1 /*****************************************************************************/
5 /* Code segment entry */
9 /* (C) 2001 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 /*****************************************************************************/
55 /*****************************************************************************/
57 /*****************************************************************************/
62 #define CEF_USERMARK 0x0001U /* Generic mark by user functions */
63 #define CEF_NUMARG 0x0002U /* Insn has numerical argument */
65 /* Code entry structure */
66 typedef struct CodeEntry CodeEntry;
68 opc_t OPC; /* Opcode */
69 am_t AM; /* Adressing mode */
70 char* Arg; /* Argument as string */
71 unsigned long Num; /* Numeric argument */
72 unsigned short Flags; /* Flags */
73 unsigned short Info; /* Additional code info */
74 unsigned char Size; /* Estimated size */
75 unsigned char Use; /* Registers used */
76 unsigned char Chg; /* Registers changed/destroyed */
77 CodeLabel* JumpTo; /* Jump label */
78 Collection Labels; /* Labels for this instruction */
79 LineInfo* LI; /* Source line info for this insn */
80 RegInfo* RI; /* Register info for this insn */
85 /*****************************************************************************/
87 /*****************************************************************************/
91 CodeEntry* NewCodeEntry (opc_t OPC, am_t AM, const char* Arg,
92 CodeLabel* JumpTo, LineInfo* LI);
93 /* Create a new code entry, initialize and return it */
95 void FreeCodeEntry (CodeEntry* E);
96 /* Free the given code entry */
98 void CE_ReplaceOPC (CodeEntry* E, opc_t OPC);
99 /* Replace the opcode of the instruction. This will also replace related info,
100 * Size, Use and Chg, but it will NOT update any arguments or labels.
103 int CodeEntriesAreEqual (const CodeEntry* E1, const CodeEntry* E2);
104 /* Check if both code entries are equal */
106 void CE_AttachLabel (CodeEntry* E, CodeLabel* L);
107 /* Attach the label to the entry */
109 #if defined(HAVE_INLINE)
110 INLINE int CE_HasLabel (const CodeEntry* E)
111 /* Check if the given code entry has labels attached */
113 return (CollCount (&E->Labels) > 0);
116 # define CE_HasLabel(E) (CollCount (&(E)->Labels) > 0)
119 #if defined(HAVE_INLINE)
120 INLINE unsigned CE_GetLabelCount (const CodeEntry* E)
121 /* Get the number of labels attached to this entry */
123 return CollCount (&E->Labels);
126 # define CE_GetLabelCount(E) CollCount (&(E)->Labels)
129 #if defined(HAVE_INLINE)
130 INLINE CodeLabel* CE_GetLabel (CodeEntry* E, unsigned Index)
131 /* Get a label from this code entry */
133 return CollAt (&E->Labels, Index);
136 # define CE_GetLabel(E, Index) CollAt (&(E)->Labels, (Index))
139 void CE_MoveLabel (CodeLabel* L, CodeEntry* E);
140 /* Move the code label L from it's former owner to the code entry E. */
142 #if defined(HAVE_INLINE)
143 INLINE int CE_HasMark (const CodeEntry* E)
144 /* Return true if the given code entry has the CEF_USERMARK flag set */
146 return (E->Flags & CEF_USERMARK) != 0;
149 # define CE_HasMark(E) (((E)->Flags & CEF_USERMARK) != 0)
152 #if defined(HAVE_INLINE)
153 INLINE void CE_SetMark (CodeEntry* E)
154 /* Set the CEF_USERMARK flag for the given entry */
156 E->Flags |= CEF_USERMARK;
159 # define CE_SetMark(E) ((E)->Flags |= CEF_USERMARK)
162 #if defined(HAVE_INLINE)
163 INLINE void CE_ResetMark (CodeEntry* E)
164 /* Reset the CEF_USERMARK flag for the given entry */
166 E->Flags &= ~CEF_USERMARK;
169 # define CE_ResetMark(E) ((E)->Flags &= ~CEF_USERMARK)
172 void CE_SetArg (CodeEntry* E, const char* Arg);
173 /* Set a new argument for the given code entry. An old string is deleted. */
175 int CE_KnownImm (const CodeEntry* E);
176 /* Return true if the argument of E is a known immediate value */
178 void CE_FreeRegInfo (CodeEntry* E);
179 /* Free an existing register info struct */
181 void CE_GenRegInfo (CodeEntry* E, RegContents* InputRegs);
182 /* Generate register info for this instruction. If an old info exists, it is
186 void CE_Output (const CodeEntry* E, FILE* F);
187 /* Output the code entry to a file */
191 /* End of codeent.h */