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 /*****************************************************************************/
45 /*****************************************************************************/
47 /*****************************************************************************/
51 CodeLabel* NewCodeLabel (const char* Name, unsigned Hash)
52 /* Create a new code label, initialize and return it */
55 CodeLabel* L = xmalloc (sizeof (CodeLabel));
57 /* Initialize the fields */
59 L->Name = xstrdup (Name);
63 InitCollection (&L->JumpFrom);
65 /* Return the new label */
71 void FreeCodeLabel (CodeLabel* L)
72 /* Free the given code label */
77 /* Free the collection */
78 DoneCollection (&L->JumpFrom);
80 /* Delete the struct */
86 void AddLabelRef (CodeLabel* L, struct CodeEntry* E)
87 /* Let the CodeEntry E reference the label L */
89 /* The insn at E jumps to this label */
92 /* Remember that in the label */
93 CollAppend (&L->JumpFrom, E);
98 unsigned RemoveLabelRef (CodeLabel* L, const struct CodeEntry* E)
99 /* Remove a reference to this label, return the number of remaining references */
101 /* Delete the item */
102 CollDeleteItem (&L->JumpFrom, E);
104 /* Return the number of remaining references */
105 return CollCount (&L->JumpFrom);
110 void OutputCodeLabel (FILE* F, const CodeLabel* L)
111 /* Output the code label to a file */
113 fprintf (F, "%s:", L->Name);