diff options
| author | Robert Moore <Robert.Moore@intel.com> | 2012-10-12 12:08:39 -0700 |
|---|---|---|
| committer | Robert Moore <Robert.Moore@intel.com> | 2012-10-12 12:08:39 -0700 |
| commit | 80328e4bf7afab135d6373924372a9019f3043bd (patch) | |
| tree | 66ed0eabcefafd55beee8901a693724f64c3d6e6 | |
| parent | ff56b2ded95526f6d74fa280d1982769e44d41b1 (diff) | |
| download | acpica-80328e4bf7afab135d6373924372a9019f3043bd.tar.gz | |
Add ACPI_MOVE_NAME macro to optimize 4-byte ACPI_NAME copies.
Resolves to a 32-bit move for the normal case, strncpy on machines
that do not support misaligned transfers.
| -rw-r--r-- | source/include/actypes.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/source/include/actypes.h b/source/include/actypes.h index b456a3c8e..a4f731f8d 100644 --- a/source/include/actypes.h +++ b/source/include/actypes.h @@ -526,10 +526,14 @@ typedef UINT64 ACPI_INTEGER; #define ACPI_PHYSADDR_TO_PTR(i) ACPI_TO_POINTER(i) #define ACPI_PTR_TO_PHYSADDR(i) ACPI_TO_INTEGER(i) +/* Optimizations for 4-character (32-bit) ACPI_NAME manipulation */ + #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED #define ACPI_COMPARE_NAME(a,b) (*ACPI_CAST_PTR (UINT32, (a)) == *ACPI_CAST_PTR (UINT32, (b))) +#define ACPI_MOVE_NAME(dest,src) (*ACPI_CAST_PTR (UINT32, (dest)) = *ACPI_CAST_PTR (UINT32, (src))) #else #define ACPI_COMPARE_NAME(a,b) (!ACPI_STRNCMP (ACPI_CAST_PTR (char, (a)), ACPI_CAST_PTR (char, (b)), ACPI_NAME_SIZE)) +#define ACPI_MOVE_NAME(dest,src) (ACPI_STRNCPY (ACPI_CAST_PTR (char, (dest)), ACPI_CAST_PTR (char, (src)), ACPI_NAME_SIZE)) #endif |