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[/] [ao68000/] [trunk/] [tests/] [compare_with_winuae/] [winuae/] [gencpu.c] - Rev 16
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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. * * The source for the insn timings is Markt & Technik's Amiga Magazin 8/1992. * * Copyright 1995, 1996, 1997, 1998, 1999, 2000 Bernd Schmidt */ //AO#include "sysconfig.h" //AO#include "sysdeps.h" #include "ao.h" #include <ctype.h> #include "readcpu.h" #define BOOL_TYPE "int" /* Define the minimal 680x0 where NV flags are not affected by xBCD instructions. */ #define xBCD_KEEPS_NV_FLAGS 4 static FILE *headerfile; static FILE *stblfile; static int using_prefetch, using_indirect, using_mmu; static int using_ce020; static int using_exception_3; static int using_ce; static int cpu_level; static int count_read, count_write, count_cycles, count_ncycles; static int count_read_ea, count_write_ea, count_cycles_ea; static int optimized_flags; #define GF_APDI 1 #define GF_AD8R 2 #define GF_PC8R 4 #define GF_AA 7 #define GF_NOREFILL 8 #define GF_PREFETCH 16 #define GF_FC 32 /* 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 int generate_stbl; static int fixupcnt; #define GENA_GETV_NO_FETCH 0 #define GENA_GETV_FETCH 1 #define GENA_GETV_FETCH_ALIGN 2 #define GENA_MOVEM_DO_INC 0 #define GENA_MOVEM_NO_INC 1 #define GENA_MOVEM_MOVE16 2 static void read_counts (void) { FILE *file; unsigned long opcode, count, total; char name[20]; int nr = 0; memset (counts, 0, 65536 * sizeof *counts); count = 0; 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] = 5; 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] = 5; 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, limit_braces; static int m68k_pc_offset; static int insn_n_cycles, insn_n_cycles020; static void fpulimit (void) { if (limit_braces) return; printf ("\n#ifdef FPUEMU\n"); limit_braces = n_braces; n_braces = 0; } static void cpulimit (void) { printf ("#ifndef CPUEMU_68000_ONLY\n"); } static void returncycles (char *s, int cycles) { if (using_ce) return; if (using_ce020) printf ("%sreturn;\n", s); else printf ("%sreturn %d * CYCLE_UNIT / 2;\n", s, cycles); } static void addcycles_ce020 (int cycles) { if (!using_ce020) return; if (cycles > 0) printf ("\tregs.ce020memcycles += %d * cpucycleunit;\n", cycles); count_cycles += cycles; } static void addcycles000 (int cycles) { if (!using_ce) return; printf ("\tdo_cycles_ce000 (%d);\n", cycles); count_cycles += cycles; } static void addcycles000_2 (char *s, int cycles) { if (!using_ce) return; printf ("%sdo_cycles_ce000 (%d);\n", s, cycles); count_cycles += cycles; } static void addcycles000_3 (char *s) { if (!using_ce) return; printf ("%sif (cycles > 0) do_cycles_ce000 (cycles);\n", s); count_ncycles++; } static int isreg (amodes mode) { if (mode == Dreg || mode == Areg) return 1; return 0; } 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 void gen_nextilong (char *type, char *name, int norefill) { int r = m68k_pc_offset; m68k_pc_offset += 4; if (using_ce020) { printf ("\t%s %s = get_long_ce020_prefetch (%d);\n", type, name, r); count_read += 2; } else if (using_ce) { printf ("\t%s %s;\n", type, name); /* we must do this because execution order of (something | something2) is not defined */ if (norefill) { printf ("\t%s = get_word_ce_prefetch (%d) << 16;\n", name, r + 2); count_read++; printf ("\t%s |= regs.irc;\n", name); } else { printf ("\t%s = get_word_ce_prefetch (%d) << 16;\n", name, r + 2); count_read++; printf ("\t%s |= get_word_ce_prefetch (%d);\n", name, r + 4); count_read++; } } else { if (using_prefetch) { if (norefill) { printf ("\t%s %s;\n", type, name); printf ("\t%s = get_word_prefetch (%d) << 16;\n", name, r + 2); count_read++; printf ("\t%s |= regs.irc;\n", name); insn_n_cycles += 4; } else { printf ("\t%s %s = get_long_prefetch (%d);\n", type, name, r + 2); count_read++; count_read++; insn_n_cycles += 8; } } else if (using_indirect) { insn_n_cycles += 8; printf ("\t%s %s = get_ilongi (%d);\n", type, name, r); } else if (using_mmu) { insn_n_cycles += 8; printf ("\t%s %s = get_ilong_mmu (%d);\n", type, name, r); } else { insn_n_cycles += 8; printf ("\t%s %s = get_ilong (%d);\n", type, name, r); } } } static const char *gen_nextiword (int norefill) { static char buffer[80]; int r = m68k_pc_offset; m68k_pc_offset += 2; if (using_ce020) { sprintf (buffer, "get_word_ce020_prefetch (%d)", r); count_read++; } else if (using_ce) { if (norefill) { strcpy (buffer, "regs.irc"); } else { sprintf (buffer, "get_word_ce_prefetch (%d)", r + 2); count_read++; } } else { if (using_prefetch) { if (norefill) { sprintf (buffer, "regs.irc", r); } else { sprintf (buffer, "get_word_prefetch (%d)", r + 2); count_read++; insn_n_cycles += 4; } } else if (using_indirect) { sprintf (buffer, "get_iwordi(%d)", r); insn_n_cycles += 4; } else if (using_mmu) { sprintf (buffer, "get_iword_mmu (%d)", r); insn_n_cycles += 4; } else { sprintf (buffer, "get_iword (%d)", r); insn_n_cycles += 4; } } return buffer; } static const char *gen_nextibyte (int norefill) { static char buffer[80]; int r = m68k_pc_offset; m68k_pc_offset += 2; if (using_ce020) { sprintf (buffer, "(uae_u8)get_word_ce020_prefetch (%d)", r); count_read++; } else if (using_ce) { if (norefill) { strcpy (buffer, "(uae_u8)regs.irc"); } else { sprintf (buffer, "(uae_u8)get_word_ce_prefetch (%d)", r + 2); count_read++; } } else { insn_n_cycles += 4; if (using_prefetch) { if (norefill) { sprintf (buffer, "(uae_u8)regs.irc", r); } else { sprintf (buffer, "(uae_u8)get_word_prefetch (%d)", r + 2); insn_n_cycles += 4; count_read++; } } else if (using_indirect) { sprintf (buffer, "get_ibytei (%d)", r); insn_n_cycles += 4; } else if (using_mmu) { sprintf (buffer, "get_ibyte_mmu (%d)", r); insn_n_cycles += 4; } else { sprintf (buffer, "get_ibyte (%d)", r); insn_n_cycles += 4; } } return buffer; } static void irc2ir (void) { if (!using_prefetch) return; printf ("\tregs.ir = regs.irc;\n"); } static int did_prefetch; static void fill_prefetch_2 (void) { if (!using_prefetch) return; if (using_ce) printf ("\tget_word_ce_prefetch (%d);\n", m68k_pc_offset + 2); else printf ("\tget_word_prefetch (%d);\n", m68k_pc_offset + 2); did_prefetch = 1; count_read++; insn_n_cycles += 4; } static void fill_prefetch_1 (int o) { if (!using_prefetch) return; if (using_ce) { printf ("\tget_word_ce_prefetch (%d);\n", o); } else { printf ("\tget_word_prefetch (%d);\n", o); } did_prefetch = 1; count_read++; insn_n_cycles += 4; } static void fill_prefetch_full (void) { fill_prefetch_1 (0); irc2ir (); fill_prefetch_1 (2); } static void fill_prefetch_0 (void) { if (!using_prefetch) return; if (using_ce) printf ("\tget_word_ce_prefetch (0);\n"); else printf ("\tget_word_prefetch (0);\n"); did_prefetch = 1; count_read++; insn_n_cycles += 4; } static void fill_prefetch_next_1 (void) { irc2ir (); fill_prefetch_1 (m68k_pc_offset + 2); } static void fill_prefetch_next (void) { fill_prefetch_next_1 (); } #if 0 static void fill_prefetch_next_delay (int extracycles) { if (!using_prefetch) return; if (using_ce) { if (extracycles > 0) { printf("\t{\n"); fill_prefetch_next (); printf("\tif (%d > 0) do_cycles(%d * CYCLE_UNIT / 2);\n", extracycles, extracycles); printf("\t}\n"); } else { fill_prefetch_next (); } } else { fill_prefetch_next (); } } #endif static void fill_prefetch_finish (void) { if (did_prefetch || !using_prefetch) return; fill_prefetch_1 (m68k_pc_offset); } static void setpc (const char *format, ...) { va_list parms; char buffer[1000]; va_start (parms, format); _vsnprintf (buffer, 1000 - 1, format, parms); va_end (parms); if (using_mmu) printf ("\tm68k_setpc_mmu (%s);\n", buffer); else printf ("\tm68k_setpc (%s);\n", buffer); } static void incpc (const char *format, ...) { va_list parms; char buffer[1000]; va_start (parms, format); _vsnprintf (buffer, 1000 - 1, format, parms); va_end (parms); if (using_mmu) printf ("\tm68k_incpci (%s);\n", buffer); else printf ("\tm68k_incpc (%s);\n", buffer); } static void sync_m68k_pc (void) { if (m68k_pc_offset == 0) return; incpc ("%d", m68k_pc_offset); m68k_pc_offset = 0; } static void gen_set_fault_pc (void) { if (!using_mmu) return; sync_m68k_pc (); printf ("\tregs.fault_pc = m68k_getpci ();\n"); 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 */ /* fixup indicates if we want to fix up adress registers in pre decrement * or post increment mode now (0) or later (1). A value of 2 will then be * used to do the actual fix up. This allows to do all memory readings * before any register is modified, and so to rerun operation without * side effect in case a bus fault is generated by any memory access. * XJ - 2006/11/13 */ static void genamode2 (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem, int flags, int fixup, int e3fudge) { char namea[100]; //AO extra //int m68k_pc_offset_last = m68k_pc_offset; sprintf (namea, "%sa", name); start_brace (); switch (mode) { case Dreg: if (movem) abort (); if (getv == 1) switch (size) { case sz_byte: #ifdef USE_DUBIOUS_BIGENDIAN_OPTIMIZATION /* This causes the target compiler to generate better code on few systems */ 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: #ifdef USE_DUBIOUS_BIGENDIAN_OPTIMIZATION 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: // (An) printf ("\tuaecptr %sa = m68k_areg (regs, %s);\n", name, reg); break; case Aipi: // (An)+ printf ("\tuaecptr %sa = m68k_areg (regs, %s);\n", name, reg); break; case Apdi: // -(An) printf ("\tuaecptr %sa;\n", name); switch (size) { case sz_byte: if (movem) printf ("\t%sa = m68k_areg (regs, %s);\n", name, reg); else printf ("\t%sa = m68k_areg (regs, %s) - areg_byteinc[%s];\n", name, reg, reg); break; case sz_word: printf ("\t%sa = m68k_areg (regs, %s) - %d;\n", name, reg, movem ? 0 : 2); break; case sz_long: printf ("\t%sa = m68k_areg (regs, %s) - %d;\n", name, reg, movem ? 0 : 4); break; default: abort (); } if (!(flags & GF_APDI)) { addcycles000 (2); insn_n_cycles += 2; count_cycles_ea += 2; } break; case Ad16: // (d16,An) printf ("\tuaecptr %sa = m68k_areg (regs, %s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword (flags & GF_NOREFILL)); count_read_ea++; break; case Ad8r: // (d8,An,Xn) printf ("\tuaecptr %sa;\n", name); if (cpu_level > 1) { if (next_cpu_level < 1) next_cpu_level = 1; sync_m68k_pc (); start_brace (); /* This would ordinarily be done in gen_nextiword, which we bypass. */ insn_n_cycles += 4; if (using_ce020) printf ("\t%sa = get_disp_ea_020ce (m68k_areg (regs, %s), next_iword_020ce ());\n", name, reg); else if (using_mmu) printf ("\t%sa = get_disp_ea_040mmu (m68k_areg (regs, %s), next_iword_mmu ());\n", name, reg); else printf ("\t%sa = get_disp_ea_020 (m68k_areg (regs, %s), next_iword ());\n", name, reg); } else { printf ("\t%sa = get_disp_ea_000 (m68k_areg (regs, %s), %s);\n", name, reg, gen_nextiword (flags & GF_NOREFILL)); count_read_ea++; } if (!(flags & GF_AD8R)) { addcycles000 (2); insn_n_cycles += 2; count_cycles_ea += 2; } break; case PC16: // (d16,PC,Xn) printf ("\tuaecptr %sa = m68k_getpc () + %d;\n", name, m68k_pc_offset); printf ("\t%sa += (uae_s32)(uae_s16)%s;\n", name, gen_nextiword (flags & GF_NOREFILL)); break; case PC8r: // (d8,PC,Xn) printf ("\tuaecptr tmppc;\n"); printf ("\tuaecptr %sa;\n", name); if (cpu_level > 1) { if (next_cpu_level < 1) next_cpu_level = 1; sync_m68k_pc (); start_brace (); /* This would ordinarily be done in gen_nextiword, which we bypass. */ insn_n_cycles += 4; printf ("\ttmppc = m68k_getpc ();\n"); if (using_ce020) printf ("\t%sa = get_disp_ea_020ce (tmppc, next_iword_020ce ());\n", name); else if (using_mmu) printf ("\t%sa = get_disp_ea_040mmu (tmppc, next_iword_mmu ());\n", name); else printf ("\t%sa = get_disp_ea_020 (tmppc, next_iword ());\n", name); } else { printf ("\ttmppc = m68k_getpc () + %d;\n", m68k_pc_offset); printf ("\t%sa = get_disp_ea_000 (tmppc, %s);\n", name, gen_nextiword (flags & GF_NOREFILL)); } if (!(flags & GF_PC8R)) { addcycles000 (2); insn_n_cycles += 2; count_cycles_ea += 2; } break; case absw: printf ("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword (flags & GF_NOREFILL)); break; case absl: gen_nextilong ("uaecptr", namea, flags & GF_NOREFILL); count_read_ea += 2; break; case imm: if (getv != 1) abort (); insn_n_cycles020++; switch (size) { case sz_byte: printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte (flags & GF_NOREFILL)); count_read_ea++; break; case sz_word: printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword (flags & GF_NOREFILL)); count_read_ea++; break; case sz_long: gen_nextilong ("uae_s32", name, flags & GF_NOREFILL); count_read_ea += 2; break; default: abort (); } return; case imm0: if (getv != 1) abort (); printf ("\tuae_s8 %s = %s;\n", name, gen_nextibyte (flags & GF_NOREFILL)); count_read_ea++; return; case imm1: if (getv != 1) abort (); printf ("\tuae_s16 %s = %s;\n", name, gen_nextiword (flags & GF_NOREFILL)); count_read_ea++; return; case imm2: if (getv != 1) abort (); gen_nextilong ("uae_s32", name, flags & GF_NOREFILL); count_read_ea += 2; return; case immi: if (getv != 1) abort (); printf ("\tuae_u32 %s = %s;\n", name, reg); return; default: abort (); } /* We get here for all non-reg non-immediate addressing modes to * actually fetch the value. */ if ((using_prefetch || using_ce) && using_exception_3 && getv != 0 && size != sz_byte) { printf ("\tif (%sa & 1) {\n", name); //AO extra, m68k_pc_offset_last -> mk68k_pc_offset if(getv == 4 && size == sz_word && mode == Apdi) printf ("\t\texception3write (opcode, m68k_getpc () + %d, %sa - 2);\n", m68k_pc_offset + e3fudge, name); else if(getv == 4 && size == sz_long && mode == Apdi) printf ("\t\texception3write (opcode, m68k_getpc () + %d, %sa - 4);\n", m68k_pc_offset + e3fudge, name); else if(getv == 3 || getv == 4) printf ("\t\texception3write (opcode, m68k_getpc () + %d, %sa);\n", m68k_pc_offset + e3fudge, name); else if(mode == PC16 || mode == PC8r) printf ("\t\texception3i (opcode, m68k_getpc () + %d, %sa);\n", m68k_pc_offset + e3fudge, name); else printf ("\t\texception3 (opcode, m68k_getpc () + %d, %sa);\n", m68k_pc_offset + e3fudge, name); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t}\n"); need_endlabel = 1; start_brace (); } if (flags & GF_PREFETCH) fill_prefetch_next (); if (getv == 1) { start_brace (); if (using_ce020) { switch (size) { case sz_byte: insn_n_cycles += 4; printf ("\tuae_s8 %s = get_byte_ce020 (%sa);\n", name, name); count_read++; break; case sz_word: insn_n_cycles += 4; printf ("\tuae_s16 %s = get_word_ce020 (%sa);\n", name, name); count_read++; break; case sz_long: insn_n_cycles += 8; printf ("\tuae_s32 %s = get_long_ce020 (%sa);\n", name, name); count_read += 2; break; default: abort (); } } else if (using_ce) { switch (size) { case sz_byte: printf ("\tuae_s8 %s = get_byte_ce (%sa);\n", name, name); count_read++; break; case sz_word: printf ("\tuae_s16 %s = get_word_ce (%sa);\n", name, name); count_read++; break; case sz_long: printf ("\tuae_s32 %s = get_word_ce (%sa) << 16; %s |= get_word_ce (%sa + 2);\n", name, name, name, name); count_read += 2; break; default: abort (); } } else if (using_mmu) { if (flags & GF_FC) { switch (size) { case sz_byte: insn_n_cycles += 4; printf ("\tuae_s8 %s = sfc_get_byte (%sa);\n", name, name); break; case sz_word: insn_n_cycles += 4; printf ("\tuae_s16 %s = sfc_get_word (%sa);\n", name, name); break; case sz_long: insn_n_cycles += 8; printf ("\tuae_s32 %s = sfc_get_long (%sa);\n", name, name); break; default: abort (); } } else { switch (size) { case sz_byte: insn_n_cycles += 4; printf ("\tuae_s8 %s = get_byte_mmu (%sa);\n", name, name); break; case sz_word: insn_n_cycles += 4; printf ("\tuae_s16 %s = get_word_mmu (%sa);\n", name, name); break; case sz_long: insn_n_cycles += 8; printf ("\tuae_s32 %s = get_long_mmu (%sa);\n", name, name); break; default: abort (); } } } else { switch (size) { case sz_byte: insn_n_cycles += 4; printf ("\tuae_s8 %s = get_byte (%sa);\n", name, name); count_read++; break; case sz_word: insn_n_cycles += 4; printf ("\tuae_s16 %s = get_word (%sa);\n", name, name); count_read++; break; case sz_long: insn_n_cycles += 8; printf ("\tuae_s32 %s = get_long (%sa);\n", name, name); count_read += 2; 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: if (fixup == 1) { printf ("\tmmufixup[%d].reg = %s;\n", fixupcnt, reg); printf ("\tmmufixup[%d].value = m68k_areg (regs, %s);\n", fixupcnt, reg); } 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: if (fixup == 1) { printf ("\tmmufixup[%d].reg = %s;\n", fixupcnt, reg); printf ("\tmmufixup[%d].value = m68k_areg (regs, %s);\n", fixupcnt, reg); } printf ("\tm68k_areg (regs, %s) = %sa;\n", reg, name); break; default: break; } } static void genamode_fixup (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem, int flags, int fixup) { if (fixup != 2) { genamode2 (mode, reg, size, name, getv, movem, flags, fixup, 0); } else { if (!movem) { switch (mode) { case Aipi: case Apdi: printf ("\tmmufixup[0].reg = -1;\n", fixupcnt); break; } } } } static void genamode (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem, int flags) { genamode2 (mode, reg, size, name, getv, movem, flags, 0, 0); } static void genamode_pre (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem, int flags) { genamode_fixup (mode, reg, size, name, getv, movem, flags, using_mmu ? 1 : 0); } static void genamode_post (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem, int flags) { if (using_mmu) genamode_fixup (mode, reg, size, name, getv, movem, flags, 2); } static void genamode_e3 (amodes mode, char *reg, wordsizes size, char *name, int getv, int movem, int flags, int e3fudge) { genamode2 (mode, reg, size, name, getv, movem, flags, 0, e3fudge); } static void genastore_2 (char *from, amodes mode, char *reg, wordsizes size, char *to, int store_dir, int flags) { 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: 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: gen_set_fault_pc (); if (using_ce020) { switch (size) { case sz_byte: printf ("\tput_byte_ce020 (%sa,%s);\n", to, from); count_write++; break; case sz_word: if (cpu_level < 2 && (mode == PC16 || mode == PC8r)) abort (); printf ("\tput_word_ce020 (%sa,%s);\n", to, from); count_write++; break; case sz_long: if (cpu_level < 2 && (mode == PC16 || mode == PC8r)) abort (); printf ("\tput_long_ce020 (%sa, %s);\n", to, from); count_write += 2; break; default: abort (); } } else if (using_ce) { switch (size) { case sz_byte: printf ("\tput_byte_ce (%sa,%s);\n", to, from); count_write++; break; case sz_word: if (cpu_level < 2 && (mode == PC16 || mode == PC8r)) abort (); printf ("\tput_word_ce (%sa,%s);\n", to, from); count_write++; break; case sz_long: if (cpu_level < 2 && (mode == PC16 || mode == PC8r)) abort (); if (store_dir) printf ("\tput_word_ce (%sa + 2, %s); put_word_ce (%sa, %s >> 16);\n", to, from, to, from); else printf ("\tput_word_ce (%sa, %s >> 16); put_word_ce (%sa + 2, %s);\n", to, from, to, from); count_write += 2; break; default: abort (); } } else if (using_mmu) { switch (size) { case sz_byte: insn_n_cycles += 4; if (flags & GF_FC) printf ("\tdfc_put_byte (%sa,%s);\n", to, from); else printf ("\tput_byte_mmu (%sa,%s);\n", to, from); break; case sz_word: insn_n_cycles += 4; if (cpu_level < 2 && (mode == PC16 || mode == PC8r)) abort (); if (flags & GF_FC) printf ("\tdfc_put_word (%sa,%s);\n", to, from); else printf ("\tput_word_mmu (%sa,%s);\n", to, from); break; case sz_long: insn_n_cycles += 8; if (cpu_level < 2 && (mode == PC16 || mode == PC8r)) abort (); if (flags & GF_FC) printf ("\tdfc_put_long (%sa,%s);\n", to, from); else printf ("\tput_long_mmu (%sa,%s);\n", to, from); break; default: abort (); } } else { switch (size) { case sz_byte: insn_n_cycles += 4; printf ("\tput_byte (%sa,%s);\n", to, from); count_write++; break; case sz_word: insn_n_cycles += 4; if (cpu_level < 2 && (mode == PC16 || mode == PC8r)) abort (); printf ("\tput_word (%sa,%s);\n", to, from); count_write++; break; case sz_long: insn_n_cycles += 8; if (cpu_level < 2 && (mode == PC16 || mode == PC8r)) abort (); printf ("\tput_long (%sa,%s);\n", to, from); count_write += 2; break; default: abort (); } } break; case imm: case imm0: case imm1: case imm2: case immi: abort (); break; default: abort (); } } static void genastore (char *from, amodes mode, char *reg, wordsizes size, char *to) { genastore_2 (from, mode, reg, size, to, 0, 0); } static void genastore_rev (char *from, amodes mode, char *reg, wordsizes size, char *to) { genastore_2 (from, mode, reg, size, to, 1, 0); } static void genastore_fc (char *from, amodes mode, char *reg, wordsizes size, char *to) { genastore_2 (from, mode, reg, size, to, 1, GF_FC); } static void genmovemel (uae_u16 opcode) { char getcode[100]; int size = table68k[opcode].size == sz_long ? 4 : 2; if (using_mmu) { if (table68k[opcode].size == sz_long) { strcpy (getcode, "get_long_mmu (srca)"); } else { strcpy (getcode, "(uae_s32)(uae_s16)get_word_mmu (srca)"); } } else { if (table68k[opcode].size == sz_long) { strcpy (getcode, "get_long (srca)"); } else { strcpy (getcode, "(uae_s32)(uae_s16)get_word (srca)"); } } count_read += table68k[opcode].size == sz_long ? 2 : 1; printf ("\tuae_u16 mask = %s;\n", gen_nextiword (0)); printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n"); genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1, 0); start_brace (); printf ("\twhile (dmask) { m68k_dreg (regs, movem_index1[dmask]) = %s; srca += %d; dmask = movem_next[dmask]; }\n", getcode, size); printf ("\twhile (amask) { m68k_areg (regs, movem_index1[amask]) = %s; srca += %d; amask = movem_next[amask]; }\n", getcode, size); if (table68k[opcode].dmode == Aipi) { printf ("\tm68k_areg (regs, dstreg) = srca;\n"); count_read++; } fill_prefetch_next (); count_ncycles++; } static void genmovemel_ce (uae_u16 opcode) { int size = table68k[opcode].size == sz_long ? 4 : 2; printf ("\tuae_u16 mask = %s;\n", gen_nextiword (0)); printf ("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n"); printf ("\tuae_u32 v;\n"); genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1, GF_AA); if (table68k[opcode].dmode == Ad8r || table68k[opcode].dmode == PC8r) addcycles000 (2); start_brace (); if (table68k[opcode].size == sz_long) { printf ("\twhile (dmask) { v = get_word_ce(srca) << 16; v |= get_word_ce(srca + 2); m68k_dreg (regs, movem_index1[dmask]) = v; srca += %d; dmask = movem_next[dmask]; }\n", size); printf ("\twhile (amask) { v = get_word_ce(srca) << 16; v |= get_word_ce(srca + 2); m68k_areg (regs, movem_index1[amask]) = v; srca += %d; amask = movem_next[amask]; }\n", size); } else { printf ("\twhile (dmask) { m68k_dreg (regs, movem_index1[dmask]) = (uae_s32)(uae_s16)get_word_ce(srca); srca += %d; dmask = movem_next[dmask]; }\n", size); printf ("\twhile (amask) { m68k_areg (regs, movem_index1[amask]) = (uae_s32)(uae_s16)get_word_ce(srca); srca += %d; amask = movem_next[amask]; }\n", size); } printf ("\tget_word_ce (srca);\n"); // and final extra word fetch that goes nowhere.. count_read++; if (table68k[opcode].dmode == Aipi) printf ("\tm68k_areg (regs, dstreg) = srca;\n"); fill_prefetch_next (); count_ncycles++; } static void genmovemle (uae_u16 opcode) { char *putcode; int size = table68k[opcode].size == sz_long ? 4 : 2; if (using_mmu) { if (table68k[opcode].size == sz_long) { putcode = "put_long_mmu (srca"; } else { putcode = "put_word_mmu (srca"; } } else { if (table68k[opcode].size == sz_long) { putcode = "put_long (srca"; } else { putcode = "put_word (srca"; } } count_write += table68k[opcode].size == sz_long ? 2 : 1; printf ("\tuae_u16 mask = %s;\n", gen_nextiword (0)); //AO extra: 2->4 genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 4, 1, 0); start_brace (); if (table68k[opcode].dmode == Apdi) { printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n"); if (!using_mmu) printf ("\tint type = get_cpu_model() >= 68020;\n"); printf ("\twhile (amask) {\n"); printf ("\t\tsrca -= %d;\n", size); if (!using_mmu) printf ("\t\tif (type) m68k_areg (regs, dstreg) = srca;\n"); printf ("\t\t%s, m68k_areg (regs, movem_index2[amask]));\n", putcode); printf ("\t\tamask = movem_next[amask];\n"); printf ("\t}\n"); 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); } if (using_prefetch) { sync_m68k_pc (); fill_prefetch_next (); } count_ncycles++; } static void genmovemle_ce (uae_u16 opcode) { int size = table68k[opcode].size == sz_long ? 4 : 2; printf ("\tuae_u16 mask = %s;\n", gen_nextiword (0)); genamode (table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1, GF_AA); if (table68k[opcode].dmode == Ad8r || table68k[opcode].dmode == PC8r) { addcycles000 (2); } start_brace (); if (table68k[opcode].size == sz_long) { if (table68k[opcode].dmode == Apdi) { printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n"); printf ("\twhile (amask) { srca -= %d; put_word_ce (srca, m68k_areg (regs, movem_index2[amask]) >> 16); put_word_ce (srca + 2, m68k_areg (regs, movem_index2[amask])); amask = movem_next[amask]; }\n", size); printf ("\twhile (dmask) { srca -= %d; put_word_ce (srca, m68k_dreg (regs, movem_index2[dmask]) >> 16); put_word_ce (srca + 2, m68k_dreg (regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n", size); printf ("\tm68k_areg (regs, dstreg) = srca;\n"); } else { printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n"); printf ("\twhile (dmask) { put_word_ce (srca, m68k_dreg (regs, movem_index1[dmask]) >> 16); put_word_ce (srca + 2, m68k_dreg (regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n", size); printf ("\twhile (amask) { put_word_ce (srca, m68k_areg (regs, movem_index1[amask]) >> 16); put_word_ce (srca + 2, m68k_areg (regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n", size); } } else { if (table68k[opcode].dmode == Apdi) { printf ("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n"); printf ("\twhile (amask) { srca -= %d; put_word_ce (srca, m68k_areg (regs, movem_index2[amask])); amask = movem_next[amask]; }\n", size); printf ("\twhile (dmask) { srca -= %d; put_word_ce (srca, m68k_dreg (regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n", size); printf ("\tm68k_areg (regs, dstreg) = srca;\n"); } else { printf ("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n"); printf ("\twhile (dmask) { put_word_ce (srca, m68k_dreg (regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n", size); printf ("\twhile (amask) { put_word_ce (srca, m68k_areg (regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n", size); } } fill_prefetch_next (); count_ncycles++; } static void duplicate_carry (int n) { int i; for (i = 0; i <= n; i++) printf ("\t"); printf ("COPY_CARRY ();\n"); } typedef enum { flag_logical_noclobber, flag_logical, flag_add, flag_sub, flag_cmp, flag_addx, flag_subx, flag_z, 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_z: 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_z: printf ("\tSET_ZFLG (GET_ZFLG () & (%s == 0));\n", vstr); 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 (0); 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 (0); 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 (0); 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 (0); 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) { /* Temporarily deleted 68k/ARM flag optimizations. I'd prefer to have them in the appropriate m68k.h files and use just one copy of this code here. The API can be changed if necessary. */ if (optimized_flags) { switch (type) { case flag_add: case flag_sub: start_brace (); printf ("\tuae_u32 %s;\n", value); break; default: break; } /* At least some of those casts are fairly important! */ switch (type) { case flag_logical_noclobber: printf ("\t{uae_u32 oldcznv = GET_CZNV & ~(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 (regs, (uae_s8)(%s));\n", value); break; case sz_word: printf ("\toptflag_testw (regs, (uae_s16)(%s));\n", value); break; case sz_long: printf ("\toptflag_testl (regs, (uae_s32)(%s));\n", value); break; } printf ("\tIOR_CZNV (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 (regs, (uae_s8)(%s));\n", value); break; case sz_word: printf ("\toptflag_testw (regs, (uae_s16)(%s));\n", value); break; case sz_long: printf ("\toptflag_testl (regs, (uae_s32)(%s));\n", value); break; } } return; case flag_add: switch (size) { case sz_byte: printf ("\toptflag_addb (regs, %s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break; case sz_word: printf ("\toptflag_addw (regs, %s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break; case sz_long: printf ("\toptflag_addl (regs, %s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break; } return; case flag_sub: switch (size) { case sz_byte: printf ("\toptflag_subb (regs, %s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst); break; case sz_word: printf ("\toptflag_subw (regs, %s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst); break; case sz_long: printf ("\toptflag_subl (regs, %s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst); break; } return; case flag_cmp: switch (size) { case sz_byte: printf ("\toptflag_cmpb (regs, (uae_s8)(%s), (uae_s8)(%s));\n", src, dst); break; case sz_word: printf ("\toptflag_cmpw (regs, (uae_s16)(%s), (uae_s16)(%s));\n", src, dst); break; case sz_long: printf ("\toptflag_cmpl (regs, (uae_s32)(%s), (uae_s32)(%s));\n", src, dst); break; } return; default: break; } } genflags_normal (type, size, value, src, dst); } static void force_range_for_rox (const char *var, wordsizes size) { /* Could do a modulo operation here... which one is faster? */ switch (size) { case sz_long: printf ("\tif (%s >= 33) %s -= 33;\n", var, var); break; case sz_word: printf ("\tif (%s >= 34) %s -= 34;\n", var, var); printf ("\tif (%s >= 17) %s -= 17;\n", var, var); break; case sz_byte: printf ("\tif (%s >= 36) %s -= 36;\n", var, var); printf ("\tif (%s >= 18) %s -= 18;\n", var, var); printf ("\tif (%s >= 9) %s -= 9;\n", var, var); break; } } static const char *cmask (wordsizes size) { switch (size) { case sz_byte: return "0x80"; case sz_word: return "0x8000"; case sz_long: return "0x80000000"; default: abort (); } } static int source_is_imm1_8 (struct instr *i) { return i->stype == 3; } static void shift_ce (amodes dmode, int size) { if (using_ce && isreg (dmode)) { int c = size == sz_long ? 4 : 2; printf ("\t{\n"); printf ("\t\tint cycles = %d;\n", c); printf ("\t\tcycles += 2 * ccnt;\n"); addcycles000_3 ("\t\t"); printf ("\t}\n"); count_cycles += c; } } // BCHG/BSET/BCLR Dx,Dx or #xx,Dx adds 2 cycles if bit number > 15 static void bsetcycles (struct instr *curi) { if (curi->size == sz_byte) { printf ("\tsrc &= 7;\n"); } else { printf ("\tsrc &= 31;\n"); if (isreg (curi->dmode)) { addcycles000 (2); if (curi->mnemo != i_BTST && using_ce) { printf ("\tif (src > 15) do_cycles_ce000 (2);\n"); count_ncycles++; } } } } static int islongimm (struct instr *curi) { return (curi->size == sz_long && (curi->smode == Dreg || curi->smode == imm)); } static void gen_opcode (unsigned long int opcode) { struct instr *curi = table68k + opcode; char *srcl, *dstl; char *srcw, *dstw; char *srcb, *dstb; insn_n_cycles = using_prefetch ? 0 : 4; if (using_ce020) { srcl = "get_long_ce020"; dstl = "put_long_ce020"; srcw = "get_word_ce020"; dstw = "put_word_ce020"; srcb = "get_byte_ce020"; dstb = "put_byte_ce020"; } else if (using_mmu) { srcl = "get_long_mmu"; dstl = "put_long_mmu"; srcw = "get_word_mmu"; dstw = "put_word_mmu"; srcb = "get_byte_mmu"; dstb = "put_byte_mmu"; } else if (using_ce) { srcl = "get_long_ce"; dstl = "put_long_ce"; srcw = "get_word_ce"; dstw = "put_word_ce"; srcb = "get_byte_ce"; dstb = "put_byte_ce"; } else { srcl = "get_long"; dstl = "put_long"; srcw = "get_word"; dstw = "put_word"; srcb = "get_byte"; dstb = "put_byte"; } insn_n_cycles020 = 0; start_brace (); m68k_pc_offset = 2; switch (curi->plev) { case 0: /* not privileged */ break; case 1: /* unprivileged only on 68000 */ if (cpu_level == 0) break; if (next_cpu_level < 0) next_cpu_level = 0; /* fall through */ case 2: /* priviledged */ printf ("if (!regs.s) { Exception (8, 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: { int c = 0; genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); printf ("\tsrc %c= dst;\n", curi->mnemo == i_OR ? '|' : curi->mnemo == i_AND ? '&' : '^'); genflags (flag_logical, curi->size, "src", "", ""); if (curi->dmode == Dreg && curi->size == sz_long) { c += 2; if (curi->smode == imm || curi->smode == Dreg) c += 2; } if (c > 0) addcycles000 (c); fill_prefetch_next (); 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, 0); if (curi->size == sz_byte) { printf ("\tsrc &= 0xFF;\n"); } addcycles000 (4); fill_prefetch_next (); 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, 0); if (curi->size == sz_byte) { printf ("\tsrc |= 0xFF00;\n"); } addcycles000 (4); fill_prefetch_next (); printf ("\tregs.sr &= src;\n"); printf ("\tMakeFromSR ();\n"); break; case i_SUB: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); if (curi->dmode == Dreg) { int c = 0; if (curi->size == sz_long) { c += 2; if (curi->smode == imm || curi->smode == immi || curi->smode == Dreg) c += 2; } if (c > 0) addcycles000 (c); } fill_prefetch_next (); start_brace (); genflags (flag_sub, curi->size, "newv", "src", "dst"); genastore ("newv", curi->dmode, "dstreg", curi->size, "dst"); break; case i_SUBA: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0); if (curi->smode == immi) { int c = 4; if (c > 0) addcycles000 (c); } else { int c = curi->size == sz_long ? 2 : 4; if (islongimm (curi)) c += 2; if (c > 0) addcycles000 (c); } fill_prefetch_next (); start_brace (); printf ("\tuae_u32 newv = dst - src;\n"); genastore ("newv", curi->dmode, "dstreg", sz_long, "dst"); break; case i_SUBX: genamode_pre (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA); genamode_post (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); if (curi->size == sz_long && isreg (curi->smode)) addcycles000 (4); if (!isreg (curi->smode)) addcycles000 (2); fill_prefetch_next (); 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: genamode_pre (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA); genamode_post (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); fill_prefetch_next (); 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, tmp_newv;\n"); printf ("\tint bcd = 0;\n"); printf ("\tnewv = tmp_newv = newv_hi + newv_lo;\n"); printf ("\tif (newv_lo & 0xF0) { newv -= 6; bcd = 6; };\n"); printf ("\tif ((((dst & 0xFF) - (src & 0xFF) - (GET_XFLG () ? 1 : 0)) & 0x100) > 0xFF) { newv -= 0x60; }\n"); printf ("\tSET_CFLG ((((dst & 0xFF) - (src & 0xFF) - bcd - (GET_XFLG () ? 1 : 0)) & 0x300) > 0xFF);\n"); duplicate_carry (0); /* Manual says bits NV are undefined though a real 68040/060 don't change them */ if (cpu_level >= xBCD_KEEPS_NV_FLAGS) { if (next_cpu_level < xBCD_KEEPS_NV_FLAGS) next_cpu_level = xBCD_KEEPS_NV_FLAGS - 1; genflags (flag_z, curi->size, "newv", "", ""); } else { genflags (flag_zn, curi->size, "newv", "", ""); printf ("\tSET_VFLG ((tmp_newv & 0x80) != 0 && (newv & 0x80) == 0);\n"); } addcycles000 (2); genastore ("newv", curi->dmode, "dstreg", curi->size, "dst"); break; case i_ADD: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); if (curi->dmode == Dreg) { int c = 0; if (curi->size == sz_long) { c += 2; if (curi->smode == imm || curi->smode == immi || curi->smode == Dreg) c += 2; } if (c > 0) addcycles000 (c); } fill_prefetch_next (); start_brace (); genflags (flag_add, curi->size, "newv", "src", "dst"); genastore ("newv", curi->dmode, "dstreg", curi->size, "dst"); break; case i_ADDA: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0); if (curi->smode == immi) { int c = curi->size == sz_long ? 4 : 0; if (islongimm (curi)) c += 2; if (c > 0) addcycles000 (c); } else { int c = curi->size == sz_long ? 2 : 4; if (islongimm (curi)) c += 2; if (c > 0) addcycles000 (c); } fill_prefetch_next (); start_brace (); printf ("\tuae_u32 newv = dst + src;\n"); genastore ("newv", curi->dmode, "dstreg", sz_long, "dst"); break; case i_ADDX: genamode_pre (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA); genamode_post (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); if (curi->size == sz_long && isreg (curi->smode)) addcycles000 (4); if (!isreg (curi->smode)) addcycles000 (2); fill_prefetch_next (); 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_pre (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA); genamode_post (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); fill_prefetch_next (); 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, tmp_newv;\n"); printf ("\tint cflg;\n"); printf ("\tnewv = tmp_newv = newv_hi + newv_lo;"); printf ("\tif (newv_lo > 9) { newv += 6; }\n"); printf ("\tcflg = (newv & 0x3F0) > 0x90;\n"); printf ("\tif (cflg) newv += 0x60;\n"); printf ("\tSET_CFLG (cflg);\n"); duplicate_carry (0); /* Manual says bits NV are undefined though a real 68040 don't change them */ if (cpu_level >= xBCD_KEEPS_NV_FLAGS) { if (next_cpu_level < xBCD_KEEPS_NV_FLAGS) next_cpu_level = xBCD_KEEPS_NV_FLAGS - 1; genflags (flag_z, curi->size, "newv", "", ""); } else { genflags (flag_zn, curi->size, "newv", "", ""); printf ("\tSET_VFLG ((tmp_newv & 0x80) == 0 && (newv & 0x80) != 0);\n"); } addcycles000 (2); genastore ("newv", curi->dmode, "dstreg", curi->size, "dst"); break; case i_NEG: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); if (isreg (curi->smode) && curi->size == sz_long) addcycles000 (2); fill_prefetch_next (); start_brace (); genflags (flag_sub, curi->size, "dst", "src", "0"); genastore_rev ("dst", curi->smode, "srcreg", curi->size, "src"); break; case i_NEGX: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); if (isreg (curi->smode) && curi->size == sz_long) addcycles000 (2); fill_prefetch_next (); 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_rev ("newv", curi->smode, "srcreg", curi->size, "src"); break; case i_NBCD: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); if (isreg (curi->smode)) addcycles000 (2); fill_prefetch_next (); 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; }\n"); printf ("\tnewv = newv_hi + newv_lo;"); printf ("\tcflg = (newv & 0x1F0) > 0x90;\n"); printf ("\tif (cflg) newv -= 0x60;\n"); printf ("\tSET_CFLG (cflg);\n"); duplicate_carry(0); /* Manual says bits NV are undefined though a real 68040 don't change them */ if (cpu_level >= xBCD_KEEPS_NV_FLAGS) { if (next_cpu_level < xBCD_KEEPS_NV_FLAGS) next_cpu_level = xBCD_KEEPS_NV_FLAGS - 1; genflags (flag_z, curi->size, "newv", "", ""); } else { genflags (flag_zn, curi->size, "newv", "", ""); } genastore ("newv", curi->smode, "srcreg", curi->size, "src"); break; case i_CLR: genamode (curi->smode, "srcreg", curi->size, "src", cpu_level == 0 ? 1 : 2, 0, 0); if (isreg (curi->smode) && curi->size == sz_long) addcycles000 (2); fill_prefetch_next (); genflags (flag_logical, curi->size, "0", "", ""); genastore_rev ("0", curi->smode, "srcreg", curi->size, "src"); break; case i_NOT: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); if (isreg (curi->smode) && curi->size == sz_long) addcycles000 (2); fill_prefetch_next (); start_brace (); printf ("\tuae_u32 dst = ~src;\n"); genflags (flag_logical, curi->size, "dst", "", ""); genastore_rev ("dst", curi->smode, "srcreg", curi->size, "src"); break; case i_TST: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); fill_prefetch_next (); genflags (flag_logical, curi->size, "src", "", ""); break; case i_BTST: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); fill_prefetch_next (); bsetcycles (curi); printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n"); break; case i_BCHG: case i_BCLR: case i_BSET: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); bsetcycles (curi); if (curi->mnemo == i_BCLR && curi->dmode == Dreg) addcycles000 (2); fill_prefetch_next (); if (curi->mnemo == i_BCHG) { printf ("\tdst ^= (1 << src);\n"); printf ("\tSET_ZFLG (((uae_u32)dst & (1 << src)) >> src);\n"); } else if (curi->mnemo == i_BCLR) { printf ("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n"); printf ("\tdst &= ~(1 << src);\n"); } else if (curi->mnemo == i_BSET) { 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: genamode_pre (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, GF_AA); genamode_post (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA); fill_prefetch_next (); start_brace (); genflags (flag_cmp, curi->size, "newv", "src", "dst"); break; case i_CMP: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); if (curi->dmode == Dreg && curi->size == sz_long) addcycles000 (2); fill_prefetch_next (); start_brace (); genflags (flag_cmp, curi->size, "newv", "src", "dst"); break; case i_CMPA: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0); fill_prefetch_next (); addcycles000 (2); 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: // MOVEP R->M genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); printf ("\tuaecptr memp = m68k_areg (regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword (0)); if (curi->size == sz_word) { printf ("\t%s (memp, src >> 8); %s (memp + 2, src);\n", dstb, dstb); count_write += 2; } else { printf ("\t%s (memp, src >> 24); %s (memp + 2, src >> 16);\n", dstb, dstb); printf ("\t%s (memp + 4, src >> 8); %s (memp + 6, src);\n", dstb, dstb); count_write += 4; } fill_prefetch_next (); break; case i_MVPMR: // MOVEP M->R printf ("\tuaecptr memp = m68k_areg (regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword (0)); genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0, 0); if (curi->size == sz_word) { printf ("\tuae_u16 val = (%s (memp) << 8) + %s (memp + 2);\n", srcb, srcb); count_read += 2; } else { printf ("\tuae_u32 val = (%s (memp) << 24) + (%s (memp + 2) << 16)\n", srcb, srcb); printf (" + (%s (memp + 4) << 8) + %s (memp + 6);\n", srcb, srcb); count_read += 4; } fill_prefetch_next (); genastore ("val", curi->dmode, "dstreg", curi->size, "dst"); break; case i_MOVE: case i_MOVEA: { /* 2 MOVE instructions have special prefetch sequence: * - MOVE <ea>,-(An) = prefetch is before writes (Apdi) * - MOVE memory,(xxx).L, the most stupid ever. 2 prefetches after write * - all others = prefetch is done after writes */ int prefetch_done = 0; int dualprefetch = curi->dmode == absl && (curi->smode != Dreg && curi->smode != Areg && curi->smode != imm); genamode_pre (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); /* MOVE.L dx,(ax) exception3 PC points to next instruction. hackhackhack */ //AO extra: 2->3; (Aind ? 2) -> (Aind ? 0) genamode_e3 (curi->dmode, "dstreg", curi->size, "dst", 3, 0, 1 | (dualprefetch ? GF_NOREFILL : 0), curi->smode == Dreg && curi->dmode == Aind ? 0 : 0); genamode_post (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); if (curi->mnemo == i_MOVEA && curi->size == sz_word) printf ("\tsrc = (uae_s32)(uae_s16)src;\n"); if (curi->dmode == Apdi) { fill_prefetch_next (); prefetch_done = 1; } if (curi->mnemo == i_MOVE) genflags (flag_logical, curi->size, "src", "", ""); genastore ("src", curi->dmode, "dstreg", curi->size, "dst"); sync_m68k_pc (); if (dualprefetch) { fill_prefetch_full (); prefetch_done = 1; } if (!prefetch_done) fill_prefetch_next (); } break; case i_MVSR2: // MOVE FROM SR (like CLR, does dummy read first on 68000) //AO extra: (cpu_level == 0 ? 1 : 2) -> 3 genamode (curi->smode, "srcreg", sz_word, "src", 3, 0, 0); if (isreg (curi->smode)) addcycles000 (2); fill_prefetch_next (); 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: // MOVE TO SR genamode (curi->smode, "srcreg", sz_word, "src", 1, 0, 0); if (curi->size == sz_byte) { addcycles000 (8); printf ("\tMakeSR ();\n\tregs.sr &= 0xFF00;\n\tregs.sr |= src & 0xFF;\n"); } else { addcycles000 (4); printf ("\tregs.sr = src;\n"); } fill_prefetch_next (); printf ("\tMakeFromSR ();\n"); break; case i_SWAP: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0, 0); fill_prefetch_next (); start_brace (); printf ("\tuae_u32 dst = ((src >> 16)&0xFFFF) | ((src&0xFFFF)<<16);\n"); genflags (flag_logical, sz_long, "dst", "", ""); genastore ("dst", curi->smode, "srcreg", sz_long, "src"); break; case i_EXG: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); addcycles000 (2); fill_prefetch_next (); genastore ("dst", curi->smode, "srcreg", curi->size, "src"); genastore ("src", curi->dmode, "dstreg", curi->size, "dst"); break; case i_EXT: genamode (curi->smode, "srcreg", sz_long, "src", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 dst = (uae_s32)(uae_s8)src;\n"); break; case sz_word: printf ("\tuae_u16 dst = (uae_s16)(uae_s8)src;\n"); break; case sz_long: printf ("\tuae_u32 dst = (uae_s32)(uae_s16)src;\n"); break; default: abort (); } genflags (flag_logical, curi->size == sz_word ? sz_word : sz_long, "dst", "", ""); genastore ("dst", curi->smode, "srcreg", curi->size == sz_word ? sz_word : sz_long, "src"); break; case i_MVMEL: if (using_ce) genmovemel_ce (opcode); else genmovemel (opcode); break; case i_MVMLE: if (using_ce) genmovemle_ce (opcode); else genmovemle (opcode); break; case i_TRAP: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); gen_set_fault_pc (); sync_m68k_pc (); printf ("\tException (src + 32, 0);\n"); did_prefetch = 1; m68k_pc_offset = 0; break; case i_MVR2USP: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); fill_prefetch_next (); printf ("\tregs.usp = src;\n"); break; case i_MVUSP2R: genamode (curi->smode, "srcreg", curi->size, "src", 2, 0, 0); fill_prefetch_next (); genastore ("regs.usp", curi->smode, "srcreg", curi->size, "src"); break; case i_RESET: fill_prefetch_next (); printf ("\tcpureset ();\n"); addcycles000 (128); if (using_prefetch) printf ("\tregs.irc = get_iword (4);\n"); break; case i_NOP: fill_prefetch_next (); break; case i_STOP: if (using_prefetch) { printf ("\tregs.sr = regs.irc;\n"); m68k_pc_offset += 2; } else { genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); printf ("\tregs.sr = src;\n"); } printf ("\tMakeFromSR ();\n"); printf ("\tm68k_setstopped ();\n"); sync_m68k_pc (); // STOP does not prefetch anything did_prefetch = -1; break; case i_LPSTOP: /* 68060 */ printf ("\tuae_u16 sw = get_iword (2);\n"); printf ("\tuae_u16 sr;\n"); printf ("\tif (sw != (0x100|0x80|0x40)) { Exception (4, 0); goto %s; }\n", endlabelstr); printf ("\tsr = get_iword (4);\n"); printf ("\tif (!(sr & 0x8000)) { Exception (8, 0); goto %s; }\n", endlabelstr); printf ("\tregs.sr = sr;\n"); printf ("\tMakeFromSR ();\n"); printf ("\tm68k_setstopped();\n"); m68k_pc_offset += 4; sync_m68k_pc (); fill_prefetch_full (); break; case i_RTE: if (cpu_level == 0) { genamode (Aipi, "7", sz_word, "sr", 1, 0, GF_NOREFILL); genamode (Aipi, "7", sz_long, "pc", 1, 0, GF_NOREFILL); printf ("\tregs.sr = sr;\n"); //AO extra start printf ("\tMakeFromSR ();\n"); printf ("\tif (pc & 1)\n"); printf ("\t\texception3i(0x%04X, m68k_getpc () + 2, pc);\n", opcode); printf ("\telse\n"); //AO extra end setpc ("pc"); //printf ("\tMakeFromSR ();\n"); } else { int old_brace_level = n_braces; if (next_cpu_level < 0) next_cpu_level = 0; genamode (Aipi, "7", sz_word, "sr", 1, 0, 0); genamode (Aipi, "7", sz_long, "pc", 1, 0, 0); genamode (Aipi, "7", sz_word, "format", 1, 0, 0); printf ("\tm68k_do_rte (pc, sr, format, 0x%04x);\n", opcode); } /* PC is set and prefetch filled. */ m68k_pc_offset = 0; fill_prefetch_full (); break; case i_RTD: if (using_mmu) { genamode (curi->smode, "srcreg", curi->size, "offs", GENA_GETV_FETCH, GENA_MOVEM_DO_INC, 0); genamode (Aipi, "7", sz_long, "pc", GENA_GETV_FETCH, GENA_MOVEM_DO_INC, 0); printf ("\tm68k_areg(regs, 7) += offs;\n"); setpc ("pc"); } else { genamode (Aipi, "7", sz_long, "pc", 1, 0, 0); genamode (curi->smode, "srcreg", curi->size, "offs", 1, 0, 0); printf ("\tm68k_areg (regs, 7) += offs;\n"); printf ("\tif (pc & 1)\n"); printf ("\t\texception3 (0x%04X, m68k_getpc (), pc);\n", opcode); printf ("\telse\n"); setpc ("pc"); } /* PC is set and prefetch filled. */ m68k_pc_offset = 0; fill_prefetch_full (); break; case i_LINK: if (using_mmu) { genamode (curi->dmode, "dstreg", curi->size, "offs", GENA_GETV_FETCH, GENA_MOVEM_DO_INC, 0); genamode (Apdi, "7", sz_long, "old", GENA_GETV_FETCH_ALIGN, GENA_MOVEM_DO_INC, 0); genamode (curi->smode, "srcreg", sz_long, "src", GENA_GETV_FETCH, GENA_MOVEM_DO_INC, 0); genastore ("m68k_areg(regs, 7)", curi->smode, "srcreg", sz_long, "src"); printf ("\tm68k_areg(regs, 7) += offs;\n"); genastore ("src", Apdi, "7", sz_long, "old"); } else { //AO extra: 2->3 genamode (Apdi, "7", sz_long, "old", 3, 0, GF_AA); genamode (curi->smode, "srcreg", sz_long, "src", 1, 0, GF_AA); genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0, 0); genastore ("src", Apdi, "7", sz_long, "old"); genastore ("m68k_areg (regs, 7)", curi->smode, "srcreg", sz_long, "src"); printf ("\tm68k_areg (regs, 7) += offs;\n"); fill_prefetch_next (); } break; case i_UNLK: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); printf ("\tm68k_areg (regs, 7) = src;\n"); genamode (Aipi, "7", sz_long, "old", 1, 0, 0); fill_prefetch_next (); genastore ("old", curi->smode, "srcreg", curi->size, "src"); break; case i_RTS: if (using_ce) printf ("\tm68k_do_rts_ce ();\n"); else if (using_indirect) printf ("\tm68k_do_rtsi ();\n"); else if (using_mmu) printf ("\tm68k_do_rts_mmu ();\n"); else printf ("\tm68k_do_rts ();\n"); count_read += 2; m68k_pc_offset = 0; fill_prefetch_full (); break; case i_TRAPV: sync_m68k_pc (); //fill_prefetch_next (); printf ("\tif (GET_VFLG ()) {\n"); printf ("\t\tException (7, m68k_getpc ());\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t}\n"); //AO extra fill_prefetch_next (); need_endlabel = 1; break; case i_RTR: printf ("\tMakeSR ();\n"); genamode_pre (Aipi, "7", sz_word, "sr", 1, 0, 0); genamode (Aipi, "7", sz_long, "pc", 1, 0, 0); genamode_post (Aipi, "7", sz_word, "sr", 1, 0, 0); printf ("\tregs.sr &= 0xFF00; sr &= 0xFF;\n"); printf ("\tregs.sr |= sr;\n"); //AO extra start printf ("\tMakeFromSR ();\n"); printf ("\tif (pc & 1)\n"); printf ("\t\texception3i(0x%04X, m68k_getpc () + 2, pc);\n", opcode); printf ("\telse\n"); //AO extra end setpc ("pc"); //printf ("\tMakeFromSR ();\n"); m68k_pc_offset = 0; fill_prefetch_full (); break; case i_JSR: // TODO: check stack write order genamode (curi->smode, "srcreg", curi->size, "src", 0, 0, GF_AA|GF_NOREFILL); start_brace (); printf ("\tuaecptr oldpc = m68k_getpc () + %d;\n", m68k_pc_offset); if (using_exception_3) { printf ("\tif (srca & 1) {\n"); printf ("\t\texception3i (opcode, oldpc, srca);\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t}\n"); need_endlabel = 1; } if (curi->smode == Ad16 || curi->smode == absw || curi->smode == PC16) addcycles000 (2); setpc ("srca"); m68k_pc_offset = 0; fill_prefetch_1 (0); if (curi->smode == Ad8r || curi->smode == PC8r) addcycles000 (6); //AO extra start genamode (Apdi, "7", sz_long, "dst", 3, 0, GF_AA); genastore ("oldpc", Apdi, "7", sz_long, "dst"); //AO extra end //printf ("\tm68k_areg (regs, 7) -= 4;\n"); //if (using_ce) { // printf ("\tput_word_ce (m68k_areg (regs, 7), oldpc >> 16);\n"); // printf ("\tput_word_ce (m68k_areg (regs, 7) + 2, oldpc);\n"); //} else { // printf ("\t%s (m68k_areg (regs, 7), oldpc);\n", dstl); //} count_write += 2; fill_prefetch_next (); break; case i_JMP: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0, GF_AA | ((curi->smode == Ad8r || curi->smode == PC8r) ? 0 : GF_NOREFILL)); if (using_exception_3) { printf ("\tif (srca & 1) {\n"); //AO extra 6->2 printf ("\t\texception3i (opcode, m68k_getpc () + %d, srca);\n", m68k_pc_offset); //printf ("\t\texception3i (opcode, m68k_getpc () + 6, srca);\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t}\n"); need_endlabel = 1; } if (curi->smode == Ad16 || curi->smode == Ad8r || curi->smode == absw || curi->smode == PC16 || curi->smode == PC8r) addcycles000 (2); setpc ("srca"); m68k_pc_offset = 0; fill_prefetch_full (); break; case i_BSR: //AO extra if(curi->size == sz_long) { printf ("\texception3i (opcode, m68k_getpc () + 2, m68k_getpc () + 1);\n"); printf ("\t\tgoto %s;\n", endlabelstr); need_endlabel = 1; break; } //AO extra end printf ("\tuae_s32 s;\n"); genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA|GF_NOREFILL); printf ("\ts = (uae_s32)src + 2;\n"); if (using_exception_3) { printf ("\tif (src & 1) {\n"); //AO extra printf ("\t\texception3i (opcode, m68k_getpc () + %d, m68k_getpc () + s);\n", m68k_pc_offset); //printf ("\t\texception3i (opcode, m68k_getpc () + 2, m68k_getpc () + s);\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t}\n"); need_endlabel = 1; } addcycles000 (2); if (using_ce) { printf ("\tm68k_do_bsr_ce (m68k_getpc () + %d, s);\n", m68k_pc_offset); } else if (using_indirect) { printf ("\tm68k_do_bsri (m68k_getpc () + %d, s);\n", m68k_pc_offset); } else if (using_mmu) { printf ("\tm68k_do_bsr_mmu (m68k_getpc () + %d, s);\n", m68k_pc_offset); } else { printf ("\tm68k_do_bsr (m68k_getpc () + %d, s, opcode);\n", m68k_pc_offset); } count_write += 2; m68k_pc_offset = 0; fill_prefetch_full (); break; case i_Bcc: if (curi->size == sz_long) { if (cpu_level < 2) { addcycles000 (2); printf ("\tif (cctrue (%d)) {\n", curi->cc); printf ("\t\texception3i (opcode, m68k_getpc () + 2, m68k_getpc () + 1);\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t}\n"); sync_m68k_pc (); irc2ir (); fill_prefetch_2 (); printf ("\tgoto %s;\n", endlabelstr); need_endlabel = 1; } else { if (next_cpu_level < 1) next_cpu_level = 1; } } genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA | GF_NOREFILL); addcycles000 (2); printf ("\tif (!cctrue (%d)) goto didnt_jump;\n", curi->cc); if (using_exception_3) { printf ("\tif (src & 1) {\n"); //AO extra printf ("\t\texception3i (opcode, m68k_getpc () + %d, m68k_getpc () + 2 + (uae_s32)src);\n", m68k_pc_offset); //printf ("\t\texception3i (opcode, m68k_getpc () + 2, m68k_getpc () + 2 + (uae_s32)src);\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t}\n"); need_endlabel = 1; } if (using_prefetch) { incpc ("(uae_s32)src + 2"); fill_prefetch_full (); if (using_ce) printf ("\treturn;\n"); else printf ("\treturn 10 * CYCLE_UNIT / 2;\n"); } else { incpc ("(uae_s32)src + 2"); returncycles ("\t", 10); } printf ("didnt_jump:;\n"); need_endlabel = 1; sync_m68k_pc (); if (curi->size == sz_byte) { addcycles000 (2); irc2ir (); fill_prefetch_2 (); } else if (curi->size == sz_word) { addcycles000 (2); fill_prefetch_full (); } else { fill_prefetch_full (); } insn_n_cycles = curi->size == sz_byte ? 8 : 12; break; case i_LEA: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0, GF_AA); genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0, GF_AA); if (curi->smode == Ad8r || curi->smode == PC8r) addcycles000 (2); fill_prefetch_next (); if (curi->smode == Ad8r || curi->smode == PC8r) addcycles000 (2); genastore ("srca", curi->dmode, "dstreg", curi->size, "dst"); break; case i_PEA: genamode (curi->smode, "srcreg", curi->size, "src", 0, 0, GF_AA); //AO extra: 3 genamode (Apdi, "7", sz_long, "dst", 3, 0, GF_AA); if (curi->smode == Ad8r || curi->smode == PC8r) addcycles000 (2); if (!(curi->smode == absw || curi->smode == absl)) fill_prefetch_next (); if (curi->smode == Ad8r || curi->smode == PC8r) addcycles000 (2); genastore ("srca", Apdi, "7", sz_long, "dst"); if ((curi->smode == absw || curi->smode == absl)) fill_prefetch_next (); break; case i_DBcc: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, GF_AA | GF_NOREFILL); genamode (curi->dmode, "dstreg", curi->size, "offs", 1, 0, GF_AA | GF_NOREFILL); printf ("\tuaecptr oldpc = m68k_getpc ();\n"); addcycles000 (2); printf ("\tif (!cctrue (%d)) {\n", curi->cc); incpc ("(uae_s32)offs + 2"); //AO extra: comment out //printf ("\t"); fill_prefetch_1 (0); printf ("\t"); genastore ("(src - 1)", curi->smode, "srcreg", curi->size, "src"); printf ("\t\tif (src) {\n"); addcycles_ce020 (4); if (using_exception_3) { printf ("\t\t\tif (offs & 1) {\n"); //AO extra: (m68k_getpc () + 2 + (uae_s32)offs + 2) -> m68k_getpc (); (m68k_getpc () + 2) -> oldpc printf ("\t\t\t\texception3i (opcode, oldpc + 2, m68k_getpc ());\n"); printf ("\t\t\t\tgoto %s;\n", endlabelstr); printf ("\t\t\t}\n"); need_endlabel = 1; } irc2ir (); fill_prefetch_1 (2); returncycles ("\t\t\t", 12); if (using_ce) printf ("\t\t\treturn;\n"); printf ("\t\t}\n"); addcycles_ce020 (8); printf ("\t} else {\n"); addcycles000_2 ("\t\t", 2); addcycles_ce020 (4); printf ("\t}\n"); setpc ("oldpc + %d", m68k_pc_offset); m68k_pc_offset = 0; fill_prefetch_full (); insn_n_cycles = 12; need_endlabel = 1; break; case i_Scc: genamode (curi->smode, "srcreg", curi->size, "src", cpu_level == 0 ? 1 : 2, 0, 0); start_brace (); fill_prefetch_next(); start_brace (); printf ("\tint val = cctrue (%d) ? 0xff : 0;\n", curi->cc); if (using_ce) { printf ("\tint cycles = 0;\n"); if (isreg (curi->smode)) printf ("\tif (val) cycles += 2;\n"); addcycles000_3 ("\t"); } 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, 0); genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0); printf ("\tCLEAR_CZNV ();\n"); printf ("\tif (src == 0) {\n"); if (cpu_level > 0) { /* 68020 sets V when dividing by zero and N if dst is negative * 68000 clears both */ printf("\t\tSET_VFLG (1);\n"); printf("\t\tif (dst < 0) SET_NFLG (1);\n"); } incpc ("%d", m68k_pc_offset); printf ("\t\tException (5, oldpc);\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t} else {\n"); printf ("\t\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n"); printf ("\t\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n"); fill_prefetch_next (); if (using_ce) { start_brace (); printf ("\t\tint cycles = (getDivu68kCycles((uae_u32)dst, (uae_u16)src));\n"); addcycles000_3 ("\t\t"); } else if (using_ce020) { addcycles_ce020 (36); } /* The N flag appears to be set each time there is an overflow. * Weird. but 68020 only sets N when dst is negative.. */ printf ("\t\tif (newv > 0xffff) {\n"); printf ("\t\t\tSET_VFLG (1);\n"); #ifdef UNDEF68020 if (cpu_level >= 2) printf ("\t\t\tif (currprefs.cpu_level == 0 || dst < 0) SET_NFLG (®s, 1);\n"); else /* ??? some 68000 revisions may not set NFLG when overflow happens.. */ #endif printf ("\t\t\tSET_NFLG (1);\n"); printf ("\t\t} else {\n"); printf ("\t\t"); genflags (flag_logical, sz_word, "newv", "", ""); printf ("\t\t\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n"); printf ("\t\t"); genastore ("newv", curi->dmode, "dstreg", sz_long, "dst"); printf ("\t\t}\n"); sync_m68k_pc (); printf ("\t}\n"); count_ncycles++; insn_n_cycles += 136 - (136 - 76) / 2; /* average */ need_endlabel = 1; break; case i_DIVS: printf ("\tuaecptr oldpc = m68k_getpc ();\n"); genamode (curi->smode, "srcreg", sz_word, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", sz_long, "dst", 1, 0, 0); printf ("\tCLEAR_CZNV ();\n"); printf ("\tif (src == 0) {\n"); if (cpu_level > 0) { /* 68020 sets V when dividing by zero. Z is also set. * 68000 clears both */ printf("\t\tSET_VFLG (1);\n"); printf("\t\tSET_ZFLG (1);\n"); } incpc ("%d", m68k_pc_offset); printf ("\t\tException (5, oldpc);\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t} else {\n"); printf ("\t\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n"); printf ("\t\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n"); fill_prefetch_next (); if (using_ce) { start_brace (); printf ("\t\tint cycles = (getDivs68kCycles((uae_s32)dst, (uae_s16)src));\n"); addcycles000_3 ("\t\t"); } else if (using_ce020) { addcycles_ce020 (46); } printf ("\t\tif ((newv & 0xffff8000) != 0 && (newv & 0xffff8000) != 0xffff8000) {\n"); printf ("\t\t\tSET_VFLG (1);\n"); #ifdef UNDEF68020 if (cpu_level > 0) printf ("\t\t\tif (currprefs.cpu_level == 0) SET_NFLG (®s, 1);\n"); else #endif printf ("\t\t\tSET_NFLG (1);\n"); printf ("\t\t} else {\n"); printf ("\t\t\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n"); genflags (flag_logical, sz_word, "newv", "", ""); printf ("\t\t\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n"); printf ("\t\t"); genastore ("newv", curi->dmode, "dstreg", sz_long, "dst"); printf ("\t\t}\n"); sync_m68k_pc (); printf ("\t}\n"); count_ncycles++; insn_n_cycles += 156 - (156 - 120) / 2; /* average */ need_endlabel = 1; break; case i_MULU: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0, 0); fill_prefetch_next(); start_brace (); printf ("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n"); if (using_ce) printf ("\tint cycles = 38 - 4, bits;\n"); genflags (flag_logical, sz_long, "newv", "", ""); if (using_ce) { printf ("\tfor(bits = 0; bits < 16 && src; bits++, src >>= 1)\n"); printf ("\t\tif (src & 1) cycles += 2;\n"); addcycles000_3 ("\t"); } else if (using_ce020) { addcycles_ce020 (20); } genastore ("newv", curi->dmode, "dstreg", sz_long, "dst"); sync_m68k_pc (); count_cycles += 38 - 4; count_ncycles++; insn_n_cycles += (70 - 38) / 2 + 38; /* average */ break; case i_MULS: genamode (curi->smode, "srcreg", sz_word, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", sz_word, "dst", 1, 0, 0); fill_prefetch_next(); start_brace (); printf ("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n"); if (using_ce) { printf ("\tint cycles = 38 - 4, bits;\n"); printf ("\tuae_u32 usrc;\n"); } genflags (flag_logical, sz_long, "newv", "", ""); if (using_ce) { printf ("\tusrc = ((uae_u32)src) << 1;\n"); printf ("\tfor(bits = 0; bits < 16 && usrc; bits++, usrc >>= 1)\n"); printf ("\t\tif ((usrc & 3) == 1 || (usrc & 3) == 2) cycles += 2;\n"); addcycles000_3 ("\t"); } else if (using_ce020) { addcycles_ce020 (20); } genastore ("newv", curi->dmode, "dstreg", sz_long, "dst"); count_cycles += 38 - 4; count_ncycles++; insn_n_cycles += (70 - 38) / 2 + 38; /* average */ break; case i_CHK: printf ("\tuaecptr oldpc = m68k_getpc ();\n"); genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); sync_m68k_pc (); addcycles000 (4); printf ("\tif (dst > src) {\n"); printf ("\t\tSET_NFLG (0);\n"); printf ("\t\tException (6, oldpc);\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t}\n"); addcycles000 (2); printf ("\tif ((uae_s32)dst < 0) {\n"); printf ("\t\tSET_NFLG (1);\n"); printf ("\t\tException (6, oldpc);\n"); printf ("\t\tgoto %s;\n", endlabelstr); printf ("\t}\n"); fill_prefetch_next (); need_endlabel = 1; break; case i_CHK2: printf ("\tuaecptr oldpc = m68k_getpc ();\n"); genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0, 0); fill_prefetch_0 (); printf ("\t{uae_s32 upper,lower,reg = regs.regs[(extra >> 12) & 15];\n"); switch (curi->size) { case sz_byte: printf ("\tlower = (uae_s32)(uae_s8)%s (dsta); upper = (uae_s32)(uae_s8)%s (dsta + 1);\n", srcb, srcb); printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s8)reg;\n"); break; case sz_word: printf ("\tlower = (uae_s32)(uae_s16)%s (dsta); upper = (uae_s32)(uae_s16)%s (dsta + 2);\n", srcw, srcw); printf ("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s16)reg;\n"); break; case sz_long: printf ("\tlower = %s (dsta); upper = %s (dsta + 4);\n", srcl, srcl); break; default: abort (); } printf ("\tSET_ZFLG (upper == reg || lower == reg);\n"); printf ("\tSET_CFLG_ALWAYS (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, 0); genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0); fill_prefetch_next(); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tuae_u32 sign = (%s & val) >> %d;\n", cmask (curi->size), bit_size (curi->size) - 1); printf ("\tint ccnt = cnt & 63;\n"); printf ("\tcnt &= 63;\n"); printf ("\tCLEAR_CZNV ();\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 (1); if (source_is_imm1_8 (curi)) printf ("\t} else {\n"); else printf ("\t} else if (cnt > 0) {\n"); printf ("\t\tval >>= cnt - 1;\n"); printf ("\t\tSET_CFLG (val & 1);\n"); duplicate_carry (1); printf ("\t\tval >>= 1;\n"); printf ("\t\tval |= (%s << (%d - cnt)) & (uae_u32)-sign;\n", bit_mask (curi->size), bit_size (curi->size)); printf ("\t\tval &= %s;\n", bit_mask (curi->size)); printf ("\t}\n"); genflags (flag_logical_noclobber, curi->size, "val", "", ""); shift_ce (curi->dmode, curi->size); genastore ("val", curi->dmode, "dstreg", curi->size, "data"); break; case i_ASL: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0); fill_prefetch_next(); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tint ccnt = cnt & 63;\n"); printf ("\tcnt &= 63;\n"); printf ("\tCLEAR_CZNV ();\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 (1); printf ("\t\tval = 0;\n"); if (source_is_imm1_8 (curi)) printf ("\t} else {\n"); else printf ("\t} else if (cnt > 0) {\n"); printf ("\t\tuae_u32 mask = (%s << (%d - cnt)) & %s;\n", bit_mask (curi->size), bit_size (curi->size) - 1, bit_mask (curi->size)); printf ("\t\tSET_VFLG ((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 (1); printf ("\t\tval <<= 1;\n"); printf ("\t\tval &= %s;\n", bit_mask (curi->size)); printf ("\t}\n"); genflags (flag_logical_noclobber, curi->size, "val", "", ""); shift_ce (curi->dmode, curi->size); genastore ("val", curi->dmode, "dstreg", curi->size, "data"); break; case i_LSR: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0); fill_prefetch_next(); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tint ccnt = cnt & 63;\n"); printf ("\tcnt &= 63;\n"); printf ("\tCLEAR_CZNV ();\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 (1); printf ("\t\tval = 0;\n"); if (source_is_imm1_8 (curi)) printf ("\t} else {\n"); else printf ("\t} else if (cnt > 0) {\n"); printf ("\t\tval >>= cnt - 1;\n"); printf ("\t\tSET_CFLG (val & 1);\n"); duplicate_carry (1); printf ("\t\tval >>= 1;\n"); printf ("\t}\n"); genflags (flag_logical_noclobber, curi->size, "val", "", ""); shift_ce (curi->dmode, curi->size); genastore ("val", curi->dmode, "dstreg", curi->size, "data"); break; case i_LSL: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0); fill_prefetch_next(); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tint ccnt = cnt & 63;\n"); printf ("\tcnt &= 63;\n"); printf ("\tCLEAR_CZNV ();\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 (1); printf ("\t\tval = 0;\n"); if (source_is_imm1_8 (curi)) printf ("\t} else {\n"); else printf ("\t} else if (cnt > 0) {\n"); printf ("\t\tval <<= (cnt - 1);\n"); printf ("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask (curi->size), bit_size (curi->size) - 1); duplicate_carry (1); printf ("\t\tval <<= 1;\n"); printf ("\tval &= %s;\n", bit_mask (curi->size)); printf ("\t}\n"); genflags (flag_logical_noclobber, curi->size, "val", "", ""); shift_ce (curi->dmode, curi->size); genastore ("val", curi->dmode, "dstreg", curi->size, "data"); break; case i_ROL: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tint ccnt = cnt & 63;\n"); printf ("\tcnt &= 63;\n"); printf ("\tCLEAR_CZNV ();\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", "", ""); shift_ce (curi->dmode, curi->size); genastore ("val", curi->dmode, "dstreg", curi->size, "data"); break; case i_ROR: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tint ccnt = cnt & 63;\n"); printf ("\tcnt &= 63;\n"); printf ("\tCLEAR_CZNV ();\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", "", ""); shift_ce (curi->dmode, curi->size); genastore ("val", curi->dmode, "dstreg", curi->size, "data"); break; case i_ROXL: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tint ccnt = cnt & 63;\n"); printf ("\tcnt &= 63;\n"); printf ("\tCLEAR_CZNV ();\n"); if (source_is_imm1_8 (curi)) printf ("{"); else { force_range_for_rox ("cnt", curi->size); printf ("\tif (cnt > 0) {\n"); } printf ("\tcnt--;\n"); printf ("\t{\n\tuae_u32 carry;\n"); printf ("\tuae_u32 loval = val >> (%d - cnt);\n", bit_size (curi->size) - 1); printf ("\tcarry = loval & 1;\n"); printf ("\tval = (((val << 1) | GET_XFLG ()) << 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", "", ""); shift_ce (curi->dmode, curi->size); genastore ("val", curi->dmode, "dstreg", curi->size, "data"); break; case i_ROXR: genamode (curi->smode, "srcreg", curi->size, "cnt", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tint ccnt = cnt & 63;\n"); printf ("\tcnt &= 63;\n"); printf ("\tCLEAR_CZNV ();\n"); if (source_is_imm1_8 (curi)) printf ("{"); else { force_range_for_rox ("cnt", curi->size); printf ("\tif (cnt > 0) {\n"); } printf ("\tcnt--;\n"); printf ("\t{\n\tuae_u32 carry;\n"); printf ("\tuae_u32 hival = (val << 1) | GET_XFLG ();\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", "", ""); shift_ce (curi->dmode, curi->size); genastore ("val", curi->dmode, "dstreg", curi->size, "data"); break; case i_ASRW: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size)); printf ("\tuae_u32 cflg = val & 1;\n"); printf ("\tval = (val >> 1) | sign;\n"); genflags (flag_logical, curi->size, "val", "", ""); printf ("\tSET_CFLG (cflg);\n"); duplicate_carry (0); genastore ("val", curi->smode, "srcreg", curi->size, "data"); break; case i_ASLW: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tuae_u32 sign = %s & val;\n", cmask (curi->size)); printf ("\tuae_u32 sign2;\n"); printf ("\tval <<= 1;\n"); genflags (flag_logical, curi->size, "val", "", ""); printf ("\tsign2 = %s & val;\n", cmask (curi->size)); printf ("\tSET_CFLG (sign != 0);\n"); duplicate_carry (0); 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, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u32 val = (uae_u8)data;\n"); break; case sz_word: printf ("\tuae_u32 val = (uae_u16)data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tuae_u32 carry = val & 1;\n"); printf ("\tval >>= 1;\n"); genflags (flag_logical, curi->size, "val", "", ""); printf ("\tSET_CFLG (carry);\n"); duplicate_carry (0); genastore ("val", curi->smode, "srcreg", curi->size, "data"); break; case i_LSLW: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u8 val = data;\n"); break; case sz_word: printf ("\tuae_u16 val = data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size)); printf ("\tval <<= 1;\n"); genflags (flag_logical, curi->size, "val", "", ""); printf ("\tSET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1); duplicate_carry (0); genastore ("val", curi->smode, "srcreg", curi->size, "data"); break; case i_ROLW: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u8 val = data;\n"); break; case sz_word: printf ("\tuae_u16 val = data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size)); printf ("\tval <<= 1;\n"); printf ("\tif (carry) val |= 1;\n"); genflags (flag_logical, curi->size, "val", "", ""); printf ("\tSET_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, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u8 val = data;\n"); break; case sz_word: printf ("\tuae_u16 val = data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tuae_u32 carry = val & 1;\n"); printf ("\tval >>= 1;\n"); printf ("\tif (carry) val |= %s;\n", cmask (curi->size)); genflags (flag_logical, curi->size, "val", "", ""); printf ("\tSET_CFLG (carry);\n"); genastore ("val", curi->smode, "srcreg", curi->size, "data"); break; case i_ROXLW: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u8 val = data;\n"); break; case sz_word: printf ("\tuae_u16 val = data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tuae_u32 carry = val & %s;\n", cmask (curi->size)); printf ("\tval <<= 1;\n"); printf ("\tif (GET_XFLG ()) val |= 1;\n"); genflags (flag_logical, curi->size, "val", "", ""); printf ("\tSET_CFLG (carry >> %d);\n", bit_size (curi->size) - 1); duplicate_carry (0); genastore ("val", curi->smode, "srcreg", curi->size, "data"); break; case i_ROXRW: genamode (curi->smode, "srcreg", curi->size, "data", 1, 0, 0); fill_prefetch_next (); start_brace (); switch (curi->size) { case sz_byte: printf ("\tuae_u8 val = data;\n"); break; case sz_word: printf ("\tuae_u16 val = data;\n"); break; case sz_long: printf ("\tuae_u32 val = data;\n"); break; default: abort (); } printf ("\tuae_u32 carry = val & 1;\n"); printf ("\tval >>= 1;\n"); printf ("\tif (GET_XFLG ()) val |= %s;\n", cmask (curi->size)); genflags (flag_logical, curi->size, "val", "", ""); printf ("\tSET_CFLG (carry);\n"); duplicate_carry (0); genastore ("val", curi->smode, "srcreg", curi->size, "data"); break; case i_MOVEC2: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); fill_prefetch_next (); start_brace (); printf ("\tint regno = (src >> 12) & 15;\n"); printf ("\tuae_u32 *regp = regs.regs + regno;\n"); printf ("\tif (! m68k_movec2(src & 0xFFF, regp)) goto %s;\n", endlabelstr); break; case i_MOVE2C: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); fill_prefetch_next (); start_brace (); printf ("\tint regno = (src >> 12) & 15;\n"); printf ("\tuae_u32 *regp = regs.regs + regno;\n"); printf ("\tif (! m68k_move2c(src & 0xFFF, regp)) goto %s;\n", endlabelstr); break; case i_CAS: { int old_brace_level; genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); fill_prefetch_0 (); start_brace (); printf ("\tint ru = (src >> 6) & 7;\n"); printf ("\tint rc = src & 7;\n"); genflags (flag_cmp, curi->size, "newv", "m68k_dreg (regs, rc)", "dst"); printf ("\tif (GET_ZFLG ())"); old_brace_level = n_braces; start_brace (); genastore ("(m68k_dreg (regs, ru))", curi->dmode, "dstreg", curi->size, "dst"); pop_braces (old_brace_level); printf ("else"); start_brace (); printf ("m68k_dreg (regs, rc) = dst;\n"); pop_braces (old_brace_level); } break; case i_CAS2: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0); printf ("\tuae_u32 rn1 = regs.regs[(extra >> 28) & 15];\n"); printf ("\tuae_u32 rn2 = regs.regs[(extra >> 12) & 15];\n"); if (curi->size == sz_word) { int old_brace_level = n_braces; printf ("\tuae_u16 dst1 = %s (rn1), dst2 = %s (rn2);\n", srcw, srcw); 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 ("\t%s (rn1, m68k_dreg (regs, (extra >> 22) & 7));\n", dstw); printf ("\t%s (rn1, m68k_dreg (regs, (extra >> 6) & 7));\n", dstw); 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 = %s (rn1), dst2 = %s (rn2);\n", srcl, srcl); 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 ("\t%s (rn1, m68k_dreg (regs, (extra >> 22) & 7));\n", dstl); printf ("\t%s (rn1, m68k_dreg (regs, (extra >> 6) & 7));\n", dstl); 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 when using_mmu == false */ { int old_brace_level; genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0); printf ("\tif (extra & 0x800)\n"); { int old_m68k_pc_offset = m68k_pc_offset; old_brace_level = n_braces; start_brace (); printf ("\tuae_u32 src = regs.regs[(extra >> 12) & 15];\n"); genamode (curi->dmode, "dstreg", curi->size, "dst", 2, 0, 0); genastore_fc ("src", curi->dmode, "dstreg", curi->size, "dst"); pop_braces (old_brace_level); m68k_pc_offset = old_m68k_pc_offset; } printf ("else"); { start_brace (); genamode (curi->dmode, "dstreg", curi->size, "src", 1, 0, GF_FC); 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"); sync_m68k_pc (); 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, 0); fill_prefetch_0 (); printf ("\tif (cctrue (%d)) { Exception (7, m68k_getpc ()); goto %s; }\n", curi->cc, endlabelstr); need_endlabel = 1; break; case i_DIVL: printf ("\tuaecptr oldpc = m68k_getpc ();\n"); genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); if (using_ce020) { addcycles_ce020 (70); } sync_m68k_pc (); printf ("\tm68k_divl(opcode, dst, extra, oldpc);\n"); break; case i_MULL: genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0); genamode (curi->dmode, "dstreg", curi->size, "dst", 1, 0, 0); if (using_ce020) { addcycles_ce020 (40); } 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: { char *getb, *putb; if (using_mmu) { getb = "get_bitfield_040mmu"; putb = "put_bitfield_040mmu"; } else if (using_ce020) { getb = "get_bitfield_020ce"; putb = "put_bitfield_020ce"; } else { getb = "get_bitfield"; putb = "put_bitfield"; } genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0); genamode (curi->dmode, "dstreg", sz_long, "dst", 2, 0, 0); start_brace (); printf ("\tuae_u32 bdata[2];\n"); 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);\n"); printf ("\toffset &= 0x1f;\n"); printf ("\ttmp = (tmp << offset) | (tmp >> (32 - offset));\n"); printf ("\tbdata[0] = tmp & ((1 << (32 - width)) - 1);\n"); } else { printf ("\tuae_u32 tmp;\n"); printf ("\tdsta += offset >> 3;\n"); printf ("\ttmp = %s (dsta, bdata, offset, width);\n", getb); } printf ("\tSET_NFLG_ALWAYS (((uae_s32)tmp) < 0 ? 1 : 0);\n"); if (curi->mnemo == i_BFEXTS) printf ("\ttmp = (uae_s32)tmp >> (32 - width);\n"); else printf ("\ttmp >>= (32 - width);\n"); printf ("\tSET_ZFLG (tmp == 0); SET_VFLG (0); SET_CFLG (0);\n"); switch (curi->mnemo) { case i_BFTST: break; case i_BFEXTU: case i_BFEXTS: printf ("\tm68k_dreg (regs, (extra >> 12) & 7) = tmp;\n"); break; case i_BFCHG: printf ("\ttmp = tmp ^ (0xffffffffu >> (32 - width));\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 = 0xffffffffu >> (32 - width);\n"); break; case i_BFINS: printf ("\ttmp = m68k_dreg (regs, (extra >> 12) & 7);\n"); printf ("\ttmp = tmp & (0xffffffffu >> (32 - width));\n"); printf ("\tSET_NFLG (tmp & (1 << (width - 1)) ? 1 : 0);\n"); printf ("\tSET_ZFLG (tmp == 0);\n"); break; default: break; } if (curi->mnemo == i_BFCHG || curi->mnemo == i_BFCLR || curi->mnemo == i_BFSET || curi->mnemo == i_BFINS) { if (curi->dmode == Dreg) { printf ("\ttmp = bdata[0] | (tmp << (32 - width));\n"); printf ("\tm68k_dreg(regs, dstreg) = (tmp >> offset) | (tmp << (32 - offset));\n"); } else { printf ("\t%s(dsta, bdata, tmp, offset, width);\n", putb); } } } break; case i_PACK: if (curi->smode == Dreg) { printf ("\tuae_u16 val = m68k_dreg (regs, srcreg) + %s;\n", gen_nextiword (0)); printf ("\tm68k_dreg (regs, dstreg) = (m68k_dreg (regs, dstreg) & 0xffffff00) | ((val >> 4) & 0xf0) | (val & 0xf);\n"); } else { printf ("\tuae_u16 val;\n"); printf ("\tm68k_areg (regs, srcreg) -= areg_byteinc[srcreg];\n"); printf ("\tval = (uae_u16)%s (m68k_areg (regs, srcreg));\n", srcb); printf ("\tm68k_areg (regs, srcreg) -= areg_byteinc[srcreg];\n"); printf ("\tval = (val | ((uae_u16)%s (m68k_areg (regs, srcreg)) << 8)) + %s;\n", srcb, gen_nextiword (0)); printf ("\tm68k_areg (regs, dstreg) -= areg_byteinc[dstreg];\n"); gen_set_fault_pc (); printf ("\t%s (m68k_areg (regs, dstreg),((val >> 4) & 0xf0) | (val & 0xf));\n", dstb); } break; case i_UNPK: if (curi->smode == Dreg) { printf ("\tuae_u16 val = m68k_dreg (regs, srcreg);\n"); printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword (0)); printf ("\tm68k_dreg (regs, dstreg) = (m68k_dreg (regs, dstreg) & 0xffff0000) | (val & 0xffff);\n"); } else { printf ("\tuae_u16 val;\n"); printf ("\tm68k_areg (regs, srcreg) -= areg_byteinc[srcreg];\n"); printf ("\tval = (uae_u16)%s (m68k_areg (regs, srcreg));\n", srcb); printf ("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword (0)); if (cpu_level >= 2) { printf ("\tm68k_areg (regs, dstreg) -= 2 * areg_byteinc[dstreg];\n"); printf ("\t%s (m68k_areg (regs, dstreg) + areg_byteinc[dstreg], val);\n", dstb); printf ("\t%s (m68k_areg (regs, dstreg), val >> 8);\n", dstb); } else { printf ("\tm68k_areg (regs, dstreg) -= areg_byteinc[dstreg];\n"); printf ("\t%s (m68k_areg (regs, dstreg),val);\n", dstb); printf ("\tm68k_areg (regs, dstreg) -= areg_byteinc[dstreg];\n"); gen_set_fault_pc (); printf ("\t%s (m68k_areg (regs, dstreg),val >> 8);\n", dstb); } } break; case i_TAS: genamode (curi->smode, "srcreg", curi->size, "src", 1, 0, 0); genflags (flag_logical, curi->size, "src", "", ""); if (!isreg (curi->smode)) addcycles000 (2); fill_prefetch_next (); printf ("\tsrc |= 0x80;\n"); if (cpu_level >= 2 || curi->smode == Dreg || !using_ce) { if (next_cpu_level < 2) next_cpu_level = 2 - 1; genastore ("src", curi->smode, "srcreg", curi->size, "src"); } else { printf ("\tif (!is_cycle_ce ()) {\n"); genastore ("src", curi->smode, "srcreg", curi->size, "src"); printf ("\t} else {\n"); printf ("\t\tdo_cycles_ce000 (4);\n"); printf ("\t}\n"); } break; case i_FPP: fpulimit(); genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0); sync_m68k_pc (); printf ("\tfpuop_arithmetic(opcode, extra);\n"); break; case i_FDBcc: fpulimit(); genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0); sync_m68k_pc (); printf ("\tfpuop_dbcc (opcode, extra);\n"); break; case i_FScc: fpulimit(); genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0, 0); sync_m68k_pc (); printf ("\tfpuop_scc (opcode, extra);\n"); break; case i_FTRAPcc: fpulimit(); printf ("\tuaecptr oldpc = m68k_getpc ();\n"); printf ("\tuae_u16 extra = %s;\n", gen_nextiword (0)); if (curi->smode != am_unknown && curi->smode != am_illg) genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0, 0); sync_m68k_pc (); printf ("\tfpuop_trapcc (opcode, oldpc, extra);\n"); break; case i_FBcc: fpulimit(); sync_m68k_pc (); start_brace (); printf ("\tuaecptr pc = m68k_getpc ();\n"); genamode (curi->dmode, "srcreg", curi->size, "extra", 1, 0, 0); sync_m68k_pc (); printf ("\tfpuop_bcc (opcode, pc,extra);\n"); break; case i_FSAVE: fpulimit(); sync_m68k_pc (); printf ("\tfpuop_save (opcode);\n"); break; case i_FRESTORE: fpulimit(); sync_m68k_pc (); printf ("\tfpuop_restore (opcode);\n"); break; case i_CINVL: case i_CINVP: case i_CINVA: case i_CPUSHL: case i_CPUSHP: case i_CPUSHA: if (using_mmu) printf ("\tflush_mmu(m68k_areg (regs, opcode & 3), (opcode >> 6) & 3);\n"); printf ("\tif (opcode & 0x80)\n"); printf ("\t\tflush_icache(m68k_areg (regs, opcode & 3), (opcode >> 6) & 3);\n"); break; case i_MOVE16: { if ((opcode & 0xfff8) == 0xf620) { /* MOVE16 (Ax)+,(Ay)+ */ printf ("\tuae_u32 v1, v2, v3, v4;\n"); printf ("\tuaecptr mems = m68k_areg (regs, srcreg) & ~15, memd;\n"); printf ("\tdstreg = (%s >> 12) & 7;\n", gen_nextiword (0)); printf ("\tmemd = m68k_areg (regs, dstreg) & ~15;\n"); printf ("\tv1 = %s (mems);\n", srcl); printf ("\tv2 = %s (mems + 4);\n", srcl); printf ("\tv3 = %s (mems + 8);\n", srcl); printf ("\tv4 = %s (mems + 12);\n", srcl); printf ("\t%s (memd , v1);\n", dstl); printf ("\t%s (memd + 4, v2);\n", dstl); printf ("\t%s (memd + 8, v3);\n", dstl); printf ("\t%s (memd + 12, v4);\n", dstl); printf ("\tif (srcreg != dstreg)\n"); printf ("\t\tm68k_areg (regs, srcreg) += 16;\n"); printf ("\tm68k_areg (regs, dstreg) += 16;\n"); } else { /* Other variants */ printf ("\tuae_u32 v1, v2, v3, v4;\n"); genamode (curi->smode, "srcreg", curi->size, "mems", 0, 2, 0); genamode (curi->dmode, "dstreg", curi->size, "memd", 0, 2, 0); printf ("\tmemsa &= ~15;\n"); printf ("\tmemda &= ~15;\n"); printf ("\tv1 = %s (memsa);\n", srcl); printf ("\tv2 = %s (memsa + 4);\n", srcl); printf ("\tv3 = %s (memsa + 8);\n", srcl); printf ("\tv4 = %s (memsa + 12);\n", srcl); printf ("\t%s (memda , v1);\n", dstl); printf ("\t%s (memda + 4, v2);\n", dstl); printf ("\t%s (memda + 8, v3);\n", dstl); printf ("\t%s (memda + 12, v4);\n", dstl); 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_PFLUSHN: case i_PFLUSH: case i_PFLUSHAN: case i_PFLUSHA: case i_PLPAR: case i_PLPAW: case i_PTESTR: case i_PTESTW: sync_m68k_pc (); printf ("\tmmu_op (opcode, 0);\n"); break; case i_MMUOP030: printf ("\tuaecptr pc = m68k_getpc ();\n"); printf ("\tuae_u16 extra = get_word (pc + 2);\n"); m68k_pc_offset += 2; sync_m68k_pc (); if (curi->smode == Areg || curi->smode == Dreg) printf("\tuae_u16 extraa = 0;\n"); else genamode (curi->smode, "srcreg", curi->size, "extra", 0, 0, 0); sync_m68k_pc (); printf ("\tmmu_op30 (pc, opcode, extra, extraa);\n"); break; default: abort (); break; } finish_braces (); if (limit_braces) { printf ("\n#endif\n"); n_braces = limit_braces; limit_braces = 0; finish_braces (); } if (did_prefetch >= 0) fill_prefetch_finish (); if (!count_cycles) addcycles_ce020 (2); sync_m68k_pc (); did_prefetch = 0; } static void generate_includes (FILE * f) { //AO68000 fprintf(f, "#include \"ao.h\"\n"); /// fprintf (f, "#include \"sysconfig.h\"\n"); /// fprintf (f, "#include \"sysdeps.h\"\n"); /// fprintf (f, "#include \"options.h\"\n"); // fprintf (f, "#include \"memory.h\"\n"); /// fprintf (f, "#include \"custom.h\"\n"); /// fprintf (f, "#include \"events.h\"\n"); /// fprintf (f, "#include \"newcpu.h\"\n"); /// fprintf (f, "#include \"cpu_prefetch.h\"\n"); fprintf (f, "#include \"cputbl.h\"\n"); /// fprintf (f, "#include \"cpummu.h\"\n"); //AO68000 end fprintf (f, "#define CPUFUNC(x) x##_ff\n" "#define SET_CFLG_ALWAYS(x) SET_CFLG(x)\n" "#define SET_NFLG_ALWAYS(x) SET_NFLG(x)\n" "#ifdef NOFLAGS\n" "#include \"noflags.h\"\n" "#endif\n"); } static int postfix; static char *decodeEA (amodes mode, wordsizes size) { static char buffer[80]; buffer[0] = 0; switch (mode){ case Dreg: strcpy (buffer,"Dn"); break; case Areg: strcpy (buffer,"An"); break; case Aind: strcpy (buffer,"(An)"); break; case Aipi: strcpy (buffer,"(An)+"); break; case Apdi: strcpy (buffer,"-(An)"); break; case Ad16: strcpy (buffer,"(d16,An)"); break; case Ad8r: strcpy (buffer,"(d8,An,Xn)"); break; case PC16: strcpy (buffer,"(d16,PC)"); break; case PC8r: strcpy (buffer,"(d8,PC,Xn)"); break; case absw: strcpy (buffer,"(xxx).W"); break; case absl: strcpy (buffer,"(xxx).L"); break; case imm: switch (size){ case sz_byte: strcpy (buffer,"#<data>.B"); break; case sz_word: strcpy (buffer,"#<data>.W"); break; case sz_long: strcpy (buffer,"#<data>.L"); break; default: break; } break; case imm0: strcpy (buffer,"#<data>.B"); break; case imm1: strcpy (buffer,"#<data>.W"); break; case imm2: strcpy (buffer,"#<data>.L"); break; case immi: strcpy (buffer,"#<data>"); break; default: break; } return buffer; } static char *outopcode (int opcode) { static char out[100]; struct instr *ins; int i; ins = &table68k[opcode]; for (i = 0; lookuptab[i].name[0]; i++) { if (ins->mnemo == lookuptab[i].mnemo) break; } { char *s = ua (lookuptab[i].name); strcpy (out, s); xfree (s); } if (ins->smode == immi) strcat (out, "Q"); if (ins->size == sz_byte) strcat (out,".B"); if (ins->size == sz_word) strcat (out,".W"); if (ins->size == sz_long) strcat (out,".L"); strcat (out," "); if (ins->suse) strcat (out, decodeEA (ins->smode, ins->size)); if (ins->duse) { if (ins->suse) strcat (out,","); strcat (out, decodeEA (ins->dmode, ins->size)); } return out; } static void generate_one_opcode (int rp) { int idx; uae_u16 smsk, dmsk; long int opcode = opcode_map[rp]; int i68000 = table68k[opcode].clev > 0; if (table68k[opcode].mnemo == i_ILLG || table68k[opcode].clev > cpu_level) return; for (idx = 0; lookuptab[idx].name[0]; idx++) { if (table68k[opcode].mnemo == lookuptab[idx].mnemo) break; } if (table68k[opcode].handler != -1) return; if (opcode_next_clev[rp] != cpu_level) { char *name = ua (lookuptab[idx].name); if (generate_stbl) fprintf (stblfile, "{ %sCPUFUNC(op_%04x_%d), %d }, /* %s */\n", (using_ce || using_ce020) ? "(cpuop_func*)" : "", opcode, opcode_last_postfix[rp], opcode, name); xfree (name); return; } fprintf (headerfile, "extern %s op_%04lx_%d_nf;\n", (using_ce || using_ce020) ? "cpuop_func_ce" : "cpuop_func", opcode, postfix); fprintf (headerfile, "extern %s op_%04lx_%d_ff;\n", (using_ce || using_ce020) ? "cpuop_func_ce" : "cpuop_func", opcode, postfix); printf ("/* %s */\n", outopcode (opcode)); if (i68000) printf("#ifndef CPUEMU_68000_ONLY\n"); printf ("%s REGPARAM2 CPUFUNC(op_%04lx_%d)(uae_u32 opcode)\n{\n", (using_ce || using_ce020) ? "void" : "unsigned long", opcode, postfix); switch (table68k[opcode].stype) { case 0: smsk = 7; break; case 1: smsk = 255; break; case 2: smsk = 15; break; case 3: smsk = 7; break; case 4: smsk = 7; break; case 5: smsk = 63; break; case 7: smsk = 3; break; default: abort (); } dmsk = 7; next_cpu_level = -1; if (table68k[opcode].suse && table68k[opcode].smode != imm && table68k[opcode].smode != imm0 && table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2 && table68k[opcode].smode != absw && table68k[opcode].smode != absl && table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16) { if (table68k[opcode].spos == -1) { if (((int) table68k[opcode].sreg) >= 128) printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].sreg); else printf ("\tuae_u32 srcreg = %d;\n", (int) table68k[opcode].sreg); } else { char source[100]; int pos = table68k[opcode].spos; if (pos) sprintf (source, "((opcode >> %d) & %d)", pos, smsk); else sprintf (source, "(opcode & %d)", smsk); if (table68k[opcode].stype == 3) printf ("\tuae_u32 srcreg = imm8_table[%s];\n", source); else if (table68k[opcode].stype == 1) printf ("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source); else printf ("\tuae_u32 srcreg = %s;\n", source); } } if (table68k[opcode].duse /* Yes, the dmode can be imm, in case of LINK or DBcc */ && table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0 && table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2 && table68k[opcode].dmode != absw && table68k[opcode].dmode != absl) { if (table68k[opcode].dpos == -1) { if (((int) table68k[opcode].dreg) >= 128) printf ("\tuae_u32 dstreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].dreg); else printf ("\tuae_u32 dstreg = %d;\n", (int) table68k[opcode].dreg); } else { int pos = table68k[opcode].dpos; if (pos) printf ("\tuae_u32 dstreg = (opcode >> %d) & %d;\n", pos, dmsk); else printf ("\tuae_u32 dstreg = opcode & %d;\n", dmsk); } } need_endlabel = 0; endlabelno++; sprintf (endlabelstr, "endlabel%d", endlabelno); count_read = count_write = count_ncycles = count_cycles = 0; count_read_ea = count_write_ea = count_cycles_ea = 0; gen_opcode (opcode); if (need_endlabel) printf ("%s: ;\n", endlabelstr); returncycles ("", insn_n_cycles); printf ("}"); if (using_ce || using_prefetch) { if (count_read + count_write + count_cycles == 0) count_cycles = 4; printf (" /* %d%s (%d/%d)", (count_read + count_write) * 4 + count_cycles, count_ncycles ? "+" : "", count_read, count_write); printf (" */\n"); } else { printf("\n"); } printf ("\n"); if (i68000) printf("#endif\n"); opcode_next_clev[rp] = next_cpu_level; opcode_last_postfix[rp] = postfix; if (generate_stbl) { char *name = ua (lookuptab[idx].name); if (i68000) fprintf (stblfile, "#ifndef CPUEMU_68000_ONLY\n"); fprintf (stblfile, "{ %sCPUFUNC(op_%04x_%d), %d }, /* %s */\n", (using_ce || using_ce020) ? "(cpuop_func*)" : "", opcode, postfix, opcode, name); if (i68000) fprintf (stblfile, "#endif\n"); xfree (name); } } static void generate_func (void) { int j, rp; /* sam: this is for people with low memory (eg. me :)) */ printf ("\n" "#if !defined(PART_1) && !defined(PART_2) && " "!defined(PART_3) && !defined(PART_4) && " "!defined(PART_5) && !defined(PART_6) && " "!defined(PART_7) && !defined(PART_8)" "\n" "#define PART_1 1\n" "#define PART_2 1\n" "#define PART_3 1\n" "#define PART_4 1\n" "#define PART_5 1\n" "#define PART_6 1\n" "#define PART_7 1\n" "#define PART_8 1\n" "#endif\n\n"); rp = 0; for(j = 1; j <= 8; ++j) { int k = (j * nr_cpuop_funcs) / 8; printf ("#ifdef PART_%d\n",j); for (; rp < k; rp++) generate_one_opcode (rp); printf ("#endif\n\n"); } if (generate_stbl) fprintf (stblfile, "{ 0, 0 }};\n"); } int main (int argc, char **argv) { int i, rp, postfix2; char fname[100]; read_table68k (); do_merges (); opcode_map = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs); opcode_last_postfix = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs); opcode_next_clev = (int *) xmalloc (sizeof (int) * nr_cpuop_funcs); counts = (unsigned long *) xmalloc (65536 * sizeof (unsigned long)); read_counts (); /* It would be a lot nicer to put all in one file (we'd also get rid of * cputbl.h that way), but cpuopti can't cope. That could be fixed, but * I don't dare to touch the 68k version. */ headerfile = fopen ("cputbl.h", "wb"); stblfile = fopen ("cpustbl.c", "wb"); generate_includes (stblfile); using_prefetch = 0; using_indirect = 0; using_exception_3 = 1; using_ce = 0; postfix2 = -1; for (i = 0; i < 32; i++) { postfix = i; if ((i >= 6 && i < 11) || (i > 12 && i < 20) || (i > 23 && i < 31)) continue; generate_stbl = 1; if (i == 0 || i == 11 || i == 12 || i == 20 || i == 31) { if (generate_stbl) fprintf (stblfile, "#ifdef CPUEMU_%d\n", postfix); postfix2 = postfix; sprintf (fname, "cpuemu_%d.c", postfix); freopen (fname, "wb", stdout); generate_includes (stdout); } using_mmu = 0; using_prefetch = 0; using_ce = 0; using_ce020 = 0; using_mmu = 0; cpu_level = 5 - i; if (i == 11 || i == 12) { cpu_level = 0; using_prefetch = 1; using_exception_3 = 1; if (i == 12) using_ce = 1; for (rp = 0; rp < nr_cpuop_funcs; rp++) opcode_next_clev[rp] = 0; } else if (i >= 20 && i < 30) { cpu_level = 25 - i; using_ce020 = 1; if (i == 20) read_counts (); } else if (i >= 31 && i < 40) { cpu_level = 4; using_mmu = 1; if (i == 31) read_counts (); for (rp = 0; rp < nr_cpuop_funcs; rp++) opcode_next_clev[rp] = 4; } if (generate_stbl) { if ((i > 0 && i < 10) || (i >= 20)) fprintf (stblfile, "#ifndef CPUEMU_68000_ONLY\n"); fprintf (stblfile, "const struct cputbl CPUFUNC(op_smalltbl_%d)[] = {\n", postfix); } generate_func (); if (generate_stbl) { if ((i > 0 && i < 10) || (i >= 20)) fprintf (stblfile, "#endif /* CPUEMU_68000_ONLY */\n"); if (postfix2 >= 0) fprintf (stblfile, "#endif /* CPUEMU_%d */\n", postfix2); } postfix2 = -1; } free (table68k); return 0; }
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