[dpdk-dev] [PATCH v3 03/15] bus/pci: add fallback for out[lwb]_p for non GNU libc
Thomas Monjalon
thomas at monjalon.net
Sat Mar 30 23:22:27 CET 2019
13/03/2019 18:06, Natanael Copa:
> Add a fallback for non-GNU libc systems like musl libc for the
> non-standard functions outl_p, outw_p and outb_p.
>
> This ifixes the following buildtime errors when building with musl libc:
> pci_uio.c:(.text+0xaa1): undefined reference to `outw_p'
> pci_uio.c:(.text+0xac5): undefined reference to `outl_p'
> pci_uio.c:(.text+0xadf): undefined reference to `outb_p'
>
> fixes https://bugs.dpdk.org/show_bug.cgi?id=35
Please use this syntax:
Bugzilla ID: 35
[...]
> #if defined(RTE_ARCH_X86)
> #include <sys/io.h>
> +#if defined(__GLIBC__)
> +#define pci_uio_outl_p outl_p
> +#define pci_uio_outw_p outw_p
> +#define pci_uio_outb_p outb_p
> +#else
> +static inline void
> +pci_uio_outl_p(unsigned int value, unsigned short int port)
> +{
> + __asm__ __volatile__ ("outl %0,%w1\noutb %%al,$0x80" : : "a" (value),
> + "Nd" (port));
> +}
> +
> +static inline void
> +pci_uio_outw_p(unsigned short int value, unsigned short int port)
> +{
> + __asm__ __volatile__ ("outw %w0,%w1\noutb %%al,$0x80" : : "a" (value),
> + "Nd" (port));
> +}
> +
> +static inline void
> +pci_uio_outb_p(unsigned char value, unsigned short int port)
> +{
> + __asm__ __volatile__ ("outb %b0,%w1\noutb %%al,$0x80" : : "a" (value),
> + "Nd" (port));
> +}
> +#endif
> #endif
[...]
> #if defined(RTE_ARCH_X86)
> - outl_p(*(const uint32_t *)s, reg);
> + pci_uio_outl_p(*(const uint32_t *)s, reg);
> #else
> *(volatile uint32_t *)reg = *(const uint32_t *)s;
> #endif
Could we manage non-x86 case in the macros pci_uio_out?
Thanks
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