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- /*
- * UAE - The Un*x Amiga Emulator
- *
- * MC68000 emulation generator
- *
- * This is a fairly stupid program that generates a lot of case labels that
- * can be #included in a switch statement.
- * As an alternative, it can generate functions that handle specific
- * MC68000 instructions, plus a prototype header file and a function pointer
- * array to look up the function for an opcode.
- * Error checking is bad, an illegal table68k file will cause the program to
- * call abort().
- * The generated code is sometimes sub-optimal, an optimizing compiler should
- * take care of this.
- *
- * Copyright 1995, 1996 Bernd Schmidt
- */
-
- #include <ctype.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- #include "sysdeps.h"
- #include "readcpu.h"
-
- #if defined(SPARC_V8_ASSEMBLY) || defined(SPARC_V9_ASSEMBLY)
- #define SPARC_ASSEMBLY 0
- #endif
-
- #define BOOL_TYPE "int"
-
- static FILE *headerfile;
- static FILE *stblfile;
-
- static int using_prefetch;
- static int using_exception_3;
- static int cpu_level;
-
- /* For the current opcode, the next lower level that will have different code.
- * Initialized to -1 for each opcode. If it remains unchanged, indicates we
- * are done with that opcode. */
- static int next_cpu_level;
-
- static int *opcode_map;
- static int *opcode_next_clev;
- static int *opcode_last_postfix;
- static unsigned long *counts;
-
- static void read_counts (void)
- {
- FILE *file;
- unsigned long opcode, count, total;
- char name[20];
- int nr = 0;
- memset (counts, 0, 65536 * sizeof *counts);
-
- file = fopen ("frequent.68k", "r");
- if (file) {
- fscanf (file, "Total: %lu\n", &total);
- while (fscanf (file, "%lx: %lu %s\n", &opcode, &count, name) == 3) {
- opcode_next_clev[nr] = 4;
- opcode_last_postfix[nr] = -1;
- opcode_map[nr++] = opcode;
- counts[opcode] = count;
- }
- fclose (file);
- }
- if (nr == nr_cpuop_funcs)
- return;
- for (opcode = 0; opcode < 0x10000; opcode++) {
- if (table68k[opcode].handler == -1 && table68k[opcode].mnemo != i_ILLG
- && counts[opcode] == 0)
- {
- opcode_next_clev[nr] = 4;
- opcode_last_postfix[nr] = -1;
- opcode_map[nr++] = opcode;
- counts[opcode] = count;
- }
- }
- if (nr != nr_cpuop_funcs)
- abort ();
- }
-
- static char endlabelstr[80];
- static int endlabelno = 0;
- static int need_endlabel;
-
- static int n_braces = 0;
- static int m68k_pc_offset = 0;
- static int insn_n_cycles;
-
- static void start_brace (void)
- {
- n_braces++;
- printf ("{");
- }
-
- static void close_brace (void)
- {
- assert (n_braces > 0);
- n_braces--;
- printf ("}");
- }
-
- static void finish_braces (void)
- {
- while (n_braces > 0)
- close_brace ();
- }
-
- static void pop_braces (int to)
- {
- while (n_braces > to)
- close_brace ();
- }
-
- static int bit_size (int size)
- {
- switch (size) {
- case sz_byte: return 8;
- case sz_word: return 16;
- case sz_long: return 32;
- default: abort ();
- }
- return 0;
- }
-
- static const char *bit_mask (int size)
- {
- switch (size) {
- case sz_byte: return "0xff";
- case sz_word: return "0xffff";
- case sz_long: return "0xffffffff";
- default: abort ();
- }
- return 0;
- }
-
- static const char *gen_nextilong (void)
- {
- static char buffer[80];
- int r = m68k_pc_offset;
- m68k_pc_offset += 4;
-
- insn_n_cycles += 4;
-
- if (using_prefetch)
- sprintf (buffer, "get_ilong_prefetch(%d)", r);
- else
- sprintf (buffer, "get_ilong(%d)", r);
- return buffer;
- }
-
- static const char *gen_nextiword (void)
- {
- static char buffer[80];
- int r = m68k_pc_offset;
- m68k_pc_offset += 2;
-
- insn_n_cycles += 2;
-
- if (using_prefetch)
- sprintf (buffer, "get_iword_prefetch(%d)", r);
- else
- sprintf (buffer, "get_iword(%d)", r);
- return buffer;
- }
-
- static const char *gen_nextibyte (void)
- {
- static char buffer[80];
- int r = m68k_pc_offset;
- m68k_pc_offset += 2;
-
- insn_n_cycles += 2;
-
- if (using_prefetch)
- sprintf (buffer, "get_ibyte_prefetch(%d)", r);
- else
- sprintf (buffer, "get_ibyte(%d)", r);
- return buffer;
- }
-
- static void fill_prefetch_0 (void)
- {
- if (using_prefetch)
- printf ("fill_prefetch_0 ();\n");
- }
-
- static void fill_prefetch_2 (void)
- {
- if (using_prefetch)
- printf ("fill_prefetch_2 ();\n");
- }
-
- static void swap_opcode (void)
- {
- printf ("#ifdef HAVE_GET_WORD_UNSWAPPED\n");
- printf ("\topcode = ((opcode << 8) & 0xFF00) | ((opcode >> 8) & 0xFF);\n");
- printf ("#endif\n");
- }
-
- static void sync_m68k_pc (void)
- {
- if (m68k_pc_offset == 0)
- return;
- printf ("m68k_incpc(%d);\n", m68k_pc_offset);
- switch (m68k_pc_offset) {
- case 0:
- /*fprintf (stderr, "refilling prefetch at 0\n"); */
- break;
- case 2:
- fill_prefetch_2 ();
- break;
- default:
- fill_prefetch_0 ();
- break;
- }
- m68k_pc_offset = 0;
- }
-
- /* getv == 1: fetch data; getv != 0: check for odd address. If movem != 0,
- * the calling routine handles Apdi and Aipi modes.
- * gb-- movem == 2 means the same thing but for a MOVE16 instruction */
- static void genamode (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem)
- {
- start_brace ();
- switch (mode) {
- case Dreg:
- if (movem)
- abort ();
- if (getv == 1)
- switch (size) {
- case sz_byte:
- #if defined(AMIGA) && !defined(WARPUP)
- /* sam: I don't know why gcc.2.7.2.1 produces a code worse */
- /* if it is not done like that: */
- printf ("\tuae_s8 %s = ((uae_u8*)&m68k_dreg(regs, %s))[3];\n", name, reg);
- #else
- printf ("\tuae_s8 %s = m68k_dreg(regs, %s);\n", name, reg);
- #endif
- break;
- case sz_word:
- #if defined(AMIGA) && !defined(WARPUP)
- printf ("\tuae_s16 %s = ((uae_s16*)&m68k_dreg(regs, %s))[1];\n", name, reg);
- #else
- printf ("\tuae_s16 %s = m68k_dreg(regs, %s);\n", name, reg);
- #endif
- break;
- case sz_long:
- printf ("\tuae_s32 %s = m68k_dreg(regs, %s);\n", name, reg);
- break;
- default:
- abort ();
- }
- return;
- case Areg:
- if (movem)
- abort ();
- if (getv == 1)
- switch (size) {
- case sz_word:
- printf ("\tuae_s16 %s = m68k_areg(regs, %s);\n", name, reg);
- break;
- case sz_long:
- printf ("\tuae_s32 %s = m68k_areg(regs, %s);\n", name, reg);
- break;
- default:
- abort ();
- }
- return;
- case Aind:
- printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
- break;
- case Aipi:
- printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
- break;
- case Apdi:
- switch (size) {
- case sz_byte:
- if (movem)
- printf ("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
- else
- printf ("\tuaecptr %sa = m68k_areg(regs, %s) - areg_byteinc[%s];\n", name, reg, reg);
- break;
- case sz_word:
- printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 2);
- break;
- case sz_long:
- printf ("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 4);
- break;
- default:
- abort ();
- }
- break;
- case Ad16:
- printf ("\tuaecptr %sa = m68k_areg(regs, %s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword ());
- break;
- case Ad8r:
- if (cpu_level > 1) {
- if (next_cpu_level < 1)
- next_cpu_level = 1;
- sync_m68k_pc ();
- start_brace ();
- printf ("\tuaecptr %sa = get_disp_ea_020(m68k_areg(regs, %s), next_iword());\n", name, reg);
- } else
- printf ("\tuaecptr %sa = get_disp_ea_000(m68k_areg(regs, %s), %s);\n", name, reg, gen_nextiword ());
-
- break;
- case PC16:
- printf ("\tuaecptr %sa = m68k_getpc () + %d;\n", name, m68k_pc_offset);
- printf ("\t%sa += (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
- break;
- case PC8r:
- if (cpu_level > 1) {
- if (next_cpu_level < 1)
- next_cpu_level = 1;
- sync_m68k_pc ();
- start_brace ();
- printf ("\tuaecptr tmppc = m68k_getpc();\n");
- printf ("\tuaecptr %sa = get_disp_ea_020(tmppc, next_iword());\n", name);
- } else {
- printf ("\tuaecptr tmppc = m68k_getpc() + %d;\n", m68k_pc_offset);
- printf ("\tuaecptr %sa = get_disp_ea_000(tmppc, %s);\n", name, gen_nextiword ());
- }
-
- break;
- case absw:
- printf ("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword ());
- break;
- case absl:
- printf ("\tuaecptr %sa = %s;\n", name, gen_nextilong ());
- break;
- case imm:
- if (getv != 1)
- abort ();
- switch (size) {
- case sz_byte:
- printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
- break;
- case sz_word:
- printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
- break;
- case sz_long:
- printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
- break;
- default:
- abort ();
- }
- return;
- case imm0:
- if (getv != 1)
- abort ();
- printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte ());
- return;
- case imm1:
- if (getv != 1)
- abort ();
- printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword ());
- return;
- case imm2:
- if (getv != 1)
- abort ();
- printf ("\tuae_s32 %s = %s;\n", name, gen_nextilong ());
- 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_exception_3 && getv != 0 && size != sz_byte) {
- printf ("\tif ((%sa & 1) != 0) {\n", name);
- printf ("\t\tlast_fault_for_exception_3 = %sa;\n", name);
- printf ("\t\tlast_op_for_exception_3 = opcode;\n");
- printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + %d;\n", m68k_pc_offset);
- printf ("\t\tException(3, 0);\n");
- printf ("\t\tgoto %s;\n", endlabelstr);
- printf ("\t}\n");
- need_endlabel = 1;
- start_brace ();
- }
-
- if (getv == 1) {
- switch (size) {
- case sz_byte: insn_n_cycles += 2; break;
- case sz_word: insn_n_cycles += 2; break;
- case sz_long: insn_n_cycles += 4; break;
- default: abort ();
- }
- start_brace ();
- switch (size) {
- case sz_byte: printf ("\tuae_s8 %s = get_byte(%sa);\n", name, name); break;
- case sz_word: printf ("\tuae_s16 %s = get_word(%sa);\n", name, name); break;
- case sz_long: 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 genastore (char *from, amodes mode, char *reg, wordsizes size, char *to)
- {
- switch (mode) {
- case Dreg:
- switch (size) {
- case sz_byte:
- printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xff) | ((%s) & 0xff);\n", reg, reg, from);
- break;
- case sz_word:
- printf ("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xffff) | ((%s) & 0xffff);\n", reg, reg, from);
- break;
- case sz_long:
- printf ("\tm68k_dreg(regs, %s) = (%s);\n", reg, from);
- break;
- default:
- abort ();
- }
- break;
- case Areg:
- switch (size) {
- case sz_word:
- fprintf (stderr, "Foo\n");
- 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_prefetch)
- sync_m68k_pc ();
- switch (size) {
- case sz_byte:
- insn_n_cycles += 2;
- printf ("\tput_byte(%sa,%s);\n", to, from);
- break;
- case sz_word:
- insn_n_cycles += 2;
- if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
- abort ();
- printf ("\tput_word(%sa,%s);\n", to, from);
- break;
- case sz_long:
- insn_n_cycles += 4;
- 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 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 ());
- printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
- genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
- 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 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 ());
- genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
- 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 duplicate_carry (void)
- {
- printf ("\tCOPY_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 ("\tCLEAR_CZNV;\n");
- printf ("\tSET_ZFLG (%s == 0);\n", vstr);
- printf ("\tSET_NFLG (%s < 0);\n", vstr);
- break;
- case flag_logical_noclobber:
- printf ("\tSET_ZFLG (%s == 0);\n", vstr);
- printf ("\tSET_NFLG (%s < 0);\n", vstr);
- break;
- case flag_av:
- printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
- break;
- case flag_sv:
- printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
- break;
- case flag_zn:
- printf ("\tSET_ZFLG (GET_ZFLG & (%s == 0));\n", vstr);
- printf ("\tSET_NFLG (%s < 0);\n", vstr);
- break;
- case flag_add:
- printf ("\tSET_ZFLG (%s == 0);\n", vstr);
- printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
- printf ("\tSET_CFLG (%s < %s);\n", undstr, usstr);
- duplicate_carry ();
- printf ("\tSET_NFLG (flgn != 0);\n");
- break;
- case flag_sub:
- printf ("\tSET_ZFLG (%s == 0);\n", vstr);
- printf ("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
- printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
- duplicate_carry ();
- printf ("\tSET_NFLG (flgn != 0);\n");
- break;
- case flag_addx:
- printf ("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n"); /* minterm SON: 0x42 */
- printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgo) & (flgo ^ flgn)));\n"); /* minterm SON: 0xD4 */
- duplicate_carry ();
- break;
- case flag_subx:
- printf ("\tSET_VFLG ((flgs ^ flgo) & (flgo ^ flgn));\n"); /* minterm SON: 0x24 */
- printf ("\tSET_CFLG (flgs ^ ((flgs ^ flgn) & (flgo ^ flgn)));\n"); /* minterm SON: 0xB2 */
- duplicate_carry ();
- break;
- case flag_cmp:
- printf ("\tSET_ZFLG (%s == 0);\n", vstr);
- printf ("\tSET_VFLG ((flgs != flgo) && (flgn != flgo));\n");
- printf ("\tSET_CFLG (%s > %s);\n", usstr, udstr);
- printf ("\tSET_NFLG (flgn != 0);\n");
- break;
- }
- }
-
- static void genflags (flagtypes type, wordsizes size, char *value, char *src, char *dst)
- {
- #ifdef SPARC_V8_ASSEMBLY
- switch(type)
- {
- case flag_add:
- start_brace();
- printf("\tuae_u32 %s;\n", value);
- switch(size)
- {
- case sz_byte:
- printf("\t%s = sparc_v8_flag_add_8(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- case sz_word:
- printf("\t%s = sparc_v8_flag_add_16(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- case sz_long:
- printf("\t%s = sparc_v8_flag_add_32(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- }
- return;
-
- case flag_sub:
- start_brace();
- printf("\tuae_u32 %s;\n", value);
- switch(size)
- {
- case sz_byte:
- printf("\t%s = sparc_v8_flag_sub_8(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- case sz_word:
- printf("\t%s = sparc_v8_flag_sub_16(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- case sz_long:
- printf("\t%s = sparc_v8_flag_sub_32(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- }
- return;
-
- case flag_cmp:
- switch(size)
- {
- case sz_byte:
- // printf("\tsparc_v8_flag_cmp_8(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
- break;
- case sz_word:
- // printf("\tsparc_v8_flag_cmp_16(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
- break;
- case sz_long:
- #if 1
- printf("\tsparc_v8_flag_cmp_32(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
- return;
- #endif
- break;
- }
- // return;
- break;
- }
- #elif defined(SPARC_V9_ASSEMBLY)
- switch(type)
- {
- case flag_add:
- start_brace();
- printf("\tuae_u32 %s;\n", value);
- switch(size)
- {
- case sz_byte:
- printf("\t%s = sparc_v9_flag_add_8(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- case sz_word:
- printf("\t%s = sparc_v9_flag_add_16(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- case sz_long:
- printf("\t%s = sparc_v9_flag_add_32(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- }
- return;
-
- case flag_sub:
- start_brace();
- printf("\tuae_u32 %s;\n", value);
- switch(size)
- {
- case sz_byte:
- printf("\t%s = sparc_v9_flag_sub_8(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- case sz_word:
- printf("\t%s = sparc_v9_flag_sub_16(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- case sz_long:
- printf("\t%s = sparc_v9_flag_sub_32(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", value, src, dst);
- break;
- }
- return;
-
- case flag_cmp:
- switch(size)
- {
- case sz_byte:
- printf("\tsparc_v9_flag_cmp_8(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
- break;
- case sz_word:
- printf("\tsparc_v9_flag_cmp_16(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
- break;
- case sz_long:
- printf("\tsparc_v9_flag_cmp_32(®flags, (uae_u32)(%s), (uae_u32)(%s));\n", src, dst);
- break;
- }
- return;
-
- case flag_logical:
- if (strcmp(value, "0") == 0) {
- printf("\tregflags.nzvc = 0x04;\n");
- } else {
- switch(size) {
- case sz_byte:
- printf("\tsparc_v9_flag_test_8(®flags, (uae_u32)(%s));\n", value);
- break;
- case sz_word:
- printf("\tsparc_v9_flag_test_16(®flags, (uae_u32)(%s));\n", value);
- break;
- case sz_long:
- printf("\tsparc_v9_flag_test_32(®flags, (uae_u32)(%s));\n", value);
- break;
- }
- }
- return;
-
- #if 0
- case flag_logical_noclobber:
- printf("\t{uae_u32 old_flags = regflags.nzvc & ~0x0C;\n");
- if (strcmp(value, "0") == 0) {
- printf("\tregflags.nzvc = old_flags | 0x04;\n");
- } else {
- switch(size) {
- case sz_byte:
- printf("\tsparc_v9_flag_test_8(®flags, (uae_u32)(%s));\n", value);
- break;
- case sz_word:
- printf("\tsparc_v9_flag_test_16(®flags, (uae_u32)(%s));\n", value);
- break;
- case sz_long:
- printf("\tsparc_v9_flag_test_32(®flags, (uae_u32)(%s));\n", value);
- break;
- }
- printf("\tregflags.nzvc |= old_flags;\n");
- }
- printf("\t}\n");
- return;
- #endif
- }
- #elif defined(X86_ASSEMBLY)
- 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 = regflags.cznv & ~0xC0;\n");
- if (strcmp (value, "0") == 0) {
- printf ("\tregflags.cznv = olcznv | 64;\n");
- } else {
- switch (size) {
- case sz_byte: printf ("\tx86_flag_testb ((uae_s8)(%s));\n", value); break;
- case sz_word: printf ("\tx86_flag_testw ((uae_s16)(%s));\n", value); break;
- case sz_long: printf ("\tx86_flag_testl ((uae_s32)(%s));\n", value); break;
- }
- printf ("\tregflags.cznv |= oldcznv;\n");
- }
- printf ("\t}\n");
- return;
- case flag_logical:
- if (strcmp (value, "0") == 0) {
- printf ("\tregflags.cznv = 64;\n");
- } else {
- switch (size) {
- case sz_byte: printf ("\tx86_flag_testb ((uae_s8)(%s));\n", value); break;
- case sz_word: printf ("\tx86_flag_testw ((uae_s16)(%s));\n", value); break;
- case sz_long: printf ("\tx86_flag_testl ((uae_s32)(%s));\n", value); break;
- }
- }
- return;
-
- case flag_add:
- switch (size) {
- case sz_byte: printf ("\tx86_flag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
- case sz_word: printf ("\tx86_flag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
- case sz_long: printf ("\tx86_flag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
- }
- return;
-
- case flag_sub:
- switch (size) {
- case sz_byte: printf ("\tx86_flag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break;
- case sz_word: printf ("\tx86_flag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break;
- case sz_long: printf ("\tx86_flag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break;
- }
- return;
-
- case flag_cmp:
- switch (size) {
- case sz_byte: printf ("\tx86_flag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break;
- case sz_word: printf ("\tx86_flag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break;
- case sz_long: printf ("\tx86_flag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break;
- }
- return;
-
- default:
- break;
- }
- #elif defined(M68K_FLAG_OPT)
- /* sam: here I'm cloning what X86_ASSEMBLY does */
- #define EXT(size) (size==sz_byte?"b":(size==sz_word?"w":"l"))
- #define CAST(size) (size==sz_byte?"uae_s8":(size==sz_word?"uae_s16":"uae_s32"))
- switch (type) {
- case flag_add:
- case flag_sub:
- start_brace ();
- printf ("\tuae_u32 %s;\n", value);
- break;
-
- default:
- break;
- }
-
- switch (type) {
- case flag_logical:
- if (strcmp (value, "0") == 0) {
- printf ("\t*(uae_u16 *)®flags = 4;\n"); /* Z = 1 */
- } else {
- printf ("\tm68k_flag_tst (%s, (%s)(%s));\n",
- EXT (size), CAST (size), value);
- }
- return;
-
- case flag_add:
- printf ("\t{uae_u16 ccr;\n");
- printf ("\tm68k_flag_add (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
- EXT (size), CAST (size), value, CAST (size), src, CAST (size), dst);
- printf ("\t((uae_u16*)®flags)[1]=((uae_u16*)®flags)[0]=ccr;}\n");
- return;
-
- case flag_sub:
- printf ("\t{uae_u16 ccr;\n");
- printf ("\tm68k_flag_sub (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
- EXT (size), CAST (size), value, CAST (size), src, CAST (size), dst);
- printf ("\t((uae_u16*)®flags)[1]=((uae_u16*)®flags)[0]=ccr;}\n");
- return;
-
- case flag_cmp:
- printf ("\tm68k_flag_cmp (%s, (%s)(%s), (%s)(%s));\n",
- EXT (size), CAST (size), src, CAST (size), dst);
- return;
-
- default:
- break;
- }
- #elif defined(ACORN_FLAG_OPT) && defined(__GNUC_MINOR__)
- /*
- * This is new. Might be quite buggy.
- */
- switch (type) {
- case flag_av:
- case flag_sv:
- case flag_zn:
- case flag_addx:
- case flag_subx:
- break;
-
- case flag_logical:
- if (strcmp (value, "0") == 0) {
- /* v=c=n=0 z=1 */
- printf ("\t*(ULONG*)®flags = 0x40000000;\n");
- return;
- } else {
- start_brace ();
- switch (size) {
- case sz_byte:
- printf ("\tUBYTE ccr;\n");
- printf ("\tULONG shift;\n");
- printf ("\t__asm__(\"mov %%2,%%1,lsl#24\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
- "\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value);
- printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
- return;
- case sz_word:
- printf ("\tUBYTE ccr;\n");
- printf ("\tULONG shift;\n");
- printf ("\t__asm__(\"mov %%2,%%1,lsl#16\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
- "\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value);
- printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
- return;
- case sz_long:
- printf ("\tUBYTE ccr;\n");
- printf ("\t__asm__(\"tst %%1,%%1\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
- "\t: \"=r\" (ccr) : \"r\" ((LONG)%s) : \"cc\" );\n", value);
- printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
- return;
- }
- }
- break;
- case flag_add:
- if (strcmp (dst, "0") == 0) {
- printf ("/* Error! Hier muss Peter noch was machen !!! (ADD-Flags) */");
- } else {
- start_brace ();
- switch (size) {
- case sz_byte:
- printf ("\tULONG ccr, shift, %s;\n", value);
- printf ("\t__asm__(\"mov %%4,%%3,lsl#24\n\tadds %%0,%%4,%%2,lsl#24\n\tmov %%0,%%0,asr#24\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
- "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
- printf ("\t*(ULONG*)®flags = ccr;\n");
- return;
- case sz_word:
- printf ("\tULONG ccr, shift, %s;\n", value);
- printf ("\t__asm__(\"mov %%4,%%3,lsl#16\n\tadds %%0,%%4,%%2,lsl#16\n\tmov %%0,%%0,asr#16\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
- "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
- printf ("\t*(ULONG*)®flags = ccr;\n");
- return;
- case sz_long:
- printf ("\tULONG ccr, %s;\n", value);
- printf ("\t__asm__(\"adds %%0,%%3,%%2\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
- "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
- printf ("\t*(ULONG*)®flags = ccr;\n");
- return;
- }
- }
- break;
- case flag_sub:
- if (strcmp (dst, "0") == 0) {
- printf ("/* Error! Hier muss Peter noch was machen !!! (SUB-Flags) */");
- } else {
- start_brace ();
- switch (size) {
- case sz_byte:
- printf ("\tULONG ccr, shift, %s;\n", value);
- printf ("\t__asm__(\"mov %%4,%%3,lsl#24\n\tsubs %%0,%%4,%%2,lsl#24\n\tmov %%0,%%0,asr#24\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
- "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
- printf ("\t*(ULONG*)®flags = ccr;\n");
- return;
- case sz_word:
- printf ("\tULONG ccr, shift, %s;\n", value);
- printf ("\t__asm__(\"mov %%4,%%3,lsl#16\n\tsubs %%0,%%4,%%2,lsl#16\n\tmov %%0,%%0,asr#16\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
- "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
- printf ("\t*(ULONG*)®flags = ccr;\n");
- return;
- case sz_long:
- printf ("\tULONG ccr, %s;\n", value);
- printf ("\t__asm__(\"subs %%0,%%3,%%2\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
- "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
- printf ("\t*(ULONG*)®flags = ccr;\n");
- return;
- }
- }
- break;
- case flag_cmp:
- if (strcmp (dst, "0") == 0) {
- printf ("/*Error! Hier muss Peter noch was machen !!! (CMP-Flags)*/");
- } else {
- start_brace ();
- switch (size) {
- case sz_byte:
- printf ("\tULONG shift, ccr;\n");
- printf ("\t__asm__(\"mov %%3,%%2,lsl#24\n\tcmp %%3,%%1,lsl#24\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
- "\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", src, dst);
- printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
- return;
- case sz_word:
- printf ("\tULONG shift, ccr;\n");
- printf ("\t__asm__(\"mov %%3,%%2,lsl#16\n\tcmp %%3,%%1,lsl#16\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
- "\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", src, dst);
- printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
- return;
- case sz_long:
- printf ("\tULONG ccr;\n");
- printf ("\t__asm__(\"cmp %%2,%%1\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
- "\t: \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", src, dst);
- printf ("\t*((UBYTE*)®flags+3) = ccr;\n");
- /*printf ("\tprintf (\"%%08x %%08x %%08x\\n\", %s, %s, *((ULONG*)®flags));\n", src, dst); */
- return;
- }
- }
- 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;
- insn_n_cycles = 2;
-
- start_brace ();
- #if 0
- printf ("uae_u8 *m68k_pc = regs.pc_p;\n");
- #endif
- 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(8,0); 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(8,0); 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);
- 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_ORSR:
- case i_EORSR:
- printf ("\tMakeSR();\n");
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- if (curi->size == sz_byte) {
- printf ("\tsrc &= 0xFF;\n");
- }
- printf ("\tregs.sr %c= src;\n", curi->mnemo == i_EORSR ? '^' : '|');
- printf ("\tMakeFromSR();\n");
- break;
- case i_ANDSR:
- printf ("\tMakeSR();\n");
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- if (curi->size == sz_byte) {
- printf ("\tsrc |= 0xFF00;\n");
- }
- printf ("\tregs.sr &= src;\n");
- printf ("\tMakeFromSR();\n");
- 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 - (GET_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:
- /* Let's hope this works... */
- 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) - (GET_XFLG ? 1 : 0);\n");
- printf ("\tuae_u16 newv_hi = (dst & 0xF0) - (src & 0xF0);\n");
- printf ("\tuae_u16 newv;\n");
- printf ("\tint cflg;\n");
- printf ("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
- printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
- printf ("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
- duplicate_carry ();
- printf ("\tif (cflg) newv -= 0x60;\n");
- genflags (flag_zn, curi->size, "newv", "", "");
- genflags (flag_sv, curi->size, "newv", "src", "dst");
- 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 + (GET_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) + (GET_XFLG ? 1 : 0);\n");
- printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 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 ("\tSET_CFLG (cflg = (newv & 0x1F0) > 0x90);\n");
- duplicate_carry ();
- printf ("\tif (cflg) newv += 0x60;\n");
- genflags (flag_zn, curi->size, "newv", "", "");
- genflags (flag_sv, curi->size, "newv", "src", "dst");
- 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 - (GET_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) - (GET_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; newv_hi-=0x10; }\n");
- printf ("\tnewv = newv_hi + (newv_lo & 0xF);");
- printf ("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
- duplicate_carry();
- printf ("\tif (cflg) newv -= 0x60;\n");
- 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 ("\tSET_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 ("\tSET_ZFLG ((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 ("\tSET_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 ("\tSET_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 = m68k_areg(regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword ());
- 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");
- }
- break;
- case i_MVPMR:
- printf ("\tuaecptr memp = m68k_areg(regs, 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 = (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");
- }
- 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_MVSR2:
- genamode (curi->smode, "srcreg", sz_word, "src", 2, 0);
- printf ("\tMakeSR();\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);
- if (curi->size == sz_byte)
- printf ("\tMakeSR();\n\tregs.sr &= 0xFF00;\n\tregs.sr |= src & 0xFF;\n");
- else {
- printf ("\tregs.sr = src;\n");
- }
- printf ("\tMakeFromSR();\n");
- 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_TRAP:
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- sync_m68k_pc ();
- printf ("\tException(src+32,0);\n");
- m68k_pc_offset = 0;
- break;
- case i_MVR2USP:
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- printf ("\tregs.usp = src;\n");
- break;
- case i_MVUSP2R:
- genamode (curi->smode, "srcreg", curi->size, "src", 2, 0);
- genastore ("regs.usp", curi->smode, "srcreg", curi->size, "src");
- break;
- case i_RESET:
- break;
- case i_NOP:
- break;
- case i_STOP:
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- printf ("\tregs.sr = src;\n");
- printf ("\tMakeFromSR();\n");
- printf ("\tm68k_setstopped(1);\n");
- break;
- case i_RTE:
- if (cpu_level == 0) {
- genamode (Aipi, "7", sz_word, "sr", 1, 0);
- genamode (Aipi, "7", sz_long, "pc", 1, 0);
- printf ("\tregs.sr = sr; m68k_setpc_rte(pc);\n");
- fill_prefetch_0 ();
- printf ("\tMakeFromSR();\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);
- genamode (Aipi, "7", sz_long, "pc", 1, 0);
- genamode (Aipi, "7", sz_word, "format", 1, 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) == 0x3000) { m68k_areg(regs, 7) += 4; break; }\n");
- printf ("\telse if ((format & 0xF000) == 0x7000) { m68k_areg(regs, 7) += 52; break; }\n");
- printf ("\telse if ((format & 0xF000) == 0x8000) { m68k_areg(regs, 7) += 50; 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(14,0); goto %s; }\n", endlabelstr);
- printf ("\tregs.sr = newsr; MakeFromSR();\n}\n");
- pop_braces (old_brace_level);
- printf ("\tregs.sr = newsr; MakeFromSR();\n");
- printf ("\tm68k_setpc_rte(newpc);\n");
- fill_prefetch_0 ();
- need_endlabel = 1;
- }
- /* PC is set and prefetch filled. */
- m68k_pc_offset = 0;
- break;
- case i_RTD:
- genamode (Aipi, "7", sz_long, "pc", 1, 0);
- genamode (curi->smode, "srcreg", curi->size, "offs", 1, 0);
- printf ("\tm68k_areg(regs, 7) += offs;\n");
- printf ("\tm68k_setpc_rte(pc);\n");
- fill_prefetch_0 ();
- /* PC is set and prefetch filled. */
- m68k_pc_offset = 0;
- 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 ("m68k_areg(regs, 7)", curi->smode, "srcreg", sz_long, "src");
- genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0);
- printf ("\tm68k_areg(regs, 7) += offs;\n");
- break;
- case i_UNLK:
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- printf ("\tm68k_areg(regs, 7) = src;\n");
- genamode (Aipi, "7", sz_long, "old", 1, 0);
- genastore ("old", curi->smode, "srcreg", curi->size, "src");
- break;
- case i_RTS:
- printf ("\tm68k_do_rts();\n");
- fill_prefetch_0 ();
- m68k_pc_offset = 0;
- break;
- case i_TRAPV:
- sync_m68k_pc ();
- printf ("\tif (GET_VFLG) { Exception(7,m68k_getpc()); goto %s; }\n", endlabelstr);
- need_endlabel = 1;
- break;
- case i_RTR:
- printf ("\tMakeSR();\n");
- genamode (Aipi, "7", sz_word, "sr", 1, 0);
- genamode (Aipi, "7", sz_long, "pc", 1, 0);
- printf ("\tregs.sr &= 0xFF00; sr &= 0xFF;\n");
- printf ("\tregs.sr |= sr; m68k_setpc(pc);\n");
- fill_prefetch_0 ();
- printf ("\tMakeFromSR();\n");
- m68k_pc_offset = 0;
- break;
- case i_JSR:
- genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
- printf ("\tm68k_do_jsr(m68k_getpc() + %d, srca);\n", m68k_pc_offset);
- fill_prefetch_0 ();
- m68k_pc_offset = 0;
- break;
- case i_JMP:
- genamode (curi->smode, "srcreg", curi->size, "src", 0, 0);
- printf ("\tm68k_setpc(srca);\n");
- fill_prefetch_0 ();
- 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");
- if (using_exception_3) {
- printf ("\tif (src & 1) {\n");
- printf ("\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
- printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + s;\n");
- printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
- printf ("\t}\n");
- need_endlabel = 1;
- }
- printf ("\tm68k_do_bsr(m68k_getpc() + %d, s);\n", m68k_pc_offset);
- fill_prefetch_0 ();
- m68k_pc_offset = 0;
- break;
- case i_Bcc:
- if (curi->size == sz_long) {
- if (cpu_level < 2) {
- printf ("\tm68k_incpc(2);\n");
- printf ("\tif (!cctrue(%d)) goto %s;\n", curi->cc, endlabelstr);
- printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
- printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 1;\n");
- printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %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);
- printf ("\tif (!cctrue(%d)) goto didnt_jump;\n", curi->cc);
- if (using_exception_3) {
- printf ("\tif (src & 1) {\n");
- printf ("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
- printf ("\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)src;\n");
- printf ("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
- printf ("\t}\n");
- need_endlabel = 1;
- }
- #ifdef USE_COMPILER
- printf ("\tm68k_setpc_bcc(m68k_getpc() + 2 + (uae_s32)src);\n");
- #else
- printf ("\tm68k_incpc ((uae_s32)src + 2);\n");
- #endif
- fill_prefetch_0 ();
- printf ("\tgoto %s;\n", endlabelstr);
- 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 (!cctrue(%d)) {\n", curi->cc);
- 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\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
- printf ("\t\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)offs + 2;\n");
- printf ("\t\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
- printf ("\t\t}\n");
- need_endlabel = 1;
- }
- #ifdef USE_COMPILER
- printf ("\t\t\tm68k_setpc_bcc(m68k_getpc() + (uae_s32)offs + 2);\n");
- #else
- printf ("\t\t\tm68k_incpc((uae_s32)offs + 2);\n");
- #endif
- fill_prefetch_0 ();
- printf ("\t\tgoto %s;\n", endlabelstr);
- 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 = cctrue(%d) ? 0xff : 0;\n", curi->cc);
- genastore ("val", curi->smode, "srcreg", curi->size, "src");
- break;
- case i_DIVU:
- printf ("\tuaecptr oldpc = m68k_getpc();\n");
- genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
- genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
- printf ("\tif(src == 0) { Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
- 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) { SET_VFLG (1); SET_NFLG (1); SET_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");
- printf ("\t}\n");
- insn_n_cycles += 68;
- need_endlabel = 1;
- break;
- case i_DIVS:
- printf ("\tuaecptr oldpc = m68k_getpc();\n");
- genamode (curi->smode, "srcreg", sz_word, "src", 1, 0);
- genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0);
- printf ("\tif(src == 0) { Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
- 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) { SET_VFLG (1); SET_NFLG (1); SET_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");
- printf ("\t}\n");
- insn_n_cycles += 72;
- 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");
- insn_n_cycles += 32;
- 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");
- insn_n_cycles += 32;
- break;
- case i_CHK:
- printf ("\tuaecptr oldpc = m68k_getpc();\n");
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0);
- printf ("\tif ((uae_s32)dst < 0) { SET_NFLG (1); Exception(6,oldpc); goto %s; }\n", endlabelstr);
- printf ("\telse if (dst > src) { SET_NFLG (0); Exception(6,oldpc); goto %s; }\n", endlabelstr);
- need_endlabel = 1;
- break;
-
- case i_CHK2:
- printf ("\tuaecptr oldpc = m68k_getpc();\n");
- genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
- genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 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 (upper == reg || lower == reg);\n");
- printf ("\tSET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);\n");
- printf ("\tif ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto %s; }\n}\n", endlabelstr);
- need_endlabel = 1;
- 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 ("\tCLEAR_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\tSET_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\tSET_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 ("\tCLEAR_CZNV;\n");
- printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
- printf ("\t\tSET_VFLG (val != 0);\n");
- printf ("\t\tSET_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\tSET_VFLG ((val & mask) != mask && (val & mask) != 0);\n");
- printf ("\t\tval <<= cnt - 1;\n");
- printf ("\t\tSET_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 ("\tCLEAR_CZNV;\n");
- printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
- printf ("\t\tSET_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\tSET_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 ("\tCLEAR_CZNV;\n");
- printf ("\tif (cnt >= %d) {\n", bit_size (curi->size));
- printf ("\t\tSET_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\tSET_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 ("\tCLEAR_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 ("\tSET_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 ("\tCLEAR_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 ("\tSET_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 ("\tCLEAR_CZNV;\n");
- if (! source_is_imm1_8 (curi))
- force_range_for_rox ("cnt", curi->size);
- if (source_is_imm1_8 (curi))
- printf ("{");
- else
- 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) << cnt) | (loval >> 1);\n");
- printf ("\tSET_XFLG (carry);\n");
- printf ("\tval &= %s;\n", bit_mask (curi->size));
- printf ("\t} }\n");
- printf ("\tSET_CFLG (GET_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 ("\tCLEAR_CZNV;\n");
- if (! source_is_imm1_8 (curi))
- force_range_for_rox ("cnt", curi->size);
- if (source_is_imm1_8 (curi))
- printf ("{");
- else
- printf ("\tif (cnt > 0) {\n");
- printf ("\tcnt--;\n");
- printf ("\t{\n\tuae_u32 carry;\n");
- printf ("\tuae_u32 hival = (val << 1) | GET_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 ("\tSET_XFLG (carry);\n");
- printf ("\tval &= %s;\n", bit_mask (curi->size));
- printf ("\t} }\n");
- printf ("\tSET_CFLG (GET_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 ("\tSET_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 ("\tSET_CFLG (sign != 0);\n");
- duplicate_carry ();
-
- printf ("\tSET_VFLG (GET_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 ("SET_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 ("SET_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 ("SET_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 ("SET_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 (GET_XFLG) val |= 1;\n");
- genflags (flag_logical, curi->size, "val", "", "");
- printf ("SET_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 (GET_XFLG) val |= %s;\n", cmask (curi->size));
- genflags (flag_logical, curi->size, "val", "", "");
- printf ("SET_CFLG (carry);\n");
- duplicate_carry ();
- genastore ("val", curi->smode, "srcreg", curi->size, "data");
- break;
- case i_MOVEC2:
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- start_brace ();
- printf ("\tint regno = (src >> 12) & 15;\n");
- printf ("\tuae_u32 *regp = regs.regs + regno;\n");
- printf ("\tm68k_movec2(src & 0xFFF, regp);\n");
- break;
- case i_MOVE2C:
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- start_brace ();
- printf ("\tint regno = (src >> 12) & 15;\n");
- printf ("\tuae_u32 *regp = regs.regs + regno;\n");
- printf ("\tm68k_move2c(src & 0xFFF, regp);\n");
- break;
- case i_CAS:
- {
- int old_brace_level;
- genamode (curi->smode, "srcreg", curi->size, "src", 1, 0);
- genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 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)");
- 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);
- 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) {\n");
- genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
- printf ("\tif (GET_ZFLG) {\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) {\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) {\n");
- genflags (flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
- printf ("\tif (GET_ZFLG) {\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) {\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);
- 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);
- 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);
- 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);\n");
- break;
- case i_CALLM: /* not present in 68030 */
- sync_m68k_pc ();
- printf ("\top_illg(opcode);\n");
- break;
- case i_RTM: /* not present in 68030 */
- sync_m68k_pc ();
- printf ("\top_illg(opcode);\n");
- break;
- case i_TRAPcc:
- if (curi->smode != am_unknown && curi->smode != am_illg)
- genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
- printf ("\tif (cctrue(%d)) { Exception(7,m68k_getpc()); goto %s; }\n", curi->cc, endlabelstr);
- need_endlabel = 1;
- break;
- case i_DIVL:
- sync_m68k_pc ();
- start_brace ();
- printf ("\tuaecptr oldpc = m68k_getpc();\n");
- genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
- genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 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);
- genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 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);
- genamode (curi->dmode, "dstreg", sz_long, "dst", 2, 0);
- start_brace ();
- printf ("\tuae_s32 offset = extra & 0x800 ? m68k_dreg(regs, (extra >> 6) & 7) : (extra >> 6) & 0x1f;\n");
- printf ("\tint width = (((extra & 0x20 ? 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 (tmp & (1 << (width-1)) ? 1 : 0);\n");
- printf ("\tSET_ZFLG (tmp == 0); SET_VFLG (0); SET_CFLG (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) 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");
- 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 ());
- 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 ());
- 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 ());
- 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 ());
- 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);
- genflags (flag_logical, curi->size, "src", "", "");
- printf ("\tsrc |= 0x80;\n");
- genastore ("src", curi->smode, "srcreg", curi->size, "src");
- break;
- case i_FPP:
- genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
- sync_m68k_pc ();
- swap_opcode ();
- printf ("\tfpp_opp(opcode,extra);\n");
- break;
- case i_FDBcc:
- genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
- sync_m68k_pc ();
- swap_opcode ();
- printf ("\tfdbcc_opp(opcode,extra);\n");
- break;
- case i_FScc:
- genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0);
- sync_m68k_pc ();
- swap_opcode ();
- printf ("\tfscc_opp(opcode,extra);\n");
- break;
- case i_FTRAPcc:
- sync_m68k_pc ();
- start_brace ();
- printf ("\tuaecptr oldpc = m68k_getpc();\n");
- if (curi->smode != am_unknown && curi->smode != am_illg)
- genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0);
- sync_m68k_pc ();
- swap_opcode ();
- printf ("\tftrapcc_opp(opcode,oldpc);\n");
- break;
- case i_FBcc:
- sync_m68k_pc ();
- start_brace ();
- printf ("\tuaecptr pc = m68k_getpc();\n");
- genamode (curi->dmode, "srcreg", curi->size, "extra", 1, 0);
- sync_m68k_pc ();
- swap_opcode ();
- printf ("\tfbcc_opp(opcode,pc,extra);\n");
- break;
- case i_FSAVE:
- sync_m68k_pc ();
- swap_opcode ();
- printf ("\tfsave_opp(opcode);\n");
- break;
- case i_FRESTORE:
- sync_m68k_pc ();
- swap_opcode ();
- printf ("\tfrestore_opp(opcode);\n");
- break;
- case i_CINVL:
- case i_CINVP:
- case i_CINVA:
- case i_CPUSHL:
- case i_CPUSHP:
- case i_CPUSHA:
- 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());
- 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);
- genamode (curi->dmode, "dstreg", curi->size, "memd", 0, 2);
- 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);
- sync_m68k_pc ();
- swap_opcode ();
- printf ("\tmmu_op(opcode,extra);\n");
- break;
- default:
- abort ();
- break;
- }
- finish_braces ();
- sync_m68k_pc ();
- }
-
- static void generate_includes (FILE * f)
- {
- fprintf (f, "#include \"sysdeps.h\"\n");
- fprintf (f, "#include \"m68k.h\"\n");
- fprintf (f, "#include \"memory.h\"\n");
- fprintf (f, "#include \"readcpu.h\"\n");
- fprintf (f, "#include \"newcpu.h\"\n");
- fprintf (f, "#include \"cputbl.h\"\n");
- }
-
- 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, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp],
- opcode, lookuptab[i].name);
- return;
- }
- fprintf (stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name);
- fprintf (headerfile, "extern cpuop_func op_%lx_%d;\n", opcode, postfix);
- printf ("void REGPARAM2 op_%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 0
- /* Check that we can do the little endian optimization safely. */
- if (pos < 8 && (smsk >> (8 - pos)) != 0)
- abort ();
- #endif
- printf ("#ifdef HAVE_GET_WORD_UNSWAPPED\n");
-
- if (pos < 8 && (smsk >> (8 - pos)) != 0)
- sprintf (source, "(((opcode >> %d) | (opcode << %d)) & %d)",
- pos ^ 8, 8 - pos, dmsk);
- else if (pos != 8)
- sprintf (source, "((opcode >> %d) & %d)", pos ^ 8, 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);
-
- printf ("#else\n");
-
- 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);
-
- printf ("#endif\n");
- }
- }
- 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
- printf ("#ifdef HAVE_GET_WORD_UNSWAPPED\n");
-
- if (pos < 8 && (dmsk >> (8 - pos)) != 0)
- printf ("\tuae_u32 dstreg = ((opcode >> %d) | (opcode << %d)) & %d;\n",
- pos ^ 8, 8 - pos, dmsk);
- else if (pos != 8)
- printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
- pos ^ 8, dmsk);
- else
- printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk);
-
- printf ("#else\n");
-
- if (pos)
- printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
- pos, dmsk);
- else
- printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk);
-
- printf ("#endif\n");
- }
- }
- 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;
- #if !USE_PREFETCH_BUFFER
- /* gb-- No need for a prefetch buffer, nor exception 3 handling */
- /* Anyway, Basilisk2 does not use the op_smalltbl_5 table... */
- for (i = 0; i <= 4; i++) {
- #else
- for (i = 0; i < 6; i++) {
- #endif
- cpu_level = 4 - i;
- if (i == 5) {
- cpu_level = 0;
- using_prefetch = 1;
- using_exception_3 = 1;
- for (rp = 0; rp < nr_cpuop_funcs; rp++)
- opcode_next_clev[rp] = 0;
- }
- postfix = i;
- fprintf (stblfile, "struct cputbl op_smalltbl_%d[] = {\n", postfix);
-
- /* 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, 0 }};\n");
- }
- }
-
- int main (int argc, char **argv)
- {
- read_table68k ();
- do_merges ();
-
- opcode_map = (int *) malloc (sizeof (int) * nr_cpuop_funcs);
- opcode_last_postfix = (int *) malloc (sizeof (int) * nr_cpuop_funcs);
- opcode_next_clev = (int *) malloc (sizeof (int) * nr_cpuop_funcs);
- counts = (unsigned long *) malloc (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.cpp", "wb");
- freopen ("cpuemu.cpp", "wb", stdout);
-
- generate_includes (stdout);
- generate_includes (stblfile);
-
- generate_func ();
-
- free (table68k);
- return 0;
- }
-