/* */
/* */
/* */
-/* (C) 2001 Ullrich von Bassewitz */
-/* Wacholderweg 14 */
-/* D-70597 Stuttgart */
-/* EMail: uz@musoftware.de */
+/* (C) 2001-2005, Ullrich von Bassewitz */
+/* Römerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
#include <stdio.h>
+#include <string.h>
/* common */
#include "coll.h"
#include "codelab.h"
#include "lineinfo.h"
#include "opcodes.h"
+#include "reginfo.h"
/* Code entry structure */
typedef struct CodeEntry CodeEntry;
struct CodeEntry {
- opc_t OPC; /* Opcode */
- am_t AM; /* Adressing mode */
+ unsigned char OPC; /* Opcode */
+ unsigned char AM; /* Adressing mode */
+ unsigned char Size; /* Estimated size */
+ unsigned char Flags; /* Flags */
char* Arg; /* Argument as string */
unsigned long Num; /* Numeric argument */
- unsigned short Flags; /* Flags */
unsigned short Info; /* Additional code info */
- unsigned char Size; /* Estimated size */
- unsigned char Use; /* Registers used */
- unsigned char Chg; /* Registers changed/destroyed */
+ unsigned short Use; /* Registers used */
+ unsigned short Chg; /* Registers changed/destroyed */
CodeLabel* JumpTo; /* Jump label */
Collection Labels; /* Labels for this instruction */
LineInfo* LI; /* Source line info for this insn */
+ RegInfo* RI; /* Register info for this insn */
};
+const char* MakeHexArg (unsigned Num);
+/* Convert Num into a string in the form $XY, suitable for passing it as an
+ * argument to NewCodeEntry, and return a pointer to the string.
+ * BEWARE: The function returns a pointer to a static buffer, so the value is
+ * gone if you call it twice (and apart from that it's not thread and signal
+ * safe).
+ */
+
CodeEntry* NewCodeEntry (opc_t OPC, am_t AM, const char* Arg,
- CodeLabel* JumpTo, LineInfo* LI);
+ CodeLabel* JumpTo, LineInfo* LI);
/* Create a new code entry, initialize and return it */
void FreeCodeEntry (CodeEntry* E);
/* Free the given code entry */
-void ReplaceOPC (CodeEntry* E, opc_t OPC);
+void CE_ReplaceOPC (CodeEntry* E, opc_t OPC);
/* Replace the opcode of the instruction. This will also replace related info,
* Size, Use and Chg, but it will NOT update any arguments or labels.
*/
int CodeEntriesAreEqual (const CodeEntry* E1, const CodeEntry* E2);
/* Check if both code entries are equal */
-void AttachCodeLabel (CodeEntry* E, CodeLabel* L);
+void CE_AttachLabel (CodeEntry* E, CodeLabel* L);
/* Attach the label to the entry */
+void CE_ClearJumpTo (CodeEntry* E);
+/* Clear the JumpTo entry and the argument (which contained the name of the
+ * label). Note: The function will not clear the backpointer from the label,
+ * so use it with care.
+ */
+
#if defined(HAVE_INLINE)
-INLINE int CodeEntryHasLabel (const CodeEntry* E)
+INLINE int CE_HasLabel (const CodeEntry* E)
/* Check if the given code entry has labels attached */
{
return (CollCount (&E->Labels) > 0);
}
#else
-# define CodeEntryHasLabel(E) (CollCount (&(E)->Labels) > 0)
+# define CE_HasLabel(E) (CollCount (&(E)->Labels) > 0)
#endif
#if defined(HAVE_INLINE)
-INLINE unsigned GetCodeLabelCount (const CodeEntry* E)
+INLINE unsigned CE_GetLabelCount (const CodeEntry* E)
/* Get the number of labels attached to this entry */
{
return CollCount (&E->Labels);
}
#else
-# define GetCodeLabelCount(E) CollCount (&(E)->Labels)
+# define CE_GetLabelCount(E) CollCount (&(E)->Labels)
#endif
#if defined(HAVE_INLINE)
-INLINE CodeLabel* GetCodeLabel (CodeEntry* E, unsigned Index)
+INLINE CodeLabel* CE_GetLabel (CodeEntry* E, unsigned Index)
/* Get a label from this code entry */
{
return CollAt (&E->Labels, Index);
}
#else
-# define GetCodeLabel(E, Index) CollAt (&(E)->Labels, (Index))
+# define CE_GetLabel(E, Index) CollAt (&(E)->Labels, (Index))
#endif
-void MoveCodeLabel (CodeLabel* L, CodeEntry* E);
+void CE_MoveLabel (CodeLabel* L, CodeEntry* E);
/* Move the code label L from it's former owner to the code entry E. */
#if defined(HAVE_INLINE)
-INLINE int CodeEntryHasMark (const CodeEntry* E)
+INLINE int CE_HasMark (const CodeEntry* E)
/* Return true if the given code entry has the CEF_USERMARK flag set */
{
return (E->Flags & CEF_USERMARK) != 0;
}
#else
-# define CodeEntryHasMark(E) (((E)->Flags & CEF_USERMARK) != 0)
+# define CE_HasMark(E) (((E)->Flags & CEF_USERMARK) != 0)
#endif
#if defined(HAVE_INLINE)
-INLINE void CodeEntrySetMark (CodeEntry* E)
+INLINE void CE_SetMark (CodeEntry* E)
/* Set the CEF_USERMARK flag for the given entry */
{
E->Flags |= CEF_USERMARK;
}
#else
-# define CodeEntrySetMark(E) ((E)->Flags |= CEF_USERMARK)
+# define CE_SetMark(E) ((E)->Flags |= CEF_USERMARK)
#endif
#if defined(HAVE_INLINE)
-INLINE void CodeEntryResetMark (CodeEntry* E)
+INLINE void CE_ResetMark (CodeEntry* E)
/* Reset the CEF_USERMARK flag for the given entry */
{
E->Flags &= ~CEF_USERMARK;
}
#else
-# define CodeEntryResetMark(E) ((E)->Flags &= ~CEF_USERMARK)
+# define CE_ResetMark(E) ((E)->Flags &= ~CEF_USERMARK)
#endif
-void CodeEntrySetArg (CodeEntry* E, const char* Arg);
-/* Set a new argument for the given code entry. An old string is deleted. */
+void CE_SetArg (CodeEntry* E, const char* Arg);
+/* Replace the argument by the new one. */
-void OutputCodeEntry (const CodeEntry* E, FILE* F);
+void CE_SetNumArg (CodeEntry* E, long Num);
+/* Set a new numeric argument for the given code entry that must already
+ * have a numeric argument.
+ */
+
+int CE_IsConstImm (const CodeEntry* E);
+/* Return true if the argument of E is a constant immediate value */
+
+int CE_IsKnownImm (const CodeEntry* E, unsigned long Num);
+/* Return true if the argument of E is a constant immediate value that is
+ * equal to Num.
+ */
+
+#if defined(HAVE_INLINE)
+INLINE int CE_IsCallTo (const CodeEntry* E, const char* Name)
+/* Check if this is a call to the given function */
+{
+ return (E->OPC == OP65_JSR && strcmp (E->Arg, Name) == 0);
+}
+#else
+# define CE_IsCallTo(E, Name) ((E)->OPC == OP65_JSR && strcmp ((E)->Arg, (Name)) == 0)
+#endif
+
+int CE_UseLoadFlags (const CodeEntry* E);
+/* Return true if the instruction uses any flags that are set by a load of
+ * a register (N and Z).
+ */
+
+void CE_FreeRegInfo (CodeEntry* E);
+/* Free an existing register info struct */
+
+void CE_GenRegInfo (CodeEntry* E, RegContents* InputRegs);
+/* Generate register info for this instruction. If an old info exists, it is
+ * overwritten.
+ */
+
+void CE_Output (const CodeEntry* E, FILE* F);
/* Output the code entry to a file */
+
projects / cc65 / blobdiff