1 /*****************************************************************************/
5 /* Generate assembler code labels */
9 /* (C) 2000-2009 Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
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 /*****************************************************************************/
54 unsigned GetLocalLabel (void)
55 /* Get an unused label. Will never return zero. */
57 /* Number to generate unique labels */
58 static unsigned NextLabel = 0;
60 /* Check for an overflow */
61 if (NextLabel >= 0xFFFF) {
62 Internal ("Local label overflow");
65 /* Return the next label */
71 const char* LocalLabelName (unsigned L)
72 /* Make a label name from the given label number. The label name will be
73 * created in static storage and overwritten when calling the function
78 sprintf (Buf, "L%04X", L);
84 int IsLocalLabelName (const char* Name)
85 /* Return true if Name is the name of a local label */
89 if (Name[0] != 'L' || strlen (Name) != 5) {
92 for (I = 1; I <= 4; ++I) {
93 if (!IsXDigit (Name[I])) {
98 /* Local label name */