hwaccess.h: Split hwaccess.h and extract hwaccess_x86_io.h out of it

The change makes it possible to mock functions from hwaccess_x86_io.h
in tests by replacing this header with a different one when built
for a test environment. The rest of hwaccess.h is fine and works
for the test environment.

BUG=b:181803212
TEST=make clean && make CONFIG_EVERYTHING=yes VERSION=none
Build flashrom before and after this patch, flashrom binary
is the same (diff flashrom_before flashrom_after shows no diffs)

Change-Id: Idd04c7b36b24e9da339348a015df4f43a03744f7
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/52499
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

1 files changed, 1 insertions, 136 deletions

diff --git a/hwaccess.h b/hwaccess.h
index 5602c159..5097ac99 100644
--- a/hwaccess.h
+++ b/hwaccess.h
@@ -112,142 +112,7 @@ cpu_to_be(64)
 #if NEED_RAW_ACCESS == 1
 #if IS_X86
 
-/* 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. 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
-
-#define __FLASHROM_HAVE_OUTB__ 1
-
-/* for iopl and outb under Solaris */
-#if defined (__sun)
-#include <sys/sysi86.h>
-#include <sys/psw.h>
-#include <asm/sunddi.h>
-#endif
-
-/* Clarification about OUTB/OUTW/OUTL argument order:
- * OUT[BWL](val, port)
- */
-
-#if defined(__FreeBSD__) || defined(__DragonFly__)
-  /* Note that Debian/kFreeBSD (FreeBSD kernel with glibc) has conflicting
-   * out[bwl] definitions in machine/cpufunc.h and sys/io.h at least in some
-   * versions. Use machine/cpufunc.h only for plain FreeBSD/DragonFlyBSD.
-   */
-  #include <sys/types.h>
-  #include <machine/cpufunc.h>
-  #define OUTB(x, y) do { u_int outb_tmp = (y); outb(outb_tmp, (x)); } while (0)
-  #define OUTW(x, y) do { u_int outw_tmp = (y); outw(outw_tmp, (x)); } while (0)
-  #define OUTL(x, y) do { u_int outl_tmp = (y); outl(outl_tmp, (x)); } while (0)
-  #define INB(x) __extension__ ({ u_int inb_tmp = (x); inb(inb_tmp); })
-  #define INW(x) __extension__ ({ u_int inw_tmp = (x); inw(inw_tmp); })
-  #define INL(x) __extension__ ({ u_int inl_tmp = (x); inl(inl_tmp); })
-#else
-
-#if defined (__sun)
-  /* Note different order for outb */
-  #define OUTB(x,y) outb(y, x)
-  #define OUTW(x,y) outw(y, x)
-  #define OUTL(x,y) outl(y, x)
-  #define INB  inb
-  #define INW  inw
-  #define INL  inl
-#else
-
-#ifdef __DJGPP__
-
-#include <pc.h>
-
-  #define OUTB(x,y) outportb(y, x)
-  #define OUTW(x,y) outportw(y, x)
-  #define OUTL(x,y) outportl(y, x)
-
-  #define INB  inportb
-  #define INW  inportw
-  #define INL  inportl
-
-#else
-
-#if defined(__MACH__) && defined(__APPLE__)
-    /* Header is part of the DirectHW library. */
-    #include <DirectHW/DirectHW.h>
-#endif
-
-  /* This is the usual glibc interface. */
-  #define OUTB outb
-  #define OUTW outw
-  #define OUTL outl
-  #define INB  inb
-  #define INW  inw
-  #define INL  inl
-#endif
-#endif
-#endif
-
-#if defined(__NetBSD__) || defined (__OpenBSD__)
-  #if defined(__i386__) || defined(__x86_64__)
-    #include <sys/types.h>
-    #include <machine/sysarch.h>
-    #if defined(__NetBSD__)
-      #if defined(__i386__)
-        #define iopl i386_iopl
-      #elif defined(__x86_64__)
-        #define iopl x86_64_iopl
-      #endif
-    #elif defined (__OpenBSD__)
-      #if defined(__i386__)
-        #define iopl i386_iopl
-      #elif defined(__amd64__)
-        #define iopl amd64_iopl
-      #endif
-    #endif
-
-static inline void outb(uint8_t value, uint16_t port)
-{
-	__asm__ volatile ("outb %b0,%w1": :"a" (value), "Nd" (port));
-}
-
-static inline uint8_t inb(uint16_t port)
-{
-	uint8_t value;
-	__asm__ volatile ("inb %w1,%0":"=a" (value):"Nd" (port));
-	return value;
-}
-
-static inline void outw(uint16_t value, uint16_t port)
-{
-	__asm__ volatile ("outw %w0,%w1": :"a" (value), "Nd" (port));
-}
-
-static inline uint16_t inw(uint16_t port)
-{
-	uint16_t value;
-	__asm__ volatile ("inw %w1,%0":"=a" (value):"Nd" (port));
-	return value;
-}
-
-static inline void outl(uint32_t value, uint16_t port)
-{
-	__asm__ volatile ("outl %0,%w1": :"a" (value), "Nd" (port));
-}
-
-static inline uint32_t inl(uint16_t port)
-{
-	uint32_t value;
-	__asm__ volatile ("inl %1,%0":"=a" (value):"Nd" (port));
-	return value;
-}
-  #endif
-#endif
+#include "hwaccess_x86_io.h"
 
 #if !(defined(__MACH__) && defined(__APPLE__)) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__DragonFly__) && !defined(__LIBPAYLOAD__)
 typedef struct { uint32_t hi, lo; } msr_t;