|
Message
From: OpenCores CVS Agent<cvs@o...>
Date: Thu Jan 27 14:18:48 CET 2005
Subject: [cvs-checkins] MODIFIED: or1k ...
Date: 00/05/01 27:14:18 Modified: or1k/or1ksim/cpu/or1k/opcode or32.h
Log:
Mark wich operand is the destination operand in the architechture definition
Revision Changes Path
1.19 +10 -2 or1k/or1ksim/cpu/or1k/opcode/or32.h
http://www.opencores.org/cvsweb.shtml/or1k/or1ksim/cpu/or1k/opcode/or32.h.diff?r1=1.18&r2=1.19
(In the diff below, changes in quantity of whitespace are not shown.)
Index: or32.h
===================================================================
RCS file: /cvsroot/nogj/or1k/or1ksim/cpu/or1k/opcode/or32.h,v
retrieving revision 1.18
retrieving revision 1.19
diff -u -b -r1.18 -r1.19
--- or32.h 11 Jan 2005 15:41:54 -0000 1.18
+++ or32.h 27 Jan 2005 13:17:08 -0000 1.19
@@ -61,7 +61,7 @@
,() Itself. Characters appears in the assembly code.
rA Register operand.
rB Register operand.
- rD Register operand.
+ rD Register operand (destination).
I An immediate operand, range -32768 to 32767.
J An immediate operand, range . (unused)
K An immediate operand, range 0 to 65535.
@@ -74,7 +74,7 @@
/* Opcode and operand encoding. */
char *encoding;
-#if defined HAS_EXECUTION && !SIMPLE_EXECUTION
+#if defined(HAS_EXECUTION) && !SIMPLE_EXECUTION
char *function_name;
#else /* defined HAS_EXECUTION && !SIMPLE_EXECUTION */
void (*exec)();
@@ -83,13 +83,21 @@
unsigned int flags;
};
+/* This operand is the last in the list */
#define OPTYPE_LAST (0x80000000)
+/* This operand marks the end of the operand sequence (for things like I(rD)) */
#define OPTYPE_OP (0x40000000)
+/* The operand specifies a register index */
#define OPTYPE_REG (0x20000000)
+/* The operand must be sign extended */
#define OPTYPE_SIG (0x10000000)
+/* Operand is a relative address, the `I' in `I(rD)' */
#define OPTYPE_DIS (0x08000000)
+/* The operand is a destination */
#define OPTYPE_DST (0x04000000)
+/* Which bit of the operand is the sign bit */
#define OPTYPE_SBIT (0x00001F00)
+/* Amount to shift the instruction word right to get the operand */
#define OPTYPE_SHR (0x0000001F)
#define OPTYPE_SBIT_SHR (8)
|
 |
Browse
