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Include <machine/cpufunc.h> to get i/o functions - don't duplicate almost
200 lines of code.
This commit is contained in:
Bruce Evans
parent
19b204bc85
commit
e1bc021264
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=7557
@ -1,4 +1,3 @@
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/**************************************************************************
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NETBOOT - BOOTP/TFTP Bootstrap Program
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@ -18,6 +17,7 @@ Author: Martin Renters
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#include <nfs/nfsv2.h>
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#include <nfs/nfsdiskless.h>
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#include <machine/bootinfo.h>
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#include <machine/cpufunc.h>
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#define ESC 0x1B
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@ -217,189 +217,6 @@ struct rpc_t {
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#define TFTP_MIN_PACKET_SIZE (sizeof(struct iphdr) + sizeof(struct udphdr) + 4)
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/*
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static inline unsigned short inw(a)
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unsigned short a;
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{
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unsigned char d;
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asm volatile( "inw %1, %0" : "=a" (d) : "d" (a));
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return d;
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}
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static inline unsigned char inb(a)
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unsigned short a;
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{
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unsigned char d;
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asm volatile( "inb %1, %0" : "=a" (d) : "d" (a));
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return d;
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}
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static inline void outw(a,d)
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unsigned short a;
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unsigned short d;
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{
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asm volatile( "outw %0, %1" : : "a" (d), "d" (a));
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}
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static inline void outb(a,d)
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unsigned short a;
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unsigned char d;
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{
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asm volatile( "outb %0, %1" : : "a" (d), "d" (a));
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}
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*/
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#if __GNUC__ < 2
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#define inb(port) inbv(port)
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#define outb(port, data) outbv(port, data)
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#else /* __GNUC >= 2 */
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/*
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* Use an expression-statement instead of a conditional expression
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* because gcc-2.6.0 would promote the operands of the conditional
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* and produce poor code for "if ((inb(var) & const1) == const2)".
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*/
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#define inb(port) ({ \
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u_char _data; \
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if (__builtin_constant_p((int) (port)) && (port) < 256ul) \
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_data = inbc(port); \
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else \
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_data = inbv(port); \
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_data; })
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#define outb(port, data) \
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(__builtin_constant_p((int) (port)) && (port) < 256ul \
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? outbc(port, data) : outbv(port, data))
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static __inline u_char
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inbc(u_int port)
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{
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u_char data;
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__asm __volatile("inb %1,%0" : "=a" (data) : "i" (port));
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return (data);
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}
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static __inline void
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outbc(u_int port, u_char data)
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{
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__asm __volatile("outb %0,%1" : : "a" (data), "i" (port));
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}
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#endif /* __GNUC <= 2 */
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static __inline u_char
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inbv(u_int port)
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{
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u_char data;
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/*
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* We use %%dx and not %1 here because i/o is done at %dx and not at
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* %edx, while gcc generates inferior code (movw instead of movl)
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* if we tell it to load (u_short) port.
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*/
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__asm __volatile("inb %%dx,%0" : "=a" (data) : "d" (port));
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return (data);
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}
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static __inline u_long
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inl(u_int port)
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{
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u_long data;
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__asm __volatile("inl %%dx,%0" : "=a" (data) : "d" (port));
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return (data);
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}
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static __inline void
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insb(u_int port, void *addr, size_t cnt)
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{
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__asm __volatile("cld; rep; insb"
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: : "d" (port), "D" (addr), "c" (cnt)
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: "di", "cx", "memory");
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}
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static __inline void
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insw(u_int port, void *addr, size_t cnt)
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{
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__asm __volatile("cld; rep; insw"
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: : "d" (port), "D" (addr), "c" (cnt)
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: "di", "cx", "memory");
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}
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static __inline void
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insl(u_int port, void *addr, size_t cnt)
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{
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__asm __volatile("cld; rep; insl"
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: : "d" (port), "D" (addr), "c" (cnt)
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: "di", "cx", "memory");
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}
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static __inline u_short
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inw(u_int port)
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{
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u_short data;
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__asm __volatile("inw %%dx,%0" : "=a" (data) : "d" (port));
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return (data);
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}
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static __inline void
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outbv(u_int port, u_char data)
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{
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u_char al;
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/*
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* Use an unnecessary assignment to help gcc's register allocator.
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* This make a large difference for gcc-1.40 and a tiny difference
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* for gcc-2.6.0. For gcc-1.40, al had to be ``asm("ax")'' for
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* best results. gcc-2.6.0 can't handle this.
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*/
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al = data;
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__asm __volatile("outb %0,%%dx" : : "a" (al), "d" (port));
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}
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static __inline void
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outl(u_int port, u_long data)
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{
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/*
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* outl() and outw() aren't used much so we haven't looked at
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* possible micro-optimizations such as the unnecessary
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* assignment for them.
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*/
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__asm __volatile("outl %0,%%dx" : : "a" (data), "d" (port));
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}
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static __inline void
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outsb(u_int port, void *addr, size_t cnt)
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{
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__asm __volatile("cld; rep; outsb"
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: : "d" (port), "S" (addr), "c" (cnt)
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: "si", "cx");
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}
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static __inline void
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outsw(u_int port, void *addr, size_t cnt)
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{
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__asm __volatile("cld; rep; outsw"
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: : "d" (port), "S" (addr), "c" (cnt)
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: "si", "cx");
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}
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static __inline void
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outsl(u_int port, void *addr, size_t cnt)
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{
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__asm __volatile("cld; rep; outsl"
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: : "d" (port), "S" (addr), "c" (cnt)
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: "si", "cx");
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}
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static __inline void
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outw(u_int port, u_short data)
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{
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__asm __volatile("outw %0,%%dx" : : "a" (data), "d" (port));
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}
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/***************************************************************************
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RPC Functions
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***************************************************************************/
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