1 /*****************************************************************************/
5 /* Additional information about 6502 code */
9 /* (C) 2001 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@cc65.org */
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 /*****************************************************************************/
43 /*****************************************************************************/
51 /*****************************************************************************/
53 /*****************************************************************************/
57 /* Defines for registers. */
58 #define REG_NONE 0x00U
62 #define REG_SREG_LO 0x08U
63 #define REG_SREG_HI 0x10U
64 #define REG_TMP1 0x20U
65 #define REG_PTR1_LO 0x40U
66 #define REG_PTR1_HI 0x80U
67 #define REG_AX (REG_A | REG_X)
68 #define REG_XY (REG_X | REG_Y)
69 #define REG_AXY (REG_A | REG_X | REG_Y)
73 /*****************************************************************************/
75 /*****************************************************************************/
79 void GetFuncInfo (const char* Name, unsigned char* Use, unsigned char* Chg);
80 /* For the given function, lookup register information and combine it with
81 * the information already in place. If the function is unknown, assume it
82 * will use all registers and load all registers.
85 unsigned char GetRegInfo (struct CodeSeg* S, unsigned Index);
86 /* Determine register usage information for the instructions starting at the
90 int RegAUsed (struct CodeSeg* S, unsigned Index);
91 /* Check if the value in A is used. */
93 int RegXUsed (struct CodeSeg* S, unsigned Index);
94 /* Check if the value in X is used. */
96 int RegYUsed (struct CodeSeg* S, unsigned Index);
97 /* Check if the value in Y is used. */
101 /* End of codeinfo.h */