} fp_reg;
typedef struct
+{
+ unsigned int lower;
+ unsigned int upper;
+ unsigned char *offset;
+} address_translation_cache;
+
+
+
+typedef struct m68ki_cpu_core
{
uint cpu_type; /* CPU Type: 68000, 68008, 68010, 68EC020, 68020, 68EC030, 68030, 68EC040, or 68040 */
uint dar[16]; /* Data and Address Registers */
void (*set_fc_callback)(unsigned int new_fc); /* Called when the CPU function code changes */
void (*instr_hook_callback)(unsigned int pc); /* Called every instruction cycle prior to execution */
+ /* address translation caches */
+
+ unsigned char read_ranges;
+ unsigned int read_addr[8];
+ unsigned int read_upper[8];
+ unsigned char *read_data[8];
+ unsigned char write_ranges;
+ unsigned int write_addr[8];
+ unsigned int write_upper[8];
+ unsigned char *write_data[8];
+ address_translation_cache code_translation_cache;
+
+
} m68ki_cpu_core;
/* ---------------------------- Read Immediate ---------------------------- */
-typedef struct
-{
- unsigned int lower;
- unsigned int upper;
- unsigned char *data;
-} address_translation_cache;
-
-
-extern unsigned char read_ranges;
-extern unsigned int read_addr[8];
-extern unsigned int read_upper[8];
-extern unsigned char *read_data[8];
-extern unsigned char write_ranges;
-extern unsigned int write_addr[8];
-extern unsigned int write_upper[8];
-extern unsigned char *write_data[8];
-
-extern address_translation_cache code_translation_cache;
// clear the instruction cache
inline void m68ki_ic_clear()
{
uint32_t pc = REG_PC;
- address_translation_cache *cache = &code_translation_cache;
- if(pc >= cache->lower && pc < cache->upper)
- {
- REG_PC += 2;
- return be16toh(((unsigned short *)(cache->data + (pc - cache->lower)))[0]);
- }
- return m68ki_read_imm6_addr_slowpath(pc, cache);
+ address_translation_cache *cache = &m68ki_cpu.code_translation_cache;
+ if(pc >= cache->lower && pc < cache->upper)
+ {
+ REG_PC += 2;
+ return be16toh(((unsigned short *)(cache->offset + pc))[0]);
+ }
+ return m68ki_read_imm6_addr_slowpath(pc, cache);
}
-
static inline uint m68ki_read_imm_8(void)
{
/* map read immediate 8 to read immediate 16 */
#endif
#endif
uint32_t address = ADDRESS_68K(REG_PC);
- for (int i = 0; i < read_ranges; i++) {
- if(address >= read_addr[i] && address < read_upper[i]) {
+ for (int i = 0; i < m68ki_cpu.read_ranges; i++) {
+ if(address >= m68ki_cpu.read_addr[i] && address < m68ki_cpu.read_upper[i]) {
REG_PC += 4;
- return be32toh(((unsigned int *)(read_data[i] + (address - read_addr[i])))[0]);
+ return be32toh(((unsigned int *)(m68ki_cpu.read_data[i] + (address - m68ki_cpu.read_addr[i])))[0]);
}
}
return temp_val;
#else
- m68ki_set_fc(FLAG_S | FUNCTION_CODE_USER_PROGRAM); /* auto-disable (see m68kcpu.h) */
- m68ki_check_address_error(REG_PC, MODE_READ, FLAG_S | FUNCTION_CODE_USER_PROGRAM); /* auto-disable (see m68kcpu.h) */
- uint32_t address = ADDRESS_68K(REG_PC);
REG_PC += 4;
- for (int i = 0; i < read_ranges; i++) {
- if(address >= read_addr[i] && address < read_upper[i]) {
- return be32toh(((unsigned int *)(read_data[i] + (address - read_addr[i])))[0]);
- }
- }
return m68k_read_immediate_32(address);
#endif /* M68K_EMULATE_PREFETCH */
address = pmmu_translate_addr(address,1);
#endif
- for (int i = 0; i < read_ranges; i++) {
- if(address >= read_addr[i] && address < read_upper[i]) {
- return read_data[i][address - read_addr[i]];
+ for (int i = 0; i < m68ki_cpu.read_ranges; i++) {
+ if(address >= m68ki_cpu.read_addr[i] && address < m68ki_cpu.read_upper[i]) {
+ return m68ki_cpu.read_data[i][address - m68ki_cpu.read_addr[i]];
}
}
address = pmmu_translate_addr(address,1);
#endif
- for (int i = 0; i < read_ranges; i++) {
- if(address >= read_addr[i] && address < read_upper[i]) {
- return be16toh(((unsigned short *)(read_data[i] + (address - read_addr[i])))[0]);
+ for (int i = 0; i < m68ki_cpu.read_ranges; i++) {
+ if(address >= m68ki_cpu.read_addr[i] && address < m68ki_cpu.read_upper[i]) {
+ return be16toh(((unsigned short *)(m68ki_cpu.read_data[i] + (address - m68ki_cpu.read_addr[i])))[0]);
}
}
address = pmmu_translate_addr(address,1);
#endif
- for (int i = 0; i < read_ranges; i++) {
- if(address >= read_addr[i] && address < read_upper[i]) {
- return be32toh(((unsigned int *)(read_data[i] + (address - read_addr[i])))[0]);
+ for (int i = 0; i < m68ki_cpu.read_ranges; i++) {
+ if(address >= m68ki_cpu.read_addr[i] && address < m68ki_cpu.read_upper[i]) {
+ return be32toh(((unsigned int *)(m68ki_cpu.read_data[i] + (address - m68ki_cpu.read_addr[i])))[0]);
}
}
address = pmmu_translate_addr(address,0);
#endif
- for (int i = 0; i < write_ranges; i++) {
- if(address >= write_addr[i] && address < write_upper[i]) {
- write_data[i][address - write_addr[i]] = (unsigned char)value;
+ for (int i = 0; i < m68ki_cpu.write_ranges; i++) {
+ if(address >= m68ki_cpu.write_addr[i] && address < m68ki_cpu.write_upper[i]) {
+ m68ki_cpu.write_data[i][address - m68ki_cpu.write_addr[i]] = (unsigned char)value;
return;
}
}
address = pmmu_translate_addr(address,0);
#endif
- for (int i = 0; i < write_ranges; i++) {
- if(address >= write_addr[i] && address < write_upper[i]) {
- ((short *)(write_data[i] + (address - write_addr[i])))[0] = htobe16(value);
+ for (int i = 0; i < m68ki_cpu.write_ranges; i++) {
+ if(address >= m68ki_cpu.write_addr[i] && address < m68ki_cpu.write_upper[i]) {
+ ((short *)(m68ki_cpu.write_data[i] + (address - m68ki_cpu.write_addr[i])))[0] = htobe16(value);
return;
}
}
address = pmmu_translate_addr(address,0);
#endif
- for (int i = 0; i < write_ranges; i++) {
- if(address >= write_addr[i] && address < write_upper[i]) {
- ((int *)(write_data[i] + (address - write_addr[i])))[0] = htobe32(value);
+ for (int i = 0; i < m68ki_cpu.write_ranges; i++) {
+ if(address >= m68ki_cpu.write_addr[i] && address < m68ki_cpu.write_upper[i]) {
+ ((int *)(m68ki_cpu.write_data[i] + (address - m68ki_cpu.write_addr[i])))[0] = htobe32(value);
return;
}
}