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2001-12-21 Michael Snyder <msnyder@redhat.com> 

* procfs.c (info_proc_cmd): Add the 'mappings' sub-command that
	was dropped a few years ago, when procfs.c was rewritten.
	(info_proc_mappings): New function, implement 'info proc mappings'.
	(mappingflags): New function.
	(_initialize_procfs): Document new option to 'info proc' command.
This commit is contained in:
Michael Snyder 2001-12-28 19:47:08 +00:00
parent a8c0de01fc
commit 388faa4837
2 changed files with 150 additions and 11 deletions
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8
gdb/ChangeLog
View File

@ -67,6 +67,14 @@
* config/powerpc/aix.mt (TDEPFILES): Add xcoffread.o to fix a build
failure.
2001-12-21 Michael Snyder <msnyder@redhat.com>
* procfs.c (info_proc_cmd): Add the 'mappings' sub-command that
was dropped a few years ago, when procfs.c was rewritten.
(info_proc_mappings): New function, implement 'info proc mappings'.
(mappingflags): New function.
(_initialize_procfs): Document new option to 'info proc' command.
2001-12-21 Tom Tromey <tromey@redhat.com>
* configure, config.in: Rebuilt.

153
gdb/procfs.c
View File

@ -2879,9 +2879,6 @@ proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, int len, int wflags)
* or zero.
*/
/* FIXME: it's probably a waste to cache this FD.
It doesn't get called that often... and if I open it
every time, I don't need to lseek it. */
int
proc_iterate_over_mappings (int (*func) (int, CORE_ADDR))
{
@ -5310,18 +5307,142 @@ procfs_find_LDT_entry (ptid_t ptid)
}
#endif /* TM_I386SOL2_H */
/*
* Function: mappingflags
*
* Returns an ascii representation of a memory mapping's flags.
*/
static char *
mappingflags (flags)
long flags;
{
static char asciiflags[8];
strcpy (asciiflags, "-------");
#if defined (MA_PHYS)
if (flags & MA_PHYS)
asciiflags[0] = 'd';
#endif
if (flags & MA_STACK)
asciiflags[1] = 's';
if (flags & MA_BREAK)
asciiflags[2] = 'b';
if (flags & MA_SHARED)
asciiflags[3] = 's';
if (flags & MA_READ)
asciiflags[4] = 'r';
if (flags & MA_WRITE)
asciiflags[5] = 'w';
if (flags & MA_EXEC)
asciiflags[6] = 'x';
return (asciiflags);
}
/*
* Function: info_proc_mappings
*
* Implement the "info proc mappings" subcommand.
*/
static void
info_proc_mappings (procinfo *pi, int summary)
{
char *header_fmt_string, *data_fmt_string;
char pathname[MAX_PROC_NAME_SIZE];
struct prmap *prmaps;
struct prmap *prmap;
int map_fd;
int nmap;
#ifdef NEW_PROC_API
struct stat sbuf;
#endif
if (TARGET_PTR_BIT == 32)
{
header_fmt_string = "\t%10s %10s %10s %10s %7s\n";
data_fmt_string = "\t%#10lx %#10lx %#10x %#10x %7s\n";
}
else
{
header_fmt_string = " %18s %18s %10s %10s %7s\n";
data_fmt_string = " %#18lx %#18lx %#10x %#10x %7s\n";
}
if (summary)
return; /* No output for summary mode. */
/* Get the number of mappings, allocate space,
and read the mappings into prmaps. */
#ifdef NEW_PROC_API
/* Open map fd. */
sprintf (pathname, "/proc/%d/map", pi->pid);
if ((map_fd = open (pathname, O_RDONLY)) < 0)
return; /* Can't open map file. */
/* Make sure it gets closed again. */
make_cleanup_close (map_fd);
/* Use stat to determine the file size, and compute
the number of prmap_t objects it contains. */
if (fstat (map_fd, &sbuf) != 0)
return; /* Can't stat file. */
nmap = sbuf.st_size / sizeof (prmap_t);
prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
if (read (map_fd, (char *) prmaps, nmap * sizeof (*prmaps))
!= (nmap * sizeof (*prmaps)))
return; /* Can't read file. */
#else
/* Use ioctl command PIOCNMAP to get number of mappings. */
if (ioctl (pi->ctl_fd, PIOCNMAP, &nmap) != 0)
return; /* Can't get number of mappings. */
prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
if (ioctl (pi->ctl_fd, PIOCMAP, prmaps) != 0)
return; /* Can't read mappings. */
#endif
printf_filtered ("Mapped address spaces:\n\n");
printf_filtered (header_fmt_string,
"Start Addr",
" End Addr",
" Size",
" Offset",
"Flags");
for (prmap = prmaps; nmap > 0; prmap++, nmap--)
{
printf_filtered (data_fmt_string,
(unsigned long) prmap->pr_vaddr,
(unsigned long) prmap->pr_vaddr
+ prmap->pr_size - 1,
prmap->pr_size,
#ifdef PCAGENT /* Gross hack: only defined on Solaris 2.6+ */
(unsigned int) prmap->pr_offset,
#else
prmap->pr_off,
#endif
mappingflags (prmap->pr_mflags));
}
printf_filtered ("\n");
}
/*
* Function: info_proc_cmd
*
* Implement the "info proc" command.
*/
static void
info_proc_cmd (char *args, int from_tty)
{
struct cleanup *old_chain;
procinfo *process = NULL;
procinfo *thread = NULL;
char **argv = NULL;
char *tmp = NULL;
int pid = 0;
int tid = 0;
procinfo *process = NULL;
procinfo *thread = NULL;
char **argv = NULL;
char *tmp = NULL;
int pid = 0;
int tid = 0;
int mappings = 0;
old_chain = make_cleanup (null_cleanup, 0);
if (args)
@ -5343,6 +5464,10 @@ info_proc_cmd (char *args, int from_tty)
{
tid = strtoul (argv[0] + 1, NULL, 10);
}
else if (strncmp (argv[0], "mappings", strlen (argv[0])) == 0)
{
mappings = 1;
}
else
{
/* [...] */
@ -5389,6 +5514,11 @@ info_proc_cmd (char *args, int from_tty)
proc_prettyprint_why (proc_why (thread), proc_what (thread), 1);
}
if (mappings)
{
info_proc_mappings (process, 0);
}
do_cleanups (old_chain);
}
@ -5466,8 +5596,9 @@ _initialize_procfs (void)
init_procfs_ops ();
add_target (&procfs_ops);
add_info ("proc", info_proc_cmd,
"Show /proc process information about any running process.\
Default is the process being debugged.");
"Show /proc process information about any running process.\n\
Specify process id, or use the program being debugged by default.\n\
Specify keyword 'mappings' for detailed info on memory mappings.");
add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd,
"Give a trace of entries into the syscall.");
add_com ("proc-trace-exit", no_class, proc_trace_sysexit_cmd,