-/* Functions specific to running gdb native on HPPA running Linux.
- Copyright 2004 Free Software Foundation, Inc.
+/* Functions specific to running GDB native on HPPA running GNU/Linux.
+
+ Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "gdbcore.h"
#include "regcache.h"
#include "gdb_string.h"
+#include "inferior.h"
+#include "target.h"
+#include "linux-nat.h"
#include <sys/procfs.h>
-#include <string.h>
+#include <sys/ptrace.h>
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,43)
+#include <asm/offset.h>
+#else
#include <asm/offsets.h>
+#endif
#include "hppa-tdep.h"
PT_FR31, PT_FR31 + 4,
};
-CORE_ADDR
-register_addr (int regno, CORE_ADDR blockend)
+static CORE_ADDR
+hppa_linux_register_addr (int regno, CORE_ADDR blockend)
{
CORE_ADDR addr;
- if ((unsigned) regno >= NUM_REGS)
- error ("Invalid register number %d.", regno);
+ if ((unsigned) regno >= gdbarch_num_regs (current_gdbarch))
+ error (_("Invalid register number %d."), regno);
if (u_offsets[regno] == -1)
addr = 0;
HPPA_CCR_REGNUM, HPPA_EIEM_REGNUM,
};
+
+
+/* Fetch one register. */
+
+static void
+fetch_register (struct regcache *regcache, int regno)
+{
+ int tid;
+ int val;
+
+ if (gdbarch_cannot_fetch_register (current_gdbarch, regno))
+ {
+ regcache_raw_supply (regcache, regno, NULL);
+ return;
+ }
+
+ /* GNU/Linux LWP ID's are process ID's. */
+ tid = TIDGET (inferior_ptid);
+ if (tid == 0)
+ tid = PIDGET (inferior_ptid); /* Not a threaded program. */
+
+ errno = 0;
+ val = ptrace (PTRACE_PEEKUSER, tid, hppa_linux_register_addr (regno, 0), 0);
+ if (errno != 0)
+ error (_("Couldn't read register %s (#%d): %s."),
+ gdbarch_register_name (current_gdbarch, regno),
+ regno, safe_strerror (errno));
+
+ regcache_raw_supply (regcache, regno, &val);
+}
+
+/* Store one register. */
+
+static void
+store_register (const struct regcache *regcache, int regno)
+{
+ int tid;
+ int val;
+
+ if (gdbarch_cannot_store_register (current_gdbarch, regno))
+ return;
+
+ /* GNU/Linux LWP ID's are process ID's. */
+ tid = TIDGET (inferior_ptid);
+ if (tid == 0)
+ tid = PIDGET (inferior_ptid); /* Not a threaded program. */
+
+ errno = 0;
+ regcache_raw_collect (regcache, regno, &val);
+ ptrace (PTRACE_POKEUSER, tid, hppa_linux_register_addr (regno, 0), val);
+ if (errno != 0)
+ error (_("Couldn't write register %s (#%d): %s."),
+ gdbarch_register_name (current_gdbarch, regno),
+ regno, safe_strerror (errno));
+}
+
+/* Fetch registers from the child process. Fetch all registers if
+ regno == -1, otherwise fetch all general registers or all floating
+ point registers depending upon the value of regno. */
+
+static void
+hppa_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
+{
+ if (-1 == regno)
+ {
+ for (regno = 0; regno < gdbarch_num_regs (current_gdbarch); regno++)
+ fetch_register (regcache, regno);
+ }
+ else
+ {
+ fetch_register (regcache, regno);
+ }
+}
+
+/* Store registers back into the inferior. Store all registers if
+ regno == -1, otherwise store all general registers or all floating
+ point registers depending upon the value of regno. */
+
+static void
+hppa_linux_store_inferior_registers (struct regcache *regcache, int regno)
+{
+ if (-1 == regno)
+ {
+ for (regno = 0; regno < gdbarch_num_regs (current_gdbarch); regno++)
+ store_register (regcache, regno);
+ }
+ else
+ {
+ store_register (regcache, regno);
+ }
+}
+
+/* Fill GDB's register array with the general-purpose register values
+ in *gregsetp. */
+
void
-supply_gregset (gdb_gregset_t *gregsetp)
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
{
int i;
- greg_t *regp = (elf_greg_t *) gregsetp;
+ const greg_t *regp = (const elf_greg_t *) gregsetp;
for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++, regp++)
{
int regno = greg_map[i];
- int size = register_size (current_gdbarch, regno);
- /* When running a 64 bit kernel, a greg_t may be larger than the
- actual register, so just pick off the LS bits of big-endian word. */
- supply_register (regno, ((char *) (regp + 1)) - size);
+ regcache_raw_supply (regcache, regno, regp);
}
}
+/* Fill register regno (if it is a general-purpose register) in
+ *gregsetp with the appropriate value from GDB's register array.
+ If regno is -1, do this for all registers. */
+
void
-fill_gregset (gdb_gregset_t *gregsetp, int regno)
+fill_gregset (const struct regcache *regcache,
+ gdb_gregset_t *gregsetp, int regno)
{
int i;
- greg_t *regp = (greg_t *) gregsetp;
- memset (gregsetp, 0, sizeof (*gregsetp));
- for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++, regp++)
+ for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++)
{
- int regi = greg_map[i];
+ int mregno = greg_map[i];
- if (regno == -1 || regi == regno)
+ if (regno == -1 || regno == mregno)
{
- int rawsize = register_size (current_gdbarch, regi);
- regcache_collect (regi, ((char *) (regp + 1)) - rawsize);
+ regcache_raw_collect(regcache, mregno, &(*gregsetp)[i]);
}
}
}
idea of the current floating point register values. */
void
-supply_fpregset (gdb_fpregset_t *fpregsetp)
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
{
- register int regi;
- char *from;
+ int regi;
+ const char *from;
for (regi = 0; regi <= 31; regi++)
{
- from = (char *) &((*fpregsetp)[regi]);
- supply_register (2*regi + HPPA_FP0_REGNUM, from);
- supply_register (2*regi + HPPA_FP0_REGNUM + 1, from + 4);
+ from = (const char *) &((*fpregsetp)[regi]);
+ regcache_raw_supply (regcache, 2*regi + HPPA_FP0_REGNUM, from);
+ regcache_raw_supply (regcache, 2*regi + HPPA_FP0_REGNUM + 1, from + 4);
}
}
them all. */
void
-fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
+fill_fpregset (const struct regcache *regcache,
+ gdb_fpregset_t *fpregsetp, int regno)
{
int i;
- for (i = 0; i < NUM_REGS; i++)
+ for (i = HPPA_FP0_REGNUM; i < HPPA_FP0_REGNUM + 32 * 2; i++)
{
- if (regno == -1 || regno == i)
- {
- /* Gross. fpregset_t is double, registers[x] has single
- precision reg. */
- char *to = (char *) &((*fpregsetp)[(i - HPPA_FP0_REGNUM) / 2]);
- if ((i - HPPA_FP0_REGNUM) & 1)
- to += 4;
- regcache_collect (i, to);
- }
+ /* Gross. fpregset_t is double, registers[x] has single
+ precision reg. */
+ char *to = (char *) &((*fpregsetp)[(i - HPPA_FP0_REGNUM) / 2]);
+ if ((i - HPPA_FP0_REGNUM) & 1)
+ to += 4;
+ regcache_raw_collect (regcache, i, to);
}
}
+
+void _initialize_hppa_linux_nat (void);
+
+void
+_initialize_hppa_linux_nat (void)
+{
+ struct target_ops *t;
+
+ /* Fill in the generic GNU/Linux methods. */
+ t = linux_target ();
+
+ /* Add our register access methods. */
+ t->to_fetch_registers = hppa_linux_fetch_inferior_registers;
+ t->to_store_registers = hppa_linux_store_inferior_registers;
+
+ /* Register the target. */
+ linux_nat_add_target (t);
+}
projects / deliverable / binutils-gdb.git / blobdiff