| 1 | /* @(#) pfcustom.c 98/01/26 1.3 */ |
| 2 | |
| 3 | #ifndef PF_USER_CUSTOM |
| 4 | |
| 5 | /*************************************************************** |
| 6 | ** Call Custom Functions for pForth |
| 7 | ** |
| 8 | ** Create a file similar to this and compile it into pForth |
| 9 | ** by setting -DPF_USER_CUSTOM="mycustom.c" |
| 10 | ** |
| 11 | ** Using this, you could, for example, call X11 from Forth. |
| 12 | ** See "pf_cglue.c" for more information. |
| 13 | ** |
| 14 | ** Author: Phil Burk |
| 15 | ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom |
| 16 | ** |
| 17 | ** The pForth software code is dedicated to the public domain, |
| 18 | ** and any third party may reproduce, distribute and modify |
| 19 | ** the pForth software code or any derivative works thereof |
| 20 | ** without any compensation or license. The pForth software |
| 21 | ** code is provided on an "as is" basis without any warranty |
| 22 | ** of any kind, including, without limitation, the implied |
| 23 | ** warranties of merchantability and fitness for a particular |
| 24 | ** purpose and their equivalents under the laws of any jurisdiction. |
| 25 | ** |
| 26 | ***************************************************************/ |
| 27 | |
| 28 | |
| 29 | #include "pf_all.h" |
| 30 | |
| 31 | static cell_t CTest0( cell_t Val ); |
| 32 | static void CTest1( cell_t Val1, cell_t Val2 ); |
| 33 | |
| 34 | /**************************************************************** |
| 35 | ** Step 1: Put your own special glue routines here |
| 36 | ** or link them in from another file or library. |
| 37 | ****************************************************************/ |
| 38 | static cell_t CTest0( cell_t Val ) |
| 39 | { |
| 40 | MSG_NUM_D("CTest0: Val = ", Val); |
| 41 | return Val+1; |
| 42 | } |
| 43 | |
| 44 | static void CTest1( cell_t Val1, cell_t Val2 ) |
| 45 | { |
| 46 | |
| 47 | MSG("CTest1: Val1 = "); ffDot(Val1); |
| 48 | MSG_NUM_D(", Val2 = ", Val2); |
| 49 | } |
| 50 | |
| 51 | /**************************************************************** |
| 52 | ** Step 2: Create CustomFunctionTable. |
| 53 | ** Do not change the name of CustomFunctionTable! |
| 54 | ** It is used by the pForth kernel. |
| 55 | ****************************************************************/ |
| 56 | |
| 57 | #ifdef PF_NO_GLOBAL_INIT |
| 58 | /****************** |
| 59 | ** If your loader does not support global initialization, then you |
| 60 | ** must define PF_NO_GLOBAL_INIT and provide a function to fill |
| 61 | ** the table. Some embedded system loaders require this! |
| 62 | ** Do not change the name of LoadCustomFunctionTable()! |
| 63 | ** It is called by the pForth kernel. |
| 64 | */ |
| 65 | #define NUM_CUSTOM_FUNCTIONS (2) |
| 66 | CFunc0 CustomFunctionTable[NUM_CUSTOM_FUNCTIONS]; |
| 67 | |
| 68 | Err LoadCustomFunctionTable( void ) |
| 69 | { |
| 70 | CustomFunctionTable[0] = CTest0; |
| 71 | CustomFunctionTable[1] = CTest1; |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | #else |
| 76 | /****************** |
| 77 | ** If your loader supports global initialization (most do.) then just |
| 78 | ** create the table like this. |
| 79 | */ |
| 80 | CFunc0 CustomFunctionTable[] = |
| 81 | { |
| 82 | (CFunc0) CTest0, |
| 83 | (CFunc0) CTest1 |
| 84 | }; |
| 85 | #endif |
| 86 | |
| 87 | /**************************************************************** |
| 88 | ** Step 3: Add custom functions to the dictionary. |
| 89 | ** Do not change the name of CompileCustomFunctions! |
| 90 | ** It is called by the pForth kernel. |
| 91 | ****************************************************************/ |
| 92 | |
| 93 | #if (!defined(PF_NO_INIT)) && (!defined(PF_NO_SHELL)) |
| 94 | Err CompileCustomFunctions( void ) |
| 95 | { |
| 96 | Err err; |
| 97 | int i = 0; |
| 98 | /* Compile Forth words that call your custom functions. |
| 99 | ** Make sure order of functions matches that in LoadCustomFunctionTable(). |
| 100 | ** Parameters are: Name in UPPER CASE, Function, Index, Mode, NumParams |
| 101 | */ |
| 102 | err = CreateGlueToC( "CTEST0", i++, C_RETURNS_VALUE, 1 ); |
| 103 | if( err < 0 ) return err; |
| 104 | err = CreateGlueToC( "CTEST1", i++, C_RETURNS_VOID, 2 ); |
| 105 | if( err < 0 ) return err; |
| 106 | |
| 107 | return 0; |
| 108 | } |
| 109 | #else |
| 110 | Err CompileCustomFunctions( void ) { return 0; } |
| 111 | #endif |
| 112 | |
| 113 | /**************************************************************** |
| 114 | ** Step 4: Recompile using compiler option PF_USER_CUSTOM |
| 115 | ** and link with your code. |
| 116 | ** Then rebuild the Forth using "pforth -i system.fth" |
| 117 | ** Test: 10 Ctest0 ( should print message then '11' ) |
| 118 | ****************************************************************/ |
| 119 | |
| 120 | #endif /* PF_USER_CUSTOM */ |
| 121 | |