, mask)      ((val << pos) & mask)
 #define ACPI_REGISTER_INSERT_VALUE(reg, pos, mask, val)  reg = (reg & (~(mask))) | ACPI_REGISTER_PREPARE_BITS(val, pos, mask)
 
+/* Generate a UUID */
+
+#define ACPI_INIT_UUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7)   (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \
+												  (b) & 0xFF, ((b) >> 8) & 0xFF, \
+												  (c) & 0xFF, ((c) >> 8) & 0xFF, \
+												  (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)
+
 /*
  * An struct acpi_namespace_node * can appear in some contexts,
  * where a pointer to an union acpi_operand_object    can also