diff options
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/rseq/rseq.h | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/tools/testing/selftests/rseq/rseq.h b/tools/testing/selftests/rseq/rseq.h index 3f63eb362b92..6f7513384bf5 100644 --- a/tools/testing/selftests/rseq/rseq.h +++ b/tools/testing/selftests/rseq/rseq.h @@ -16,7 +16,9 @@ #include <errno.h> #include <stdio.h> #include <stdlib.h> -#include <linux/rseq.h> +#include <stddef.h> +#include "rseq-abi.h" +#include "compiler.h" /* * Empty code injection macros, override when testing. @@ -43,8 +45,20 @@ #define RSEQ_INJECT_FAILED #endif -extern __thread volatile struct rseq __rseq_abi; -extern int __rseq_handled; +#include "rseq-thread-pointer.h" + +/* Offset from the thread pointer to the rseq area. */ +extern ptrdiff_t rseq_offset; +/* Size of the registered rseq area. 0 if the registration was + unsuccessful. */ +extern unsigned int rseq_size; +/* Flags used during rseq registration. */ +extern unsigned int rseq_flags; + +static inline struct rseq_abi *rseq_get_abi(void) +{ + return (struct rseq_abi *) ((uintptr_t) rseq_thread_pointer() + rseq_offset); +} #define rseq_likely(x) __builtin_expect(!!(x), 1) #define rseq_unlikely(x) __builtin_expect(!!(x), 0) @@ -79,6 +93,8 @@ extern int __rseq_handled; #include <rseq-mips.h> #elif defined(__s390__) #include <rseq-s390.h> +#elif defined(__riscv) +#include <rseq-riscv.h> #else #error unsupported target #endif @@ -108,7 +124,7 @@ int32_t rseq_fallback_current_cpu(void); */ static inline int32_t rseq_current_cpu_raw(void) { - return RSEQ_ACCESS_ONCE(__rseq_abi.cpu_id); + return RSEQ_ACCESS_ONCE(rseq_get_abi()->cpu_id); } /* @@ -124,7 +140,7 @@ static inline int32_t rseq_current_cpu_raw(void) */ static inline uint32_t rseq_cpu_start(void) { - return RSEQ_ACCESS_ONCE(__rseq_abi.cpu_id_start); + return RSEQ_ACCESS_ONCE(rseq_get_abi()->cpu_id_start); } static inline uint32_t rseq_current_cpu(void) @@ -139,11 +155,7 @@ static inline uint32_t rseq_current_cpu(void) static inline void rseq_clear_rseq_cs(void) { -#ifdef __LP64__ - __rseq_abi.rseq_cs.ptr = 0; -#else - __rseq_abi.rseq_cs.ptr.ptr32 = 0; -#endif + RSEQ_WRITE_ONCE(rseq_get_abi()->rseq_cs.arch.ptr, 0); } /* |