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[nto] Implement TARGET_OBJECT_AUXV.

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Fix 'info auxv' for nto.

gdb/ChangeLog:

	* nto-procfs.c (sys/auxv.h): Include.
	(procfs_xfer_partial): Implement TARGET_OBJECT_AUXV.
	* nto-tdep.c (nto_read_auxv_from_initial_stack): New function.
	* nto-tdep.h (nto_read_auxv_from_initial_stack): New declaration.
This commit is contained in:
Aleksandar Ristovski
2015-10-20 12:58:47 -04:00
parent 609c3040c2
commit 8a6c0ccdd2
4 changed files with 127 additions and 0 deletions
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34
gdb/nto-procfs.c
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@ -30,6 +30,8 @@
#include <sys/syspage.h>
#include <dirent.h>
#include <sys/netmgr.h>
#include <sys/auxv.h>
#include "gdbcore.h"
#include "inferior.h"
#include "target.h"
@ -885,6 +887,38 @@ procfs_xfer_partial (struct target_ops *ops, enum target_object object,
{
case TARGET_OBJECT_MEMORY:
return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len);
case TARGET_OBJECT_AUXV:
if (readbuf != NULL)
{
int err;
CORE_ADDR initial_stack;
debug_process_t procinfo;
/* For 32-bit architecture, size of auxv_t is 8 bytes. */
const unsigned int sizeof_auxv_t = sizeof (auxv_t);
const unsigned int sizeof_tempbuf = 20 * sizeof_auxv_t;
int tempread;
gdb_byte *const tempbuf = alloca (sizeof_tempbuf);
if (tempbuf == NULL)
return TARGET_XFER_E_IO;
err = devctl (ctl_fd, DCMD_PROC_INFO, &procinfo,
sizeof procinfo, 0);
if (err != EOK)
return TARGET_XFER_E_IO;
initial_stack = procinfo.initial_stack;
/* procfs is always 'self-hosted', no byte-order manipulation. */
tempread = nto_read_auxv_from_initial_stack (initial_stack, tempbuf,
sizeof_tempbuf,
sizeof (auxv_t));
tempread = min (tempread, len) - offset;
memcpy (readbuf, tempbuf + offset, tempread);
*xfered_len = tempread;
return tempread ? TARGET_XFER_OK : TARGET_XFER_EOF;
}
/* Fallthru */
default:
return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
readbuf, writebuf, offset, len,