projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 505bf312 KB |
1 | /*- |
| 2 | * Copyright (c) 1980 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * %sccs.include.redist.c% | |
| f644bb55 | 6 | */ |
| 56160dc1 | 7 | |
| f644bb55 | 8 | #ifndef lint |
| 505bf312 KB |
9 | static char sccsid[] = "@(#)srcfile.c 5.2 (Berkeley) %G%"; |
| 10 | #endif /* not lint */ | |
| 56160dc1 ML |
11 | |
| 12 | /* | |
| 13 | * get the source file name associated with a given address | |
| 14 | */ | |
| 15 | ||
| 16 | #include "defs.h" | |
| 17 | #include "mappings.h" | |
| 18 | #include "object.h" | |
| 19 | #include "filetab.h" | |
| 20 | ||
| 21 | char *srcfilename(addr) | |
| 22 | ADDRESS addr; | |
| 23 | { | |
| 24 | register ADDRESS i, j, k; | |
| 25 | ADDRESS a; | |
| 26 | FILETAB *ftp; | |
| 27 | ||
| 28 | if (addr < filetab[0].addr) { | |
| 29 | return(NIL); | |
| 30 | } | |
| 31 | i = 0; | |
| 32 | j = nlhdr.nfiles - 1; | |
| 33 | while (i < j) { | |
| 34 | k = (i + j) / 2; | |
| 35 | ftp = &filetab[k]; | |
| 36 | if ((a = ftp->addr) == addr) { | |
| 37 | return(ftp->filename); | |
| 38 | } else if (addr > a) { | |
| 39 | i = k + 1; | |
| 40 | } else { | |
| 41 | j = k - 1; | |
| 42 | } | |
| 43 | } | |
| 44 | if (addr >= filetab[i].addr) { | |
| 45 | return(filetab[i].filename); | |
| 46 | } else { | |
| 47 | return(filetab[i-1].filename); | |
| 48 | } | |
| 49 | /*NOTREACHED*/ | |
| 50 | } |