| 1 | #ifndef MMAN_H |
| 2 | #define MMAN_H |
| 3 | |
| 4 | #ifdef __cplusplus |
| 5 | extern "C" { |
| 6 | #endif |
| 7 | |
| 8 | #include <stdlib.h> |
| 9 | #include <string.h> |
| 10 | #include <switch.h> |
| 11 | |
| 12 | #define PROT_READ 0b001 |
| 13 | #define PROT_WRITE 0b010 |
| 14 | #define PROT_EXEC 0b100 |
| 15 | #define MAP_PRIVATE 2 |
| 16 | #define MAP_FIXED 0x10 |
| 17 | #define MAP_ANONYMOUS 0x20 |
| 18 | |
| 19 | #define MAP_FAILED ((void *)-1) |
| 20 | |
| 21 | #define ALIGNMENT 0x1000 |
| 22 | |
| 23 | static inline void *mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset) |
| 24 | { |
| 25 | (void)fd; |
| 26 | (void)offset; |
| 27 | |
| 28 | // match Linux behavior |
| 29 | len = (len + ALIGNMENT - 1) & ~(ALIGNMENT - 1); |
| 30 | |
| 31 | Result rc = svcMapPhysicalMemory(addr, len); |
| 32 | if (R_FAILED(rc)) |
| 33 | { |
| 34 | //printf("mmap failed\n"); |
| 35 | addr = aligned_alloc(ALIGNMENT, len); |
| 36 | } |
| 37 | if (!addr) |
| 38 | return MAP_FAILED; |
| 39 | memset(addr, 0, len); |
| 40 | return addr; |
| 41 | } |
| 42 | |
| 43 | static inline int munmap(void *addr, size_t len) |
| 44 | { |
| 45 | len = (len + ALIGNMENT - 1) & ~(ALIGNMENT - 1); |
| 46 | Result rc = svcUnmapPhysicalMemory(addr, len); |
| 47 | if (R_FAILED(rc)) |
| 48 | { |
| 49 | //printf("munmap failed\n"); |
| 50 | free(addr); |
| 51 | } |
| 52 | return 0; |
| 53 | } |
| 54 | |
| 55 | #ifdef __cplusplus |
| 56 | }; |
| 57 | #endif |
| 58 | |
| 59 | #endif // MMAN_H |
| 60 | |