From 11da520c7af5b190e69c0906c6e95000c4e59f33 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Thu, 15 Oct 2015 00:55:41 -0400 Subject: [PATCH] add comment documenting hard-coded opcode for reading mips thread pointer --- arch/mips/pthread_arch.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mips/pthread_arch.h b/arch/mips/pthread_arch.h index 904a2489..93edbd4e 100644 --- a/arch/mips/pthread_arch.h +++ b/arch/mips/pthread_arch.h @@ -5,6 +5,7 @@ static inline struct pthread *__pthread_self() __asm__ __volatile__ (".word 0x7c03e83b ; move %0, $3" : "=r" (tp) : : "$3" ); #else register char *tp __asm__("$3"); + /* rdhwr $3,$29 */ __asm__ __volatile__ (".word 0x7c03e83b" : "=r" (tp) ); #endif return (pthread_t)(tp - 0x7000 - sizeof(struct pthread)); -- 2.25.1