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Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/i386/shared/comm/i386_io.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/i386/shared/comm/i386_io.h b/c/src/lib/libbsp/i386/shared/comm/i386_io.h new file mode 100644 index 0000000000..e8137d33d1 --- /dev/null +++ b/c/src/lib/libbsp/i386/shared/comm/i386_io.h @@ -0,0 +1,66 @@ +/* +///////////////////////////////////////////////////////////////////////////// +// $Header$ +// +// Copyright (c) 2000 - Rosimildo da Silva. All Rights Reserved. +// +// MODULE DESCRIPTION: +// +// IO Functions for the PC platform equivalent to DOS/Linux. They make +// eaiser the porting of code from these platforms. +// +// by: Rosimildo da Silva: rdasilva@connecttel.com +// +// MODIFICATION/HISTORY: +// $Log$ +// +///////////////////////////////////////////////////////////////////////////// +*/ + +#ifndef i386_io_h__ +#define i386_io_h__ + +#define rtems_inb(port) \ +({ \ + register int _inb_result; \ + \ + asm volatile ("xorl %%eax,%%eax; inb %%dx,%%al" : \ + "=a" (_inb_result) : "d" (port)); \ + _inb_result; \ +}) + +#define rtems_inw(port) \ +({ \ + register int _inbw_result; \ + \ + asm volatile ("xorl %%eax,%%eax; inw %%dx,%%ax" : \ + "=a" (_inbw_result) : "d" (port)); \ + _inbw_result; \ +}) + +#define rtems_outb(port, data) \ + asm volatile ("outb %%al,%%dx" : : "a" (data), "d" (port)) + +#define rtems_outw(port, data) \ + asm volatile ("outw %%ax,%%dx" : : "a" (data), "d" (port)) + +#define outp(port, val) rtems_outb(port,val) +#define inp(port) rtems_inb(port) + +#define outb(val, port) rtems_outb(port,val) +#define inb(port) rtems_inb(port) + +#define outb_p(val, port) rtems_outb(port,val) +#define inb_p(port) rtems_inb(port) + +#define outportb(port,val) rtems_outb(port,val) +#define inportb(port) rtems_inb(port) + +#define outw(val, port) rtems_outw(port,val) +#define inw(port) rtems_inw(port) + +#define cli() __asm__ __volatile__("cli") +#define sti() __asm__ __volatile__("sti"); + +#endif /* i386_io_h__ */ + |