diff options
Diffstat (limited to 'hwaccess.h')
| -rw-r--r-- | hwaccess.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/hwaccess.h b/hwaccess.h index 4310a68f3..f92b2af26 100644 --- a/hwaccess.h +++ b/hwaccess.h @@ -201,8 +201,14 @@ cpu_to_be(64) /* sys/io.h provides iopl(2) and x86 I/O port access functions (inb, outb etc). * It is included in glibc (thus available also on debian/kFreeBSD) but also in other libcs that mimic glibc, - * e.g. musl and uclibc. */ -#if defined(__linux__) || defined(__GLIBC__) + * e.g. musl and uclibc. Because we cannot detect the libc or existence of the header or of the instructions + * themselves safely in here we use some heuristic below: + * On Android we don't have the header file and no way for I/O port access at all. However, sys/glibc-syscalls.h + * refers to an iopl implementation and we therefore include at least that one for now. On non-Android we assume + * that a Linux system's libc has a suitable sys/io.h or (on non-Linux) we depend on glibc to offer it. */ +#if defined(__ANDROID__) +#include <sys/glibc-syscalls.h> +#elif defined(__linux__) || defined(__GLIBC__) #include <sys/io.h> #endif |