1 /*****************************************************************************/
5 /* Objectcode management for the ca65 macroassembler */
9 /* (C) 1998-2000 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@musoftware.de */
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. */
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: */
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 */
32 /*****************************************************************************/
49 /*****************************************************************************/
51 /*****************************************************************************/
55 /* Are we in absolute mode or in relocatable mode? */
60 /*****************************************************************************/
61 /* Segment management */
62 /*****************************************************************************/
66 void UseCodeSeg (void);
67 /* Use the code segment */
69 void UseRODataSeg (void);
70 /* Use the r/o data segment */
72 void UseDataSeg (void);
73 /* Use the data segment */
75 void UseBssSeg (void);
76 /* Use the BSS segment */
78 void UseZeropageSeg (void);
79 /* Use the zero page segment */
81 void UseNullSeg (void);
82 /* Use the null segment */
84 void UseSeg (const char* Name, unsigned SegType);
85 /* Use the segment with the given name */
87 unsigned GetSegNum (void);
88 /* Get the number of the current segment */
90 void SegAlign (unsigned Power, int Val);
91 /* Align the PC segment to 2^Power. If Val is -1, emit fill fragments (the
92 * actual fill value will be determined by the linker), otherwise use the
97 /* Return true if the current segment is a zeropage segment */
100 /* Return true if the current segment is a far segment */
102 unsigned GetSegType (unsigned SegNum);
103 /* Return the type of the segment with the given number */
105 unsigned long GetPC (void);
106 /* Get the program counter of the current segment */
108 void SetAbsPC (unsigned long AbsPC);
109 /* Set the program counter in absolute mode */
111 void SegCheck (void);
112 /* Check the segments for range and other errors */
115 /* Dump the contents of all segments */
117 void WriteSegments (void);
118 /* Write the segment data to the object file */
122 /*****************************************************************************/
124 /*****************************************************************************/
128 void Emit0 (unsigned char OPC);
129 /* Emit an instruction with a zero sized operand */
131 void Emit1 (unsigned char OPC, ExprNode* Value);
132 /* Emit an instruction with an one byte argument */
134 void Emit2 (unsigned char OPC, ExprNode* Value);
135 /* Emit an instruction with a two byte argument */
137 void Emit3 (unsigned char OPC, ExprNode* Expr);
138 /* Emit an instruction with a three byte argument */
140 void Emit3b (unsigned char OPC, ExprNode* Expr, ExprNode* Bank);
141 /* Emit an instruction with a three byte argument and separate bank */
143 void EmitPCRel (unsigned char OPC, ExprNode* Expr, unsigned Size);
144 /* Emit an opcode with a PC relative argument of one or two bytes */
146 void EmitData (const unsigned char* Data, unsigned Size);
147 /* Emit data into the current segment */
149 void EmitByte (ExprNode* Expr);
152 void EmitWord (ExprNode* Expr);
155 void EmitFarAddr (ExprNode* Expr);
156 /* Emit a 24 bit expression */
158 void EmitDWord (ExprNode* Expr);
161 void EmitFill (unsigned long Count);
162 /* Emit Count fill bytes */
166 /* End of objcode.h */