[PATCH v2 1/2] scripts: define le32_to_cpup and friends for host/target tools

[Sascha Hauer]

On Thu, Mar 20, 2025 at 06:21:13AM +0100, Ahmad Fatoum wrote:
> We already define le32_to_cpu and friends, but were missing so far the
> p-suffixed variant, which accepts a pointer.
> 
> This is easily implemented with a bit of macro boilerplate, so let's do
> that.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
> ---
> v1 -> v2:
>   - new patch
> ---
>  scripts/compiler.h | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)

This breaks compilation on riscv:

scripts/compiler.h:182:1: note: in expansion of macro 'DEFINE_CONV_P'
  182 | DEFINE_CONV_P(be, 64)
      | ^~~~~~~~~~~~~
scripts/compiler.h:170:55: error: unknown type name  __be64'
  170 |  static inline u##bits cpu_to_##endian##bits##p(const __##endian##bits *p) \
      |                                                       ^~
scripts/compiler.h:182:1: note: in expansion of macro 'DEFINE_CONV_P'
  182 | DEFINE_CONV_P(be, 64)
      | ^~~~~~~~~~~~~

I added a

#include <linux/types.h>

to scripts/compiler.h

Sascha

> 
> diff --git a/scripts/compiler.h b/scripts/compiler.h
> index d8d0e1b906df..d6807b027e03 100644
> --- a/scripts/compiler.h
> +++ b/scripts/compiler.h
> @@ -160,6 +160,27 @@ typedef uint32_t __u32;
>  # define be64_to_cpu(x)		(x)
>  #endif
>  
> +#define DEFINE_CONV_P(endian, bits) \
> +	static inline __##endian##bits endian##bits##_to_cpup(const u##bits *p) \
> +	{ \
> +		u##bits val; \
> +		memmove(&val, p, sizeof(val)); \
> +		return endian##bits##_to_cpu(val); \
> +	} \
> +	static inline u##bits cpu_to_##endian##bits##p(const __##endian##bits *p) \
> +	{ \
> +		__##endian##bits val; \
> +		memmove(&val, p, sizeof(val)); \
> +		return cpu_to_##endian##bits(val); \
> +	}
> +
> +DEFINE_CONV_P(le, 16)
> +DEFINE_CONV_P(le, 32)
> +DEFINE_CONV_P(le, 64)
> +DEFINE_CONV_P(be, 16)
> +DEFINE_CONV_P(be, 32)
> +DEFINE_CONV_P(be, 64)
> +
>  #ifndef min
>  #define min(x, y) ({                            \
>  	typeof(x) _min1 = (x);                  \
> -- 
> 2.39.5
> 
> 
> 

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