From f2f734ef26d7d79953862b36c4fcd720ba15a110 Mon Sep 17 00:00:00 2001 From: Natanael Copa Date: Mon, 11 Mar 2019 12:20:21 +0100 Subject: [PATCH] bus/pci: add fallback for out[lwb]_p for non GNU libc 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' Signed-off-by: Natanael Copa --- drivers/bus/pci/linux/pci_uio.c | 32 +++++++++++++++++++++++++++++--- 1 file changed, 29 insertions(+), 3 deletions(-) diff --git a/drivers/bus/pci/linux/pci_uio.c b/drivers/bus/pci/linux/pci_uio.c index 09ecbb7aa..6058cd9f8 100644 --- a/drivers/bus/pci/linux/pci_uio.c +++ b/drivers/bus/pci/linux/pci_uio.c @@ -14,6 +14,32 @@ #if defined(RTE_ARCH_X86) #include +#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 #include @@ -527,21 +553,21 @@ pci_uio_ioport_write(struct rte_pci_ioport *p, if (len >= 4) { size = 4; #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 } else if (len >= 2) { size = 2; #if defined(RTE_ARCH_X86) - outw_p(*(const uint16_t *)s, reg); + pci_uio_outw_p(*(const uint16_t *)s, reg); #else *(volatile uint16_t *)reg = *(const uint16_t *)s; #endif } else { size = 1; #if defined(RTE_ARCH_X86) - outb_p(*s, reg); + pci_uio_outb_p(*s, reg); #else *(volatile uint8_t *)reg = *s; #endif -- 2.21.0