summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorDenys Vlasenko2015-02-02 16:07:07 +0100
committerDenys Vlasenko2015-02-02 16:07:07 +0100
commitf7f70bf1b3025550ea4ad8d13d977b846a868a06 (patch)
tree2c18d81eab7e897d982a18667fdafa062a93e033 /include
parent7f7ade1964f61172125d9f4fe92f0b07ce8bc7a4 (diff)
downloadbusybox-f7f70bf1b3025550ea4ad8d13d977b846a868a06.zip
busybox-f7f70bf1b3025550ea4ad8d13d977b846a868a06.tar.gz
gzip: speed up and shrink put_16bit()
function old new delta put_16bit 104 98 -6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'include')
-rw-r--r--include/platform.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/platform.h b/include/platform.h
index 0b0fce1..df95945 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -217,6 +217,7 @@ typedef uint64_t bb__aliased_uint64_t FIX_ALIASING;
* a lvalue. This makes it more likely to not swap them by mistake
*/
#if defined(i386) || defined(__x86_64__) || defined(__powerpc__)
+# define BB_UNALIGNED_MEMACCESS_OK 1
# define move_from_unaligned_int(v, intp) ((v) = *(bb__aliased_int*)(intp))
# define move_from_unaligned_long(v, longp) ((v) = *(bb__aliased_long*)(longp))
# define move_from_unaligned16(v, u16p) ((v) = *(bb__aliased_uint16_t*)(u16p))
@@ -225,6 +226,7 @@ typedef uint64_t bb__aliased_uint64_t FIX_ALIASING;
# define move_to_unaligned32(u32p, v) (*(bb__aliased_uint32_t*)(u32p) = (v))
/* #elif ... - add your favorite arch today! */
#else
+# define BB_UNALIGNED_MEMACCESS_OK 0
/* performs reasonably well (gcc usually inlines memcpy here) */
# define move_from_unaligned_int(v, intp) (memcpy(&(v), (intp), sizeof(int)))
# define move_from_unaligned_long(v, longp) (memcpy(&(v), (longp), sizeof(long)))