3220 lines
106 KiB
C
3220 lines
106 KiB
C
/*
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* UAE - The Un*x Amiga Emulator
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*
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* MC68000 emulation generator
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*
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* This is a fairly stupid program that generates a lot of case labels that
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* can be #included in a switch statement.
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* As an alternative, it can generate functions that handle specific
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* MC68000 instructions, plus a prototype header file and a function pointer
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* array to look up the function for an opcode.
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* Error checking is bad, an illegal table68k file will cause the program to
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* call abort().
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* The generated code is sometimes sub-optimal, an optimizing compiler should
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* take care of this.
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*
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* The source for the insn timings is Markt & Technik's Amiga Magazin 8/1992.
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*
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* Copyright 1995, 1996, 1997, 1998, 1999, 2000 Bernd Schmidt
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*/
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#include "sysconfig.h"
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#include "uae_types.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <assert.h>
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#include <limits.h>
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#include "uae_string.h"
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#include "uae_types.h"
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#include "uae_malloc.h"
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#include <ctype.h>
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#include "readcpu.h"
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#define BOOL_TYPE "int"
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static FILE *headerfile;
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static FILE *stblfile;
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static int using_prefetch;
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static int using_exception_3;
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static int using_ce;
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static int cpu_level;
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static int optimized_flags;
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#define GF_APDI 1
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#define GF_AD8R 2
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#define GF_PC8R 4
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#define GF_AA 7
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#define GF_NOREFILL 8
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#define GF_PREFETCH 16
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/* For the current opcode, the next lower level that will have different code.
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* Initialized to -1 for each opcode. If it remains unchanged, indicates we
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* are done with that opcode. */
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static int next_cpu_level;
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static int *opcode_map;
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static int *opcode_next_clev;
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static int *opcode_last_postfix;
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static unsigned long *counts;
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static void read_counts (void)
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{
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FILE *file;
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unsigned long opcode, count, total;
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char name[20];
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int nr = 0;
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memset (counts, 0, 65536 * sizeof *counts);
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count = 0;
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file = fopen ("frequent.68k", "r");
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if (file) {
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fscanf (file, "Total: %lu\n", &total);
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while (fscanf (file, "%lx: %lu %s\n", &opcode, &count, name) == 3) {
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opcode_next_clev[nr] = 4;
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opcode_last_postfix[nr] = -1;
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opcode_map[nr++] = opcode;
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counts[opcode] = count;
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}
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fclose (file);
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}
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if (nr == nr_cpuop_funcs)
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return;
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for (opcode = 0; opcode < 0x10000; opcode++) {
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if (table68k[opcode].handler == -1 && table68k[opcode].mnemo != i_ILLG
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&& counts[opcode] == 0)
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{
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opcode_next_clev[nr] = 4;
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opcode_last_postfix[nr] = -1;
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opcode_map[nr++] = opcode;
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counts[opcode] = count;
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}
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}
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if (nr != nr_cpuop_funcs)
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abort ();
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}
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static char endlabelstr[80];
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static int endlabelno = 0;
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static int need_endlabel;
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static int n_braces = 0, limit_braces;
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static int m68k_pc_offset = 0;
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static int insn_n_cycles;
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static void fpulimit (void)
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{
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if (limit_braces)
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return;
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printf ("\n#ifdef FPUEMU\n");
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limit_braces = n_braces;
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n_braces = 0;
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}
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static void cpulimit (void)
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{
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printf ("#ifndef CPUEMU_68000_ONLY\n");
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}
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static void returncycles (const char *s, int cycles)
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{
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if (using_ce) return;
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printf ("%sreturn CYCLE_UNIT / 2 * %d;\n", s, cycles);
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}
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static void addcycles (int cycles)
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{
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if (!using_ce) return;
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printf ("\tdo_cycles_ce (CYCLE_UNIT / 2 * %d);\n", cycles);
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}
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static void addcycles2 (const char *s, int cycles)
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{
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if (!using_ce) return;
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printf ("%sdo_cycles_ce (CYCLE_UNIT / 2 * %d);\n", s, cycles);
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}
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static void addcycles3 (const char *s)
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{
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if (!using_ce) return;
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printf ("%sif (cycles > 0) do_cycles_ce (cycles);\n", s);
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}
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static int isreg(amodes mode)
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{
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if (mode == Dreg || mode == Areg)
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return 1;
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return 0;
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}
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static void start_brace (void)
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{
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n_braces++;
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printf ("{");
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}
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static void close_brace (void)
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{
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assert (n_braces > 0);
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n_braces--;
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printf ("}");
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}
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static void finish_braces (void)
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{
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while (n_braces > 0)
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close_brace ();
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}
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static void pop_braces (int to)
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{
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while (n_braces > to)
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close_brace ();
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}
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static int bit_size (int size)
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{
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switch (size) {
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case sz_byte: return 8;
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case sz_word: return 16;
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case sz_long: return 32;
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default: abort ();
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}
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return 0;
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}
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static const char *bit_mask (int size)
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{
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switch (size) {
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case sz_byte: return "0xff";
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case sz_word: return "0xffff";
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case sz_long: return "0xffffffff";
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default: abort ();
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}
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return 0;
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}
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static void gen_nextilong (const char *type, const char *name, int norefill)
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{
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int r = m68k_pc_offset;
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m68k_pc_offset += 4;
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if (using_ce) {
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printf ("\t%s %s;\n", type, name);
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/* we must do this because execution order of (something | something2) is not defined */
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if (norefill) {
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printf ("\t%s = get_word_ce_prefetch (regs, %d) << 16;\n", name, r + 2);
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printf ("\t%s |= regs->irc;\n", name);
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} else {
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printf ("\t%s = get_word_ce_prefetch (regs, %d) << 16;\n", name, r + 2);
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printf ("\t%s |= get_word_ce_prefetch (regs, %d);\n", name, r + 4);
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}
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} else {
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if (using_prefetch) {
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if (norefill) {
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printf ("\t%s %s;\n", type, name);
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printf ("\t%s = get_word_prefetch (regs, %d) << 16;\n", name, r + 2);
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printf ("\t%s |= regs->irc;\n", name);
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insn_n_cycles += 4;
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} else {
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printf ("\t%s %s = get_long_prefetch (regs, %d);\n", type, name, r + 2);
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insn_n_cycles += 8;
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}
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} else {
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insn_n_cycles += 8;
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printf ("\t%s %s = get_ilong (regs, %d);\n", type, name, r);
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}
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}
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}
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static const char *gen_nextiword (int norefill)
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{
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static char buffer[80];
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int r = m68k_pc_offset;
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m68k_pc_offset += 2;
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if (using_ce) {
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if (norefill)
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strcpy (buffer, "regs->irc");
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else
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sprintf (buffer, "get_word_ce_prefetch (regs, %d)", r + 2);
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} else {
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if (using_prefetch) {
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if (norefill) {
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sprintf (buffer, "regs->irc");
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} else {
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sprintf (buffer, "get_word_prefetch (regs, %d)", r + 2);
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insn_n_cycles += 4;
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}
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} else {
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sprintf (buffer, "get_iword (regs, %d)", r);
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insn_n_cycles += 4;
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}
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}
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return buffer;
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}
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static const char *gen_nextibyte (int norefill)
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{
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static char buffer[80];
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int r = m68k_pc_offset;
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m68k_pc_offset += 2;
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if (using_ce) {
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if (norefill)
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strcpy (buffer, "(uae_u8)regs->irc");
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else
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sprintf (buffer, "(uae_u8)get_word_ce_prefetch (regs, %d)", r + 2);
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} else {
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insn_n_cycles += 4;
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if (using_prefetch) {
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if (norefill) {
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sprintf (buffer, "(uae_u8)regs->irc");
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} else {
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sprintf (buffer, "(uae_u8)get_word_prefetch (regs, %d)", r + 2);
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insn_n_cycles += 4;
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}
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} else {
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sprintf (buffer, "get_ibyte (regs, %d)", r);
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insn_n_cycles += 4;
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}
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}
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return buffer;
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}
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static void irc2ir (void)
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{
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if (!using_prefetch)
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return;
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printf ("\tregs->ir = regs->irc;\n");
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}
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static int did_prefetch;
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static void fill_prefetch_2 (void)
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{
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if (!using_prefetch)
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return;
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if (using_ce)
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printf ("\tget_word_ce_prefetch (regs, %d);\n", m68k_pc_offset + 2);
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else
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printf ("\tget_word_prefetch (regs, %d);\n", m68k_pc_offset + 2);
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did_prefetch = 1;
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insn_n_cycles += 4;
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}
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static void fill_prefetch_1 (int o)
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{
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if (!using_prefetch)
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return;
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if (using_ce) {
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printf ("\tget_word_ce_prefetch (regs, %d);\n", o);
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} else {
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printf ("\tget_word_prefetch (regs, %d);\n", o);
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}
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did_prefetch = 1;
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insn_n_cycles += 4;
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}
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static void fill_prefetch_full (void)
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{
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fill_prefetch_1 (0);
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irc2ir ();
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fill_prefetch_1 (2);
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}
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static void fill_prefetch_0 (void)
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{
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if (!using_prefetch)
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return;
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if (using_ce)
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printf ("\tget_word_ce_prefetch (regs, 0);\n");
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else
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printf ("\tget_word_prefetch (regs, 0);\n");
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did_prefetch = 1;
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insn_n_cycles += 4;
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}
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static void fill_prefetch_next_1 (void)
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{
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irc2ir ();
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fill_prefetch_1 (m68k_pc_offset + 2);
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}
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static void fill_prefetch_next (void)
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{
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fill_prefetch_next_1 ();
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}
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#if 0
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static void fill_prefetch_next_delay (int extracycles)
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{
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if (!using_prefetch)
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return;
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if (using_ce) {
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if (extracycles > 0) {
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printf("\t{\n");
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fill_prefetch_next ();
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printf("\tif (%d > 0) do_cycles(CYCLE_UNIT / 2 * %d);\n",
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extracycles, extracycles);
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printf("\t}\n");
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} else {
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fill_prefetch_next ();
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}
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} else {
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fill_prefetch_next ();
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}
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}
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#endif
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static void fill_prefetch_finish (void)
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{
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if (did_prefetch || !using_prefetch)
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return;
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fill_prefetch_1 (m68k_pc_offset);
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}
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static void sync_m68k_pc (void)
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{
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if (m68k_pc_offset == 0)
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return;
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printf ("\tm68k_incpc (regs, %d);\n", m68k_pc_offset);
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m68k_pc_offset = 0;
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}
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/* getv == 1: fetch data; getv != 0: check for odd address. If movem != 0,
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* the calling routine handles Apdi and Aipi modes.
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* gb-- movem == 2 means the same thing but for a MOVE16 instruction */
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static void genamode2 (amodes mode, const char *reg, wordsizes size, const char *name, int getv, int movem, int flags, int e3fudge)
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{
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char namea[100];
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int m68k_pc_offset_last = m68k_pc_offset;
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sprintf (namea, "%sa", name);
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start_brace ();
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switch (mode) {
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case Dreg:
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if (movem)
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abort ();
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if (getv == 1)
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switch (size) {
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case sz_byte:
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#ifdef USE_DUBIOUS_BIGENDIAN_OPTIMIZATION
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/* This causes the target compiler to generate better code on few systems */
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printf ("\tuae_s8 %s = ((uae_u8*)&m68k_dreg (regs, %s))[3];\n", name, reg);
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#else
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printf ("\tuae_s8 %s = m68k_dreg (regs, %s);\n", name, reg);
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#endif
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break;
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case sz_word:
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#ifdef USE_DUBIOUS_BIGENDIAN_OPTIMIZATION
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printf ("\tuae_s16 %s = ((uae_s16*)&m68k_dreg (regs, %s))[1];\n", name, reg);
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#else
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printf ("\tuae_s16 %s = m68k_dreg (regs, %s);\n", name, reg);
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#endif
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break;
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case sz_long:
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printf ("\tuae_s32 %s = m68k_dreg (regs, %s);\n", name, reg);
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break;
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default:
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abort ();
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}
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return;
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case Areg:
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if (movem)
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abort ();
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if (getv == 1)
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switch (size) {
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case sz_word:
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printf ("\tuae_s16 %s = m68k_areg (regs, %s);\n", name, reg);
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break;
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case sz_long:
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printf ("\tuae_s32 %s = m68k_areg (regs, %s);\n", name, reg);
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break;
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default:
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abort ();
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}
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return;
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case Aind:
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printf ("\tuaecptr %sa = m68k_areg (regs, %s);\n", name, reg);
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break;
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case Aipi:
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printf ("\tuaecptr %sa = m68k_areg (regs, %s);\n", name, reg);
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break;
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case Apdi:
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printf ("\tuaecptr %sa;\n", name);
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switch (size) {
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case sz_byte:
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if (movem)
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printf ("\t%sa = m68k_areg (regs, %s);\n", name, reg);
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else
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printf ("\t%sa = m68k_areg (regs, %s) - areg_byteinc[%s];\n", name, reg, reg);
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break;
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case sz_word:
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printf ("\t%sa = m68k_areg (regs, %s) - %d;\n", name, reg, movem ? 0 : 2);
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break;
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case sz_long:
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printf ("\t%sa = m68k_areg (regs, %s) - %d;\n", name, reg, movem ? 0 : 4);
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break;
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default:
|
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abort ();
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}
|
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if (!(flags & GF_APDI)) {
|
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addcycles (2);
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insn_n_cycles += 2;
|
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}
|
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break;
|
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case Ad16:
|
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printf ("\tuaecptr %sa = m68k_areg (regs, %s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword (flags & GF_NOREFILL));
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break;
|
|
case Ad8r:
|
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printf ("\tuaecptr %sa;\n", name);
|
|
if (cpu_level > 1) {
|
|
if (next_cpu_level < 1)
|
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next_cpu_level = 1;
|
|
sync_m68k_pc ();
|
|
start_brace ();
|
|
/* This would ordinarily be done in gen_nextiword, which we bypass. */
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insn_n_cycles += 4;
|
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printf ("\t%sa = get_disp_ea_020 (regs, m68k_areg (regs, %s), next_iword (regs));\n", name, reg);
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} else
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printf ("\t%sa = get_disp_ea_000 (regs, m68k_areg (regs, %s), %s);\n", name, reg, gen_nextiword (flags & GF_NOREFILL));
|
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if (!(flags & GF_AD8R)) {
|
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addcycles (2);
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insn_n_cycles += 2;
|
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}
|
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break;
|
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case PC16:
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printf ("\tuaecptr %sa = m68k_getpc (regs) + %d;\n", name, m68k_pc_offset);
|
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printf ("\t%sa += (uae_s32)(uae_s16)%s;\n", name, gen_nextiword (flags & GF_NOREFILL));
|
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break;
|
|
case PC8r:
|
|
printf ("\tuaecptr tmppc;\n");
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printf ("\tuaecptr %sa;\n", name);
|
|
if (cpu_level > 1) {
|
|
if (next_cpu_level < 1)
|
|
next_cpu_level = 1;
|
|
sync_m68k_pc ();
|
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start_brace ();
|
|
/* This would ordinarily be done in gen_nextiword, which we bypass. */
|
|
insn_n_cycles += 4;
|
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printf ("\ttmppc = m68k_getpc (regs);\n");
|
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printf ("\t%sa = get_disp_ea_020 (regs, tmppc, next_iword (regs));\n", name);
|
|
} else {
|
|
printf ("\ttmppc = m68k_getpc (regs) + %d;\n", m68k_pc_offset);
|
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printf ("\t%sa = get_disp_ea_000 (regs, tmppc, %s);\n", name, gen_nextiword (flags & GF_NOREFILL));
|
|
}
|
|
if (!(flags & GF_PC8R)) {
|
|
addcycles (2);
|
|
insn_n_cycles += 2;
|
|
}
|
|
|
|
break;
|
|
case absw:
|
|
printf ("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword (flags & GF_NOREFILL));
|
|
break;
|
|
case absl:
|
|
gen_nextilong ("uaecptr", namea, flags & GF_NOREFILL);
|
|
break;
|
|
case imm:
|
|
if (getv != 1)
|
|
abort ();
|
|
switch (size) {
|
|
case sz_byte:
|
|
printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte (flags & GF_NOREFILL));
|
|
break;
|
|
case sz_word:
|
|
printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword (flags & GF_NOREFILL));
|
|
break;
|
|
case sz_long:
|
|
gen_nextilong ("uae_s32", name, flags & GF_NOREFILL);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
return;
|
|
case imm0:
|
|
if (getv != 1)
|
|
abort ();
|
|
printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte (flags & GF_NOREFILL));
|
|
return;
|
|
case imm1:
|
|
if (getv != 1)
|
|
abort ();
|
|
printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword (flags & GF_NOREFILL));
|
|
return;
|
|
case imm2:
|
|
if (getv != 1)
|
|
abort ();
|
|
gen_nextilong ("uae_s32", name, flags & GF_NOREFILL);
|
|
return;
|
|
case immi:
|
|
if (getv != 1)
|
|
abort ();
|
|
printf ("\tuae_u32 %s = %s;\n", name, reg);
|
|
return;
|
|
default:
|
|
abort ();
|
|
}
|
|
|
|
/* We get here for all non-reg non-immediate addressing modes to
|
|
* actually fetch the value. */
|
|
|
|
if ((using_prefetch || using_ce) && using_exception_3 && getv != 0 && size != sz_byte) {
|
|
printf ("\tif (%sa & 1) {\n", name);
|
|
printf ("\t\texception3 (opcode, m68k_getpc(regs) + %d, %sa);\n",
|
|
m68k_pc_offset_last + e3fudge, name);
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t}\n");
|
|
need_endlabel = 1;
|
|
start_brace ();
|
|
}
|
|
|
|
if (flags & GF_PREFETCH)
|
|
fill_prefetch_next ();
|
|
|
|
if (getv == 1) {
|
|
start_brace ();
|
|
if (using_ce) {
|
|
switch (size) {
|
|
case sz_byte: printf ("\tuae_s8 %s = get_byte_ce (%sa);\n", name, name); break;
|
|
case sz_word: printf ("\tuae_s16 %s = get_word_ce (%sa);\n", name, name); break;
|
|
case sz_long: printf ("\tuae_s32 %s = get_word_ce (%sa) << 16; %s |= get_word_ce (%sa + 2);\n", name, name, name, name); break;
|
|
default: abort ();
|
|
}
|
|
} else {
|
|
switch (size) {
|
|
case sz_byte: insn_n_cycles += 4; printf ("\tuae_s8 %s = get_byte (%sa);\n", name, name); break;
|
|
case sz_word: insn_n_cycles += 4; printf ("\tuae_s16 %s = get_word (%sa);\n", name, name); break;
|
|
case sz_long: insn_n_cycles += 8; printf ("\tuae_s32 %s = get_long (%sa);\n", name, name); break;
|
|
default: abort ();
|
|
}
|
|
}
|
|
}
|
|
|
|
/* We now might have to fix up the register for pre-dec or post-inc
|
|
* addressing modes. */
|
|
if (!movem)
|
|
switch (mode) {
|
|
case Aipi:
|
|
switch (size) {
|
|
case sz_byte:
|
|
printf ("\tm68k_areg (regs, %s) += areg_byteinc[%s];\n", reg, reg);
|
|
break;
|
|
case sz_word:
|
|
printf ("\tm68k_areg (regs, %s) += 2;\n", reg);
|
|
break;
|
|
case sz_long:
|
|
printf ("\tm68k_areg (regs, %s) += 4;\n", reg);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
break;
|
|
case Apdi:
|
|
printf ("\tm68k_areg (regs, %s) = %sa;\n", reg, name);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void genamode (amodes mode, const char *reg, wordsizes size, const char *name, int getv, int movem, int flags)
|
|
{
|
|
genamode2 (mode, reg, size, name, getv, movem, flags, 0);
|
|
}
|
|
static void genamode_e3 (amodes mode, const char *reg, wordsizes size, const char *name, int getv, int movem, int flags, int e3fudge)
|
|
{
|
|
genamode2 (mode, reg, size, name, getv, movem, flags, e3fudge);
|
|
}
|
|
|
|
static void genastore_2 (const char *from, amodes mode, const char *reg, wordsizes size, const char *to, int store_dir)
|
|
{
|
|
switch (mode) {
|
|
case Dreg:
|
|
switch (size) {
|
|
case sz_byte:
|
|
#ifdef USE_DUBIOUS_BIGENDIAN_OPTIMIZATION
|
|
/* This causes the target compiler to generate better code on few systems */
|
|
printf ("\t((uae_u8*)&m68k_dreg (regs, %s))[3] = %s;\n", reg, from);
|
|
#else
|
|
printf ("\tm68k_dreg (regs, %s) = (m68k_dreg (regs, %s) & ~0xff) | ((%s) & 0xff);\n", reg, reg, from);
|
|
#endif
|
|
break;
|
|
case sz_word:
|
|
#ifdef USE_DUBIOUS_BIGENDIAN_OPTIMIZATION
|
|
printf ("\t((uae_s16*)&m68k_dreg (regs, %s))[1] = %s;\n", reg, from);
|
|
#else
|
|
printf ("\tm68k_dreg (regs, %s) = (m68k_dreg (regs, %s) & ~0xffff) | ((%s) & 0xffff);\n", reg, reg, from);
|
|
#endif
|
|
break;
|
|
case sz_long:
|
|
printf ("\tm68k_dreg (regs, %s) = (%s);\n", reg, from);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
break;
|
|
case Areg:
|
|
switch (size) {
|
|
case sz_word:
|
|
printf ("\tm68k_areg (regs, %s) = (uae_s32)(uae_s16)(%s);\n", reg, from);
|
|
break;
|
|
case sz_long:
|
|
printf ("\tm68k_areg (regs, %s) = (%s);\n", reg, from);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
break;
|
|
case Aind:
|
|
case Aipi:
|
|
case Apdi:
|
|
case Ad16:
|
|
case Ad8r:
|
|
case absw:
|
|
case absl:
|
|
case PC16:
|
|
case PC8r:
|
|
if (using_ce) {
|
|
switch (size) {
|
|
case sz_byte:
|
|
printf ("\tput_byte_ce (%sa,%s);\n", to, from);
|
|
break;
|
|
case sz_word:
|
|
if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
|
|
abort ();
|
|
printf ("\tput_word_ce (%sa,%s);\n", to, from);
|
|
break;
|
|
case sz_long:
|
|
if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
|
|
abort ();
|
|
if (store_dir)
|
|
printf ("\tput_word_ce (%sa + 2, %s); put_word_ce (%sa, %s >> 16);\n", to, from, to, from);
|
|
else
|
|
printf ("\tput_word_ce (%sa, %s >> 16); put_word_ce (%sa + 2, %s);\n", to, from, to, from);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
} else {
|
|
switch (size) {
|
|
case sz_byte:
|
|
insn_n_cycles += 4;
|
|
printf ("\tput_byte (%sa,%s);\n", to, from);
|
|
break;
|
|
case sz_word:
|
|
insn_n_cycles += 4;
|
|
if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
|
|
abort ();
|
|
printf ("\tput_word (%sa,%s);\n", to, from);
|
|
break;
|
|
case sz_long:
|
|
insn_n_cycles += 8;
|
|
if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
|
|
abort ();
|
|
printf ("\tput_long (%sa,%s);\n", to, from);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
break;
|
|
case imm:
|
|
case imm0:
|
|
case imm1:
|
|
case imm2:
|
|
case immi:
|
|
abort ();
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
static void genastore (const char *from, amodes mode, const char *reg, wordsizes size, const char *to)
|
|
{
|
|
genastore_2 (from, mode, reg, size, to, 0);
|
|
}
|
|
static void genastore_rev (const char *from, amodes mode, const char *reg, wordsizes size, const char *to)
|
|
{
|
|
genastore_2 (from, mode, reg, size, to, 1);
|
|
}
|
|
|
|
|
|
static void genmovemel (uae_u16 opcode)
|
|
{
|
|
char getcode[100];
|
|
int size = table68k[opcode].size == sz_long ? 4 : 2;
|
|
|
|
if (table68k[opcode].size == sz_long) {
|
|
strcpy (getcode, "get_long(srca)");
|
|
} else {
|
|
strcpy (getcode, "(uae_s32)(uae_s16)get_word(srca)");
|
|
}
|
|
|
|
printf ("\tuae_u16 mask = %s;\n", gen_nextiword (0));
|
|
printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
|
|
genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1, 0);
|
|
start_brace ();
|
|
printf ("\twhile (dmask) { m68k_dreg (regs, movem_index1[dmask]) = %s; srca += %d; dmask = movem_next[dmask]; }\n",
|
|
getcode, size);
|
|
printf ("\twhile (amask) { m68k_areg (regs, movem_index1[amask]) = %s; srca += %d; amask = movem_next[amask]; }\n",
|
|
getcode, size);
|
|
|
|
if (table68k[opcode].dmode == Aipi)
|
|
printf ("\tm68k_areg (regs, dstreg) = srca;\n");
|
|
}
|
|
|
|
static void genmovemel_ce (uae_u16 opcode)
|
|
{
|
|
int size = table68k[opcode].size == sz_long ? 4 : 2;
|
|
printf ("\tuae_u16 mask = %s;\n", gen_nextiword (0));
|
|
printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
|
|
printf ("\tuae_u32 v;\n");
|
|
genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1, GF_AA);
|
|
if (table68k[opcode].dmode == Ad8r || table68k[opcode].dmode == PC8r)
|
|
addcycles (2);
|
|
start_brace ();
|
|
if (table68k[opcode].size == sz_long) {
|
|
printf ("\twhile (dmask) { v = get_word_ce(srca) << 16; v |= get_word_ce(srca + 2); m68k_dreg (regs, movem_index1[dmask]) = v; srca += %d; dmask = movem_next[dmask]; }\n",
|
|
size);
|
|
printf ("\twhile (amask) { v = get_word_ce(srca) << 16; v |= get_word_ce(srca + 2); m68k_areg (regs, movem_index1[amask]) = v; srca += %d; amask = movem_next[amask]; }\n",
|
|
size);
|
|
} else {
|
|
printf ("\twhile (dmask) { m68k_dreg (regs, movem_index1[dmask]) = (uae_s32)(uae_s16)get_word_ce(srca); srca += %d; dmask = movem_next[dmask]; }\n",
|
|
size);
|
|
printf ("\twhile (amask) { m68k_areg (regs, movem_index1[amask]) = (uae_s32)(uae_s16)get_word_ce(srca); srca += %d; amask = movem_next[amask]; }\n",
|
|
size);
|
|
}
|
|
printf ("\tget_word_ce (srca);\n");
|
|
if (table68k[opcode].dmode == Aipi)
|
|
printf ("\tm68k_areg (regs, dstreg) = srca;\n");
|
|
}
|
|
|
|
static void genmovemle (uae_u16 opcode)
|
|
{
|
|
char putcode[100];
|
|
int size = table68k[opcode].size == sz_long ? 4 : 2;
|
|
if (table68k[opcode].size == sz_long) {
|
|
strcpy (putcode, "put_long(srca,");
|
|
} else {
|
|
strcpy (putcode, "put_word(srca,");
|
|
}
|
|
|
|
printf ("\tuae_u16 mask = %s;\n", gen_nextiword (0));
|
|
genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1, 0);
|
|
if (using_prefetch)
|
|
sync_m68k_pc ();
|
|
|
|
start_brace ();
|
|
if (table68k[opcode].dmode == Apdi) {
|
|
printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
|
|
printf ("\twhile (amask) { srca -= %d; %s m68k_areg (regs, movem_index2[amask])); amask = movem_next[amask]; }\n",
|
|
size, putcode);
|
|
printf ("\twhile (dmask) { srca -= %d; %s m68k_dreg (regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n",
|
|
size, putcode);
|
|
printf ("\tm68k_areg (regs, dstreg) = srca;\n");
|
|
} else {
|
|
printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
|
|
printf ("\twhile (dmask) { %s m68k_dreg (regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n",
|
|
putcode, size);
|
|
printf ("\twhile (amask) { %s m68k_areg (regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n",
|
|
putcode, size);
|
|
}
|
|
}
|
|
|
|
static void genmovemle_ce (uae_u16 opcode)
|
|
{
|
|
int size = table68k[opcode].size == sz_long ? 4 : 2;
|
|
printf ("\tuae_u16 mask = %s;\n", gen_nextiword (0));
|
|
genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1, GF_AA);
|
|
|
|
if (table68k[opcode].dmode == Ad8r || table68k[opcode].dmode == PC8r)
|
|
addcycles (2);
|
|
start_brace ();
|
|
if (table68k[opcode].size == sz_long) {
|
|
if (table68k[opcode].dmode == Apdi) {
|
|
printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
|
|
printf ("\twhile (amask) { srca -= %d; put_word_ce (srca, m68k_areg (regs, movem_index2[amask]) >> 16); put_word_ce (srca + 2, m68k_areg (regs, movem_index2[amask])); amask = movem_next[amask]; }\n",
|
|
size);
|
|
printf ("\twhile (dmask) { srca -= %d; put_word_ce (srca, m68k_dreg (regs, movem_index2[dmask]) >> 16); put_word_ce (srca + 2, m68k_dreg (regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n",
|
|
size);
|
|
printf ("\tm68k_areg (regs, dstreg) = srca;\n");
|
|
} else {
|
|
printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
|
|
printf ("\twhile (dmask) { put_word_ce (srca, m68k_dreg (regs, movem_index1[dmask]) >> 16); put_word_ce (srca + 2, m68k_dreg (regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n",
|
|
size);
|
|
printf ("\twhile (amask) { put_word_ce (srca, m68k_areg (regs, movem_index1[amask]) >> 16); put_word_ce (srca + 2, m68k_areg (regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n",
|
|
size);
|
|
}
|
|
} else {
|
|
if (table68k[opcode].dmode == Apdi) {
|
|
printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
|
|
printf ("\twhile (amask) { srca -= %d; put_word_ce (srca, m68k_areg (regs, movem_index2[amask])); amask = movem_next[amask]; }\n",
|
|
size);
|
|
printf ("\twhile (dmask) { srca -= %d; put_word_ce (srca, m68k_dreg (regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n",
|
|
size);
|
|
printf ("\tm68k_areg (regs, dstreg) = srca;\n");
|
|
} else {
|
|
printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
|
|
printf ("\twhile (dmask) { put_word_ce (srca, m68k_dreg (regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n",
|
|
size);
|
|
printf ("\twhile (amask) { put_word_ce (srca, m68k_areg (regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n",
|
|
size);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void duplicate_carry (int n)
|
|
{
|
|
int i;
|
|
for (i = 0; i <= n; i++)
|
|
printf ("\t");
|
|
printf ("COPY_CARRY (®s->ccrflags);\n");
|
|
}
|
|
|
|
typedef enum
|
|
{
|
|
flag_logical_noclobber, flag_logical, flag_add, flag_sub, flag_cmp, flag_addx, flag_subx, flag_zn,
|
|
flag_av, flag_sv
|
|
}
|
|
flagtypes;
|
|
|
|
static void genflags_normal (flagtypes type, wordsizes size, const char *value, const char *src, const char *dst)
|
|
{
|
|
char vstr[100], sstr[100], dstr[100];
|
|
char usstr[100], udstr[100];
|
|
char unsstr[100], undstr[100];
|
|
|
|
switch (size) {
|
|
case sz_byte:
|
|
strcpy (vstr, "((uae_s8)(");
|
|
strcpy (usstr, "((uae_u8)(");
|
|
break;
|
|
case sz_word:
|
|
strcpy (vstr, "((uae_s16)(");
|
|
strcpy (usstr, "((uae_u16)(");
|
|
break;
|
|
case sz_long:
|
|
strcpy (vstr, "((uae_s32)(");
|
|
strcpy (usstr, "((uae_u32)(");
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
strcpy (unsstr, usstr);
|
|
|
|
strcpy (sstr, vstr);
|
|
strcpy (dstr, vstr);
|
|
strcat (vstr, value);
|
|
strcat (vstr, "))");
|
|
strcat (dstr, dst);
|
|
strcat (dstr, "))");
|
|
strcat (sstr, src);
|
|
strcat (sstr, "))");
|
|
|
|
strcpy (udstr, usstr);
|
|
strcat (udstr, dst);
|
|
strcat (udstr, "))");
|
|
strcat (usstr, src);
|
|
strcat (usstr, "))");
|
|
|
|
strcpy (undstr, unsstr);
|
|
strcat (unsstr, "-");
|
|
strcat (undstr, "~");
|
|
strcat (undstr, dst);
|
|
strcat (undstr, "))");
|
|
strcat (unsstr, src);
|
|
strcat (unsstr, "))");
|
|
|
|
switch (type) {
|
|
case flag_logical_noclobber:
|
|
case flag_logical:
|
|
case flag_zn:
|
|
case flag_av:
|
|
case flag_sv:
|
|
case flag_addx:
|
|
case flag_subx:
|
|
break;
|
|
|
|
case flag_add:
|
|
start_brace ();
|
|
printf ("uae_u32 %s = %s + %s;\n", value, dstr, sstr);
|
|
break;
|
|
case flag_sub:
|
|
case flag_cmp:
|
|
start_brace ();
|
|
printf ("uae_u32 %s = %s - %s;\n", value, dstr, sstr);
|
|
break;
|
|
}
|
|
|
|
switch (type) {
|
|
case flag_logical_noclobber:
|
|
case flag_logical:
|
|
case flag_zn:
|
|
break;
|
|
|
|
case flag_add:
|
|
case flag_sub:
|
|
case flag_addx:
|
|
case flag_subx:
|
|
case flag_cmp:
|
|
case flag_av:
|
|
case flag_sv:
|
|
start_brace ();
|
|
printf ("\t" BOOL_TYPE " flgs = (%s < 0) ? 1 : 0;\n", sstr);
|
|
printf ("\t" BOOL_TYPE " flgo = (%s < 0) ? 1 : 0;\n", dstr);
|
|
printf ("\t" BOOL_TYPE " flgn = (%s < 0) ? 1 : 0;\n", vstr);
|
|
break;
|
|
}
|
|
|
|
switch (type) {
|
|
case flag_logical:
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
printf ("\tSET_ZFLG (®s->ccrflags, (%s == 0) ? 1 : 0);\n", vstr);
|
|
printf ("\tSET_NFLG (®s->ccrflags, (%s < 0) ? 1 : 0);\n", vstr);
|
|
break;
|
|
case flag_logical_noclobber:
|
|
printf ("\tSET_ZFLG (®s->ccrflags, (%s == 0) ? 1 : 0);\n", vstr);
|
|
printf ("\tSET_NFLG (®s->ccrflags, (%s < 0) ? 1 : 0);\n", vstr);
|
|
break;
|
|
case flag_av:
|
|
printf ("\tSET_VFLG (®s->ccrflags, (flgs ^ flgn) & (flgo ^ flgn));\n");
|
|
break;
|
|
case flag_sv:
|
|
printf ("\tSET_VFLG (®s->ccrflags, (flgs ^ flgo) & (flgn ^ flgo));\n");
|
|
break;
|
|
case flag_zn:
|
|
printf ("\tSET_ZFLG (®s->ccrflags, GET_ZFLG (®s->ccrflags) & ((%s == 0) ? 1 : 0));\n", vstr);
|
|
printf ("\tSET_NFLG (®s->ccrflags, (%s < 0) ? 1 : 0);\n", vstr);
|
|
break;
|
|
case flag_add:
|
|
printf ("\tSET_ZFLG (®s->ccrflags, (%s == 0) ? 1 : 0);\n", vstr);
|
|
printf ("\tSET_VFLG (®s->ccrflags, (flgs ^ flgn) & (flgo ^ flgn));\n");
|
|
printf ("\tSET_CFLG (®s->ccrflags, (%s < %s) ? 1 : 0);\n", undstr, usstr);
|
|
duplicate_carry (0);
|
|
printf ("\tSET_NFLG (®s->ccrflags, flgn);\n");
|
|
break;
|
|
case flag_sub:
|
|
printf ("\tSET_ZFLG (®s->ccrflags, (%s == 0) ? 1 : 0);\n", vstr);
|
|
printf ("\tSET_VFLG (®s->ccrflags, (flgs ^ flgo) & (flgn ^ flgo));\n");
|
|
printf ("\tSET_CFLG (®s->ccrflags, (%s > %s) ? 1 : 0);\n", usstr, udstr);
|
|
duplicate_carry (0);
|
|
printf ("\tSET_NFLG (®s->ccrflags, flgn);\n");
|
|
break;
|
|
case flag_addx:
|
|
printf ("\tSET_VFLG (®s->ccrflags, (flgs ^ flgn) & (flgo ^ flgn));\n"); /* minterm SON: 0x42 */
|
|
printf ("\tSET_CFLG (®s->ccrflags, flgs ^ ((flgs ^ flgo) & (flgo ^ flgn)));\n"); /* minterm SON: 0xD4 */
|
|
duplicate_carry (0);
|
|
break;
|
|
case flag_subx:
|
|
printf ("\tSET_VFLG (®s->ccrflags, (flgs ^ flgo) & (flgo ^ flgn));\n"); /* minterm SON: 0x24 */
|
|
printf ("\tSET_CFLG (®s->ccrflags, flgs ^ ((flgs ^ flgn) & (flgo ^ flgn)));\n"); /* minterm SON: 0xB2 */
|
|
duplicate_carry (0);
|
|
break;
|
|
case flag_cmp:
|
|
printf ("\tSET_ZFLG (®s->ccrflags, (%s == 0) ? 1 : 0);\n", vstr);
|
|
printf ("\tSET_VFLG (®s->ccrflags, (flgs != flgo) && (flgn != flgo));\n");
|
|
printf ("\tSET_CFLG (®s->ccrflags, (%s > %s) ? 1 : 0);\n", usstr, udstr);
|
|
printf ("\tSET_NFLG (®s->ccrflags, flgn);\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void genflags (flagtypes type, wordsizes size, const char *value, const char *src, const char *dst)
|
|
{
|
|
/* Temporarily deleted 68k/ARM flag optimizations. I'd prefer to have
|
|
them in the appropriate m68k.h files and use just one copy of this
|
|
code here. The API can be changed if necessary. */
|
|
if (optimized_flags) {
|
|
switch (type) {
|
|
case flag_add:
|
|
case flag_sub:
|
|
start_brace ();
|
|
printf ("\tuae_u32 %s;\n", value);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* At least some of those casts are fairly important! */
|
|
switch (type) {
|
|
case flag_logical_noclobber:
|
|
printf ("\t{uae_u32 oldcznv = GET_CZNV (®s->ccrflags) & ~(FLAGVAL_Z | FLAGVAL_N);\n");
|
|
if (strcmp (value, "0") == 0) {
|
|
printf ("\tSET_CZNV (®s->ccrflags, olcznv | FLAGVAL_Z);\n");
|
|
} else {
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_testb (regs, (uae_s8)(%s));\n", value); break;
|
|
case sz_word: printf ("\toptflag_testw (regs, (uae_s16)(%s));\n", value); break;
|
|
case sz_long: printf ("\toptflag_testl (regs, (uae_s32)(%s));\n", value); break;
|
|
}
|
|
printf ("\tIOR_CZNV (®s->ccrflags, oldcznv);\n");
|
|
}
|
|
printf ("\t}\n");
|
|
return;
|
|
case flag_logical:
|
|
if (strcmp (value, "0") == 0) {
|
|
printf ("\tSET_CZNV (®s->ccrflags, FLAGVAL_Z);\n");
|
|
} else {
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_testb (regs, (uae_s8)(%s));\n", value); break;
|
|
case sz_word: printf ("\toptflag_testw (regs, (uae_s16)(%s));\n", value); break;
|
|
case sz_long: printf ("\toptflag_testl (regs, (uae_s32)(%s));\n", value); break;
|
|
}
|
|
}
|
|
return;
|
|
|
|
case flag_add:
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_addb (regs, %s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
|
|
case sz_word: printf ("\toptflag_addw (regs, %s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
|
|
case sz_long: printf ("\toptflag_addl (regs, %s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
|
|
}
|
|
return;
|
|
|
|
case flag_sub:
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_subb (regs, %s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
|
|
case sz_word: printf ("\toptflag_subw (regs, %s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
|
|
case sz_long: printf ("\toptflag_subl (regs, %s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
|
|
}
|
|
return;
|
|
|
|
case flag_cmp:
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_cmpb (regs, (uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
|
|
case sz_word: printf ("\toptflag_cmpw (regs, (uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
|
|
case sz_long: printf ("\toptflag_cmpl (regs, (uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
|
|
}
|
|
return;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
genflags_normal (type, size, value, src, dst);
|
|
}
|
|
|
|
static void force_range_for_rox (const char *var, wordsizes size)
|
|
{
|
|
/* Could do a modulo operation here... which one is faster? */
|
|
switch (size) {
|
|
case sz_long:
|
|
printf ("\tif (%s >= 33) %s -= 33;\n", var, var);
|
|
break;
|
|
case sz_word:
|
|
printf ("\tif (%s >= 34) %s -= 34;\n", var, var);
|
|
printf ("\tif (%s >= 17) %s -= 17;\n", var, var);
|
|
break;
|
|
case sz_byte:
|
|
printf ("\tif (%s >= 36) %s -= 36;\n", var, var);
|
|
printf ("\tif (%s >= 18) %s -= 18;\n", var, var);
|
|
printf ("\tif (%s >= 9) %s -= 9;\n", var, var);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static const char *cmask (wordsizes size)
|
|
{
|
|
switch (size) {
|
|
case sz_byte: return "0x80";
|
|
case sz_word: return "0x8000";
|
|
case sz_long: return "0x80000000";
|
|
default: abort ();
|
|
}
|
|
}
|
|
|
|
static int source_is_imm1_8 (struct instr *i)
|
|
{
|
|
return i->stype == 3;
|
|
}
|
|
|
|
static void shift_ce (amodes dmode, int size)
|
|
{
|
|
if (using_ce && isreg (dmode)) {
|
|
printf ("\t{\n");
|
|
printf ("\t\tint cycles = CYCLE_UNIT / 2 * %d;\n", size == sz_long ? 8 : 6);
|
|
printf ("\t\tcycles += 2 * CYCLE_UNIT / 2 * ccnt;\n");
|
|
addcycles3 ("\t\t");
|
|
printf ("\t}\n");
|
|
}
|
|
}
|
|
|
|
static void gen_opcode (unsigned long int opcode)
|
|
{
|
|
struct instr *curi = table68k + opcode;
|
|
int tmpc = 0;
|
|
insn_n_cycles = using_prefetch ? 0 : 4;
|
|
|
|
start_brace ();
|
|
m68k_pc_offset = 2;
|
|
switch (curi->plev) {
|
|
case 0: /* not privileged */
|
|
break;
|
|
case 1: /* unprivileged only on 68000 */
|
|
if (cpu_level == 0)
|
|
break;
|
|
if (next_cpu_level < 0)
|
|
next_cpu_level = 0;
|
|
|
|
/* fall through */
|
|
case 2: /* priviledged */
|
|
printf ("if (!regs->s) { Exception (8, regs, 0); goto %s; }\n", endlabelstr);
|
|
need_endlabel = 1;
|
|
start_brace ();
|
|
break;
|
|
case 3: /* privileged if size == word */
|
|
if (curi->size == sz_byte)
|
|
break;
|
|
printf ("if (!regs->s) { Exception (8, regs, 0); goto %s; }\n", endlabelstr);
|
|
need_endlabel = 1;
|
|
start_brace ();
|
|
break;
|
|
}
|
|
switch (curi->mnemo) {
|
|
case i_OR:
|
|
case i_AND:
|
|
case i_EOR:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
printf ("\tsrc %c= dst;\n", curi->mnemo == i_OR ? '|' : curi->mnemo == i_AND ? '&' : '^');
|
|
genflags (flag_logical, curi->size, "src", "", "");
|
|
if (curi->size == sz_long && isreg (curi->dmode))
|
|
addcycles (curi->mnemo == i_AND ? 2 : 4);
|
|
fill_prefetch_next ();
|
|
genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_ORSR:
|
|
case i_EORSR:
|
|
printf ("\tMakeSR (regs);\n");
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
if (curi->size == sz_byte) {
|
|
printf ("\tsrc &= 0xFF;\n");
|
|
}
|
|
addcycles (4);
|
|
fill_prefetch_next ();
|
|
printf ("\tregs->sr %c= src;\n", curi->mnemo == i_EORSR ? '^' : '|');
|
|
printf ("\tMakeFromSR (regs);\n");
|
|
break;
|
|
case i_ANDSR:
|
|
printf ("\tMakeSR (regs);\n");
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
if (curi->size == sz_byte) {
|
|
printf ("\tsrc |= 0xFF00;\n");
|
|
}
|
|
addcycles (4);
|
|
fill_prefetch_next ();
|
|
printf ("\tregs->sr &= src;\n");
|
|
printf ("\tMakeFromSR (regs);\n");
|
|
break;
|
|
case i_SUB:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode)) {
|
|
if (curi->dmode == Dreg && curi->size == sz_long)
|
|
addcycles ((curi->smode == imm || curi->smode == immi) ? 4 : 2);
|
|
}
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
genflags (flag_sub, curi->size, "newv", "src", "dst");
|
|
genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_SUBA:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode) && curi->dmode == Areg) {
|
|
tmpc += curi->size == sz_long ? 2 : 4;
|
|
if (curi->size == sz_long)
|
|
tmpc += (isreg (curi->smode) || curi->smode == imm) ? 2 : 0;
|
|
addcycles (4);
|
|
}
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = dst - src;\n");
|
|
genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
break;
|
|
case i_SUBX:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA);
|
|
if ((isreg (curi->smode) && curi->size == sz_long) || !isreg (curi->smode))
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = dst - src - GET_XFLG (®s->ccrflags);\n");
|
|
genflags (flag_subx, curi->size, "newv", "src", "dst");
|
|
genflags (flag_zn, curi->size, "newv", "", "");
|
|
genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_SBCD:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u16 newv_lo = (dst & 0xF) - (src & 0xF) - GET_XFLG (®s->ccrflags);\n");
|
|
printf ("\tuae_u16 newv_hi = (dst & 0xF0) - (src & 0xF0);\n");
|
|
printf ("\tuae_u16 newv, tmp_newv;\n");
|
|
printf ("\tint bcd = 0;\n");
|
|
printf ("\tnewv = tmp_newv = newv_hi + newv_lo;\n");
|
|
printf ("\tif (newv_lo & 0xF0) { newv -= 6; bcd = 6; };\n");
|
|
printf ("\tif ((((dst & 0xFF) - (src & 0xFF) - GET_XFLG (®s->ccrflags)) & 0x100) > 0xFF) { newv -= 0x60; }\n");
|
|
printf ("\tSET_CFLG (®s->ccrflags, ((((dst & 0xFF) - (src & 0xFF) - bcd - GET_XFLG (®s->ccrflags)) & 0x300) > 0xFF) ? 1 : 0);\n");
|
|
duplicate_carry (0);
|
|
genflags (flag_zn, curi->size, "newv", "", "");
|
|
printf ("\tSET_VFLG (®s->ccrflags, ((tmp_newv & 0x80) != 0 && (newv & 0x80) == 0) ? 1 : 0);\n");
|
|
addcycles (2);
|
|
genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_ADD:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode)) {
|
|
if (curi->dmode == Dreg && curi->size == sz_long)
|
|
addcycles ((curi->smode == imm || curi->smode == immi) ? 4 : 2);
|
|
}
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
genflags (flag_add, curi->size, "newv", "src", "dst");
|
|
genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_ADDA:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode) && curi->dmode == Areg) {
|
|
tmpc += curi->size == sz_long ? 2 : 4;
|
|
if (curi->size == sz_long)
|
|
tmpc += (isreg (curi->smode) || curi->smode == imm) ? 2 : 0;
|
|
addcycles (tmpc);
|
|
}
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = dst + src;\n");
|
|
genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
break;
|
|
case i_ADDX:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA);
|
|
if ((isreg (curi->smode) && curi->size == sz_long) || !isreg (curi->smode))
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = dst + src + GET_XFLG (®s->ccrflags);\n");
|
|
genflags (flag_addx, curi->size, "newv", "src", "dst");
|
|
genflags (flag_zn, curi->size, "newv", "", "");
|
|
genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_ABCD:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + GET_XFLG (®s->ccrflags);\n");
|
|
printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n");
|
|
printf ("\tuae_u16 newv, tmp_newv;\n");
|
|
printf ("\tint cflg;\n");
|
|
printf ("\tnewv = tmp_newv = newv_hi + newv_lo;");
|
|
printf ("\tif (newv_lo > 9) { newv += 6; }\n");
|
|
printf ("\tcflg = (newv & 0x3F0) > 0x90;\n");
|
|
printf ("\tif (cflg) newv += 0x60;\n");
|
|
printf ("\tSET_CFLG (®s->ccrflags, cflg ? 1 : 0);\n");
|
|
duplicate_carry (0);
|
|
genflags (flag_zn, curi->size, "newv", "", "");
|
|
printf ("\tSET_VFLG (®s->ccrflags, ((tmp_newv & 0x80) == 0 && (newv & 0x80) != 0) ? 1 : 0);\n");
|
|
addcycles (2);
|
|
genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_NEG:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
if (isreg (curi->smode) && curi->size == sz_long)
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
genflags (flag_sub, curi->size, "dst", "src", "0");
|
|
genastore_rev ("dst", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_NEGX:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
if (isreg (curi->smode) && curi->size == sz_long)
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = 0 - src - GET_XFLG (®s->ccrflags);\n");
|
|
genflags (flag_subx, curi->size, "newv", "src", "0");
|
|
genflags (flag_zn, curi->size, "newv", "", "");
|
|
genastore_rev ("newv", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_NBCD:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
if (isreg (curi->smode))
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u16 newv_lo = - (src & 0xF) - GET_XFLG (®s->ccrflags);\n");
|
|
printf ("\tuae_u16 newv_hi = - (src & 0xF0);\n");
|
|
printf ("\tuae_u16 newv;\n");
|
|
printf ("\tint cflg;\n");
|
|
printf ("\tif (newv_lo > 9) { newv_lo -= 6; }\n");
|
|
printf ("\tnewv = newv_hi + newv_lo;");
|
|
printf ("\tcflg = (newv & 0x1F0) > 0x90;\n");
|
|
printf ("\tif (cflg) newv -= 0x60;\n");
|
|
printf ("\tSET_CFLG (®s->ccrflags, cflg ? 1 : 0);\n");
|
|
duplicate_carry(0);
|
|
genflags (flag_zn, curi->size, "newv", "", "");
|
|
genastore ("newv", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_CLR:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", cpu_level == 0 ? 1 : 2, 0, 0);
|
|
if (isreg (curi->smode) && curi->size == sz_long)
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
genflags (flag_logical, curi->size, "0", "", "");
|
|
genastore_rev ("0", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_NOT:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
if (isreg (curi->smode) && curi->size == sz_long)
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u32 dst = ~src;\n");
|
|
genflags (flag_logical, curi->size, "dst", "", "");
|
|
genastore_rev ("dst", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_TST:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
genflags (flag_logical, curi->size, "src", "", "");
|
|
break;
|
|
case i_BTST:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode))
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
if (curi->size == sz_byte)
|
|
printf ("\tsrc &= 7;\n");
|
|
else
|
|
printf ("\tsrc &= 31;\n");
|
|
printf ("\tSET_ZFLG (®s->ccrflags, 1 ^ ((dst >> src) & 1));\n");
|
|
break;
|
|
case i_BCHG:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode))
|
|
addcycles (4);
|
|
fill_prefetch_next ();
|
|
if (curi->size == sz_byte)
|
|
printf ("\tsrc &= 7;\n");
|
|
else
|
|
printf ("\tsrc &= 31;\n");
|
|
printf ("\tdst ^= (1 << src);\n");
|
|
printf ("\tSET_ZFLG (®s->ccrflags, ((uae_u32)dst & (1 << src)) >> src);\n");
|
|
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_BCLR:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode))
|
|
addcycles (4);
|
|
fill_prefetch_next ();
|
|
if (curi->size == sz_byte)
|
|
printf ("\tsrc &= 7;\n");
|
|
else
|
|
printf ("\tsrc &= 31;\n");
|
|
printf ("\tSET_ZFLG (®s->ccrflags, 1 ^ ((dst >> src) & 1));\n");
|
|
printf ("\tdst &= ~(1 << src);\n");
|
|
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_BSET:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode))
|
|
addcycles (4);
|
|
fill_prefetch_next ();
|
|
if (curi->size == sz_byte)
|
|
printf ("\tsrc &= 7;\n");
|
|
else
|
|
printf ("\tsrc &= 31;\n");
|
|
printf ("\tSET_ZFLG (®s->ccrflags, 1 ^ ((dst >> src) & 1));\n");
|
|
printf ("\tdst |= (1 << src);\n");
|
|
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_CMPM:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
genflags (flag_cmp, curi->size, "newv", "src", "dst");
|
|
break;
|
|
case i_CMP:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode)) {
|
|
if (curi->dmode == Areg || (curi->dmode == Dreg && curi->size == sz_long))
|
|
addcycles (2);
|
|
}
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
genflags (flag_cmp, curi->size, "newv", "src", "dst");
|
|
break;
|
|
case i_CMPA:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0);
|
|
if (isreg (curi->dmode)) {
|
|
if (curi->dmode == Areg || (curi->dmode == Dreg && curi->size == sz_long))
|
|
addcycles (2);
|
|
}
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
genflags (flag_cmp, sz_long, "newv", "src", "dst");
|
|
break;
|
|
/* The next two are coded a little unconventional, but they are doing
|
|
* weird things... */
|
|
case i_MVPRM:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
printf ("\tuaecptr memp = m68k_areg (regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword (0));
|
|
if (using_ce) {
|
|
if (curi->size == sz_word) {
|
|
printf ("\tput_byte_ce (memp, src >> 8); put_byte_ce (memp + 2, src);\n");
|
|
} else {
|
|
printf ("\tput_byte_ce (memp, src >> 24); put_byte_ce (memp + 2, src >> 16);\n");
|
|
printf ("\tput_byte_ce (memp + 4, src >> 8); put_byte_ce (memp + 6, src);\n");
|
|
}
|
|
} else {
|
|
if (curi->size == sz_word) {
|
|
printf ("\tput_byte (memp, src >> 8); put_byte (memp + 2, src);\n");
|
|
} else {
|
|
printf ("\tput_byte (memp, src >> 24); put_byte (memp + 2, src >> 16);\n");
|
|
printf ("\tput_byte (memp + 4, src >> 8); put_byte (memp + 6, src);\n");
|
|
}
|
|
}
|
|
fill_prefetch_next ();
|
|
break;
|
|
case i_MVPMR:
|
|
printf ("\tuaecptr memp = m68k_areg (regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword (0));
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0, 0);
|
|
if (using_ce) {
|
|
if (curi->size == sz_word) {
|
|
printf ("\tuae_u16 val = (get_byte_ce (memp) << 8) + get_byte_ce (memp + 2);\n");
|
|
} else {
|
|
printf ("\tuae_u32 val = (get_byte_ce (memp) << 24) + (get_byte_ce (memp + 2) << 16)\n");
|
|
printf (" + (get_byte_ce (memp + 4) << 8) + get_byte_ce (memp + 6);\n");
|
|
}
|
|
} else {
|
|
if (curi->size == sz_word) {
|
|
printf ("\tuae_u16 val = (get_byte (memp) << 8) + get_byte (memp + 2);\n");
|
|
} else {
|
|
printf ("\tuae_u32 val = (get_byte (memp) << 24) + (get_byte (memp + 2) << 16)\n");
|
|
printf (" + (get_byte (memp + 4) << 8) + get_byte (memp + 6);\n");
|
|
}
|
|
}
|
|
fill_prefetch_next ();
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_MOVE:
|
|
case i_MOVEA:
|
|
{
|
|
/* moves have special prefetch sequences:
|
|
* - MOVE <x>,-(An) = prefetch is before writes
|
|
* - MOVE <x>,(xxx).L, the most stupid ever. 2 prefetches after write
|
|
* if <x> is not register or immediate
|
|
* - all others = prefetch is done after writes
|
|
*/
|
|
int prefetch_done = 0;
|
|
int dualprefetch = curi->dmode == absl && (curi->smode != Dreg && curi->smode != Areg && curi->smode != imm);
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
/* MOVE.L dx,(ax) exception3 PC points to next instruction. hackhackhack */
|
|
genamode_e3 (curi->dmode, "dstreg", curi->size, "dst", 2, 0, 1 | (dualprefetch ? GF_NOREFILL : 0), curi->smode == Dreg && curi->dmode == Aind ? 2 : 0);
|
|
if (curi->mnemo == i_MOVEA && curi->size == sz_word)
|
|
printf ("\tsrc = (uae_s32)(uae_s16)src;\n");
|
|
if (curi->dmode == Apdi) {
|
|
fill_prefetch_next ();
|
|
prefetch_done = 1;
|
|
}
|
|
genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
|
|
if (curi->mnemo == i_MOVE)
|
|
genflags (flag_logical, curi->size, "src", "", "");
|
|
sync_m68k_pc ();
|
|
if (dualprefetch) {
|
|
fill_prefetch_full ();
|
|
prefetch_done = 1;
|
|
}
|
|
if (!prefetch_done)
|
|
fill_prefetch_next ();
|
|
}
|
|
break;
|
|
case i_MVSR2:
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 2, 0, 0);
|
|
if (isreg (curi->smode))
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
printf ("\tMakeSR (regs);\n");
|
|
if (curi->size == sz_byte)
|
|
genastore ("regs->sr & 0xff", curi->smode, "srcreg", sz_word, "src");
|
|
else
|
|
genastore ("regs->sr", curi->smode, "srcreg", sz_word, "src");
|
|
break;
|
|
case i_MV2SR:
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0, 0);
|
|
if (curi->size == sz_byte) {
|
|
addcycles (8);
|
|
printf ("\tMakeSR (regs);\n\tregs->sr &= 0xFF00;\n\tregs->sr |= src & 0xFF;\n");
|
|
} else {
|
|
addcycles (4);
|
|
printf ("\tregs->sr = src;\n");
|
|
}
|
|
fill_prefetch_next ();
|
|
printf ("\tMakeFromSR (regs);\n");
|
|
break;
|
|
case i_SWAP:
|
|
genamode (curi->smode, "srcreg", sz_long, "src", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tuae_u32 dst = ((src >> 16)&0xFFFF) | ((src&0xFFFF)<<16);\n");
|
|
genflags (flag_logical, sz_long, "dst", "", "");
|
|
genastore ("dst", curi->smode, "srcreg", sz_long, "src");
|
|
break;
|
|
case i_EXG:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
genastore ("dst", curi->smode, "srcreg", curi->size, "src");
|
|
genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_EXT:
|
|
genamode (curi->smode, "srcreg", sz_long, "src", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 dst = (uae_s32)(uae_s8)src;\n"); break;
|
|
case sz_word: printf ("\tuae_u16 dst = (uae_s16)(uae_s8)src;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 dst = (uae_s32)(uae_s16)src;\n"); break;
|
|
default: abort ();
|
|
}
|
|
genflags (flag_logical,
|
|
curi->size == sz_word ? sz_word : sz_long, "dst", "", "");
|
|
genastore ("dst", curi->smode, "srcreg",
|
|
curi->size == sz_word ? sz_word : sz_long, "src");
|
|
break;
|
|
case i_MVMEL:
|
|
if (using_ce)
|
|
genmovemel_ce (opcode);
|
|
else
|
|
genmovemel (opcode);
|
|
fill_prefetch_next ();
|
|
break;
|
|
case i_MVMLE:
|
|
if (using_ce)
|
|
genmovemle_ce (opcode);
|
|
else
|
|
genmovemle (opcode);
|
|
fill_prefetch_next ();
|
|
break;
|
|
case i_TRAP:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
printf ("\tException (src + 32, regs, 0);\n");
|
|
did_prefetch = 1;
|
|
m68k_pc_offset = 0;
|
|
break;
|
|
case i_MVR2USP:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
printf ("\tregs->usp = src;\n");
|
|
break;
|
|
case i_MVUSP2R:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 2, 0, 0);
|
|
fill_prefetch_next ();
|
|
genastore ("regs->usp", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_RESET:
|
|
fill_prefetch_next ();
|
|
printf ("\tcpureset();\n");
|
|
if (using_prefetch)
|
|
printf ("\tregs->irc = get_iword (regs, 4);\n");
|
|
break;
|
|
case i_NOP:
|
|
fill_prefetch_next ();
|
|
break;
|
|
case i_STOP:
|
|
/* real stop do not prefetch anything, later... */
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
printf ("\tregs->sr = src;\n");
|
|
printf ("\tMakeFromSR (regs);\n");
|
|
printf ("\tm68k_setstopped (regs, 1);\n");
|
|
sync_m68k_pc ();
|
|
fill_prefetch_full ();
|
|
break;
|
|
case i_RTE:
|
|
if (cpu_level == 0) {
|
|
genamode (Aipi, "7", sz_word, "sr", 1, 0, GF_NOREFILL);
|
|
genamode (Aipi, "7", sz_long, "pc", 1, 0, GF_NOREFILL);
|
|
printf ("\tregs->sr = sr; m68k_setpc (regs, pc);\n");
|
|
printf ("\tMakeFromSR (regs);\n");
|
|
} else {
|
|
int old_brace_level = n_braces;
|
|
if (next_cpu_level < 0)
|
|
next_cpu_level = 0;
|
|
printf ("\tuae_u16 newsr; uae_u32 newpc; for (;;) {\n");
|
|
genamode (Aipi, "7", sz_word, "sr", 1, 0, 0);
|
|
genamode (Aipi, "7", sz_long, "pc", 1, 0, 0);
|
|
genamode (Aipi, "7", sz_word, "format", 1, 0, 0);
|
|
printf ("\tnewsr = sr; newpc = pc;\n");
|
|
printf ("\tif ((format & 0xF000) == 0x0000) { break; }\n");
|
|
printf ("\telse if ((format & 0xF000) == 0x1000) { ; }\n");
|
|
printf ("\telse if ((format & 0xF000) == 0x2000) { m68k_areg (regs, 7) += 4; break; }\n");
|
|
printf ("\telse if ((format & 0xF000) == 0x8000) { m68k_areg (regs, 7) += 50; break; }\n");
|
|
printf ("\telse if ((format & 0xF000) == 0x7000) { m68k_areg (regs, 7) += 52; break; }\n");
|
|
printf ("\telse if ((format & 0xF000) == 0x9000) { m68k_areg (regs, 7) += 12; break; }\n");
|
|
printf ("\telse if ((format & 0xF000) == 0xa000) { m68k_areg (regs, 7) += 24; break; }\n");
|
|
printf ("\telse if ((format & 0xF000) == 0xb000) { m68k_areg (regs, 7) += 84; break; }\n");
|
|
printf ("\telse { Exception (14, regs, 0); goto %s; }\n", endlabelstr);
|
|
printf ("\tregs->sr = newsr; MakeFromSR (regs);\n}\n");
|
|
pop_braces (old_brace_level);
|
|
printf ("\tregs->sr = newsr; MakeFromSR (regs);\n");
|
|
printf ("\tif (newpc & 1)\n");
|
|
printf ("\t\texception3 (0x%04x, m68k_getpc (regs), newpc);\n", (uae_u32) opcode);
|
|
printf ("\telse\n");
|
|
printf ("\t\tm68k_setpc (regs, newpc);\n");
|
|
need_endlabel = 1;
|
|
}
|
|
/* PC is set and prefetch filled. */
|
|
m68k_pc_offset = 0;
|
|
fill_prefetch_full ();
|
|
break;
|
|
case i_RTD:
|
|
genamode (Aipi, "7", sz_long, "pc", 1, 0, 0);
|
|
genamode (curi->smode, "srcreg", curi->size, "offs", 1, 0, 0);
|
|
printf ("\tm68k_areg (regs, 7) += offs;\n");
|
|
printf ("\tif (pc & 1)\n");
|
|
printf ("\t\texception3 (0x%04x, m68k_getpc (regs), pc);\n", (uae_u32) opcode);
|
|
printf ("\telse\n");
|
|
printf ("\t\tm68k_setpc (regs, pc);\n");
|
|
/* PC is set and prefetch filled. */
|
|
m68k_pc_offset = 0;
|
|
fill_prefetch_full ();
|
|
break;
|
|
case i_LINK:
|
|
genamode (Apdi, "7", sz_long, "old", 2, 0, GF_AA);
|
|
genamode (curi->smode, "srcreg", sz_long, "src", 1, 0, GF_AA);
|
|
genastore ("src", Apdi, "7", sz_long, "old");
|
|
genastore ("m68k_areg (regs, 7)", curi->smode, "srcreg", sz_long, "src");
|
|
genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0, 0);
|
|
printf ("\tm68k_areg (regs, 7) += offs;\n");
|
|
fill_prefetch_next ();
|
|
break;
|
|
case i_UNLK:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
printf ("\tm68k_areg (regs, 7) = src;\n");
|
|
genamode (Aipi, "7", sz_long, "old", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
genastore ("old", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_RTS:
|
|
if (using_ce)
|
|
printf ("\tm68k_do_rts_ce (regs);\n");
|
|
else
|
|
printf ("\tm68k_do_rts (regs);\n");
|
|
m68k_pc_offset = 0;
|
|
fill_prefetch_full ();
|
|
break;
|
|
case i_TRAPV:
|
|
sync_m68k_pc ();
|
|
printf ("\tif (GET_VFLG (®s->ccrflags)) {\n");
|
|
printf ("\t\tException (7, regs, m68k_getpc (regs));\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t}\n");
|
|
fill_prefetch_next ();
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_RTR:
|
|
printf ("\tMakeSR (regs);\n");
|
|
genamode (Aipi, "7", sz_word, "sr", 1, 0, 0);
|
|
genamode (Aipi, "7", sz_long, "pc", 1, 0, 0);
|
|
printf ("\tregs->sr &= 0xFF00; sr &= 0xFF;\n");
|
|
printf ("\tregs->sr |= sr; m68k_setpc (regs, pc);\n");
|
|
printf ("\tMakeFromSR (regs);\n");
|
|
m68k_pc_offset = 0;
|
|
fill_prefetch_full ();
|
|
break;
|
|
case i_JSR:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0, GF_AA|GF_NOREFILL);
|
|
start_brace ();
|
|
printf ("\tuaecptr oldpc = m68k_getpc (regs) + %d;\n", m68k_pc_offset);
|
|
if (using_exception_3) {
|
|
printf ("\tif (srca & 1) {\n");
|
|
printf ("\t\texception3i (opcode, oldpc, srca);\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t}\n");
|
|
need_endlabel = 1;
|
|
}
|
|
printf ("\tm68k_setpc (regs, srca);\n");
|
|
m68k_pc_offset = 0;
|
|
fill_prefetch_1 (0);
|
|
printf("\tm68k_areg (regs, 7) -= 4;\n");
|
|
if (using_ce) {
|
|
printf("\tput_word_ce (m68k_areg (regs, 7), oldpc >> 16);\n");
|
|
printf("\tput_word_ce (m68k_areg (regs, 7) + 2, oldpc);\n");
|
|
} else {
|
|
printf("\tput_long (m68k_areg (regs, 7), oldpc);\n");
|
|
}
|
|
fill_prefetch_next ();
|
|
break;
|
|
case i_JMP:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0, GF_AA|GF_NOREFILL);
|
|
if (using_exception_3) {
|
|
printf ("\tif (srca & 1) {\n");
|
|
printf ("\t\texception3i (opcode, m68k_getpc (regs) + 6, srca);\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t}\n");
|
|
need_endlabel = 1;
|
|
}
|
|
if (curi->smode == Ad16 || curi->smode == Ad8r || curi->smode == absw || curi->smode == PC16 || curi->smode == PC8r)
|
|
addcycles (2);
|
|
printf ("\tm68k_setpc (regs, srca);\n");
|
|
m68k_pc_offset = 0;
|
|
fill_prefetch_full ();
|
|
break;
|
|
case i_BSR:
|
|
printf ("\tuae_s32 s;\n");
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA|GF_NOREFILL);
|
|
printf ("\ts = (uae_s32)src + 2;\n");
|
|
if (using_exception_3) {
|
|
printf ("\tif (src & 1) {\n");
|
|
printf ("\t\texception3i (opcode, m68k_getpc (regs) + 2, m68k_getpc (regs) + s);\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t}\n");
|
|
need_endlabel = 1;
|
|
}
|
|
addcycles (2);
|
|
if (using_ce)
|
|
printf ("\tm68k_do_bsr_ce (regs, m68k_getpc (regs) + %d, s);\n", m68k_pc_offset);
|
|
else
|
|
printf ("\tm68k_do_bsr (regs, m68k_getpc (regs) + %d, s);\n", m68k_pc_offset);
|
|
m68k_pc_offset = 0;
|
|
fill_prefetch_full ();
|
|
break;
|
|
case i_Bcc:
|
|
if (curi->size == sz_long) {
|
|
if (cpu_level < 2) {
|
|
addcycles (2);
|
|
printf ("\tif (cctrue (®s->ccrflags, %d)) {\n", curi->cc);
|
|
printf ("\t\texception3i (opcode, m68k_getpc (regs) + 2, m68k_getpc (regs) + 1);\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t}\n");
|
|
sync_m68k_pc ();
|
|
irc2ir ();
|
|
fill_prefetch_2 ();
|
|
printf ("\tgoto %s;\n", endlabelstr);
|
|
need_endlabel = 1;
|
|
} else {
|
|
if (next_cpu_level < 1)
|
|
next_cpu_level = 1;
|
|
}
|
|
}
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA | GF_NOREFILL);
|
|
addcycles (2);
|
|
printf ("\tif (!cctrue (®s->ccrflags, %d)) goto didnt_jump;\n", curi->cc);
|
|
if (using_exception_3) {
|
|
printf ("\tif (src & 1) {\n");
|
|
printf ("\t\texception3i (opcode, m68k_getpc (regs) + 2, m68k_getpc (regs) + 2 + (uae_s32)src);\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t}\n");
|
|
need_endlabel = 1;
|
|
}
|
|
if (using_prefetch) {
|
|
if (curi->size == sz_byte) {
|
|
printf ("\tm68k_incpc (regs, (uae_s32)src + 2);\n");
|
|
} else {
|
|
printf ("\tm68k_incpc (regs, (uae_s32)src + 2);\n");
|
|
}
|
|
fill_prefetch_full ();
|
|
if (using_ce)
|
|
printf ("\treturn;\n");
|
|
else
|
|
printf ("\treturn 10 * CYCLE_UNIT / 2;\n");
|
|
} else {
|
|
printf ("\tm68k_incpc (regs, (uae_s32)src + 2);\n");
|
|
returncycles ("\t", 10);
|
|
}
|
|
printf ("didnt_jump:;\n");
|
|
need_endlabel = 1;
|
|
sync_m68k_pc ();
|
|
if (curi->size == sz_byte) {
|
|
addcycles (2);
|
|
irc2ir ();
|
|
fill_prefetch_2 ();
|
|
} else
|
|
fill_prefetch_full ();
|
|
insn_n_cycles = curi->size == sz_byte ? 8 : 12;
|
|
break;
|
|
case i_LEA:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0, GF_AA);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0, GF_AA);
|
|
if (curi->smode == Ad8r || curi->smode == PC8r)
|
|
addcycles (4);
|
|
fill_prefetch_next ();
|
|
genastore ("srca", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_PEA:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0, GF_AA);
|
|
genamode (Apdi, "7", sz_long, "dst", 2, 0, GF_AA);
|
|
if (curi->smode == Ad8r || curi->smode == PC8r)
|
|
addcycles (4);
|
|
if (!(curi->smode == absw || curi->smode == absl))
|
|
fill_prefetch_next ();
|
|
genastore ("srca", Apdi, "7", sz_long, "dst");
|
|
if ((curi->smode == absw || curi->smode == absl))
|
|
fill_prefetch_next ();
|
|
break;
|
|
case i_DBcc:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA | GF_NOREFILL);
|
|
genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0, GF_AA | GF_NOREFILL);
|
|
|
|
printf ("\tuaecptr oldpc = m68k_getpc (regs);\n");
|
|
addcycles (2);
|
|
printf ("\tif (!cctrue (®s->ccrflags, %d)) {\n", curi->cc);
|
|
printf ("\t\tm68k_incpc (regs, (uae_s32)offs + 2);\n");
|
|
printf ("\t"); fill_prefetch_1 (0);
|
|
printf ("\t"); genastore ("(src-1)", curi->smode, "srcreg", curi->size, "src");
|
|
|
|
printf ("\t\tif (src) {\n");
|
|
if (using_exception_3) {
|
|
printf ("\t\t\tif (offs & 1) {\n");
|
|
printf ("\t\t\t\texception3i (opcode, m68k_getpc (regs) + 2, m68k_getpc (regs) + 2 + (uae_s32)offs + 2);\n");
|
|
printf ("\t\t\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t\t\t}\n");
|
|
need_endlabel = 1;
|
|
}
|
|
irc2ir ();
|
|
fill_prefetch_1 (2);
|
|
returncycles ("\t\t\t", 12);
|
|
if (using_ce)
|
|
printf ("\t\t\treturn;\n");
|
|
printf ("\t\t}\n");
|
|
printf ("\t} else {\n");
|
|
addcycles2 ("\t\t", 2);
|
|
printf ("\t}\n");
|
|
printf ("\tm68k_setpc (regs, oldpc + %d);\n", m68k_pc_offset);
|
|
m68k_pc_offset = 0;
|
|
fill_prefetch_full ();
|
|
insn_n_cycles = 12;
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_Scc:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", cpu_level == 0 ? 1 : 2, 0, 0);
|
|
start_brace ();
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
printf ("\tint val = cctrue (®s->ccrflags, %d) ? 0xff : 0;\n", curi->cc);
|
|
if (using_ce) {
|
|
printf ("\tint cycles = 0;\n");
|
|
if (isreg (curi->smode))
|
|
printf ("\tif (val) cycles += 2 * CYCLE_UNIT / 2;\n");
|
|
addcycles3 ("\t");
|
|
}
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_DIVU:
|
|
printf ("\tuaecptr oldpc = m68k_getpc (regs);\n");
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0);
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
printf ("\tif (src == 0) {\n");
|
|
if (cpu_level > 0) {
|
|
/* 68020 sets V when dividing by zero and N if dst is negative
|
|
* 68000 clears both
|
|
*/
|
|
printf("\t\tSET_VFLG (®s->ccrflags, 1);\n");
|
|
printf("\t\tif (dst < 0) SET_NFLG (®s->ccrflags, 1);\n");
|
|
}
|
|
printf ("\t\tm68k_incpc (regs, %d);\n", m68k_pc_offset);
|
|
printf ("\t\tException (5, regs, oldpc);\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t} else {\n");
|
|
printf ("\t\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
|
|
printf ("\t\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
|
|
if (using_ce) {
|
|
printf ("\t\tint cycles = getDivu68kCycles((uae_u32)dst, (uae_u16)src) * CYCLE_UNIT / 2;\n");
|
|
addcycles3 ("\t\t");
|
|
}
|
|
/* The N flag appears to be set each time there is an overflow.
|
|
* Weird. but 68020 only sets N when dst is negative.. */
|
|
printf ("\t\tif (newv > 0xffff) {\n");
|
|
printf ("\t\t\tSET_VFLG (®s->ccrflags, 1);\n");
|
|
#ifdef UNDEF68020
|
|
if (cpu_level >= 2)
|
|
printf ("\t\t\tif (currprefs.cpu_level == 0 || dst < 0) SET_NFLG (®s->ccrflags, 1);\n");
|
|
else /* ??? some 68000 revisions may not set NFLG when overflow happens.. */
|
|
#endif
|
|
printf ("\t\t\tSET_NFLG (®s->ccrflags, 1);\n");
|
|
printf ("\t\t} else {\n");
|
|
printf ("\t\t"); genflags (flag_logical, sz_word, "newv", "", "");
|
|
printf ("\t\t\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
|
|
printf ("\t\t"); genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
printf ("\t\t}\n");
|
|
fill_prefetch_next ();
|
|
sync_m68k_pc ();
|
|
printf ("\t}\n");
|
|
insn_n_cycles += 136 - (136 - 76) / 2; /* average */
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_DIVS:
|
|
printf ("\tuaecptr oldpc = m68k_getpc (regs);\n");
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0);
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
printf ("\tif (src == 0) {\n");
|
|
if (cpu_level > 0) {
|
|
/* 68020 sets V when dividing by zero. Z is also set.
|
|
* 68000 clears both
|
|
*/
|
|
printf("\t\tSET_VFLG (®s->ccrflags, 1);\n");
|
|
printf("\t\tSET_ZFLG (®s->ccrflags, 1);\n");
|
|
}
|
|
printf ("\t\tm68k_incpc (regs, %d);\n", m68k_pc_offset);
|
|
printf ("\t\tException (5, regs, oldpc);\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t} else {\n");
|
|
printf ("\t\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
|
|
printf ("\t\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
|
|
if (using_ce) {
|
|
printf ("\t\tint cycles = getDivs68kCycles((uae_s32)dst, (uae_s16)src) * CYCLE_UNIT / 2;\n");
|
|
addcycles3 ("\t\t");
|
|
}
|
|
printf ("\t\tif ((newv & 0xffff8000) != 0 && (newv & 0xffff8000) != 0xffff8000) {\n");
|
|
printf ("\t\t\tSET_VFLG (®s->ccrflags, 1);\n");
|
|
#ifdef UNDEF68020
|
|
if (cpu_level > 0)
|
|
printf ("\t\t\tif (currprefs.cpu_level == 0) SET_NFLG (®s->ccrflags, 1);\n");
|
|
else
|
|
#endif
|
|
printf ("\t\t\tSET_NFLG (®s->ccrflags, 1);\n");
|
|
printf ("\t\t} else {\n");
|
|
printf ("\t\t\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n");
|
|
genflags (flag_logical, sz_word, "newv", "", "");
|
|
printf ("\t\t\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
|
|
printf ("\t\t"); genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
printf ("\t\t}\n");
|
|
fill_prefetch_next ();
|
|
sync_m68k_pc ();
|
|
printf ("\t}\n");
|
|
insn_n_cycles += 156 - (156 - 120) / 2; /* average */
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_MULU:
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n");
|
|
if (using_ce)
|
|
printf ("\tint cycles = 36 * CYCLE_UNIT / 2, bits;\n");
|
|
genflags (flag_logical, sz_long, "newv", "", "");
|
|
if (using_ce) {
|
|
printf ("\tfor(bits = 0; bits < 16 && src; bits++, src >>= 1)\n");
|
|
printf ("\t\tif (src & 1) cycles += 2 * CYCLE_UNIT / 2;\n");
|
|
addcycles3 ("\t");
|
|
}
|
|
genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
sync_m68k_pc ();
|
|
insn_n_cycles += (70 - 38) / 2 + 38; /* average */
|
|
break;
|
|
case i_MULS:
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n");
|
|
if (using_ce) {
|
|
printf ("\tint cycles = 36 * CYCLE_UNIT / 2, bits;\n");
|
|
printf ("\tuae_u32 usrc;\n");
|
|
}
|
|
genflags (flag_logical, sz_long, "newv", "", "");
|
|
if (using_ce) {
|
|
printf ("\tusrc = ((uae_u32)src) << 1;\n");
|
|
printf ("\tfor(bits = 0; bits < 16 && usrc; bits++, usrc >>= 1)\n");
|
|
printf ("\t\tif ((usrc & 3) == 1 || (usrc & 3) == 2) cycles += 2 * CYCLE_UNIT / 2;\n");
|
|
addcycles3 ("\t");
|
|
}
|
|
genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
insn_n_cycles += (70 - 38) / 2 + 38; /* average */
|
|
break;
|
|
case i_CHK:
|
|
printf ("\tuaecptr oldpc = m68k_getpc (regs);\n");
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
addcycles (6);
|
|
fill_prefetch_next ();
|
|
printf ("\tif ((uae_s32)dst < 0) {\n");
|
|
printf ("\t\tSET_NFLG (®s->ccrflags, 1);\n");
|
|
printf ("\t\tException (6, regs, oldpc);\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t} else if (dst > src) {\n");
|
|
printf ("\t\tSET_NFLG (®s->ccrflags, 0);\n");
|
|
printf ("\t\tException (6, regs, oldpc);\n");
|
|
printf ("\t\tgoto %s;\n", endlabelstr);
|
|
printf ("\t}\n");
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_CHK2:
|
|
printf ("\tuaecptr oldpc = m68k_getpc (regs);\n");
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0, 0);
|
|
fill_prefetch_0 ();
|
|
printf ("\t{uae_s32 upper,lower,reg = regs->regs[(extra >> 12) & 15];\n");
|
|
switch (curi->size) {
|
|
case sz_byte:
|
|
printf ("\tlower=(uae_s32)(uae_s8)get_byte(dsta); upper = (uae_s32)(uae_s8)get_byte(dsta+1);\n");
|
|
printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s8)reg;\n");
|
|
break;
|
|
case sz_word:
|
|
printf ("\tlower=(uae_s32)(uae_s16)get_word(dsta); upper = (uae_s32)(uae_s16)get_word(dsta+2);\n");
|
|
printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s16)reg;\n");
|
|
break;
|
|
case sz_long:
|
|
printf ("\tlower=get_long(dsta); upper = get_long(dsta+4);\n");
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
printf ("\tSET_ZFLG (®s->ccrflags, (upper == reg || lower == reg) ? 1 : 0);\n");
|
|
printf ("\tSET_CFLG_ALWAYS (®s->ccrflags, lower <= upper ? ((reg < lower || reg > upper) ? 1 : 0) : ((reg > upper || reg < lower) ? 1 : 0));\n");
|
|
printf ("\tif ((extra & 0x800) && GET_CFLG (®s->ccrflags)) { Exception (6, regs, oldpc); goto %s; }\n}\n", endlabelstr);
|
|
need_endlabel = 1;
|
|
break;
|
|
|
|
case i_ASR:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tuae_u32 sign = (%s & val) >> %d;\n", cmask (curi->size), bit_size (curi->size) - 1);
|
|
printf ("\tint ccnt = cnt & 63;\n");
|
|
printf ("\tcnt &= 63;\n");
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
|
|
printf ("\t\tval = %s & (uae_u32)-sign;\n", bit_mask (curi->size));
|
|
printf ("\t\tSET_CFLG (®s->ccrflags, sign);\n");
|
|
duplicate_carry (1);
|
|
if (source_is_imm1_8 (curi))
|
|
printf ("\t} else {\n");
|
|
else
|
|
printf ("\t} else if (cnt > 0) {\n");
|
|
printf ("\t\tval >>= cnt - 1;\n");
|
|
printf ("\t\tSET_CFLG (®s->ccrflags, val & 1);\n");
|
|
duplicate_carry (1);
|
|
printf ("\t\tval >>= 1;\n");
|
|
printf ("\t\tval |= (%s << (%d - cnt)) & (uae_u32)-sign;\n",
|
|
bit_mask (curi->size),
|
|
bit_size (curi->size));
|
|
printf ("\t\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\t}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
shift_ce (curi->dmode, curi->size);
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ASL:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tint ccnt = cnt & 63;\n");
|
|
printf ("\tcnt &= 63;\n");
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
|
|
printf ("\t\tSET_VFLG (®s->ccrflags, (val != 0) ? 1 : 0);\n");
|
|
printf ("\t\tSET_CFLG (®s->ccrflags, cnt == %d ? val & 1 : 0);\n",
|
|
bit_size (curi->size));
|
|
duplicate_carry (1);
|
|
printf ("\t\tval = 0;\n");
|
|
if (source_is_imm1_8 (curi))
|
|
printf ("\t} else {\n");
|
|
else
|
|
printf ("\t} else if (cnt > 0) {\n");
|
|
printf ("\t\tuae_u32 mask = (%s << (%d - cnt)) & %s;\n",
|
|
bit_mask (curi->size),
|
|
bit_size (curi->size) - 1,
|
|
bit_mask (curi->size));
|
|
printf ("\t\tSET_VFLG (®s->ccrflags, ((val & mask) != mask && (val & mask) != 0) ? 1 : 0);\n");
|
|
printf ("\t\tval <<= cnt - 1;\n");
|
|
printf ("\t\tSET_CFLG (®s->ccrflags, (val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
|
|
duplicate_carry (1);
|
|
printf ("\t\tval <<= 1;\n");
|
|
printf ("\t\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\t}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
shift_ce (curi->dmode, curi->size);
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_LSR:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tint ccnt = cnt & 63;\n");
|
|
printf ("\tcnt &= 63;\n");
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
|
|
printf ("\t\tSET_CFLG (®s->ccrflags, ((cnt == %d) ? 1 : 0) & (val >> %d));\n",
|
|
bit_size (curi->size), bit_size (curi->size) - 1);
|
|
duplicate_carry (1);
|
|
printf ("\t\tval = 0;\n");
|
|
if (source_is_imm1_8 (curi))
|
|
printf ("\t} else {\n");
|
|
else
|
|
printf ("\t} else if (cnt > 0) {\n");
|
|
printf ("\t\tval >>= cnt - 1;\n");
|
|
printf ("\t\tSET_CFLG (®s->ccrflags, val & 1);\n");
|
|
duplicate_carry (1);
|
|
printf ("\t\tval >>= 1;\n");
|
|
printf ("\t}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
shift_ce (curi->dmode, curi->size);
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_LSL:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tint ccnt = cnt & 63;\n");
|
|
printf ("\tcnt &= 63;\n");
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
|
|
printf ("\t\tSET_CFLG (®s->ccrflags, cnt == %d ? val & 1 : 0);\n",
|
|
bit_size (curi->size));
|
|
duplicate_carry (1);
|
|
printf ("\t\tval = 0;\n");
|
|
if (source_is_imm1_8 (curi))
|
|
printf ("\t} else {\n");
|
|
else
|
|
printf ("\t} else if (cnt > 0) {\n");
|
|
printf ("\t\tval <<= (cnt - 1);\n");
|
|
printf ("\t\tSET_CFLG (®s->ccrflags, (val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
|
|
duplicate_carry (1);
|
|
printf ("\t\tval <<= 1;\n");
|
|
printf ("\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\t}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
shift_ce (curi->dmode, curi->size);
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ROL:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tint ccnt = cnt & 63;\n");
|
|
printf ("\tcnt &= 63;\n");
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
if (source_is_imm1_8 (curi))
|
|
printf ("{");
|
|
else
|
|
printf ("\tif (cnt > 0) {\n");
|
|
printf ("\tuae_u32 loval;\n");
|
|
printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
|
|
printf ("\tloval = val >> (%d - cnt);\n", bit_size (curi->size));
|
|
printf ("\tval <<= cnt;\n");
|
|
printf ("\tval |= loval;\n");
|
|
printf ("\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\tSET_CFLG (®s->ccrflags, val & 1);\n");
|
|
printf ("}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
shift_ce (curi->dmode, curi->size);
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ROR:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tint ccnt = cnt & 63;\n");
|
|
printf ("\tcnt &= 63;\n");
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
if (source_is_imm1_8 (curi))
|
|
printf ("{");
|
|
else
|
|
printf ("\tif (cnt > 0) {");
|
|
printf ("\tuae_u32 hival;\n");
|
|
printf ("\tcnt &= %d;\n", bit_size (curi->size) - 1);
|
|
printf ("\thival = val << (%d - cnt);\n", bit_size (curi->size));
|
|
printf ("\tval >>= cnt;\n");
|
|
printf ("\tval |= hival;\n");
|
|
printf ("\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\tSET_CFLG (®s->ccrflags, (val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
|
|
printf ("\t}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
shift_ce (curi->dmode, curi->size);
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ROXL:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tint ccnt = cnt & 63;\n");
|
|
printf ("\tcnt &= 63;\n");
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
if (source_is_imm1_8 (curi))
|
|
printf ("{");
|
|
else {
|
|
force_range_for_rox ("cnt", curi->size);
|
|
printf ("\tif (cnt > 0) {\n");
|
|
}
|
|
printf ("\tcnt--;\n");
|
|
printf ("\t{\n\tuae_u32 carry;\n");
|
|
printf ("\tuae_u32 loval = val >> (%d - cnt);\n", bit_size (curi->size) - 1);
|
|
printf ("\tcarry = loval & 1;\n");
|
|
printf ("\tval = (((val << 1) | GET_XFLG (®s->ccrflags)) << cnt) | (loval >> 1);\n");
|
|
printf ("\tSET_XFLG (®s->ccrflags, carry);\n");
|
|
printf ("\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\t} }\n");
|
|
printf ("\tSET_CFLG (®s->ccrflags, GET_XFLG (®s->ccrflags));\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
shift_ce (curi->dmode, curi->size);
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ROXR:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tint ccnt = cnt & 63;\n");
|
|
printf ("\tcnt &= 63;\n");
|
|
printf ("\tCLEAR_CZNV (®s->ccrflags);\n");
|
|
if (source_is_imm1_8 (curi))
|
|
printf ("{");
|
|
else {
|
|
force_range_for_rox ("cnt", curi->size);
|
|
printf ("\tif (cnt > 0) {\n");
|
|
}
|
|
printf ("\tcnt--;\n");
|
|
printf ("\t{\n\tuae_u32 carry;\n");
|
|
printf ("\tuae_u32 hival = (val << 1) | GET_XFLG (®s->ccrflags);\n");
|
|
printf ("\thival <<= (%d - cnt);\n", bit_size (curi->size) - 1);
|
|
printf ("\tval >>= cnt;\n");
|
|
printf ("\tcarry = val & 1;\n");
|
|
printf ("\tval >>= 1;\n");
|
|
printf ("\tval |= hival;\n");
|
|
printf ("\tSET_XFLG (®s->ccrflags, carry);\n");
|
|
printf ("\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\t} }\n");
|
|
printf ("\tSET_CFLG (®s->ccrflags, GET_XFLG (®s->ccrflags));\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
shift_ce (curi->dmode, curi->size);
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ASRW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
|
|
printf ("\tuae_u32 cflg = val & 1;\n");
|
|
printf ("\tval = (val >> 1) | sign;\n");
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("\tSET_CFLG (®s->ccrflags, cflg);\n");
|
|
duplicate_carry (0);
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_ASLW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size));
|
|
printf ("\tuae_u32 sign2;\n");
|
|
printf ("\tval <<= 1;\n");
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("\tsign2 = %s & val;\n", cmask (curi->size));
|
|
printf ("\tSET_CFLG (®s->ccrflags, sign != 0);\n");
|
|
duplicate_carry (0);
|
|
|
|
printf ("\tSET_VFLG (®s->ccrflags, (GET_VFLG (®s->ccrflags) | (sign2 != sign)) ? 1 : 0);\n");
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_LSRW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break;
|
|
case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tuae_u32 carry = val & 1;\n");
|
|
printf ("\tval >>= 1;\n");
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("SET_CFLG (®s->ccrflags, carry);\n");
|
|
duplicate_carry (0);
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_LSLW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
|
|
case sz_word: printf ("\tuae_u16 val = data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
|
|
printf ("\tval <<= 1;\n");
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("SET_CFLG (®s->ccrflags, carry >> %d);\n", bit_size (curi->size) - 1);
|
|
duplicate_carry (0);
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_ROLW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
|
|
case sz_word: printf ("\tuae_u16 val = data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
|
|
printf ("\tval <<= 1;\n");
|
|
printf ("\tif (carry) val |= 1;\n");
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("SET_CFLG (®s->ccrflags, carry >> %d);\n", bit_size (curi->size) - 1);
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_RORW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
|
|
case sz_word: printf ("\tuae_u16 val = data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tuae_u32 carry = val & 1;\n");
|
|
printf ("\tval >>= 1;\n");
|
|
printf ("\tif (carry) val |= %s;\n", cmask (curi->size));
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("SET_CFLG (®s->ccrflags, carry);\n");
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_ROXLW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
|
|
case sz_word: printf ("\tuae_u16 val = data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size));
|
|
printf ("\tval <<= 1;\n");
|
|
printf ("\tif (GET_XFLG (®s->ccrflags)) val |= 1;\n");
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("SET_CFLG (®s->ccrflags, carry >> %d);\n", bit_size (curi->size) - 1);
|
|
duplicate_carry (0);
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_ROXRW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tuae_u8 val = data;\n"); break;
|
|
case sz_word: printf ("\tuae_u16 val = data;\n"); break;
|
|
case sz_long: printf ("\tuae_u32 val = data;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\tuae_u32 carry = val & 1;\n");
|
|
printf ("\tval >>= 1;\n");
|
|
printf ("\tif (GET_XFLG (®s->ccrflags)) val |= %s;\n", cmask (curi->size));
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("SET_CFLG (®s->ccrflags, carry);\n");
|
|
duplicate_carry (0);
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_MOVEC2:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tint regno = (src >> 12) & 15;\n");
|
|
printf ("\tuae_u32 *regp = regs->regs + regno;\n");
|
|
printf ("\tif (! m68k_movec2(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
|
|
break;
|
|
case i_MOVE2C:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
fill_prefetch_next ();
|
|
start_brace ();
|
|
printf ("\tint regno = (src >> 12) & 15;\n");
|
|
printf ("\tuae_u32 *regp = regs->regs + regno;\n");
|
|
printf ("\tif (! m68k_move2c(src & 0xFFF, regp)) goto %s;\n", endlabelstr);
|
|
break;
|
|
case i_CAS:
|
|
{
|
|
int old_brace_level;
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
fill_prefetch_0 ();
|
|
start_brace ();
|
|
printf ("\tint ru = (src >> 6) & 7;\n");
|
|
printf ("\tint rc = src & 7;\n");
|
|
genflags (flag_cmp, curi->size, "newv", "m68k_dreg (regs, rc)", "dst");
|
|
printf ("\tif (GET_ZFLG (®s->ccrflags))");
|
|
old_brace_level = n_braces;
|
|
start_brace ();
|
|
genastore ("(m68k_dreg (regs, ru))", curi->dmode, "dstreg", curi->size, "dst");
|
|
pop_braces (old_brace_level);
|
|
printf ("else");
|
|
start_brace ();
|
|
printf ("m68k_dreg (regs, rc) = dst;\n");
|
|
pop_braces (old_brace_level);
|
|
}
|
|
break;
|
|
case i_CAS2:
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
printf ("\tuae_u32 rn1 = regs->regs[(extra >> 28) & 15];\n");
|
|
printf ("\tuae_u32 rn2 = regs->regs[(extra >> 12) & 15];\n");
|
|
if (curi->size == sz_word) {
|
|
int old_brace_level = n_braces;
|
|
printf ("\tuae_u16 dst1 = get_word(rn1), dst2 = get_word(rn2);\n");
|
|
genflags (flag_cmp, curi->size, "newv", "m68k_dreg (regs, (extra >> 16) & 7)", "dst1");
|
|
printf ("\tif (GET_ZFLG (®s->ccrflags)) {\n");
|
|
genflags (flag_cmp, curi->size, "newv", "m68k_dreg (regs, extra & 7)", "dst2");
|
|
printf ("\tif (GET_ZFLG (®s->ccrflags)) {\n");
|
|
printf ("\tput_word(rn1, m68k_dreg (regs, (extra >> 22) & 7));\n");
|
|
printf ("\tput_word(rn1, m68k_dreg (regs, (extra >> 6) & 7));\n");
|
|
printf ("\t}}\n");
|
|
pop_braces (old_brace_level);
|
|
printf ("\tif (! GET_ZFLG (®s->ccrflags)) {\n");
|
|
printf ("\tm68k_dreg (regs, (extra >> 22) & 7) = (m68k_dreg (regs, (extra >> 22) & 7) & ~0xffff) | (dst1 & 0xffff);\n");
|
|
printf ("\tm68k_dreg (regs, (extra >> 6) & 7) = (m68k_dreg (regs, (extra >> 6) & 7) & ~0xffff) | (dst2 & 0xffff);\n");
|
|
printf ("\t}\n");
|
|
} else {
|
|
int old_brace_level = n_braces;
|
|
printf ("\tuae_u32 dst1 = get_long(rn1), dst2 = get_long(rn2);\n");
|
|
genflags (flag_cmp, curi->size, "newv", "m68k_dreg (regs, (extra >> 16) & 7)", "dst1");
|
|
printf ("\tif (GET_ZFLG (®s->ccrflags)) {\n");
|
|
genflags (flag_cmp, curi->size, "newv", "m68k_dreg (regs, extra & 7)", "dst2");
|
|
printf ("\tif (GET_ZFLG (®s->ccrflags)) {\n");
|
|
printf ("\tput_long(rn1, m68k_dreg (regs, (extra >> 22) & 7));\n");
|
|
printf ("\tput_long(rn1, m68k_dreg (regs, (extra >> 6) & 7));\n");
|
|
printf ("\t}}\n");
|
|
pop_braces (old_brace_level);
|
|
printf ("\tif (! GET_ZFLG (®s->ccrflags)) {\n");
|
|
printf ("\tm68k_dreg (regs, (extra >> 22) & 7) = dst1;\n");
|
|
printf ("\tm68k_dreg (regs, (extra >> 6) & 7) = dst2;\n");
|
|
printf ("\t}\n");
|
|
}
|
|
break;
|
|
case i_MOVES: /* ignore DFC and SFC because we have no MMU */
|
|
{
|
|
int old_brace_level;
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
printf ("\tif (extra & 0x800)\n");
|
|
old_brace_level = n_braces;
|
|
start_brace ();
|
|
printf ("\tuae_u32 src = regs->regs[(extra >> 12) & 15];\n");
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0, 0);
|
|
genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
|
|
pop_braces (old_brace_level);
|
|
printf ("else");
|
|
start_brace ();
|
|
genamode (curi->dmode, "dstreg", curi->size, "src", 1, 0, 0);
|
|
printf ("\tif (extra & 0x8000) {\n");
|
|
switch (curi->size) {
|
|
case sz_byte: printf ("\tm68k_areg (regs, (extra >> 12) & 7) = (uae_s32)(uae_s8)src;\n"); break;
|
|
case sz_word: printf ("\tm68k_areg (regs, (extra >> 12) & 7) = (uae_s32)(uae_s16)src;\n"); break;
|
|
case sz_long: printf ("\tm68k_areg (regs, (extra >> 12) & 7) = src;\n"); break;
|
|
default: abort ();
|
|
}
|
|
printf ("\t} else {\n");
|
|
genastore ("src", Dreg, "(extra >> 12) & 7", curi->size, "");
|
|
printf ("\t}\n");
|
|
pop_braces (old_brace_level);
|
|
}
|
|
break;
|
|
case i_BKPT: /* only needed for hardware emulators */
|
|
sync_m68k_pc ();
|
|
printf ("\top_illg (opcode, regs);\n");
|
|
break;
|
|
case i_CALLM: /* not present in 68030 */
|
|
sync_m68k_pc ();
|
|
printf ("\top_illg (opcode, regs);\n");
|
|
break;
|
|
case i_RTM: /* not present in 68030 */
|
|
sync_m68k_pc ();
|
|
printf ("\top_illg (opcode, regs);\n");
|
|
break;
|
|
case i_TRAPcc:
|
|
if (curi->smode != am_unknown && curi->smode != am_illg)
|
|
genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0, 0);
|
|
fill_prefetch_0 ();
|
|
printf ("\tif (cctrue (®s->ccrflags, %d)) { Exception (7, regs, m68k_getpc (regs)); goto %s; }\n", curi->cc, endlabelstr);
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_DIVL:
|
|
sync_m68k_pc ();
|
|
start_brace ();
|
|
printf ("\tuaecptr oldpc = m68k_getpc (regs);\n");
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
printf ("\tm68k_divl(opcode, dst, extra, oldpc);\n");
|
|
break;
|
|
case i_MULL:
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
printf ("\tm68k_mull(opcode, dst, extra);\n");
|
|
break;
|
|
case i_BFTST:
|
|
case i_BFEXTU:
|
|
case i_BFCHG:
|
|
case i_BFEXTS:
|
|
case i_BFCLR:
|
|
case i_BFFFO:
|
|
case i_BFSET:
|
|
case i_BFINS:
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 2, 0, 0);
|
|
start_brace ();
|
|
printf ("\tuae_s32 offset = extra & 0x800 ? (uae_s32)(m68k_dreg (regs, (extra >> 6) & 7)) : ((uae_s32)(extra >> 6) & 0x1f);\n");
|
|
printf ("\tint width = (((extra & 0x20 ? ((int)m68k_dreg (regs, extra & 7)) : extra) -1) & 0x1f) +1;\n");
|
|
if (curi->dmode == Dreg) {
|
|
printf ("\tuae_u32 tmp = m68k_dreg (regs, dstreg) << (offset & 0x1f);\n");
|
|
} else {
|
|
printf ("\tuae_u32 tmp,bf0,bf1;\n");
|
|
printf ("\tdsta += (offset >> 3) | (offset & 0x80000000 ? ~0x1fffffff : 0);\n");
|
|
printf ("\tbf0 = get_long(dsta);bf1 = get_byte(dsta+4) & 0xff;\n");
|
|
printf ("\ttmp = (bf0 << (offset & 7)) | (bf1 >> (8 - (offset & 7)));\n");
|
|
}
|
|
printf ("\ttmp >>= (32 - width);\n");
|
|
printf ("\tSET_NFLG_ALWAYS (®s->ccrflags, tmp & (1 << (width-1)) ? 1 : 0);\n");
|
|
printf ("\tSET_ZFLG (®s->ccrflags, (tmp == 0) ? 1 : 0); SET_VFLG (®s->ccrflags, 0); SET_CFLG (®s->ccrflags, 0);\n");
|
|
switch (curi->mnemo) {
|
|
case i_BFTST:
|
|
break;
|
|
case i_BFEXTU:
|
|
printf ("\tm68k_dreg (regs, (extra >> 12) & 7) = tmp;\n");
|
|
break;
|
|
case i_BFCHG:
|
|
printf ("\ttmp = ~tmp;\n");
|
|
break;
|
|
case i_BFEXTS:
|
|
printf ("\tif (GET_NFLG (®s->ccrflags)) tmp |= width == 32 ? 0 : (-1 << width);\n");
|
|
printf ("\tm68k_dreg (regs, (extra >> 12) & 7) = tmp;\n");
|
|
break;
|
|
case i_BFCLR:
|
|
printf ("\ttmp = 0;\n");
|
|
break;
|
|
case i_BFFFO:
|
|
printf ("\t{ uae_u32 mask = 1 << (width-1);\n");
|
|
printf ("\twhile (mask) { if (tmp & mask) break; mask >>= 1; offset++; }}\n");
|
|
printf ("\tm68k_dreg (regs, (extra >> 12) & 7) = offset;\n");
|
|
break;
|
|
case i_BFSET:
|
|
printf ("\ttmp = 0xffffffff;\n");
|
|
break;
|
|
case i_BFINS:
|
|
printf ("\ttmp = m68k_dreg (regs, (extra >> 12) & 7);\n");
|
|
printf ("\tSET_NFLG (®s->ccrflags, tmp & (1 << (width - 1)) ? 1 : 0);\n");
|
|
printf ("\tSET_ZFLG (®s->ccrflags, (tmp == 0) ? 1 : 0);\n");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (curi->mnemo == i_BFCHG
|
|
|| curi->mnemo == i_BFCLR
|
|
|| curi->mnemo == i_BFSET
|
|
|| curi->mnemo == i_BFINS)
|
|
{
|
|
printf ("\ttmp <<= (32 - width);\n");
|
|
if (curi->dmode == Dreg) {
|
|
printf ("\tm68k_dreg (regs, dstreg) = (m68k_dreg (regs, dstreg) & ((offset & 0x1f) == 0 ? 0 :\n");
|
|
printf ("\t\t(0xffffffff << (32 - (offset & 0x1f))))) |\n");
|
|
printf ("\t\t(tmp >> (offset & 0x1f)) |\n");
|
|
printf ("\t\t(((offset & 0x1f) + width) >= 32 ? 0 :\n");
|
|
printf (" (m68k_dreg (regs, dstreg) & ((uae_u32)0xffffffff >> ((offset & 0x1f) + width))));\n");
|
|
} else {
|
|
printf ("\tbf0 = (bf0 & (0xff000000 << (8 - (offset & 7)))) |\n");
|
|
printf ("\t\t(tmp >> (offset & 7)) |\n");
|
|
printf ("\t\t(((offset & 7) + width) >= 32 ? 0 :\n");
|
|
printf ("\t\t (bf0 & ((uae_u32)0xffffffff >> ((offset & 7) + width))));\n");
|
|
printf ("\tput_long(dsta,bf0 );\n");
|
|
printf ("\tif (((offset & 7) + width) > 32) {\n");
|
|
printf ("\t\tbf1 = (bf1 & (0xff >> (width - 32 + (offset & 7)))) |\n");
|
|
printf ("\t\t\t(tmp << (8 - (offset & 7)));\n");
|
|
printf ("\t\tput_byte(dsta+4,bf1);\n");
|
|
printf ("\t}\n");
|
|
}
|
|
}
|
|
break;
|
|
case i_PACK:
|
|
if (curi->smode == Dreg) {
|
|
printf ("\tuae_u16 val = m68k_dreg (regs, srcreg) + %s;\n", gen_nextiword (0));
|
|
printf ("\tm68k_dreg (regs, dstreg) = (m68k_dreg (regs, dstreg) & 0xffffff00) | ((val >> 4) & 0xf0) | (val & 0xf);\n");
|
|
} else {
|
|
printf ("\tuae_u16 val;\n");
|
|
printf ("\tm68k_areg (regs, srcreg) -= areg_byteinc[srcreg];\n");
|
|
printf ("\tval = (uae_u16)get_byte(m68k_areg (regs, srcreg));\n");
|
|
printf ("\tm68k_areg (regs, srcreg) -= areg_byteinc[srcreg];\n");
|
|
printf ("\tval = (val | ((uae_u16)get_byte(m68k_areg (regs, srcreg)) << 8)) + %s;\n", gen_nextiword (0));
|
|
printf ("\tm68k_areg (regs, dstreg) -= areg_byteinc[dstreg];\n");
|
|
printf ("\tput_byte(m68k_areg (regs, dstreg),((val >> 4) & 0xf0) | (val & 0xf));\n");
|
|
}
|
|
break;
|
|
case i_UNPK:
|
|
if (curi->smode == Dreg) {
|
|
printf ("\tuae_u16 val = m68k_dreg (regs, srcreg);\n");
|
|
printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword (0));
|
|
printf ("\tm68k_dreg (regs, dstreg) = (m68k_dreg (regs, dstreg) & 0xffff0000) | (val & 0xffff);\n");
|
|
} else {
|
|
printf ("\tuae_u16 val;\n");
|
|
printf ("\tm68k_areg (regs, srcreg) -= areg_byteinc[srcreg];\n");
|
|
printf ("\tval = (uae_u16)get_byte(m68k_areg (regs, srcreg));\n");
|
|
printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword (0));
|
|
printf ("\tm68k_areg (regs, dstreg) -= areg_byteinc[dstreg];\n");
|
|
printf ("\tput_byte(m68k_areg (regs, dstreg),val);\n");
|
|
printf ("\tm68k_areg (regs, dstreg) -= areg_byteinc[dstreg];\n");
|
|
printf ("\tput_byte(m68k_areg(regs, dstreg),val >> 8);\n");
|
|
}
|
|
break;
|
|
case i_TAS:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0);
|
|
genflags (flag_logical, curi->size, "src", "", "");
|
|
if (!isreg (curi->smode))
|
|
addcycles (2);
|
|
fill_prefetch_next ();
|
|
printf ("\tsrc |= 0x80;\n");
|
|
genastore ("src", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_FPP:
|
|
fpulimit();
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
printf ("\tfpp_opp (opcode, regs, extra);\n");
|
|
break;
|
|
case i_FDBcc:
|
|
fpulimit();
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
printf ("\tfdbcc_opp (opcode, regs, extra);\n");
|
|
break;
|
|
case i_FScc:
|
|
fpulimit();
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
printf ("\tfscc_opp (opcode, regs, extra);\n");
|
|
break;
|
|
case i_FTRAPcc:
|
|
fpulimit();
|
|
sync_m68k_pc ();
|
|
start_brace ();
|
|
printf ("\tuaecptr oldpc = m68k_getpc (regs);\n");
|
|
if (curi->smode != am_unknown && curi->smode != am_illg)
|
|
genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
printf ("\tftrapcc_opp (opcode, regs, oldpc);\n");
|
|
break;
|
|
case i_FBcc:
|
|
fpulimit();
|
|
sync_m68k_pc ();
|
|
start_brace ();
|
|
printf ("\tuaecptr pc = m68k_getpc (regs);\n");
|
|
genamode (curi->dmode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
printf ("\tfbcc_opp (opcode, regs, pc,extra);\n");
|
|
break;
|
|
case i_FSAVE:
|
|
fpulimit();
|
|
sync_m68k_pc ();
|
|
printf ("\tfsave_opp (opcode, regs);\n");
|
|
break;
|
|
case i_FRESTORE:
|
|
fpulimit();
|
|
sync_m68k_pc ();
|
|
printf ("\tfrestore_opp (opcode, regs);\n");
|
|
break;
|
|
|
|
case i_CINVL:
|
|
printf ("\tif (opcode&0x80)\n"
|
|
"\t\tflush_icache(31);\n");
|
|
break;
|
|
case i_CINVP:
|
|
printf ("\tif (opcode&0x80)\n"
|
|
"\t\tflush_icache(32);\n");
|
|
break;
|
|
case i_CINVA:
|
|
printf ("\tif (opcode&0x80)\n"
|
|
"\t\tflush_icache(33);\n");
|
|
break;
|
|
case i_CPUSHL:
|
|
printf ("\tif (opcode&0x80)\n"
|
|
"\t\tflush_icache(41);\n");
|
|
break;
|
|
case i_CPUSHP:
|
|
printf ("\tif (opcode&0x80)\n"
|
|
"\t\tflush_icache(42);\n");
|
|
break;
|
|
case i_CPUSHA:
|
|
printf ("\tif (opcode&0x80)\n"
|
|
"\t\tflush_icache(43);\n");
|
|
break;
|
|
case i_MOVE16:
|
|
if ((opcode & 0xfff8) == 0xf620) {
|
|
/* MOVE16 (Ax)+,(Ay)+ */
|
|
printf ("\tuaecptr mems = m68k_areg (regs, srcreg) & ~15, memd;\n");
|
|
printf ("\tdstreg = (%s >> 12) & 7;\n", gen_nextiword(0));
|
|
printf ("\tmemd = m68k_areg (regs, dstreg) & ~15;\n");
|
|
printf ("\tput_long(memd, get_long(mems));\n");
|
|
printf ("\tput_long(memd+4, get_long(mems+4));\n");
|
|
printf ("\tput_long(memd+8, get_long(mems+8));\n");
|
|
printf ("\tput_long(memd+12, get_long(mems+12));\n");
|
|
printf ("\tif (srcreg != dstreg)\n");
|
|
printf ("\tm68k_areg (regs, srcreg) += 16;\n");
|
|
printf ("\tm68k_areg (regs, dstreg) += 16;\n");
|
|
} else {
|
|
/* Other variants */
|
|
genamode (curi->smode, "srcreg", curi->size, "mems", 0, 2, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "memd", 0, 2, 0);
|
|
printf ("\tmemsa &= ~15;\n");
|
|
printf ("\tmemda &= ~15;\n");
|
|
printf ("\tput_long(memda, get_long(memsa));\n");
|
|
printf ("\tput_long(memda+4, get_long(memsa+4));\n");
|
|
printf ("\tput_long(memda+8, get_long(memsa+8));\n");
|
|
printf ("\tput_long(memda+12, get_long(memsa+12));\n");
|
|
if ((opcode & 0xfff8) == 0xf600)
|
|
printf ("\tm68k_areg (regs, srcreg) += 16;\n");
|
|
else if ((opcode & 0xfff8) == 0xf608)
|
|
printf ("\tm68k_areg (regs, dstreg) += 16;\n");
|
|
}
|
|
break;
|
|
|
|
case i_MMUOP:
|
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0);
|
|
sync_m68k_pc ();
|
|
printf ("\tmmu_op (opcode, regs, extra);\n");
|
|
break;
|
|
default:
|
|
abort ();
|
|
break;
|
|
}
|
|
finish_braces ();
|
|
if (limit_braces) {
|
|
printf ("\n#endif\n");
|
|
n_braces = limit_braces;
|
|
limit_braces = 0;
|
|
finish_braces ();
|
|
}
|
|
fill_prefetch_finish ();
|
|
sync_m68k_pc ();
|
|
did_prefetch = 0;
|
|
}
|
|
|
|
static void generate_includes (FILE * f)
|
|
{
|
|
fprintf (f, "#include \"sysconfig.h\"\n");
|
|
fprintf (f, "#include \"sysdeps.h\"\n");
|
|
fprintf (f, "#include \"options.h\"\n");
|
|
fprintf (f, "#include \"memory.h\"\n");
|
|
fprintf (f, "#include \"custom.h\"\n");
|
|
fprintf (f, "#include \"events.h\"\n");
|
|
fprintf (f, "#include \"newcpu.h\"\n");
|
|
fprintf (f, "#include \"machdep/m68kops.h\"\n");
|
|
fprintf (f, "#include \"cpu_prefetch.h\"\n");
|
|
fprintf (f, "#include \"cputbl.h\"\n");
|
|
|
|
fprintf (f, "#define CPUFUNC(x) x##_ff\n"
|
|
"#define SET_CFLG_ALWAYS(flags, x) SET_CFLG(flags, x)\n"
|
|
"#define SET_NFLG_ALWAYS(flags, x) SET_NFLG(flags, x)\n"
|
|
"#ifdef NOFLAGS\n"
|
|
"#include \"noflags.h\"\n"
|
|
"#endif\n");
|
|
}
|
|
|
|
static int postfix;
|
|
|
|
|
|
static char *decodeEA (amodes mode, wordsizes size)
|
|
{
|
|
static char buffer[80];
|
|
|
|
buffer[0] = 0;
|
|
switch (mode){
|
|
case Dreg:
|
|
strcpy (buffer,"Dn");
|
|
break;
|
|
case Areg:
|
|
strcpy (buffer,"An");
|
|
break;
|
|
case Aind:
|
|
strcpy (buffer,"(An)");
|
|
break;
|
|
case Aipi:
|
|
strcpy (buffer,"(An)+");
|
|
break;
|
|
case Apdi:
|
|
strcpy (buffer,"-(An)");
|
|
break;
|
|
case Ad16:
|
|
strcpy (buffer,"(d16,An)");
|
|
break;
|
|
case Ad8r:
|
|
strcpy (buffer,"(d8,An,Xn)");
|
|
break;
|
|
case PC16:
|
|
strcpy (buffer,"(d16,PC)");
|
|
break;
|
|
case PC8r:
|
|
strcpy (buffer,"(d8,PC,Xn)");
|
|
break;
|
|
case absw:
|
|
strcpy (buffer,"(xxx).W");
|
|
break;
|
|
case absl:
|
|
strcpy (buffer,"(xxx).L");
|
|
break;
|
|
case imm:
|
|
switch (size){
|
|
case sz_byte:
|
|
strcpy (buffer,"#<data>.B");
|
|
break;
|
|
case sz_word:
|
|
strcpy (buffer,"#<data>.W");
|
|
break;
|
|
case sz_long:
|
|
strcpy (buffer,"#<data>.L");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case imm0:
|
|
strcpy (buffer,"#<data>.B");
|
|
break;
|
|
case imm1:
|
|
strcpy (buffer,"#<data>.W");
|
|
break;
|
|
case imm2:
|
|
strcpy (buffer,"#<data>.L");
|
|
break;
|
|
case immi:
|
|
strcpy (buffer,"#<data>");
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
static char *outopcode (int opcode)
|
|
{
|
|
static char out[100];
|
|
struct instr *ins;
|
|
int i;
|
|
|
|
ins = &table68k[opcode];
|
|
for (i = 0; lookuptab[i].name[0]; i++) {
|
|
if (ins->mnemo == lookuptab[i].mnemo)
|
|
break;
|
|
}
|
|
strcpy (out, lookuptab[i].name);
|
|
if (ins->size == sz_byte)
|
|
strcat (out,".B");
|
|
if (ins->size == sz_word)
|
|
strcat (out,".W");
|
|
if (ins->size == sz_long)
|
|
strcat (out,".L");
|
|
strcat (out," ");
|
|
if (ins->suse)
|
|
strcat (out, decodeEA (ins->smode, ins->size));
|
|
if (ins->duse) {
|
|
if (ins->suse) strcat (out,",");
|
|
strcat (out, decodeEA (ins->dmode, ins->size));
|
|
}
|
|
return out;
|
|
}
|
|
|
|
static void generate_one_opcode (int rp)
|
|
{
|
|
int i;
|
|
uae_u16 smsk, dmsk;
|
|
long int opcode = opcode_map[rp];
|
|
int i68000 = table68k[opcode].clev > 0;
|
|
|
|
if (table68k[opcode].mnemo == i_ILLG
|
|
|| table68k[opcode].clev > cpu_level)
|
|
return;
|
|
|
|
for (i = 0; lookuptab[i].name[0]; i++) {
|
|
if (table68k[opcode].mnemo == lookuptab[i].mnemo)
|
|
break;
|
|
}
|
|
|
|
if (table68k[opcode].handler != -1)
|
|
return;
|
|
|
|
if (opcode_next_clev[rp] != cpu_level) {
|
|
fprintf (stblfile, "{ CPUFUNC(op_%04lx_%d), %ld}, /* %s */\n", opcode, opcode_last_postfix[rp],
|
|
opcode, lookuptab[i].name);
|
|
return;
|
|
}
|
|
if (i68000)
|
|
fprintf (stblfile, "#ifndef CPUEMU_68000_ONLY\n");
|
|
fprintf (stblfile, "{ %sCPUFUNC(op_%04lx_%d), %ld }, /* %s */\n",
|
|
using_ce ? "(cpuop_func*)" : "", opcode, postfix, opcode, lookuptab[i].name);
|
|
if (i68000)
|
|
fprintf (stblfile, "#endif\n");
|
|
fprintf (headerfile, "extern %s op_%04lx_%d_nf;\n",
|
|
using_ce ? "cpuop_func_ce" : "cpuop_func", opcode, postfix);
|
|
fprintf (headerfile, "extern %s op_%04lx_%d_ff;\n",
|
|
using_ce ? "cpuop_func_ce" : "cpuop_func", opcode, postfix);
|
|
printf ("/* %s */\n", outopcode (opcode));
|
|
if (i68000)
|
|
printf("#ifndef CPUEMU_68000_ONLY\n");
|
|
printf ("%s REGPARAM2 CPUFUNC(op_%04lx_%d)(uae_u32 opcode, struct regstruct *regs)\n{\n", using_ce ? "void" : "unsigned long", opcode, postfix);
|
|
|
|
switch (table68k[opcode].stype) {
|
|
case 0: smsk = 7; break;
|
|
case 1: smsk = 255; break;
|
|
case 2: smsk = 15; break;
|
|
case 3: smsk = 7; break;
|
|
case 4: smsk = 7; break;
|
|
case 5: smsk = 63; break;
|
|
case 7: smsk = 3; break;
|
|
default: abort ();
|
|
}
|
|
dmsk = 7;
|
|
|
|
next_cpu_level = -1;
|
|
if (table68k[opcode].suse
|
|
&& table68k[opcode].smode != imm && table68k[opcode].smode != imm0
|
|
&& table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2
|
|
&& table68k[opcode].smode != absw && table68k[opcode].smode != absl
|
|
&& table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16)
|
|
{
|
|
if (table68k[opcode].spos == -1) {
|
|
if (((int) table68k[opcode].sreg) >= 128)
|
|
printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].sreg);
|
|
else
|
|
printf ("\tuae_u32 srcreg = %d;\n", (int) table68k[opcode].sreg);
|
|
} else {
|
|
char source[100];
|
|
int pos = table68k[opcode].spos;
|
|
|
|
if (pos)
|
|
sprintf (source, "((opcode >> %d) & %d)", pos, smsk);
|
|
else
|
|
sprintf (source, "(opcode & %d)", smsk);
|
|
|
|
if (table68k[opcode].stype == 3)
|
|
printf ("\tuae_u32 srcreg = imm8_table[%s];\n", source);
|
|
else if (table68k[opcode].stype == 1)
|
|
printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source);
|
|
else
|
|
printf ("\tuae_u32 srcreg = %s;\n", source);
|
|
}
|
|
}
|
|
if (table68k[opcode].duse
|
|
/* Yes, the dmode can be imm, in case of LINK or DBcc */
|
|
&& table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0
|
|
&& table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2
|
|
&& table68k[opcode].dmode != absw && table68k[opcode].dmode != absl)
|
|
{
|
|
if (table68k[opcode].dpos == -1) {
|
|
if (((int) table68k[opcode].dreg) >= 128)
|
|
printf ("\tuae_u32 dstreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].dreg);
|
|
else
|
|
printf ("\tuae_u32 dstreg = %d;\n", (int) table68k[opcode].dreg);
|
|
} else {
|
|
int pos = table68k[opcode].dpos;
|
|
if (pos)
|
|
printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
|
|
pos, dmsk);
|
|
else
|
|
printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk);
|
|
}
|
|
}
|
|
need_endlabel = 0;
|
|
endlabelno++;
|
|
sprintf (endlabelstr, "endlabel%d", endlabelno);
|
|
gen_opcode (opcode);
|
|
if (need_endlabel)
|
|
printf ("%s: ;\n", endlabelstr);
|
|
returncycles ("", insn_n_cycles);
|
|
printf ("}\n");
|
|
if (i68000)
|
|
printf("#endif\n");
|
|
opcode_next_clev[rp] = next_cpu_level;
|
|
opcode_last_postfix[rp] = postfix;
|
|
}
|
|
|
|
static void generate_func (void)
|
|
{
|
|
int j, rp;
|
|
|
|
/* sam: this is for people with low memory (eg. me :)) */
|
|
printf ("\n"
|
|
"#if !defined(PART_1) && !defined(PART_2) && "
|
|
"!defined(PART_3) && !defined(PART_4) && "
|
|
"!defined(PART_5) && !defined(PART_6) && "
|
|
"!defined(PART_7) && !defined(PART_8)"
|
|
"\n"
|
|
"#define PART_1 1\n"
|
|
"#define PART_2 1\n"
|
|
"#define PART_3 1\n"
|
|
"#define PART_4 1\n"
|
|
"#define PART_5 1\n"
|
|
"#define PART_6 1\n"
|
|
"#define PART_7 1\n"
|
|
"#define PART_8 1\n"
|
|
"#endif\n\n");
|
|
|
|
rp = 0;
|
|
for(j = 1; j <= 8; ++j) {
|
|
int k = (j * nr_cpuop_funcs) / 8;
|
|
printf ("#ifdef PART_%d\n",j);
|
|
for (; rp < k; rp++)
|
|
generate_one_opcode (rp);
|
|
printf ("#endif\n\n");
|
|
}
|
|
|
|
fprintf (stblfile, "{ 0, 0 }};\n");
|
|
}
|
|
|
|
int main (int argc, char **argv)
|
|
{
|
|
int i, rp, postfix2;
|
|
char fname[100];
|
|
|
|
if (argc > 1) {
|
|
if (strcasecmp (argv[1], "--optimized-flags") == 0)
|
|
optimized_flags = 1;
|
|
}
|
|
|
|
read_table68k ();
|
|
do_merges ();
|
|
|
|
opcode_map = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
|
|
opcode_last_postfix = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
|
|
opcode_next_clev = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs);
|
|
counts = (unsigned long *) xmalloc (65536 * sizeof (unsigned long));
|
|
read_counts ();
|
|
|
|
/* It would be a lot nicer to put all in one file (we'd also get rid of
|
|
* cputbl.h that way), but cpuopti can't cope. That could be fixed, but
|
|
* I don't dare to touch the 68k version. */
|
|
|
|
headerfile = fopen ("cputbl.h", "wb");
|
|
|
|
stblfile = fopen ("cpustbl.c", "wb");
|
|
generate_includes (stblfile);
|
|
|
|
using_prefetch = 0;
|
|
using_exception_3 = 1;
|
|
using_ce = 0;
|
|
|
|
postfix2 = -1;
|
|
for (i = 0; i < 7; i++) {
|
|
postfix = i;
|
|
if (i == 0 || i == 5 || i == 6) {
|
|
fprintf (stblfile, "#ifdef CPUEMU_%d\n", postfix);
|
|
postfix2 = postfix;
|
|
sprintf (fname, "cpuemu_%d.c", postfix);
|
|
freopen (fname, "wb", stdout);
|
|
generate_includes (stdout);
|
|
}
|
|
cpu_level = 4 - i;
|
|
if (i >= 5) /* Was i==5||i==6 but GCC4.1 will then misoptimize this condition out */ {
|
|
cpu_level = 0;
|
|
using_prefetch = 1;
|
|
using_exception_3 = 1;
|
|
if (i == 6) using_ce = 1;
|
|
for (rp = 0; rp < nr_cpuop_funcs; rp++)
|
|
opcode_next_clev[rp] = 0;
|
|
}
|
|
if (i > 0 && i < 4)
|
|
fprintf (stblfile, "#ifndef CPUEMU_68000_ONLY\n");
|
|
fprintf (stblfile, "const struct cputbl CPUFUNC(op_smalltbl_%d)[] = {\n", postfix);
|
|
generate_func ();
|
|
if (i > 0 && i < 4)
|
|
fprintf (stblfile, "#endif /* CPUEMU_68000_ONLY */\n");
|
|
if (postfix2 >= 0)
|
|
fprintf (stblfile, "#endif /* CPUEMU_%d */\n", postfix2);
|
|
postfix2 = -1;
|
|
}
|
|
|
|
free (table68k);
|
|
return 0;
|
|
}
|