diff options
Diffstat (limited to 'hwaccess.c')
| -rw-r--r-- | hwaccess.c | 43 |
1 files changed, 42 insertions, 1 deletions
@@ -36,7 +36,9 @@ void get_io_perms(void) if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) != 0) { #elif defined(__FreeBSD__) || defined (__DragonFly__) if ((io_fd = open("/dev/io", O_RDWR)) < 0) { -#else +#elif __DJGPP__ + if (0) { +#else if (iopl(3) != 0) { #endif fprintf(stderr, "ERROR: Could not get I/O privileges (%s).\n" @@ -52,6 +54,44 @@ void release_io_perms(void) #endif } +#ifdef __DJGPP__ + +extern unsigned short segFS; + +#include <sys/farptr.h> + +void mmio_writeb(uint8_t val, void *addr) +{ + _farpokeb(segFS, (unsigned long) addr, val); +} + +void mmio_writew(uint16_t val, void *addr) +{ + _farpokew(segFS, (unsigned long) addr, val); +} + +void mmio_writel(uint32_t val, void *addr) +{ + _farpokel(segFS, (unsigned long) addr, val); +} + +uint8_t mmio_readb(void *addr) +{ + return _farpeekb(segFS, (unsigned long) addr); +} + +uint16_t mmio_readw(void *addr) +{ + return _farpeekw(segFS, (unsigned long) addr); +} + +uint32_t mmio_readl(void *addr) +{ + return _farpeekl(segFS, (unsigned long) addr); +} + +#else + void mmio_writeb(uint8_t val, void *addr) { *(volatile uint8_t *) addr = val; @@ -81,3 +121,4 @@ uint32_t mmio_readl(void *addr) { return *(volatile uint32_t *) addr; } +#endif |
