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std.Target: Assorted corrections, plus cleanup around ELF/COFF machine types #21020

Merged
merged 14 commits into from
Aug 16, 2024
Merged

std.Target: Assorted corrections, plus cleanup around ELF/COFF machine types #21020

merged 14 commits into from
Aug 16, 2024

Commits on Aug 15, 2024

  1. std.Target: Make some functions handle driverkit alongside other Appl… 

    …e OSs.

Reference for versions: https://developer.apple.com/support/xcode
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  2. std.Target: Fix isGnuLibC() to handle hurd too.

    @alexrp
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  3. std.Target: Change requiresLibC() to return true for aix. 

    AIX does not have a stable syscall interface; libc is required.
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  4. std.Target: Clean up Arch.toElfMachine().

    @alexrp
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  5. std.Target: Fix Arch.toElfMachine() for arc. 

    The arc tag means ARCv2.
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  6. std.Target: Fix Arch.toElfMachine() for mips. 

    EM_MIPS_RS3_LE is obsolete; all mips targets just use EM_MIPS.

Also, fun fact: EM_MIPS_RS3_LE is actually big endian!
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  7. std.Target: Clean up Arch.toCoffMachine().

    @alexrp
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  8. std.Target: Don't match big endian architectures in Arch.toCoffMachin… 

    …e().

All of these were mapping to types that are little endian. In fact, I can find
no evidence that either Windows or UEFI have ever been used on big endian
systems.
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  9. std.Target: Don't match PowerPC in Arch.toCoffMachine(). 

    It's entirely unclear whether this should map to POWERPC or POWERPCFP, and as I
can find no evidence of people producing PE files for PowerPC since Windows NT,
let's just not make a likely-wrong guess. We can revisit this if the need ever
actually arises.
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  10. std.coff: Remove MachineType.fromTargetCpuArch(). 

    This does the same thing as std.Target.Cpu.Arch.toCoffMachine(). Just use that.
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  11. std.coff: Capitalize MachineType.{Unknown,Thumb} for consistency.

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  12. std.Target: Pull toCoffMachine()/toElfMachine() up from Arch to Target. 

    This enables them to give more correct results.

Contributes to ziglang#20771.
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  13. std.Target: Return the correct value for elfiamcu in toElfMachine().

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  14. std.Target: Return the correct value for 32-bit sparc v9 in toElfMach… 

    …ine().
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