0,0 → 1,162 |
/* |
* Copyright (C) 2005 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
#ifndef __amd64_ASM_H__ |
#define __amd64_ASM_H__ |
|
#include <arch/types.h> |
#include <config.h> |
|
|
void asm_delay_loop(__u32 t); |
void asm_fake_loop(__u32 t); |
|
/* TODO: implement the real stuff */ |
static inline __address get_stack_base(void) |
{ |
return NULL; |
} |
|
static inline void cpu_sleep(void) { __asm__("hlt"); }; |
static inline void cpu_halt(void) { __asm__("hlt"); }; |
|
|
static inline __u8 inb(__u16 port) |
{ |
__u8 out; |
|
asm ( |
"mov %0, %%dx;" |
"inb %%dx,%%al;" |
"mov %%al, %1;" |
:"=m"(out) |
:"m"(port) |
:"%dx","%al" |
); |
return out; |
} |
|
static inline __u8 outb(__u16 port,__u8 b) |
{ |
asm ( |
"mov %0,%%dx;" |
"mov %1,%%al;" |
"outb %%al,%%dx;" |
: |
:"m"( port), "m" (b) |
:"%dx","%al" |
); |
} |
|
/** Set priority level low |
* |
* Enable interrupts and return previous |
* value of EFLAGS. |
*/ |
static inline pri_t cpu_priority_low(void) { |
pri_t v; |
__asm__ volatile ( |
"pushfq\n" |
"popq %0\n" |
"sti\n" |
: "=r" (v) |
); |
return v; |
} |
|
/** Set priority level high |
* |
* Disable interrupts and return previous |
* value of EFLAGS. |
*/ |
static inline pri_t cpu_priority_high(void) { |
pri_t v; |
__asm__ volatile ( |
"pushfq\n" |
"popq %0\n" |
"cli\n" |
: "=r" (v) |
); |
return v; |
} |
|
/** Restore priority level |
* |
* Restore EFLAGS. |
*/ |
static inline void cpu_priority_restore(pri_t pri) { |
__asm__ volatile ( |
"pushq %0\n" |
"popfq\n" |
: : "r" (pri) |
); |
} |
|
/** Return raw priority level |
* |
* Return EFLAFS. |
*/ |
static inline pri_t cpu_priority_read(void) { |
pri_t v; |
__asm__ volatile ( |
"pushfq\n" |
"popq %0\n" |
: "=r" (v) |
); |
return v; |
} |
|
/** Read CR2 |
* |
* Return value in CR2 |
* |
* @return Value read. |
*/ |
static inline __u64 read_cr2(void) { __u64 v; __asm__ volatile ("movq %%cr2,%0" : "=r" (v)); return v; } |
|
/** Write CR3 |
* |
* Write value to CR3. |
* |
* @param v Value to be written. |
*/ |
static inline void write_cr3(__u64 v) { __asm__ volatile ("movq %0,%%cr3\n" : : "r" (v)); } |
|
/** Read CR3 |
* |
* Return value in CR3 |
* |
* @return Value read. |
*/ |
static inline __u64 read_cr3(void) { __u64 v; __asm__ volatile ("movq %%cr3,%0" : "=r" (v)); return v; } |
|
|
extern size_t interrupt_handler_size; |
extern void interrupt_handlers(void); |
|
#endif |