git.sur5r.net Git - cc65/blob - src/ca65/asserts.c

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 asserts.c                                 */
   4 /*                                                                           */
   5 /*               Linker assertions for the ca65 crossassembler               */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2003      Ullrich von Bassewitz                                       */
  10 /*               Römerstraße 52                                              */
  11 /*               D-70794 Filderstadt                                         */
  12 /* EMail:        uz@cc65.org                                                 */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 /* common */
  37 #include "coll.h"
  38 #include "xmalloc.h"
  39
  40 /* ca65 */
  41 #include "asserts.h"
  42 #include "expr.h"
  43 #include "objfile.h"
  44 #include "scanner.h"
  45
  46
  47
  48 /*****************************************************************************/
  49 /*                                   Data                                    */
  50 /*****************************************************************************/
  51
  52
  53
  54 /* An assertion entry */
  55 typedef struct Assertion Assertion;
  56 struct Assertion {
  57     ExprNode*   Expr;           /* Expression to evaluate */
  58     unsigned    Action;         /* Action to take */
  59     unsigned    Msg;            /* Message to print (if any) */
  60     FilePos     Pos;            /* File position of assertion */
  61 };
  62
  63 /* Collection with all assertions for a module */
  64 static Collection Assertions = STATIC_COLLECTION_INITIALIZER;
  65
  66
  67
  68 /*****************************************************************************/
  69 /*                                   Code                                    */
  70 /*****************************************************************************/
  71
  72
  73
  74 static Assertion* NewAssertion (ExprNode* Expr, unsigned Action, unsigned Msg)
  75 /* Create a new Assertion struct and return it */
  76 {
  77     /* Allocate memory */
  78     Assertion* A = xmalloc (sizeof (Assertion));
  79
  80     /* Initialize the fields */
  81     A->Expr     = Expr;
  82     A->Action   = Action;
  83     A->Msg      = Msg;
  84     A->Pos      = CurPos;
  85
  86     /* Return the new struct */
  87     return A;
  88 }
  89
  90
  91
  92 void AddAssertion (ExprNode* Expr, unsigned Action, unsigned Msg)
  93 /* Add an assertion to the assertion table */
  94 {
  95     /* Add an assertion object to the table */
  96     CollAppend (&Assertions, NewAssertion (Expr, Action, Msg));
  97 }
  98
  99
 100
 101 void WriteAssertions (void)
 102 /* Write the assertion table to the object file */
 103 {
 104     unsigned I;
 105
 106     /* Get the number of strings in the string pool */
 107     unsigned Count = CollCount (&Assertions);
 108
 109     /* Tell the object file module that we're about to start the assertions */
 110     ObjStartAssertions ();
 111
 112     /* Write the string count to the list */
 113     ObjWriteVar (Count);
 114
 115     /* Write the assertions */
 116     for (I = 0; I < Count; ++I) {
 117
 118         /* Get the next assertion */
 119         Assertion* A = CollAtUnchecked (&Assertions, I);
 120
 121         /* Write it to the file */
 122         WriteExpr (A->Expr);
 123         ObjWriteVar (A->Action);
 124         ObjWriteVar (A->Msg);
 125         ObjWritePos (&A->Pos);
 126     }
 127
 128     /* Done writing the assertions */
 129     ObjEndAssertions ();
 130 }
 131
 132
 133
 134