Gabe Black
a56c651980
Predecoder: Clear out predecoder state on an ITLB fault.
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--HG--
extra : convert_revision : 68f8ff778dbd28ade5070edf5a7d662e7bf0045a
2007-10-02 22:21:38 -07:00
Gabe Black
47b0242618
Fixed immediate byte accounting bug.
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--HG--
extra : convert_revision : ee5275da14a2923b9a525ae5b5c582c15df4608a
2007-07-22 02:34:52 +00:00
Gabe Black
ea70e6d6da
Make branches work by repopulating the predecoder every time through. This is probably fine as far as the predecoder goes, but the simple cpu might want to not refetch something it already has. That reintroduces the self modifying code problem though.
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--HG--
extra : convert_revision : 802197e65f8dc1ad657c6b346091e03cb563b0c0
2007-06-19 18:17:34 +00:00
Gabe Black
cd3fee1b81
Put the mode in the ExtMachInst.
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--HG--
extra : convert_revision : 7fc6567ab3d35c06901e6c8a0435f7cab819e17e
2007-06-14 13:50:58 +00:00
Gabe Black
cd8f604cc9
Seperate the pc-pc and the pc of the incoming bytes, and get rid of the "moreBytes" which just takes a MachInst.
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src/arch/x86/predecoder.cc:
Seperate the pc-pc and the pc of the incoming bytes, and get rid of the "moreBytes" which just takes a MachInst. Also make the "opSize" field describe the number of bytes and not the log of the number of bytes.
--HG--
extra : convert_revision : 3a5ec7053ec69c5cba738a475d8b7fd9e6e6ccc0
2007-06-13 20:09:03 +00:00
Gabe Black
7860c045e2
x86 work that hadn't been checked in.
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src/arch/x86/isa/decoder/one_byte_opcodes.isa:
Give the "MOV" instruction the format of it's arguments. This will likely need to be completely overhauled in the near future.
src/arch/x86/predecoder.cc:
src/arch/x86/predecoder.hh:
Make the predecoder explicitly reset itself rather than counting on it happening naturally.
src/arch/x86/predecoder_tables.cc:
Fix the immediate size table
src/arch/x86/regfile.cc:
nextnpc is bogus
--HG--
extra : convert_revision : 0926701fedaab41817e64bb05410a25174484a5a
2007-05-31 13:50:35 +00:00
Gabe Black
75e8838ba4
Clean up the code a little, fix (I think) a perceived problem with immediate sizes, and sign extend the 32-bit-acting-like-64-bit-immediates.
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--HG--
extra : convert_revision : e59b747198cc79d50045bd2dc45b2e2b97bbffcc
2007-04-06 15:19:23 +00:00
Gabe Black
0a80d06dea
Break out the one and two byte opcodes into different files. Also change what bits decode is done on to reflect where clumps of instructions are.
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--HG--
extra : convert_revision : 8768676eac25e6a4f0dc50ce2dc576bdcdd6e025
2007-03-21 19:19:53 +00:00
Gabe Black
9ad3f1e479
Refactor things a little.
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--HG--
extra : convert_revision : 8167455ffc05130d4afcc68466879c7c439bee57
2007-03-15 19:16:39 +00:00
Gabe Black
ae9bed4f8f
Split the x86 "process" predecoder method into it's own file.
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--HG--
extra : convert_revision : 88185e592df2a7527d36efcce7376fb05f469cbc
2007-03-15 19:16:37 +00:00
Gabe Black
6cdd434f7f
Changed warns to DPRINTFs and multiply by 8 where needed.
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--HG--
extra : convert_revision : 9db0bc2420ceb5828a79881fa0b420a2d5e5f358
2007-03-15 16:13:40 +00:00
Gabe Black
075df1469f
Added immediate value support, and fixed alot of bugs. This won't support 3 byte opcodes.
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--HG--
extra : convert_revision : 4c79bff2592a668e1154916875f019ecafe67022
2007-03-15 15:29:39 +00:00
Gabe Black
a2b56088fb
Make the predecoder an object with it's own switched header file. Start adding predecoding functionality to x86.
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src/arch/SConscript:
src/arch/alpha/utility.hh:
src/arch/mips/utility.hh:
src/arch/sparc/utility.hh:
src/cpu/base.hh:
src/cpu/o3/fetch.hh:
src/cpu/o3/fetch_impl.hh:
src/cpu/simple/atomic.cc:
src/cpu/simple/base.cc:
src/cpu/simple/base.hh:
src/cpu/static_inst.hh:
src/arch/alpha/predecoder.hh:
src/arch/mips/predecoder.hh:
src/arch/sparc/predecoder.hh:
Make the predecoder an object with it's own switched header file.
--HG--
extra : convert_revision : 77206e29089130e86b97164c30022a062699ba86
2007-03-15 02:47:42 +00:00
