From 0b54352600b820a6d25f151cbd8975ed9b2aeb09 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Thu, 30 Apr 2009 02:16:19 +0200 Subject: [PATCH] MIPS: Fix sign-extension bug in 32-bit kernel on 32-bit hardware. Probably nobody does arithmetic on cp0 register values so this has never bitten. Signed-off-by: Ralf Baechle --- arch/mips/include/asm/mipsregs.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index 0ef30c81fea6..32ef8bec5c85 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -728,8 +728,8 @@ do { \ ".set\tmips64\n\t" \ "dmfc0\t%M0, " #source "\n\t" \ "dsll\t%L0, %M0, 32\n\t" \ - "dsrl\t%M0, %M0, 32\n\t" \ - "dsrl\t%L0, %L0, 32\n\t" \ + "dsra\t%M0, %M0, 32\n\t" \ + "dsra\t%L0, %L0, 32\n\t" \ ".set\tmips0" \ : "=r" (__val)); \ else \ @@ -737,8 +737,8 @@ do { \ ".set\tmips64\n\t" \ "dmfc0\t%M0, " #source ", " #sel "\n\t" \ "dsll\t%L0, %M0, 32\n\t" \ - "dsrl\t%M0, %M0, 32\n\t" \ - "dsrl\t%L0, %L0, 32\n\t" \ + "dsra\t%M0, %M0, 32\n\t" \ + "dsra\t%L0, %L0, 32\n\t" \ ".set\tmips0" \ : "=r" (__val)); \ local_irq_restore(__flags); \ -- 2.20.1