1 /*****************************************************************************/
5 /* Code label 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 /*****************************************************************************/
48 /*****************************************************************************/
50 /*****************************************************************************/
58 /*****************************************************************************/
59 /* struct CodeLabel */
60 /*****************************************************************************/
64 /* Label flags, bitmapped */
65 #define LF_DEF 0x0001U /* Label was defined */
68 typedef struct CodeLabel CodeLabel;
70 CodeLabel* Next; /* Next in hash list */
71 char* Name; /* Label name */
72 unsigned short Hash; /* Hash over the name */
73 unsigned short Flags; /* Flag flags */
74 struct CodeEntry* Owner; /* Owner entry */
75 Collection JumpFrom; /* Entries that jump here */
80 /*****************************************************************************/
82 /*****************************************************************************/
86 CodeLabel* NewCodeLabel (const char* Name, unsigned Hash);
87 /* Create a new code label, initialize and return it */
89 void FreeCodeLabel (CodeLabel* L);
90 /* Free the given code label */
92 void AddLabelRef (CodeLabel* L, struct CodeEntry* E);
93 /* Let the CodeEntry E reference the label L */
95 unsigned RemoveLabelRef (CodeLabel* L, const struct CodeEntry* E);
96 /* Remove a reference to this label, return the number of remaining references */
98 void OutputCodeLabel (FILE* F, const CodeLabel* L);
99 /* Output the code label to a file */
103 /* End of codelab.h */