jump.py revision 10543
15081Sgblack@eecs.umich.edu# Copyright (c) 2007 The Hewlett-Packard Development Company 25081Sgblack@eecs.umich.edu# All rights reserved. 35081Sgblack@eecs.umich.edu# 47087Snate@binkert.org# The license below extends only to copyright in the software and shall 57087Snate@binkert.org# not be construed as granting a license to any other intellectual 67087Snate@binkert.org# property including but not limited to intellectual property relating 77087Snate@binkert.org# to a hardware implementation of the functionality of the software 87087Snate@binkert.org# licensed hereunder. You may use the software subject to the license 97087Snate@binkert.org# terms below provided that you ensure that this notice is replicated 107087Snate@binkert.org# unmodified and in its entirety in all distributions of the software, 117087Snate@binkert.org# modified or unmodified, in source code or in binary form. 125081Sgblack@eecs.umich.edu# 137087Snate@binkert.org# Redistribution and use in source and binary forms, with or without 147087Snate@binkert.org# modification, are permitted provided that the following conditions are 157087Snate@binkert.org# met: redistributions of source code must retain the above copyright 167087Snate@binkert.org# notice, this list of conditions and the following disclaimer; 177087Snate@binkert.org# redistributions in binary form must reproduce the above copyright 187087Snate@binkert.org# notice, this list of conditions and the following disclaimer in the 197087Snate@binkert.org# documentation and/or other materials provided with the distribution; 207087Snate@binkert.org# neither the name of the copyright holders nor the names of its 215081Sgblack@eecs.umich.edu# contributors may be used to endorse or promote products derived from 227087Snate@binkert.org# this software without specific prior written permission. 235081Sgblack@eecs.umich.edu# 245081Sgblack@eecs.umich.edu# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 255081Sgblack@eecs.umich.edu# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 265081Sgblack@eecs.umich.edu# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 275081Sgblack@eecs.umich.edu# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 285081Sgblack@eecs.umich.edu# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 295081Sgblack@eecs.umich.edu# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 305081Sgblack@eecs.umich.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 315081Sgblack@eecs.umich.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 325081Sgblack@eecs.umich.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 335081Sgblack@eecs.umich.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 345081Sgblack@eecs.umich.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 355081Sgblack@eecs.umich.edu# 365081Sgblack@eecs.umich.edu# Authors: Gabe Black 375081Sgblack@eecs.umich.edu 385081Sgblack@eecs.umich.edumicrocode = ''' 395081Sgblack@eecs.umich.edudef macroop JMP_I 405081Sgblack@eecs.umich.edu{ 415081Sgblack@eecs.umich.edu # Make the default data size of jumps 64 bits in 64 bit mode 425081Sgblack@eecs.umich.edu .adjust_env oszIn64Override 435081Sgblack@eecs.umich.edu 445081Sgblack@eecs.umich.edu rdip t1 455081Sgblack@eecs.umich.edu limm t2, imm 465081Sgblack@eecs.umich.edu wrip t1, t2 475081Sgblack@eecs.umich.edu}; 485081Sgblack@eecs.umich.edu 495081Sgblack@eecs.umich.edudef macroop JMP_R 505081Sgblack@eecs.umich.edu{ 515081Sgblack@eecs.umich.edu # Make the default data size of jumps 64 bits in 64 bit mode 525081Sgblack@eecs.umich.edu .adjust_env oszIn64Override 535081Sgblack@eecs.umich.edu 545081Sgblack@eecs.umich.edu wripi reg, 0 555081Sgblack@eecs.umich.edu}; 565081Sgblack@eecs.umich.edu 575081Sgblack@eecs.umich.edudef macroop JMP_M 585081Sgblack@eecs.umich.edu{ 595081Sgblack@eecs.umich.edu # Make the default data size of jumps 64 bits in 64 bit mode 605081Sgblack@eecs.umich.edu .adjust_env oszIn64Override 615081Sgblack@eecs.umich.edu 625081Sgblack@eecs.umich.edu ld t1, seg, sib, disp 635081Sgblack@eecs.umich.edu wripi t1, 0 645081Sgblack@eecs.umich.edu}; 655081Sgblack@eecs.umich.edu 665081Sgblack@eecs.umich.edudef macroop JMP_P 675081Sgblack@eecs.umich.edu{ 685081Sgblack@eecs.umich.edu # Make the default data size of jumps 64 bits in 64 bit mode 695081Sgblack@eecs.umich.edu .adjust_env oszIn64Override 705081Sgblack@eecs.umich.edu 715081Sgblack@eecs.umich.edu rdip t7 725081Sgblack@eecs.umich.edu ld t1, seg, riprel, disp 735081Sgblack@eecs.umich.edu wripi t1, 0 745081Sgblack@eecs.umich.edu}; 756060Sgblack@eecs.umich.edu 766060Sgblack@eecs.umich.edudef macroop JMP_FAR_M 776060Sgblack@eecs.umich.edu{ 786060Sgblack@eecs.umich.edu limm t1, 0, dataSize=8 796060Sgblack@eecs.umich.edu limm t2, 0, dataSize=8 806060Sgblack@eecs.umich.edu lea t1, seg, sib, disp, dataSize=asz 816060Sgblack@eecs.umich.edu ld t2, seg, [1, t0, t1], dsz 826060Sgblack@eecs.umich.edu ld t1, seg, [1, t0, t1] 836060Sgblack@eecs.umich.edu br rom_label("jmpFarWork") 846060Sgblack@eecs.umich.edu}; 856060Sgblack@eecs.umich.edu 866060Sgblack@eecs.umich.edudef macroop JMP_FAR_P 876060Sgblack@eecs.umich.edu{ 886060Sgblack@eecs.umich.edu limm t1, 0, dataSize=8 896060Sgblack@eecs.umich.edu limm t2, 0, dataSize=8 906060Sgblack@eecs.umich.edu rdip t7, dataSize=asz 916060Sgblack@eecs.umich.edu lea t1, seg, riprel, disp, dataSize=asz 926060Sgblack@eecs.umich.edu ld t2, seg, [1, t0, t1], dsz 936060Sgblack@eecs.umich.edu ld t1, seg, [1, t0, t1] 946060Sgblack@eecs.umich.edu br rom_label("jmpFarWork") 956060Sgblack@eecs.umich.edu}; 966060Sgblack@eecs.umich.edu 976060Sgblack@eecs.umich.edudef macroop JMP_FAR_I 986060Sgblack@eecs.umich.edu{ 996060Sgblack@eecs.umich.edu # Put the whole far pointer into a register. 1006060Sgblack@eecs.umich.edu limm t2, imm, dataSize=8 1016060Sgblack@eecs.umich.edu # Figure out the width of the offset. 1026060Sgblack@eecs.umich.edu limm t3, dsz, dataSize=8 1036344Sgblack@eecs.umich.edu slli t3, t3, 3, dataSize=8 1047931Stharris@microsoft.com # Get the offset into t1. 1057931Stharris@microsoft.com mov t1, t0, t2 1067931Stharris@microsoft.com # Get the selector into t2. 1077931Stharris@microsoft.com srl t2, t2, t3, dataSize=8 1087931Stharris@microsoft.com mov t2, t0, t2, dataSize=2 1096060Sgblack@eecs.umich.edu br rom_label("jmpFarWork") 1106060Sgblack@eecs.umich.edu}; 1116060Sgblack@eecs.umich.edu 1126060Sgblack@eecs.umich.edudef rom 1136060Sgblack@eecs.umich.edu{ 1146060Sgblack@eecs.umich.edu extern jmpFarWork: 1156060Sgblack@eecs.umich.edu # t1 has the offset and t2 has the new selector. 1166060Sgblack@eecs.umich.edu # This is intended to run in protected mode. 1176060Sgblack@eecs.umich.edu andi t0, t2, 0xFC, flags=(EZF,), dataSize=2 11810474Sandreas.hansson@arm.com fault "std::make_shared<GeneralProtection>(0)", flags=(CEZF,) 1196060Sgblack@eecs.umich.edu andi t3, t2, 0xF8, dataSize=8 1206060Sgblack@eecs.umich.edu andi t0, t2, 0x4, flags=(EZF,), dataSize=2 1216060Sgblack@eecs.umich.edu br rom_local_label("farJmpGlobalDescriptor"), flags=(CEZF,) 1226060Sgblack@eecs.umich.edu ld t4, tsl, [1, t0, t3], dataSize=8, addressSize=8, atCPL0=True 1236060Sgblack@eecs.umich.edu br rom_local_label("farJmpProcessDescriptor") 1246060Sgblack@eecs.umich.edufarJmpGlobalDescriptor: 1256060Sgblack@eecs.umich.edu ld t4, tsg, [1, t0, t3], dataSize=8, addressSize=8, atCPL0=True 1266060Sgblack@eecs.umich.edufarJmpProcessDescriptor: 1276060Sgblack@eecs.umich.edu rcri t0, t4, 13, flags=(ECF,), dataSize=2 1286060Sgblack@eecs.umich.edu br rom_local_label("farJmpSystemDescriptor"), flags=(nCECF,) 1296060Sgblack@eecs.umich.edu chks t2, t4, CSCheck, dataSize=8 1306060Sgblack@eecs.umich.edu wrdl cs, t4, t2 1316060Sgblack@eecs.umich.edu wrsel cs, t2 1326060Sgblack@eecs.umich.edu wrip t0, t1 1336060Sgblack@eecs.umich.edu eret 1346060Sgblack@eecs.umich.edu 1356060Sgblack@eecs.umich.edufarJmpSystemDescriptor: 1366060Sgblack@eecs.umich.edu panic "Far jumps to system descriptors aren't implemented" 1376060Sgblack@eecs.umich.edu eret 1386060Sgblack@eecs.umich.edu}; 1396060Sgblack@eecs.umich.edu 1406060Sgblack@eecs.umich.edudef macroop JMP_FAR_REAL_M 1416060Sgblack@eecs.umich.edu{ 1426060Sgblack@eecs.umich.edu lea t1, seg, sib, disp, dataSize=asz 1436060Sgblack@eecs.umich.edu ld t2, seg, [1, t0, t1], dsz 1446060Sgblack@eecs.umich.edu ld t1, seg, [1, t0, t1] 1456060Sgblack@eecs.umich.edu zexti t3, t1, 15, dataSize=8 1466060Sgblack@eecs.umich.edu slli t3, t3, 4, dataSize=8 1476060Sgblack@eecs.umich.edu wrsel cs, t1, dataSize=2 1486060Sgblack@eecs.umich.edu wrbase cs, t3 1496060Sgblack@eecs.umich.edu wrip t0, t2, dataSize=asz 1506060Sgblack@eecs.umich.edu}; 1516060Sgblack@eecs.umich.edu 1526060Sgblack@eecs.umich.edudef macroop JMP_FAR_REAL_P 1536060Sgblack@eecs.umich.edu{ 1546060Sgblack@eecs.umich.edu panic "Real mode far jump executed in 64 bit mode!" 1556060Sgblack@eecs.umich.edu}; 1566060Sgblack@eecs.umich.edu 1576060Sgblack@eecs.umich.edudef macroop JMP_FAR_REAL_I 1586060Sgblack@eecs.umich.edu{ 1596060Sgblack@eecs.umich.edu # Put the whole far pointer into a register. 1606060Sgblack@eecs.umich.edu limm t2, imm, dataSize=8 1616060Sgblack@eecs.umich.edu # Figure out the width of the offset. 1626060Sgblack@eecs.umich.edu limm t3, dsz, dataSize=8 1636344Sgblack@eecs.umich.edu slli t3, t3, 3, dataSize=8 1646060Sgblack@eecs.umich.edu # Get the selector into t1. 16510543Sgabeblack@google.com srl t1, t2, t3, dataSize=8 1666060Sgblack@eecs.umich.edu mov t1, t0, t1, dataSize=2 1676060Sgblack@eecs.umich.edu # And get the offset into t2 1686060Sgblack@eecs.umich.edu mov t2, t0, t2 16910543Sgabeblack@google.com slli t3, t1, 4, dataSize=8 1706060Sgblack@eecs.umich.edu wrsel cs, t1, dataSize=2 1716060Sgblack@eecs.umich.edu wrbase cs, t3 1726060Sgblack@eecs.umich.edu wrip t0, t2, dataSize=asz 1736060Sgblack@eecs.umich.edu}; 1745081Sgblack@eecs.umich.edu''' 175