HCoop / clinton / Virtual-Jaguar-Rx.git / blame
| Commit | Line | Data |
|---|---|---|
| cf76e892 JPM |
1 | // |
| 2 | // Common definitions for the UAE 68000 core | |
| 3 | // | |
| 4 | // by James Hammons | |
| 5 | // (C) 2011 Underground Software | |
| 6 | // | |
| 7 | // This file is distributed under the GNU Public License, version 3 or at your | |
| 8 | // option any later version. Read the file GPLv3 for details. | |
| 9 | // | |
| 10 | ||
| 11 | #ifndef __CPUDEFS_H__ | |
| 12 | #define __CPUDEFS_H__ | |
| 13 | ||
| 14 | #include "sysdeps.h" | |
| 15 | ||
| 16 | /* Special flags */ | |
| 17 | #define SPCFLAG_DEBUGGER 0x001 | |
| 18 | #define SPCFLAG_STOP 0x002 | |
| 19 | #define SPCFLAG_BUSERROR 0x004 | |
| 20 | #define SPCFLAG_INT 0x008 | |
| 21 | #define SPCFLAG_BRK 0x010 | |
| 22 | #define SPCFLAG_EXTRA_CYCLES 0x020 | |
| 23 | #define SPCFLAG_TRACE 0x040 | |
| 24 | #define SPCFLAG_DOTRACE 0x080 | |
| 25 | #define SPCFLAG_DOINT 0x100 | |
| 26 | #define SPCFLAG_MFP 0x200 | |
| 27 | #define SPCFLAG_EXEC 0x400 | |
| 28 | #define SPCFLAG_MODE_CHANGE 0x800 | |
| 29 | ||
| 30 | struct regstruct | |
| 31 | { | |
| 32 | uint32_t regs[16]; | |
| 33 | uint32_t usp, isp; | |
| 34 | uint16_t sr; | |
| 35 | uint8_t s; | |
| 36 | uint8_t stopped; | |
| 37 | int intmask; | |
| 38 | int intLevel; | |
| 39 | ||
| 40 | unsigned int c; | |
| 41 | unsigned int z; | |
| 42 | unsigned int n; | |
| 43 | unsigned int v; | |
| 44 | unsigned int x; | |
| 45 | ||
| 46 | uint32_t pc; | |
| 47 | uint8_t * pc_p; | |
| 48 | uint8_t * pc_oldp; | |
| 49 | ||
| 50 | uint32_t spcflags; | |
| 51 | ||
| 52 | uint32_t prefetch_pc; | |
| 53 | uint32_t prefetch; | |
| 54 | ||
| 55 | int32_t remainingCycles; | |
| 56 | uint32_t interruptCycles; | |
| 57 | }; | |
| 58 | ||
| 59 | extern struct regstruct regs, lastint_regs; | |
| 60 | ||
| 61 | #define m68k_dreg(r, num) ((r).regs[(num)]) | |
| 62 | #define m68k_areg(r, num) (((r).regs + 8)[(num)]) | |
| 63 | ||
| 64 | #define ZFLG (regs.z) | |
| 65 | #define NFLG (regs.n) | |
| 66 | #define CFLG (regs.c) | |
| 67 | #define VFLG (regs.v) | |
| 68 | #define XFLG (regs.x) | |
| 69 | ||
| 70 | /* Possible exceptions sources for M68000_Exception() and Exception() */ | |
| 71 | #define M68000_EXC_SRC_CPU 1 /* Direct CPU exception */ | |
| 72 | #define M68000_EXC_SRC_AUTOVEC 2 /* Auto-vector exception (e.g. VBL) */ | |
| 73 | //#define M68000_EXC_SRC_INT_MFP 3 /* MFP interrupt exception */ | |
| 74 | //#define M68000_EXC_SRC_INT_DSP 4 /* DSP interrupt exception */ | |
| 75 | ||
| 76 | #define SET_CFLG(x) (CFLG = (x)) | |
| 77 | #define SET_NFLG(x) (NFLG = (x)) | |
| 78 | #define SET_VFLG(x) (VFLG = (x)) | |
| 79 | #define SET_ZFLG(x) (ZFLG = (x)) | |
| 80 | #define SET_XFLG(x) (XFLG = (x)) | |
| 81 | ||
| 82 | #define GET_CFLG CFLG | |
| 83 | #define GET_NFLG NFLG | |
| 84 | #define GET_VFLG VFLG | |
| 85 | #define GET_ZFLG ZFLG | |
| 86 | #define GET_XFLG XFLG | |
| 87 | ||
| 88 | #define CLEAR_CZNV do { \ | |
| 89 | SET_CFLG(0); \ | |
| 90 | SET_ZFLG(0); \ | |
| 91 | SET_NFLG(0); \ | |
| 92 | SET_VFLG(0); \ | |
| 93 | } while (0) | |
| 94 | ||
| 95 | #define COPY_CARRY (SET_XFLG(GET_CFLG)) | |
| 96 | ||
| 97 | #endif // __CPUDEFS_H__ |