1 /*- 2 * Copyright (c) 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.proprietary.c% 6 */ 7 8 #ifndef lint 9 static char optab_sccsid[] = "@(#)optab.c 4.7 (Berkeley) 04/11/91"; 10 #endif /* not lint */ 11 12 /* 13 * adb - (read-only) tables for VAX instruction decoding 14 */ 15 16 #define ADB 17 #undef INSTTAB 18 19 /* 20 * Pick up definitions for insttab from the assembler, and also 21 * the arrays ty_NORELOC and ty_nbyte (and soon ty_float); 22 * then, make insttab. 23 */ 24 #include <sys/types.h> 25 #include "instrs.h" 26 #include "assizetab.c" 27 28 struct insttab insttab[] = { 29 #include "instrs.adb" 30 0 31 }; 32 33 /* 34 * Register names, and floating point immediate constants. 35 * The f.p. constants can be derived from the expression 36 * 37 * fp = (.5 + (n & 7) / 16.0) x (2 ^ (n >> 3)) 38 * 39 * or, alternatively, 40 * 41 * union { int i; float f; } u; u.i = (n << 3) | (1 << 14); u.f 42 * 43 * but there are only 64 of them, and this is simpler. 44 */ 45 char *regname[16] = { 46 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", 47 "r8", "r9", "r10","r11","ap", "fp", "sp", "pc" 48 }; 49 char *fltimm[64] = { 50 "0.5", "0.5625", "0.625", "0.6875", "0.75", "0.8125", "0.875", "0.9375", 51 "1.0", "1.125", "1.25", "1.375", "1.5", "1.625", "1.75", "1.875", 52 "2.0", "2.25", "2.5", "2.75", "3.0", "3.25", "3.5", "3.75", 53 "4.0", "4.5", "5.0", "5.5", "6.0", "6.5", "7.0", "7.5", 54 "8.0", "9.0", "10.0", "11.0", "12.0", "13.0", "14.0", "15.0", 55 "16.0", "18.0", "20.0", "22.0", "24.0", "26.0", "28.0", "30.0", 56 "32.0", "36.0", "40.0", "44.0", "48.0", "52.0", "56.0", "60.0", 57 "64.0", "72.0", "80.0", "88.0", "96.0", "104.0", "112.0", "120.0" 58 }; 59