[cfe-dev] AArch64 ASM / Custom Sections and Common Variables

[Joel Winarske via cfe-dev]

This is with lld-lnk -target aarch64-unknown-windows.

On Sat, Nov 9, 2019 at 10:25 AM Joel Winarske <joel.winarske at gmail.com>
wrote:

> What is the proper way to have a variable common between two
> custom-defined sections?
>
> Example:
>
>   .global foo1
>   .section .text.foo1, "ax"
> foo1:
>   ldr w0, FooValue
>   ret
>
>   .global foo2
>   .section .text.foo2, "ax"
> foo2:
>   ldr w0, FooValue
>   ret
>
> FooValue: .word 0x00
>
> This generates "unsupported relocation type:
> fixup_aarch64_ldr_pcrel_imm19".  If I comment out the first ldr line, it
> builds, as FooValue is part of .text.foo2.
>
> If I define FooValue twice, once for each section it complains it's
> already defined.
>
>
> Joel
>
>
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