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reverted last commit (sorry, committed wrong file.. :)

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fros4943 2009-03-13 14:49:10 +00:00
parent d6ebba536c
commit da8ee90ef3
1 changed files with 49 additions and 152 deletions
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199
cpu/x86/mtarch.c
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@ -1,66 +1,9 @@
/*
* Copyright (c) 2005, Swedish Institute of Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: mtarch.c,v 1.3 2009/03/13 14:40:07 fros4943 Exp $
*/
#include <stddef.h>
#include <limits.h>
#include <stdio.h> #include <stdio.h>
#include <string.h> #include "sys/mt.h"
#include "sys/cooja_mt.h"
#ifndef __WORDSIZE
#define __WORDSIZE 32
#endif /* __WORDSIZE */
#ifndef ON_64BIT_ARCH
#if __WORDSIZE == 64
#define ON_64BIT_ARCH 1
#else /* ON_64BIT_ARCH */
#define ON_64BIT_ARCH 0
#endif /* __WORDSIZE == 64 */
#endif /* ON_64BIT_ARCH */
struct frame { struct frame {
unsigned long flags; unsigned long flags;
#if ON_64BIT_ARCH
unsigned long rbp;
unsigned long rdi;
unsigned long rsi;
unsigned long rdx;
unsigned long rcx;
unsigned long rbx;
unsigned long rax;
#else /* ON_64BIT_ARCH */
unsigned long ebp; unsigned long ebp;
unsigned long edi; unsigned long edi;
unsigned long esi; unsigned long esi;
@ -68,25 +11,27 @@ struct frame {
unsigned long ecx; unsigned long ecx;
unsigned long ebx; unsigned long ebx;
unsigned long eax; unsigned long eax;
#endif /* ON_64BIT_ARCH */
unsigned long retaddr; unsigned long retaddr;
unsigned long retaddr2; unsigned long retaddr2;
unsigned long data; unsigned long data;
}; };
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
void void
cooja_mtarch_init(void) mtarch_init(void)
{ {
} }
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
void void
cooja_mtarch_start(struct cooja_mtarch_thread *t, mtarch_start(struct mtarch_thread *t,
void (*function)(void *), void *data) void (*function)(void *), void *data)
{ {
struct frame *f = (struct frame *)&t->stack[COOJA_MTARCH_STACKSIZE - sizeof(struct frame)/sizeof(unsigned long)];
struct frame *f = (struct frame *)&t->stack[MTARCH_STACKSIZE - sizeof(struct frame)/4];
int i; int i;
for(i = 0; i < COOJA_MTARCH_STACKSIZE; ++i) { for(i = 0; i < MTARCH_STACKSIZE; ++i) {
t->stack[i] = i; t->stack[i] = i;
} }
@ -94,129 +39,81 @@ cooja_mtarch_start(struct cooja_mtarch_thread *t,
f->retaddr = (unsigned long)function; f->retaddr = (unsigned long)function;
f->data = (unsigned long)data; f->data = (unsigned long)data;
t->sp = (unsigned long)&f->flags; t->sp = (unsigned long)&f->flags;
#if ON_64BIT_ARCH
f->rbp = (unsigned long)&f->rax;
#else /* ON_64BIT_ARCH */
f->ebp = (unsigned long)&f->eax; f->ebp = (unsigned long)&f->eax;
#endif /* ON_64BIT_ARCH */
} }
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
static struct cooja_mtarch_thread *cooja_running_thread; static unsigned long spsave, sptmp;
/*--------------------------------------------------------------------------*/ static struct mtarch_thread *running_thread;
void cooja_sw(void)
static void
sw(void)
{ {
/* Store registers */
#if ON_64BIT_ARCH
__asm__ (
"pushq %rax\n\t"
"pushq %rbx\n\t"
"pushq %rcx\n\t"
"pushq %rdx\n\t"
"pushq %rsi\n\t"
"pushq %rdi\n\t"
"pushq %rbp\n\t"
"pushq %rbp\n\t");
#else /* ON_64BIT_ARCH */
__asm__ (
"pushl %eax\n\t"
"pushl %ebx\n\t"
"pushl %ecx\n\t"
"pushl %edx\n\t"
"pushl %esi\n\t"
"pushl %edi\n\t"
"pushl %ebp\n\t"
"pushl %ebp\n\t");
#endif /* ON_64BIT_ARCH */
/* Switch stack pointer */ asm("pushl %eax");
#if ON_64BIT_ARCH asm("pushl %ebx");
__asm__ ("movq %0, %%rax\n\t" : : "m" (cooja_running_thread)); asm("pushl %ecx");
__asm__ ( asm("pushl %edx");
"movq (%rax), %rbx\n\t" asm("pushl %esi");
"movq %rsp, (%rax)\n\t" asm("pushl %edi");
"movq %rbx, %rsp\n\t" asm("pushl %ebp");
); asm("pushl %ebp"); /* XXX: should push FPU flags here. */
#else /* ON_64BIT_ARCH */ asm("movl %esp, spsave");
__asm__ ("movl %0, %%eax\n\t" : : "m" (cooja_running_thread));
__asm__ (
"movl (%eax), %ebx\n\t"
"movl %esp, (%eax)\n\t"
"movl %ebx, %esp\n\t"
);
#endif /* ON_64BIT_ARCH */
/* Restore previous registers */ sptmp = running_thread->sp;
#if ON_64BIT_ARCH running_thread->sp = spsave;
__asm__ (
"popq %rbp\n\t"
"popq %rbp\n\t"
"popq %rdi\n\t"
"popq %rsi\n\t"
"popq %rdx\n\t"
"popq %rcx\n\t"
"popq %rbx\n\t"
"popq %rax\n\t"
"leave\n\t"
"ret\n\t"
);
#else /* ON_64BIT_ARCH */
__asm__ (
"popl %ebp\n\t"
"popl %ebp\n\t"
"popl %edi\n\t"
"popl %esi\n\t"
"popl %edx\n\t"
"popl %ecx\n\t"
"popl %ebx\n\t"
"popl %eax\n\t"
"leave\n\t"
"ret\n\t"
);
#endif /* ON_64BIT_ARCH */
asm("movl sptmp, %esp");
asm("popl %ebp"); /* XXX: should pop FPU flags here. */
asm("popl %ebp");
asm("popl %edi");
asm("popl %esi");
asm("popl %edx");
asm("popl %ecx");
asm("popl %ebx");
asm("popl %eax");
} }
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
void void
cooja_mtarch_exec(struct cooja_mtarch_thread *t) mtarch_exec(struct mtarch_thread *t)
{ {
cooja_running_thread = t; running_thread = t;
cooja_sw(); sw();
cooja_running_thread = NULL; running_thread = NULL;
} }
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
void void
cooja_mtarch_remove(void) mtarch_remove(void)
{ {
} }
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
void void
cooja_mtarch_yield(void) mtarch_yield(void)
{ {
cooja_sw(); sw();
} }
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
void void
cooja_mtarch_pstop(void) mtarch_pstop(void)
{ {
} }
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
void void
cooja_mtarch_pstart(void) mtarch_pstart(void)
{ {
} }
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
int int
cooja_mtarch_stack_usage(struct cooja_mt_thread *t) mtarch_stack_usage(struct mt_thread *t)
{ {
int i; int i;
for(i = 0; i < COOJA_MTARCH_STACKSIZE; ++i) { for(i = 0; i < MTARCH_STACKSIZE; ++i) {
if(t->thread.stack[i] != i) { if(t->thread.stack[i] != i) {
return COOJA_MTARCH_STACKSIZE - i; return MTARCH_STACKSIZE - i;
} }
} }
return -1;
} }
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/