2019-01-07 00:40:02 +00:00
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#Region Variables
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2019-01-08 03:38:52 +00:00
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$input_rom_file = "bin/m12fresh.gba"
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$output_rom_file = "bin/m12.gba"
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$eb_rom_file = "bin/eb.smc"
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$working_dir = "working"
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$src_dir = "src"
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$compiled_asm_file = "src/m2-compiled.asm"
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$includes_asm_file = "m12-includes.asm" # implicitly rooted in working_dir
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$hack_asm_file = "m2-hack.asm" # implicitly rooted in src_dir
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2019-01-07 00:40:02 +00:00
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$input_c_files =
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"src/c/ext.c",
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2019-01-07 00:42:55 +00:00
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"src/c/vwf.c",
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"src/c/locs.c",
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"src/c/goods.c"
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2019-01-07 00:40:02 +00:00
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2019-01-08 03:38:52 +00:00
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$base_c_address = 0x8100000;
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$scripttool_cmd = "bin/ScriptTool/ScriptTool.dll"
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$symbuilder_cmd = "bin/SymbolTableBuilder/SymbolTableBuilder.dll"
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$gcc_cmd = "arm-none-eabi-gcc"
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$ld_cmd = "arm-none-eabi-ld"
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$objdump_cmd = "arm-none-eabi-objdump"
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$readelf_cmd = "arm-none-eabi-readelf"
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$combined_obj_file = "src/c/combined.o"
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$linked_obj_file = "src/c/linked.o"
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$combine_script = "src/c/combine.ld"
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$link_script = "src/c/link.ld"
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$undefine_obj_file = "src/c/ext.o"
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If ($IsWindows) { $asm_cmd = "bin/armips.exe" }
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ElseIf ($IsLinux) { $asm_cmd = "bin/armips" }
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Else {
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Write-Host "TODO: what's the Mac version of armips?"
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Exit -1
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}
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2019-01-07 00:40:02 +00:00
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2019-01-08 03:38:52 +00:00
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$includes_sym_file = [IO.Path]::ChangeExtension($includes_asm_file, "sym")
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2019-01-07 00:40:02 +00:00
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$output_rom_sym_file = [IO.Path]::ChangeExtension($output_rom_file, "sym")
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2019-01-08 03:38:52 +00:00
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$hack_sym_file = [IO.Path]::ChangeExtension($hack_asm_file, "sym")
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2019-01-07 00:40:02 +00:00
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$scripttool_args =
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"-compile",
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"-main",
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"-misc",
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$working_dir,
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$eb_rom_file,
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$input_rom_file
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$gcc_args =
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"-c",
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"-O3",
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"-fno-ipa-cp",
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"-fno-inline",
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"-march=armv4t",
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"-mtune=arm7tdmi",
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"-mthumb",
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"-ffixed-r12",
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"-mno-long-calls"
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$combine_script_contents =
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"SECTIONS { .text 0x$($base_c_address.ToString('X')) : { *(.text .rodata) } }"
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$link_script_contents =
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"SECTIONS { .text 0x$($base_c_address.ToString('X')) : { *(.text .data .rodata) } }"
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#EndRegion Variables
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#Region Functions
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class Symbol
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{
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[string]$Name
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[int]$Value
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[int]$Size
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[bool]$IsLocal
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[bool]$IsGlobal
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[bool]$IsWeak
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[bool]$IsConstructor
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[bool]$IsWarning
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[bool]$IsIndirect
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[bool]$IsDebugging
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[bool]$IsDynamic
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[bool]$IsFunction
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[bool]$IsFile
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[bool]$IsObject
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[string]$Section
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[bool]$IsAbsolute
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[bool]$IsUndefined
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}
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class SectionInfo
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{
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[string]$Name
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[int]$Address
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[int]$Offset
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[int]$Size
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}
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Function Get-Symbols ([string]$obj_file)
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{
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return & $objdump_cmd -t $obj_file | ForEach-Object { New-Symbol $_ } | Where-Object { $_ -ne $null }
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}
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# Converts a symbol from objdump's string representation to a rich object representation
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$symbol_regex = "(?'value'[0-9a-fA-F]{8})\s(?'flags'.{7})\s(?'section'\S+)\s+(?'size'[0-9a-fA-F]{8})\s(?'name'\S+)"
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Function New-Symbol([string]$symbol_string)
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{
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if ($symbol_string -match $symbol_regex)
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{
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$symbol = [Symbol]::new()
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$symbol.Name = $Matches.name
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$symbol.Value = [int]::Parse($Matches.value, [System.Globalization.NumberStyles]::HexNumber)
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$symbol.Size = [int]::Parse($Matches.size, [System.Globalization.NumberStyles]::HexNumber)
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$symbol.Section = $Matches.section
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$symbol.IsAbsolute = $symbol.Section -eq "*ABS*"
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$symbol.IsUndefined = $symbol.Section -eq "*UND*"
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$flags = $Matches.flags
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$symbol.IsLocal = $flags.Contains("l") -or $flags.Contains("!")
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$symbol.IsGlobal = $flags.Contains("g") -or $flags.Contains("!")
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$symbol.IsWeak = $flags.Contains("w")
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$symbol.IsConstructor = $flags.Contains("C")
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$symbol.IsWarning = $flags.Contains("W")
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$symbol.IsIndirect = $flags.Contains("I")
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$symbol.IsDebugging = $flags.Contains("d")
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$symbol.IsDynamic = $flags.Contains("D")
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$symbol.IsFunction = $flags.Contains("F")
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$symbol.IsFile = $flags.Contains("f")
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$symbol.IsObject = $flags.Contains("O")
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return $symbol
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}
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else
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{
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return $null
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}
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}
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Function Get-SymfileSymbols([string]$symbol_file)
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{
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return Get-Content $symbol_file | ForEach-Object { New-SymfileSymbol $_ } | Where-Object { $_ -ne $null }
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}
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$symfile_symbol_regex = "(?'value'[0-9a-fA-F]{8})\s+(?'name'(?>\.|@@|[a-zA-Z0-9_])[a-zA-Z0-9_]+):{0,1}(?'size'[0-9a-fA-F]+){0,1}"
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Function New-SymfileSymbol([string]$symbol_string)
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{
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if ($symbol_string -match $symfile_symbol_regex)
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{
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$symbol = [Symbol]::new()
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$symbol.Name = $Matches.name
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$symbol.Value = [int]::Parse($Matches.value, [System.Globalization.NumberStyles]::HexNumber)
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if ($null -ne $Matches.size)
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{
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$symbol.Size = [int]::Parse($Matches.size, [System.Globalization.NumberStyles]::HexNumber)
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}
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else
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{
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$symbol.Size = 0
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}
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$symbol.IsLocal = $symbol.Name.StartsWith("@@")
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$symbol.IsGlobal = -not $symbol.Name.StartsWith(".") -and -not $symbol.IsLocal
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return $symbol
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}
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else
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{
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return $null
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}
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}
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function Get-SectionInfo([string]$object_file)
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{
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$hash = @{}
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& $readelf_cmd -S $object_file | ForEach-Object {
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$section = New-Section $_
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if ($null -ne $section)
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{
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$hash[$section.Name] = $section
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}
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}
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return $hash
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}
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$section_regex = "\s?\[\s?\d+]\s(?'name'\S+)\s+\S+\s+(?'address'[0-9a-fA-F]+)\s(?'offset'[0-9a-fA-F]+)\s(?'size'[0-9a-fA-F]+)"
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function New-Section([string]$section_string)
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{
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if ($section_string -match $section_regex)
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{
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$section = [SectionInfo]::new()
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$section.Name = $Matches.name
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$section.Address = [int]::Parse($Matches.address, [System.Globalization.NumberStyles]::HexNumber)
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$section.Offset = [int]::Parse($Matches.offset, [System.Globalization.NumberStyles]::HexNumber)
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$section.Size = [int]::Parse($Matches.size, [System.Globalization.NumberStyles]::HexNumber)
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return $section
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}
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else
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{
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return $null
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}
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}
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#EndRegion Functions
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<#
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This is a complicated build script that does complicated things, but it's
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that way for a reason.
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- We want to use ASM and C code files simultaneously
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- The ASM code defines symbols that we want to reference from C
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- The C code defines symbols that we want to reference from ASM
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- The game text defines symbols that we want to reference from C
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The ASM and C code therefore depend on each other. The way around this catch-22
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is to separate the compiling and linking stages of the C code.
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1) Compile the game text
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Inputs:
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- Text/script files
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Outputs:
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- BIN files containing compiled text data
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- ASM files that relocate text pointers (m12-includes.asm)
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2) Assemble output from step 1
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Inputs:
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- Output from step 1
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- Fresh M12 ROM file
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Outputs:
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- ROM file with text inserted and repointed
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- m12-includes.sym file containing generated symbols (e.g. individual strings from m12-other.json)
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3) Compile C code
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Inputs:
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- C files
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Outputs:
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- O files (one for each C file)
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Remarks:
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- All symbols not defined in the C code itself must be marked extern. We will link it
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in a later step. This includes the string symbols from step 2.
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- Due to an assembler limitation, extern symbols cannot contain capital letters.
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- There's a weird quirk with the linker that requires extra care when using external
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functions. You need to declare them as extern AND implement them using the ((naked))
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attribute, e.g.
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(in a header file) extern int m2_drawwindow(WINDOW* window);
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(in a code file) int __attribute__((naked)) m2_drawwindow(WINDOW* window) {}
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See: http://stackoverflow.com/a/43283331/1188632
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This will cause a duplicate definition of the function symbol, since it's *really*
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defined in the ASM files somewhere, but we're redefining it again in C. So we also need
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to "undefine" these symbols later on when linking.
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To make it a bit easier to do all that, place all such implementations in ext.c.
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4) First link stage
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Inputs:
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- O files from step 3
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- Base address
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Outputs:
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- Single O file positioned to the base address
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- m2-compiled.asm, containing C symbol definitions
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Remarks:
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- This is an incremental link; there will still be undefined symbols.
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- However, with this combined O file, the code layout will not change and we can now
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define symbols from the C code to be used in the ASM code.
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- The symbols will be passed to the assembler next, so export them as an ASM file
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with one ".definelabel" entry for each defined symbol. They need to be halfword-aligned.
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This file is called "m2-compiled.asm" by default and is referenced by m2-hack.asm.
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- Exclude the symbols defined in ext.c from m2-compiled.asm.
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5) Assemble ASM code
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Inputs:
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- m2-hack.asm
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- m2-compiled.asm
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- All other ASM and data files from src/ (but not the generated ones from working/)
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- M12 ROM file from step 2
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Outputs:
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- M12 ROM file with all ASM code and data included
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- m2-hack.sym with all symbols defined thusfar
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6) Generate final linker script
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Inputs:
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- Base address (same as step 4)
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- m2-hack.sym (from step 5)
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- m12-includes.sym (from step 2)
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Outputs:
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- Linker script file
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Remarks:
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- The linker script must define each symbol that's still undefined; if everything is
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happy at this point, then they should all be contained within the two input SYM files.
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7) Final link stage
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Inputs:
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- O file from step 4
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- Linker script from step 6
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Outputs:
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- Single O file with all symbols defined
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8) Copy code to ROM
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Inputs:
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- O file from step 7
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- M12 ROM file from step 5
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Outputs:
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- M12 ROM file with all code and data included
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9) Build final symbol file
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Inputs:
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- m2-hack.sym
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- m12-includes.sym
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Outputs:
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- m12.sym
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Remarks:
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- This is a merged symbol file for debugging convenience.
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- The assembler generates a dummy .byt symbol at the base address; remove it.
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- Use SymbolTableBuilder to do the merge, plus remove the undesirable namespaces that
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the assembler inserts.
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#>
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2019-01-08 03:38:52 +00:00
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$timer = [System.Diagnostics.StopWatch]::StartNew()
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2019-01-07 00:40:02 +00:00
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2019-01-08 03:38:52 +00:00
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# ------------------------- COMPILE GAME TEXT -----------------------
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2019-01-07 00:40:02 +00:00
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"Copying $input_rom_file to $output_rom_file..."
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Copy-Item -Path $input_rom_file -Destination $output_rom_file
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"Compiling game text..."
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& dotnet $scripttool_cmd $scripttool_args
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if ($LASTEXITCODE -ne 0) { exit -1 }
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# ------------------------ ASSEMBLE GAME TEXT -----------------------
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"Assembling game text..."
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& $asm_cmd -root $working_dir -sym $includes_sym_file $includes_asm_file
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if ($LASTEXITCODE -ne 0) { exit -1 }
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# ----------------------------- COMPILE C ---------------------------
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$obj_files = @()
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# Invoke gcc on each file individually so that we can specify the output file
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foreach ($input_c_file in $input_c_files)
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{
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$obj_file = [IO.Path]::ChangeExtension($input_c_file, "o")
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$obj_files += $obj_file
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"Compiling $input_c_file..."
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& $gcc_cmd $gcc_args -o $obj_file $input_c_file
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if ($LASTEXITCODE -ne 0) { exit -1 }
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}
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# ----------------------------- 1ST LINK ----------------------------
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"Writing $combine_script..."
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$combine_script_contents | Out-File -FilePath $combine_script
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"Linking $obj_files..."
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& $ld_cmd -i -T $combine_script -o $combined_obj_file $obj_files
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if ($LASTEXITCODE -ne 0) { exit -1 }
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"Reading symbols from $combined_obj_file..."
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|
|
|
$combined_symbols = Get-Symbols $combined_obj_file
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|
|
if ($LASTEXITCODE -ne 0) { exit -1 }
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|
|
"Reading symbols from $undefine_obj_file..."
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|
|
$ext_symbols = Get-Symbols $undefine_obj_file
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|
|
if ($LASTEXITCODE -ne 0) { exit -1 }
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|
|
"Exporting C symbols to $compiled_asm_file..."
|
|
|
|
$ext_symbols_names = $ext_symbols | Where-Object { $_.IsFunction -and $_.IsGlobal -and (-not $_.IsUndefined) } | ForEach-Object { $_.Name }
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|
|
$exported_symbols = $combined_symbols | Where-Object { $_.IsFunction -and $_.IsGlobal -and (-not $_.IsUndefined) -and ($ext_symbols_names -notcontains $_.Name) }
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|
|
$exported_symbols | Sort-Object -Property Name | ForEach-Object { ".definelabel $($_.Name),0x$($_.Value.ToString("X"))" } | Set-Content -Path $compiled_asm_file
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|
|
# ------------------------ ASSEMBLE HACK CODE -----------------------
|
|
|
|
"Assembling $hack_asm_file..."
|
|
|
|
& $asm_cmd -root $src_dir -sym $hack_sym_file $hack_asm_file
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|
|
if ($LASTEXITCODE -ne 0) { exit -1 }
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|
|
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|
|
|
# ------------------- GENERATE FINAL LINKER SCRIPT ------------------
|
|
|
|
"Writing $link_script..."
|
|
|
|
$hack_symbols = Get-SymfileSymbols "$([IO.Path]::Combine($src_dir, $hack_sym_file))"
|
|
|
|
$includes_symbols = Get-SymfileSymbols "$([IO.Path]::Combine($working_dir, $includes_sym_file))"
|
|
|
|
$asm_symbols = ($hack_symbols + $includes_symbols) | Where-Object { $_.IsGlobal }
|
|
|
|
Set-Content -Path $link_script -Value $link_script_contents
|
|
|
|
$asm_symbols | ForEach-Object { Add-Content -Path $link_script -Value "$($_.Name) = 0x$($_.Value.ToString("X"));" }
|
|
|
|
|
|
|
|
# ---------------------------- FINAL LINK ---------------------------
|
|
|
|
"Linking to $linked_obj_file..."
|
|
|
|
& $ld_cmd -T $link_script -o $linked_obj_file $combined_obj_file
|
|
|
|
if ($LASTEXITCODE -ne 0) { exit -1 }
|
|
|
|
|
|
|
|
# -------------------- COPY COMPILED C CODE TO ROM ------------------
|
|
|
|
"Copying compiled code to $output_rom_file..."
|
|
|
|
$sections = Get-SectionInfo $linked_obj_file
|
|
|
|
if ($LASTEXITCODE -ne 0) { exit -1 }
|
|
|
|
$text_section = $sections[".text"]
|
|
|
|
$linked_bytes = [IO.File]::ReadAllBytes($linked_obj_file)
|
|
|
|
$rom_bytes = [IO.File]::ReadAllBytes($output_rom_file)
|
|
|
|
[System.Array]::Copy($linked_bytes, $text_section.Offset, $rom_bytes, $text_section.Address - 0x8000000, $text_section.Size)
|
|
|
|
[IO.File]::WriteAllBytes($output_rom_file, $rom_bytes)
|
|
|
|
|
|
|
|
# -------------------------- GENERATE SYMBOLS -----------------------
|
|
|
|
"Generating $output_rom_sym_file..."
|
|
|
|
& dotnet $symbuilder_cmd $output_rom_sym_file "$([IO.Path]::Combine($src_dir, $hack_sym_file))" "$([IO.Path]::Combine($working_dir, $includes_sym_file))"
|
|
|
|
if ($LASTEXITCODE -ne 0) { exit -1 }
|
|
|
|
|
2019-01-08 03:38:52 +00:00
|
|
|
"Finished compiling $output_rom_file in $($timer.Elapsed.TotalSeconds.ToString("F3")) s"
|
|
|
|
|
2019-01-07 00:40:02 +00:00
|
|
|
exit 0
|