/* Prototypes for supply_gregset etc. */
#include "gregset.h"
+
+/* Defines ps_err_e, struct ps_prochandle. */
+#include "gdb_proc_service.h"
+
+#ifndef PTRACE_GET_THREAD_AREA
+#define PTRACE_GET_THREAD_AREA 25
+#endif
\f
/* This table must line up with gdbarch_register_name in "m68k-tdep.c". */
static const int regmap[] =
fetch_register (struct regcache *regcache, int regno)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- long regaddr;
+ long regaddr, val;
int i;
char buf[MAX_REGISTER_SIZE];
int tid;
for (i = 0; i < register_size (gdbarch, regno); i += sizeof (long))
{
errno = 0;
- *(long *) &buf[i] = ptrace (PTRACE_PEEKUSER, tid, regaddr, 0);
+ val = ptrace (PTRACE_PEEKUSER, tid, regaddr, 0);
+ memcpy (&buf[i], &val, sizeof (long));
regaddr += sizeof (long);
if (errno != 0)
error (_("Couldn't read register %s (#%d): %s."),
store_register (const struct regcache *regcache, int regno)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- long regaddr;
+ long regaddr, val;
int i;
int tid;
char buf[MAX_REGISTER_SIZE];
for (i = 0; i < register_size (gdbarch, regno); i += sizeof (long))
{
errno = 0;
- ptrace (PTRACE_POKEUSER, tid, regaddr, *(long *) &buf[i]);
+ memcpy (&val, &buf[i], sizeof (long));
+ ptrace (PTRACE_POKEUSER, tid, regaddr, val);
regaddr += sizeof (long);
if (errno != 0)
error (_("Couldn't write register %s (#%d): %s."),
}
\f
+/* Fetch the thread-local storage pointer for libthread_db. */
+
+ps_err_e
+ps_get_thread_area (const struct ps_prochandle *ph,
+ lwpid_t lwpid, int idx, void **base)
+{
+ if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) < 0)
+ return PS_ERR;
+
+ /* IDX is the bias from the thread pointer to the beginning of the
+ thread descriptor. It has to be subtracted due to implementation
+ quirks in libthread_db. */
+ *base = (char *) *base - idx;
+
+ return PS_OK;
+}
+\f
+
/* Register that we are able to handle GNU/Linux ELF core file
formats. */