144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <windows.h>
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#include <stdio.h>
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#undef CDECL
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/**
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* @addtogroup WIN32SIM_CORE
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* @{
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*/
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#include <ch.h>
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static LARGE_INTEGER nextcnt;
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static LARGE_INTEGER slice;
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void InitSimCom1(void);
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void InitSimCom2(void);
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BOOL Com1ConnInterruptSimCom(void);
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BOOL Com2ConnInterruptSimCom(void);
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BOOL Com1InInterruptSimCom(void);
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BOOL Com2InInterruptSimCom(void);
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BOOL Com1OutInterruptSimCom(void);
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BOOL Com2OutInterruptSimCom(void);
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/*
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* Simulated HW initialization.
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*/
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void InitCore(void) {
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WSADATA wsaData;
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// Initialization.
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if (WSAStartup(2, &wsaData) != 0) {
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printf("Unable to locate a winsock DLL\n");
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exit(1);
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}
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printf("Win32 ChibiOS/RT simulator\n\n");
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printf("Thread structure %d bytes\n", sizeof(Thread));
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if (!QueryPerformanceFrequency(&slice)) {
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printf("QueryPerformanceFrequency() error");
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exit(1);
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}
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printf("Core Frequency %u Hz\n", (int)slice.LowPart);
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slice.QuadPart /= CH_FREQUENCY;
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QueryPerformanceCounter(&nextcnt);
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nextcnt.QuadPart += slice.QuadPart;
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InitSimCom1();
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InitSimCom2();
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fflush(stdout);
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}
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/*
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* Interrupt simulation.
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*/
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void ChkIntSources(void) {
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LARGE_INTEGER n;
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if (Com1InInterruptSimCom() || Com2InInterruptSimCom() ||
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Com1OutInterruptSimCom() || Com2OutInterruptSimCom() ||
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Com1ConnInterruptSimCom() || Com2ConnInterruptSimCom()) {
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if (chSchRescRequiredI())
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chSchDoRescheduleI();
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return;
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}
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// Interrupt Timer simulation (10ms interval).
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QueryPerformanceCounter(&n);
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if (n.QuadPart > nextcnt.QuadPart) {
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nextcnt.QuadPart += slice.QuadPart;
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chSysTimerHandlerI();
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if (chSchRescRequiredI())
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chSchDoRescheduleI();
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}
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}
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/**
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* Prints a message on the system console.
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* @param msg pointer to the message
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*/
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__attribute__((fastcall))
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void port_puts(char *msg) {
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}
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/**
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* Performs a context switch between two threads.
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* @param otp the thread to be switched out
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* @param ntp the thread to be switched in
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*/
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__attribute__((fastcall))
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void port_switch(Thread *otp, Thread *ntp) {
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register struct intctx volatile *esp asm("esp");
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asm volatile ("push %ebp \n\t" \
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"push %esi \n\t" \
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"push %edi \n\t" \
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"push %ebx");
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otp->p_ctx.esp = esp;
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esp = ntp->p_ctx.esp;
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asm volatile ("pop %ebx \n\t" \
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"pop %edi \n\t" \
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"pop %esi \n\t" \
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"pop %ebp");
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}
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/**
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* Halts the system. In this implementation it just exits the simulation.
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*/
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__attribute__((fastcall))
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void port_halt(void) {
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exit(2);
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}
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/**
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* Threads return point, it just invokes @p chThdExit().
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*/
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void threadexit(void) {
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asm volatile ("push %eax \n\t" \
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"call _chThdExit");
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}
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/** @} */
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