diff options
author | Steve Chamberlain <sac@cygnus> | 1993-01-03 22:19:42 +0000 |
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committer | Steve Chamberlain <sac@cygnus> | 1993-01-03 22:19:42 +0000 |
commit | 191395156c25bce7915660307c78708269ff6c0f (patch) | |
tree | 997093535ad84b69b1ea353ea1d6b6b1085229ae /sim/h8300/writecode.c | |
parent | 1188fbbf2762a9692c6f4756d2c8984c01c4fa23 (diff) | |
download | gdb-191395156c25bce7915660307c78708269ff6c0f.zip gdb-191395156c25bce7915660307c78708269ff6c0f.tar.gz gdb-191395156c25bce7915660307c78708269ff6c0f.tar.bz2 |
* p1.c, p3.c, run.c, writecode.c: all used h8/300 opcodes in and
running
Diffstat (limited to 'sim/h8300/writecode.c')
-rw-r--r-- | sim/h8300/writecode.c | 1472 |
1 files changed, 489 insertions, 983 deletions
diff --git a/sim/h8300/writecode.c b/sim/h8300/writecode.c index 77625cc..0f8408a 100644 --- a/sim/h8300/writecode.c +++ b/sim/h8300/writecode.c @@ -1,4 +1,4 @@ -/* BFD library support routines for the Hitachi H8/300 architecture. +/* code generator for the Hitachi H8/300 architecture simulator. Copyright (C) 1990-1991 Free Software Foundation, Inc. Hacked by Steve Chamberlain of Cygnus Support. @@ -18,8 +18,12 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include"bfd.h" -#include"sysdep.h" +/* This program reads the H8/300 opcode table and writes out + a large switch statement to understand the opcodes (with ifs if + there is more than one opcode per case) and code to do the stuff */ + +#include "bfd.h" +#include "sysdep.h" #define DEFINE_TABLE #define INSIM @@ -30,13 +34,10 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define PTWO 256 static struct h8_opcode *h8_opcodes_sorted[PTWO][MAXSAME]; -/* Run through the opcodes and sort them into order to make them easy - to disassemble - */ - char *cs = "/*"; char *ce = "*/"; +/* How to get at nibble n from the instruction */ char *nibs[] = { "foo", @@ -49,342 +50,103 @@ char *nibs[] = "((pc[3])&0xf)", 0, 0}; -char *abs8[] = -{ - "foo", - "foo", - "b1", - "foo", -}; +/* how to get at the 3 bit immediate in the instruction */ +char *imm3[] = +{"foo", + "foo", + "((pc[1]>>4)&0x7)", + "foo", + "foo", + "foo", + "((pc[3]>>4)&0x7)"}; + +/* How to get at a byte register from an index in the instruction at + nibble n */ +char *breg[] = +{"foo", + "*(blow[b0])", + "*(bhigh[b1])", + "*(blow[b1])"}; + +/* How to get at a word register from an index in the instruction at + nibble n */ + +char *wreg[] = +{"foo", + "*(wlow[b0])", + "*(whigh[b1])", + "*(wlow[b1])"}; #define sorted_key noperands -char *abs16[] = -{ - "foo", - "foo", - "foo", - "foo", - "(pc[2]<<8)|pc[3]", - "foo", - "foo", - "foo", -}; -char *empty="fake"; +/* sort the opcode table into h8_opcodes_sorted[0..255] */ +static void init () { unsigned int i; struct h8_opcode *p; for (p = h8_opcodes; p->name; p++) - { - int n1 = 0; - int n2 = 0; - int j; - for (j = 0; p->data.nib[j] != E; j++) - { - if ((int)p->data.nib[j] == ABS16ORREL8SRC) - p->data.nib[j] = ABS16SRC; - if ((int)p->data.nib[j ] == ABS16OR8SRC) - p->data.nib[j] = ABS16SRC; - if ((int)p->data.nib[j] == ABS16OR8DST) - p->data.nib[j] = ABS16DST; - } - /* Kill push and pop, they're duplicates */ - if (strcmp(p->name,"push")==0) { - p->name = empty; - } - if (strcmp(p->name,"pop")==0) { - p->name = empty; - } - - - if ((int) p->data.nib[0] < 16) - { - n1 = (int) p->data.nib[0]; - } - else - n1 = 0; - if ((int) p->data.nib[1] < 16) - { - n2 = (int) p->data.nib[1]; - } - else - n2 = 0; -#if 0 - if ((int) p->data.nib[2] < 16) - { - n3 = (int) p->data.nib[2]; - } - else if ((int) p->data.nib[2] & B30) - { - n3 = 0; - } - else if ((int) p->data.nib[2] & B31) - { - n3 = 0x8; - } - - - if ((int) p->data.nib[3] < 16) - { - n4 = (int) p->data.nib[3]; - } - else if ((int) p->data.nib[3] & B30) - { - n4 = 0; - } - else if ((int) p->data.nib[3] & B31) - { - n4 = 0x8; - } -#endif - for (i = 0; i < MAXSAME; i++) - { - int j = /* ((n3 >> 3) * 512) + ((n4 >> 3) * 256) + */ n1 * 16 + n2; - - if (h8_opcodes_sorted[j][i] == (struct h8_opcode *) NULL) - { - h8_opcodes_sorted[j][i] = p; - p->sorted_key = j; - break; - } - } - - if (i == MAXSAME) - abort (); - - /* Just make sure there are an even number of nibbles in it, and - that the count is the same s the length */ - for (i = 0; p->data.nib[i] != E; i++) - /*EMPTY*/ ; - if (i & 1) - abort (); - p->length = i / 2; - } - for (i = 0; i < PTWO; i++) - { - if (h8_opcodes_sorted[i][0]) - p = h8_opcodes_sorted[i][0]; - else - h8_opcodes_sorted[i][0] = p; - } -} - -unsigned int -DEFUN (bfd_h8_disassemble, (addr, data, stream), - bfd_vma addr AND - CONST bfd_byte * data AND - FILE * stream) -{ - /* Find the first entry in the table for this opcode */ - CONST static char *regnames[] = - { - "r0h", "r1h", "r2h", "r3h", "r4h", "r5h", "r6h", "r7h", - "r0l", "r1l", "r2l", "r3l", "r4l", "r5l", "r6l", "r7l"}; - - int rs = 0; - int rd = 0; - int rdisp = 0; - int abs = 0; - struct h8_opcode **p = h8_opcodes_sorted[(unsigned) (data[0])]; - struct h8_opcode *q; - - /* Find the exact opcode/arg combo */ - while (*p) { - op_type *nib; - unsigned int len = 0; + int n1 = 0; + int n2 = 0; + int j; - q = *p++; - nib = q->data.nib; - while (*nib != E) + for (j = 0; p->data.nib[j] != E; j++) + { + if ((int) p->data.nib[j] == ABS16ORREL8SRC) + p->data.nib[j] = ABS16SRC; + if ((int) p->data.nib[j] == ABS16OR8SRC) + p->data.nib[j] = ABS16SRC; + if ((int) p->data.nib[j] == ABS16OR8DST) + p->data.nib[j] = ABS16DST; + } + if ((int) p->data.nib[0] < 16) + { + n1 = (int) p->data.nib[0]; + } + else + n1 = 0; + if ((int) p->data.nib[1] < 16) + { + n2 = (int) p->data.nib[1]; + } + else + n2 = 0; + for (i = 0; i < MAXSAME; i++) { - op_type looking_for = *nib; - int thisnib = data[len >> 1]; + int j = /* ((n3 >> 3) * 512) + ((n4 >> 3) * 256) + */ n1 * 16 + n2; - thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf); - if ((int) looking_for & (int) B31) - { - if (((int) thisnib & 0x8) == 0) - goto fail; - looking_for = (op_type) ((int) looking_for & ~(int) B31); - } - if ((int) looking_for & (int) B30) - { - if (((int) thisnib & 0x8) != 0) - goto fail; - looking_for = (op_type) ((int) looking_for & ~(int) B30); - } - switch (looking_for) + if (h8_opcodes_sorted[j][i] == (struct h8_opcode *) NULL) { - case 0: - case 1: - case 2: - case 3: - case 4: - case 5: - case 6: - case 7: - case 8: - case 9: - case 10: - case 11: - case 12: - case 13: - case 14: - case 15: - if ((int) looking_for != thisnib) - goto fail; - break; - case ABS16SRC: - case ABS16OR8SRC: - case ABS16ORREL8SRC: - case ABS16DST: - case ABS16OR8DST: - case DISPSRC: - case DISPDST: - case IMM16: - abs = (data[len >> 1]) * 256 + data[(len + 2) >> 1]; - len += 3; - nib += 3; - break; - case DISPREG: - rdisp = thisnib; - break; - case KBIT: - abs = thisnib == 0x8 ? 2 : 1; - break; - case IMM8: - case ABS8SRC: - case ABS8DST: - case MEMIND: - case DISP8: - abs = data[len >> 1]; - len++; - nib++; + h8_opcodes_sorted[j][i] = p; + p->sorted_key = j; break; - case IMM3: - abs = thisnib; - break; - case RS8: - case RS16: - case RSINC: - case RSIND: - rs = thisnib; - break; - case RD16: - case RDDEC: - case RD8: - case RDIND: - rd = thisnib; - break; - default: - fprintf (stream, "Dont understand \n"); - goto found; } - len++; - nib++; } - goto found; - fail: - ; + if (i == MAXSAME) + abort (); + + /* Just make sure there are an even number of nibbles in it, and + that the count is the same s the length */ + for (i = 0; p->data.nib[i] != E; i++) + /*EMPTY*/ ; + if (i & 1) + abort (); + p->length = i / 2; + } + for (i = 0; i < PTWO; i++) + { + if (h8_opcodes_sorted[i][0]) + p = h8_opcodes_sorted[i][0]; + else + h8_opcodes_sorted[i][0] = p; } - fprintf (stream, "%02x %02x .word\tH'%x,H'%x", - data[0], data[1], - data[0], data[1]); - return 2; -found:; - { - int i; - - for (i = 0; i < q->length; i++) - { - fprintf (stream, "%02x", data[i]); - } - for (; i < 6; i++) - { - fprintf (stream, " "); - } - } - fprintf (stream, "%s\t", q->name); - /* Now print out the args */ - { - op_type *args = q->args.nib; - int hadone = 0; - - while (*args != E) - { - if (hadone) - fprintf (stream, ","); - switch ((int) (*args) & ~((int) B30 | (int) B31)) - { - case IMM16: - case IMM8: - case IMM3: - fprintf (stream, "#0x%x", (unsigned) abs); - break; - case RD8: - fprintf (stream, "%s", regnames[rd]); - break; - case RS8: - fprintf (stream, "%s", regnames[rs]); - break; - case RD16: - fprintf (stream, "r%d", rd & 0x7); - break; - case RS16: - fprintf (stream, "r%d", rs & 0x7); - break; - case RSINC: - fprintf (stream, "@r%d+", rs & 0x7); - break; - case RDDEC: - fprintf (stream, "@-r%d", rd & 0x7); - break; - case RDIND: - fprintf (stream, "@r%d", rd & 0x7); - break; - case RSIND: - fprintf (stream, "@r%d", rs & 0x7); - break; - case ABS8SRC: - case ABS16SRC: - case ABS16OR8SRC: - case ABS16ORREL8SRC: - case ABS16OR8DST: - case ABS16DST: - case ABS8DST: - fprintf (stream, "@0x%x", (unsigned) abs); - break; - case MEMIND: - fprintf (stream, "@@%d (%x)", abs, abs); - break; - case DISP8: - fprintf (stream, ".%s%d (%x)", (char) abs > 0 ? "+" : "", (char) abs, - addr + (char) abs + 2); - break; - case DISPSRC: - case DISPDST: - fprintf (stream, "@(0x%x,r%d)", abs, rdisp & 0x7); - break; - case CCR: - fprintf (stream, "ccr"); - break; - case KBIT: - fprintf (stream, "#%d", abs); - break; - default: - abort (); - } - hadone = 1; - args++; - } - } - return q->length; } +/* either fetch srca&srcb or store dst */ + void decode (p, fetch, size) struct h8_opcode *p; @@ -395,399 +157,224 @@ decode (p, fetch, size) char *ss = size == 8 ? "BYTE" : "WORD"; for (i = 0; p->data.nib[i] != E; i++) - { - switch (p->data.nib[i]) - { - case RS8: - if (fetch) - printf ("srca = BYTE_REG(%s);\n", nibs[i]); - break; - case RS16 | B30: - case RS16 | B31: - case RS16: - if (fetch) - printf ("srca = WORD_REG(%s);\n", nibs[i]); - break; - case RD8: - if (fetch) - printf ("srcb = BYTE_REG(%s);\n", nibs[i]); - else - printf ("SET_BYTE_REG(%s,dst);\n", nibs[i]); - break; - case RD16 | B30: - case RD16 | B31: - case RD16: - if (fetch) - printf ("srcb = WORD_REG(%s);\n", nibs[i]); - else - printf ("SET_WORD_REG(%s,dst);\n", nibs[i]); - break; - case IMM8: - if (fetch) - printf ("srca = b1;\n", i); - break; - case RSINC: - case RSINC | B30: - case RSINC | B31: - - if (fetch) - { - printf("rn = %s &0x7;\n", nibs[i]); - printf ("srca = %s_MEM(reg[rn]);\n", size == 8 ? "BYTE" - : "WORD") ; - printf("reg[rn]+=%d;\n", size/8); - } - break; - case RSIND: - case RSIND | B30: - case RSIND | B31: - if (fetch) { - printf("lval = WORD_REG(%s);\n", nibs[i]); - printf("srca = %s_MEM(lval);\n", ss); - } - break; - - case RDIND: - case RDIND | B30: - case RDIND | B31: - if (fetch) { - printf("rn = %s & 0x7;\n", nibs[i] ); - printf("lval = reg[rn];\n"); - printf("srcb = %s_MEM(lval);\n", size==8 ? "BYTE" : "WORD"); - } - else - { - printf("SET_%s_MEM(lval,dst);\n",ss); - } - break; - - case MEMIND: - if (fetch) - { - printf("lval = WORD_MEM(b1);\n"); - } - break; - case RDDEC: - case RDDEC | B30: - case RDDEC | B31: - if (!fetch) - { - printf("rn = %s & 0x7;\n", nibs[i]); - printf("reg[rn]-=%d;\n", size/8); - printf ("SET_%s_MEM(reg[rn], dst);\n", - size == 8 ? "BYTE" : "WORD"); - } - break; - - case IMM16: - if (fetch) - printf ("srca =WORD_IMM;\n", i); - break; - case ABS8SRC: - if (fetch) { - - printf("lval = (0xff00) + b1;\n"); - printf ("srca = BYTE_MEM(lval);\n"); - } - - break; - case ABS8DST: - if (fetch) - { - printf("lval = (0xff00) + b1;\n"); - printf ("srcb = BYTE_MEM(lval);\n"); - } - else - { - printf ("SET_BYTE_MEM(lval,dst);\n"); - } - break; - case KBIT: - if (fetch) - printf ("srca = KBIT(%d);\n", i); - break; - case ABS16ORREL8SRC: - case ABS16SRC: - if (fetch) - { - printf("lval = ((pc[2] << 8) + pc[3]);\n"); - printf("srca = %s_MEM(lval);\n", size==8 ? "BYTE" : "WORD"); - } - break; - case DISPREG|B30: - case DISPREG|B31: - case DISPREG: - printf("rn = %s & 0x7;\n", nibs[i]); - break; - case DISPSRC: - if (fetch) - { - printf("lval = 0xffff&((pc[2] << 8) + pc[3] +reg[rn]);\n"); - printf("srca = %s_MEM(lval);\n", size == 8 ? "BYTE" : "WORD"); - } - break; - case DISPDST: - if (fetch) - { - printf("lval = 0xffff&((pc[2] << 8) + pc[3] +reg[rn]);\n"); - printf("srcb = %s_MEM(lval);\n", size == 8 ? "BYTE" : "WORD"); - } - else { - printf("SET_%s_MEM(lval,dst);\n",ss); - } - break; - case ABS16DST: - if (fetch) - { - printf("lval = ((pc[2] << 8) + pc[3]);\n"); - printf("srcb = WORD_MEM(lval);\n"); - } - else - { - printf ("SET_WORD_MEM(lval,dst);\n", i); - } - break; - case IGNORE: - break; - case DISP8: - printf(" /* DISP8 handled in opcode */\n"); - break; - default: - if (p->data.nib[i] > HexF) - { - printf("exception = SIGILL;\n"); - } - } - } -} - -#define NNIBS 8 - -typedef int keytype[NNIBS]; -struct key -{ - keytype k; - int nmatch; -/* struct h8_opcode *match[200];*/ -}; - -struct key keys[50]; -int nkeys; - -calckey (p, key) -struct h8_opcode *p; - keytype key; -{ - int j; - - for (j = 0; (p->data.nib[j] != E); j++) { - if (p->data.nib[j] == RS8 || p->data.nib[j] == RD8) - p->size = 8; - if (p->size != 8) - p->size=16; - if (p->data.nib[j] > HexF) - key[j] = p->data.nib[j]; - else - key[j] = 0; - } - for (; j < NNIBS; j++) - key[j] = 0; -} - -lookup (key) -keytype key; -{ - int n; - - /* See if this key matches one already found */ - for (n = 0; n < nkeys; n++) - { - int i; - - for (i = 0; i < NNIBS; i++) + switch (p->data.nib[i]) { - if ((keys[n].k[i]&0x3f) != (key[i]&0x3f)) - break; - } - if (i == NNIBS) - break; - } - return n; -} -BADNEWS(x) { -if (x == 0x7c) return 0; -if (x == 0x7d) return 0; -if (x == 0x7e) return 0; -if (x == 0x7f) return 0; -return 1; -} + case RS8: + if (fetch) + printf ("srca = %s;\n", breg[i]); + break; + case RS16 | B30: + case RS16 | B31: + case RS16: + if (fetch) + printf ("srca = %s;\n", wreg[i]); + break; + case RD8: + if (fetch) + printf ("srcb = %s;\n", breg[i]); + else + printf ("%s = dst;\n", breg[i]); + break; + case RD16 | B30: + case RD16 | B31: + case RD16: + if (fetch) + printf ("srcb = %s;\n", wreg[i]); + else + printf ("%s =dst;\n", wreg[i]); + break; + case IMM8: + if (fetch) + printf ("srca = b1;\n"); + break; + case RSINC: + case RSINC | B30: + case RSINC | B31: -sortmodes () -{ - /* look through all the addressing modes, work out which ones are unique*/ - struct h8_opcode **p; - keytype key; + if (fetch) + { + printf ("srca = %s_MEM(%s);\n", ss, wreg[i]); + printf ("%s+=%d;\n", wreg[i], size / 8); + } + break; + case RSIND: + case RSIND | B30: + case RSIND | B31: + if (fetch) + { + printf ("lval = %s;\n", wreg[i]); + printf ("srca = %s_MEM(lval);\n", ss); + } + break; - int n; - int i; + case RDIND: + case RDIND | B30: + case RDIND | B31: + if (fetch) + { + printf ("lval = %s;\n", wreg[i]); + printf ("srcb = %s_MEM(lval);\n", ss); + } + else + { + printf ("SET_%s_MEM(lval,dst);\n", ss); + } + break; - memset (keys, 0, sizeof (keys)); + case MEMIND: + if (fetch) + { + printf ("lval = ((pc[2]<<8)|pc[3]);\n"); + } + break; + case RDDEC: + case RDDEC | B30: + case RDDEC | B31: + if (!fetch) + { + printf ("%s -=%d;\n", wreg[i], size / 8); + printf ("SET_%s_MEM(%s, dst);\n", ss, wreg[i]); + } + break; + case IMM3: + case IMM3 | B31: + case IMM3 | B30: + if (fetch) + printf ("srca = %s;\n", imm3[i]); + break; + case IMM16: + if (fetch) + printf ("srca =( pc[2] << 8) | pc[3];\n"); + break; + case ABS8SRC: + if (fetch) + { - for (i = 0; i < PTWO; i++) - { - p = h8_opcodes_sorted[i]; - while (*p) - { - int j; - int a = 0; + printf ("lval = (0xff00) + b1;\n"); + printf ("srca = BYTE_MEM(lval);\n"); + } -if (BADNEWS((*p)->sorted_key)) { - calckey (*p, key); - n = lookup (key); - if (n == nkeys) + break; + case ABS8DST: + if (fetch) { - /* No hit, insert */ - memcpy (keys[n].k, key, sizeof (keys[n].k)); - nkeys++; + printf ("lval = (0xff00) + b1;\n"); + printf ("srcb = BYTE_MEM(lval);\n"); + } + else + { + printf ("SET_BYTE_MEM(lval,dst);\n"); + } + break; + case KBIT: + if (fetch) + printf ("srca = ((b1&0x80)?2:1);\n"); + break; + case ABS16ORREL8SRC: + case ABS16SRC: + if (fetch) + { + printf ("lval = ((pc[2] << 8) + pc[3]);\n"); + printf ("srca = %s_MEM(lval);\n", size == 8 ? "BYTE" : "WORD"); + } + break; + case DISPREG | B30: + case DISPREG | B31: + case DISPREG: + printf ("rn = %s & 0x7;\n", nibs[i]); + break; + case DISPSRC: + if (fetch) + { + printf ("lval = 0xffff&((pc[2] << 8) + pc[3] +reg[rn]);\n"); + printf ("srca = %s_MEM(lval);\n", size == 8 ? "BYTE" : "WORD"); + } + break; + case DISPDST: + if (fetch) + { + printf ("lval = 0xffff&((pc[2] << 8) + pc[3] +reg[rn]);\n"); + printf ("srcb = %s_MEM(lval);\n", size == 8 ? "BYTE" : "WORD"); + } + else + { + printf ("SET_%s_MEM(lval,dst);\n", ss); + } + break; + case ABS16DST: + if (fetch) + { + printf ("lval = ((pc[2] << 8) + pc[3]);\n"); + printf ("srcb = %s_MEM(lval);\n", ss); + } + else + { + printf ("SET_%s_MEM(lval,dst);\n", ss); + } + break; + case IGNORE: + break; + case DISP8: + printf (" /* DISP8 handled in opcode */\n"); + break; + default: + if (p->data.nib[i] > HexF) + { + printf ("exception = SIGILL;\n"); } - /* Link in the p */ -#if 0 -/*e*/ keys[n].match[keys[n].nmatch++] = *p; -#endif - } - (*p)->idx = n; - p++; } } - -#if 0 - for (n = 0; n < nkeys; n++) - { - printf ("%d %d %d %d %d %d %d %d\n", keys[n][0], keys[n][1], keys[n][2], keys[n][3], - keys[n][4], keys[n][5], keys[n][6], keys[n][7]); - - } -#endif - -} -void -enop () -{ - printf ("%s Nop does nothing %s", cs, ce); } -void + +static void esleep () { printf ("exception = SIGSTOP;\n"); } -rv (x) -{ - printf ("v= 0;\n"); -} - -void +static void mov (p, s, sz) struct h8_opcode *p; char *s; int sz; { - printf("dst = srca;\n"); -} - -tn (s) -{ -/* printf ("n = dst & 0x%x;\n", s == 8 ? 0x80 : 0x8000);*/ -} - -tz (s) -{ -/* printf ("z = ~(dst & 0x%x);\n", s == 8 ? 0xff : 0xffff);*/ -} - -tv (s) -{ -/* printf ("v = (( (~(srca ^ srcb) & (srca ^ dst))) & (1<<%d));\n", s);*/ -} - -tc (s) -{ - printf ("c = dst & 0x%x;\n", 1 << s); -} - -log_flags (s) -{ - tn (s); - tz (s); - rv (s); -} - -alu_flags (s) -{ - tn (s); - tz (s); - tv (s); - tc (s); -} - -void -bclr (p) - struct h8_opcode *p; -{ - printf ("dst = srca & ~(1<<srcb);\n"); -} - -void -biand (p) - struct h8_opcode *p; -{ - printf ("c =(C && ! ((srca >> srcb)&1));\n"); -} - -void -bild (p) - struct h8_opcode *p; -{ - printf ("c = ( ! ((srca >> srcb)&1));\n"); + printf ("dst = srca;\n"); } - -void +static void andc (p) struct h8_opcode *p; { printf ("SET_CCR(GET_CCR() & srca);\n"); } -void +static void addx (p) struct h8_opcode *p; { printf ("dst = srca + srcb+ (c != 0);\n"); } -void +static void subx (p) struct h8_opcode *p; { printf ("dst = srcb - srca - (c != 0);\n"); } -void +static void add (p, s, sz) struct h8_opcode *p; char *s; int sz; { printf ("%s;\n", s); - alu_flags (sz); - } -void +static void adds (p, s) struct h8_opcode *p; char *s; @@ -795,7 +382,7 @@ adds (p, s) printf ("%s;\n", s); } -void +static void bra (p, a) struct h8_opcode *p; char *a; @@ -803,47 +390,47 @@ bra (p, a) printf ("if (%s) npc += (((char *)pc)[1]);\n", a); } - -void +static void bsr (p, a) struct h8_opcode *p; char *a; { - printf("reg[7]-=2;\n"); - printf("tmp = reg[7];\n"); + printf ("reg[7]-=2;\n"); + printf ("tmp = reg[7];\n"); printf ("SET_WORD_MEM(tmp, npc-mem);\n"); printf ("npc += (((char *)pc)[1]);\n"); } -void +static void cmp (p, a, s) struct h8_opcode *p; char *a; int s; { - decode(p, 1, s); -printf("srca = -srca;\n"); + decode (p, 1, s); + printf ("srca = -srca;\n"); printf ("dst = srca + srcb;\n"); } +static void jsr (p, a, s) struct h8_opcode *p; char *a; int s; { - printf("if (b1 == 0xc4) {\n"); - printf("printf(\"%%c\", reg[2]);\n"); - printf("}\n"); - printf("else {\n"); - printf("reg[7]-=2;\n"); - printf("tmp = reg[7];\n"); + printf ("if (b1 == 0xc4) {\n"); + printf ("printf(\"%%c\", reg[2]);\n"); + printf ("}\n"); + printf ("else {\n"); + printf ("reg[7]-=2;\n"); + printf ("tmp = reg[7];\n"); printf ("SET_WORD_MEM(tmp, npc-mem);\n"); printf ("npc = lval + mem;\n"); - printf("}"); + printf ("}"); } -void +static void jmp (p, a, s) struct h8_opcode *p; char *a; @@ -852,7 +439,7 @@ jmp (p, a, s) printf ("npc = lval + mem;\n"); } -void +static void rts (p, a, s) struct h8_opcode *p; char *a; @@ -863,27 +450,27 @@ rts (p, a, s) printf ("npc = mem + WORD_MEM(tmp);\n"); } -void +static void setf (p, a, s) struct h8_opcode *p; char *a; int s; { printf ("tmp = GET_CCR();\n"); - printf ("tmp %s= srca;\n",a); + printf ("tmp %s= srca;\n", a); } -void +static void bpt (p, a, s) struct h8_opcode *p; char *a; int s; { printf ("exception = SIGTRAP;\n"); - printf( "npc = pc;\n"); + printf ("npc = pc;\n"); } -void +static void log (p, a, s) struct h8_opcode *p; char *a; @@ -892,7 +479,7 @@ log (p, a, s) printf ("dst = srcb %s srca;\n", a); } -void +static void ulog (p, a, s) struct h8_opcode *p; char *a; @@ -901,102 +488,143 @@ ulog (p, a, s) printf ("dst = %s srcb ;\n", a); } -void -nop() +static void +nop () { } -void -rotl() +static void +rotl () { -printf("c = srcb & 0x80;\n"); -printf("dst = srcb << 1;\n"); -printf("if (c) dst|=1;\n"); + printf ("c = srcb & 0x80;\n"); + printf ("dst = srcb << 1;\n"); + printf ("if (c) dst|=1;\n"); } -void -rotr() + +static void +rotr () { -printf("c = srcb & 1;\n"); -printf("dst = srcb >> 1;\n"); -printf("if (c) dst|=0x80;\n"); + printf ("c = srcb & 1;\n"); + printf ("dst = srcb >> 1;\n"); + printf ("if (c) dst|=0x80;\n"); } -void -rotxl() +static void +rotxl () +{ + printf ("tmp = srcb & 0x80;\n"); + printf ("dst = srcb << 1;\n"); + printf ("if (c) dst|=1;\n"); + printf ("c = tmp;\n"); +} + +static void +rotxr () +{ + printf ("tmp = srcb & 1;\n"); + printf ("dst = srcb >> 1;\n"); + printf ("if (c) dst|=0x80;\n"); + printf ("c = tmp;\n"); +} + +static void +shal () { -printf("tmp = srcb & 0x80;\n"); -printf("dst = srcb << 1;\n"); -printf("if (c) dst|=1;\n"); -printf("c = tmp;\n"); + printf ("c = srcb&0x80;\n"); + printf ("dst = srcb << 1;\n"); } + +static void -rotxr() +shar () { -printf("tmp = srcb & 1;\n"); -printf("dst = srcb >> 1;\n"); -printf("if (c) dst|=0x80;\n"); -printf("c = tmp;\n"); + printf ("c = srcb&0x1;\n"); + printf ("if (srcb&0x80) dst = (srcb>>1) | 0x80;\n"); + printf ("else dst = (srcb>>1) &~ 0x80;\n"); } +static +void +shll () +{ + printf ("c = srcb&0x80;\n"); + printf ("dst = srcb << 1;\n"); +} +static void -shal() +shlr () { -printf("c = srcb&0x80;\n"); -printf("dst = srcb << 1;\n"); + printf ("c = srcb&0x1;\n"); + printf ("dst = (srcb>>1) &~ 0x80;\n"); } +static void -shar() +divxu () { -printf("c = srcb&0x1;\n"); -printf("if (srcb&0x80) dst = (srcb>>1) | 0x80;\n"); -printf("else dst = (srcb>>1) &~ 0x80;\n"); + printf ("srca = %s;\n", breg[2]); + printf ("srcb = %s;\n", wreg[3]); + printf ("n = srca & 0x80;\n"); + printf ("z = !srca;\n"); + printf ("if (srca) dst = srcb / srca;tmp = srcb %% srca;\n"); + printf ("%s = (dst & 0xff) | (tmp << 8);\n", wreg[3]); } +static void -shll() +mulxu () { -printf("c = srcb&0x80;\n"); -printf("dst = srcb << 1;\n"); + printf ("srca = %s;\n", breg[2]); + printf ("srcb = %s;\n", wreg[3]); + + printf ("dst = (srcb&0xff) * srca;\n"); + printf ("%s = dst;\n", wreg[3]); } +static void -shlr() +inc () { -printf("c = srcb&0x1;\n"); -printf("dst = (srcb>>1) &~ 0x80;\n"); + printf ("dst = %s;\n", breg[3]); + printf ("v = (dst==0x7f);\n"); + printf ("dst++;\n"); + printf ("%s= dst;\n", breg[3]); } +static void -divxu() +bit (p, a, s) + struct h8_opcode *p; + char *a; + int s; { - printf("srca = BYTE_REG(pc[1]>>4);\n"); - printf("srcb = WORD_REG(pc[1]&0x7);\n"); - printf("n = srca & 0x80\;\n"); - printf("z = !srca;\n"); - printf("if (srca) dst = srcb / srca;tmp = srcb %% srca;\n"); - printf("reg[pc[1]&0x7] = (dst & 0xff) | (tmp << 8);\n"); + printf ("%s\n", a); } + +static void -mulxu() +dec () { - printf("srca = BYTE_REG(pc[1]>>4);\n"); - printf("srcb = WORD_REG(pc[1]&0x7);\n"); - printf("dst = (srcb&0xff) * srca;\n"); - printf("reg[pc[1]&0x7] = dst;\n"); + printf ("dst = %s;\n", breg[3]); + printf ("v = (dst==0x80);\n"); + printf ("dst--;\n"); + printf ("%s = dst;\n", breg[3]); } -char saf[]="goto setflags;"; + +char saf[] = "goto setflags;"; char sf[] = "goto shiftflags;"; char af8[] = "goto aluflags8;"; char af16[] = "goto aluflags16;"; char lf[] = "goto logflags;"; -char mf8[]= "goto movflags8;"; -char mf16[]= "goto movflags16;"; +char icf[] = "goto incflags;"; +char mf8[] = "goto movflags8;"; +char mf16[] = "goto movflags16;"; char nx[] = "goto next;"; + struct { -char *ftype; + char *ftype; int decode; char *name; void (*func) (); @@ -1005,71 +633,85 @@ char *ftype; } - table [] = { - saf,1,"orc",setf,"|",0, - saf,1,"xorc",setf,"^",0, - saf,1,"andc",setf,"&",0, - 0,1, "bild", bild, 0, 0, - 0,1, "nop", nop, 0, 0, - 0,1, "bclr", bclr, 0, 0, - 0,1, "biand", biand, 0, 0, - 0,1, "bra", bra, "1", 0, - 0,1, "brn", bra, "0", 0, - 0,1, "bf", bra, "0", 0, - 0,1, "bhi", bra, "(C||Z)==0", 0, - 0,1, "bls", bra, "(C||Z)==1", 0, - 0,1, "bcs", bra, "C==1", 0, - 0,1, "bcc", bra, "C==0", 0, - 0,1, "bpl", bra, "N==0", 0, - 0,1, "bmi", bra, "N==1", 0, - 0,1, "bvs", bra, "V==1", 0, - 0,1, "bvc", bra, "V==0", 0, - 0,1, "bge", bra, "(N^V)==0", 0, - 0,1, "bgt", bra, "(Z|(N^V))==0", 0, - 0,1, "blt", bra, "(N^V)==1", 0, - 0,1, "ble", bra, "(Z|(N^V))==1", 0, - 0,1, "beq", bra, "Z==1", 0, - 0,1, "bne", bra, "Z==0", 0, - 0,1, "bsr", bsr, "", 0, - 0,1, "jsr", jsr, 0, 0, - 0,1, "jmp", jmp, 0, 0, - 0,0, "rts", rts, 0, 0, - 0,1, "andc", andc, 0, 0, - 0,1, "nop", enop, 0, 0, - sf,1, "shal",shal,0,0, - sf,1, "shar",shar,0,0, - sf,1, "shll",shll,0,0, - sf,1, "shlr",shlr,0,0, - sf,1, "rotxl",rotxl,0,0, - sf,1, "rotxr",rotxr,0,0, - sf,1, "rotl",rotl,0,0, - sf,1, "rotr",rotr,0,0, - lf,1, "xor", log, "^",0, - lf,1, "and", log, "&",0, - lf,1, "or", log, "|",0, - lf,1,"not", ulog," ~",0, - lf,1,"neg", ulog," - ",0, - 0,1, "adds", adds, "dst = srca + srcb", 0, - 0,1, "subs", adds, "srca = -srca; dst = srcb + srca", 0, - af8,1, "add.b", add, "dst = srca + srcb", 8, - af16,1, "add.w", add, "dst = srca + srcb", 16, - af16,1, "sub.w", add, "srca = -srca; dst = srcb + srca", 16, - af8,1, "sub.b", add, "srca = -srca; dst = srcb + srca", 8, - af8,1, "addx", addx, 0, 8, - af8,1, "subx", subx, 0, 8, - af8,0, "cmp.b", cmp, 0, 8, - af16,0, "cmp.w", cmp, 0, 16, - 0,1, "sleep", esleep, 0, 0, - 0,0, "bpt", bpt, 0, 8, - nx,0, "divxu", divxu,0,0, - nx,0, "mulxu", mulxu,0,0, - mf8,1, "mov.b", mov, 0, 8, - mf16,1, "mov.w", mov, 0, 16, - 0, 0 - }; + { nx, 1, "bld", bit, "dst = srcb; c = (srcb>>srca)&1;", 8 } , + { nx, 1, "bild", bit, "dst = srcb; c = !((srcb>>srca)&1);", 8 } , + { nx, 1, "band", bit, "dst = srcb; c = C &&((srcb>>srca)&1);", 8 } , + { nx, 1, "biand", bit, "dst = srcb; c = C &&(!((srcb>>srca)&1));", 8 } , + { nx, 1, "bior", bit, "dst = srcb; c = C ||(!((srcb>>srca)&1));", 8 } , + { nx, 1, "bor", bit, "dst = srcb; c = C ||(((srcb>>srca)&1));", 8 } , + { nx, 1, "bixor", bit, "dst = srcb; c = C ^(!((srcb>>srca)&1));", 8 } , + { nx, 1, "bxor", bit, "dst = srcb; c = C ^(((srcb>>srca)&1));", 8 } , + { nx, 1, "bnot", bit, "dst = srcb ^ (1<<srca);", 8 } , + { nx, 1, "bclr", bit, "dst = srcb & ~(1<<srca);", 8 } , + { nx, 1, "bset", bit, "dst = srcb | (1<<srca);", 8 } , + { nx, 1, "bst", bit, "dst = (srcb & ~(1<<srca))| ((C)<<srca);", 8 } , + { nx, 1, "bist", bit, "dst = (srcb & ~(1<<srca))| ((!C)<<srca);", 8 } , + { nx, 1, "btst", bit, "dst = srcb; z = !((srcb>>srca)&1);", 8 } , + { icf, 0, "dec", dec, 0, 0 } , + { icf, 0, "inc", inc, 0, 0 } , + { saf, 1, "orc", setf, "|", 0 } , + { saf, 1, "xorc", setf, "^", 0 } , + { saf, 1, "andc", setf, "&", 0 } , + { nx, 1, "nop", nop, 0, 0 } , + { nx, 1, "bra", bra, "1", 0 } , + { nx, 1, "brn", bra, "0", 0 } , + { nx, 1, "bhi", bra, "(C||Z)==0", 0 } , + { nx, 1, "bls", bra, "(C||Z)==1", 0 } , + { nx, 1, "bcs", bra, "C==1", 0 } , + { nx, 1, "bcc", bra, "C==0", 0 } , + { nx, 1, "bpl", bra, "N==0", 0 } , + { nx, 1, "bmi", bra, "N==1", 0 } , + { nx, 1, "bvs", bra, "V==1", 0 } , + { nx, 1, "bvc", bra, "V==0", 0 } , + { nx, 1, "bge", bra, "(N^V)==0", 0 } , + { nx, 1, "bgt", bra, "(Z|(N^V))==0", 0 } , + { nx, 1, "blt", bra, "(N^V)==1", 0 } , + { nx, 1, "ble", bra, "(Z|(N^V))==1", 0 } , + { nx, 1, "beq", bra, "Z==1", 0 } , + { nx, 1, "bne", bra, "Z==0", 0 } , + { nx, 1, "bsr", bsr, "", 0 } , + { nx, 1, "jsr", jsr, 0, 0 } , + { nx, 1, "jmp", jmp, 0, 0 } , + { nx, 0, "rts", rts, 0, 0 } , + { nx, 1, "andc", andc, 0, 0 } , + { sf, 1, "shal", shal, 0, 0 } , + { sf, 1, "shar", shar, 0, 0 } , + { sf, 1, "shll", shll, 0, 0 } , + { sf, 1, "shlr", shlr, 0, 0 } , + { sf, 1, "rotxl", rotxl, 0, 0 } , + { sf, 1, "rotxr", rotxr, 0, 0 } , + { sf, 1, "rotl", rotl, 0, 0 } , + { sf, 1, "rotr", rotr, 0, 0 } , + { lf, 1, "xor", log, "^", 0 } , + { lf, 1, "and", log, "&", 0 } , + { lf, 1, "or", log, "|", 0 } , + { lf, 1, "not", ulog, " ~", 0 } , + { lf, 1, "neg", ulog, " - ", 0 } , + { nx, 1, "adds", adds, "dst = srca + srcb", 0 } , + { nx, 1, "subs", adds, "srca = -srca; dst = srcb + srca", 0 } , + { af8, 1, "add.b", add, "dst = srca + srcb", 8 } , + { af16, 1, "add.w", add, "dst = srca + srcb", 16 } , + { af16, 1, "sub.w", add, "srca = -srca; dst = srcb + srca", 16 } , + { af8, 1, "sub.b", add, "srca = -srca; dst = srcb + srca", 8 } , + { af8, 1, "addx", addx, 0, 8 } , + { af8, 1, "subx", subx, 0, 8 } , + { af8, 0, "cmp.b", cmp, 0, 8 } , + { af16, 0, "cmp.w", cmp, 0, 16 } , + { nx, 1, "sleep", esleep, 0, 0 } , + { nx, 0, "bpt", bpt, 0, 8 } , + { nx, 0, "divxu", divxu, 0, 0 } , + { nx, 0, "mulxu", mulxu, 0, 0 } , + { mf8, 1, "mov.b", mov, 0, 8 } , + { mf8, 1, "movtpe", mov, 0, 8 } , + { mf8, 1, "movfpe", mov, 0, 8 } , + { mf16, 1, "mov.w", mov, 0, 16 } , + { 0 } +}; +static +void edo (p) struct h8_opcode *p; { @@ -1078,28 +720,34 @@ edo (p) printf ("%s %s %s\n", cs, p->name, ce); for (i = 0; table[i].name; i++) - { - if (strcmp (table[i].name, p->name) == 0) { - printf ("{\n"); - if (table[i].decode) decode(p, 1,p->size); - printf ("cycles += %d;\n", p->time); - printf ("npc = pc + %d;\n", p->length); - table[i].func (p, table[i].arg, table[i].size); - if (table[i].decode) decode(p, 0,p->size); - if (table[i].ftype) printf(table[i].ftype); - else printf ("goto next;\n"); - printf ("}\n"); - return; + if (strcmp (table[i].name, p->name) == 0) + { + printf ("{\n"); + if (table[i].decode) + decode (p, 1, table[i].size); + printf ("cycles += %d;\n", p->time); + printf ("npc = pc + %d;\n", p->length); + table[i].func (p, table[i].arg, table[i].size); + if (table[i].decode) + decode (p, 0, table[i].size); + if (table[i].ftype) + printf (table[i].ftype); + else + printf ("goto next;\n"); + printf ("}\n"); + return; + } } - } printf ("%s not found %s\n", cs, ce); - printf("exception = SIGILL;\n"); + printf ("exception = SIGILL;\n"); printf ("break;\n"); } +static int owrite (i) + int i; { /* write if statements to select the right opcode */ struct h8_opcode **p; @@ -1203,194 +851,52 @@ owrite (i) return i; } -print_key (i) +static +void +remove_dups () { - int j; + struct h8_opcode *s; + struct h8_opcode *d; - printf ("%s", cs); - for (j = 0; j < 8; j++) + for (d = s = h8_opcodes; s->name; s++) { -/* printf ("(0x%02x ", keys[i].k[j]);*/ - if (keys[i].k[j] & B30) - printf ("B30"); - else if (keys[i].k[j] & B31) - printf ("B31"); - switch (keys[i].k[j]) + int doit = 1; + + if (strcmp (s->name, "push") == 0) + doit = 0; + if (strcmp (s->name, "bhs") == 0) + doit = 0; + if (strcmp (s->name, "blo") == 0) + doit = 0; + if (strcmp (s->name, "bt") == 0) + doit = 0; + if (strcmp (s->name, "bf") == 0) + doit = 0; + if (strcmp (s->name, "pop") == 0) + doit = 0; + if (doit) { - case KBIT: - printf ("KBIT"); - break; - case IMM3: - printf ("IMM3"); - break; - case RD8: - printf ("RD8"); - break; - case RD16: - printf ("RD16"); - break; - case RS8: - printf ("RS8"); - break; - case RS16: - printf ("RS16"); - break; - case IMM8: - printf ("IMM8"); - break; - case IMM16: - printf ("IMM16"); - break; - case CCR: - printf ("CCR"); - break; - case ABS8SRC: - printf ("ABS8SRC"); - break; - case ABS8DST: - printf ("ABS8SDST"); - break; - case DISP8: - printf ("DISP8"); - break; - case ABS16SRC: - printf ("ABS16SRC"); - break; - case ABS16OR8SRC: - printf ("ABS16OR8SRC"); - break; - case ABS16DST: - printf ("ABS16SDST"); - break; - case ABS16OR8DST: - printf ("ABS16OR8SDST"); - break; - case DISPSRC: - printf ("DISPSRC"); - break; - case DISPDST: - printf ("DISPSDST"); - break; - case DISPREG: - printf ("DISPREG"); - break; - case RDDEC: - printf ("RDDEC"); - break; - case RSINC: - printf ("RSINC"); - break; - case RDIND: - printf ("RDIND"); - break; - case RSIND: - printf ("RSIND"); - break; - case MEMIND: - printf ("MEMIND"); - break; - case ABS16ORREL8SRC: - printf ("ABS16ORREL8SRC"); - break; - case IGNORE: - printf ("IGNORE"); - break; - default: - printf ("**"); - break; + *d++ = *s; } - printf (" "); - } - printf ("%s\n", ce); -} - -dofetch (fetch) -int fetch; -{ - int i; - int done_for[PTWO]; - memset (done_for, 0, sizeof (done_for)); - printf ("switch (b0) {\n"); - for (i = 0; i < nkeys; i++) - { - struct h8_opcode *p; - struct h8_opcode *l = 0; - int k; - - printf ("%s KEY %d %s\n", cs,i,ce); - print_key (i); - - { - int j; - - l = 0; - for (p = h8_opcodes; p->name; p++) - { - int key[8]; - - if (p->idx == i && p->name != empty) - { - l = p; - if (done_for[p->sorted_key] != i + 1000) - { - done_for[p->sorted_key] = i + 1000; - printf ("case 0x%03x:\n", p->sorted_key); - printf("%s %s %s\n", cs, p->name, ce); - } - } - } - if (l) - { - - decode (l, fetch, l->size); - printf ("break;\n"); - } - else - printf (" /* NO */\n"); - } - } - printf ("}\n"); -} - -remove_dups() -{ - struct h8_opcode *s; - struct h8_opcode *d; - for (d = s = h8_opcodes; s->name; s++) - { - int doit = 1; - if (strcmp(s->name,"push") ==0) doit = 0; - if (strcmp(s->name,"pop") ==0) doit = 0; - if (doit) - { - *d++ = *s; } - } *d++ = *s++; } + +int main () { int i; -remove_dups(); - init (); - sortmodes (); + remove_dups (); + init (); -#if 0 - printf("%s fetch the args %s\n", cs,ce); - dofetch (1); -#endif - printf("%s do the operation %s\n", cs,ce); + printf ("%s do the operation %s\n", cs, ce); printf ("switch (b0) \n{\n"); for (i = 0; i < PTWO; i++) { i = owrite (i); } printf ("}\n"); -#if 0 - printf("%s store the result %s\n", cs,ce); - dofetch (0); -#endif return 0; } |