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https://bitbucket.org/librepilot/librepilot.git
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1e78cc7a30
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@2364 ebee16cc-31ac-478f-84a7-5cbb03baadba
258 lines
7.3 KiB
C
258 lines
7.3 KiB
C
/*
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# This file is Copyright 2003, 2006, 2007, 2009, 2010 Dean Hall.
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#
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# This file is part of the PyMite VM.
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# The PyMite VM is free software: you can redistribute it and/or modify
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# it under the terms of the GNU GENERAL PUBLIC LICENSE Version 2.
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#
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# The PyMite VM 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.
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# A copy of the GNU GENERAL PUBLIC LICENSE Version 2
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# is seen in the file COPYING in this directory.
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*/
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#undef __FILE_ID__
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#define __FILE_ID__ 0x05
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/**
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* \file
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* \brief VM Globals
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*
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* VM globals operations.
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* PyMite's global struct def and initial values.
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*/
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#include "pm.h"
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extern unsigned char const *stdlib_img;
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static uint8_t const *bistr = (uint8_t const *)"__bi";
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/** Most PyMite globals all in one convenient place */
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volatile PmVmGlobal_t gVmGlobal;
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PmReturn_t
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global_init(void)
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{
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PmReturn_t retval;
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uint8_t *codestr = (uint8_t *)"code";
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uint8_t *pchunk;
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pPmObj_t pobj;
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#ifdef HAVE_CLASSES
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uint8_t const *initstr = (uint8_t const *)"__init__";
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#endif /* HAVE_CLASSES */
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#ifdef HAVE_GENERATORS
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uint8_t const *genstr = (uint8_t const *)"Generator";
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uint8_t const *nextstr = (uint8_t const *)"next";
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#endif /* HAVE_GENERATORS */
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#ifdef HAVE_ASSERT
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uint8_t const *exnstr = (uint8_t const *)"Exception";
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#endif /* HAVE_ASSERT */
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#ifdef HAVE_BYTEARRAY
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uint8_t const *pbastr = (uint8_t const *)"bytearray";
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#endif /* HAVE_BYTEARRAY */
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/* Clear the global struct */
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sli_memset((uint8_t *)&gVmGlobal, '\0', sizeof(PmVmGlobal_t));
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/* Set the PyMite release num (for debug and post mortem) */
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gVmGlobal.errVmRelease = PM_RELEASE;
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/* Init zero */
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retval = heap_getChunk(sizeof(PmInt_t), &pchunk);
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PM_RETURN_IF_ERROR(retval);
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pobj = (pPmObj_t)pchunk;
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OBJ_SET_TYPE(pobj, OBJ_TYPE_INT);
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((pPmInt_t)pobj)->val = (int32_t)0;
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gVmGlobal.pzero = (pPmInt_t)pobj;
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/* Init one */
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retval = heap_getChunk(sizeof(PmInt_t), &pchunk);
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PM_RETURN_IF_ERROR(retval);
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pobj = (pPmObj_t)pchunk;
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OBJ_SET_TYPE(pobj, OBJ_TYPE_INT);
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((pPmInt_t)pobj)->val = (int32_t)1;
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gVmGlobal.pone = (pPmInt_t)pobj;
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/* Init negone */
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retval = heap_getChunk(sizeof(PmInt_t), &pchunk);
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PM_RETURN_IF_ERROR(retval);
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pobj = (pPmObj_t)pchunk;
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OBJ_SET_TYPE(pobj, OBJ_TYPE_INT);
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((pPmInt_t)pobj)->val = (int32_t)-1;
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gVmGlobal.pnegone = (pPmInt_t)pobj;
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/* Init False */
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retval = heap_getChunk(sizeof(PmBoolean_t), &pchunk);
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PM_RETURN_IF_ERROR(retval);
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pobj = (pPmObj_t)pchunk;
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OBJ_SET_TYPE(pobj, OBJ_TYPE_BOOL);
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((pPmBoolean_t) pobj)->val = (int32_t)C_FALSE;
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gVmGlobal.pfalse = (pPmInt_t)pobj;
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/* Init True */
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retval = heap_getChunk(sizeof(PmBoolean_t), &pchunk);
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PM_RETURN_IF_ERROR(retval);
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pobj = (pPmObj_t)pchunk;
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OBJ_SET_TYPE(pobj, OBJ_TYPE_BOOL);
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((pPmBoolean_t) pobj)->val = (int32_t)C_TRUE;
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gVmGlobal.ptrue = (pPmInt_t)pobj;
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/* Init None */
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retval = heap_getChunk(sizeof(PmObj_t), &pchunk);
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PM_RETURN_IF_ERROR(retval);
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pobj = (pPmObj_t)pchunk;
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OBJ_SET_TYPE(pobj, OBJ_TYPE_NON);
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gVmGlobal.pnone = pobj;
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/* Init "code" string obj */
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retval = string_new((uint8_t const **)&codestr, &pobj);
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PM_RETURN_IF_ERROR(retval);
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gVmGlobal.pcodeStr = (pPmString_t)pobj;
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#ifdef HAVE_CLASSES
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/* Init "__init__" string obj */
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retval = string_new((uint8_t const **)&initstr, &pobj);
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PM_RETURN_IF_ERROR(retval);
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gVmGlobal.pinitStr = (pPmString_t)pobj;
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#endif /* HAVE_CLASSES */
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#ifdef HAVE_GENERATORS
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/* Init "Generator" string obj */
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retval = string_new((uint8_t const **)&genstr, &pobj);
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PM_RETURN_IF_ERROR(retval);
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gVmGlobal.pgenStr = (pPmString_t)pobj;
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/* Init "next" string obj */
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retval = string_new((uint8_t const **)&nextstr, &pobj);
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PM_RETURN_IF_ERROR(retval);
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gVmGlobal.pnextStr = (pPmString_t)pobj;
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#endif /* HAVE_GENERATORS */
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#ifdef HAVE_ASSERT
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/* Init "Exception" string obj */
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retval = string_new((uint8_t const **)&exnstr, &pobj);
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PM_RETURN_IF_ERROR(retval);
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gVmGlobal.pexnStr = (pPmString_t)pobj;
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#endif /* HAVE_ASSERT */
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#ifdef HAVE_BYTEARRAY
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/* Init "bytearray" string obj */
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retval = string_new((uint8_t const **)&pbastr, &pobj);
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PM_RETURN_IF_ERROR(retval);
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gVmGlobal.pbaStr = (pPmString_t)pobj;
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#endif /* HAVE_BYTEARRAY */
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/* Init empty builtins */
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gVmGlobal.builtins = C_NULL;
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/* Init native frame */
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OBJ_SET_SIZE(&gVmGlobal.nativeframe, sizeof(PmNativeFrame_t));
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OBJ_SET_TYPE(&gVmGlobal.nativeframe, OBJ_TYPE_NFM);
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gVmGlobal.nativeframe.nf_func = C_NULL;
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gVmGlobal.nativeframe.nf_stack = C_NULL;
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gVmGlobal.nativeframe.nf_active = C_FALSE;
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gVmGlobal.nativeframe.nf_numlocals = 0;
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/* Create empty threadList */
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retval = list_new(&pobj);
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gVmGlobal.threadList = (pPmList_t)pobj;
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/* Init the PmImgPaths with std image info */
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gVmGlobal.imgPaths.memspace[0] = MEMSPACE_PROG;
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gVmGlobal.imgPaths.pimg[0] = (uint8_t *)&stdlib_img;
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gVmGlobal.imgPaths.pathcount = 1;
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#ifdef HAVE_PRINT
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gVmGlobal.needSoftSpace = C_FALSE;
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gVmGlobal.somethingPrinted = C_FALSE;
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#endif /* HAVE_PRINT */
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return retval;
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}
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PmReturn_t
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global_setBuiltins(pPmFunc_t pmod)
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{
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PmReturn_t retval = PM_RET_OK;
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pPmObj_t pkey = C_NULL;
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uint8_t const *pbistr = bistr;
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uint8_t objid;
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if (PM_PBUILTINS == C_NULL)
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{
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/* Need to load builtins first */
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global_loadBuiltins();
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}
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/* Put builtins module in the module's attrs dict */
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retval = string_new(&pbistr, &pkey);
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PM_RETURN_IF_ERROR(retval);
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heap_gcPushTempRoot(pkey, &objid);
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retval = dict_setItem((pPmObj_t)pmod->f_attrs, pkey, PM_PBUILTINS);
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heap_gcPopTempRoot(objid);
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return retval;
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}
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PmReturn_t
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global_loadBuiltins(void)
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{
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PmReturn_t retval = PM_RET_OK;
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pPmObj_t pkey = C_NULL;
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uint8_t const *nonestr = (uint8_t const *)"None";
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uint8_t const *falsestr = (uint8_t const *)"False";
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uint8_t const *truestr = (uint8_t const *)"True";
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pPmObj_t pstr = C_NULL;
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pPmObj_t pbimod;
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uint8_t const *pbistr = bistr;
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/* Import the builtins */
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retval = string_new(&pbistr, &pstr);
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PM_RETURN_IF_ERROR(retval);
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retval = mod_import(pstr, &pbimod);
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PM_RETURN_IF_ERROR(retval);
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/* Must interpret builtins' root code to set the attrs */
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C_ASSERT(gVmGlobal.threadList->length == 0);
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interp_addThread((pPmFunc_t)pbimod);
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retval = interpret(INTERP_RETURN_ON_NO_THREADS);
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PM_RETURN_IF_ERROR(retval);
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/* Builtins points to the builtins module's attrs dict */
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gVmGlobal.builtins = ((pPmFunc_t)pbimod)->f_attrs;
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/* Set None manually */
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retval = string_new(&nonestr, &pkey);
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PM_RETURN_IF_ERROR(retval);
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retval = dict_setItem(PM_PBUILTINS, pkey, PM_NONE);
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PM_RETURN_IF_ERROR(retval);
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/* Set False manually */
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retval = string_new(&falsestr, &pkey);
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PM_RETURN_IF_ERROR(retval);
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retval = dict_setItem(PM_PBUILTINS, pkey, PM_FALSE);
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PM_RETURN_IF_ERROR(retval);
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/* Set True manually */
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retval = string_new(&truestr, &pkey);
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PM_RETURN_IF_ERROR(retval);
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retval = dict_setItem(PM_PBUILTINS, pkey, PM_TRUE);
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PM_RETURN_IF_ERROR(retval);
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/* Deallocate builtins module */
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retval = heap_freeChunk((pPmObj_t)pbimod);
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return retval;
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}
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