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LibrePilot/flight/Libraries/PyMite/platform/windows/plat.c

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/*
* PyMite - A flyweight Python interpreter for 8-bit and larger microcontrollers.
* Copyright 2002 Dean Hall. All rights reserved.
* PyMite is offered through one of two licenses: commercial or open-source.
* See the LICENSE file at the root of this package for licensing details.
*
* Win32 host version, tweaked from original 'desktop' version
*/
#undef __FILE_ID__
#define __FILE_ID__ 0x70
// determine how we handle time in Windows
//#define USE_SETTIMER 1 /* this requires an active message loop*/
#define USE_TIMESETEVENT 1 /* (Older) Windows multi-media function */
//#define USE_CREATETIMERQUEUETIMER 0 /* CreateTimerQueueTimer function */
/** PyMite platform-specific routines for Desktop target */
#include <stdio.h>
#include <string.h>
#include "pm.h"
//#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#if defined(USE_SETTIMER)
/* local prototypes */
VOID CALLBACK on_timer(HWND hWnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime);
#endif
#if defined(USE_TIMESETEVENT)
// shortcut so we do not need an explicit addition to the linker command line
#pragma comment(lib, "winmm")
void CALLBACK on_mm_timer(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2);
#endif
/* local variables*/
static UINT_PTR idEvent = 0;
static DWORD dwLastTime = 0;
static const UINT uTimeOut = 200; /* # of ms for each timer tick */
/* Desktop target shall use stdio for I/O routines. */
PmReturn_t
plat_init(void)
{
/*
* The *nix version used the sigalrm to generate a timer. On Windows, we
* use a standard Windows timer. Note we do not use an HWND so we do not
* need to actually create any windows. But we do need a Windows event loop
* to allow the timer callback to be called properly.
*/
dwLastTime = GetTickCount();
#if defined(USE_SETTIMER)
idEvent = SetTimer(NULL, 0, uTimeOut, on_timer);
// use the return value in a KillTimer function. But we need a plat_uninit() call...
#endif
#if defined(USE_TIMESETEVENT)
idEvent = timeSetEvent(uTimeOut, 0 /*change later, if system load too high*/, on_mm_timer, 0, TIME_PERIODIC|TIME_CALLBACK_FUNCTION);
#endif
return PM_RET_OK;
}
#if defined(USE_SETTIMER)
/* Called from Windows every X ms */
VOID CALLBACK on_timer(HWND hWnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime)
{
PmReturn_t retval = PM_RET_OK;
DWORD delta = dwTime - dwLastTime;
//printf("diff = %ld\n", delta);
// update our system time
pm_timerMsTicks = dwTime;
retval = pm_vmPeriodic((uint16_t)delta);
dwLastTime = dwTime;
PM_REPORT_IF_ERROR(retval);
}
#endif
#if defined(USE_TIMESETEVENT)
void
CALLBACK on_mm_timer(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
{
PmReturn_t retval = PM_RET_OK;
DWORD dwTime = GetTickCount();
DWORD delta = dwTime - dwLastTime;
//printf("diff = %ld\n", delta);
// update our system time
pm_timerMsTicks = dwTime;
retval = pm_vmPeriodic((uint16_t)delta);
dwLastTime = dwTime;
PM_REPORT_IF_ERROR(retval);
}
#endif
/*
* Undo anything we may have done in the plat_init function
*/
PmReturn_t
plat_deinit(void)
{
#if defined(USE_SETTIMER)
KillTimer(idEvent);
idEvent = 0;
#endif
#if defined(USE_TIMESETEVENT)
timeKillEvent(idEvent);
idEvent = 0;
#endif
return PM_RET_OK;
}
/*
* Gives us time to update our clock, etc.
*/
void
plat_tick(void)
{
//BOOL bRet;
MSG msg;
//if ((bRet = GetMessage(&msg, 0, 0, 0)) != 0)
if (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
/*
* Gets a byte from the address in the designated memory space
* Post-increments *paddr.
*/
uint8_t
plat_memGetByte(PmMemSpace_t memspace, uint8_t const **paddr)
{
uint8_t b = 0;
switch (memspace)
{
case MEMSPACE_RAM:
case MEMSPACE_PROG:
b = **paddr;
*paddr += 1;
return b;
case MEMSPACE_EEPROM:
case MEMSPACE_SEEPROM:
case MEMSPACE_OTHER0:
case MEMSPACE_OTHER1:
case MEMSPACE_OTHER2:
case MEMSPACE_OTHER3:
default:
return 0;
}
}
/* Desktop target shall use stdio for I/O routines */
PmReturn_t
plat_getByte(uint8_t *b)
{
int c;
PmReturn_t retval = PM_RET_OK;
c = getchar();
*b = c & 0xFF;
if (c == EOF)
{
PM_RAISE(retval, PM_RET_EX_IO);
}
return retval;
}
/* Desktop target shall use stdio for I/O routines */
PmReturn_t
plat_putByte(uint8_t b)
{
int i;
PmReturn_t retval = PM_RET_OK;
i = putchar(b);
fflush(stdout);
if ((i != b) || (i == EOF))
{
PM_RAISE(retval, PM_RET_EX_IO);
}
return retval;
}
PmReturn_t
plat_getMsTicks(uint32_t *r_ticks)
{
*r_ticks = pm_timerMsTicks;
return PM_RET_OK;
}
void
plat_reportError(PmReturn_t result)
{
#ifdef HAVE_DEBUG_INFO
#define LEN_FNLOOKUP 26
#define LEN_EXNLOOKUP 17
uint8_t res;
pPmFrame_t pframe;
pPmObj_t pstr;
PmReturn_t retval;
uint8_t bcindex;
uint16_t bcsum;
uint16_t linesum;
uint16_t len_lnotab;
uint8_t const *plnotab;
uint16_t i;
/* This table should match src/vm/fileid.txt */
char const * const fnlookup[LEN_FNLOOKUP] = {
"<no file>",
"codeobj.c",
"dict.c",
"frame.c",
"func.c",
"global.c",
"heap.c",
"img.c",
"int.c",
"interp.c",
"pmstdlib_nat.c",
"list.c",
"main.c",
"mem.c",
"module.c",
"obj.c",
"seglist.c",
"sli.c",
"strobj.c",
"tuple.c",
"seq.c",
"pm.c",
"thread.c",
"float.c",
"class.c",
"bytearray.c",
};
/* This table should match src/vm/pm.h PmReturn_t */
char const * const exnlookup[LEN_EXNLOOKUP] = {
"Exception",
"SystemExit",
"IoError",
"ZeroDivisionError",
"AssertionError",
"AttributeError",
"ImportError",
"IndexError",
"KeyError",
"MemoryError",
"NameError",
"SyntaxError",
"SystemError",
"TypeError",
"ValueError",
"StopIteration",
"Warning",
};
/* Print traceback */
printf("Traceback (most recent call first):\n");
/* Get the top frame */
pframe = gVmGlobal.pthread->pframe;
/* If it's the native frame, print the native function name */
if (pframe == (pPmFrame_t)&(gVmGlobal.nativeframe))
{
/* The last name in the names tuple of the code obj is the name */
retval = tuple_getItem((pPmObj_t)gVmGlobal.nativeframe.nf_func->
f_co->co_names, -1, &pstr);
if ((retval) != PM_RET_OK)
{
printf(" Unable to get native func name.\n");
return;
}
else
{
printf(" %s() __NATIVE__\n", ((pPmString_t)pstr)->val);
}
/* Get the frame that called the native frame */
pframe = (pPmFrame_t)gVmGlobal.nativeframe.nf_back;
}
/* Print the remaining frame stack */
for (; pframe != C_NULL; pframe = pframe->fo_back)
{
/* The last name in the names tuple of the code obj is the name */
retval = tuple_getItem((pPmObj_t)pframe->fo_func->f_co->co_names,
-1,
&pstr);
if ((retval) != PM_RET_OK) break;
/*
* Get the line number of the current bytecode. Algorithm comes from:
* http://svn.python.org/view/python/trunk/Objects/lnotab_notes.txt?view=markup
*/
bcindex = pframe->fo_ip - pframe->fo_func->f_co->co_codeaddr;
plnotab = pframe->fo_func->f_co->co_lnotab;
len_lnotab = mem_getWord(MEMSPACE_PROG, &plnotab);
bcsum = 0;
linesum = pframe->fo_func->f_co->co_firstlineno;
for (i = 0; i < len_lnotab; i += 2)
{
bcsum += mem_getByte(MEMSPACE_PROG, &plnotab);
if (bcsum > bcindex) break;
linesum += mem_getByte(MEMSPACE_PROG, &plnotab);
}
printf(" File \"%s\", line %d, in %s\n",
((pPmFrame_t)pframe)->fo_func->f_co->co_filename,
linesum,
((pPmString_t)pstr)->val);
}
/* Print error */
res = (uint8_t)result;
if ((res > 0) && ((res - PM_RET_EX) < LEN_EXNLOOKUP))
{
printf("%s", exnlookup[res - PM_RET_EX]);
}
else
{
printf("Error code 0x%02X", result);
}
printf(" detected by ");
if ((gVmGlobal.errFileId > 0) && (gVmGlobal.errFileId < LEN_FNLOOKUP))
{
printf("%s:", fnlookup[gVmGlobal.errFileId]);
}
else
{
printf("FileId 0x%02X line ", gVmGlobal.errFileId);
}
printf("%d\n", gVmGlobal.errLineNum);
#else /* HAVE_DEBUG_INFO */
/* Print error */
printf("Error: 0x%02X\n", result);
printf(" Release: 0x%02X\n", gVmGlobal.errVmRelease);
printf(" FileId: 0x%02X\n", gVmGlobal.errFileId);
printf(" LineNum: %d\n", gVmGlobal.errLineNum);
/* Print traceback */
{
pPmObj_t pframe;
pPmObj_t pstr;
PmReturn_t retval;
printf("Traceback (top first):\n");
/* Get the top frame */
pframe = (pPmObj_t)gVmGlobal.pthread->pframe;
/* If it's the native frame, print the native function name */
if (pframe == (pPmObj_t)&(gVmGlobal.nativeframe))
{
/* The last name in the names tuple of the code obj is the name */
retval = tuple_getItem((pPmObj_t)gVmGlobal.nativeframe.nf_func->
f_co->co_names, -1, &pstr);
if ((retval) != PM_RET_OK)
{
printf(" Unable to get native func name.\n");
return;
}
else
{
printf(" %s() __NATIVE__\n", ((pPmString_t)pstr)->val);
}
/* Get the frame that called the native frame */
pframe = (pPmObj_t)gVmGlobal.nativeframe.nf_back;
}
/* Print the remaining frame stack */
for (;
pframe != C_NULL;
pframe = (pPmObj_t)((pPmFrame_t)pframe)->fo_back)
{
/* The last name in the names tuple of the code obj is the name */
retval = tuple_getItem((pPmObj_t)((pPmFrame_t)pframe)->
fo_func->f_co->co_names, -1, &pstr);
if ((retval) != PM_RET_OK) break;
printf(" %s()\n", ((pPmString_t)pstr)->val);
}
printf(" <module>.\n");
}
#endif /* HAVE_DEBUG_INFO */
}
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