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https://github.com/hedge-dev/XenonRecomp.git
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Initial Commit
This commit is contained in:
Sajid
270
thirdparty/capstone/suite/synctools/disassemblertables-arch.py
vendored
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270
thirdparty/capstone/suite/synctools/disassemblertables-arch.py
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#!/usr/bin/python
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# convert LLVM GenDisassemblerTables.inc for Capstone disassembler.
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# this just adds a header
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# by Nguyen Anh Quynh, 2019
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import sys
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if len(sys.argv) == 1:
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print("Syntax: %s <GenDisassemblerTables.inc> <arch>" %sys.argv[0])
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sys.exit(1)
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f = open(sys.argv[1])
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lines = f.readlines()
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f.close()
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print("/* Capstone Disassembly Engine, http://www.capstone-engine.org */")
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print("/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2019 */")
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print("/* Automatically generated file, do not edit! */\n")
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print('#include "../../MCInst.h"')
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print('#include "../../LEB128.h"')
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print("")
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print("""
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// Helper function for extracting fields from encoded instructions.
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//#if defined(_MSC_VER) && !defined(__clang__)
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//__declspec(noinline)
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//#endif
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#define FieldFromInstruction(fname, InsnType) \\
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static InsnType fname(InsnType insn, unsigned startBit, unsigned numBits) \\
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{ \\
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InsnType fieldMask; \\
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if (numBits == sizeof(InsnType) * 8) \\
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fieldMask = (InsnType)(-1LL); \\
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else \\
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fieldMask = (((InsnType)1 << numBits) - 1) << startBit; \\
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return (insn & fieldMask) >> startBit; \\
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}
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""")
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# extract text between <>
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# printSVERegOp<'q'>
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def extract_brackets(line):
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return line[line.index('<')+1 : line.index('>')]
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# delete text between <>, including <>
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# printSVERegOp<'q'>
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def del_brackets(line):
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return line[:line.index('<')] + line[line.index('>') + 1:]
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# skip printing some lines?
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skip_print = True
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# adding slash at the end of the line for C macro?
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adding_slash = False
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# skip LLVM_DEBUG
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llvm_debug = False
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def print_line(line):
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if skip_print is True:
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return
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if adding_slash:
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# skip blank line
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if (len(line.strip()) == 0):
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return
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# // must be handled
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if '//' in line:
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line = line.replace('//', '/*')
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line += ' */'
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print(line + ' \\')
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else:
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print(line)
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for line in lines:
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line2 = line.rstrip()
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if '#include ' in line2:
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continue
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# skip until the first decoder table
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elif skip_print and 'static const uint8_t DecoderTable' in line2:
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skip_print = False
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elif 'end namespace llvm' in line2:
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# done
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break
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elif 'llvm_unreachable' in line2:
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line2 = line2.replace('llvm_unreachable', '/* llvm_unreachable')
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line2 += '*/ '
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if '"Invalid index!"' in line2:
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pass
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#line2 += '\n return true;'
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elif 'Bits[' in line2:
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if sys.argv[2] == 'ARM':
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line2 = line2.replace('Bits[', 'ARM_getFeatureBits(MI->csh->mode, ')
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line2 = line2.replace(']', ')')
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elif sys.argv[2] == 'AArch64':
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line2 = line2.replace('Bits[', 'AArch64_getFeatureBits(')
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line2 = line2.replace(']', ')')
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elif 'static bool checkDecoderPredicate(unsigned Idx, const FeatureBitset &Bits) {' in line2:
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line2 = 'static bool checkDecoderPredicate(unsigned Idx, MCInst *MI)\n{'
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elif 'checkDecoderPredicate(PIdx, ' in line2:
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line2 = line2.replace(', Bits)', ', MI)')
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elif 'template <typename InsnType>' in line2:
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continue
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elif 'static DecodeStatus decodeToMCInst' in line2:
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line2 = '#define DecodeToMCInst(fname, fieldname, InsnType) \\\n' + \
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'static DecodeStatus fname(DecodeStatus S, unsigned Idx, InsnType insn, MCInst *MI, \\\n' + \
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'\t\tuint64_t Address, bool *Decoder) \\\n{'
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adding_slash = True
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elif 'fieldFromInstruction' in line2:
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line2 = line2.replace('fieldFromInstruction', 'fieldname')
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if 'InsnType FieldValue' in line2:
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line2 = line2.replace('InsnType ', '')
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if 'insertBits(tmp,' in line2:
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line2 = line2.replace('insertBits(', '')
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tmpLn = line2.split(',')
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line2 = tmpLn[0] + ' |=' + tmpLn[1] + ',' + tmpLn[2] + ',' + tmpLn[3] + ' <<' + tmpLn[4] + ';'
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elif 'DecodeComplete = true;' in line2:
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# dead code
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continue
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elif 'bool &DecodeComplete) {' in line2:
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continue
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elif line2 == '}':
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if adding_slash:
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adding_slash = False
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elif 'static DecodeStatus decodeInstruction' in line2:
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line2 = '#define DecodeInstruction(fname, fieldname, decoder, InsnType) \\\n' + \
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'static DecodeStatus fname(const uint8_t DecodeTable[], MCInst *MI, \\\n' + \
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'\t\tInsnType insn, uint64_t Address) \\\n{ \\\n' + \
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' unsigned Start, Len, NumToSkip, PIdx, Opc, DecodeIdx; \\\n' + \
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' InsnType Val, FieldValue, PositiveMask, NegativeMask; \\\n' + \
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' bool Pred, Fail, DecodeComplete = true; \\\n' + \
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' uint32_t ExpectedValue;'
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adding_slash = True
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print_line(line2)
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# skip printing few lines
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skip_print = True
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elif 'const MCSubtargetInfo &STI' in line2:
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skip_print = False
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# skip this line
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continue
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elif 'Bits = STI.getFeatureBits()' in line2:
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# skip this line
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continue
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elif 'errs() << ' in line2:
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continue
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elif 'unsigned Start =' in line2:
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line2 = line2.replace('unsigned ', '')
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elif 'unsigned Len =' in line2:
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line2 = line2.replace('unsigned ', '')
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elif 'unsigned Len;' in line2:
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continue
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elif 'MCInst TmpMI;' in line2:
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continue
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elif 'bool Pred;' in line2:
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continue
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elif 'bool DecodeComplete;' in line2:
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continue
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elif 'unsigned NumToSkip =' in line2:
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line2 = line2.replace('unsigned ', '')
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elif 'unsigned PIdx =' in line2:
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line2 = line2.replace('unsigned ', '')
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elif 'unsigned Opc =' in line2:
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line2 = line2.replace('unsigned ', '')
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elif 'unsigned DecodeIdx =' in line2:
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line2 = line2.replace('unsigned ', '')
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elif 'InsnType Val =' in line2:
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line2 = line2.replace('InsnType ', '')
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elif 'bool Fail' in line2:
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line2 = line2.replace('bool ', '')
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elif 'InsnType PositiveMask =' in line2:
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line2 = line2.replace('InsnType ', '')
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elif 'InsnType NegativeMask =' in line2:
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line2 = line2.replace('InsnType ', '')
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elif 'InsnType ExpectedValue' in line2:
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line2 = line2.replace('InsnType ', '')
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elif 'ptrdiff_t Loc = ' in line2:
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continue
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elif 'LLVM_DEBUG(' in line2:
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# just this line?
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if ');' in line2:
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continue
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skip_print = True
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llvm_debug = True
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continue
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elif skip_print and llvm_debug and ');' in line2:
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llvm_debug = False
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skip_print = False
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continue
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elif 'decodeToMCInst(' in line2:
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line2 = line2.replace('decodeToMCInst', 'decoder')
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line2 = line2.replace('DecodeComplete);', '&DecodeComplete);')
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line2 = line2.replace(', DisAsm', '')
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line2 = line2.replace(', TmpMI', ', MI')
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elif 'TmpMI.setOpcode(Opc);' in line2:
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line2 = ' MCInst_setOpcode(MI, Opc);'
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elif 'MI.setOpcode(Opc);' in line2:
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line2 = ' MCInst_setOpcode(MI, Opc);'
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elif 'MI.clear();' in line2:
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line2 = ' MCInst_clear(MI);'
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elif 'assert(' in line2:
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line2 = line2.replace('assert(', '/* assert(')
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line2 += ' */'
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elif 'Check(S, ' in line2:
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line2 = line2.replace('Check(S, ', 'Check(&S, ')
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if 'DecodeImm8OptLsl<' in line2:
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param = extract_brackets(line2)
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line2 = del_brackets(line2)
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line2 = line2.replace(', Decoder)', ', Decoder, %s)' %param)
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elif 'DecodeSImm<' in line2:
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param = extract_brackets(line2)
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line2 = del_brackets(line2)
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line2 = line2.replace(', Decoder)', ', Decoder, %s)' %param)
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elif 'DecodeMatrixTile<' in line2:
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param = extract_brackets(line2)
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line2 = del_brackets(line2)
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line2 = line2.replace(', Decoder)', ', Decoder, %s)' %param)
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if 'DecodeComplete = false; ' in line2:
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line2 = line2.replace('DecodeComplete = false; ', '')
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elif 'decodeUImmOperand<' in line2 or 'decodeSImmOperand<' in line2 :
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# decodeUImmOperand<5>(MI, tmp, Address, Decoder)
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param = extract_brackets(line2)
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line2 = del_brackets(line2)
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line2 = line2.replace(', Decoder)', ', Decoder, %s)' %param)
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elif 'MI.addOperand(MCOperand::createImm(tmp));' in line2:
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line2 = ' MCOperand_CreateImm0(MI, tmp);'
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elif 'MI = TmpMI;' in line2:
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line2 = ''
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#line2 = line2.replace('TmpMI', '&TmpMI')
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elif 'using TmpType = std::conditional' in line2:
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continue
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elif 'TmpType tmp;' in line2:
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line2 = line2.replace('TmpType', 'InsnType')
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line2 = line2.replace('::', '_')
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print_line(line2)
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if sys.argv[2] == 'ARM':
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print("""
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FieldFromInstruction(fieldFromInstruction_2, uint16_t)
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DecodeToMCInst(decodeToMCInst_2, fieldFromInstruction_2, uint16_t)
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DecodeInstruction(decodeInstruction_2, fieldFromInstruction_2, decodeToMCInst_2, uint16_t)
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FieldFromInstruction(fieldFromInstruction_4, uint32_t)
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DecodeToMCInst(decodeToMCInst_4, fieldFromInstruction_4, uint32_t)
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DecodeInstruction(decodeInstruction_4, fieldFromInstruction_4, decodeToMCInst_4, uint32_t)
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""")
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if sys.argv[2] in ('AArch64', 'PPC'):
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print("""
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FieldFromInstruction(fieldFromInstruction_4, uint32_t)
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DecodeToMCInst(decodeToMCInst_4, fieldFromInstruction_4, uint32_t)
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DecodeInstruction(decodeInstruction_4, fieldFromInstruction_4, decodeToMCInst_4, uint32_t)
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""")
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