616 lines
21 KiB
Plaintext
616 lines
21 KiB
Plaintext
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{
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.sob linker
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2009
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April
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10 Successfully linked two test programs
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15 SOB1 format:
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#args in exported pubs now just one byte
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added byte to imports for possible future use with object "pointers"
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rearranged fields in SOB file header so that longs are long-aligned in memory
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June
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9 Sphinxified
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timestamp comparison
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12 Removed /s and /t options
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18 Don't stop on first out-of-date error.
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To do:
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removal of duplicate sobs
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Usage: link sobname [options]
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sobname is name of .sob file, with or without .sob suffix.
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Options start with / or - and are case-insensitive:
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/v <n> -- Sets verbosity level. Higher values of n => more verbose. Default is 0.
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SOB file format
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0 4 bytes: SOB file format version #
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4 4 bytes: OBJ timestamp or version
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8 4 bytes: hash of OBJ's binary code.
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12 2 bytes: NUMEXPORTS
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14 2 bytes: EXPORTSIZE
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16 2 bytes: NUMIMPORTS
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18 2 bytes: IMPORTSIZE
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20 2 bytes: OBJBINSIZE (this is always a multiple of 4)
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22 1 byte: checksum
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23 1 byte: reserved
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24 2 bytes: size of OBJ's VAR space.
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26 EXPORTSIZE bytes: exported symbols: CONs, PUBs, maybe PRIs.
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IMPORTSIZE bytes: OBJ's sub-OBJs.
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OBJBINSIZE bytes: the compiled OBJ: header followed by methods.
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Export record format
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name + null + 0 + 4-byte int CON int
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name + null + 1 + 4-byte float CON float
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name + null + 2 + index + #args PUB
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name + null + 3 + index + #args PRI (not exported)
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Import record format
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name + null + 2-byte count + reserved
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Export and import names are uppercase. Import name must not include ".SOB" or other suffix.
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}
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SIZEOFSOBHEADER = 26
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obj
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term: "isxtv"
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fs[2]: "sxfile"
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str: "stringx"
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pub Main | err
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err := \Try
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if err
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if err > 0
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term.str( err )
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else
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term.str( string("Error ") )
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term.dec( err )
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term.out( 13 )
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fs[0].Close
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fs[0].Open( string("sphinx.bin"), "R" )
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fs[0].Execute( 0 )
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dat
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STACKSPACE long 500 ' in bytes; must be multiple of 4
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TABLESPACE long 1000 ' in bytes; must be multiple of 4
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WORKSPACE long 0
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verbosity byte 0
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outOfDate byte 0
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ignoreOutOfDate byte 0
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pri Try | nArgs, pTable, pWork, l, p, totalVarSize
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fs.Open( string("args.d8a"), "R" )
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nArgs := fs.ReadByte
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ifnot nArgs--
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abort string("usage: link sobname [options]")
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fs.ReadStringUpperCase( @sobName, MAXFILENAMELENGTH )
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l := strsize( @sobName )
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if sobName[l-4] == "." and sobName[l-3] == "S" and sobName[l-2] == "O" and sobName[l-1] == "B"
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sobName[l-4]~
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if strsize( @sobName ) > 8
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term.str( @sobName )
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abort string(" -- sobname too long")
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str.Copy( @outputName, @sobName )
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' Process command line arguments
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repeat while nArgs--
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fs.ReadStringUpperCase( @stringBuffer, 20 )
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if stringBuffer[0] == "-"
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stringBuffer[0] := "/"
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if strcomp( @stringBuffer, string("/V") )
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ifnot nArgs--
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abort string("/V must be followed by a number")
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verbosity := fs.ReadNumber
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elseif strcomp( @stringBuffer, string("/I") )
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ignoreOutOfDate~~
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{
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elseif strcomp( @stringBuffer, string("/S") )
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ifnot nArgs--
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abort string("/S must be followed by a number")
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STACKSPACE := fs.ReadNumber
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if STACKSPACE & 3
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abort string("/S argument must be a multiple of 4")
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elseif strcomp( @stringBuffer, string("/T") )
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ifnot nArgs--
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abort string("/T must be followed by a number")
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TABLESPACE := fs.ReadNumber
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if TABLESPACE & 3
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abort string("/T argument must be a multiple of 4")
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}
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'else
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'ignore
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fs.Close
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if verbosity => 1
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term.str( string("link 090627", 13) )
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pTable := word[$000a] + STACKSPACE
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pWork := pTable + TABLESPACE
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WORKSPACE := 32768-pWork
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if verbosity => 2
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term.dec( WORKSPACE )
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term.str( string(" bytes of work space", 13) )
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if WORKSPACE =< 0
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abort string("No work space")
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SobInit( pTable, TABLESPACE )
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AddSob( @sobName )
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ProcessSob( pTable, true )
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checksum~
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totalVarSize := ComputeAddressAndTotalVarSize( pTable, $0010 )
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word[@header][3] := $0010
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word[@header[$08]] := objBinEndAddress
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word[@header[$0a]] := objBinEndAddress + totalVarSize + 8
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word[@header[$0c]] := firstPubOffset + $0010
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word[@header[$0e]] := word[@header[$0a]] + firstPubLocalsSize + (firstPubNumArgs + 1) << 2
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AddToChecksum( @header, $10 )
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AddToChecksum( @footer, 8 )
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header[5] := -checksum
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if verbosity => 3
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p := pTable
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repeat while p
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term.str( word[p +_pName] )
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term.out( " " )
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term.hex( word[p +_startAddress], 4 )
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term.out( " " )
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term.dec( word[p +_totalVarSize] )
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term.out( " " )
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term.hex( byte[p +_checksum], 2 )
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term.out( 13 )
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p := word[p +_pNextSorted]
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if not outOfDate or ignoreOutOfDate
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str.Append( @outputName, string(".BIN") )
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if verbosity => 2
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term.str( string("Writing ") )
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term.str( @outputName )
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term.out( 13 )
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WriteBinaryFile( @outputName, pTable, pWork, WORKSPACE )
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else
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term.str( string("No .bin written", 13) )
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pri WriteBinaryFile( pFilename, pSob, pBuff, buffsize ) | n, p, pImports, pCounts, interObjectOffset, varOffset
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{{
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Go down the priority-sorted list of sobs assigning them hub addresses such that they follow one
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another in memory. On the way back up the list, compute each sob's total VAR size (the sob's
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own VARs plus its imported sobs' VARs.)
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Also updates checksum.
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Return value is the current sob's total VAR size. Only the top object's return value is looked at.
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}}
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fs[0].Open( pFilename, "W" )
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fs[0].Write( @header, 16 )
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repeat while pSob
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str.Copy( @stringBuffer, word[pSob +_pName] )
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str.Append( @stringBuffer, string(".SOB") )
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if verbosity => 2
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term.str( @stringBuffer )
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term.str( string(" -- copying", 13) )
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n := word[pSob +_objBinSize]
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if n > buffsize
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abort string("work area too small")
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fs[1].Open( @stringBuffer, "R" )
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fs[1].SkipBytes( SIZEOFSOBHEADER + word[pSob +_exportImportSize] )
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fs[1].Read( pBuff, n )
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fs[1].Close
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p := pBuff + byte[pBuff][2] << 2 ' byte[2] is index of 1st obj entry; multiply by 4 bytes/entry
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varOffset := word[pSob +_varSize]
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pImports := word[pSob +_pImports]
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pCounts := word[pSob +_pCounts]
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repeat word[pSob +_nImports]
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interObjectOffset := word[ word[pImports] +_startAddress] - word[pSob +_startAddress]
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repeat word[pCounts]
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word[p] := interObjectOffset
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p += 2
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word[p] := varOffset
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p += 2
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varOffset += word[ word[pImports] +_totalVarSize]
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pImports += 2
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pCounts += 2
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fs[0].Write( pBuff, n )
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pSob := word[pSob +_pNextSorted]
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fs[0].Close
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{{
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objBinEndAddress := address ' end address will point just beyond the last obj in hub memory.
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' Here we're just overwriting as we go and keeping the last one.
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ComputeAddressAndTotalVarSize( word[p +_pNextSorted], address )
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checksum += byte[p +_checksum] ' this is the partial checksum of the obj (doesn't count its sub-object table because
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' sub-object links are not known until link time (i.e., now))
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totalVarSize := word[p +_varSize]
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pImports := word[p +_pImports]
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pCounts := word[p +_pCounts]
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repeat word[p +_nImports] ' for each import, add the import's VAR size multiplied by its count
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interObjectOffset := word[ word[pImports] +_startAddress] - word[p +_startAddress]
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repeat word[pCounts]
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AddToChecksum( @totalVarSize, 2 ) ' checksum needs to include this half of an object table entry
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AddToChecksum( @interObjectOffset, 2 ) ' and this other half of an object table entry
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totalVarSize += word[ word[pImports] +_totalVarSize]
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pImports += 2
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pCounts += 2
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word[p +_totalVarSize] := totalVarSize
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}}
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var
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word firstPubLocalsSize
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word firstPubOffset
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word firstPubNumArgs
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word objBinEndAddress
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byte checksum
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long clk_freq
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long xin_freq
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long clk_mode
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long free
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long stack
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pri ReadExports( numExports ) | firstPub, type, val, index, nArgs, i, p, f, frequency
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f~
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firstPub~~
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stack := 16
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frequency := 12_000_000
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repeat numExports
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fs.ReadStringUpperCase( @stringBuffer, MAXEXPORTLENGTH )
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case type := fs.ReadByte
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0, 1: ' int or float CON
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val := fs.ReadLong
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2, 3: ' PUB or PRI
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index := fs.ReadByte
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nArgs := fs.ReadByte
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if firstPub~
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firstPubNumArgs := nArgs
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repeat i from 0 to 4
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if strcomp( @stringBuffer, @@ptrs[i] )
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if type
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term.str( @stringBuffer )
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abort string(" -- not an int CON")
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clk_freq[i] := val
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f |= |< i
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f &= 7
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if clk_mode & 3
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f |= 8
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case f ' four bits: rc|clkmode|xinfreq|clkfreq
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%0000: ' none of clkmode/xinfreq/clkfreq specified
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%0001..%0011: abort string("_CLKMODE must be specified")
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%0100: abort string("_CLKFREQ or _XINFREQ must be specified")
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%0101: frequency := clk_freq
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%0110: frequency := xin_freq * ((clk_mode >> 6) #> 1)
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%0111: if clk_freq <> xin_freq * ((clk_mode >> 6) #> 1)
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abort string("conflicting _CLKFREQ and _XINFREQ")
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%1000..%1011: ' these cases shouldn't happen
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%1100: ' this case is OK
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%1101..%1111: abort string("RCFAST/SLOW incompatible with _CLKFREQ/_XINFREQ")
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long[@header] := frequency
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header[4] := ComputeClkmodeByte( clk_mode )
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pri ComputeClkmodeByte( mode ) : m | b1, b2, i
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{
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rcfast $001 exactly one 1 in 0000_0000_00xx incompatible with clkfreq/xinfreq
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rcslow $002
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or
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xinput $004 exactly one 1 in 0000_00xx_xx00 and requires clkfreq/xinfreq
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xtal1 $008 up to one 1 in 0xxx_xx00_0000
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xtal2 $010
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xtal3 $020
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pll1x $040
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pll2x $080
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pll4x $100
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pll8x $200
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pll16x $400
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}
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b1 := -1 ' b1 is the position of the single 1 in mode[5..0].
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repeat i from 0 to 5
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if mode & |< i
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if b1 <> -1
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abort string("invalid _CLKMODE") ' only one 1 allowed
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b1 := i
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m := lookupz( b1: $00, $01, $22, $2a, $32, $3a )
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b2 := -1 ' b2 is the position of single 1 in mode[10..6] (-1 if no 1 bit)
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repeat i from 6 to 10
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if mode & |< i
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if b2 <> -1
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abort string("invalid _CLKMODE (multiple PLL)") ' only one 1 allowed
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b2 := i
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if b1 < 2 ' RCFAST/RCSLOW?
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if b2 <> -1 ' b2 better not be set
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abort string("invalid _CLKMODE (RC+PLL)")
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else ' one of the X-modes
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if b2 <> -1
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m |= $40 ' PLLENA
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m += b2 - 5
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dat
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ptrs word @s0, @s1, @s2, @s3, @s4
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s0 byte "_CLKFREQ", 0
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s1 byte "_XINFREQ", 0
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s2 byte "_CLKMODE", 0
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s3 byte "_FREE", 0
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s4 byte "_STACK", 0
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dat
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long
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header byte 0[16]
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footer byte $ff, $ff, $f9, $ff
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byte $ff, $ff, $f9, $ff
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con
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MAXFILENAMELENGTH = 8 + 1 + 3 ' 8.3
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MAXEXPORTLENGTH = 32
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var
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byte stringBuffer[MAXEXPORTLENGTH+1]
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byte sobName[MAXFILENAMELENGTH+1]
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byte outputName[MAXFILENAMELENGTH+1]
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con
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#0
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_pNext[2]
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_pNextSorted[2]
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_pName[2]
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_nImports[2]
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_pImports[2]
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_pCounts[2]
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_startAddress[2]
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_objBinSize[2]
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_totalVarSize[2]
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_varSize[2]
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_timestamp[4]
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_exportImportSize[2]
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_checksum[1]
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_[1] ' for alignment: _SIZEOFSOBINFO must be a multiple of 4
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_SIZEOFSOBINFO
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SOBFILEFORMATVERSION = "S" + "O" << 8 + "B" << 16 + "1" << 24 ' "SOB1"
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dat
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pSobSpace word 0
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SOBSSIZE word 0
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pDataSpace word 0
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pFirst word 0
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pLast word 0
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pLastSorted word 0
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pri SobInit( p, size )
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pFirst := pSobSpace := p
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SOBSSIZE := size
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pDataSpace := pSobSpace + SOBSSIZE
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pLastSorted := pLast := pFirst
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word[pFirst +_pNext]~
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word[pFirst +_pNextSorted]~
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pri ComputeAddressAndTotalVarSize( p, address ) : totalVarSize | pImports, pCounts, interObjectOffset
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{{
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Go down the priority-sorted list of sobs assigning them hub addresses such that they follow one
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another in memory. On the way back up the list, compute each sob's total VAR size (the sob's
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own VARs plus its imported sobs' VARs.)
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Also updates checksum.
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Return value is the current sob's total VAR size. Only the top object's return value is looked at.
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}}
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ifnot p
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return
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word[p +_startAddress] := address
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address += word[p +_objBinSize]
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objBinEndAddress := address ' end address will point just beyond the last obj in hub memory.
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' Here we're just overwriting as we go and keeping the last one.
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||
|
ComputeAddressAndTotalVarSize( word[p +_pNextSorted], address )
|
||
|
|
||
|
checksum += byte[p +_checksum] ' this is the partial checksum of the obj (doesn't count its sub-object table because
|
||
|
' sub-object links are not known until link time (i.e., now))
|
||
|
totalVarSize := word[p +_varSize]
|
||
|
pImports := word[p +_pImports]
|
||
|
pCounts := word[p +_pCounts]
|
||
|
repeat word[p +_nImports] ' for each import, add the import's VAR size multiplied by its count
|
||
|
interObjectOffset := word[ word[pImports] +_startAddress] - word[p +_startAddress]
|
||
|
repeat word[pCounts]
|
||
|
AddToChecksum( @totalVarSize, 2 ) ' checksum needs to include this half of an object table entry
|
||
|
AddToChecksum( @interObjectOffset, 2 ) ' and this other half of an object table entry
|
||
|
|
||
|
totalVarSize += word[ word[pImports] +_totalVarSize]
|
||
|
|
||
|
pImports += 2
|
||
|
pCounts += 2
|
||
|
|
||
|
word[p +_totalVarSize] := totalVarSize
|
||
|
|
||
|
pri AddToChecksum( p, n )
|
||
|
repeat n
|
||
|
checksum += byte[p++]
|
||
|
|
||
|
pri AddSob( pName ) : p | n
|
||
|
{{
|
||
|
Copies name to data area, appends name to the sobs list, returns pointer to new sob entry.
|
||
|
}}
|
||
|
if verbosity => 2
|
||
|
term.str(string("adding "))
|
||
|
term.str(pName)
|
||
|
term.out(13)
|
||
|
|
||
|
p := pSobSpace
|
||
|
pSobSpace += _SIZEOFSOBINFO
|
||
|
|
||
|
n := strsize(pName) + 1
|
||
|
bytemove( Alloc(n), pName, n )
|
||
|
|
||
|
word[pLast +_pNext] := p
|
||
|
word[pLastSorted +_pNextSorted] := p
|
||
|
word[p +_pName] := pDataSpace
|
||
|
word[p +_pNext]~
|
||
|
word[p +_pNextSorted]~
|
||
|
pLast := p
|
||
|
pLastSorted := p
|
||
|
|
||
|
pri Alloc( n )
|
||
|
pDataSpace := (pDataSpace - n) & $fffffffc ' long-aligned
|
||
|
if pDataSpace < pSobSpace
|
||
|
abort string("Insufficient sob table space")
|
||
|
return pDataSpace
|
||
|
|
||
|
pri FindSob( pName ) : p | pPrev
|
||
|
{{
|
||
|
Search the sob list in priority order. If a sob in the list matches name,
|
||
|
update priority-order links to put the sob at the end and return a pointer to it.
|
||
|
Otherwise, return 0.
|
||
|
}}
|
||
|
p := pPrev := pFirst
|
||
|
repeat while p
|
||
|
if strcomp( word[p +_pName], pName )
|
||
|
if p <> pLastSorted
|
||
|
word[pPrev +_pNextSorted] := word[p +_pNextSorted]
|
||
|
word[pLastSorted +_pNextSorted] := p
|
||
|
word[p +_pNextSorted]~
|
||
|
pLastSorted := p
|
||
|
return
|
||
|
pPrev := p
|
||
|
p := word[p +_pNextSorted]
|
||
|
return 0
|
||
|
|
||
|
pri ProcessSob( p, top ) | len, numExports, exportSize, numImports, importSize, objBinSize, hash, pStart, temp, pImports, pCounts, ts0, ts1
|
||
|
{{
|
||
|
Reads the sob file identified by p, appends the sob's imports to the sob list,
|
||
|
then recursively processes the imported sobs.
|
||
|
top is true for the top sob, false for all other sobs.
|
||
|
}}
|
||
|
Str.Copy( @stringBuffer, word[p +_pName] )
|
||
|
Str.Append( @stringBuffer, string(".SOB") )
|
||
|
|
||
|
if verbosity => 2
|
||
|
term.str( string("Reading [") )
|
||
|
term.str( @stringBuffer )
|
||
|
term.out( "]" )
|
||
|
term.out( 13 )
|
||
|
|
||
|
fs.Open( @stringBuffer, "R" )
|
||
|
|
||
|
if fs.Readlong <> SOBFILEFORMATVERSION ' SOB file format version
|
||
|
abort string("Unrecognized SOB file format")
|
||
|
long[p +_timestamp] := fs.Readlong ' timestamp
|
||
|
hash := fs.ReadLong ' hash
|
||
|
numExports := fs.ReadWord ' number of exports
|
||
|
exportSize := fs.ReadWord ' size of exports segment
|
||
|
numImports := fs.ReadWord ' number of imports
|
||
|
importSize := fs.ReadWord ' size of imports segment
|
||
|
word[p +_objBinSize] := fs.ReadWord ' size of bytecode segment
|
||
|
byte[p +_checksum] := fs.ReadByte ' checksum
|
||
|
fs.ReadByte ' padding
|
||
|
word[p +_varSize] := fs.ReadWord ' size of sob's VAR space
|
||
|
|
||
|
ts0 := long[p +_timestamp]
|
||
|
|
||
|
if top
|
||
|
ReadExports( numExports )
|
||
|
else
|
||
|
fs.SkipBytes( exportSize )
|
||
|
|
||
|
word[p +_exportImportSize] := exportSize + importSize
|
||
|
|
||
|
word[p +_nImports] := numImports
|
||
|
word[p +_pImports] := pImports := Alloc( numImports << 1 ) ' points to an array of sob pointers
|
||
|
word[p +_pCounts] := pCounts := Alloc( numImports << 1 ) ' points to an array of sob counts
|
||
|
|
||
|
pStart := pLast
|
||
|
repeat numImports
|
||
|
fs.ReadStringUpperCase( @stringBuffer, 8 )
|
||
|
ts1 := GetTimestamp( @stringBuffer )
|
||
|
if ts0 and ts1 ' Only compare non-zero timestamps
|
||
|
if ts0 =< ts1
|
||
|
term.str( word[p+_pName] )
|
||
|
term.str( string(".SOB is older than ") )
|
||
|
term.str( @stringBuffer )
|
||
|
term.str( string(".SOB", 13) )
|
||
|
outOfDate~~
|
||
|
ifnot temp := FindSob( @stringBuffer )
|
||
|
temp := AddSob( @stringBuffer )
|
||
|
word[pImports] := temp
|
||
|
word[pCounts] := fs.ReadWord
|
||
|
fs.ReadByte ' reserved byte
|
||
|
if verbosity => 3
|
||
|
term.str( word[ word[pImports] +_pName] )
|
||
|
term.out( "*" )
|
||
|
term.dec( word[pCounts] )
|
||
|
term.out( 13 )
|
||
|
pImports += 2
|
||
|
pCounts += 2
|
||
|
|
||
|
if top
|
||
|
fs.SkipBytes( $4 ) ' look into the top sob's object header
|
||
|
firstPubOffset := fs.ReadWord ' and get offset to first pub
|
||
|
firstPubLocalsSize := fs.ReadWord ' and size of first pub's locals
|
||
|
|
||
|
fs.Close
|
||
|
|
||
|
' Process the imported sobs
|
||
|
|
||
|
pStart := word[pStart +_pNext]
|
||
|
repeat while pStart
|
||
|
ProcessSob( pStart, false )
|
||
|
pStart := word[pStart +_pNext]
|
||
|
|
||
|
if verbosity => 2
|
||
|
term.str( string("done with ") )
|
||
|
term.str( word[p +_pName] )
|
||
|
term.out( 13 )
|
||
|
|
||
|
pri GetTimestamp( pFilename )
|
||
|
str.Append( pFilename, string(".SOB") )
|
||
|
fs[1].Open( pFilename, "R" )
|
||
|
fs[1].ReadLong
|
||
|
result := fs[1].ReadLong
|
||
|
fs[1].Close
|
||
|
byte[pFilename][ strsize(pFilename) - 4 ]~ ' remove .SOB tail
|
||
|
|
||
|
{{
|
||
|
Copyright (c) 2009 Michael Park
|
||
|
+------------------------------------------------------------------------------------------------------------------------------+
|
||
|
| TERMS OF USE: MIT License |
|
||
|
+------------------------------------------------------------------------------------------------------------------------------+
|
||
|
|Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation |
|
||
|
|files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, |
|
||
|
|modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software|
|
||
|
|is furnished to do so, subject to the following conditions: |
|
||
|
| |
|
||
|
|The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.|
|
||
|
| |
|
||
|
|THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE |
|
||
|
|WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR |
|
||
|
|COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
|
||
|
|ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
|
||
|
+------------------------------------------------------------------------------------------------------------------------------+
|
||
|
}}
|
||
|
|