From 11da520c7af5b190e69c0906c6e95000c4e59f33 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Thu, 15 Oct 2015 00:55:41 -0400
Subject: add comment documenting hard-coded opcode for reading mips thread
pointer
---
arch/mips/pthread_arch.h | 1 +
1 file changed, 1 insertion(+)
(limited to 'arch/mips')
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));
--
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