aboutsummaryrefslogtreecommitdiff
path: root/sim/z8k/writecode.c
diff options
context:
space:
mode:
Diffstat (limited to 'sim/z8k/writecode.c')
-rw-r--r--sim/z8k/writecode.c2011
1 files changed, 2011 insertions, 0 deletions
diff --git a/sim/z8k/writecode.c b/sim/z8k/writecode.c
new file mode 100644
index 0000000..8b4c868
--- /dev/null
+++ b/sim/z8k/writecode.c
@@ -0,0 +1,2011 @@
+
+/* generate instructions for Z8KSIM
+ Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+
+This file is part of Z8KSIM
+
+Z8KSIM is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+Z8KSIM is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Z8KZIM; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+/* This program generates the code which emulates each of the z8k
+ instructions
+
+ code goes into three files, tc-gen1.h, tc-gen2.h and tc-gen3.h.
+ which file being made depends upon the options
+
+ -1 tc-gen1.h contains the fully expanded code for some selected
+ opcodes, (those in the quick.c list)
+
+ -2 tc-gen2.h contains a list of pointers to functions, one for each
+ opcode. It points to functions in tc-gen3.h and tc-gen1.h
+ depending upon quick.c
+
+ -3 tc-gen3.h contains all the opcodes in unexpanded form.
+
+ -b3 tc-genb3.h same as -3 but for long pointers
+
+ -m regenerates list.c, which is an inverted list of opcodes to
+ pointers into the z8k dissassemble opcode table, it's just there
+ to makes things faster.
+ */
+
+/* steve chamberlain
+ sac@cygnus.com */
+
+#include "config.h"
+
+#include <ansidecl.h>
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+
+#define NICENAMES
+
+#define DEFINE_TABLE
+#include "../opcodes/z8k-opc.h"
+
+#define NOPS 500
+
+#define DIRTY_HACK 0 /* Enable if your gcc can't cope with huge tables */
+extern short z8k_inv_list[];
+struct opcode_value
+{
+ int n;
+ struct opcode_value *next;
+};
+
+#define NICENAMES
+int BIG;
+
+static char *reg_names[] =
+{"bad", "src", "dst", "aux_a", "aux_b", "aux_r", "aux_x"};
+
+#define IS_DST(x) ((x & 0xf) == 2)
+#define IS_SRC(x) ((x & 0xf)==1)
+#define SIZE_ADDRESS (BIG ? 8 : 4) /* number of nibbles in a ptr*/
+
+static int file;
+static int makelist;
+
+static int nibs = 0;
+
+static char *current_size;
+static char *current_name;
+static char current_word0[40];
+static char current_byte0[40];
+static char current_byte1[40];
+static int indent;
+static char *p;
+static char *d;
+
+struct opcode_value *list[NOPS];
+
+static opcode_entry_type *
+lookup_inst (what)
+ int what;
+{
+ if (makelist)
+ {
+
+ int nibl_index;
+ int nibl_matched;
+ unsigned short instr_nibl;
+ unsigned short tabl_datum, datum_class, datum_value;
+ char instr_nibbles[8];
+
+ opcode_entry_type *ptr = z8k_table;
+
+ nibl_matched = 0;
+
+ instr_nibbles[3] = (what >> 0) & 0xf;
+ instr_nibbles[2] = (what >> 4) & 0xf;
+ instr_nibbles[1] = (what >> 8) & 0xf;
+ instr_nibbles[0] = (what >> 12) & 0xf;
+
+ while (ptr->name)
+ {
+ nibl_matched = 1;
+ for (nibl_index = 0; nibl_index < 4 && nibl_matched; nibl_index++)
+ {
+ instr_nibl = instr_nibbles[nibl_index];
+
+ tabl_datum = ptr->byte_info[nibl_index];
+ datum_class = tabl_datum & CLASS_MASK;
+ datum_value = ~CLASS_MASK & tabl_datum;
+
+ switch (datum_class)
+ {
+ case CLASS_BIT_1OR2:
+ if (datum_value != (instr_nibl & ~0x2))
+ nibl_matched = 0;
+ break;
+
+ case CLASS_BIT:
+ if (datum_value != instr_nibl)
+ nibl_matched = 0;
+ break;
+ case CLASS_00II:
+ if (!((~instr_nibl) & 0x4))
+ nibl_matched = 0;
+ break;
+ case CLASS_01II:
+ if (!(instr_nibl & 0x4))
+ nibl_matched = 0;
+ break;
+ case CLASS_0CCC:
+ if (!((~instr_nibl) & 0x8))
+ nibl_matched = 0;
+ break;
+ case CLASS_1CCC:
+ if (!(instr_nibl & 0x8))
+ nibl_matched = 0;
+ break;
+ case CLASS_0DISP7:
+ if (!((~instr_nibl) & 0x8))
+ nibl_matched = 0;
+ nibl_index += 1;
+ break;
+ case CLASS_1DISP7:
+ if (!(instr_nibl & 0x8))
+ nibl_matched = 0;
+ nibl_index += 1;
+ break;
+ case CLASS_REGN0:
+ if (instr_nibl == 0)
+ nibl_matched = 0;
+ break;
+ default:
+ break;
+ }
+ }
+ if (nibl_matched)
+ {
+ return ptr;
+ }
+ ptr++;
+ }
+ return 0;
+ }
+ else
+ {
+
+ if (z8k_inv_list[what] < 0)
+ return 0;
+ return z8k_table + z8k_inv_list[what];
+ }
+}
+
+static char *
+insn_4 (n)
+ int n;
+{
+ switch (n)
+ {
+ case 1:
+ return "((iwords_0>>8) & 0xf)";
+ case 2:
+ return "((ibytes_1 >> 4) & 0xf)";
+ case 3:
+ return "((ibytes_1) & 0xf)";
+ case 4:
+ return "((ibytes_2>>4) & 0xf)";
+ case 5:
+ return "((ibytes_2) & 0xf)";
+ case 6:
+ return "((ibytes_3 >> 4) & 0xf)";
+ case 7:
+ return "((ibytes_3) & 0xf)";
+ default:
+ return "****";
+ }
+}
+
+char *
+ptr_mode ()
+{
+ if (BIG)
+ {
+ return "ptr_long";
+ }
+ return "word";
+}
+
+static
+char *
+ptr_size ()
+{
+ if (BIG)
+ return "4";
+ return "2";
+}
+
+static char *
+reg_n (x)
+ unsigned int x;
+{
+ return reg_names[x & 0xf];
+}
+
+char *
+stack_ptr ()
+{
+ return BIG ? "14" : "15";
+}
+
+char *
+mem ()
+{
+#if 0
+ return BIG ? "segmem" : "unsegmem";
+#else
+ return "mem";
+#endif
+}
+
+int
+match (a)
+ char *a;
+{
+ if (strncmp (p, a, strlen (a)) == 0)
+ {
+ p += strlen (a);
+ return 1;
+ }
+ return 0;
+}
+
+static
+void
+sub (y)
+ char *y;
+{
+ sprintf (d, "%s", y);
+ d += strlen (d);
+}
+
+static char *
+insn_16 (n)
+ int n;
+{
+ switch (n)
+ {
+ case 0:
+ return "(iwords_0)";
+ case 4:
+ return "(iwords_1)";
+ case 8:
+ return "(iwords_2)";
+ case 12:
+ return "(iwords_3)";
+ default:
+ return "****";
+ }
+}
+
+static
+char *
+insn_32 (n)
+ int n;
+{
+ switch (n)
+ {
+ case 0:
+ return "((iwords_0<<16) | (iwords_1))";
+ case 4:
+ return "((iwords_1<<16) | (iwords_2))";
+ case 8:
+ return "((iwords_2<<16) | (iwords_3))";
+ default:
+ return "****";
+ }
+}
+
+static char *
+size_name (x)
+ int x;
+{
+ switch (x)
+ {
+ case 8:
+ return "byte";
+ case 16:
+ return "word";
+ case 32:
+ return "long";
+ case 64:
+ return "quad";
+ }
+ return "!!";
+}
+
+/*VARARGS*/
+void
+emit (string, a1, a2, a3, a4, a5)
+ char *string;
+ char* a1;
+ char* a2;
+ char* a3;
+ char* a4;
+ char* a5;
+{
+ int indent_inc = 0;
+ int indent_dec = 0;
+ int i;
+ char buffer[1000];
+
+ d = buffer;
+ p = string;
+
+ while (*p)
+ {
+ if (match ("<fop>"))
+ {
+ if (BIG)
+ {
+ sub ("bfop");
+ }
+ else
+ {
+ sub ("sfop");
+ }
+ }
+ else if (match ("<iptr>"))
+ {
+ if (BIG)
+ {
+ switch (nibs)
+ {
+ case 4:
+ sub ("(((iwords_1 << 8) | (iwords_2)) & 0x7fffff)");
+ break;
+ default:
+ sub ("fail(context,124)");
+ break;
+ }
+ }
+ else
+ {
+ switch (nibs)
+ {
+ case 4:
+ sub ("iwords_1");
+ break;
+ default:
+ sub ("fail(context,123)");
+ break;
+ }
+ }
+ }
+ else if (match ("<name>"))
+ {
+ sub (current_name);
+ }
+ else if (match ("<size>"))
+ {
+ sub (current_size);
+ }
+ else if (match ("<insn_4>"))
+ {
+ sub (insn_4 (nibs));
+ }
+ else if (match ("<insn_16>"))
+ {
+ sub (insn_16 (nibs));
+ }
+ else if (match ("<insn_32>"))
+ {
+ sub (insn_32 (nibs));
+ }
+ else if (match ("iwords_0"))
+ {
+ sub (current_word0);
+ }
+ else if (match ("ibytes_0"))
+ {
+ sub (current_byte0);
+ }
+ else if (match ("<ibytes_1>"))
+ {
+ sub (current_byte1);
+ }
+ else if (match ("<next_size>"))
+ {
+ if (strcmp (current_size, "word") == 0)
+ sub ("long");
+ if (strcmp (current_size, "byte") == 0)
+ sub ("word");
+ else if (strcmp (current_size, "long") == 0)
+ sub ("quad");
+ else
+ abort ();
+ }
+ else if (match ("<addr_type>"))
+ {
+ if (BIG)
+ sub ("unsigned long");
+ else
+ sub ("unsigned short");
+ }
+
+ else if (match ("<c_size>"))
+ {
+ if (strcmp (current_size, "word") == 0)
+ sub ("short");
+ else if (strcmp (current_size, "byte") == 0)
+ sub ("char");
+ else if (strcmp (current_size, "long") == 0)
+ sub ("long");
+ else
+ abort ();
+ }
+
+ else if (match ("<pc>"))
+ {
+ sub ("pc");
+ }
+ else if (match ("<mem>"))
+ {
+ sub (mem ());
+ }
+ else if (match ("<sp>"))
+ {
+ sub (stack_ptr ());
+ }
+ else if (match ("<ptr_size>"))
+ {
+ sub (ptr_size ());
+ }
+ else if (match ("<ptr_mode>"))
+ {
+ sub (ptr_mode ());
+ }
+ else if (match ("<insn_8>"))
+ {
+ switch (nibs)
+ {
+ case 2:
+ sub ("(iwords_0&0xff)");
+ break;
+ case 4:
+ sub ("(iwords_1>>8)");
+ break;
+ case 6:
+ sub ("(iwords_1&0xff)");
+ break;
+ case 8:
+ sub ("(iwords_2>>8)");
+ break;
+ case 12:
+ sub ("(/* WHO */iwords_3&0xff)");
+ break;
+ default:
+ abort ();
+ }
+ }
+ else
+ {
+ if (*p == '{')
+ indent_inc++;
+ if (*p == '}')
+ indent_dec++;
+ *d++ = *p;
+ p++;
+ }
+ }
+ *d++ = 0;
+ indent -= indent_dec;
+ for (i = 0; i < indent; i++)
+ printf ("\t");
+ indent += indent_inc;
+ printf (buffer, a1, a2, a3, a4, a5);
+
+}
+
+/* fetch the lvalues of the operands */
+void
+info_args (p)
+ opcode_entry_type *p;
+{
+ unsigned int *s;
+
+ int done_one_imm8 = 0;
+
+ /* int done_read = 4;*/
+ s = p->byte_info;
+ nibs = 0;
+ while (*s)
+ {
+ switch (*s & CLASS_MASK)
+ {
+ case CLASS_BIT_1OR2:
+ emit ("register unsigned int imm_src=(<insn_4>& 2)?2:1;\n");
+ break;
+ case CLASS_BIT:
+ /* Just ignore these, we've already decoded this bit */
+ nibs++;
+ break;
+ case CLASS_REGN0:
+ case CLASS_REG:
+ /* this nibble tells us which register to use as an arg,
+ if we've already gobbled the nibble we know what to use */
+ {
+ int regname = *s & 0xf;
+
+ emit ("register unsigned int reg_%s=<insn_4>;\n",
+ reg_names[regname]);
+
+ nibs++;
+ }
+ break;
+ case CLASS_ADDRESS:
+ emit ("register unsigned base_%s=<iptr>;\n", reg_n (*s));
+
+ nibs += SIZE_ADDRESS;
+
+ break;
+ case CLASS_01II:
+ case CLASS_00II:
+ emit ("register unsigned int imm_src=<insn_4>&0x2;\n");
+ nibs++;
+ break;
+ case CLASS_FLAGS:
+ emit ("register unsigned int imm_src=<insn_4>;\n");
+ nibs++;
+break;
+ case CLASS_IMM:
+ /* Work out the size of the think to fetch */
+
+ {
+ switch (*s & ~CLASS_MASK)
+ {
+ case ARG_IMM16:
+ emit ("register unsigned imm_src=<insn_16>;\n");
+ nibs += 4;
+ break;
+ case ARG_IMM32:
+ emit ("register unsigned int imm_src= %s;\n", insn_32 (nibs));
+ nibs += 8;
+ break;
+ case ARG_IMM4:
+ emit ("register unsigned int imm_src=<insn_4>;\n");
+ nibs++;
+ break;
+ case ARG_IMM2:
+ emit ("register unsigned int imm_src=<insn_4> & 0x2;\n");
+ nibs++;
+ break;
+
+ case ARG_IMM4M1:
+ emit ("register unsigned int imm_src=(<insn_4> + 1);\n");
+ nibs++;
+ break;
+ case ARG_IMM_1:
+ emit ("register unsigned int imm_src=1;\n");
+ break;
+ case ARG_IMM_2:
+ emit ("register unsigned int imm_src=2;\n");
+ break;
+ case ARG_NIM8:
+ emit ("register unsigned int imm_src=-<insn_8>;\n");
+ nibs += 2;
+ break;
+ case ARG_IMM8:
+ if (!done_one_imm8)
+ {
+ emit ("register unsigned int imm_src=<insn_8>;\n");
+ nibs += 2;
+ done_one_imm8 = 1;
+ }
+ break;
+ default:
+ emit ("register int fail%d=fail(context,1);\n", nibs);
+ break;
+ }
+ break;
+
+ case CLASS_DISP8:
+ /* We can't use `(char)' since char might be unsigned.
+ We can't use `(signed char)' because the compiler might be K&R.
+ This seems safe, since it only assumes that bytes are 8
+ bits. */
+ emit ("register unsigned int oplval_dst=((ibytes_1 << (sizeof (int) * 8 - 8)) >> (sizeof (int) * 8 - 9)) + pc;\n");
+#if 0
+ /* Original code: fails if characters are unsigned. */
+ emit ("register unsigned int oplval_dst=(((char)ibytes_1)<<1) + pc;\n");
+#endif
+ nibs += 2;
+ break;
+ case CLASS_CC:
+ emit ("register unsigned int op_cc=<insn_4>;\n");
+ nibs++;
+ break;
+ default:
+ emit ("register int FAIL%d=fail(context,2);\n", nibs);
+ break;
+ }
+ ;
+ /* work out how to fetch the immediate value */
+ }
+
+ s++;
+ }
+}
+
+void
+info_special (p, getdst, nostore, before, nosrc)
+ opcode_entry_type *p;
+ int *getdst;
+ int *nostore;
+ int *before;
+ int *nosrc;
+{
+ switch (p->opcode)
+ {
+ case OPC_exts:
+ case OPC_extsb:
+ case OPC_extsl:
+ *nostore = 1;
+ *nosrc = 1;
+ break;
+ case OPC_ldm:
+ *nostore = 1;
+ *nosrc = 1;
+ break;
+ case OPC_negb:
+ case OPC_neg:
+ case OPC_sla:
+ case OPC_slab:
+ case OPC_slal:
+ case OPC_sda:
+ case OPC_sdab:
+ case OPC_sdal:
+ case OPC_com:
+ case OPC_comb:
+ case OPC_adc:
+ case OPC_sbc:
+ case OPC_nop:
+ case OPC_adcb:
+ case OPC_add:
+ case OPC_addb:
+ case OPC_addl:
+ case OPC_inc:
+ case OPC_sub:
+ case OPC_subb:
+ case OPC_subl:
+ case OPC_and:
+ case OPC_andb:
+ case OPC_xorb:
+ case OPC_xor:
+ break;
+
+ case OPC_mult:
+ case OPC_multl:
+ case OPC_div:
+ case OPC_divl:
+
+ *nostore = 1;
+ break;
+
+ case OPC_testb:
+ case OPC_test:
+ case OPC_testl:
+ case OPC_cp:
+ case OPC_cpb:
+ case OPC_cpl:
+ case OPC_bit:
+ *nostore = 1;
+ *before = 0;
+ break;
+
+ case OPC_bpt:
+ case OPC_jr:
+ case OPC_jp:
+ case OPC_ret:
+ case OPC_call:
+ case OPC_tcc:
+ *nosrc = 1;
+ *nostore = 1;
+ *before = 1;
+ break;
+ case OPC_sc:
+ *nostore = 1;
+ *before = 0;
+ break;
+ case OPC_clrb:
+ case OPC_clr:
+ *before = 1;
+ *nosrc = 1;
+ break;
+ case OPC_ldi:
+ case OPC_ldib:
+ case OPC_lddb:
+ case OPC_ldd:
+
+ *before = 1;
+ *nostore = 1;
+ *nosrc = 1;
+ break;
+ case OPC_ldk:
+ case OPC_ld:
+ case OPC_ldb:
+ case OPC_ldl:
+ *before = 1;
+ *getdst = 0;
+ break;
+ case OPC_push:
+ case OPC_pushl:
+ case OPC_pop:
+ case OPC_popl:
+ *before = 1;
+ *getdst = 0;
+ break;
+ case OPC_lda:
+ *nosrc = 1;
+ break;
+ }
+}
+
+/* calculate the lvalues required for the opcode */
+void
+info_lvals (p)
+ opcode_entry_type *p;
+{
+ /* emit code to work out lvalues, if any */
+ unsigned int *i = p->arg_info;
+
+ while (*i)
+ {
+ current_name = reg_n (*i);
+ current_size = size_name (p->type);
+ switch (*i & CLASS_MASK)
+ {
+ case CLASS_X:
+ /* address(reg) */
+ emit ("register <addr_type> oplval_<name>= ((base_<name> + (short)get_word_reg(context,reg_<name>)) & 0xffff) + (base_<name> & ~0xffff);\n");
+ break;
+ case CLASS_IR:
+ /* Indirect register */
+ emit ("register int oplval_<name> = get_<ptr_mode>_reg(context,reg_<name>);\n");
+ break;
+ case CLASS_DA:
+ emit ("register int oplval_<name>=base_<name>;\n");
+ break;
+ case CLASS_IMM:
+ case CLASS_REG_WORD:
+ case CLASS_REG_LONG:
+ case CLASS_REG_BYTE:
+ case CLASS_PR:
+ break;
+ case CLASS_BA:
+ emit ("register int oplval_<name> = get_<ptr_mode>_reg(context,reg_<name>) + (short)(imm_src);\n");
+ break;
+ case CLASS_BX:
+ emit ("register int oplval_<name> = get_<ptr_mode>_reg(context,reg_<name>)\n");
+ emit (" + get_word_reg(context,reg_aux_x);\n");
+ break;
+ }
+ i++;
+ }
+}
+
+/* emit code to fetch the args from calculated lvalues */
+int allregs;
+void
+info_fetch (p, getdst)
+ opcode_entry_type *p;
+ int getdst;
+{
+ unsigned int *i = p->arg_info;
+ int had_src = 0;
+
+ allregs = 1;
+ while (*i)
+ {
+
+ current_name = reg_n (*i);
+ current_size = size_name (p->type);
+ switch (*i & CLASS_MASK)
+ {
+ case CLASS_X:
+ case CLASS_IR:
+ case CLASS_BA:
+ case CLASS_BX:
+ case CLASS_DA:
+ if (!getdst && IS_DST (*i))
+ break;
+ emit ("register int op_<name>= get_<size>_<mem>_da(context,oplval_<name>);\n");
+ allregs = 0;
+ break;
+ case CLASS_IMM:
+ if (!had_src)
+ {
+ if (p->opcode == OPC_out ||
+ p->opcode == OPC_outb ||
+ p->opcode == OPC_sout ||
+ p->opcode == OPC_soutb)
+ {
+ /* The imm is a dest here */
+ emit ("register int op_dst = imm_src;\n");
+ }
+ else
+ {
+ emit ("register int op_src = imm_src;\n");
+ }
+ }
+ break;
+ case CLASS_REG_QUAD:
+ if (!getdst && IS_DST (*i))
+ break;
+ had_src |= IS_SRC (*i);
+ emit ("UDItype op_<name> ;\n");
+
+ break;
+ case CLASS_REG_WORD:
+ if (!getdst && IS_DST (*i))
+ break;
+ had_src |= IS_SRC (*i);
+ emit ("register int op_<name> = get_word_reg(context,reg_<name>);\n");
+ break;
+
+ case CLASS_REG_LONG:
+ if (!getdst && IS_DST (*i))
+ break;
+ had_src |= IS_SRC (*i);
+ emit ("register int op_<name> = get_long_reg(context,reg_<name>);\n");
+ break;
+ case CLASS_REG_BYTE:
+ if (!getdst && IS_DST (*i))
+ break;
+ had_src |= IS_SRC (*i);
+ emit ("register int op_<name> = get_byte_reg(context,reg_<name>);\n");
+ break;
+ }
+ i++;
+ }
+}
+
+static void
+normal_flags (p, s, neg)
+ opcode_entry_type *p;
+ char *s;
+{
+ emit (" %s;\n", s);
+ emit ("NORMAL_FLAGS(context,%d, tmp, op_dst, op_src,%d); \n", p->type,neg);
+}
+
+static void
+test_normal_flags (p, s, opt)
+ opcode_entry_type *p;
+ char *s;
+ int opt;
+{
+ emit (" %s;\n", s);
+ if (0 && opt)
+ {
+ emit ("context->broken_flags = TST_FLAGS;\n");
+ emit ("context->size = %d;\n", p->type);
+ }
+ else
+ {
+ emit ("TEST_NORMAL_FLAGS(context,%d, tmp); \n", p->type);
+ }
+
+}
+
+static void
+optimize_normal_flags (p, s,neg)
+ opcode_entry_type *p;
+ char *s;
+{
+ emit (" %s;\n", s);
+#if 0
+ emit ("context->broken_flags = CMP_FLAGS;\n");
+#else
+ emit ("NORMAL_FLAGS(context,%d, tmp, op_dst, op_src,%d); \n", p->type, neg);
+#endif
+}
+
+static
+void
+jp (p)
+ opcode_entry_type *p;
+{
+
+ emit ("if(op_cc == 8 || COND(context,op_cc)) pc = oplval_dst;\n");
+}
+
+static void
+jr (p)
+ opcode_entry_type *p;
+{
+ emit ("if(op_cc == 8 || COND(context,op_cc)) pc = oplval_dst;\n");
+}
+
+static void
+ret (p)
+ opcode_entry_type *p;
+{
+ emit ("if(op_cc == 8 || COND(context,op_cc))\n{\n");
+ emit ("pc = get_<ptr_mode>_<mem>_ir(context,<sp>);\n");
+ emit ("put_<ptr_mode>_reg(context,<sp>, get_<ptr_mode>_reg(context,<sp>) + <ptr_size>);\n");
+ emit ("};\n");
+}
+
+static void
+call (p)
+ opcode_entry_type *p;
+{
+ emit ("put_<ptr_mode>_reg(context,<sp>,tmp = get_<ptr_mode>_reg(context,<sp>) - <ptr_size>);\n");
+ emit ("put_<ptr_mode>_<mem>_da(context,tmp, pc);\n");
+ emit ("pc = oplval_dst;\n");
+}
+
+static void
+push (p)
+ opcode_entry_type *p;
+{
+ emit ("tmp = op_src;\n");
+ emit ("oplval_dst -= %d;\n", p->type / 8);
+ emit ("put_<ptr_mode>_reg(context,reg_dst, oplval_dst);\n");
+}
+
+static void
+pop (p)
+ opcode_entry_type *p;
+{
+ emit ("tmp = op_src;\n");
+ emit ("put_<ptr_mode>_reg(context,reg_src, oplval_src + %d);\n", p->type / 8);
+}
+
+static void
+ld (p)
+ opcode_entry_type *p;
+{
+ emit ("tmp = op_src;\n");
+}
+
+static void
+sc ()
+{
+ emit ("support_call(context,imm_src);\n");
+}
+
+static void
+bpt ()
+{
+ emit ("pc -=2; \n");
+ emit ("context->exception = SIM_BREAKPOINT;\n");
+}
+
+static void
+ldi (p, size, inc)
+ opcode_entry_type *p;
+ int size;
+ int inc;
+{
+ int dinc = (size / 8) * inc;
+
+ current_size = size_name (size);
+ emit ("{ \n");
+ emit ("int type = %s;\n", insn_4 (7));
+ emit ("int rs = get_<ptr_mode>_reg(context,reg_src);\n");
+ emit ("int rd = get_<ptr_mode>_reg(context,reg_dst);\n");
+ emit ("int rr = get_word_reg(context,reg_aux_r);\n");
+ emit ("do {\n");
+ emit ("put_<size>_<mem>_da(context,rd, get_<size>_<mem>_da(context,rs));\n");
+ emit ("rd += %d;\n", dinc);
+ emit ("rs += %d;\n", dinc);
+ emit ("rr --;\n");
+ emit ("context->cycles += 9;\n");
+ emit ("} while (!type && rr != 0 && context->exception <= 1);\n");
+ emit ("if (context->exception>1) pc -=4;\n");
+ emit ("put_<ptr_mode>_reg(context,reg_src, rs);\n");
+ emit ("put_<ptr_mode>_reg(context,reg_dst, rd);\n");
+ emit ("put_word_reg(context,reg_aux_r, rr);\n");
+ emit ("}\n");
+
+}
+
+static void
+shift (p, arith)
+ opcode_entry_type *p;
+ int arith;
+{
+
+ /* We can't use `(char)' since char might be unsigned.
+ We can't use `(signed char)' because the compiler might be K&R.
+ This seems safe, since it only assumes that bytes are 8 bits. */
+ emit ("op_src = (op_src << (sizeof (int) * 8 - 8)) >> (sizeof (int) * 8 - 8);\n");
+#if 0
+ /* Original code: fails if characters are unsigned. */
+ emit ("op_src = (char)op_src;\n");
+#endif
+ emit ("if (op_src < 0) \n");
+ emit ("{\n");
+ emit ("op_src = -op_src;\n");
+ emit ("op_dst = (%s <c_size>)op_dst;\n", arith ? "" : "unsigned");
+ emit ("tmp = (%s op_dst) >> op_src;\n", arith ? "" : "(unsigned)");
+ emit ("context->carry = op_dst >> (op_src-1);\n", p->type);
+ emit ("}\n");
+ emit ("else\n");
+ emit ("{\n");
+ emit ("tmp = op_dst << op_src;\n");
+ emit ("context->carry = op_dst >> (%d - op_src);\n", p->type);
+ emit ("}\n");
+ emit ("context->zero = (<c_size>)tmp == 0;\n");
+ emit ("context->sign = (int)((<c_size>)tmp) < 0;\n");
+ emit ("context->overflow = ((int)tmp < 0) != ((int)op_dst < 0);\n");
+ emit ("context->cycles += 3*op_src;\n");
+ emit ("context->broken_flags = 0;\n");
+
+}
+
+static void
+rotate (p, through_carry, size, left)
+ opcode_entry_type *p;
+ int through_carry;
+ int size;
+ int left;
+{
+
+ if (!left)
+ {
+ emit ("while (op_src--) {\n");
+ emit ("int rotbit;\n");
+ emit ("rotbit = op_dst & 1;\n");
+ emit ("op_dst = ((unsigned)op_dst) >> 1;\n");
+
+ if (through_carry)
+ {
+ emit ("op_dst |= context->carry << %d;\n", size - 1);
+ }
+ else
+ {
+ emit ("op_dst |= rotbit << %d;\n", size - 1);
+ }
+ emit ("context->carry = rotbit;\n");
+ emit ("}\n");
+ }
+ else
+ {
+ emit ("while (op_src--) {\n");
+ emit ("int rotbit;\n");
+
+ emit ("rotbit = (op_dst >> (%d))&1;\n", size - 1);
+ emit ("op_dst <<=1;\n");
+ if (through_carry)
+ {
+ emit ("if (context->carry) op_dst |=1;\n");
+ }
+ else
+ {
+ emit ("if (rotbit) op_dst |= 1;\n");
+ }
+ emit ("context->carry = rotbit;\n");
+ emit ("}\n");
+ }
+ emit ("tmp = (<c_size>)op_dst;\n");
+ emit ("context->zero = tmp == 0;\n");
+ emit ("context->sign = (int)tmp < 0;\n");
+ emit ("context->overflow = ((int)tmp < 0) != ((int)op_dst < 0);\n");
+ emit ("context->cycles += 3*op_src;\n");
+ emit ("context->broken_flags = 0;\n");
+
+}
+
+static void
+adiv (p)
+ opcode_entry_type *p;
+{
+ emit ("if (op_src==0)\n");
+ emit ("{\n");
+ emit ("context->exception = SIM_DIV_ZERO;\n");
+ emit ("}\n");
+ emit ("else\n");
+ emit ("{\n");
+
+ if (p->type == 32)
+ {
+ emit ("op_dst.low = (int)get_long_reg(context,reg_dst+2);\n");
+ emit ("op_dst.high = (int)get_long_reg(context,reg_dst+0);\n");
+#ifdef __GNUC__
+ emit ("tmp = (((long long)op_dst.high << 32) + (op_dst.low)) / (int)op_src;\n");
+#else
+ emit ("tmp = (long)op_dst.low / (int)op_src;\n");
+#endif
+ emit ("put_long_reg(context,reg_dst+2, tmp);\n");
+#ifdef __GNUC__
+ emit ("put_long_reg(context,reg_dst, (((long long)op_dst.high << 32) + (op_dst.low)) %% (int)op_src);\n");
+#else
+ emit ("put_long_reg(context,reg_dst, (int)op_dst.low %% (int)op_src);\n");
+#endif
+
+ emit ("context->zero = op_src == 0 || (op_dst.low==0 && op_dst.high==0);\n");
+ }
+ else
+ {
+ emit ("tmp = (long)op_dst / (short)op_src;\n");
+ emit ("put_word_reg(context,reg_dst+1, tmp);\n");
+ emit ("put_word_reg(context,reg_dst, (long) op_dst %% (short)op_src);\n");
+ emit ("context->zero = op_src == 0 || op_dst==0;\n");
+ }
+
+ emit ("context->sign = (int)tmp < 0;\n");
+ emit ("context->overflow =(tmp & 0x%x) != 0;\n",
+ ~((1 << (p->type)) - 1));
+ emit ("context->carry = (tmp & 0x%x) != 0;\n",
+ ~(1 << (p->type)));
+
+ emit ("}\n");
+}
+
+static void
+dobit (p)
+opcode_entry_type *p;
+{
+ emit("context->zero = (op_dst & (1<<op_src))==0;\n");
+ emit("context->broken_flags = 0;\n");
+}
+static void
+doset (p, v)
+opcode_entry_type*p;
+int v;
+{
+ if (v)
+ emit (" tmp = op_dst | (1<< op_src);\n");
+ else
+ emit (" tmp = op_dst & ~(1<< op_src);\n");
+}
+
+static void
+mult (p)
+ opcode_entry_type *p;
+{
+
+ if (p->type == 32)
+ {
+ emit ("op_dst.low = get_long_reg(context,reg_dst+2);\n");
+ emit ("tmp = op_dst.low * op_src;\n");
+ emit ("put_long_reg(context,reg_dst+2, tmp);\n");
+ emit ("put_long_reg(context,reg_dst, 0);\n");
+ }
+ else
+ {
+ emit ("op_dst = get_word_reg(context,reg_dst+1);\n");
+ emit ("tmp = op_dst * op_src;\n");
+ emit ("put_long_reg(context,reg_dst, tmp);\n");
+ }
+
+ emit ("context->sign = (int)tmp < 0;\n");
+ emit ("context->overflow =0;\n");
+ emit ("context->carry = (tmp & 0x%x) != 0;\n", ~((1 << (p->type)) - 1));
+ emit ("context->zero = tmp == 0;\n");
+
+}
+
+static void
+exts (p)
+ opcode_entry_type *p;
+{
+ /* Fetch the ls part of the src */
+ current_size = size_name (p->type * 2);
+
+ if (p->type == 32)
+ {
+ emit ("tmp= get_long_reg(context,reg_dst+2);\n");
+ emit ("if (tmp & (1<<%d)) {\n", p->type - 1);
+ emit ("put_long_reg(context,reg_dst, 0xffffffff);\n");
+ emit ("}\n");
+ emit ("else\n");
+ emit ("{\n");
+ emit ("put_long_reg(context,reg_dst, 0);\n");
+ emit ("}\n");
+ }
+ else
+ {
+ emit ("tmp= get_<size>_reg(context,reg_dst);\n");
+ emit ("if (tmp & (1<<%d)) {\n", p->type - 1);
+ emit ("tmp |= 0x%x;\n", ~((1 << p->type) - 1));
+ emit ("}\n");
+ emit ("else\n");
+ emit ("{\n");
+
+ emit ("tmp &= 0x%x;\n", ((1 << p->type) - 1));
+ emit ("}\n");
+ emit ("put_<size>_reg(context,reg_dst, tmp);\n");
+ }
+}
+doflag(on)
+int on;
+{
+ /* Load up the flags */
+ emit(" COND (context, 0x0b);\n");
+
+ if (on)
+ emit ("{ int on =1;\n ");
+ else
+ emit ("{ int on =0;\n ");
+
+ emit ("if (imm_src & 1)\n");
+ emit ("PSW_OVERFLOW = on;\n");
+
+ emit ("if (imm_src & 2)\n");
+ emit ("PSW_SIGN = on;\n");
+
+ emit ("if (imm_src & 4)\n");
+ emit ("PSW_ZERO = on;\n");
+
+ emit ("if (imm_src & 8)\n");
+ emit ("PSW_CARRY = on;\n");
+ emit("}\n");
+
+
+}
+/* emit code to perform operation */
+void
+info_docode (p)
+ opcode_entry_type *p;
+{
+ switch (p->opcode)
+ {
+ case OPC_clr:
+ case OPC_clrb:
+ emit ("tmp = 0;\n");
+ break;
+ case OPC_ex:
+ case OPC_exb:
+
+ emit ("tmp = op_src; \n");
+ if (allregs)
+ {
+ emit ("put_<size>_reg(context,reg_src, op_dst);\n");
+ }
+ else
+ {
+ emit ("put_<size>_mem_da(context, oplval_src, op_dst);\n");
+ }
+ break;
+ case OPC_adc:
+ case OPC_adcb:
+ normal_flags (p, "op_src += COND(context,7);tmp = op_dst + op_src ;",0);
+ break;
+ case OPC_sbc:
+ normal_flags (p, "op_src += COND(context,7);tmp = op_dst - op_src ;",1);
+ break;
+ case OPC_nop:
+ break;
+ case OPC_com:
+ case OPC_comb:
+ test_normal_flags (p, "tmp = ~ op_dst", 1);
+ break;
+ case OPC_and:
+ case OPC_andb:
+ test_normal_flags (p, "tmp = op_dst & op_src", 1);
+ break;
+ case OPC_xor:
+ case OPC_xorb:
+ test_normal_flags (p, "tmp = op_dst ^ op_src", 1);
+ break;
+ case OPC_or:
+ case OPC_orb:
+ test_normal_flags (p, "tmp = op_dst | op_src", 1);
+ break;
+ case OPC_sla:
+ case OPC_slab:
+ case OPC_slal:
+ case OPC_sda:
+ case OPC_sdab:
+ case OPC_sdal:
+ shift (p, 1);
+ break;
+
+ case OPC_sll:
+ case OPC_sllb:
+ case OPC_slll:
+ case OPC_sdl:
+ case OPC_sdlb:
+ case OPC_sdll:
+ shift (p, 0);
+ break;
+ case OPC_rl:
+ rotate (p, 0, 16, 1);
+ break;
+ case OPC_rlb:
+ rotate (p, 0, 8, 1);
+ break;
+ case OPC_rr:
+ rotate (p, 0, 16, 0);
+ break;
+ case OPC_rrb:
+ rotate (p, 0, 8, 0);
+ break;
+ case OPC_rrc:
+ rotate (p, 1, 16, 0);
+ break;
+ case OPC_rrcb:
+ rotate (p, 1, 8, 0);
+ break;
+ case OPC_rlc:
+ rotate (p, 1, 16, 1);
+ break;
+ case OPC_rlcb:
+ rotate (p, 1, 8, 1);
+ break;
+
+ case OPC_extsb:
+ case OPC_exts:
+ case OPC_extsl:
+ exts (p);
+ break;
+ case OPC_add:
+ case OPC_addb:
+ case OPC_addl:
+ case OPC_inc:
+ case OPC_incb:
+ optimize_normal_flags (p, "tmp = op_dst + op_src",0);
+ break;
+ case OPC_testb:
+ case OPC_test:
+ case OPC_testl:
+ test_normal_flags (p, "tmp = op_dst", 0);
+ break;
+ case OPC_cp:
+ case OPC_cpb:
+ case OPC_cpl:
+ normal_flags (p, "tmp = op_dst - op_src",1);
+ break;
+ case OPC_negb:
+ case OPC_neg:
+ emit ("{\n");
+ emit ("int op_src = -op_dst;\n");
+ emit ("op_dst = 0;\n");
+ optimize_normal_flags (p, "tmp = op_dst + op_src;\n",1);
+ emit ("}");
+ break;
+
+ case OPC_sub:
+ case OPC_subb:
+ case OPC_subl:
+ case OPC_dec:
+ case OPC_decb:
+ optimize_normal_flags (p, "tmp = op_dst - op_src",1);
+ break;
+ case OPC_bpt:
+ bpt ();
+ break;
+ case OPC_jr:
+ jr (p);
+ break;
+ case OPC_sc:
+ sc ();
+ break;
+ case OPC_jp:
+ jp (p);
+ break;
+ case OPC_ret:
+ ret (p);
+ break;
+ case OPC_call:
+ call (p);
+ break;
+ case OPC_tcc:
+ case OPC_tccb:
+ emit ("if(op_cc == 8 || COND(context,op_cc)) put_word_reg(context,reg_dst, 1);\n");
+ break;
+ case OPC_lda:
+ emit ("tmp = oplval_src; \n");
+ /*(((oplval_src) & 0xff0000) << 8) | (oplval_src & 0xffff); \n");*/
+ break;
+ case OPC_ldk:
+ case OPC_ld:
+
+ case OPC_ldb:
+ case OPC_ldl:
+ ld (p);
+ break;
+ case OPC_ldib:
+ ldi (p, 8, 1);
+ break;
+ case OPC_ldi:
+ ldi (p, 16, 1);
+ break;
+
+ case OPC_lddb:
+ ldi (p, 8, -1);
+ break;
+ case OPC_ldd:
+ ldi (p, 16, -1);
+ break;
+
+ case OPC_push:
+ case OPC_pushl:
+ push (p);
+ break;
+
+ case OPC_div:
+ case OPC_divl:
+ adiv (p);
+ break;
+ case OPC_mult:
+ case OPC_multl:
+ mult (p);
+ break;
+ case OPC_pop:
+ case OPC_popl:
+ pop (p);
+ break;
+ case OPC_set:
+ doset (p,1);
+ break;
+ case OPC_res:
+ doset (p,0);
+ break;
+ case OPC_bit:
+ dobit(p);
+ break;
+ case OPC_resflg:
+ doflag(0);
+ break;
+ case OPC_setflg:
+ doflag(1);
+ break;
+ default:
+
+ emit ("tmp = fail(context,%d);\n", p->opcode);
+ break;
+ }
+}
+
+/* emit code to store result in calculated lvalue */
+
+void
+info_store (p)
+ opcode_entry_type *p;
+{
+ unsigned int *i = p->arg_info;
+
+ while (*i)
+ {
+ current_name = reg_n (*i);
+ current_size = size_name (p->type);
+
+ if (IS_DST (*i))
+ {
+ switch (*i & CLASS_MASK)
+ {
+ case CLASS_PR:
+ emit ("put_<ptr_mode>_reg(context,reg_<name>, tmp);\n");
+ break;
+ case CLASS_REG_LONG:
+ case CLASS_REG_WORD:
+ case CLASS_REG_BYTE:
+
+ emit ("put_<size>_reg(context,reg_<name>,tmp);\n");
+ break;
+ case CLASS_X:
+ case CLASS_IR:
+ case CLASS_DA:
+ case CLASS_BX:
+ case CLASS_BA:
+
+ emit ("put_<size>_<mem>_da(context,oplval_<name>, tmp);\n");
+ break;
+ case CLASS_IMM:
+ break;
+ default:
+ emit ("abort(); ");
+ break;
+ }
+
+ }
+ i++;
+ }
+}
+
+static
+void
+mangle (p, shortcut, value)
+ opcode_entry_type *p;
+ int shortcut;
+ int value;
+{
+ int nostore = 0;
+ int extra;
+ int getdst = 1;
+ int before = 0;
+ int nosrc = 0;
+
+ emit ("/\052 %s \052/\n", p->nicename);
+ if (shortcut)
+ {
+ emit ("int <fop>_%04x(context,pc)\n", value);
+ }
+ else
+ {
+ emit ("int <fop>_%d(context,pc,iwords0)\n", p->idx);
+ emit ("int iwords0;\n");
+ }
+ emit ("sim_state_type *context;\n");
+ emit ("int pc;\n");
+ emit ("{\n");
+ emit ("register unsigned int tmp;\n");
+ if (shortcut)
+ {
+ emit ("register unsigned int iwords0 = 0x%x;\n", value);
+ }
+
+ /* work out how much bigger this opcode could be because it's large
+ model */
+ if (BIG)
+ {
+ int i;
+
+ extra = 0;
+ for (i = 0; i < 4; i++)
+ {
+ if ((p->arg_info[i] & CLASS_MASK) == CLASS_DA
+ || (p->arg_info[i] & CLASS_MASK) == CLASS_X)
+ extra += 2;
+ }
+ }
+ else
+ {
+ extra = 0;
+ }
+ printf (" /* Length %d */ \n", p->length + extra);
+ switch (p->length + extra)
+ {
+ case 2:
+ emit ("pc += 2\n;");
+ break;
+ case 4:
+ emit ("register unsigned int iwords1 = get_word_mem_da(context,pc+2);\n");
+ emit ("pc += 4;\n");
+ break;
+ case 6:
+
+ emit ("register unsigned int iwords1 = get_word_mem_da(context,pc+2);\n");
+ emit ("register unsigned int iwords2 = get_word_mem_da(context,pc+4);\n");
+ emit ("pc += 6;\n");
+ break;
+ case 8:
+ emit ("register unsigned int iwords1 = get_word_mem_da(context,pc+2);\n");
+ emit ("register unsigned int iwords2 = get_word_mem_da(context,pc+4);\n");
+ emit ("register unsigned int iwords3 = get_word_mem_da(context,pc+6);\n");
+ emit ("pc += 8;\n");
+ break;
+ default:
+ break;
+
+ }
+ emit ("context->cycles += %d;\n", p->cycles);
+
+ emit ("{\n");
+ info_args (p);
+ info_special (p, &getdst, &nostore, &before, &nosrc);
+
+ info_lvals (p);
+ if (!nosrc)
+ {
+ info_fetch (p, getdst);
+ }
+
+ if (before)
+ {
+ info_docode (p);
+ }
+ else
+ {
+ info_docode (p);
+ }
+ if (!nostore)
+ info_store (p);
+ emit ("}\n");
+ emit ("return pc;\n");
+ emit ("}\n");
+}
+
+void
+static
+one_instruction (i)
+ int i;
+{
+ /* find the table entry */
+ opcode_entry_type *p = z8k_table + i;
+
+ if (!p)
+ return;
+ mangle (p, 0, 0);
+}
+
+void
+add_to_list (ptr, value)
+ struct opcode_value **ptr;
+ int value;
+{
+ struct opcode_value *prev;
+
+ prev = *ptr;
+ *ptr = (struct opcode_value *) malloc (sizeof (struct opcode_value));
+
+ (*ptr)->n = value;
+ (*ptr)->next = prev;
+}
+
+void
+build_list (i)
+ int i;
+{
+ opcode_entry_type *p = lookup_inst (i);
+
+ if (!p)
+ return;
+ add_to_list (&list[p->idx], i);
+}
+
+int
+main (ac, av)
+ int ac;
+ char **av;
+{
+ int i;
+ int needcomma = 0;
+
+ makelist = 0;
+
+ for (i = 1; i < ac; i++)
+ {
+ if (strcmp (av[i], "-m") == 0)
+ makelist = 1;
+ if (strcmp (av[i], "-1") == 0)
+ file = 1;
+ if (strcmp (av[i], "-2") == 0)
+ file = 2;
+ if (strcmp (av[i], "-3") == 0)
+ file = 3;
+ if (strcmp (av[i], "-b3") == 0)
+ {
+ file = 3;
+ BIG = 1;
+ }
+
+ }
+ if (makelist)
+ {
+
+ int i;
+ needcomma = 0;
+ printf ("short int z8k_inv_list[] = {\n");
+
+ for (i = 0; i < 1 << 16; i++)
+ {
+ opcode_entry_type *p = lookup_inst (i);
+
+ if(needcomma)
+ printf(",");
+ if ((i & 0xf) == 0)
+ printf ("\n");
+
+#if 0
+ printf ("\n /*%04x %s */", i, p ? p->nicename : "");
+#endif
+
+ if (!p)
+ {
+ printf ("-1");
+ }
+ else
+ {
+ printf ("%d", p->idx);
+ }
+
+ if ((i & 0x3f) == 0 && DIRTY_HACK)
+ {
+ printf ("\n#ifdef __GNUC__\n");
+ printf ("};\n");
+ printf("short int int_list%d[] = {\n", i);
+ printf ("#else\n");
+ printf (",\n");
+ printf ("#endif\n");
+ needcomma = 0;
+ }
+ else
+ needcomma = 1;
+
+ }
+ printf ("};\n");
+ return 1;
+ }
+
+ /* First work out which opcodes use which bit patterns,
+ build a list of all matching bit pattens */
+ for (i = 0; i < 1 << 16; i++)
+ {
+ build_list (i);
+ }
+#if DUMP_LIST
+ for (i = 0; i < NOPS; i++)
+ {
+ struct opcode_value *p;
+
+ printf ("%d,", i);
+ p = list[i];
+ while (p)
+ {
+ printf (" %04x,", p->n);
+ p = p->next;
+ }
+ printf ("-1\n");
+ }
+
+#endif
+
+ if (file == 1)
+ {
+ extern int quick[];
+
+ /* Do the shortcuts */
+ printf (" /* SHORTCUTS */\n");
+ for (i = 0; quick[i]; i++)
+ {
+ int t = quick[i];
+
+ mangle (z8k_table + z8k_inv_list[t],
+ 1,
+ t);
+ }
+ }
+ if (file == 3)
+ {
+ printf (" /* NOT -SHORTCUTS */\n");
+ for (i = 0; i < NOPS; i++)
+ {
+ if (list[i])
+ {
+ one_instruction (i);
+ }
+ else
+ {
+ emit ("int <fop>_%d(context,pc)\n", i);
+ printf ("sim_state_type *context;\n");
+ printf ("int pc;\n");
+ emit ("{ <fop>_bad1();return pc; }\n");
+ }
+ }
+ emit ("int <fop>_bad() ;\n");
+
+ /* Write the jump table */
+ emit ("int (*(<fop>_table[]))() = {");
+ needcomma = 0;
+ for (i = 0; i < NOPS; i++)
+ {
+ if (needcomma)
+ printf (",");
+ emit ("<fop>_%d\n", i);
+ needcomma = 1;
+ if ((i & 0x3f) == 0 && DIRTY_HACK)
+ {
+ printf ("#ifdef __GNUC__\n");
+ printf ("};\n");
+ emit ("int (*(<fop>_table%d[]))() = {\n", i);
+ printf ("#else\n");
+ printf (",\n");
+ printf ("#endif\n");
+ needcomma = 0;
+ }
+ }
+ emit ("};\n");
+ }
+
+ if (file == 2)
+ {
+ extern int quick[];
+ /* Static - since it's too be to be automatic on the apollo */
+ static int big[64 * 1024];
+
+ for (i = 0; i < 64 * 1024; i++)
+ big[i] = 0;
+
+ for (i = 0; quick[i]; i++)
+ {
+#if 0
+
+ printf ("extern int <fop>_%04x();\n", quick[i]);
+#endif
+
+ big[quick[i]] = 1;
+ }
+
+ for (i = 0; i < NOPS; i++)
+ {
+#if 0
+ printf ("extern int fop_%d();\n", i);
+#endif
+ }
+#if 0
+ printf ("extern int fop_bad();\n");
+#endif
+ printf ("struct op_info op_info_table[] = {\n");
+ for (i = 0; i < 1 << 16; i++)
+ {
+ int inv = z8k_inv_list[i];
+ opcode_entry_type *p = z8k_table + inv;
+
+ if (needcomma)
+ printf (",");
+#if 0
+ if (big[i])
+ {
+ printf ("<fop>_%04x", i);
+ }
+ else
+#endif
+ if (inv >= 0)
+ {
+ printf ("%d", inv);
+ }
+ else
+ printf ("400");
+ if (inv >= 0)
+ {
+ printf (" /* %04x %s */\n", i, p->nicename);
+ }
+ else
+ {
+ printf ("\n");
+ }
+ needcomma = 1;
+ if ((i & 0x3f) == 0 && DIRTY_HACK)
+ {
+ printf ("#ifdef __GNUC__\n");
+ printf ("}; \n");
+ printf ("struct op_info op_info_table%d[] = {\n", i);
+ printf ("#else\n");
+ printf (",\n");
+
+ printf ("#endif\n");
+ needcomma = 0;
+ }
+ }
+ printf ("};\n");
+
+ }
+ return 0;
+}
+
+char *
+insn_ptr (n)
+ int n;
+{
+ if (BIG)
+ {
+ abort ();
+ }
+
+ switch (n)
+ {
+ case 4:
+ return "iwords_1";
+ default:
+ return "fail(context,123)";
+ }
+}
+
+/* work out if the opcode only wants lvalues */
+int
+lvalue (p)
+ opcode_entry_type *p;
+{
+ switch (p->opcode)
+ {
+ case OPC_lda:
+ return 1;
+ case OPC_call:
+ case OPC_jp:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+int
+info_len_in_words (o)
+ opcode_entry_type *o;
+{
+ unsigned int *p = o->byte_info;
+ int nibs = 0;
+
+ while (*p)
+ {
+ switch (*p & CLASS_MASK)
+ {
+ case CLASS_BIT:
+ case CLASS_REGN0:
+ case CLASS_REG:
+ case CLASS_01II:
+ case CLASS_00II:
+ nibs++;
+ break;
+ case CLASS_ADDRESS:
+ nibs += SIZE_ADDRESS;
+ break;
+ case CLASS_IMM:
+ switch (*p & ~CLASS_MASK)
+ {
+ case ARG_IMM16:
+ nibs += 4;
+ break;
+ case ARG_IMM32:
+ nibs += 8;
+ break;
+ case ARG_IMM2:
+ case ARG_IMM4:
+ case ARG_IMM4M1:
+ case ARG_IMM_1:
+ case ARG_IMM_2:
+ case ARG_IMMNMINUS1:
+ nibs++;
+ break;
+ case ARG_NIM8:
+
+ case ARG_IMM8:
+ nibs += 2;
+ break;
+ default:
+ abort ();
+ }
+ break;
+ case CLASS_DISP:
+ switch (*p & ~CLASS_MASK)
+ {
+ case ARG_DISP16:
+ nibs += 4;
+ break;
+ case ARG_DISP12:
+ nibs += 3;
+ break;
+ case ARG_DISP8:
+ nibs += 2;
+ break;
+ default:
+ abort ();
+ }
+ break;
+ case CLASS_0DISP7:
+ case CLASS_1DISP7:
+ case CLASS_DISP8:
+ nibs += 2;
+ break;
+ case CLASS_BIT_1OR2:
+ case CLASS_0CCC:
+ case CLASS_1CCC:
+ case CLASS_CC:
+ nibs++;
+ break;
+ default:
+ emit ("don't know %x\n", *p);
+ }
+ p++;
+ }
+
+ return nibs / 4; /* return umber of words */
+}
generated by cgit v1.1 at 2024-12-11 12:11:43 +0000