mirror of
https://github.com/elliotnunn/powermac-rom.git
synced 2025-08-05 04:25:34 +00:00
Simplify linker script
Previously the MPW linker script would generate a secondary script to be executed. This was unnecessarily complicated, and it left some junk in the build tree.
This commit is contained in:
Elliot Nunn
@@ -1,151 +1,97 @@
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Set Streamer " | StreamEdit -d -e '/?<3F>/ Pr <20><><EFBFBD>"1<><31><EFBFBD>"'"
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Set DEST "{1}"
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Set DEST_X "{TempFolder}LinkedPowerROM.x"
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If {#} <20>< 2
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Echo "USAGE: {0} DEST SRC ... > ShellScript"
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Exit 1
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End
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Set DestFile "{1}"
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Shift
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Shift
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Echo "Hello from LinkPowerROM, the 21st-century PowerMac ROM linker"
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Echo "DEST = {DEST}"
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Set CTOOL "{0}".tool
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Echo "Assuming that {CTOOL} is compiled"
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Set TempPrepFile "{TempFolder}PPCROMLinkPrepCmds"
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Set CurOffset 0 # contains a decimal number throughout
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Set TempCmdFile "{TempFolder}PPCROMLinkCmds"
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Set LinkList "" # contains space-separated quoted xcoff filenames
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Echo -n "" > "{TempPrepFile}"
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Set CksumOffset 0x30d000 # a good default
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Echo -n "PPCLink -xm library -codestart 0 -warn -o " > "{TempCmdFile}"
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Echo "{#} arguments..."
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Quote -n "{DestFile}.x" >> "{TempCmdFile}"
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Loop
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Set OffsetSoFar 0
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Set NeedTool 1 # Always extract binary, so always need tool
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Loop # over arguments
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If !{#}
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If !{#}
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Break
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Break
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End
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End
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Echo ------------------------------
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Echo "ARG '{1}'"
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If "{1}" =~ /[0-9]+/ || "{1}" =~ /0x[0-9a-f]+/
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If "{1}" =~ /[0-9]+/ || "{1}" =~ /0x[0-9a-f]+/
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# Move-to-offset argument (hex or decimal literal)
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Echo "Move to offset."
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Set NewOffset `Evaluate "{1}"`
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If `Evaluate {1} <20>< {OffsetSoFar}`
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If {NewOffset} <20>< {CurOffset}
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Echo "{0} failed: cannot pad to offset {1} because we are already past it!"
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Echo "{0} failed: cannot pad to offset {NewOffset} because we are already past it!" >> Dev:Stderr
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Exit 1
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Exit 1
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Else If {NewOffset} <20>> {CurOffset}
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Set Delta `Evaluate {NewOffset} - {CurOffset}`
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Set F "Zeros_{Delta}.s"
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Echo "Create {F}"
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Set F "{TempFolder}{F}"
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Echo " DCB.B {Delta}, 0" > "{F}"
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PPCAsm "{F}"
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Set LinkList "{LinkList} '{F}.o'"
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Set CurOffset {NewOffset}
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End
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End
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Set Delta `Evaluate -h {1} - {OffsetSoFar}`
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If {Delta}
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Echo -n "Set F <20>"<22>{TempFolder<65>}Zeros_{Delta}.s<>";<3B>t" >> "{TempPrepFile}"
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Echo -n 'If !`Exists "{F}"' >> "{TempPrepFile}"
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Echo -n "{Streamer}" >> "{TempPrepFile}"
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Echo -n '`; ' >> "{TempPrepFile}"
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Echo -n "Echo <20><>tDCB.B {Delta}, 0" '> "{F}"; ' >> "{TempPrepFile}"
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Echo -n 'PPCAsm "{F}"; ' >> "{TempPrepFile}"
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Echo "End" >> "{TempPrepFile}"
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Echo -n "<22>t<EFBFBD><74><EFBFBD>n<EFBFBD>t" >> "{TempCmdFile}"
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Echo -n "<22>"<22>{TempFolder<65>}Zeros_{Delta}.s.o<>"" >> "{TempCmdFile}"
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Set OffsetSoFar {1}
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End
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Else If "{1}" =~ /([A-Za-z0-9]+)<29>1:/
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Else If "{1}" =~ /([A-Za-z0-9]+)<29>1:/
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# Label argument
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Echo "Insert label for linker."
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Set Label {<7B>1}
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Echo -n "Set F <EFBFBD>"<22>{TempFolder<EFBFBD>}{<7B>1}.s<>";<3B>t" >> "{TempPrepFile}"
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Set F "{TempFolder}Label_{Label}.s"
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Echo -n 'If !`Exists "{F}"' >> "{TempPrepFile}"
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Echo " EXPORT {Label}" > "{F}"
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Echo -n "{Streamer}" >> "{TempPrepFile}"
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Echo "{Label}:" >> "{F}"
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Echo -n '`; ' >> "{TempPrepFile}"
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PPCAsm "{F}"
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Echo -n "Echo <20><>tEXPORT {<7B>1}<7D><>n{<7B>1}" '> "{F}"; ' >> "{TempPrepFile}"
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Set LinkList "{LinkList} '{F}.o'"
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Echo -n 'PPCAsm "{F}"; ' >> "{TempPrepFile}"
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Echo "End" >> "{TempPrepFile}"
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Else If "{1}" == CHECKSUM
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Echo "Put the ConfigInfo checksum here."
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Set CksumOffset {CurOffset}
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Echo -n "<22>t<EFBFBD><74><EFBFBD>n<EFBFBD>t" >> "{TempCmdFile}"
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Echo -n "<22>"<22>{TempFolder<65>}{<7B>1}.s.o<>"" >> "{TempCmdFile}"
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Else
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Else
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# Filename argument
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Echo "Link this file."
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Set F "{1}"
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If "{1}" !~ /<2F>.x/
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# Convert to an xcoff if necessary
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Echo -n "Set F " >> "{TempPrepFile}"
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If "{F}" !~ /<2F>.x/
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Quote -n "{1}" >> "{TempPrepFile}"
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Echo "Converting to xcoff first."
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Echo -n "; " >> "{TempPrepFile}"
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Set NewPath "`Echo {F} | StreamEdit -d -e '/(<28>:)*([<5B>:]*)<29>1/ print <20>1'`.x"
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Echo -n 'If !`Exists "{F}.x"' >> "{TempPrepFile}"
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Echo "Temporary file {NewPath}"
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Echo -n "{Streamer}" >> "{TempPrepFile}"
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Set NewPath "{TempFolder}{NewPath}"
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Echo -n '` || `Newer "{F}" "{F}.x"' >> "{TempPrepFile}"
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"{CTOOL}" tox "{F}" "{NewPath}"
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Echo -n "{Streamer}" >> "{TempPrepFile}"
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Set F "{NewPath}"
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Echo -n '`; ' >> "{TempPrepFile}"
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Quote -n "{0}.tool" >> "{TempPrepFile}"
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Echo -n ' tox "{F}" "{F}.x"; ' >> "{TempPrepFile}"
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Echo "End" >> "{TempPrepFile}"
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Set NeedTool 1
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Set TheXCOFF "{1}.x"
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Set TextLen `Files -x b -n "{1}" | StreamEdit -d -e '/([0-9]+)<29>1b<31>/ Print <20>1'`
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Else
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Set TheXCOFF "{1}"
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Set TextLen `DumpXCOFF -do h "{TheXCOFF}" | StreamEdit -d -e '/s_nameŶ".(<28>)<29>1<EFBFBD>"/ Set CurSec <20>1' -e '/s_sizeŶ((<28>)<29>1<EFBFBD>)/ Print CurSec " " <20>1' | StreamEdit -d -e '/text (<28>)<29>1/ Print <20>1'`
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End
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End
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Echo -n "<22>t<EFBFBD><74><EFBFBD>n<EFBFBD>t" >> "{TempCmdFile}"
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Quote -n "{TheXCOFF}" >> "{TempCmdFile}"
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Set OffsetSoFar `Evaluate {OffsetSoFar} + {TextLen}`
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Set LinkList "{LinkList} '{F}'"
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Set TextLen `DumpXCOFF -do h "{F}" | StreamEdit -d -e '/s_nameŶ".(<28>)<29>1<EFBFBD>"/ Set CurSec <20>1' -e '/s_sizeŶ((<28>)<29>1<EFBFBD>)/ Print CurSec " " <20>1' | StreamEdit -d -e '/text (<28>)<29>1/ Print <20>1'`
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Echo -n "File size = "; Evaluate -h {TextLen}
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Set CurOffset `Evaluate {CurOffset} + {TextLen}`
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End
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End
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Echo -n "CurOffset = "; Evaluate -h {CurOffset}
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Shift
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Shift
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End
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End
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If {NeedTool}
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Echo ------------------------------
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Echo "# Compile a C program to create/extract basic XCOFFs"
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Echo -n 'If !`Exists '
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Quote -n "{0}.tool"
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Echo -n "{Streamer}"
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Echo '`'
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Echo -n "<22>tSC "
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Echo "Running PPCLink..."
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Echo -n '-o "{TempFolder}LinkPowerROM.o" '
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PPCLink -xm library -codestart 0 -warn -o "{DEST_X}" {LinkList}
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Quote "{0}.c"
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Echo -n "<22>tILink -d -t MPST -c 'MPS ' -o "
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Echo "Dumping temp xcoff to DEST..."
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Quote -n "{0}.tool"
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"{CTOOL}" fromx "{DEST_X}" "{DEST}"
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Echo ' "{Libraries}Stubs.o" "{CLibraries}StdCLib.o" "{Libraries}MacRuntime.o" "{Libraries}IntEnv.o" "{Libraries}Interface.o" "{TempFolder}LinkPowerROM.o"'
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Echo "End"
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Echo "Checksumming DEST..."
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Echo
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"{CTOOL}" cksum "{DEST}" {CksumOffset}
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End
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Echo "# Auto-generate some XCOFFs (padding and labels)"
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Echo "All done."
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Catenate "{TempPrepFile}"
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Echo
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Echo "# Link whole-ROM XCOFF"
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Catenate "{TempCmdFile}"
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Echo
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Echo
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Echo "# Extract raw ROM binary"
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Quote -n "{0}.tool"
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Echo -n " fromx "
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Quote -n "{DestFile}.x"
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Echo -n " "
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Quote "{DestFile}"
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Echo
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Echo "# Checksum the ConfigInfo structure(s)"
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Echo -n 'Set CksumOffsets "`DumpXCOFF -do s '
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Quote -n "{DestFile}.x"
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Echo ' | StreamEdit -d -e "/C_EXT<58>Addr<64>(0x[A-Fa-f0-9]+)<29>1<EFBFBD>ConfigInfoChecksum/ Print <20>1"`"'
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Quote -n "{0}.tool"
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Echo -n " cksum "
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Quote -n "{DestFile}"
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Echo ' {CksumOffsets}'
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12
MakeFile
12
MakeFile
@@ -7,6 +7,12 @@ MainTarget
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{LinkerDir}LinkPowerROM.tool <09> {LinkerDir}LinkPowerROM.c
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SC -o "{TempFolder}LinkPowerROM.o" {Deps}
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ILink -d -t MPST -c 'MPS ' -o {Targ} "{Libraries}Stubs.o" "{CLibraries}StdCLib.o" "{Libraries}MacRuntime.o" "{Libraries}IntEnv.o" "{Libraries}Interface.o" "{TempFolder}LinkPowerROM.o"
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RomBin = :RomMondo.bin
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RomBin = :RomMondo.bin
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@@ -38,7 +44,7 @@ EmulatorBin = Emulator.x
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{ResultDir}PowerROM <09> {RomBin} {ExceptionTableBin} {ConfigInfoBin} {NKBin} {EmulatorBin}
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{ResultDir}PowerROM <09> {LinkerDir}LinkPowerROM.tool {RomBin} {ExceptionTableBin} {ConfigInfoBin} {NKBin} {EmulatorBin}
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{LinkerDir}LinkPowerROM {Targ} <09>
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{LinkerDir}LinkPowerROM {Targ} <09>
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RomTop: <09>
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RomTop: <09>
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0x000000 Mac68kRomTop: <09>
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0x000000 Mac68kRomTop: <09>
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@@ -48,7 +54,7 @@ EmulatorBin = Emulator.x
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0x300000 ExTblTop: <09>
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0x300000 ExTblTop: <09>
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{ExceptionTableBin} <09>
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{ExceptionTableBin} <09>
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<09>
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<09>
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0x30d000 ConfigInfoChecksum: <09>
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0x30d000 CHECKSUM <09>
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{ConfigInfoBin} <09>
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{ConfigInfoBin} <09>
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<09>
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<09>
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0x310000 NKTop: <09>
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0x310000 NKTop: <09>
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@@ -57,4 +63,4 @@ EmulatorBin = Emulator.x
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0x360000 <09>
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0x360000 <09>
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{EmulatorBin} <09>
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{EmulatorBin} <09>
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0x400000 RomBtm: <09>
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0x400000 RomBtm: <09>
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> {ResultDir}LinkerScript ; {ResultDir}LinkerScript
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> Dev:Null # unless you want debug output
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