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Use immediate constants for port numbers < 0x100.

This commit is contained in:
mycroft 1994-11-20 21:36:44 +00:00
parent 52bf7567d8
commit d2d4dc4654
1 changed files with 73 additions and 7 deletions
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80
sys/arch/i386/include/pio.h
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@ -1,4 +1,4 @@
/* $NetBSD: pio.h,v 1.9 1994/11/18 22:18:35 mycroft Exp $ */
/* $NetBSD: pio.h,v 1.10 1994/11/20 21:36:44 mycroft Exp $ */
/*
* Copyright (c) 1993 Charles Hannum.
@ -34,8 +34,20 @@
* Functions to provide access to i386 programmed I/O instructions.
*/
#define inb(port) \
((__builtin_constant_p((port)) && (port) < 0x100) ? \
__inbc(port) : __inb(port))
static __inline u_char
inb(int port)
__inbc(int port)
{
u_char data;
__asm __volatile("inb %1,%0" : "=a" (data) : "i" (port));
return data;
}
static __inline u_char
__inb(int port)
{
u_char data;
__asm __volatile("inb %%dx,%0" : "=a" (data) : "d" (port));
@ -49,8 +61,20 @@ insb(int port, void *addr, int cnt)
: "d" (port), "D" (addr), "c" (cnt) : "%edi", "%ecx", "memory");
}
#define inw(port) \
((__builtin_constant_p((port)) && (port) < 0x100) ? \
__inwc(port) : __inw(port))
static __inline u_short
inw(int port)
__inwc(int port)
{
u_short data;
__asm __volatile("inw %1,%0" : "=a" (data) : "i" (port));
return data;
}
static __inline u_short
__inw(int port)
{
u_short data;
__asm __volatile("inw %%dx,%0" : "=a" (data) : "d" (port));
@ -64,8 +88,20 @@ insw(int port, void *addr, int cnt)
: "d" (port), "D" (addr), "c" (cnt) : "%edi", "%ecx", "memory");
}
#define inl(port) \
((__builtin_constant_p((port)) && (port) < 0x100) ? \
__inlc(port) : __inl(port))
static __inline u_int
inl(int port)
__inlc(int port)
{
u_int data;
__asm __volatile("inl %1,%0" : "=a" (data) : "i" (port));
return data;
}
static __inline u_int
__inl(int port)
{
u_int data;
__asm __volatile("inl %%dx,%0" : "=a" (data) : "d" (port));
@ -79,8 +115,18 @@ insl(int port, void *addr, int cnt)
: "d" (port), "D" (addr), "c" (cnt) : "%edi", "%ecx", "memory");
}
#define outb(port, data) \
((__builtin_constant_p((port)) && (port) < 0x100) ? \
__outbc(port, data) : __outb(port, data))
static __inline void
outb(int port, u_char data)
__outbc(int port, u_char data)
{
__asm __volatile("outb %0,%1" : : "a" (data), "i" (port));
}
static __inline void
__outb(int port, u_char data)
{
__asm __volatile("outb %0,%%dx" : : "a" (data), "d" (port));
}
@ -92,8 +138,18 @@ outsb(int port, void *addr, int cnt)
: "d" (port), "S" (addr), "c" (cnt) : "%esi", "%ecx");
}
#define outw(port, data) \
((__builtin_constant_p((port)) && (port) < 0x100) ? \
__outwc(port, data) : __outw(port, data))
static __inline void
outw(int port, u_short data)
__outwc(int port, u_short data)
{
__asm __volatile("outw %0,%1" : : "a" (data), "i" (port));
}
static __inline void
__outw(int port, u_short data)
{
__asm __volatile("outw %0,%%dx" : : "a" (data), "d" (port));
}
@ -105,8 +161,18 @@ outsw(int port, void *addr, int cnt)
: "d" (port), "S" (addr), "c" (cnt) : "%esi", "%ecx");
}
#define outl(port, data) \
((__builtin_constant_p((port)) && (port) < 0x100) ? \
__outlc(port, data) : __outl(port, data))
static __inline void
outl(int port, u_int data)
__outlc(int port, u_int data)
{
__asm __volatile("outl %0,%1" : : "a" (data), "i" (port));
}
static __inline void
__outl(int port, u_int data)
{
__asm __volatile("outl %0,%%dx" : : "a" (data), "d" (port));
}