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1 | /* @(#) pf_cglue.c 98/02/11 1.4 */\r |
2 | /***************************************************************\r |
3 | ** 'C' Glue support for Forth based on 'C'\r |
4 | **\r |
5 | ** Author: Phil Burk\r |
6 | ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom\r |
7 | **\r |
8 | ** The pForth software code is dedicated to the public domain,\r |
9 | ** and any third party may reproduce, distribute and modify\r |
10 | ** the pForth software code or any derivative works thereof\r |
11 | ** without any compensation or license. The pForth software\r |
12 | ** code is provided on an "as is" basis without any warranty\r |
13 | ** of any kind, including, without limitation, the implied\r |
14 | ** warranties of merchantability and fitness for a particular\r |
15 | ** purpose and their equivalents under the laws of any jurisdiction.\r |
16 | **\r |
17 | ***************************************************************/\r |
18 | \r |
19 | #include "pf_all.h"\r |
20 | \r |
21 | extern CFunc0 CustomFunctionTable[];\r |
22 | \r |
23 | /***************************************************************/\r |
24 | int32 CallUserFunction( int32 Index, int32 ReturnMode, int32 NumParams )\r |
25 | {\r |
26 | cell P1, P2, P3, P4, P5;\r |
27 | cell Result = 0;\r |
28 | CFunc0 CF;\r |
29 | \r |
30 | DBUG(("CallUserFunction: Index = %d, ReturnMode = %d, NumParams = %d\n",\r |
31 | Index, ReturnMode, NumParams ));\r |
32 | \r |
33 | CF = CustomFunctionTable[Index];\r |
34 | \r |
35 | switch( NumParams )\r |
36 | {\r |
37 | case 0:\r |
38 | Result = ((CFunc0) CF) ( );\r |
39 | break;\r |
40 | case 1:\r |
41 | P1 = POP_DATA_STACK;\r |
42 | Result = ((CFunc1) CF) ( P1 );\r |
43 | break;\r |
44 | case 2:\r |
45 | P2 = POP_DATA_STACK;\r |
46 | P1 = POP_DATA_STACK;\r |
47 | Result = ((CFunc2) CF) ( P1, P2 );\r |
48 | break;\r |
49 | case 3:\r |
50 | P3 = POP_DATA_STACK;\r |
51 | P2 = POP_DATA_STACK;\r |
52 | P1 = POP_DATA_STACK;\r |
53 | Result = ((CFunc3) CF) ( P1, P2, P3 );\r |
54 | break;\r |
55 | case 4:\r |
56 | P4 = POP_DATA_STACK;\r |
57 | P3 = POP_DATA_STACK;\r |
58 | P2 = POP_DATA_STACK;\r |
59 | P1 = POP_DATA_STACK;\r |
60 | Result = ((CFunc4) CF) ( P1, P2, P3, P4 );\r |
61 | break;\r |
62 | case 5:\r |
63 | P5 = POP_DATA_STACK;\r |
64 | P4 = POP_DATA_STACK;\r |
65 | P3 = POP_DATA_STACK;\r |
66 | P2 = POP_DATA_STACK;\r |
67 | P1 = POP_DATA_STACK;\r |
68 | Result = ((CFunc5) CF) ( P1, P2, P3, P4, P5 );\r |
69 | break;\r |
70 | default:\r |
71 | pfReportError("CallUserFunction", PF_ERR_NUM_PARAMS);\r |
72 | EXIT(1);\r |
73 | }\r |
74 | \r |
75 | /* Push result on Forth stack if requested. */\r |
76 | if(ReturnMode == C_RETURNS_VALUE) PUSH_DATA_STACK( Result );\r |
77 | \r |
78 | return Result;\r |
79 | }\r |
80 | \r |
81 | #if (!defined(PF_NO_INIT)) && (!defined(PF_NO_SHELL))\r |
82 | /***************************************************************/\r |
83 | Err CreateGlueToC( const char *CName, uint32 Index, int32 ReturnMode, int32 NumParams )\r |
84 | {\r |
85 | uint32 Packed;\r |
86 | char FName[40];\r |
87 | \r |
88 | CStringToForth( FName, CName );\r |
89 | Packed = (Index & 0xFFFF) | 0 | (NumParams << 24) |\r |
90 | (ReturnMode << 31);\r |
91 | DBUG(("Packed = 0x%8x\n", Packed));\r |
92 | \r |
93 | ffCreateSecondaryHeader( FName );\r |
94 | CODE_COMMA( ID_CALL_C );\r |
95 | CODE_COMMA(Packed);\r |
96 | ffFinishSecondary();\r |
97 | \r |
98 | return 0;\r |
99 | }\r |
100 | #endif\r |