projects / fio.git / blame
| Commit | Line | Data |
|---|---|---|
| 29721c9c NI |
1 | /* Renesas SH (32bit) only */ |
| 2 | ||
| 3 | #ifndef ARCH_SH_H | |
| 4 | #define ARCH_SH_H | |
| 5 | ||
| cca84643 | 6 | #define FIO_ARCH (arch_sh) |
| 29721c9c | 7 | |
| 29721c9c | 8 | #define nop __asm__ __volatile__ ("nop": : :"memory") |
| e0c4a469 | 9 | |
| d3cc4ebf JA |
10 | #define mb() \ |
| 11 | do { \ | |
| 12 | if (arch_flags & ARCH_FLAG_1) \ | |
| 13 | __asm__ __volatile__ ("synco": : :"memory"); \ | |
| 14 | else \ | |
| 15 | __asm__ __volatile__ (" " : : : "memory"); \ | |
| 16 | } while (0) | |
| e0c4a469 JA |
17 | |
| 18 | #define read_barrier() mb() | |
| 19 | #define write_barrier() mb() | |
| 29721c9c | 20 | |
| 5f739e0e NI |
21 | #include <stdio.h> |
| 22 | #include <elf.h> | |
| 23 | ||
| 24 | extern unsigned long arch_flags; | |
| 25 | ||
| d3cc4ebf JA |
26 | #define CPU_HAS_LLSC 0x0040 |
| 27 | ||
| 28 | static inline int arch_init(char *envp[]) | |
| 29 | { | |
| 30 | Elf32_auxv_t *auxv; | |
| 31 | ||
| 32 | while (*envp++ != NULL) | |
| 33 | ; | |
| 34 | ||
| 35 | for (auxv = (Elf32_auxv_t *) envp; auxv->a_type != AT_NULL; auxv++) { | |
| 36 | if (auxv->a_type == AT_HWCAP) { | |
| 37 | if (auxv->a_un.a_val & CPU_HAS_LLSC) { | |
| 38 | arch_flags |= ARCH_FLAG_1; | |
| 39 | break; | |
| 40 | } | |
| 41 | } | |
| 42 | } | |
| 43 | ||
| 44 | return 0; | |
| 45 | } | |
| 46 | ||
| 47 | #define ARCH_HAVE_INIT | |
| 48 | ||
| 29721c9c | 49 | #endif |