FreeCalypso > hg > freecalypso-reveng

annotate objgrep/grep.c @ 226:30804198d5d0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Pirelli's a_pwr_thresholds[] table found
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 29 Nov 2017 22:51:50 +0000
parents c25367bb7656
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
167
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1 /*
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
2 * objgrep: the actual grep operation
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
3 */
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
4
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
5 #include <sys/types.h>
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
6 #include <stdio.h>
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
7 #include <stdint.h>
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
8 #include <stdlib.h>
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
9 #include <string.h>
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
10 #include <strings.h>
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
11 #include "globals.h"
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
12
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
13 do_grep()
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
14 {
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
15 uint32_t *match, *mask, *haystack;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
16 unsigned matchlen_words, haystack_len_words, haystack_limit;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
17 unsigned i, j;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
18
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
19 match = (uint32_t *)pattern_match;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
20 mask = (uint32_t *)pattern_mask;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
21 haystack = (uint32_t *)binfilemap;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
22 matchlen_words = pattern_len >> 2;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
23 haystack_len_words = binfile_tot_size >> 2;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
24 haystack_limit = haystack_len_words - matchlen_words;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
25 for (i = 0; i <= haystack_limit; i++) {
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
26 for (j = 0; j < matchlen_words; j++)
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
27 if ((haystack[i+j] & mask[j]) != match[j])
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
28 goto haystack_next;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
29 /* got a match! */
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
30 match_offset = i << 2;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
31 return(1);
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
32 haystack_next: continue;
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
33 }
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
34 return(0);
c25367bb7656 objgrep: written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
35 }