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authorBob Moore <robert.moore@intel.com>2005-12-16 17:05:00 -0500
committerLen Brown <len.brown@intel.com>2005-12-28 02:54:59 -0500
commitdefba1d8f233c0d5cf3e1ea6aeb898eca7231860 (patch)
treecd8b1b84da8d8a52ad0d44107daaeeee0a0b65f4 /include/acpi/acmacros.h
parentcb654695f6b912cef7cb3271665b6ee0d416124c (diff)
[ACPI] ACPICA 20051216
Implemented optional support to allow unresolved names within ASL Package objects. A null object is inserted in the package when a named reference cannot be located in the current namespace. Enabled via the interpreter slack flag which Linux has enabled by default (acpi=strict to disable slack). This should eliminate AE_NOT_FOUND exceptions seen on machines that contain such code. Implemented an optimization to the initialization sequence that can improve boot time. During ACPI device initialization, the _STA method is now run if and only if the _INI method exists. The _STA method is used to determine if the device is present; An _INI can only be run if _STA returns present, but it is a waste of time to run the _STA method if the _INI does not exist. (Prototype and assistance from Dong Wei) Implemented use of the C99 uintptr_t for the pointer casting macros if it is available in the current compiler. Otherwise, the default (void *) cast is used as before. Fixed some possible memory leaks found within the execution path of the Break, Continue, If, and CreateField operators. (Valery Podrezov) Fixed a problem introduced in the 20051202 release where an exception is generated during method execution if a control method attempts to declare another method. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/acpi/acmacros.h')
-rw-r--r--include/acpi/acmacros.h24
1 files changed, 13 insertions, 11 deletions
diff --git a/include/acpi/acmacros.h b/include/acpi/acmacros.h
index 65a1a5c1a689..0fa8f72dbace 100644
--- a/include/acpi/acmacros.h
+++ b/include/acpi/acmacros.h
@@ -60,7 +60,7 @@
/*
* For 16-bit addresses, we have to assume that the upper 32 bits
- * are zero.
+ * (out of 64) are zero.
*/
#define ACPI_LODWORD(l) ((u32)(l))
#define ACPI_HIDWORD(l) ((u32)(0))
@@ -104,8 +104,9 @@
#define ACPI_FORMAT_UINT64(i) ACPI_HIDWORD(i),ACPI_LODWORD(i)
/*
- * 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
+ * Extract data using a pointer. Any more than a byte and we
+ * get into potential aligment issues -- see the STORE macros below.
+ * Use with care.
*/
#define ACPI_GET8(ptr) *ACPI_CAST_PTR (u8, ptr)
#define ACPI_GET16(ptr) *ACPI_CAST_PTR (u16, ptr)
@@ -116,16 +117,17 @@
#define ACPI_SET32(ptr) *ACPI_CAST_PTR (u32, ptr)
#define ACPI_SET64(ptr) *ACPI_CAST_PTR (u64, ptr)
-/* Pointer manipulation */
-
-#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 manipulation
+ */
+#define ACPI_CAST_PTR(t, p) ((t *) (acpi_uintptr_t) (p))
+#define ACPI_CAST_INDIRECT_PTR(t, p) ((t **) (acpi_uintptr_t) (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) (ACPI_CAST_PTR (u8,(a)) - ACPI_CAST_PTR (u8,(b)))
/* Pointer/Integer type conversions */
-#define ACPI_TO_POINTER(i) ACPI_ADD_PTR (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)
@@ -133,7 +135,7 @@
#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)
-#define ACPI_PTR_TO_PHYSADDR(i) (u32) (char *)(i)
+#define ACPI_PTR_TO_PHYSADDR(i) (u32) ACPI_CAST_PTR (u8,(i))
#else
#define ACPI_PHYSADDR_TO_PTR(i) ACPI_TO_POINTER(i)
#define ACPI_PTR_TO_PHYSADDR(i) ACPI_TO_INTEGER(i)