[PATCH 0/3] s390: gas: Fix and improve conversion of regnames to DWARF regnums

[Andreas Krebbel]

On 1/12/26 4:30 PM, Jens Remus wrote:

> Patch 1 fixes the conversion of floating-point register names f0..f15 to
> their respective DWARF register numbers.
>
> Patch 2 adds support for conversion of vector register names v0..v31 to
> their respective DWARF register numbers.
>
> Patch 3 adds support for conversion of access register names a0..a15 to
> their corresponding DWARF register numbers.
>
> Each patch adds respective tests.
>
> Support for conversion if control register names c0..c15 to their
> corresponding DWARF register numbers is not implemented, as they
> are reserved for system use.  But so are basically access registers.
> Should support for control register names be added anyway?
>
> Note that tc_s390_regname_to_dw2regnum() potentially erroneously
> converts "ap" (?) and "cc" (condition code?) to the DWARF register
> numbers 32 and 33, which are assigned to control registers c0 and c1.
> This was already the case in the s390 32-bit (s390) ELF ABI:
> https://refspecs.linuxbase.org/ELF/zSeries/lzsabi0_s390.html#AEN1564
> Can this be deprecated and then removed?
>
> Thanks and regards,
> Jens
>
> Jens Remus (3):
>    s390: gas: Fix conversion of FP register names to DWARF register
>      numbers
>    s390: gas: Support vector register names in CFI directives
>    s390: gas: Support access register names in CFI directives

Ok. Thanks!

Andreas