1 /* @(#) pf_inner.c 98/03/16 1.7 */
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2 /***************************************************************
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3 ** Inner Interpreter for Forth based on 'C'
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6 ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom
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8 ** The pForth software code is dedicated to the public domain,
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9 ** and any third party may reproduce, distribute and modify
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10 ** the pForth software code or any derivative works thereof
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11 ** without any compensation or license. The pForth software
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12 ** code is provided on an "as is" basis without any warranty
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13 ** of any kind, including, without limitation, the implied
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14 ** warranties of merchantability and fitness for a particular
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15 ** purpose and their equivalents under the laws of any jurisdiction.
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17 ****************************************************************
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19 ** 940502 PLB Creation.
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20 ** 940505 PLB More macros.
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21 ** 940509 PLB Moved all stack stuff into pfCatch.
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22 ** 941014 PLB Converted to flat secondary strusture.
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23 ** 941027 rdg added casts to ID_SP_FETCH, ID_RP_FETCH,
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24 ** and ID_HERE for armcc
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25 ** 941130 PLB Made w@ unsigned
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27 ***************************************************************/
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35 #define SYSTEM_LOAD_FILE "system.fth"
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37 /***************************************************************
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38 ** Macros for data stack access.
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39 ** TOS is cached in a register in pfCatch.
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40 ***************************************************************/
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42 #define STKPTR (DataStackPtr)
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43 #define M_POP (*(STKPTR++))
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44 #define M_PUSH(n) {*(--(STKPTR)) = (cell) (n);}
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45 #define M_STACK(n) (STKPTR[n])
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47 #define TOS (TopOfStack)
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48 #define PUSH_TOS M_PUSH(TOS)
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49 #define M_DUP PUSH_TOS;
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50 #define M_DROP { TOS = M_POP; }
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53 /***************************************************************
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54 ** Macros for Floating Point stack access.
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55 ***************************************************************/
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56 #ifdef PF_SUPPORT_FP
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57 #define FP_STKPTR (FloatStackPtr)
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58 #define M_FP_SPZERO (gCurrentTask->td_FloatStackBase)
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59 #define M_FP_POP (*(FP_STKPTR++))
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60 #define M_FP_PUSH(n) {*(--(FP_STKPTR)) = (PF_FLOAT) (n);}
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61 #define M_FP_STACK(n) (FP_STKPTR[n])
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63 #define FP_TOS (fpTopOfStack)
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64 #define PUSH_FP_TOS M_FP_PUSH(FP_TOS)
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65 #define M_FP_DUP PUSH_FP_TOS;
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66 #define M_FP_DROP { FP_TOS = M_FP_POP; }
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69 /***************************************************************
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70 ** Macros for return stack access.
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71 ***************************************************************/
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73 #define TORPTR (ReturnStackPtr)
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74 #define M_R_DROP {TORPTR++;}
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75 #define M_R_POP (*(TORPTR++))
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76 #define M_R_PICK(n) (TORPTR[n])
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77 #define M_R_PUSH(n) {*(--(TORPTR)) = (cell) (n);}
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79 /***************************************************************
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80 ** Misc Forth macros
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81 ***************************************************************/
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83 #define M_BRANCH { InsPtr = (cell *) (((uint8 *) InsPtr) + READ_LONG_DIC(InsPtr)); }
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85 /* Cache top of data stack like in JForth. */
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86 #ifdef PF_SUPPORT_FP
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87 #define LOAD_REGISTERS \
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89 STKPTR = gCurrentTask->td_StackPtr; \
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91 FP_STKPTR = gCurrentTask->td_FloatStackPtr; \
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92 FP_TOS = M_FP_POP; \
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93 TORPTR = gCurrentTask->td_ReturnPtr; \
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96 #define SAVE_REGISTERS \
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98 gCurrentTask->td_ReturnPtr = TORPTR; \
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100 gCurrentTask->td_StackPtr = STKPTR; \
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101 M_FP_PUSH( FP_TOS ); \
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102 gCurrentTask->td_FloatStackPtr = FP_STKPTR; \
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106 /* Cache top of data stack like in JForth. */
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107 #define LOAD_REGISTERS \
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109 STKPTR = gCurrentTask->td_StackPtr; \
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111 TORPTR = gCurrentTask->td_ReturnPtr; \
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114 #define SAVE_REGISTERS \
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116 gCurrentTask->td_ReturnPtr = TORPTR; \
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118 gCurrentTask->td_StackPtr = STKPTR; \
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127 #define DO_VAR(varname) { PUSH_TOS; TOS = (cell) &varname; }
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129 #ifdef PF_SUPPORT_FP
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130 #define M_THROW(err) \
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132 ExceptionReturnCode = (ThrowCode)(err); \
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133 TORPTR = InitialReturnStack; /* Will cause return to 'C' */ \
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134 STKPTR = InitialDataStack; \
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135 FP_STKPTR = InitialFloatStack; \
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138 #define M_THROW(err) \
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140 ExceptionReturnCode = (err); \
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141 TORPTR = InitialReturnStack; /* Will cause return to 'C' */ \
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142 STKPTR = InitialDataStack; \
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146 /***************************************************************
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148 ***************************************************************/
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150 #define BINARY_OP( op ) { TOS = M_POP op TOS; }
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151 #define endcase break
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153 #if defined(PF_NO_SHELL) || !defined(PF_SUPPORT_TRACE)
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154 #define TRACENAMES /* no names */
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156 /* Display name of executing routine. */
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157 static void TraceNames( ExecToken Token, int32 Level )
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162 if( ffTokenToName( Token, &DebugName ) )
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165 if( gCurrentTask->td_OUT > 0 ) EMIT_CR;
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167 for( i=0; i<Level; i++ )
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171 TypeName( DebugName );
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172 /* Space out to column N then .S */
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173 NumSpaces = 30 - gCurrentTask->td_OUT;
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174 for( i=0; i < NumSpaces; i++ )
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179 /* No longer needed? gCurrentTask->td_OUT = 0; */ /* !!! Hack for ffDotS() */
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184 MSG_NUM_H("Couldn't find Name for ", Token);
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188 #define TRACENAMES \
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189 if( (gVarTraceLevel > Level) ) \
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190 { SAVE_REGISTERS; TraceNames( Token, Level ); LOAD_REGISTERS; }
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191 #endif /* PF_NO_SHELL */
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193 /* Use local copy of CODE_BASE for speed. */
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194 #define LOCAL_CODEREL_TO_ABS( a ) ((cell *) (((int32) a) + CodeBase))
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196 static const char *pfSelectFileModeCreate( int fam );
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197 static const char *pfSelectFileModeOpen( int fam );
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199 /**************************************************************/
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200 static const char *pfSelectFileModeCreate( int fam )
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202 const char *famText = NULL;
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205 case (PF_FAM_WRITE_ONLY + PF_FAM_BINARY_FLAG):
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206 famText = PF_FAM_BIN_CREATE_WO;
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208 case (PF_FAM_READ_WRITE + PF_FAM_BINARY_FLAG):
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209 famText = PF_FAM_BIN_CREATE_RW;
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211 case PF_FAM_WRITE_ONLY:
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212 famText = PF_FAM_CREATE_WO;
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214 case PF_FAM_READ_WRITE:
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215 famText = PF_FAM_CREATE_RW;
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218 famText = "illegal";
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224 /**************************************************************/
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225 static const char *pfSelectFileModeOpen( int fam )
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227 const char *famText = NULL;
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230 case (PF_FAM_READ_ONLY + PF_FAM_BINARY_FLAG):
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231 famText = PF_FAM_BIN_OPEN_RO;
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233 case (PF_FAM_WRITE_ONLY + PF_FAM_BINARY_FLAG):
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234 famText = PF_FAM_BIN_CREATE_WO;
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236 case (PF_FAM_READ_WRITE + PF_FAM_BINARY_FLAG):
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237 famText = PF_FAM_BIN_OPEN_RW;
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239 case PF_FAM_READ_ONLY:
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240 famText = PF_FAM_OPEN_RO;
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242 case PF_FAM_WRITE_ONLY:
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243 famText = PF_FAM_CREATE_WO;
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245 case PF_FAM_READ_WRITE:
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247 famText = PF_FAM_OPEN_RW;
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253 /**************************************************************/
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254 int pfCatch( ExecToken XT )
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256 register cell TopOfStack; /* Cache for faster execution. */
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257 register cell *DataStackPtr;
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258 register cell *ReturnStackPtr;
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259 register cell *InsPtr = NULL;
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260 register cell Token;
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263 #ifdef PF_SUPPORT_FP
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264 PF_FLOAT fpTopOfStack;
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265 PF_FLOAT *FloatStackPtr;
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266 PF_FLOAT fpScratch;
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268 PF_FLOAT *InitialFloatStack;
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270 #ifdef PF_SUPPORT_TRACE
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273 cell *LocalsPtr = NULL;
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275 cell *InitialReturnStack;
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276 cell *InitialDataStack;
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277 cell FakeSecondary[2];
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280 FileStream *FileID;
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281 uint8 *CodeBase = CODE_BASE;
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282 ThrowCode ExceptionReturnCode = 0;
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285 gExecutionDepth += 1;
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286 PRT(("pfCatch( 0x%x ), depth = %d\n", XT, gExecutionDepth ));
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290 ** Initialize FakeSecondary this way to avoid having stuff in the data section,
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291 ** which is not supported for some embedded system loaders.
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293 FakeSecondary[0] = 0;
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294 FakeSecondary[1] = ID_EXIT; /* For EXECUTE */
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296 /* Move data from task structure to registers for speed. */
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299 /* Save initial stack depths for THROW */
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300 InitialReturnStack = TORPTR;
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301 InitialDataStack = STKPTR ;
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302 #ifdef PF_SUPPORT_FP
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303 InitialFloatStack = FP_STKPTR;
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310 DBUG(("pfCatch: Token = 0x%x\n", Token ));
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312 /* --------------------------------------------------------------- */
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313 /* If secondary, thread down code tree until we hit a primitive. */
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314 while( !IsTokenPrimitive( Token ) )
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316 #ifdef PF_SUPPORT_TRACE
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317 if((gVarTraceFlags & TRACE_INNER) )
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319 MSG("pfCatch: Secondary Token = 0x");
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321 MSG_NUM_H(", InsPtr = 0x", InsPtr);
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326 /* Save IP on return stack like a JSR. */
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327 M_R_PUSH( InsPtr );
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329 /* Convert execution token to absolute address. */
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330 InsPtr = (cell *) ( LOCAL_CODEREL_TO_ABS(Token) );
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332 /* Fetch token at IP. */
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333 Token = READ_LONG_DIC(InsPtr++);
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335 #ifdef PF_SUPPORT_TRACE
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336 /* Bump level for trace display */
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342 #ifdef PF_SUPPORT_TRACE
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346 /* Execute primitive Token. */
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350 /* Pop up a level in Forth inner interpreter.
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351 ** Used to implement semicolon.
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352 ** Put first in switch because ID_EXIT==0 */
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354 InsPtr = ( cell *) M_R_POP;
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355 #ifdef PF_SUPPORT_TRACE
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360 case ID_1MINUS: TOS--; endcase;
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362 case ID_1PLUS: TOS++; endcase;
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364 #ifndef PF_NO_SHELL
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366 ff2Literal( TOS, M_POP );
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369 #endif /* !PF_NO_SHELL */
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371 case ID_2LITERAL_P:
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372 /* hi part stored first, put on top of stack */
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374 TOS = READ_LONG_DIC(InsPtr++);
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375 M_PUSH(READ_LONG_DIC(InsPtr++));
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378 case ID_2MINUS: TOS -= 2; endcase;
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380 case ID_2PLUS: TOS += 2; endcase;
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383 case ID_2OVER: /* ( a b c d -- a b c d a b ) */
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385 Scratch = M_STACK(3);
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390 case ID_2SWAP: /* ( a b c d -- c d a b ) */
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391 Scratch = M_STACK(0); /* c */
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392 M_STACK(0) = M_STACK(2); /* a */
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393 M_STACK(2) = Scratch; /* c */
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394 Scratch = TOS; /* d */
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395 TOS = M_STACK(1); /* b */
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396 M_STACK(1) = Scratch; /* d */
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399 case ID_2DUP: /* ( a b -- a b a b ) */
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401 Scratch = M_STACK(1);
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407 M_PUSH( (*(TORPTR+1)) );
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423 case ID_ACCEPT_P: /* ( c-addr +n1 -- +n2 ) */
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424 CharPtr = (char *) M_POP;
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425 TOS = ioAccept( CharPtr, TOS );
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428 #ifndef PF_NO_SHELL
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430 ffALiteral( ABS_TO_CODEREL(TOS) );
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433 #endif /* !PF_NO_SHELL */
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435 case ID_ALITERAL_P:
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437 TOS = (cell) LOCAL_CODEREL_TO_ABS( READ_LONG_DIC(InsPtr++) );
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440 /* Allocate some extra and put validation identifier at base */
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441 #define PF_MEMORY_VALIDATOR (0xA81B4D69)
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443 /* Allocate at least one cell's worth because we clobber first cell. */
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444 if ( TOS < sizeof(cell) )
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446 Temp = sizeof(cell);
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452 /* Allocate extra cells worth because we store validation info. */
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453 CellPtr = (cell *) pfAllocMem( Temp + sizeof(cell) );
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456 /* This was broken into two steps because different compilers incremented
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457 ** CellPtr before or after the XOR step. */
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458 Temp = (int32)CellPtr ^ PF_MEMORY_VALIDATOR;
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460 M_PUSH( (cell) CellPtr );
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466 TOS = -1; /* FIXME Fix error code. */
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470 case ID_AND: BINARY_OP( & ); endcase;
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472 case ID_ARSHIFT: BINARY_OP( >> ); endcase; /* Arithmetic right shift */
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474 case ID_BODY_OFFSET:
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476 TOS = CREATE_BODY_OFFSET;
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479 /* Branch is followed by an offset relative to address of offset. */
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481 DBUGX(("Before Branch: IP = 0x%x\n", InsPtr ));
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483 DBUGX(("After Branch: IP = 0x%x\n", InsPtr ));
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487 M_THROW( THROW_BYE );
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491 MSG("Emergency exit.\n");
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499 Scratch = pfCatch( Scratch );
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507 Scratch = READ_LONG_DIC(InsPtr++);
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508 CallUserFunction( Scratch & 0xFFFF,
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509 (Scratch >> 31) & 1,
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510 (Scratch >> 24) & 0x7F );
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514 case ID_CFETCH: TOS = *((uint8 *) TOS); endcase;
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516 case ID_CMOVE: /* ( src dst n -- ) */
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518 register char *DstPtr = (char *) M_POP; /* dst */
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519 CharPtr = (char *) M_POP; /* src */
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520 for( Scratch=0; (uint32) Scratch < (uint32) TOS ; Scratch++ )
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522 *DstPtr++ = *CharPtr++;
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528 case ID_CMOVE_UP: /* ( src dst n -- ) */
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530 register char *DstPtr = ((char *) M_POP) + TOS; /* dst */
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531 CharPtr = ((char *) M_POP) + TOS;; /* src */
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532 for( Scratch=0; (uint32) Scratch < (uint32) TOS ; Scratch++ )
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534 *(--DstPtr) = *(--CharPtr);
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540 #ifndef PF_NO_SHELL
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546 case ID_COLON_P: /* ( $name xt -- ) */
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547 CreateDicEntry( TOS, (char *) M_POP, 0 );
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550 #endif /* !PF_NO_SHELL */
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554 const char *s1, *s2;
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556 s2 = (const char *) M_POP;
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558 s1 = (const char *) M_POP;
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559 TOS = ffCompare( s1, len1, s2, TOS );
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563 /* ( a b -- flag , Comparisons ) */
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564 case ID_COMP_EQUAL:
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565 TOS = ( TOS == M_POP ) ? FTRUE : FFALSE ;
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567 case ID_COMP_NOT_EQUAL:
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568 TOS = ( TOS != M_POP ) ? FTRUE : FFALSE ;
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570 case ID_COMP_GREATERTHAN:
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571 TOS = ( M_POP > TOS ) ? FTRUE : FFALSE ;
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573 case ID_COMP_LESSTHAN:
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574 TOS = ( M_POP < TOS ) ? FTRUE : FFALSE ;
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576 case ID_COMP_U_GREATERTHAN:
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577 TOS = ( ((uint32)M_POP) > ((uint32)TOS) ) ? FTRUE : FFALSE ;
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579 case ID_COMP_U_LESSTHAN:
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580 TOS = ( ((uint32)M_POP) < ((uint32)TOS) ) ? FTRUE : FFALSE ;
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582 case ID_COMP_ZERO_EQUAL:
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583 TOS = ( TOS == 0 ) ? FTRUE : FFALSE ;
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585 case ID_COMP_ZERO_NOT_EQUAL:
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586 TOS = ( TOS != 0 ) ? FTRUE : FALSE ;
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588 case ID_COMP_ZERO_GREATERTHAN:
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589 TOS = ( TOS > 0 ) ? FTRUE : FFALSE ;
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591 case ID_COMP_ZERO_LESSTHAN:
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592 TOS = ( TOS < 0 ) ? FTRUE : FFALSE ;
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599 #ifndef PF_NO_SHELL
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605 #endif /* !PF_NO_SHELL */
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609 /* Put address of body on stack. Insptr points after code start. */
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610 TOS = (cell) ((char *)InsPtr - sizeof(cell) + CREATE_BODY_OFFSET );
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613 case ID_CSTORE: /* ( c caddr -- ) */
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614 *((uint8 *) TOS) = (uint8) M_POP;
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618 /* Double precision add. */
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619 case ID_D_PLUS: /* D+ ( al ah bl bh -- sl sh ) */
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621 register ucell ah,al,bl,sh,sl;
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628 if( sl < bl ) sh = 1; /* Carry */
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636 /* Double precision subtract. */
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637 case ID_D_MINUS: /* D- ( al ah bl bh -- sl sh ) */
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639 register ucell ah,al,bl,sh,sl;
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646 if( al < bl ) sh = 1; /* Borrow */
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654 /* Perform 32*32 bit multiply for 64 bit result, by factoring into 16 bit quantities. */
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655 /* Using an improved algorithm suggested by Steve Green. */
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656 case ID_D_UMTIMES: /* M* ( a b -- pl ph ) */
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658 ucell ahi, alo, bhi, blo, temp;
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660 /* Get values from stack. */
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663 /* Break into hi and lo 16 bit parts. */
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664 alo = ahi & 0xFFFF;
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666 blo = bhi & 0xFFFF;
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671 ph = pl >> 16; /* shift 64 bit value by 16 */
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676 if( pl < temp ) ph += 1; /* Carry */
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680 if( pl < temp ) ph += 1; /* Carry */
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681 ph = (ph << 16) | (pl >> 16); /* shift 64 bit value by 16 */
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686 if( pl < temp ) ph += 1; /* Carry */
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693 /* Perform 32*32 bit multiply for 64 bit result, using shift and add. */
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694 case ID_D_MTIMES: /* M* ( a b -- pl ph ) */
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697 ucell ap,bp, ahi, alo, bhi, blo, temp;
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699 /* Get values from stack. */
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702 ap = (a < 0) ? -a : a ; /* Positive A */
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703 bp = (b < 0) ? -b : b ; /* Positive B */
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704 /* Break into hi and lo 16 bit parts. */
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712 ph = pl >> 16; /* shift 64 bit value by 16 */
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717 if( pl < temp ) ph += 1; /* Carry */
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721 if( pl < temp ) ph += 1; /* Carry */
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722 ph = (ph << 16) | (pl >> 16); /* shift 64 bit value by 16 */
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727 if( pl < temp ) ph += 1; /* Carry */
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729 /* Negate product if one operand negative. */
\r
730 if( ((a ^ b) & 0x80000000) )
\r
733 if( pl & 0x80000000 )
\r
735 ph = -1 - ph; /* Borrow */
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748 #define DULT(du1l,du1h,du2l,du2h) ( (du2h<du1h) ? FALSE : ( (du2h==du1h) ? (du1l<du2l) : TRUE) )
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749 /* Perform 64/32 bit divide for 32 bit result, using shift and subtract. */
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750 case ID_D_UMSMOD: /* UM/MOD ( al ah bdiv -- rem q ) */
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752 ucell ah,al, q,di, bl,bh, sl,sh;
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758 for( di=0; di<32; di++ )
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760 if( !DULT(al,ah,bl,bh) )
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764 if( al < bl ) sh = 1; /* Borrow */
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771 bl = (bl >> 1) | (bh << 31);
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774 if( !DULT(al,ah,bl,bh) )
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780 M_PUSH( al ); /* rem */
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785 /* Perform 64/32 bit divide for 64 bit result, using shift and subtract. */
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786 case ID_D_MUSMOD: /* MU/MOD ( al am bdiv -- rem ql qh ) */
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788 register ucell ah,am,al,ql,qh,di;
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789 #define bdiv ((ucell)TOS)
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794 for( di=0; di<64; di++ )
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801 qh = (qh << 1) | (ql >> 31);
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803 ah = (ah << 1) | (am >> 31);
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804 am = (am << 1) | (al >> 31);
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806 DBUG(("XX ah,m,l = 0x%8x,%8x,%8x - qh,l = 0x%8x,%8x\n", ah,am,al, qh,ql ));
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813 M_PUSH( ah ); /* rem */
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820 #ifndef PF_NO_SHELL
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824 #endif /* !PF_NO_SHELL */
\r
831 TOS = gCurrentTask->td_StackBase - STKPTR;
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834 case ID_DIVIDE: BINARY_OP( / ); endcase;
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845 case ID_DROP: M_DROP; endcase;
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849 DumpMemory( (char *) Scratch, TOS );
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853 case ID_DUP: M_DUP; endcase;
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855 case ID_DO_P: /* ( limit start -- ) ( R: -- start limit ) */
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861 case ID_EOL: /* ( -- end_of_line_char ) */
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866 case ID_ERRORQ_P: /* ( flag num -- , quit if flag true ) */
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880 EMIT( (char) TOS );
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885 /* Save IP on return stack like a JSR. */
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886 M_R_PUSH( InsPtr );
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887 #ifdef PF_SUPPORT_TRACE
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888 /* Bump level for trace. */
\r
891 if( IsTokenPrimitive( TOS ) )
\r
893 WRITE_LONG_DIC( (cell *) &FakeSecondary[0], TOS); /* Build a fake secondary and execute it. */
\r
894 InsPtr = &FakeSecondary[0];
\r
898 InsPtr = (cell *) LOCAL_CODEREL_TO_ABS(TOS);
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904 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))
\r
905 if( IN_DICS( TOS ) )
\r
907 TOS = (cell) READ_LONG_DIC((cell *)TOS);
\r
911 TOS = *((cell *)TOS);
\r
914 TOS = *((cell *)TOS);
\r
918 case ID_FILE_CREATE: /* ( c-addr u fam -- fid ior ) */
\r
919 /* Build NUL terminated name string. */
\r
920 Scratch = M_POP; /* u */
\r
921 Temp = M_POP; /* caddr */
\r
922 if( Scratch < TIB_SIZE-2 )
\r
924 const char *famText = pfSelectFileModeCreate( TOS );
\r
925 pfCopyMemory( gScratch, (char *) Temp, (uint32) Scratch );
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926 gScratch[Scratch] = '\0';
\r
927 DBUG(("Create file = %s with famTxt %s\n", gScratch, famText ));
\r
928 FileID = sdOpenFile( gScratch, famText );
\r
929 TOS = ( FileID == NULL ) ? -1 : 0 ;
\r
930 M_PUSH( (cell) FileID );
\r
934 ERR("Filename too large for name buffer.\n");
\r
940 case ID_FILE_OPEN: /* ( c-addr u fam -- fid ior ) */
\r
941 /* Build NUL terminated name string. */
\r
942 Scratch = M_POP; /* u */
\r
943 Temp = M_POP; /* caddr */
\r
944 if( Scratch < TIB_SIZE-2 )
\r
946 const char *famText = pfSelectFileModeOpen( TOS );
\r
947 pfCopyMemory( gScratch, (char *) Temp, (uint32) Scratch );
\r
948 gScratch[Scratch] = '\0';
\r
949 DBUG(("Open file = %s\n", gScratch ));
\r
950 FileID = sdOpenFile( gScratch, famText );
\r
952 TOS = ( FileID == NULL ) ? -1 : 0 ;
\r
953 M_PUSH( (cell) FileID );
\r
957 ERR("Filename too large for name buffer.\n");
\r
963 case ID_FILE_CLOSE: /* ( fid -- ior ) */
\r
964 TOS = sdCloseFile( (FileStream *) TOS );
\r
967 case ID_FILE_READ: /* ( addr len fid -- u2 ior ) */
\r
968 FileID = (FileStream *) TOS;
\r
970 CharPtr = (char *) M_POP;
\r
971 Temp = sdReadFile( CharPtr, 1, Scratch, FileID );
\r
976 case ID_FILE_SIZE: /* ( fid -- ud ior ) */
\r
977 /* Determine file size by seeking to end and returning position. */
\r
978 FileID = (FileStream *) TOS;
\r
979 Scratch = sdTellFile( FileID );
\r
980 sdSeekFile( FileID, 0, PF_SEEK_END );
\r
981 M_PUSH( sdTellFile( FileID ));
\r
982 sdSeekFile( FileID, Scratch, PF_SEEK_SET );
\r
983 TOS = (Scratch < 0) ? -4 : 0 ; /* !!! err num */
\r
986 case ID_FILE_WRITE: /* ( addr len fid -- ior ) */
\r
987 FileID = (FileStream *) TOS;
\r
989 CharPtr = (char *) M_POP;
\r
990 Temp = sdWriteFile( CharPtr, 1, Scratch, FileID );
\r
991 TOS = (Temp != Scratch) ? -3 : 0;
\r
994 case ID_FILE_REPOSITION: /* ( pos fid -- ior ) */
\r
995 FileID = (FileStream *) TOS;
\r
997 TOS = sdSeekFile( FileID, Scratch, PF_SEEK_SET );
\r
1000 case ID_FILE_POSITION: /* ( pos fid -- ior ) */
\r
1001 M_PUSH( sdTellFile( (FileStream *) TOS ));
\r
1005 case ID_FILE_RO: /* ( -- fam ) */
\r
1007 TOS = PF_FAM_READ_ONLY;
\r
1010 case ID_FILE_RW: /* ( -- fam ) */
\r
1012 TOS = PF_FAM_READ_WRITE;
\r
1015 case ID_FILE_WO: /* ( -- fam ) */
\r
1017 TOS = PF_FAM_WRITE_ONLY;
\r
1020 case ID_FILE_BIN: /* ( -- fam ) */
\r
1021 TOS = TOS | PF_FAM_BINARY_FLAG;
\r
1024 case ID_FILL: /* ( caddr num charval -- ) */
\r
1026 register char *DstPtr;
\r
1027 Temp = M_POP; /* num */
\r
1028 DstPtr = (char *) M_POP; /* dst */
\r
1029 for( Scratch=0; (uint32) Scratch < (uint32) Temp ; Scratch++ )
\r
1031 *DstPtr++ = (char) TOS;
\r
1037 #ifndef PF_NO_SHELL
\r
1038 case ID_FIND: /* ( $addr -- $addr 0 | xt +-1 ) */
\r
1039 TOS = ffFind( (char *) TOS, (ExecToken *) &Temp );
\r
1044 TOS = ffFindNFA( (const ForthString *) TOS, (const ForthString **) &Temp );
\r
1045 M_PUSH( (cell) Temp );
\r
1047 #endif /* !PF_NO_SHELL */
\r
1049 case ID_FLUSHEMIT:
\r
1050 sdTerminalFlush();
\r
1053 /* Validate memory before freeing. Clobber validator and first word. */
\r
1054 case ID_FREE: /* ( addr -- result ) */
\r
1057 ERR("FREE passed NULL!\n");
\r
1058 TOS = -2; /* FIXME error code */
\r
1062 CellPtr = (cell *) TOS;
\r
1064 if( ((uint32)*CellPtr) != ((uint32)CellPtr ^ PF_MEMORY_VALIDATOR))
\r
1066 TOS = -2; /* FIXME error code */
\r
1070 CellPtr[0] = 0xDeadBeef;
\r
1071 pfFreeMem((char *)CellPtr);
\r
1077 #include "pfinnrfp.h"
\r
1081 TOS = (cell)CODE_HERE;
\r
1084 case ID_NUMBERQ_P: /* ( addr -- 0 | n 1 ) */
\r
1085 /* Convert using number converter in 'C'.
\r
1086 ** Only supports single precision for bootstrap.
\r
1088 TOS = (cell) ffNumberQ( (char *) TOS, &Temp );
\r
1089 if( TOS == NUM_TYPE_SINGLE)
\r
1091 M_PUSH( Temp ); /* Push single number */
\r
1095 case ID_I: /* ( -- i , DO LOOP index ) */
\r
1097 TOS = M_R_PICK(1);
\r
1100 #ifndef PF_NO_SHELL
\r
1101 case ID_INCLUDE_FILE:
\r
1102 FileID = (FileStream *) TOS;
\r
1103 M_DROP; /* Drop now so that INCLUDE has a clean stack. */
\r
1105 Scratch = ffIncludeFile( FileID );
\r
1107 if( Scratch ) M_THROW(Scratch)
\r
1109 #endif /* !PF_NO_SHELL */
\r
1111 #ifndef PF_NO_SHELL
\r
1112 case ID_INTERPRET:
\r
1114 Scratch = ffInterpret();
\r
1116 if( Scratch ) M_THROW(Scratch)
\r
1118 #endif /* !PF_NO_SHELL */
\r
1120 case ID_J: /* ( -- j , second DO LOOP index ) */
\r
1122 TOS = M_R_PICK(3);
\r
1130 #ifndef PF_NO_SHELL
\r
1135 #endif /* !PF_NO_SHELL */
\r
1137 case ID_LITERAL_P:
\r
1138 DBUG(("ID_LITERAL_P: InsPtr = 0x%x, *InsPtr = 0x%x\n", InsPtr, *InsPtr ));
\r
1140 TOS = READ_LONG_DIC(InsPtr++);
\r
1143 #ifndef PF_NO_SHELL
\r
1144 case ID_LOCAL_COMPILER: DO_VAR(gLocalCompiler_XT); endcase;
\r
1145 #endif /* !PF_NO_SHELL */
\r
1147 case ID_LOCAL_FETCH: /* ( i <local> -- n , fetch from local ) */
\r
1148 TOS = *(LocalsPtr - TOS);
\r
1151 #define LOCAL_FETCH_N(num) \
\r
1152 case ID_LOCAL_FETCH_##num: /* ( <local> -- n , fetch from local ) */ \
\r
1154 TOS = *(LocalsPtr -(num)); \
\r
1166 case ID_LOCAL_STORE: /* ( n i <local> -- , store n in local ) */
\r
1167 *(LocalsPtr - TOS) = M_POP;
\r
1171 #define LOCAL_STORE_N(num) \
\r
1172 case ID_LOCAL_STORE_##num: /* ( n <local> -- , store n in local ) */ \
\r
1173 *(LocalsPtr - (num)) = TOS; \
\r
1186 case ID_LOCAL_PLUSSTORE: /* ( n i <local> -- , add n to local ) */
\r
1187 *(LocalsPtr - TOS) += M_POP;
\r
1191 case ID_LOCAL_ENTRY: /* ( x0 x1 ... xn n -- ) */
\r
1192 /* create local stack frame */
\r
1196 DBUG(("LocalEntry: n = %d\n", TOS));
\r
1197 /* End of locals. Create stack frame */
\r
1198 DBUG(("LocalEntry: before RP@ = 0x%x, LP = 0x%x\n",
\r
1199 TORPTR, LocalsPtr));
\r
1200 M_R_PUSH(LocalsPtr);
\r
1201 LocalsPtr = TORPTR;
\r
1203 DBUG(("LocalEntry: after RP@ = 0x%x, LP = 0x%x\n",
\r
1204 TORPTR, LocalsPtr));
\r
1208 *lp++ = M_POP; /* Load local vars from stack */
\r
1214 case ID_LOCAL_EXIT: /* cleanup up local stack frame */
\r
1215 DBUG(("LocalExit: before RP@ = 0x%x, LP = 0x%x\n",
\r
1216 TORPTR, LocalsPtr));
\r
1217 TORPTR = LocalsPtr;
\r
1218 LocalsPtr = (cell *) M_R_POP;
\r
1219 DBUG(("LocalExit: after RP@ = 0x%x, LP = 0x%x\n",
\r
1220 TORPTR, LocalsPtr));
\r
1223 #ifndef PF_NO_SHELL
\r
1225 MSG("Load "); MSG(SYSTEM_LOAD_FILE); EMIT_CR;
\r
1226 FileID = sdOpenFile(SYSTEM_LOAD_FILE, "r");
\r
1230 Scratch = ffIncludeFile( FileID );
\r
1232 sdCloseFile( FileID );
\r
1233 if( Scratch ) M_THROW(Scratch);
\r
1237 ERR(SYSTEM_LOAD_FILE); ERR(" could not be opened!\n");
\r
1240 #endif /* !PF_NO_SHELL */
\r
1242 case ID_LEAVE_P: /* ( R: index limit -- ) */
\r
1248 case ID_LOOP_P: /* ( R: index limit -- | index limit ) */
\r
1249 Temp = M_R_POP; /* limit */
\r
1250 Scratch = M_R_POP + 1; /* index */
\r
1251 if( Scratch == Temp )
\r
1253 InsPtr++; /* skip branch offset, exit loop */
\r
1257 /* Push index and limit back to R */
\r
1258 M_R_PUSH( Scratch );
\r
1260 /* Branch back to just after (DO) */
\r
1265 case ID_LSHIFT: BINARY_OP( << ); endcase;
\r
1269 TOS = ( TOS > Scratch ) ? TOS : Scratch ;
\r
1274 TOS = ( TOS < Scratch ) ? TOS : Scratch ;
\r
1277 case ID_MINUS: BINARY_OP( - ); endcase;
\r
1279 #ifndef PF_NO_SHELL
\r
1280 case ID_NAME_TO_TOKEN:
\r
1281 TOS = (cell) NameToToken((ForthString *)TOS);
\r
1284 case ID_NAME_TO_PREVIOUS:
\r
1285 TOS = (cell) NameToPrevious((ForthString *)TOS);
\r
1292 case ID_OR: BINARY_OP( | ); endcase;
\r
1299 case ID_PICK: /* ( ... n -- sp(n) ) */
\r
1300 TOS = M_STACK(TOS);
\r
1303 case ID_PLUS: BINARY_OP( + ); endcase;
\r
1305 case ID_PLUS_STORE: /* ( n addr -- , add n to *addr ) */
\r
1306 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))
\r
1307 if( IN_DICS( TOS ) )
\r
1309 Scratch = READ_LONG_DIC((cell *)TOS);
\r
1311 WRITE_LONG_DIC((cell *)TOS,Scratch);
\r
1315 *((cell *)TOS) += M_POP;
\r
1318 *((cell *)TOS) += M_POP;
\r
1323 case ID_PLUSLOOP_P: /* ( delta -- ) ( R: index limit -- | index limit ) */
\r
1325 ucell OldIndex, NewIndex, Limit;
\r
1328 OldIndex = M_R_POP;
\r
1329 NewIndex = OldIndex + TOS; /* add TOS to index, not 1 */
\r
1330 /* Do indices cross boundary between LIMIT-1 and LIMIT ? */
\r
1331 if( ( (OldIndex - Limit) & ((Limit-1) - NewIndex) & 0x80000000 ) ||
\r
1332 ( (NewIndex - Limit) & ((Limit-1) - OldIndex) & 0x80000000 ) )
\r
1334 InsPtr++; /* skip branch offset, exit loop */
\r
1338 /* Push index and limit back to R */
\r
1339 M_R_PUSH( NewIndex );
\r
1340 M_R_PUSH( Limit );
\r
1341 /* Branch back to just after (DO) */
\r
1348 case ID_QDO_P: /* (?DO) ( limit start -- ) ( R: -- start limit ) */
\r
1349 Scratch = M_POP; /* limit */
\r
1350 if( Scratch == TOS )
\r
1352 /* Branch to just after (LOOP) */
\r
1358 M_R_PUSH( Scratch );
\r
1359 InsPtr++; /* skip branch offset, enter loop */
\r
1364 case ID_QDUP: if( TOS ) M_DUP; endcase;
\r
1366 case ID_QTERMINAL: /* WARNING: Typically not fully implemented! */
\r
1368 TOS = sdQueryTerminal();
\r
1371 case ID_QUIT_P: /* Stop inner interpreter, go back to user. */
\r
1372 #ifdef PF_SUPPORT_TRACE
\r
1375 M_THROW(THROW_QUIT);
\r
1384 TOS = (*(TORPTR));
\r
1394 TOS = (ffRefill() > 0) ? FTRUE : FFALSE;
\r
1397 /* Resize memory allocated by ALLOCATE. */
\r
1398 case ID_RESIZE: /* ( addr1 u -- addr2 result ) */
\r
1400 cell *Addr1 = (cell *) M_POP;
\r
1401 // Point to validator below users address.
\r
1402 cell *FreePtr = Addr1 - 1;
\r
1403 if( ((uint32)*FreePtr) != ((uint32)FreePtr ^ PF_MEMORY_VALIDATOR))
\r
1405 // 090218 - Fixed bug, was returning zero.
\r
1411 /* Try to allocate. */
\r
1412 CellPtr = (cell *) pfAllocMem( TOS + sizeof(cell) );
\r
1415 /* Copy memory including validation. */
\r
1416 pfCopyMemory( (char *) CellPtr, (char *) FreePtr, TOS + sizeof(cell) );
\r
1417 *CellPtr = (cell)(((uint32)CellPtr) ^ (uint32)PF_MEMORY_VALIDATOR);
\r
1418 // 090218 - Fixed bug that was incrementing the address twice. Thanks Reinhold Straub.
\r
1419 // Increment past validator to user address.
\r
1420 M_PUSH( (cell) (CellPtr + 1) );
\r
1421 TOS = 0; // Result code.
\r
1422 // Mark old cell as dead so we can't free it twice.
\r
1423 FreePtr[0] = 0xDeadBeef;
\r
1424 pfFreeMem((char *) FreePtr);
\r
1428 // 090218 - Fixed bug, was returning zero.
\r
1430 TOS = -4; /* FIXME Fix error code. */
\r
1437 ** RP@ and RP! are called secondaries so we must
\r
1438 ** account for the return address pushed before calling.
\r
1440 case ID_RP_FETCH: /* ( -- rp , address of top of return stack ) */
\r
1442 TOS = (cell)TORPTR; /* value before calling RP@ */
\r
1445 case ID_RP_STORE: /* ( rp -- , address of top of return stack ) */
\r
1446 TORPTR = (cell *) TOS;
\r
1450 case ID_ROLL: /* ( xu xu-1 xu-1 ... x0 u -- xu-1 xu-1 ... x0 xu ) */
\r
1453 cell *srcPtr, *dstPtr;
\r
1454 Scratch = M_STACK(TOS);
\r
1455 srcPtr = &M_STACK(TOS-1);
\r
1456 dstPtr = &M_STACK(TOS);
\r
1457 for( ri=0; ri<TOS; ri++ )
\r
1459 *dstPtr-- = *srcPtr--;
\r
1466 case ID_ROT: /* ( a b c -- b c a ) */
\r
1467 Scratch = M_POP; /* b */
\r
1468 Temp = M_POP; /* a */
\r
1469 M_PUSH( Scratch ); /* b */
\r
1471 TOS = Temp; /* a */
\r
1474 /* Logical right shift */
\r
1475 case ID_RSHIFT: { TOS = ((uint32)M_POP) >> TOS; } endcase;
\r
1477 #ifndef PF_NO_SHELL
\r
1478 case ID_SAVE_FORTH_P: /* ( $name Entry NameSize CodeSize -- err ) */
\r
1480 int32 NameSize, CodeSize, EntryPoint;
\r
1483 EntryPoint = M_POP;
\r
1484 ForthStringToC( gScratch, (char *) M_POP );
\r
1485 TOS = ffSaveForth( gScratch, EntryPoint, NameSize, CodeSize );
\r
1491 ** EVALUATE >IN SourceID=(-1) 1111
\r
1492 ** keyboard >IN SourceID=(0) 2222
\r
1493 ** file >IN lineNumber filePos SourceID=(fileID)
\r
1495 case ID_SAVE_INPUT: /* FIXME - finish */
\r
1500 case ID_SP_FETCH: /* ( -- sp , address of top of stack, sorta ) */
\r
1502 TOS = (cell)STKPTR;
\r
1505 case ID_SP_STORE: /* ( sp -- , address of top of stack, sorta ) */
\r
1506 STKPTR = (cell *) TOS;
\r
1510 case ID_STORE: /* ( n addr -- , write n to addr ) */
\r
1511 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))
\r
1512 if( IN_DICS( TOS ) )
\r
1514 WRITE_LONG_DIC((cell *)TOS,M_POP);
\r
1518 *((cell *)TOS) = M_POP;
\r
1521 *((cell *)TOS) = M_POP;
\r
1526 case ID_SCAN: /* ( addr cnt char -- addr' cnt' ) */
\r
1527 Scratch = M_POP; /* cnt */
\r
1528 Temp = M_POP; /* addr */
\r
1529 TOS = ffScan( (char *) Temp, Scratch, (char) TOS, &CharPtr );
\r
1530 M_PUSH((cell) CharPtr);
\r
1533 #ifndef PF_NO_SHELL
\r
1534 case ID_SEMICOLON:
\r
1536 Scratch = ffSemiColon();
\r
1538 if( Scratch ) M_THROW( Scratch );
\r
1540 #endif /* !PF_NO_SHELL */
\r
1542 case ID_SKIP: /* ( addr cnt char -- addr' cnt' ) */
\r
1543 Scratch = M_POP; /* cnt */
\r
1544 Temp = M_POP; /* addr */
\r
1545 TOS = ffSkip( (char *) Temp, Scratch, (char) TOS, &CharPtr );
\r
1546 M_PUSH((cell) CharPtr);
\r
1549 case ID_SOURCE: /* ( -- c-addr num ) */
\r
1551 M_PUSH( (cell) gCurrentTask->td_SourcePtr );
\r
1552 TOS = (cell) gCurrentTask->td_SourceNum;
\r
1555 case ID_SOURCE_SET: /* ( c-addr num -- ) */
\r
1556 gCurrentTask->td_SourcePtr = (char *) M_POP;
\r
1557 gCurrentTask->td_SourceNum = TOS;
\r
1561 case ID_SOURCE_ID:
\r
1563 TOS = ffConvertStreamToSourceID( gCurrentTask->td_InputStream ) ;
\r
1566 case ID_SOURCE_ID_POP:
\r
1568 TOS = ffConvertStreamToSourceID( ffPopInputStream() ) ;
\r
1571 case ID_SOURCE_ID_PUSH: /* ( source-id -- ) */
\r
1572 TOS = (cell)ffConvertSourceIDToStream( TOS );
\r
1573 Scratch = ffPushInputStream((FileStream *) TOS );
\r
1584 *STKPTR = Scratch;
\r
1597 case ID_THROW: /* ( k*x err -- k*x | i*x err , jump to where CATCH was called ) */
\r
1605 #ifndef PF_NO_SHELL
\r
1608 CharPtr = (char *) ffWord( (char) ' ' );
\r
1609 TOS = ffFind( CharPtr, (ExecToken *) &Temp );
\r
1612 ERR("' could not find ");
\r
1613 ioType( (char *) CharPtr+1, *CharPtr );
\r
1621 #endif /* !PF_NO_SHELL */
\r
1623 case ID_TIMES: BINARY_OP( * ); endcase;
\r
1626 Scratch = M_POP; /* addr */
\r
1627 ioType( (char *) Scratch, TOS );
\r
1636 case ID_VAR_BASE: DO_VAR(gVarBase); endcase;
\r
1637 case ID_VAR_CODE_BASE: DO_VAR(gCurrentDictionary->dic_CodeBase); endcase;
\r
1638 case ID_VAR_CODE_LIMIT: DO_VAR(gCurrentDictionary->dic_CodeLimit); endcase;
\r
1639 case ID_VAR_CONTEXT: DO_VAR(gVarContext); endcase;
\r
1640 case ID_VAR_DP: DO_VAR(gCurrentDictionary->dic_CodePtr.Cell); endcase;
\r
1641 case ID_VAR_ECHO: DO_VAR(gVarEcho); endcase;
\r
1642 case ID_VAR_HEADERS_BASE: DO_VAR(gCurrentDictionary->dic_HeaderBase); endcase;
\r
1643 case ID_VAR_HEADERS_LIMIT: DO_VAR(gCurrentDictionary->dic_HeaderLimit); endcase;
\r
1644 case ID_VAR_HEADERS_PTR: DO_VAR(gCurrentDictionary->dic_HeaderPtr.Cell); endcase;
\r
1645 case ID_VAR_NUM_TIB: DO_VAR(gCurrentTask->td_SourceNum); endcase;
\r
1646 case ID_VAR_OUT: DO_VAR(gCurrentTask->td_OUT); endcase;
\r
1647 case ID_VAR_STATE: DO_VAR(gVarState); endcase;
\r
1648 case ID_VAR_TO_IN: DO_VAR(gCurrentTask->td_IN); endcase;
\r
1649 case ID_VAR_TRACE_FLAGS: DO_VAR(gVarTraceFlags); endcase;
\r
1650 case ID_VAR_TRACE_LEVEL: DO_VAR(gVarTraceLevel); endcase;
\r
1651 case ID_VAR_TRACE_STACK: DO_VAR(gVarTraceStack); endcase;
\r
1652 case ID_VAR_RETURN_CODE: DO_VAR(gVarReturnCode); endcase;
\r
1655 TOS = (cell) ffWord( (char) TOS );
\r
1658 case ID_WORD_FETCH: /* ( waddr -- w ) */
\r
1659 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))
\r
1660 if( IN_DICS( TOS ) )
\r
1662 TOS = (uint16) READ_SHORT_DIC((uint16 *)TOS);
\r
1666 TOS = *((uint16 *)TOS);
\r
1669 TOS = *((uint16 *)TOS);
\r
1673 case ID_WORD_STORE: /* ( w waddr -- ) */
\r
1675 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))
\r
1676 if( IN_DICS( TOS ) )
\r
1678 WRITE_SHORT_DIC((uint16 *)TOS,(uint16)M_POP);
\r
1682 *((uint16 *)TOS) = (uint16) M_POP;
\r
1685 *((uint16 *)TOS) = (uint16) M_POP;
\r
1690 case ID_XOR: BINARY_OP( ^ ); endcase;
\r
1693 /* Branch is followed by an offset relative to address of offset. */
\r
1694 case ID_ZERO_BRANCH:
\r
1695 DBUGX(("Before 0Branch: IP = 0x%x\n", InsPtr ));
\r
1702 InsPtr++; /* skip over offset */
\r
1705 DBUGX(("After 0Branch: IP = 0x%x\n", InsPtr ));
\r
1709 ERR("pfCatch: Unrecognised token = 0x");
\r
1712 ffDotHex((int32) InsPtr);
\r
1718 if(InsPtr) Token = READ_LONG_DIC(InsPtr++); /* Traverse to next token in secondary. */
\r
1725 if( _CrtCheckMemory() == 0 )
\r
1727 ERR("_CrtCheckMemory abort: InsPtr = 0x");
\r
1728 ffDotHex((int)InsPtr);
\r
1733 } while( (InitialReturnStack - TORPTR) > 0 );
\r
1737 return ExceptionReturnCode;
\r