1 /*****************************************************************************/
5 /* Code segment structure */
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 /*****************************************************************************/
54 /*****************************************************************************/
56 /*****************************************************************************/
60 /* Size of the label hash table */
61 #define CS_LABEL_HASH_SIZE 29
63 /* Code segment structure */
64 typedef struct CodeSeg CodeSeg;
66 char* SegName; /* Segment name */
67 SymEntry* Func; /* Owner function */
68 Collection Entries; /* List of code entries */
69 Collection Labels; /* Labels for next insn */
70 CodeLabel* LabelHash [CS_LABEL_HASH_SIZE]; /* Label hash table */
75 /*****************************************************************************/
77 /*****************************************************************************/
81 CodeSeg* NewCodeSeg (const char* SegName, SymEntry* Func);
82 /* Create a new code segment, initialize and return it */
84 void FreeCodeSeg (CodeSeg* S);
85 /* Free a code segment including all code entries */
87 void AddCodeEntry (CodeSeg* S, const char* Format, va_list ap) attribute ((format(printf,2,0)));
88 /* Add a line to the given code segment */
90 void DelCodeEntry (CodeSeg* S, unsigned Index);
91 /* Delete an entry from the code segment. This includes deleting any associated
92 * labels, removing references to labels and even removing the referenced labels
93 * if the reference count drops to zero.
96 void AddCodeLabel (CodeSeg* S, const char* Name);
97 /* Add a code label for the next instruction to follow */
99 void DelCodeLabel (CodeSeg* S, CodeLabel* L);
100 /* Remove references from this label and delete it. */
102 void AddCodeSegHint (CodeSeg* S, unsigned Hint);
103 /* Add a hint for the preceeding instruction */
105 void DelCodeSegAfter (CodeSeg* S, unsigned Last);
106 /* Delete all entries including the given one */
108 void OutputCodeSeg (const CodeSeg* S, FILE* F);
109 /* Output the code segment data to a file */
111 CodeLabel* FindCodeLabel (CodeSeg* S, const char* Name, unsigned Hash);
112 /* Find the label with the given name. Return the label or NULL if not found */
114 void MergeCodeLabels (CodeSeg* S);
115 /* Merge code labels. That means: For each instruction, remove all labels but
116 * one and adjust the code entries accordingly.
119 unsigned GetCodeSegEntries (const CodeSeg* S);
120 /* Return the number of entries for the given code segment */
124 /* End of codeseg.h */