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Implement these using mux1 and extr.u. I'll update the userland versions

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similarly. Actually, they should be inline on gcc.
This commit is contained in:
Doug Rabson 2001-10-06 08:35:05 +00:00
parent 0f153072be
commit 79b2d7690f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=84579
2 changed files with 7 additions and 14 deletions
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8
sys/libkern/ia64/byte_swap_2.S
View File

@ -39,9 +39,9 @@
*
* Argument is an unsigned 2-byte integer (u_int16_t).
*/
ENTRY(NAME, 1) /* in0 = 0x0123 */
extr.u ret0=in0,8,8 /* ret0 = 0x 01 */
;;
dep ret0=ret0,in0,8,8 /* ret0 = 0x2301 */
ENTRY(NAME, 1)
mux1 r16=in0,@rev
;;
extr.u r8=r16,48,16
br.ret.sptk.few rp
END(NAME)

13
sys/libkern/ia64/byte_swap_4.S
View File

@ -39,16 +39,9 @@
*
* Argument is an unsigned 4-byte integer (u_int32_t).
*/
ENTRY(NAME, 1) /* in0 = 0x01234567 */
extr.u r16=in0,0,8 /* r16 = 0x 67 */
extr.u r17=in0,8,8 /* r17 = 0x 45 */
extr.u r18=in0,16,8 /* r18 = 0x 23 */
extr.u ret0=in0,24,8 /* ret0 = 0x 01 */
ENTRY(NAME, 1)
mux1 r16=in0,@rev
;;
dep ret0=ret0,r16,24,8 /* ret0 = 0x67 01 */
;;
dep ret0=ret0,r17,16,8 /* ret0 = 0x6745 01 */
;;
dep ret0=ret0,r16,8,8 /* ret0 = 0x67452301 */
extr.u r8=r16,32,32
br.ret.sptk.few rp
END(NAME)