RepoMirrors/crash
1
0
Fork 0
mirror of https://github.com/crash-utility/crash synced 2025-02-23 08:56:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

Implemented a new fill_struct_member_data() function that gathers

Browse Source 
a bundle of data that describes a structure member.  The function
receives a pointer to a struct_member_data structure, in which the
caller has initialized the "structure" and "member" name pointers:

  struct struct_member_data {
          char *structure;
          char *member;
          long type;
          long unsigned_type;
          long length;
          long offset;
          long bitpos;
          long bitsize;
  };

A gdb "printm" command is crafted using those two fields, and the
output of the command is used to initialize the remaining six fields.
Adapted from Qiao Nuohan's "pstruct" extension module.
(anderson@redhat.com, qiaonuohan@cn.fujitsu.com)
This commit is contained in:
Dave Anderson 2015-04-14 16:41:49 -04:00
parent 70e58f1d10
commit b4970528b2
2 changed files with 63 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
defs.h
View File

@ -4650,6 +4650,17 @@ void dump_trace(void **);
int enumerator_value(char *, long *);
int dump_enumerator_list(char *);
struct load_module *init_module_function(ulong);
struct struct_member_data {
char *structure;
char *member;
long type;
long unsigned_type;
long length;
long offset;
long bitpos;
long bitsize;
};
int fill_struct_member_data(struct struct_member_data *);
/*
* memory.c

54
symbols.c
View File

@ -1,8 +1,8 @@
/* symbols.c - core analysis suite
*
* Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc.
* Copyright (C) 2002-2014 David Anderson
* Copyright (C) 2002-2014 Red Hat, Inc. All rights reserved.
* Copyright (C) 2002-2015 David Anderson
* Copyright (C) 2002-2015 Red Hat, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -12113,3 +12113,53 @@ init_module_function(ulong vaddr)
return NULL;
}
/*
* The caller fills in the structure and member name fields of
* the passed-in struct_member_data structure, which are then
* passed to the gdb "printm" command to get the member data.
*
* Adapted from Qiao Nuohan's "pstruct" extension module.
*/
int
fill_struct_member_data(struct struct_member_data *smd)
{
int i, cnt;
char buf[BUFSIZE];
char *printm_list[MAXARGS];
cnt = 0;
sprintf(buf, "printm ((struct %s *)0x0).%s",
smd->structure, smd->member);
open_tmpfile2();
if (!gdb_pass_through(buf, pc->tmpfile2, GNU_RETURN_ON_ERROR))
return FALSE;
rewind(pc->tmpfile2);
if (fgets(buf, BUFSIZE, pc->tmpfile2)) {
if (CRASHDEBUG(2))
fprintf(fp, "%s.%s: %s",
smd->structure, smd->member, buf);
cnt = parse_line(buf, printm_list);
}
close_tmpfile2();
if (cnt != 6)
return FALSE;
for (i = 0; i < cnt; i++) {
if (!decimal(printm_list[i], 0))
return FALSE;
}
smd->type = dtol(printm_list[0], RETURN_ON_ERROR, NULL);
smd->unsigned_type = dtol(printm_list[1], RETURN_ON_ERROR, NULL);
smd->length = dtol(printm_list[2], RETURN_ON_ERROR, NULL);
smd->offset = dtol(printm_list[3], RETURN_ON_ERROR, NULL);
smd->bitpos = dtol(printm_list[4], RETURN_ON_ERROR, NULL);
smd->bitsize = dtol(printm_list[5], RETURN_ON_ERROR, NULL);
return TRUE;
}