Re: [PULL 0/7] loongarch-to-apply queue

[Peter Maydell]

On Sun, 29 Sept 2024 at 09:35, Song Gao <gaosong@loongson.cn> wrote:
>
> The following changes since commit 3b14a767eaca3df5534a162851f04787b363670e:
>
>   Merge tag 'qemu-openbios-20240924' of https://github.com/mcayland/qemu into 
> staging (2024-09-28 12:34:44 +0100)
>
> are available in the Git repository at:
>
>   https://gitlab.com/gaosong/qemu.git tags/pull-loongarch-20240929
>
> for you to fetch changes up to f7c8ef7bad7495d8c84b262a8b243efe39e56b13:
>
>   hw/loongarch/fw_cfg: Build in common_ss[] (2024-09-29 16:22:56 +0800)
>
> ----------------------------------------------------------------
> pull-loongarch-20240929
>
> ----------------------------------------------------------------

Hi; this fails to build on 32-bit hosts:


https://gitlab.com/qemu-project/qemu/-/jobs/7953018819
https://gitlab.com/qemu-project/qemu/-/jobs/7953018846

../hw/loongarch/boot.c: In function ‘init_systab_32’:
../hw/loongarch/boot.c:187:10: error: cast to pointer from integer of
different size [-Werror=int-to-pointer-cast]
187 |           ((typeof(p))((uintptr_t)(s) + \
    |            ^
../hw/loongarch/boot.c:201:9: note: in expansion of macro ‘BOOTP_ALIGN_PTR_UP’
201 |      p = BOOTP_ALIGN_PTR_UP(p, start, EFI_TABLE_ALIGN); \
    |          ^~~~~~~~~~~~~~~~~~
../hw/loongarch/boot.c:243:1: note: in expansion of macro ‘EFI_INIT_SYSTAB_GEN’
243 | EFI_INIT_SYSTAB_GEN(32)
    | ^~~~~~~~~~~~~~~~~~~
../hw/loongarch/boot.c:187:10: error: cast to pointer from integer of
different size [-Werror=int-to-pointer-cast]
187 |          ((typeof(p))((uintptr_t)(s) + \
    |           ^

etc.

This happens because if the argument 'n' to BOOTP_ALIGN_PTR_UP()
is a 64-bit type (as EFI_TABLE_ALIGN happens to be) then the
expression ends up being calculated as 64-bits, which is bigger
than the type of a pointer on these hosts.

-- PMM