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 /*****************************************************************************/
41 #include "../common/segdefs.h"
46 /*****************************************************************************/
48 /*****************************************************************************/
52 /* Are we in absolute mode or in relocatable mode? */
57 /*****************************************************************************/
58 /* Segment management */
59 /*****************************************************************************/
63 void UseCodeSeg (void);
64 /* Use the code segment */
66 void UseRODataSeg (void);
67 /* Use the r/o data segment */
69 void UseDataSeg (void);
70 /* Use the data segment */
72 void UseBssSeg (void);
73 /* Use the BSS segment */
75 void UseZeropageSeg (void);
76 /* Use the zero page segment */
78 void UseNullSeg (void);
79 /* Use the null segment */
81 void UseSeg (const char* Name, unsigned SegType);
82 /* Use the segment with the given name */
84 unsigned GetSegNum (void);
85 /* Get the number of the current segment */
87 void SegAlign (unsigned Power, int Val);
88 /* Align the PC segment to 2^Power. If Val is -1, emit fill fragments (the
89 * actual fill value will be determined by the linker), otherwise use the
94 /* Return true if the current segment is a zeropage segment */
97 /* Return true if the current segment is a far segment */
99 unsigned GetSegType (unsigned SegNum);
100 /* Return the type of the segment with the given number */
102 unsigned long GetPC (void);
103 /* Get the program counter of the current segment */
105 void SetAbsPC (unsigned long AbsPC);
106 /* Set the program counter in absolute mode */
108 void SegCheck (void);
109 /* Check the segments for range and other errors */
112 /* Dump the contents of all segments */
114 void WriteSegments (void);
115 /* Write the segment data to the object file */
119 /*****************************************************************************/
121 /*****************************************************************************/
125 void Emit0 (unsigned char OPC);
126 /* Emit an instruction with a zero sized operand */
128 void Emit1 (unsigned char OPC, ExprNode* Value);
129 /* Emit an instruction with an one byte argument */
131 void Emit2 (unsigned char OPC, ExprNode* Value);
132 /* Emit an instruction with a two byte argument */
134 void Emit3 (unsigned char OPC, ExprNode* Expr);
135 /* Emit an instruction with a three byte argument */
137 void Emit3b (unsigned char OPC, ExprNode* Expr, ExprNode* Bank);
138 /* Emit an instruction with a three byte argument and separate bank */
140 void EmitPCRel (unsigned char OPC, ExprNode* Expr, unsigned Size);
141 /* Emit an opcode with a PC relative argument of one or two bytes */
143 void EmitData (const unsigned char* Data, unsigned Size);
144 /* Emit data into the current segment */
146 void EmitByte (ExprNode* Expr);
149 void EmitWord (ExprNode* Expr);
152 void EmitFarAddr (ExprNode* Expr);
153 /* Emit a 24 bit expression */
155 void EmitDWord (ExprNode* Expr);
158 void EmitFill (unsigned long Count);
159 /* Emit Count fill bytes */
163 /* End of objcode.h */