Inline shifts in g_asl as is already the case in g_scale.

[cc65] / src / cc65 / codeinfo.h

diff --git a/src/cc65/codeinfo.h b/src/cc65/codeinfo.h
index 526fb53176985c02adb776ff2fcf14c7c2ebd7df..4e0b16887e603c4e9c75d4baca8281d0bea6b18b 100644 (file)
--- a/src/cc65/codeinfo.h
+++ b/src/cc65/codeinfo.h
@@ -6,7 +6,7 @@
 /*                                                                           */
 /*                                                                           */
 /*                                                                           */
-/* (C) 2001      Ullrich von Bassewitz                                       */
+/* (C) 2001-2002 Ullrich von Bassewitz                                       */
 /*               Wacholderweg 14                                             */
 /*               D-70597 Stuttgart                                           */
 /* EMail:        uz@cc65.org                                                 */
@@ -54,37 +54,72 @@ struct CodeSeg;
 
 
 
+/* Forward to struct RegContents */
+struct RegContents;
+
 /* Defines for registers. */
 #define REG_NONE               0x0000U
 #define REG_A                  0x0001U
 #define REG_X                  0x0002U
 #define REG_Y                  0x0004U
-#define REG_SREG_LO            0x0008U
-#define REG_SREG_HI            0x0010U
-#define REG_TMP1               0x0020U
-#define REG_TMP2        0x0040U
-#define REG_TMP3        0x0080U
-#define REG_PTR1_LO            0x0100U
-#define REG_PTR1_HI            0x0200U
-#define REG_PTR2_LO            0x0400U
-#define REG_PTR2_HI            0x0800U
-#define REG_PTR3_LO            0x1000U
-#define REG_PTR3_HI            0x2000U
-#define REG_PTR4_LO            0x4000U
-#define REG_PTR4_HI            0x8000U
-#define        REG_AX          (REG_A | REG_X)
+#define REG_TMP1               0x0008U
+#define REG_PTR1_LO            0x0010U
+#define REG_PTR1_HI            0x0020U
+#define REG_PTR2_LO     0x0040U
+#define REG_PTR2_HI     0x0080U
+#define REG_SREG_LO            0x0100U
+#define REG_SREG_HI     0x0200U
+#define REG_SAVE_LO     0x0400U
+#define REG_SAVE_HI     0x0800U
+#define REG_SP_LO       0x1000U
+#define REG_SP_HI       0x2000U
+
+
+/* Combined register defines */
+#define REG_PTR1        (REG_PTR1_LO | REG_PTR1_HI)
+#define REG_PTR2        (REG_PTR2_LO | REG_PTR2_HI)
 #define REG_SREG        (REG_SREG_LO | REG_SREG_HI)
-#define REG_EAX         (REG_AX | REG_SREG)
+#define REG_SAVE        (REG_SAVE_LO | REG_SAVE_HI)
+#define REG_SP          (REG_SP_LO | REG_SP_HI)
+#define        REG_AX          (REG_A | REG_X)
+#define REG_AY          (REG_A | REG_Y)
 #define REG_XY         (REG_X | REG_Y)
 #define REG_AXY                (REG_AX | REG_Y)
+#define REG_EAX         (REG_AX | REG_SREG)
 #define REG_EAXY        (REG_EAX | REG_Y)
-#define REG_PTR1        (REG_PTR1_LO | REG_PTR1_HI)
-#define REG_PTR2        (REG_PTR2_LO | REG_PTR2_HI)
-#define REG_PTR3        (REG_PTR3_LO | REG_PTR3_HI)
-#define REG_PTR4        (REG_PTR4_LO | REG_PTR4_HI)
+#define REG_ZP          0xFFF8U
 #define REG_ALL         0xFFFFU
 
 
+
+/* Zero page register info */
+typedef struct ZPInfo ZPInfo;
+struct ZPInfo {
+    unsigned char  Len;                /* Length of the following string */
+    char           Name[11];    /* Name of zero page symbol */
+    unsigned short ByteUse;     /* Register info for this symbol */
+    unsigned short WordUse;     /* Register info for 16 bit access */
+};
+
+
+
+/* Defines for the conditions in a compare */
+typedef enum {
+    CMP_INV = -1,
+    CMP_EQ,
+    CMP_NE,
+    CMP_GT,
+    CMP_GE,
+    CMP_LT,
+    CMP_LE,
+    CMP_UGT,
+    CMP_UGE,
+    CMP_ULT,
+    CMP_ULE
+} cmp_t;
+
+
+
 /*****************************************************************************/
 /*                                          Code                                    */
 /*****************************************************************************/
@@ -97,13 +132,12 @@ void GetFuncInfo (const char* Name, unsigned short* Use, unsigned short* Chg);
  * load all registers.
  */
 
-int IsZPName (const char* Name, unsigned short* RegInfo);
-/* Return true if the given name is a zero page symbol. If the RegInfo
- * pointer is not NULL, it is filled with the register info for the
- * zero page location found.
+const ZPInfo* GetZPInfo (const char* Name);
+/* If the given name is a zero page symbol, return a pointer to the info
+ * struct for this symbol, otherwise return NULL.
  */
 
-unsigned GetRegInfo (struct CodeSeg* S, unsigned Index);
+unsigned GetRegInfo (struct CodeSeg* S, unsigned Index, unsigned Wanted);
 /* Determine register usage information for the instructions starting at the
  * given index.
  */
@@ -117,6 +151,29 @@ int RegXUsed (struct CodeSeg* S, unsigned Index);
 int RegYUsed (struct CodeSeg* S, unsigned Index);
 /* Check if the value in Y is used. */
 
+int RegAXUsed (struct CodeSeg* S, unsigned Index);
+/* Check if the value in A or(!) the value in X are used. */
+
+int RegEAXUsed (struct CodeSeg* S, unsigned Index);
+/* Check if any of the four bytes in EAX are used. */
+
+unsigned GetKnownReg (unsigned Use, const struct RegContents* RC);
+/* Return the register or zero page location from the set in Use, thats
+ * contents are known. If Use does not contain any register, or if the
+ * register in question does not have a known value, return REG_NONE.
+ */
+
+cmp_t FindBoolCmpCond (const char* Name);
+/* Check if the given string is the name of one of the boolean transformer
+ * subroutine, and if so, return the condition that is evaluated by this
+ * routine. Return CMP_INV if the condition is not recognised.
+ */
+
+cmp_t FindTosCmpCond (const char* Name);
+/* Check if this is a call to one of the TOS compare functions (tosgtax).
+ * Return the condition code or CMP_INV on failure.
+ */
+
 
 
 /* End of codeinfo.h */