116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
#include <windows.h>
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#include <stdio.h>
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#undef CDECL
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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", 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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}
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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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t_msg _IdleThread(void *p) {
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chThdSetPriority(IDLEPRIO);
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while (TRUE) {
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ChkIntSources();
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Sleep(0);
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}
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}
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__declspec(naked) void __fastcall chSysHalt(void) {
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exit(2);
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}
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__declspec(naked) void __fastcall chSysSwitchI(Context *oldp, Context *newp) {
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__asm {
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// Switch out code
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push ebp
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push esi
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push edi
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push ebx
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mov dword ptr [ecx],esp
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// Switch in code
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mov esp,[edx]
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pop ebx
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pop edi
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pop esi
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pop ebp
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ret
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}
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}
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__declspec(naked) void __fastcall threadexit(void) {
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__asm {
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// add esp,4 ; The thread parameter
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push eax ; The exit code returned by the thread
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call chThdExit
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add esp,4
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call chSysHalt ; Should *never* happen
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}
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}
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