date and time created 83/07/01 09:21:43 by dlw

SCCS-vsn: usr.bin/f77/libF77/operand.h 1.1

diff --git a/usr/src/usr.bin/f77/libF77/operand.h b/usr/src/usr.bin/f77/libF77/operand.h
new file mode 100644 (file)
index 0000000..d9aeeae
--- /dev/null
+++ b/usr/src/usr.bin/f77/libF77/operand.h
@@ -0,0 +1,58 @@
+/*
+ * operand.h  --  definitions useful to VAX operand decoding
+ *     @(#)operand.h   1.1
+ */
+
+#define        opmode(op)      (op & 0xf0)
+#define        opregn(op)      (op & 0xf)
+
+/*
+ * operand modes
+ */
+#define        LITERAL0        0x00
+#define        LITERAL1        0x10
+#define        LITERAL2        0x20
+#define        LITERAL3        0x30
+#define        INDEXED         0x40
+#define        REGISTER        0x50
+#define        REGDEFERED      0x60
+#define        AUTODEC         0x70
+#define        AUTOINC         0x80
+#define        AUTOINCDEF      0x90
+#define        BYTEDISP        0xa0
+#define        BYTEDISPDEF     0xb0
+#define        WORDDISP        0xc0
+#define        WORDDISPDEF     0xd0
+#define        LONGDISP        0xe0
+#define        LONGDISPDEF     0xf0
+/*
+ * Modes where R is PC
+ */
+#define        IMMEDIATE       0x8f
+#define        ABSOLUTE        0x9f
+#define        BYTEREL         0xaf
+#define        BYTERELDEF      0xbf
+#define        WORDREL         0xcf
+#define        WORDRELDEF      0xdf
+#define        LONGREL         0xef
+#define        LONGRELDEF      0xff
+
+/*
+ * register definitions
+ */
+#define        R0      0
+#define        R1      1
+#define        R2      2
+#define        R3      3
+#define        R4      4
+#define        R5      5
+#define        R6      6
+#define        R7      7
+#define        R8      8
+#define        R9      9
+#define        R10     10
+#define        R11     11
+#define        AP      12
+#define        FP      13
+#define        SP      14
+#define        PC      15