It is accomplished ...

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96
2002-07-09 12:24:59 +00:00
commit 52a3801208
2025 changed files with 472889 additions and 0 deletions
@@ -0,0 +1,151 @@
+/*
+** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
+** Distributed under the terms of the NewOS License.
+*/
+#ifndef _KERNEL_ARCH_x86_CPU_H
+#define _KERNEL_ARCH_x86_CPU_H
+
+/* ??? why include this as we're normally included from that file! */
+#include <arch/cpu.h>
+
+#define KERNEL_CODE_SEG 0x8
+#define KERNEL_DATA_SEG 0x10
+#define USER_CODE_SEG 0x1b
+#define USER_DATA_SEG 0x23
+#define TSS 0x28
+#define PAGE_SIZE 4096
+
+#define _BIG_ENDIAN 0
+#define _LITTLE_ENDIAN 1
+
+typedef struct desc_struct {
+	unsigned int a,b;
+} desc_table;
+
+struct tss {
+	uint16 prev_task;
+	uint16 unused0;
+	uint32 sp0;
+	uint32 ss0;
+	uint32 sp1;
+	uint32 ss1;
+	uint32 sp2;
+	uint32 ss2;
+	uint32 sp3;
+	uint32 ss3;
+	uint32 cr3;
+	uint32 eip, eflags, eax, ecx, edx, ebx, esp, ebp, esi, edi;
+	uint32 es, cs, ss, ds, fs, gs;
+	uint32 ldt_seg_selector;
+	uint16 unused1;
+	uint16 io_map_base;
+};
+
+struct tss_descriptor {
+	uint16 limit_00_15;
+	uint16 base_00_15;
+	uint32 base_23_16 : 8;
+	uint32 type : 4;
+	uint32 zero : 1;
+	uint32 dpl : 2;
+	uint32 present : 1;
+	uint32 limit_19_16 : 4;
+	uint32 avail : 1;
+	uint32 zero1 : 1;
+	uint32 zero2 : 1;
+	uint32 granularity : 1;
+	uint32 base_31_24 : 8;
+};
+
+typedef struct ptentry {
+	unsigned int present:1;
+	unsigned int rw:1;
+	unsigned int user:1;
+	unsigned int write_through:1;
+	unsigned int cache_disabled:1;
+	unsigned int accessed:1;
+	unsigned int dirty:1;
+	unsigned int reserved:1;
+	unsigned int global:1;
+	unsigned int avail:3;
+	unsigned int addr:20;
+} ptentry;
+
+typedef struct pdentry {
+	unsigned int present:1;
+	unsigned int rw:1;
+	unsigned int user:1;
+	unsigned int write_through:1;
+	unsigned int cache_disabled:1;
+	unsigned int accessed:1;
+	unsigned int reserved:1;
+	unsigned int page_size:1;
+	unsigned int global:1;
+	unsigned int avail:3;
+	unsigned int addr:20;
+} pdentry;
+
+#define nop() __asm__ ("nop"::)
+
+void setup_system_time(unsigned int cv_factor);
+void i386_context_switch(unsigned int **old_esp, unsigned int *new_esp, addr new_pgdir);
+void i386_enter_uspace(addr entry, void *args, addr ustack_top);
+void i386_set_kstack(addr kstack);
+void i386_switch_stack_and_call(addr stack, void (*func)(void *), void *arg);
+void i386_swap_pgdir(addr new_pgdir);
+void i386_fsave_swap(void *old_fpu_state, void *new_fpu_state);
+void i386_fxsave_swap(void *old_fpu_state, void *new_fpu_state);
+
+#define read_dr3(value) \
+	__asm__("movl	%%dr3,%0" : "=r" (value))
+
+#define write_dr3(value) \
+	__asm__("movl	%0,%%dr3" :: "r" (value))
+
+#define invalidate_TLB(va) \
+	__asm__("invlpg (%0)" : : "r" (va))
+
+#define out8(value,port) \
+__asm__ ("outb %%al,%%dx"::"a" (value),"d" (port))
+
+#define out16(value,port) \
+__asm__ ("outw %%ax,%%dx"::"a" (value),"d" (port))
+
+#define out32(value,port) \
+__asm__ ("outl %%eax,%%dx"::"a" (value),"d" (port))
+
+#define in8(port) ({ \
+unsigned char _v; \
+__asm__ volatile ("inb %%dx,%%al":"=a" (_v):"d" (port)); \
+_v; \
+})
+
+#define in16(port) ({ \
+unsigned short _v; \
+__asm__ volatile ("inw %%dx,%%ax":"=a" (_v):"d" (port)); \
+_v; \
+})
+
+#define in32(port) ({ \
+unsigned int _v; \
+__asm__ volatile ("inl %%dx,%%eax":"=a" (_v):"d" (port)); \
+_v; \
+})
+
+#define out8_p(value,port) \
+__asm__ ("outb %%al,%%dx\n" \
+		"\tjmp 1f\n" \
+		"1:\tjmp 1f\n" \
+		"1:"::"a" (value),"d" (port))
+
+#define in8_p(port) ({ \
+unsigned char _v; \
+__asm__ volatile ("inb %%dx,%%al\n" \
+	"\tjmp 1f\n" \
+	"1:\tjmp 1f\n" \
+	"1:":"=a" (_v):"d" (port)); \
+_v; \
+})
+
+#endif
+