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/* |
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* UAE - The Un*x Amiga Emulator |
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* |
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* MC68000 emulation |
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* |
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* Copyright 1995 Bernd Schmidt |
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*/ |
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/* |
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* UAE - The Un*x Amiga Emulator |
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* |
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* MC68000 emulation |
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* |
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* Copyright 1995 Bernd Schmidt |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#ifndef NEWCPU_H |
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#define NEWCPU_H |
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|
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#define SPCFLAG_STOP 2 |
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#define SPCFLAG_DISK 4 |
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#define SPCFLAG_INT 8 |
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#define SPCFLAG_BRK 16 |
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#define SPCFLAG_EXTRA_CYCLES 32 |
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#define SPCFLAG_TRACE 64 |
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#define SPCFLAG_DOTRACE 128 |
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#define SPCFLAG_DOINT 256 |
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#define SPCFLAG_BLTNASTY 512 |
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#define SPCFLAG_EXEC 1024 |
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#define SPCFLAG_MODE_CHANGE 8192 |
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|
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#ifndef SET_CFLG |
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|
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#define SET_CFLG(x) (CFLG = (x)) |
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#define SET_NFLG(x) (NFLG = (x)) |
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#define SET_VFLG(x) (VFLG = (x)) |
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#define SET_ZFLG(x) (ZFLG = (x)) |
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#define SET_XFLG(x) (XFLG = (x)) |
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|
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#define GET_CFLG CFLG |
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#define GET_NFLG NFLG |
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#define GET_VFLG VFLG |
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#define GET_ZFLG ZFLG |
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#define GET_XFLG XFLG |
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|
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#define CLEAR_CZNV do { \ |
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SET_CFLG (0); \ |
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SET_ZFLG (0); \ |
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SET_NFLG (0); \ |
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SET_VFLG (0); \ |
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} while (0) |
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|
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#define COPY_CARRY (SET_XFLG (GET_CFLG)) |
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#ifndef FLIGHT_RECORDER |
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#define FLIGHT_RECORDER 0 |
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#endif |
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|
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#include "m68k.h" |
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#include "readcpu.h" |
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#include "spcflags.h" |
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|
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extern int areg_byteinc[]; |
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extern int imm8_table[]; |
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|
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extern int movem_index2[256]; |
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extern int movem_next[256]; |
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|
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extern int fpp_movem_index1[256]; |
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extern int fpp_movem_index2[256]; |
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extern int fpp_movem_next[256]; |
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|
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extern int broken_in; |
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|
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typedef void REGPARAM2 cpuop_func (uae_u32) REGPARAM; |
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#ifdef X86_ASSEMBLY |
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/* This hack seems to force all register saves (pushl %reg) to be moved to the |
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begining of the function, thus making it possible to cpuopti to remove them |
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since m68k_run_1 will save those registers before calling the instruction |
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handler */ |
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# define cpuop_tag(tag) __asm__ __volatile__ ( "#cpuop_" tag ) |
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#else |
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# define cpuop_tag(tag) ; |
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#endif |
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|
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#define cpuop_begin() do { cpuop_tag("begin"); } while (0) |
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#define cpuop_end() do { cpuop_tag("end"); } while (0) |
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|
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typedef void REGPARAM2 cpuop_func (uae_u32) REGPARAM; |
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|
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struct cputbl { |
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cpuop_func *handler; |
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int specific; |
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uae_u16 specific; |
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uae_u16 opcode; |
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}; |
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|
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extern void REGPARAM2 op_illg (uae_u32) REGPARAM; |
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extern cpuop_func *cpufunctbl[65536] ASM_SYM_FOR_FUNC ("cpufunctbl"); |
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|
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typedef char flagtype; |
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#if USE_JIT |
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typedef void compop_func (uae_u32) REGPARAM; |
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|
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extern struct regstruct |
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{ |
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uae_u32 regs[16]; |
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uaecptr usp,isp,msp; |
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uae_u16 sr; |
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flagtype t1; |
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flagtype t0; |
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flagtype s; |
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flagtype m; |
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flagtype x; |
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flagtype stopped; |
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int intmask; |
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|
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uae_u32 pc; |
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uae_u8 *pc_p; |
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uae_u8 *pc_oldp; |
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struct comptbl { |
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compop_func *handler; |
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uae_u32 specific; |
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uae_u32 opcode; |
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}; |
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#endif |
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|
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uae_u32 vbr,sfc,dfc; |
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extern void REGPARAM2 op_illg (uae_u32) REGPARAM; |
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|
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typedef char flagtype; |
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|
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double fp[8]; |
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uae_u32 fpcr,fpsr,fpiar; |
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struct regstruct { |
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uae_u32 regs[16]; |
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|
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uae_u32 spcflags; |
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uae_u32 kick_mask; |
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uae_u32 pc; |
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uae_u8 * pc_p; |
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uae_u8 * pc_oldp; |
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|
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spcflags_t spcflags; |
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int intmask; |
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|
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uae_u32 vbr, sfc, dfc; |
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uaecptr usp, isp, msp; |
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uae_u16 sr; |
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flagtype t1; |
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flagtype t0; |
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flagtype s; |
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flagtype m; |
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flagtype x; |
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flagtype stopped; |
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|
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#if USE_PREFETCH_BUFFER |
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/* Fellow sources say this is 4 longwords. That's impossible. It needs |
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* to be at least a longword. The HRM has some cryptic comment about two |
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* instructions being on the same longword boundary. |
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* The way this is implemented now seems like a good compromise. |
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*/ |
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uae_u32 prefetch; |
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} regs, lastint_regs; |
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#endif |
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}; |
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|
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extern regstruct regs, lastint_regs; |
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|
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#define m68k_dreg(r,num) ((r).regs[(num)]) |
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#define m68k_areg(r,num) (((r).regs + 8)[(num)]) |
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#define GET_OPCODE (get_iword (0)) |
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#endif |
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#if USE_PREFETCH_BUFFER |
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static __inline__ uae_u32 get_ibyte_prefetch (uae_s32 o) |
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{ |
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if (o > 3 || o < 0) |
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return do_get_mem_long(®s.prefetch); |
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return (do_get_mem_word (((uae_u16 *)®s.prefetch) + 1) << 16) | do_get_mem_word ((uae_u16 *)(regs.pc_p + 4)); |
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} |
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#endif |
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|
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#define m68k_incpc(o) (regs.pc_p += (o)) |
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|
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return r; |
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} |
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|
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#if !defined USE_COMPILER |
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static __inline__ void m68k_setpc (uaecptr newpc) |
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{ |
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#if REAL_ADDRESSING || DIRECT_ADDRESSING |
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regs.pc = newpc; |
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#endif |
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} |
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#else |
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extern void m68k_setpc (uaecptr newpc); |
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#endif |
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|
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static __inline__ uaecptr m68k_getpc (void) |
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{ |
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#endif |
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} |
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|
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#ifdef USE_COMPILER |
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extern void m68k_setpc_fast (uaecptr newpc); |
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extern void m68k_setpc_bcc (uaecptr newpc); |
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extern void m68k_setpc_rte (uaecptr newpc); |
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#else |
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#define m68k_setpc_fast m68k_setpc |
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#define m68k_setpc_bcc m68k_setpc |
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#define m68k_setpc_rte m68k_setpc |
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#endif |
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|
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static __inline__ void m68k_do_rts(void) |
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{ |
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static __inline__ void m68k_setstopped (int stop) |
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{ |
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regs.stopped = stop; |
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if (stop) |
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regs.spcflags |= SPCFLAG_STOP; |
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/* A traced STOP instruction drops through immediately without |
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actually stopping. */ |
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if (stop && (regs.spcflags & SPCFLAG_DOTRACE) == 0) |
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SPCFLAGS_SET( SPCFLAG_STOP ); |
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} |
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|
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extern uae_u32 get_disp_ea_020 (uae_u32 base, uae_u32 dp); |
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extern void MakeFromSR (void); |
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extern void Exception (int, uaecptr); |
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extern void dump_counts (void); |
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extern void m68k_move2c (int, uae_u32 *); |
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extern void m68k_movec2 (int, uae_u32 *); |
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extern int m68k_move2c (int, uae_u32 *); |
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extern int m68k_movec2 (int, uae_u32 *); |
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extern void m68k_divl (uae_u32, uae_u32, uae_u16, uaecptr); |
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extern void m68k_mull (uae_u32, uae_u32, uae_u16); |
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extern void m68k_emulop (uae_u32); |
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extern void m68k_emulop_return (void); |
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extern void init_m68k (void); |
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extern void exit_m68k (void); |
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extern void m68k_go (int); |
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extern void m68k_dumpstate (uaecptr *); |
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extern void m68k_disasm (uaecptr, uaecptr *, int); |
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extern void m68k_reset (void); |
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extern void m68k_enter_debugger(void); |
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extern int m68k_do_specialties(void); |
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|
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extern void mmu_op (uae_u32, uae_u16); |
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|
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extern void fpp_opp (uae_u32, uae_u16); |
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extern void fdbcc_opp (uae_u32, uae_u16); |
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extern void fscc_opp (uae_u32, uae_u16); |
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extern void ftrapcc_opp (uae_u32,uaecptr); |
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extern void fbcc_opp (uae_u32, uaecptr, uae_u32); |
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extern void fsave_opp (uae_u32); |
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extern void frestore_opp (uae_u32); |
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|
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extern void fpu_set_integral_fpu (bool is_integral); |
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extern void fpu_init (void); |
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extern void fpu_exit (void); |
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extern void fpu_reset (void); |
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|
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/* Opcode of faulting instruction */ |
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extern uae_u16 last_op_for_exception_3; |
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/* PC at fault time */ |
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#define CPU_OP_NAME(a) op ## a |
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|
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/* 68020 + 68881 */ |
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extern struct cputbl op_smalltbl_0[]; |
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extern struct cputbl op_smalltbl_0_ff[]; |
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/* 68020 */ |
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extern struct cputbl op_smalltbl_1[]; |
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> |
extern struct cputbl op_smalltbl_1_ff[]; |
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/* 68010 */ |
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extern struct cputbl op_smalltbl_2[]; |
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> |
extern struct cputbl op_smalltbl_2_ff[]; |
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/* 68000 */ |
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extern struct cputbl op_smalltbl_3[]; |
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extern struct cputbl op_smalltbl_3_ff[]; |
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/* 68000 slow but compatible. */ |
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extern struct cputbl op_smalltbl_4[]; |
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> |
extern struct cputbl op_smalltbl_4_ff[]; |
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|
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extern cpuop_func *cpufunctbl[65536] ASM_SYM_FOR_FUNC ("cpufunctbl"); |
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> |
#if FLIGHT_RECORDER |
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> |
extern void m68k_record_step(uaecptr) REGPARAM; |
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#endif |
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extern void m68k_do_execute(void); |
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extern void m68k_execute(void); |
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> |
#if USE_JIT |
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> |
extern void m68k_compile_execute(void); |
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> |
#endif |
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> |
#ifdef USE_CPU_EMUL_SERVICES |
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extern int32 emulated_ticks; |
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> |
extern void cpu_do_check_ticks(void); |
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|
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+ |
static inline void cpu_check_ticks(void) |
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{ |
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if (--emulated_ticks <= 0) |
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cpu_do_check_ticks(); |
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} |
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+ |
#else |
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#define cpu_check_ticks() |
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#define cpu_do_check_ticks() |
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#endif |
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|
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#endif /* NEWCPU_H */ |
