mirror of
https://frontier.innolan.net/github/amigaos-cross-toolchain6.git
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Factor out some functionality to separate file.
This commit is contained in:
Krystian Bacławski
+11
-114
@@ -1,115 +1,12 @@
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#!/usr/bin/env python2.7 -B
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from collections import namedtuple, defaultdict
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import inspect
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from collections import defaultdict
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import struct
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import sys
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import textwrap
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from objtools import util
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class HunkMap(object):
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# Any hunks that have the HUNKB_ADVISORY bit set will be ignored if they
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# aren't understood. When ignored, they're treated like HUNK_DEBUG hunks.
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# NOTE: this handling of HUNKB_ADVISORY started as of V39 dos.library! If
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# lading such executables is attempted under <V39 dos, it will fail with a
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# bad hunk type.
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HUNKB_ADVISORY = 29
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HUNKB_CHIP = 30
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HUNKB_FAST = 31
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HUNKF_ADVISORY = 1 << HUNKB_ADVISORY
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HUNKF_CHIP = 1 << HUNKB_CHIP
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HUNKF_FAST = 1 << HUNKB_FAST
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HUNK_UNIT = 999
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HUNK_NAME = 1000
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HUNK_CODE = 1001
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HUNK_DATA = 1002
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HUNK_BSS = 1003
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HUNK_RELOC32 = 1004
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HUNK_RELOC16 = 1005
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HUNK_RELOC8 = 1006
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HUNK_EXT = 1007
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HUNK_SYMBOL = 1008
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HUNK_DEBUG = 1009
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HUNK_END = 1010
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HUNK_HEADER = 1011
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HUNK_OVERLAY = 1013
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HUNK_BREAK = 1014
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HUNK_DREL32 = 1015
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HUNK_DREL16 = 1016
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HUNK_DREL8 = 1017
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HUNK_LIB = 1018
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HUNK_INDEX = 1019
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HUNK_RELOC32SHORT = 1020
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HUNK_RELRELOC32 = 1021
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HUNK_ABSRELOC16 = 1022
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HUNK_PPC_CODE = 1257
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HUNK_RELRELOC26 = 1260
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@classmethod
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def GetName(cls, number):
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number &= 0x1fffffff
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for name, value in inspect.getmembers(cls):
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if name.startswith('HUNK_'):
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if value == number:
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return name
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raise ValueError('Unknown Hunk: %d' % number)
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@classmethod
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def GetFlags(cls, number):
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flags = []
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for name, value in inspect.getmembers(cls):
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if name.startswith('HUNKF_'):
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if value & number:
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flags.append(name)
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return flags
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class HunkExtMap(object):
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EXT_SYMB = 0 # symbol table
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EXT_DEF = 1 # relocatable definition
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EXT_ABS = 2 # Absolute definition
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EXT_RES = 3 # no longer supported
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EXT_REF32 = 129 # 32 bit absolute reference to symbol
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EXT_COMMON = 130 # 32 bit absolute reference to COMMON block
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EXT_REF16 = 131 # 16 bit PC-relative reference to symbol
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EXT_REF8 = 132 # 8 bit PC-relative reference to symbol
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EXT_DEXT32 = 133 # 32 bit data relative reference
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EXT_DEXT16 = 134 # 16 bit data relative reference
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EXT_DEXT8 = 135 # 8 bit data relative reference
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EXT_RELREF32 = 136 # 32 bit PC-relative reference to symbol
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EXT_RELCOMMON = 137 # 32 bit PC-relative reference to COMMON block
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EXT_ABSREF16 = 138 # 16 bit absolute reference to symbol
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EXT_ABSREF8 = 139 # 8 bit absolute reference to symbol
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EXT_RELREF26 = 229
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@classmethod
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def GetName(cls, number):
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for name, value in inspect.getmembers(cls):
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if name.startswith('EXT_'):
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if value == number:
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return name
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raise ValueError('Unknown HunkExt: %d' % number)
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class Hunk(namedtuple('Hunk', 'name data flags')):
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def __repr__(self):
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if self.data:
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if self.flags:
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flags = ', flags=%s' % '|'.join(self.flags)
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else:
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flags = ''
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return '%s(%r%s)' % (self.name, self.data, flags)
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else:
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return self.name
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Header = namedtuple('Header', 'residents hunks first last specifiers')
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from objtools.hunk import (GetHunkName, GetHunkExtName, GetHunkFlags, Hunk,
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Header)
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class HunkParser(object):
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@@ -118,17 +15,17 @@ class HunkParser(object):
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self.index = 0
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def ReadLong(self):
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data = struct.unpack('>I', self.data[self.index:self.index + 4])[0]
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data = struct.unpack_from('>I', self.data, self.index)[0]
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self.index += 4
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return data
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def ReadWord(self):
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data = struct.unpack('>H', self.data[self.index:self.index + 2])[0]
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data = struct.unpack_from('>H', self.data, self.index)[0]
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self.index += 2
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return data
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def ReadInt(self):
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data = struct.unpack('>i', self.data[self.index:self.index + 4])[0]
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data = struct.unpack_from('>i', self.data, self.index)[0]
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self.index += 4
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return data
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@@ -176,7 +73,7 @@ class HunkParser(object):
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break
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length = (longs & 0xffffff) * 4
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extName = HunkExtMap.GetName(longs >> 24)
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extName = GetHunkExtName(longs >> 24)
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if extName in ['EXT_DEF', 'EXT_ABS', 'EXT_REL']:
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data = self.ReadSymbol(length)
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@@ -201,7 +98,7 @@ class HunkParser(object):
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hunkRef = self.ReadLong()
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offsets = [self.ReadLong() for i in range(longs)]
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relocs.update({hunkRef: offsets})
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relocs[hunkRef] = offsets
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return relocs
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@@ -217,7 +114,7 @@ class HunkParser(object):
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hunkRef = self.ReadWord()
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offsets = [self.ReadWord() for i in range(words)]
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relocs.update({hunkRef: offsets})
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relocs[hunkRef] = offsets
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if (self.index - start) & 3:
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self.index += 2
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@@ -255,8 +152,8 @@ class HunkParser(object):
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hunkId = self.ReadLong()
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try:
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flags = HunkMap.GetFlags(hunkId)
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name = HunkMap.GetName(hunkId)
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flags = GetHunkFlags(hunkId)
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name = GetHunkName(hunkId)
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except ValueError:
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print 'Parse error at position %d.' % self.index
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raise
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