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doing dwarf injectiion/mods for the tape atoms. syncs with vscode cursor.

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ed
2026-07-12 12:51:41 -04:00
parent aca6e30e20
commit f7aa7b75e7
5 changed files with 896 additions and 24 deletions
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scripts/build_psyq.ps1
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@@ -394,6 +394,55 @@ function build-gte_hello {
-out_root (join-path $path_build 'gen') `
-passes @('--gdb-runtime') `
-extra_args @('--elf', $elf)
ps1-meta -sources $atom_sources -metadata $path_atom_metadata `
-out_root (join-path $path_build 'gen') `
-passes @('--dwarf-injection') `
-extra_args @('--elf', $elf)
# F' track: post-link DWARF injection. The new Lua pass writes
# build/gen/<basename>.dwarf_*.bin blobs; we splice them into a COPY
# of the ELF via objcopy --update-section (works fine from PowerShell).
# The un-injected $elf + $exe are unchanged (shipping binary).
$dwarfLineBin = Join-Path (Join-Path $path_build 'gen') 'hello_gte.dwarf_line.bin'
$dwarfArangesBin = Join-Path (Join-Path $path_build 'gen') 'hello_gte.dwarf_aranges.bin'
$dwarfRnglistsBin = Join-Path (Join-Path $path_build 'gen') 'hello_gte.dwarf_rnglists.bin'
$injectElf = Join-Path $path_build 'hello_gte.dwarf-injected.elf'
if ((Test-Path $dwarfLineBin) -and (Test-Path $dwarfArangesBin) -and (Test-Path $dwarfRnglistsBin)) {
Write-Host "[build] DWARF-injecting $elf -> $injectElf"
Copy-Item -LiteralPath $elf -Destination $injectElf
& $Objcopy --update-section ".debug_line=$dwarfLineBin" $injectElf
if ($LASTEXITCODE -ne 0) {
Write-Warning "[build] objcopy .debug_line update failed (exit $LASTEXITCODE); removing $injectElf"
Remove-Item -LiteralPath $injectElf -ErrorAction SilentlyContinue
} else {
& $Objcopy --update-section ".debug_aranges=$dwarfArangesBin" $injectElf
if ($LASTEXITCODE -ne 0) {
Write-Warning "[build] objcopy .debug_aranges update failed (exit $LASTEXITCODE); removing $injectElf"
Remove-Item -LiteralPath $injectElf -ErrorAction SilentlyContinue
} else {
& $Objcopy --update-section ".debug_rnglists=$dwarfRnglistsBin" $injectElf
if ($LASTEXITCODE -ne 0) {
Write-Warning "[build] objcopy .debug_rnglists update failed (exit $LASTEXITCODE); removing $injectElf"
Remove-Item -LiteralPath $injectElf -ErrorAction SilentlyContinue
} else {
# Baked atoms execute from RAM but are emitted as C data arrays, so
# their ELF sections lack SHF_EXECINSTR. GDB discards line rows for
# non-code sections. Mark only the debug-copy sections executable;
# the shipping ELF and PS-EXE remain byte/flag unchanged.
& $Objcopy `
--set-section-flags ".rodata=alloc,load,readonly,code,contents" `
--set-section-flags ".data=alloc,load,data,code,contents" `
$injectElf
if ($LASTEXITCODE -ne 0) {
Write-Warning "[build] objcopy atom-section flag update failed (exit $LASTEXITCODE); removing $injectElf"
Remove-Item -LiteralPath $injectElf -ErrorAction SilentlyContinue
} else {
Write-Host "[build] DWARF-injected ELF: $injectElf"
}
}
}
}
}
}
build-gte_hello