diff options
Diffstat (limited to 'SrcShared/UAE/build68k.c')
| -rw-r--r-- | SrcShared/UAE/build68k.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/SrcShared/UAE/build68k.c b/SrcShared/UAE/build68k.c new file mode 100644 index 0000000..d3fe88a --- /dev/null +++ b/SrcShared/UAE/build68k.c @@ -0,0 +1,246 @@ +/* + * UAE - The Un*x Amiga Emulator + * + * Read 68000 CPU specs from file "table68k" and build table68k.c + * + * Copyright 1995,1996 Bernd Schmidt + */ + +#include "sysconfig.h" +#include "sysdeps.h" + +#include <assert.h> +#include <ctype.h> + +#include "config.h" +#include "options.h" +#include "readcpu.h" + +static FILE *tablef; +static int nextch = 0; + +static void getnextch(void) +{ + do { + nextch = fgetc(tablef); + if (nextch == '%') { + do { + nextch = fgetc(tablef); + } while (nextch != EOF && nextch != '\n'); + } + } while (nextch != EOF && isspace(nextch)); +} + +static int nextchtohex(void) +{ + switch (isupper (nextch) ? tolower (nextch) : nextch) { + case '0': return 0; + case '1': return 1; + case '2': return 2; + case '3': return 3; + case '4': return 4; + case '5': return 5; + case '6': return 6; + case '7': return 7; + case '8': return 8; + case '9': return 9; + case 'a': return 10; + case 'b': return 11; + case 'c': return 12; + case 'd': return 13; + case 'e': return 14; + case 'f': return 15; + default: abort(); + } +} + +int main(int argc, char **argv) +{ + int no_insns = 0; + + printf ("#include \"sysconfig.h\"\n"); + printf ("#include \"sysdeps.h\"\n"); + printf ("#include \"config.h\"\n"); + printf ("#include \"options.h\"\n"); + printf ("#include \"readcpu.h\"\n"); + printf ("struct instr_def defs68k[] = {\n"); +#if 0 + tablef = fopen("table68k","r"); + if (tablef == NULL) { + fprintf(stderr, "table68k not found\n"); + exit(1); + } +#else + tablef = stdin; +#endif + getnextch(); + while (nextch != EOF) { + int cpulevel, plevel, sduse; + int i; + + char patbits[16]; + char opcstr[256]; + int bitpos[16]; + int flagset[5], flaguse[5]; + + unsigned int bitmask,bitpattern; + int n_variable; + + n_variable = 0; + bitmask = bitpattern = 0; + memset (bitpos, 0, sizeof(bitpos)); + for(i=0; i<16; i++) { + int currbit; + bitmask <<= 1; + bitpattern <<= 1; + + switch (nextch) { + case '0': currbit = bit0; bitmask |= 1; break; + case '1': currbit = bit1; bitmask |= 1; bitpattern |= 1; break; + case 'c': currbit = bitc; break; + case 'C': currbit = bitC; break; + case 'f': currbit = bitf; break; + case 'i': currbit = biti; break; + case 'I': currbit = bitI; break; + case 'j': currbit = bitj; break; + case 'J': currbit = bitJ; break; + case 'k': currbit = bitk; break; + case 'K': currbit = bitK; break; + case 's': currbit = bits; break; + case 'S': currbit = bitS; break; + case 'd': currbit = bitd; break; + case 'D': currbit = bitD; break; + case 'r': currbit = bitr; break; + case 'R': currbit = bitR; break; + case 'z': currbit = bitz; break; + default: abort(); + } + if (!(bitmask & 1)) { + bitpos[n_variable] = currbit; + n_variable++; + } + + if (nextch == '0' || nextch == '1') + bitmask |= 1; + if (nextch == '1') + bitpattern |= 1; + patbits[i] = nextch; + getnextch(); + } + + while (isspace(nextch) || nextch == ':') /* Get CPU and privilege level */ + getnextch(); + + switch (nextch) { + case '0': cpulevel = 0; break; + case '1': cpulevel = 1; break; + case '2': cpulevel = 2; break; + case '3': cpulevel = 3; break; + case '4': cpulevel = 4; break; + default: abort(); + } + getnextch(); + + switch (nextch) { + case '0': plevel = 0; break; + case '1': plevel = 1; break; + case '2': plevel = 2; break; + case '3': plevel = 3; break; + default: abort(); + } + getnextch(); + + while (isspace(nextch)) /* Get flag set information */ + getnextch(); + + if (nextch != ':') + abort(); + + for(i = 0; i < 5; i++) { + getnextch(); + switch(nextch){ + case '-': flagset[i] = fa_unset; break; + case '/': flagset[i] = fa_isjmp; break; + case '0': flagset[i] = fa_zero; break; + case '1': flagset[i] = fa_one; break; + case 'x': flagset[i] = fa_dontcare; break; + case '?': flagset[i] = fa_unknown; break; + default: flagset[i] = fa_set; break; + } + } + + getnextch(); + while (isspace(nextch)) + getnextch(); + + if (nextch != ':') /* Get flag used information */ + abort(); + + for(i = 0; i < 5; i++) { + getnextch(); + switch(nextch){ + case '-': flaguse[i] = fu_unused; break; + case '/': flaguse[i] = fu_isjmp; break; + case '+': flaguse[i] = fu_maybecc; break; + case '?': flaguse[i] = fu_unknown; break; + default: flaguse[i] = fu_used; break; + } + } + + getnextch(); + while (isspace(nextch)) + getnextch(); + + if (nextch != ':') /* Get source/dest usage information */ + abort(); + + getnextch(); + sduse = nextchtohex() << 4; + getnextch(); + sduse |= nextchtohex(); + + getnextch(); + while (isspace(nextch)) + getnextch(); + + if (nextch != ':') + abort(); + + fgets(opcstr, 250, tablef); + getnextch(); + { + int j; + /* Remove superfluous spaces from the string */ + char *opstrp = opcstr, *osendp; + int slen = 0; + + while (isspace(*opstrp)) + opstrp++; + + osendp = opstrp; + while (*osendp) { + if (!isspace (*osendp)) + slen = osendp - opstrp + 1; + osendp++; + } + opstrp[slen] = 0; + + if (no_insns > 0) + printf(",\n"); + no_insns++; + printf("{ %d, %d, {", bitpattern, n_variable); + for (j = 0; j < 16; j++) { + printf("%d", bitpos[j]); + if (j < 15) + printf(","); + } + printf ("}, %d, %d, %d, { ", bitmask, cpulevel, plevel); + for(i = 0; i < 5; i++) { + printf("{ %d, %d }%c ", flaguse[i], flagset[i], i == 4 ? ' ' : ','); + } + printf("}, %d, \"%s\"}", sduse, opstrp); + } + } + printf("};\nint n_defs68k = %d;\n", no_insns); + return 0; +} |