a2d246b6b8
This patch takes quite a large step in transitioning from the ad-hoc RefCountingPtr to the c++11 shared_ptr by adopting its use for all Faults. There are no changes in behaviour, and the code modifications are mostly just replacing "new" with "make_shared".
175 lines
5.3 KiB
Python
175 lines
5.3 KiB
Python
# Copyright (c) 2007 The Hewlett-Packard Development Company
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# All rights reserved.
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Gabe Black
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microcode = '''
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def macroop JMP_I
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{
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# Make the default data size of jumps 64 bits in 64 bit mode
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.adjust_env oszIn64Override
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rdip t1
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limm t2, imm
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wrip t1, t2
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};
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def macroop JMP_R
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{
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# Make the default data size of jumps 64 bits in 64 bit mode
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.adjust_env oszIn64Override
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wripi reg, 0
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};
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def macroop JMP_M
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{
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# Make the default data size of jumps 64 bits in 64 bit mode
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.adjust_env oszIn64Override
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ld t1, seg, sib, disp
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wripi t1, 0
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};
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def macroop JMP_P
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{
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# Make the default data size of jumps 64 bits in 64 bit mode
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.adjust_env oszIn64Override
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rdip t7
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ld t1, seg, riprel, disp
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wripi t1, 0
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};
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def macroop JMP_FAR_M
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{
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limm t1, 0, dataSize=8
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limm t2, 0, dataSize=8
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lea t1, seg, sib, disp, dataSize=asz
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ld t2, seg, [1, t0, t1], dsz
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ld t1, seg, [1, t0, t1]
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br rom_label("jmpFarWork")
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};
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def macroop JMP_FAR_P
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{
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limm t1, 0, dataSize=8
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limm t2, 0, dataSize=8
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rdip t7, dataSize=asz
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lea t1, seg, riprel, disp, dataSize=asz
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ld t2, seg, [1, t0, t1], dsz
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ld t1, seg, [1, t0, t1]
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br rom_label("jmpFarWork")
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};
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def macroop JMP_FAR_I
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{
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# Put the whole far pointer into a register.
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limm t2, imm, dataSize=8
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# Figure out the width of the offset.
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limm t3, dsz, dataSize=8
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slli t3, t3, 3, dataSize=8
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# Get the offset into t1.
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mov t1, t0, t2
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# Get the selector into t2.
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srl t2, t2, t3, dataSize=8
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mov t2, t0, t2, dataSize=2
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br rom_label("jmpFarWork")
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};
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def rom
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{
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extern jmpFarWork:
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# t1 has the offset and t2 has the new selector.
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# This is intended to run in protected mode.
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andi t0, t2, 0xFC, flags=(EZF,), dataSize=2
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fault "std::make_shared<GeneralProtection>(0)", flags=(CEZF,)
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andi t3, t2, 0xF8, dataSize=8
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andi t0, t2, 0x4, flags=(EZF,), dataSize=2
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br rom_local_label("farJmpGlobalDescriptor"), flags=(CEZF,)
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ld t4, tsl, [1, t0, t3], dataSize=8, addressSize=8, atCPL0=True
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br rom_local_label("farJmpProcessDescriptor")
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farJmpGlobalDescriptor:
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ld t4, tsg, [1, t0, t3], dataSize=8, addressSize=8, atCPL0=True
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farJmpProcessDescriptor:
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rcri t0, t4, 13, flags=(ECF,), dataSize=2
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br rom_local_label("farJmpSystemDescriptor"), flags=(nCECF,)
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chks t2, t4, CSCheck, dataSize=8
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wrdl cs, t4, t2
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wrsel cs, t2
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wrip t0, t1
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eret
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farJmpSystemDescriptor:
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panic "Far jumps to system descriptors aren't implemented"
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eret
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};
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def macroop JMP_FAR_REAL_M
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{
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lea t1, seg, sib, disp, dataSize=asz
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ld t2, seg, [1, t0, t1], dsz
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ld t1, seg, [1, t0, t1]
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zexti t3, t1, 15, dataSize=8
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slli t3, t3, 4, dataSize=8
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wrsel cs, t1, dataSize=2
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wrbase cs, t3
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wrip t0, t2, dataSize=asz
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};
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def macroop JMP_FAR_REAL_P
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{
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panic "Real mode far jump executed in 64 bit mode!"
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};
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def macroop JMP_FAR_REAL_I
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{
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# Put the whole far pointer into a register.
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limm t2, imm, dataSize=8
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# Figure out the width of the offset.
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limm t3, dsz, dataSize=8
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slli t3, t3, 3, dataSize=8
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# Get the selector into t1.
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sll t1, t2, t3, dataSize=8
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mov t1, t0, t1, dataSize=2
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# And get the offset into t2
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mov t2, t0, t2
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slli t3, t3, 4, dataSize=8
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wrsel cs, t1, dataSize=2
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wrbase cs, t3
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wrip t0, t2, dataSize=asz
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};
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'''
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