From: lkcl <lkcl@web>
Date: Sat, 19 Dec 2020 02:01:25 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: convert-csv-opcode-to-binary~1202
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ad124b728cdbcc0614694f7b5dc3ca5da940e0fd;p=libreriscv.git

---

diff --git a/openpower/sv/sprs.mdwn b/openpower/sv/sprs.mdwn
index 7430f1be3..d5ebd7d93 100644
--- a/openpower/sv/sprs.mdwn
+++ b/openpower/sv/sprs.mdwn
@@ -52,24 +52,23 @@ full context save/restore.  It contains (and permits setting of):
 
 * MVL
 * VL
-* destoffs - the destination element offset of the current parallel
+* dsttoffs - the destination element offset of the current parallel
   instruction being executed
 * srcoffs - for twin-predication, the source element offset as well.
 * SUBVL
-* dsvoffs - the subvector destination element offset of the current
+* svoffs - the subvector element offset of the current
   parallel instruction being executed
 
 The format of the STATE CSR is as follows:
 
 | Field | Name     | Description           |
 | ----- | -------- | --------------------- |
-| 0:6   | maxvl    | |
-| 7:13  |    vl    | |
+| 0:6   | maxvl    | Max Vector Length |
+| 7:13  |    vl    | Vector Length |
 | 14:20 | srcoffs  | |
 | 21:27 | dstoffs  | |
 | 28:29 | subvl    | |
-| 30:31 | dsvoffs  | |
-
+| 30:31 | svoffs   | |
 
 The relationship between SUBVL and the subvl field is:
 
@@ -84,6 +83,5 @@ Notes:
 
 * The entries are truncated to be within range.  Attempts to set VL to
   greater than MAXVL will truncate VL.
-* Both VL and MAXVL are stored offset by one.  0b000000 represents VL=1,
-  0b000001 represents VL=2.  This allows the full range 1 to XLEN instead
-  of 0 to only 63.
+* Setting srcoffs, dstoffs to 64 or greater, or VL or MVL to greater than 64 is reserved and will cause an illegal instruction trap.
+