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Annotation of 43BSDReno/bin/adb/adb.vax/optab.c, revision 1.1.1.1

1.1       root        1: #ifndef lint
                      2: static char optab_sccsid[] = "@(#)optab.c      4.5 (Berkeley) 1/16/89";
                      3: #endif
                      4: 
                      5: /*
                      6:  * adb - (read-only) tables for VAX instruction decoding
                      7:  */
                      8: 
                      9: #define        ADB
                     10: #undef INSTTAB
                     11: 
                     12: /*
                     13:  * Pick up definitions for insttab from the assembler, and also
                     14:  * the arrays ty_NORELOC and ty_nbyte (and soon ty_float);
                     15:  * then, make insttab.
                     16:  */
                     17: #include <sys/types.h>
                     18: #include "instrs.h"
                     19: #include "assizetab.c"
                     20: 
                     21: struct insttab insttab[] = {
                     22: #include "instrs.adb"
                     23:        0
                     24: };
                     25: 
                     26: /*
                     27:  * Register names, and floating point immediate constants.
                     28:  * The f.p. constants can be derived from the expression
                     29:  *
                     30:  *     fp = (.5 + (n & 7) / 16.0) x (2 ^ (n >> 3))
                     31:  *
                     32:  * or, alternatively,
                     33:  *
                     34:  *     union { int i; float f; } u; u.i = (n << 3) | (1 << 14); u.f
                     35:  *
                     36:  * but there are only 64 of them, and this is simpler.
                     37:  */
                     38: char *regname[16] = {
                     39:        "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
                     40:        "r8", "r9", "r10","r11","ap", "fp", "sp", "pc"
                     41: };
                     42: char *fltimm[64] = {
                     43:        "0.5", "0.5625", "0.625", "0.6875", "0.75", "0.8125", "0.875", "0.9375",
                     44:        "1.0", "1.125", "1.25", "1.375", "1.5", "1.625", "1.75", "1.875",
                     45:        "2.0", "2.25", "2.5", "2.75", "3.0", "3.25", "3.5", "3.75",
                     46:        "4.0", "4.5", "5.0", "5.5", "6.0", "6.5", "7.0", "7.5",
                     47:        "8.0", "9.0", "10.0", "11.0", "12.0", "13.0", "14.0", "15.0",
                     48:        "16.0", "18.0", "20.0", "22.0", "24.0", "26.0", "28.0", "30.0",
                     49:        "32.0", "36.0", "40.0", "44.0", "48.0", "52.0", "56.0", "60.0",
                     50:        "64.0", "72.0", "80.0", "88.0", "96.0", "104.0", "112.0", "120.0"
                     51: };

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