From 2ec1959fd1016a18ef3b2d154ce7076be8f237e4 Mon Sep 17 00:00:00 2001
From: Robert Morris <rtm@csail.mit.edu>
Date: Fri, 31 May 2019 09:45:59 -0400
Subject: fork/wait/exit work
---
x86.h | 198 ------------------------------------------------------------------
1 file changed, 198 deletions(-)
delete mode 100644 x86.h
(limited to 'x86.h')
diff --git a/x86.h b/x86.h
deleted file mode 100644
index 1ae64ac..0000000
--- a/x86.h
+++ /dev/null
@@ -1,198 +0,0 @@
-// Routines to let C code use special x86 instructions.
-
-#ifndef __ASSEMBLER__
-
-static inline uchar
-inb(ushort port)
-{
- uchar data;
-
- asm volatile("in %1,%0" : "=a" (data) : "d" (port));
- return data;
-}
-
-static inline void
-insl(int port, void *addr, int cnt)
-{
- asm volatile("cld; rep insl" :
- "=D" (addr), "=c" (cnt) :
- "d" (port), "0" (addr), "1" (cnt) :
- "memory", "cc");
-}
-
-static inline void
-outb(ushort port, uchar data)
-{
- asm volatile("out %0,%1" : : "a" (data), "d" (port));
-}
-
-static inline void
-outw(ushort port, ushort data)
-{
- asm volatile("out %0,%1" : : "a" (data), "d" (port));
-}
-
-static inline void
-outsl(int port, const void *addr, int cnt)
-{
- asm volatile("cld; rep outsl" :
- "=S" (addr), "=c" (cnt) :
- "d" (port), "0" (addr), "1" (cnt) :
- "cc");
-}
-
-static inline void
-stosb(void *addr, int data, int cnt)
-{
- asm volatile("cld; rep stosb" :
- "=D" (addr), "=c" (cnt) :
- "0" (addr), "1" (cnt), "a" (data) :
- "memory", "cc");
-}
-
-static inline void
-stosl(void *addr, int data, int cnt)
-{
- asm volatile("cld; rep stosl" :
- "=D" (addr), "=c" (cnt) :
- "0" (addr), "1" (cnt), "a" (data) :
- "memory", "cc");
-}
-
-static inline void
-lgdt(void *p)
-{
- asm volatile("lgdt (%0)" : : "r" (p) : "memory");
-}
-
-static inline void
-lidt(void *p)
-{
- asm volatile("lidt (%0)" : : "r" (p) : "memory");
-}
-
-static inline void
-ltr(ushort sel)
-{
- asm volatile("ltr %0" : : "r" (sel));
-}
-
-static inline uint64
-readeflags(void)
-{
- uint64 eflags;
- asm volatile("pushf; pop %0" : "=r" (eflags));
- return eflags;
-}
-
-static inline void
-loadgs(ushort v)
-{
- asm volatile("movw %0, %%gs" : : "r" (v));
-}
-
-static inline void
-cli(void)
-{
- asm volatile("cli");
-}
-
-static inline void
-sti(void)
-{
- asm volatile("sti");
-}
-
-static inline uint
-xchg(volatile uint *addr, uint newval)
-{
- uint result;
-
- // The + in "+m" denotes a read-modify-write operand.
- asm volatile("lock; xchgl %0, %1" :
- "+m" (*addr), "=a" (result) :
- "1" (newval) :
- "cc");
- return result;
-}
-
-static inline uint
-rcr2(void)
-{
- uint64 val;
- asm volatile("mov %%cr2,%0" : "=r" (val));
- return val;
-}
-
-static inline void
-lcr3(uint64 val)
-{
- asm volatile("mov %0,%%cr3" : : "r" (val));
-}
-
-static inline void
-writegs(uint16 v)
-{
- __asm volatile("movw %0, %%gs" : : "r" (v));
-}
-
-
-//PAGEBREAK: 36
-// Layout of the trap frame built on the stack by the
-// hardware and by trapasm.S, and passed to trap().
-struct trapframe {
- uint64 rax;
- uint64 rbx;
- uint64 rcx;
- uint64 rdx;
- uint64 rbp;
- uint64 rsi;
- uint64 rdi;
- uint64 r8;
- uint64 r9;
- uint64 r10;
- uint64 r11;
- uint64 r12;
- uint64 r13;
- uint64 r14;
- uint64 r15;
- uint64 trapno;
- uint64 err;
- uint64 rip;
- uint16 cs;
- uint16 padding[3];
- uint64 rflags;
- uint64 rsp;
- uint64 ss;
-}__attribute__((packed));
-
-struct sysframe {
- // arguments
- uint64 rdi;
- uint64 rsi;
- uint64 rdx;
- uint64 r10;
- uint64 r8;
- uint64 r9;
-
- // callee-saved registers
- uint64 r15;
- uint64 r14;
- uint64 r13;
- uint64 r12;
- uint64 rbx;
- uint64 rbp;
-
- // return value
- uint64 rax;
-
- // syscall registers
- uint64 r11; // eflags
- uint64 rcx; // rip
- uint64 rsp;
-
-}__attribute__((packed));
-
-#endif
-
-#define TF_CS 144 // offset in trapframe for saved cs
--
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