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document arithmetics instructions

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This commit is contained in:
macallan 2013-06-12 20:43:21 +00:00
parent 27d0b7b0fa
commit 3a5f3d0384
1 changed files with 10 additions and 9 deletions
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19
sys/arch/sparc/dev/sxreg.h
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@ -1,4 +1,4 @@
/* $NetBSD: sxreg.h,v 1.8 2013/06/12 04:23:46 macallan Exp $ */
/* $NetBSD: sxreg.h,v 1.9 2013/06/12 20:43:21 macallan Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@ -253,14 +253,15 @@
((sa) << 14) | ((d) << 7) | (sb))
/* arithmetic group */
#define SX_ADD_V (0x00 << 21)
#define SX_ADD_S (0x01 << 21)
#define SX_ADD_I (0x02 << 21)
#define SX_SUM (0x03 << 21)
#define SX_SUB_V (0x04 << 21)
#define SX_SUB_S (0x05 << 21)
#define SX_SUB_I (0x06 << 21)
#define SX_ABS (0x07 << 21)
#define SX_ADD_V (0x00 << 21) /* vector + vector */
#define SX_ADD_S (0x01 << 21) /* vector + scalar */
#define SX_ADD_I (0x02 << 21) /* vector + immediate */
#define SX_SUM (0x03 << 21) /* sum of vector and scalar */
#define SX_SUB_V (0x04 << 21) /* vector - veector */
#define SX_SUB_S (0x05 << 21) /* vector - scalar */
#define SX_SUB_I (0x06 << 21) /* vector - immediate */
#define SX_ABS (0x07 << 21) /* abs(sb) with sa=R0 */
/* hardware does sa - sb for sb < 0 and sa + sb if sb > 0 */
#define SX_ADDV(sa, sb, d, cnt) (0xa0000000 | ((cnt) << 24) | SX_ADD_V | \
((sa) << 14) | ((d) << 7) | (sb))