| 30 |
|
# include <pthread.h> |
| 31 |
|
#endif |
| 32 |
|
|
| 33 |
< |
#if defined(USE_MAPPED_MEMORY) || REAL_ADDRESSING || DIRECT_ADDRESSING |
| 33 |
> |
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
| 34 |
|
# include <sys/mman.h> |
| 35 |
|
#endif |
| 36 |
|
|
| 160 |
|
static uint32 mapped_ram_rom_size; // Total size of mmap()ed RAM/ROM area |
| 161 |
|
#endif |
| 162 |
|
|
| 163 |
– |
#ifdef USE_MAPPED_MEMORY |
| 164 |
– |
extern char *address_space, *good_address_map; |
| 165 |
– |
#endif |
| 166 |
– |
|
| 163 |
|
|
| 164 |
|
// Prototypes |
| 165 |
|
static void *xpram_func(void *arg); |
| 309 |
|
#endif |
| 310 |
|
|
| 311 |
|
// Create areas for Mac RAM and ROM |
| 312 |
< |
#if defined(USE_MAPPED_MEMORY) |
| 317 |
< |
good_address_map = (char *)mmap(NULL, 1<<24, PROT_READ, MAP_PRIVATE, zero_fd, 0); |
| 318 |
< |
address_space = (char *)mmap(NULL, 1<<24, PROT_READ | PROT_WRITE, MAP_PRIVATE, zero_fd, 0); |
| 319 |
< |
if ((int)address_space < 0 || (int)good_address_map < 0) { |
| 320 |
< |
ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR)); |
| 321 |
< |
QuitEmulator(); |
| 322 |
< |
} |
| 323 |
< |
RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, zero_fd, 0); |
| 324 |
< |
ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, zero_fd, 0); |
| 325 |
< |
char *nam = tmpnam(NULL); |
| 326 |
< |
int good_address_fd = open(nam, O_CREAT | O_RDWR, 0600); |
| 327 |
< |
char buffer[4096]; |
| 328 |
< |
memset(buffer, 1, sizeof(buffer)); |
| 329 |
< |
write(good_address_fd, buffer, sizeof(buffer)); |
| 330 |
< |
unlink(nam); |
| 331 |
< |
for (int i=0; i<RAMSize; i+=4096) |
| 332 |
< |
mmap(good_address_map + i, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0); |
| 333 |
< |
for (int i=0; i<0x80000; i+=4096) |
| 334 |
< |
mmap(good_address_map + i + 0x00400000, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0); |
| 335 |
< |
#elif REAL_ADDRESSING || DIRECT_ADDRESSING |
| 312 |
> |
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
| 313 |
|
// gb-- Overkill, needs to be cleaned up. Probably explode it for either |
| 314 |
|
// real or direct addressing mode. |
| 315 |
|
#if REAL_ADDRESSING |
| 841 |
|
* the highest accuracy possible) |
| 842 |
|
*/ |
| 843 |
|
|
| 844 |
+ |
#if defined(linux) |
| 845 |
+ |
// Linux select() changes its timeout parameter upon return to contain |
| 846 |
+ |
// the remaining time. Most other unixen leave it unchanged or undefined. |
| 847 |
+ |
#define SELECT_SETS_REMAINING |
| 848 |
+ |
#elif defined(__FreeBSD__) || defined(__sun__) || defined(sgi) |
| 849 |
+ |
#define USE_NANOSLEEP |
| 850 |
+ |
#endif |
| 851 |
+ |
|
| 852 |
|
void Delay_usec(uint32 usec) |
| 853 |
|
{ |
| 854 |
|
int was_error; |
| 855 |
|
|
| 856 |
< |
#if defined(linux) |
| 872 |
< |
struct timeval tv; |
| 873 |
< |
#elif defined(__FreeBSD__) || defined(sgi) |
| 856 |
> |
#ifdef USE_NANOSLEEP |
| 857 |
|
struct timespec elapsed, tv; |
| 858 |
< |
#else // Non-Linux implementations need to calculate time left |
| 858 |
> |
#else |
| 859 |
> |
struct timeval tv; |
| 860 |
> |
#ifndef SELECT_SETS_REMAINING |
| 861 |
|
uint64 then, now, elapsed; |
| 862 |
|
#endif |
| 863 |
+ |
#endif |
| 864 |
|
|
| 865 |
|
// Set the timeout interval - Linux only needs to do this once |
| 866 |
< |
#if defined(linux) |
| 867 |
< |
tv.tv_sec = 0; |
| 868 |
< |
tv.tv_usec = usec; |
| 869 |
< |
#elif defined(__FreeBSD__) || defined(sgi) |
| 870 |
< |
elapsed.tv_sec = 0; |
| 871 |
< |
elapsed.tv_nsec = usec * 1000; |
| 866 |
> |
#ifdef SELECT_SETS_REMAINING |
| 867 |
> |
tv.tv_sec = 0; |
| 868 |
> |
tv.tv_usec = usec; |
| 869 |
> |
#elif defined(USE_NANOSLEEP) |
| 870 |
> |
elapsed.tv_sec = 0; |
| 871 |
> |
elapsed.tv_nsec = usec * 1000; |
| 872 |
|
#else |
| 873 |
< |
then = GetTicks_usec(); |
| 873 |
> |
then = GetTicks_usec(); |
| 874 |
|
#endif |
| 875 |
+ |
|
| 876 |
|
do { |
| 877 |
|
errno = 0; |
| 878 |
< |
#if !defined(linux) && !defined(__FreeBSD__) && !defined(sgi) |
| 879 |
< |
/* Calculate the time interval left (in case of interrupt) */ |
| 878 |
> |
#ifdef USE_NANOSLEEP |
| 879 |
> |
tv.tv_sec = elapsed.tv_sec; |
| 880 |
> |
tv.tv_nsec = elapsed.tv_nsec; |
| 881 |
> |
was_error = nanosleep(&tv, &elapsed); |
| 882 |
> |
#else |
| 883 |
> |
#ifndef SELECT_SETS_REMAINING |
| 884 |
> |
// Calculate the time interval left (in case of interrupt) |
| 885 |
|
now = GetTicks_usec(); |
| 886 |
|
elapsed = now - then; |
| 887 |
|
then = now; |
| 891 |
|
tv.tv_sec = 0; |
| 892 |
|
tv.tv_usec = usec; |
| 893 |
|
#endif |
| 902 |
– |
#if defined(__FreeBSD__) || defined(sgi) |
| 903 |
– |
tv.tv_sec = elapsed.tv_sec; |
| 904 |
– |
tv.tv_nsec = elapsed.tv_nsec; |
| 905 |
– |
was_error = nanosleep(&tv, &elapsed); |
| 906 |
– |
#else |
| 894 |
|
was_error = select(0, NULL, NULL, NULL, &tv); |
| 895 |
|
#endif |
| 896 |
|
} while (was_error && (errno == EINTR)); |
