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 /*****************************************************************************/
52 /*****************************************************************************/
54 /*****************************************************************************/
58 /* Size of the label hash table */
59 #define CS_LABEL_HASH_SIZE 29
61 /* Code segment structure */
62 typedef struct CodeSeg CodeSeg;
64 CodeSeg* Next; /* Pointer to next CodeSeg */
65 char* SegName; /* Segment name */
66 char* FuncName; /* Name of function */
67 Collection Entries; /* List of code entries */
68 Collection Labels; /* Labels for next insn */
69 CodeLabel* LabelHash [CS_LABEL_HASH_SIZE]; /* Label hash table */
72 /* Pointer to current code segment */
77 /*****************************************************************************/
79 /*****************************************************************************/
83 CodeSeg* NewCodeSeg (const char* SegName, const char* FuncName);
84 /* Create a new code segment, initialize and return it */
86 void FreeCodeSeg (CodeSeg* S);
87 /* Free a code segment including all code entries */
89 void PushCodeSeg (CodeSeg* S);
90 /* Push the given code segment onto the stack */
92 CodeSeg* PopCodeSeg (void);
93 /* Remove the current code segment from the stack and return it */
95 void AddCodeSegLine (CodeSeg* S, const char* Format, ...) attribute ((format(printf,2,3)));
96 /* Add a line to the given code segment */
98 void DelCodeSegLine (CodeSeg* S, unsigned Index);
99 /* Delete an entry from the code segment. This includes deleting any associated
100 * labels, removing references to labels and even removing the referenced labels
101 * if the reference count drops to zero.
104 void AddCodeLabel (CodeSeg* S, const char* Name);
105 /* Add a code label for the next instruction to follow */
107 void DelCodeLabel (CodeSeg* S, CodeLabel* L);
108 /* Remove references from this label and delete it. */
110 void AddCodeSegHint (CodeSeg* S, unsigned Hint);
111 /* Add a hint for the preceeding instruction */
113 void DelCodeSegAfter (CodeSeg* S, unsigned Last);
114 /* Delete all entries including the given one */
116 void OutputCodeSeg (FILE* F, const CodeSeg* S);
117 /* Output the code segment data to a file */
119 CodeLabel* FindCodeLabel (CodeSeg* S, const char* Name, unsigned Hash);
120 /* Find the label with the given name. Return the label or NULL if not found */
122 void MergeCodeLabels (CodeSeg* S);
123 /* Merge code labels. That means: For each instruction, remove all labels but
124 * one and adjust the code entries accordingly.
127 unsigned GetCodeSegEntries (const CodeSeg* S);
128 /* Return the number of entries for the given code segment */
132 /* End of codeseg.h */