8e26b085e5
for these changes. I was mostly just staring in amazement at the screen while Axel and Thomas were discussing IA32 internals. A particularly fascinating moment was when Thomas produced the cause of a bug we had been trying to track down for hours off the top of his head (of course iret behaves specially when the NT bit is set :-). His slowness must be excused though, since he hadn't slept for more then 30 hours. ;-) The code doesn't wholeheartedly deal with multi-processor machines yet. Axel will certainly do some cleanup... git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12239 a95241bf-73f2-0310-859d-f6bbb57e9c96
147 lines
3.2 KiB
C
147 lines
3.2 KiB
C
/*
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** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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** Distributed under the terms of the NewOS License.
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*/
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#ifndef _KERNEL_ARCH_x86_CPU_H
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#define _KERNEL_ARCH_x86_CPU_H
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#include <SupportDefs.h>
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#include <arch/x86/descriptors.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct tss {
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uint16 prev_task;
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uint16 unused0;
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uint32 sp0;
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uint32 ss0;
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uint32 sp1;
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uint32 ss1;
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uint32 sp2;
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uint32 ss2;
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uint32 cr3;
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uint32 eip, eflags, eax, ecx, edx, ebx, esp, ebp, esi, edi;
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uint32 es, cs, ss, ds, fs, gs;
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uint32 ldt_seg_selector;
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uint16 unused1;
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uint16 io_map_base;
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};
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/**************************************************************************/
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struct iframe {
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unsigned int gs;
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unsigned int fs;
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unsigned int es;
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unsigned int ds;
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unsigned int edi;
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unsigned int esi;
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unsigned int ebp;
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unsigned int esp;
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unsigned int ebx;
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unsigned int edx;
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unsigned int ecx;
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unsigned int eax;
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unsigned int orig_eax;
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unsigned int orig_edx;
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unsigned int vector;
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unsigned int error_code;
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unsigned int eip;
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unsigned int cs;
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unsigned int flags;
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unsigned int user_esp;
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unsigned int user_ss;
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};
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#define nop() __asm__ ("nop"::)
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struct arch_thread;
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void setup_system_time(unsigned int cv_factor);
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void i386_context_switch(struct arch_thread *old_state, struct arch_thread *new_state, addr_t new_pgdir);
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void i386_enter_uspace(addr_t entry, void *args1, void *args2, addr_t ustack_top);
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void i386_set_tss_and_kstack(addr_t kstack);
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void i386_switch_stack_and_call(addr_t stack, void (*func)(void *), void *arg);
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void i386_swap_pgdir(addr_t new_pgdir);
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void i386_fsave(void *fpu_state);
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void i386_fxsave(void *fpu_state);
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void i386_frstor(const void *fpu_state);
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void i386_fxrstor(const void *fpu_state);
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void i386_fsave_swap(void *old_fpu_state, const void *new_fpu_state);
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void i386_fxsave_swap(void *old_fpu_state, const void *new_fpu_state);
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void x86_set_task_gate(int32 n, int32 segment);
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struct tss *x86_get_main_tss(void);
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#define read_ebp(value) \
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__asm__("movl %%ebp,%0" : "=r" (value))
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#define read_cr3(value) \
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__asm__("movl %%cr3,%0" : "=r" (value))
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#define read_dr3(value) \
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__asm__("movl %%dr3,%0" : "=r" (value))
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#define write_dr3(value) \
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__asm__("movl %0,%%dr3" : : "r" (value))
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#define invalidate_TLB(va) \
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__asm__("invlpg (%0)" : : "r" (va))
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#define out8(value,port) \
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__asm__ ("outb %%al,%%dx" : : "a" (value), "d" (port))
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#define out16(value,port) \
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__asm__ ("outw %%ax,%%dx" : : "a" (value), "d" (port))
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#define out32(value,port) \
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__asm__ ("outl %%eax,%%dx" : : "a" (value), "d" (port))
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#define in8(port) ({ \
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unsigned char _v; \
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__asm__ volatile ("inb %%dx,%%al" : "=a" (_v) : "d" (port)); \
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_v; \
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})
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#define in16(port) ({ \
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unsigned short _v; \
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__asm__ volatile ("inw %%dx,%%ax":"=a" (_v) : "d" (port)); \
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_v; \
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})
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#define in32(port) ({ \
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unsigned int _v; \
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__asm__ volatile ("inl %%dx,%%eax":"=a" (_v) : "d" (port)); \
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_v; \
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})
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#define out8_p(value,port) \
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__asm__ ("outb %%al,%%dx\n" \
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"\tjmp 1f\n" \
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"1:\tjmp 1f\n" \
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"1:" : : "a" (value), "d" (port))
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#define in8_p(port) ({ \
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unsigned char _v; \
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__asm__ volatile ("inb %%dx,%%al\n" \
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"\tjmp 1f\n" \
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"1:\tjmp 1f\n" \
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"1:" : "=a" (_v) : "d" (port)); \
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_v; \
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})
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extern segment_descriptor *gGDT;
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#ifdef __cplusplus
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} // extern "C" {
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#endif
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#endif /* _KERNEL_ARCH_x86_CPU_H */
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