1#define DEBUG 2 3/* These define the size of main memory for the simulator. 4 5 Note the size of main memory for the H8/300H is only 256k. Keeping it 6 small makes the simulator run much faster and consume less memory. 7 8 The linker knows about the limited size of the simulator's main memory 9 on the H8/300H (via the h8300h.sc linker script). So if you change 10 H8300H_MSIZE, be sure to fix the linker script too. 11 12 Also note that there's a separate "eightbit" area aside from main 13 memory. For simplicity, the simulator assumes any data memory reference 14 outside of main memory refers to the eightbit area (in theory, this 15 can only happen when simulating H8/300H programs). We make no attempt 16 to catch overlapping addresses, wrapped addresses, etc etc. */ 17#define H8300_MSIZE (1 << 16) 18 19/* avolkov: 20 Next 2 macros are ugly for any workstation, but while they're work. 21 Memory size MUST be configurable. */ 22#define H8300H_MSIZE (1 << 18) 23#define H8300S_MSIZE (1 << 24) 24 25#define CSIZE 1000 26 27/* Local register names */ 28typedef enum 29{ 30 R0, R1, R2, R3, R4, R5, R6, R7, 31 R_ZERO, 32 R_PC, 33 R_CCR, 34 R_EXR, 35 R_HARD_0, 36 R_LAST, 37} reg_type; 38 39 40/* Structure used to describe addressing */ 41 42typedef struct 43{ 44 int type; 45 int reg; 46 int literal; 47} ea_type; 48 49 50 51typedef struct 52{ 53 ea_type src; 54 ea_type dst; 55 int opcode; 56 int next_pc; 57 int oldpc; 58 int cycles; 59#ifdef DEBUG 60struct h8_opcode *op; 61#endif 62} 63decoded_inst; 64 65enum h8300_sim_state { 66 SIM_STATE_RUNNING, SIM_STATE_EXITED, SIM_STATE_SIGNALLED, SIM_STATE_STOPPED 67}; 68 69/* For Command Line. */ 70char **ptr_command_line; /* Pointer to Command Line Arguments. */ 71 72typedef struct 73{ 74 enum h8300_sim_state state; 75 int exception; 76 unsigned int regs[9]; 77 int pc; 78 int ccr; 79 int exr; 80 81 unsigned char *memory; 82 unsigned char *eightbit; 83 unsigned short *cache_idx; 84 int cache_top; 85 int maximum; 86 int csize; 87 int mask; 88 89 decoded_inst *cache; 90 int cycles; 91 int insts; 92 int ticks; 93 int compiles; 94#ifdef ADEBUG 95 int stats[O_LAST]; 96#endif 97} 98cpu_state_type; 99