projects / fio.git / blame
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| 21540653 MB |
1 | #ifndef ARCH_RISCV64_H |
| 2 | #define ARCH_RISCV64_H | |
| 3 | ||
| 4 | #include <unistd.h> | |
| 5 | #include <stdlib.h> | |
| 6 | #include <sys/types.h> | |
| 7 | #include <sys/wait.h> | |
| 8 | ||
| 9 | #define FIO_ARCH (arch_riscv64) | |
| 10 | ||
| 11 | #define nop __asm__ __volatile__ ("nop") | |
| 12 | #define read_barrier() __asm__ __volatile__("fence r, r": : :"memory") | |
| 13 | #define write_barrier() __asm__ __volatile__("fence w, w": : :"memory") | |
| 14 | ||
| 15 | static inline unsigned long long get_cpu_clock(void) | |
| 16 | { | |
| 17 | unsigned long val; | |
| 18 | ||
| 577b85ec | 19 | asm volatile("rdtime %0" : "=r"(val)); |
| 21540653 MB |
20 | return val; |
| 21 | } | |
| 22 | #define ARCH_HAVE_CPU_CLOCK | |
| 23 | ||
| 24 | #define ARCH_HAVE_INIT | |
| 25 | extern bool tsc_reliable; | |
| 26 | static inline int arch_init(char *envp[]) | |
| 27 | { | |
| 28 | tsc_reliable = true; | |
| 29 | return 0; | |
| 30 | } | |
| 31 | ||
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32 | #define __do_syscallM(...) ({ \ |
| 33 | __asm__ volatile ( \ | |
| 34 | "ecall" \ | |
| 35 | : "=r"(a0) \ | |
| 36 | : __VA_ARGS__ \ | |
| 37 | : "memory", "a1"); \ | |
| 38 | (long) a0; \ | |
| 39 | }) | |
| 40 | ||
| 41 | #define __do_syscallN(...) ({ \ | |
| 42 | __asm__ volatile ( \ | |
| 43 | "ecall" \ | |
| 44 | : "=r"(a0) \ | |
| 45 | : __VA_ARGS__ \ | |
| 46 | : "memory"); \ | |
| 47 | (long) a0; \ | |
| 48 | }) | |
| 49 | ||
| 50 | #define __do_syscall0(__n) ({ \ | |
| 51 | register long a7 __asm__("a7") = __n; \ | |
| 52 | register long a0 __asm__("a0"); \ | |
| 53 | \ | |
| 54 | __do_syscallM("r" (a7)); \ | |
| 55 | }) | |
| 56 | ||
| 57 | #define __do_syscall1(__n, __a) ({ \ | |
| 58 | register long a7 __asm__("a7") = __n; \ | |
| 59 | register __typeof__(__a) a0 __asm__("a0") = __a; \ | |
| 60 | \ | |
| 61 | __do_syscallM("r" (a7), "0" (a0)); \ | |
| 62 | }) | |
| 63 | ||
| 64 | #define __do_syscall2(__n, __a, __b) ({ \ | |
| 65 | register long a7 __asm__("a7") = __n; \ | |
| 66 | register __typeof__(__a) a0 __asm__("a0") = __a; \ | |
| 67 | register __typeof__(__b) a1 __asm__("a1") = __b; \ | |
| 68 | \ | |
| 69 | __do_syscallN("r" (a7), "0" (a0), "r" (a1)); \ | |
| 70 | }) | |
| 71 | ||
| 72 | #define __do_syscall3(__n, __a, __b, __c) ({ \ | |
| 73 | register long a7 __asm__("a7") = __n; \ | |
| 74 | register __typeof__(__a) a0 __asm__("a0") = __a; \ | |
| 75 | register __typeof__(__b) a1 __asm__("a1") = __b; \ | |
| 76 | register __typeof__(__c) a2 __asm__("a2") = __c; \ | |
| 77 | \ | |
| 78 | __do_syscallN("r" (a7), "0" (a0), "r" (a1), "r" (a2)); \ | |
| 79 | }) | |
| 80 | ||
| 81 | #define __do_syscall4(__n, __a, __b, __c, __d) ({ \ | |
| 82 | register long a7 __asm__("a7") = __n; \ | |
| 83 | register __typeof__(__a) a0 __asm__("a0") = __a; \ | |
| 84 | register __typeof__(__b) a1 __asm__("a1") = __b; \ | |
| 85 | register __typeof__(__c) a2 __asm__("a2") = __c; \ | |
| 86 | register __typeof__(__d) a3 __asm__("a3") = __d; \ | |
| 87 | \ | |
| 88 | __do_syscallN("r" (a7), "0" (a0), "r" (a1), "r" (a2), "r" (a3));\ | |
| 89 | }) | |
| 90 | ||
| 91 | #define __do_syscall5(__n, __a, __b, __c, __d, __e) ({ \ | |
| 92 | register long a7 __asm__("a7") = __n; \ | |
| 93 | register __typeof__(__a) a0 __asm__("a0") = __a; \ | |
| 94 | register __typeof__(__b) a1 __asm__("a1") = __b; \ | |
| 95 | register __typeof__(__c) a2 __asm__("a2") = __c; \ | |
| 96 | register __typeof__(__d) a3 __asm__("a3") = __d; \ | |
| 97 | register __typeof__(__e) a4 __asm__("a4") = __e; \ | |
| 98 | \ | |
| 99 | __do_syscallN("r" (a7), "0" (a0), "r" (a1), "r" (a2), "r" (a3), \ | |
| 100 | "r"(a4)); \ | |
| 101 | }) | |
| 102 | ||
| 103 | #define __do_syscall6(__n, __a, __b, __c, __d, __e, __f) ({ \ | |
| 104 | register long a7 __asm__("a7") = __n; \ | |
| 105 | register __typeof__(__a) a0 __asm__("a0") = __a; \ | |
| 106 | register __typeof__(__b) a1 __asm__("a1") = __b; \ | |
| 107 | register __typeof__(__c) a2 __asm__("a2") = __c; \ | |
| 108 | register __typeof__(__d) a3 __asm__("a3") = __d; \ | |
| 109 | register __typeof__(__e) a4 __asm__("a4") = __e; \ | |
| 110 | register __typeof__(__f) a5 __asm__("a5") = __f; \ | |
| 111 | \ | |
| 112 | __do_syscallN("r" (a7), "0" (a0), "r" (a1), "r" (a2), "r" (a3), \ | |
| 113 | "r" (a4), "r"(a5)); \ | |
| 114 | }) | |
| 115 | ||
| 116 | #define FIO_ARCH_HAS_SYSCALL | |
| 117 | ||
| 21540653 | 118 | #endif |