mirror of
https://github.com/LIV2/WinUAE.git
synced 2025-12-06 00:12:52 +00:00
1724 lines
54 KiB
C++
1724 lines
54 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 "sysdeps.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 cpu_level;
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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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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] = 5;
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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] = 5;
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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;
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static int m68k_pc_offset = 0;
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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 const char *gen_nextilong (void)
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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 += 4;
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sprintf (buffer, "xget_ilong (%d)", r);
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return buffer;
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}
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static const char *gen_nextiword (void)
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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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sprintf (buffer, "xget_iword (%d)", r);
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return buffer;
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}
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static const char *gen_nextibyte (void)
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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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sprintf (buffer, "xget_ibyte (%d)", r);
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return buffer;
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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 ("xm68k_incpc(%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 genamode (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem)
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{
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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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#if defined(AMIGA) && !defined(WARPUP)
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/* sam: I don't know why gcc.2.7.2.1 produces a code worse */
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/* if it is not done like that: */
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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 = xm68k_dreg (%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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#if defined(AMIGA) && !defined(WARPUP)
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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 = xm68k_dreg (%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 = xm68k_dreg (%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 = xm68k_areg (%s);\n", name, reg);
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break;
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case sz_long:
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printf ("\tuae_s32 %s = xm68k_areg (%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 = xm68k_areg (%s);\n", name, reg);
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break;
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case Aipi:
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printf ("\tuaecptr %sa = xm68k_areg (%s);\n", name, reg);
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break;
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case Apdi:
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switch (size) {
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case sz_byte:
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if (movem)
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printf ("\tuaecptr %sa = xm68k_areg (%s);\n", name, reg);
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else
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printf ("\tuaecptr %sa = xm68k_areg (%s) - xareg_byteinc[%s];\n", name, reg, reg);
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break;
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case sz_word:
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printf ("\tuaecptr %sa = xm68k_areg (%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 ("\tuaecptr %sa = xm68k_areg (%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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break;
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case Ad16:
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printf ("\tuaecptr %sa = xm68k_areg (%s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword ());
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break;
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case Ad8r:
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if (cpu_level > 1) {
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if (next_cpu_level < 1)
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next_cpu_level = 1;
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sync_m68k_pc ();
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start_brace ();
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/* This would ordinarily be done in gen_nextiword, which we bypass. */
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printf ("\tuaecptr %sa = xget_disp_ea_020 (xm68k_areg (%s), xnext_iword ());\n", name, reg);
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} else
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printf ("\tuaecptr %sa = xget_disp_ea_000 (xm68k_areg (%s), %s);\n", name, reg, gen_nextiword ());
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break;
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case PC16:
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printf ("\tuaecptr %sa = xm68k_getpc () + %d;\n", name, m68k_pc_offset);
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printf ("\t%sa += (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
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break;
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case PC8r:
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if (cpu_level > 1) {
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if (next_cpu_level < 1)
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next_cpu_level = 1;
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sync_m68k_pc ();
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start_brace ();
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/* This would ordinarily be done in gen_nextiword, which we bypass. */
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printf ("\tuaecptr tmppc = xm68k_getpc ();\n");
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printf ("\tuaecptr %sa = xget_disp_ea_020(tmppc, xnext_iword ());\n", name);
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} else {
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printf ("\tuaecptr tmppc = xm68k_getpc () + %d;\n", m68k_pc_offset);
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printf ("\tuaecptr %sa = xget_disp_ea_000 (tmppc, %s);\n", name, gen_nextiword ());
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}
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break;
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case absw:
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printf ("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
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break;
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case absl:
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printf ("\tuaecptr %sa = %s;\n", name, gen_nextilong ());
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break;
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case imm:
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if (getv != 1)
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abort ();
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switch (size) {
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case sz_byte:
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printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
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break;
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case sz_word:
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printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
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break;
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case sz_long:
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printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
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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 imm0:
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if (getv != 1)
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abort ();
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printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
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return;
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case imm1:
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if (getv != 1)
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abort ();
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printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
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return;
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case imm2:
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if (getv != 1)
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abort ();
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printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
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return;
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case immi:
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if (getv != 1)
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abort ();
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printf ("\tuae_u32 %s = %s;\n", name, reg);
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return;
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default:
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abort ();
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}
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if (getv == 1) {
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start_brace ();
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switch (size) {
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case sz_byte: printf ("\tuae_s8 %s = xget_byte (%sa);\n", name, name); break;
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case sz_word: printf ("\tuae_s16 %s = xget_word (%sa);\n", name, name); break;
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case sz_long: printf ("\tuae_s32 %s = xget_long (%sa);\n", name, name); break;
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default: abort ();
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}
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}
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/* We now might have to fix up the register for pre-dec or post-inc
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* addressing modes. */
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if (!movem)
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switch (mode) {
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case Aipi:
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switch (size) {
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case sz_byte:
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printf ("\txm68k_areg (%s) += xareg_byteinc[%s];\n", reg, reg);
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break;
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case sz_word:
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printf ("\txm68k_areg (%s) += 2;\n", reg);
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break;
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case sz_long:
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printf ("\txm68k_areg (%s) += 4;\n", reg);
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break;
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default:
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abort ();
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}
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break;
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case Apdi:
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printf ("\txm68k_areg (%s) = %sa;\n", reg, name);
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break;
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default:
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break;
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}
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}
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static void genastore (char *from, amodes mode, char *reg, wordsizes size, char *to)
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{
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switch (mode) {
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case Dreg:
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switch (size) {
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case sz_byte:
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printf ("\txm68k_dreg (%s) = (xm68k_dreg (%s) & ~0xff) | ((%s) & 0xff);\n", reg, reg, from);
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break;
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case sz_word:
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printf ("\txm68k_dreg (%s) = (xm68k_dreg (%s) & ~0xffff) | ((%s) & 0xffff);\n", reg, reg, from);
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break;
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case sz_long:
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printf ("\txm68k_dreg (%s) = (%s);\n", reg, from);
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break;
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default:
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abort ();
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}
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break;
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case Areg:
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switch (size) {
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case sz_word:
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printf ("\txm68k_areg (%s) = (uae_s32)(uae_s16)(%s);\n", reg, from);
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break;
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case sz_long:
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printf ("\txm68k_areg (%s) = (%s);\n", reg, from);
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break;
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default:
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abort ();
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}
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break;
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case Aind:
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case Aipi:
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case Apdi:
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case Ad16:
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case Ad8r:
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case absw:
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case absl:
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case PC16:
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case PC8r:
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if (using_prefetch)
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sync_m68k_pc ();
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switch (size) {
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case sz_byte:
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printf ("\txput_byte (%sa,%s);\n", to, from);
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break;
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case sz_word:
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if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
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abort ();
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printf ("\txput_word (%sa,%s);\n", to, from);
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break;
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case sz_long:
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if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
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abort ();
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printf ("\txput_long (%sa,%s);\n", to, from);
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break;
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default:
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abort ();
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}
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break;
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case imm:
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case imm0:
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case imm1:
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case imm2:
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case immi:
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abort ();
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break;
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default:
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abort ();
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}
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}
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static void genmovemel (uae_u16 opcode)
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{
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char getcode[100];
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int size = table68k[opcode].size == sz_long ? 4 : 2;
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if (table68k[opcode].size == sz_long) {
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strcpy (getcode, "xget_long (srca)");
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} else {
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strcpy (getcode, "(uae_s32)(uae_s16)xget_word (srca)");
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}
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printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
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printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
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genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
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start_brace ();
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printf ("\twhile (dmask) { xm68k_dreg (xmovem_index1[dmask]) = %s; srca += %d; dmask = xmovem_next[dmask]; }\n",
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getcode, size);
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printf ("\twhile (amask) { xm68k_areg (xmovem_index1[amask]) = %s; srca += %d; amask = xmovem_next[amask]; }\n",
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getcode, size);
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if (table68k[opcode].dmode == Aipi)
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printf ("\txm68k_areg (dstreg) = srca;\n");
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}
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static void genmovemle (uae_u16 opcode)
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{
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char putcode[100];
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int size = table68k[opcode].size == sz_long ? 4 : 2;
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if (table68k[opcode].size == sz_long) {
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strcpy (putcode, "xput_long (srca,");
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} else {
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strcpy (putcode, "xput_word (srca,");
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}
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printf ("\tuae_u16 mask = %s;\n", gen_nextiword ());
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genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
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if (using_prefetch)
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sync_m68k_pc ();
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start_brace ();
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if (table68k[opcode].dmode == Apdi) {
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printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
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printf ("\twhile (amask) { srca -= %d; %s xm68k_areg (xmovem_index2[amask])); amask = xmovem_next[amask]; }\n",
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size, putcode);
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printf ("\twhile (dmask) { srca -= %d; %s xm68k_dreg (xmovem_index2[dmask])); dmask = xmovem_next[dmask]; }\n",
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size, putcode);
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printf ("\txm68k_areg (dstreg) = srca;\n");
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} else {
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printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
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printf ("\twhile (dmask) { %s xm68k_dreg (xmovem_index1[dmask])); srca += %d; dmask = xmovem_next[dmask]; }\n",
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putcode, size);
|
|
printf ("\twhile (amask) { %s xm68k_areg (xmovem_index1[amask])); srca += %d; amask = xmovem_next[amask]; }\n",
|
|
putcode, size);
|
|
}
|
|
}
|
|
|
|
static void duplicate_carry (void)
|
|
{
|
|
printf ("\tXCOPY_CARRY;\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, char *value, char *src, 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;\n", sstr);
|
|
printf ("\t" BOOL_TYPE " flgo = %s < 0;\n", dstr);
|
|
printf ("\t" BOOL_TYPE " flgn = %s < 0;\n", vstr);
|
|
break;
|
|
}
|
|
|
|
switch (type) {
|
|
case flag_logical:
|
|
printf ("\tXCLEAR_CZNV;\n");
|
|
printf ("\tXSET_ZFLG (%s == 0);\n", vstr);
|
|
printf ("\tXSET_NFLG (%s < 0);\n", vstr);
|
|
break;
|
|
case flag_logical_noclobber:
|
|
printf ("\tXSET_ZFLG (%s == 0);\n", vstr);
|
|
printf ("\tXSET_NFLG (%s < 0);\n", vstr);
|
|
break;
|
|
case flag_av:
|
|
printf ("\tXSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
|
|
break;
|
|
case flag_sv:
|
|
printf ("\tXSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
|
|
break;
|
|
case flag_zn:
|
|
printf ("\tXSET_ZFLG (XGET_ZFLG & (%s == 0));\n", vstr);
|
|
printf ("\tXSET_NFLG (%s < 0);\n", vstr);
|
|
break;
|
|
case flag_add:
|
|
printf ("\tXSET_ZFLG (%s == 0);\n", vstr);
|
|
printf ("\tXSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
|
|
printf ("\tXSET_CFLG (%s < %s);\n", undstr, usstr);
|
|
duplicate_carry ();
|
|
printf ("\tXSET_NFLG (flgn != 0);\n");
|
|
break;
|
|
case flag_sub:
|
|
printf ("\tXSET_ZFLG (%s == 0);\n", vstr);
|
|
printf ("\tXSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
|
|
printf ("\tXSET_CFLG (%s > %s);\n", usstr, udstr);
|
|
duplicate_carry ();
|
|
printf ("\tXSET_NFLG (flgn != 0);\n");
|
|
break;
|
|
case flag_addx:
|
|
printf ("\tXSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n"); /* minterm SON: 0x42 */
|
|
printf ("\tXSET_CFLG (flgs ^ ((flgs ^ flgo) & (flgo ^ flgn)));\n"); /* minterm SON: 0xD4 */
|
|
duplicate_carry ();
|
|
break;
|
|
case flag_subx:
|
|
printf ("\tXSET_VFLG ((flgs ^ flgo) & (flgo ^ flgn));\n"); /* minterm SON: 0x24 */
|
|
printf ("\tXSET_CFLG (flgs ^ ((flgs ^ flgn) & (flgo ^ flgn)));\n"); /* minterm SON: 0xB2 */
|
|
duplicate_carry ();
|
|
break;
|
|
case flag_cmp:
|
|
printf ("\tXSET_ZFLG (%s == 0);\n", vstr);
|
|
printf ("\tXSET_VFLG ((flgs != flgo) && (flgn != flgo));\n");
|
|
printf ("\tXSET_CFLG (%s > %s);\n", usstr, udstr);
|
|
printf ("\tXSET_NFLG (flgn != 0);\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void genflags (flagtypes type, wordsizes size, char *value, char *src, 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. */
|
|
#ifdef 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 & ~(FLAGVAL_Z | FLAGVAL_N);\n");
|
|
if (strcmp (value, "0") == 0) {
|
|
printf ("\tSET_CZNV (olcznv | FLAGVAL_Z);\n");
|
|
} else {
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
|
|
case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
|
|
case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
|
|
}
|
|
printf ("\tIOR_CZNV (oldcznv);\n");
|
|
}
|
|
printf ("\t}\n");
|
|
return;
|
|
case flag_logical:
|
|
if (strcmp (value, "0") == 0) {
|
|
printf ("\tSET_CZNV (FLAGVAL_Z);\n");
|
|
} else {
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_testb ((uae_s8)(%s));\n", value); break;
|
|
case sz_word: printf ("\toptflag_testw ((uae_s16)(%s));\n", value); break;
|
|
case sz_long: printf ("\toptflag_testl ((uae_s32)(%s));\n", value); break;
|
|
}
|
|
}
|
|
return;
|
|
|
|
case flag_add:
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
|
|
case sz_word: printf ("\toptflag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
|
|
case sz_long: printf ("\toptflag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
|
|
}
|
|
return;
|
|
|
|
case flag_sub:
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
|
|
case sz_word: printf ("\toptflag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
|
|
case sz_long: printf ("\toptflag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
|
|
}
|
|
return;
|
|
|
|
case flag_cmp:
|
|
switch (size) {
|
|
case sz_byte: printf ("\toptflag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
|
|
case sz_word: printf ("\toptflag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
|
|
case sz_long: printf ("\toptflag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
|
|
}
|
|
return;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
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 gen_opcode (unsigned long int opcode)
|
|
{
|
|
struct instr *curi = table68k + opcode;
|
|
|
|
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:
|
|
case 3:
|
|
return;
|
|
}
|
|
|
|
m68k_pc_offset = 2;
|
|
start_brace ();
|
|
|
|
switch (curi->mnemo) {
|
|
case i_OR:
|
|
case i_AND:
|
|
case i_EOR:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
printf ("\tsrc %c= dst;\n", curi->mnemo == i_OR ? '|' : curi->mnemo == i_AND ? '&' : '^');
|
|
genflags (flag_logical, curi->size, "src", "", "");
|
|
genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_SUB:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
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);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
|
|
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);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = dst - src - (XGET_XFLG ? 1 : 0);\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);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
start_brace ();
|
|
printf ("\tuae_u16 newv_lo = (dst & 0xF) - (src & 0xF) - (XGET_XFLG ? 1 : 0);\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) - (XGET_XFLG ? 1 : 0)) & 0x100) > 0xFF) { newv -= 0x60; }\n");
|
|
printf ("\tXSET_CFLG ((((dst & 0xFF) - (src & 0xFF) - bcd - (XGET_XFLG ? 1 : 0)) & 0x300) > 0xFF);\n");
|
|
duplicate_carry ();
|
|
genflags (flag_zn, curi->size, "newv", "", "");
|
|
printf ("\tXSET_VFLG ((tmp_newv & 0x80) != 0 && (newv & 0x80) == 0);\n");
|
|
genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_ADD:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
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);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
|
|
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);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = dst + src + (XGET_XFLG ? 1 : 0);\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);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
start_brace ();
|
|
printf ("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + (XGET_XFLG ? 1 : 0);\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 ("\tXSET_CFLG (cflg);\n");
|
|
duplicate_carry ();
|
|
genflags (flag_zn, curi->size, "newv", "", "");
|
|
printf ("\tXSET_VFLG ((tmp_newv & 0x80) == 0 && (newv & 0x80) != 0);\n");
|
|
genastore ("newv", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_NEG:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
start_brace ();
|
|
genflags (flag_sub, curi->size, "dst", "src", "0");
|
|
genastore ("dst", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_NEGX:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = 0 - src - (XGET_XFLG ? 1 : 0);\n");
|
|
genflags (flag_subx, curi->size, "newv", "src", "0");
|
|
genflags (flag_zn, curi->size, "newv", "", "");
|
|
genastore ("newv", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_NBCD:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
start_brace ();
|
|
printf ("\tuae_u16 newv_lo = - (src & 0xF) - (XGET_XFLG ? 1 : 0);\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 ("\tXSET_CFLG (cflg);\n");
|
|
duplicate_carry();
|
|
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", 2, 0);
|
|
genflags (flag_logical, curi->size, "0", "", "");
|
|
genastore ("0", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_NOT:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
start_brace ();
|
|
printf ("\tuae_u32 dst = ~src;\n");
|
|
genflags (flag_logical, curi->size, "dst", "", "");
|
|
genastore ("dst", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_TST:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genflags (flag_logical, curi->size, "src", "", "");
|
|
break;
|
|
case i_BTST:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
if (curi->size == sz_byte)
|
|
printf ("\tsrc &= 7;\n");
|
|
else
|
|
printf ("\tsrc &= 31;\n");
|
|
printf ("\tXSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
|
|
break;
|
|
case i_BCHG:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
if (curi->size == sz_byte)
|
|
printf ("\tsrc &= 7;\n");
|
|
else
|
|
printf ("\tsrc &= 31;\n");
|
|
printf ("\tdst ^= (1 << src);\n");
|
|
printf ("\tXSET_ZFLG (((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);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
if (curi->size == sz_byte)
|
|
printf ("\tsrc &= 7;\n");
|
|
else
|
|
printf ("\tsrc &= 31;\n");
|
|
printf ("\tXSET_ZFLG (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);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
if (curi->size == sz_byte)
|
|
printf ("\tsrc &= 7;\n");
|
|
else
|
|
printf ("\tsrc &= 31;\n");
|
|
printf ("\tXSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
|
|
printf ("\tdst |= (1 << src);\n");
|
|
genastore ("dst", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_CMPM:
|
|
case i_CMP:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
start_brace ();
|
|
genflags (flag_cmp, curi->size, "newv", "src", "dst");
|
|
break;
|
|
case i_CMPA:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
|
|
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);
|
|
|
|
printf ("\tuaecptr memp = xm68k_areg (dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
|
|
if (curi->size == sz_word) {
|
|
printf ("\txput_byte (memp, src >> 8); xput_byte (memp + 2, src);\n");
|
|
} else {
|
|
printf ("\txput_byte (memp, src >> 24); xput_byte (memp + 2, src >> 16);\n");
|
|
printf ("\txput_byte (memp + 4, src >> 8); xput_byte (memp + 6, src);\n");
|
|
}
|
|
break;
|
|
case i_MVPMR:
|
|
printf ("\tuaecptr memp = xm68k_areg (srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
|
|
if (curi->size == sz_word) {
|
|
printf ("\tuae_u16 val = (xget_byte (memp) << 8) + xget_byte (memp + 2);\n");
|
|
} else {
|
|
printf ("\tuae_u32 val = (xget_byte (memp) << 24) + (xget_byte (memp + 2) << 16)\n");
|
|
printf (" + (xget_byte (memp + 4) << 8) + xget_byte (memp + 6);\n");
|
|
}
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_MOVE:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
|
|
genflags (flag_logical, curi->size, "src", "", "");
|
|
genastore ("src", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_MOVEA:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
|
|
if (curi->size == sz_word) {
|
|
printf ("\tuae_u32 val = (uae_s32)(uae_s16)src;\n");
|
|
} else {
|
|
printf ("\tuae_u32 val = src;\n");
|
|
}
|
|
genastore ("val", curi->dmode, "dstreg", sz_long, "dst");
|
|
break;
|
|
case i_SWAP:
|
|
genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
|
|
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);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
|
|
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);
|
|
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:
|
|
genmovemel (opcode);
|
|
break;
|
|
case i_MVMLE:
|
|
genmovemle (opcode);
|
|
break;
|
|
case i_NOP:
|
|
break;
|
|
case i_LINK:
|
|
genamode (Apdi, "7", sz_long, "old", 2, 0);
|
|
genamode (curi->smode, "srcreg", sz_long, "src", 1, 0);
|
|
genastore ("src", Apdi, "7", sz_long, "old");
|
|
genastore ("xm68k_areg (7)", curi->smode, "srcreg", sz_long, "src");
|
|
genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
|
|
printf ("\txm68k_areg (7) += offs;\n");
|
|
break;
|
|
case i_UNLK:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
printf ("\txm68k_areg (7) = src;\n");
|
|
genamode (Aipi, "7", sz_long, "old", 1, 0);
|
|
genastore ("old", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_RTS:
|
|
printf ("\txm68k_setpc (xget_long (xm68k_areg (7)));\n");
|
|
printf ("\txm68k_areg (7) += 4;\n");
|
|
m68k_pc_offset = 0;
|
|
break;
|
|
case i_JSR:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
|
|
printf ("\txm68k_areg (7) -= 4;\n");
|
|
printf ("\txput_long (xm68k_areg (7), xm68k_getpc () + %d);\n", m68k_pc_offset);
|
|
printf ("\txm68k_setpc (srca);\n");
|
|
m68k_pc_offset = 0;
|
|
break;
|
|
case i_JMP:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
|
|
printf ("\txm68k_setpc (srca);\n");
|
|
m68k_pc_offset = 0;
|
|
break;
|
|
case i_BSR:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
printf ("\tuae_s32 s = (uae_s32)src + 2;\n");
|
|
printf ("\txm68k_areg (7) -= 4;\n");
|
|
printf ("\txput_long (xm68k_areg (7), xm68k_getpc () + %d);\n", m68k_pc_offset);
|
|
printf ("\txm68k_incpc(s);\n");
|
|
m68k_pc_offset = 0;
|
|
break;
|
|
case i_Bcc:
|
|
if (curi->size == sz_long) {
|
|
if (next_cpu_level < 1)
|
|
next_cpu_level = 1;
|
|
}
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
printf ("\tif (!xcctrue(%d)) goto didnt_jump;\n", curi->cc);
|
|
printf ("\txm68k_incpc ((uae_s32)src + 2);\n");
|
|
printf ("\treturn;\n");
|
|
printf ("didnt_jump:;\n");
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_LEA:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0);
|
|
genastore ("srca", curi->dmode, "dstreg", curi->size, "dst");
|
|
break;
|
|
case i_PEA:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
|
|
genamode (Apdi, "7", sz_long, "dst", 2, 0);
|
|
genastore ("srca", Apdi, "7", sz_long, "dst");
|
|
break;
|
|
case i_DBcc:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
|
|
printf ("\tif (!xcctrue(%d)) {\n", curi->cc);
|
|
genastore ("(src-1)", curi->smode, "srcreg", curi->size, "src");
|
|
printf ("\t\tif (src) {\n");
|
|
printf ("\t\t\txm68k_incpc((uae_s32)offs + 2);\n");
|
|
printf ("\t\t}\n");
|
|
printf ("\t}\n");
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_Scc:
|
|
genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
|
|
start_brace ();
|
|
printf ("\tint val = xcctrue(%d) ? 0xff : 0;\n", curi->cc);
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "src");
|
|
break;
|
|
case i_DIVU:
|
|
printf ("\tuaecptr oldpc = xm68k_getpc ();\n");
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
|
|
sync_m68k_pc ();
|
|
start_brace ();
|
|
/* Clear V flag when dividing by zero - Alcatraz Odyssey demo depends
|
|
* on this (actually, it's doing a DIVS). */
|
|
printf ("\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
|
|
printf ("\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
|
|
/* The N flag appears to be set each time there is an overflow.
|
|
* Weird. */
|
|
printf ("\tif (newv > 0xffff) { XSET_VFLG (1); XSET_NFLG (1); XSET_CFLG (0); } else\n\t{\n");
|
|
genflags (flag_logical, sz_word, "newv", "", "");
|
|
printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
|
|
genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
printf ("\t}\n");
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_DIVS:
|
|
printf ("\tuaecptr oldpc = xm68k_getpc ();\n");
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
|
|
sync_m68k_pc ();
|
|
start_brace ();
|
|
printf ("\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
|
|
printf ("\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
|
|
printf ("\tif ((newv & 0xffff8000) != 0 && (newv & 0xffff8000) != 0xffff8000) { XSET_VFLG (1); XSET_NFLG (1); XSET_CFLG (0); } else\n\t{\n");
|
|
printf ("\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n");
|
|
genflags (flag_logical, sz_word, "newv", "", "");
|
|
printf ("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
|
|
genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
printf ("\t}\n");
|
|
need_endlabel = 1;
|
|
break;
|
|
case i_MULU:
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n");
|
|
genflags (flag_logical, sz_long, "newv", "", "");
|
|
genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
break;
|
|
case i_MULS:
|
|
genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
|
|
genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0);
|
|
start_brace ();
|
|
printf ("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n");
|
|
genflags (flag_logical, sz_long, "newv", "", "");
|
|
genastore ("newv", curi->dmode, "dstreg", sz_long, "dst");
|
|
break;
|
|
case i_ASR:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
|
|
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 ("\tcnt &= 63;\n");
|
|
printf ("\tXCLEAR_CZNV;\n");
|
|
printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
|
|
printf ("\t\tval = %s & (uae_u32)-sign;\n", bit_mask (curi->size));
|
|
printf ("\t\tXSET_CFLG (sign);\n");
|
|
duplicate_carry ();
|
|
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\tXSET_CFLG (val & 1);\n");
|
|
duplicate_carry ();
|
|
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", "", "");
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ASL:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
|
|
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 ("\tcnt &= 63;\n");
|
|
printf ("\tXCLEAR_CZNV;\n");
|
|
printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
|
|
printf ("\t\tXSET_VFLG (val != 0);\n");
|
|
printf ("\t\tXSET_CFLG (cnt == %d ? val & 1 : 0);\n",
|
|
bit_size (curi->size));
|
|
duplicate_carry ();
|
|
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\tXSET_VFLG ((val & mask) != mask && (val & mask) != 0);\n");
|
|
printf ("\t\tval <<= cnt - 1;\n");
|
|
printf ("\t\tXSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
|
|
duplicate_carry ();
|
|
printf ("\t\tval <<= 1;\n");
|
|
printf ("\t\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\t}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_LSR:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
|
|
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 ("\tcnt &= 63;\n");
|
|
printf ("\tXCLEAR_CZNV;\n");
|
|
printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
|
|
printf ("\t\tXSET_CFLG ((cnt == %d) & (val >> %d));\n",
|
|
bit_size (curi->size), bit_size (curi->size) - 1);
|
|
duplicate_carry ();
|
|
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\tXSET_CFLG (val & 1);\n");
|
|
duplicate_carry ();
|
|
printf ("\t\tval >>= 1;\n");
|
|
printf ("\t}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_LSL:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
|
|
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 ("\tcnt &= 63;\n");
|
|
printf ("\tXCLEAR_CZNV;\n");
|
|
printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
|
|
printf ("\t\tXSET_CFLG (cnt == %d ? val & 1 : 0);\n",
|
|
bit_size (curi->size));
|
|
duplicate_carry ();
|
|
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\tXSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
|
|
duplicate_carry ();
|
|
printf ("\t\tval <<= 1;\n");
|
|
printf ("\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\t}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ROL:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
|
|
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 ("\tcnt &= 63;\n");
|
|
printf ("\tXCLEAR_CZNV;\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 ("\tXSET_CFLG (val & 1);\n");
|
|
printf ("}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ROR:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
|
|
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 ("\tcnt &= 63;\n");
|
|
printf ("\tXCLEAR_CZNV;\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 ("\tXSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1);
|
|
printf ("\t}\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ROXL:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
|
|
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 ("\tcnt &= 63;\n");
|
|
printf ("\tXCLEAR_CZNV;\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) | XGET_XFLG) << cnt) | (loval >> 1);\n");
|
|
printf ("\tXSET_XFLG (carry);\n");
|
|
printf ("\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\t} }\n");
|
|
printf ("\tXSET_CFLG (XGET_XFLG);\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ROXR:
|
|
genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0);
|
|
genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0);
|
|
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 ("\tcnt &= 63;\n");
|
|
printf ("\tXCLEAR_CZNV;\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) | XGET_XFLG;\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 ("\tXSET_XFLG (carry);\n");
|
|
printf ("\tval &= %s;\n", bit_mask (curi->size));
|
|
printf ("\t} }\n");
|
|
printf ("\tXSET_CFLG (XGET_XFLG);\n");
|
|
genflags (flag_logical_noclobber, curi->size, "val", "", "");
|
|
genastore ("val", curi->dmode, "dstreg", curi->size, "data");
|
|
break;
|
|
case i_ASRW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
|
|
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 ("\tXSET_CFLG (cflg);\n");
|
|
duplicate_carry ();
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_ASLW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
|
|
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 ("\tXSET_CFLG (sign != 0);\n");
|
|
duplicate_carry ();
|
|
|
|
printf ("\tXSET_VFLG (XGET_VFLG | (sign2 != sign));\n");
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_LSRW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
|
|
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 ("XSET_CFLG (carry);\n");
|
|
duplicate_carry ();
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_LSLW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
|
|
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 ("XSET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
|
|
duplicate_carry ();
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_ROLW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
|
|
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 ("XSET_CFLG (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);
|
|
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 ("XSET_CFLG (carry);\n");
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_ROXLW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
|
|
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 (XGET_XFLG) val |= 1;\n");
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("XSET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1);
|
|
duplicate_carry ();
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
case i_ROXRW:
|
|
genamode (curi->smode, "srcreg", curi->size, "data", 1, 0);
|
|
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 (XGET_XFLG) val |= %s;\n", cmask (curi->size));
|
|
genflags (flag_logical, curi->size, "val", "", "");
|
|
printf ("XSET_CFLG (carry);\n");
|
|
duplicate_carry ();
|
|
genastore ("val", curi->smode, "srcreg", curi->size, "data");
|
|
break;
|
|
default:
|
|
m68k_pc_offset = 0;
|
|
break;
|
|
}
|
|
finish_braces ();
|
|
sync_m68k_pc ();
|
|
}
|
|
|
|
static int postfix;
|
|
|
|
static void generate_one_opcode (int rp)
|
|
{
|
|
int i;
|
|
uae_u16 smsk, dmsk;
|
|
long int opcode = opcode_map[rp];
|
|
|
|
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, "{ xop_%lx_%d, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp],
|
|
opcode, lookuptab[i].name);
|
|
return;
|
|
}
|
|
fprintf (stblfile, "{ xop_%lx_%d, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name);
|
|
fprintf (headerfile, "extern xcpuop_func xop_%lx_%d;\n", opcode, postfix);
|
|
printf ("void xop_%lx_%d(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name);
|
|
|
|
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 = ximm8_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 0
|
|
/* Check that we can do the little endian optimization safely. */
|
|
if (pos < 8 && (dmsk >> (8 - pos)) != 0)
|
|
abort ();
|
|
#endif
|
|
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);
|
|
printf ("}\n");
|
|
opcode_next_clev[rp] = next_cpu_level;
|
|
opcode_last_postfix[rp] = postfix;
|
|
}
|
|
|
|
static void generate_func (void)
|
|
{
|
|
int i, j, rp;
|
|
|
|
using_prefetch = 0;
|
|
using_exception_3 = 0;
|
|
for (i = 0; i <= 0; i++) {
|
|
cpu_level = 5;
|
|
|
|
postfix = i;
|
|
fprintf (stblfile, "struct xcputbl xop_smalltbl_%d[] = {\n", postfix);
|
|
|
|
rp = 0;
|
|
for(j=1;j<=8;++j) {
|
|
int k = (j*nr_cpuop_funcs)/8;
|
|
for (; rp < k; rp++)
|
|
generate_one_opcode (rp);
|
|
}
|
|
|
|
fprintf (stblfile, "{ 0, 0 }};\n");
|
|
}
|
|
|
|
}
|
|
|
|
static void generate_includes (FILE * f)
|
|
{
|
|
fprintf (f, "#include \"cpu_small.h\"\n");
|
|
fprintf (f, "#include \"cputbl_small.h\"\n");
|
|
}
|
|
|
|
int main (int argc, char **argv)
|
|
{
|
|
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_small.h", "wb");
|
|
stblfile = fopen ("cpustbl_small.c", "wb");
|
|
generate_includes (stblfile);
|
|
freopen ("cpuemu_small.c", "wb", stdout);
|
|
generate_includes (stdout);
|
|
|
|
generate_func ();
|
|
|
|
free (table68k);
|
|
return 0;
|
|
}
|