From a59d219989ec048c16b5bcb14272b1eb09a1cde7 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Wed, 2 Jun 2010 12:58:00 -0500 Subject: ARM: Add a bit to the ExtMachInst to select thumb mode. --- src/arch/arm/predecoder.hh | 1 + src/arch/arm/types.hh | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) (limited to 'src/arch') diff --git a/src/arch/arm/predecoder.hh b/src/arch/arm/predecoder.hh index bd4a7b03b..b21b77320 100644 --- a/src/arch/arm/predecoder.hh +++ b/src/arch/arm/predecoder.hh @@ -73,6 +73,7 @@ namespace ArmISA void moreBytes(Addr pc, Addr fetchPC, MachInst inst) { emi = inst; + emi.thumb = (pc & (ULL(1) << PcTBitShift)); emi.sevenAndFour = bits(inst, 7) && bits(inst, 4); emi.isMisc = (bits(inst, 24, 23) == 0x2 && bits(inst, 20) == 0); } diff --git a/src/arch/arm/types.hh b/src/arch/arm/types.hh index e0b3951b9..456d65ce0 100644 --- a/src/arch/arm/types.hh +++ b/src/arch/arm/types.hh @@ -1,4 +1,16 @@ /* + * Copyright (c) 2010 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * * Copyright (c) 2007-2008 The Florida State University * All rights reserved. * @@ -39,6 +51,10 @@ namespace ArmISA typedef uint32_t MachInst; BitUnion64(ExtMachInst) + // Bitfields to select mode. + Bitfield<36> thumb; + Bitfield<35> bigThumb; + // Made up bitfields that make life easier. Bitfield<33> sevenAndFour; Bitfield<32> isMisc; -- cgit v1.2.3