From 3a5b9ae7cf656648c80fe155a5239d9b4fb4c485 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Mon, 24 Aug 2020 22:23:08 -0400 Subject: deduplicate __pthread_self thread pointer adjustment out of each arch the adjustment made is entirely a function of TLS_ABOVE_TP and TP_OFFSET. aside from avoiding repetition of the TP_OFFSET value and arithmetic, this change makes pthread_arch.h independent of the definition of struct __pthread from pthread_impl.h. this in turn will allow inclusion of pthread_arch.h to be moved to the top of pthread_impl.h so that it can influence the definition of the structure. previously, arch files were very inconsistent about the type used for the thread pointer. this change unifies the new __get_tp interface to always use uintptr_t, which is the most correct when performing arithmetic that may involve addresses outside the actual pointed-to object (due to TP_OFFSET). --- arch/riscv64/pthread_arch.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/riscv64') diff --git a/arch/riscv64/pthread_arch.h b/arch/riscv64/pthread_arch.h index 50f0868d..a20d7fba 100644 --- a/arch/riscv64/pthread_arch.h +++ b/arch/riscv64/pthread_arch.h @@ -1,8 +1,8 @@ -static inline struct pthread *__pthread_self() +static inline uintptr_t __get_tp() { - char *tp; + uintptr_t tp; __asm__ __volatile__("mv %0, tp" : "=r"(tp)); - return (void *)(tp - sizeof(struct pthread)); + return tp; } #define TLS_ABOVE_TP -- cgit v1.2.1