/* Native-dependent code for PA-RISC HP-UX.
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2005, 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 "inferior.h"
#include <sys/ptrace.h>
#include <machine/save_state.h>
+#ifdef HAVE_TTRACE
+#include <sys/ttrace.h>
+#endif
+
#include "hppa-tdep.h"
#include "inf-ptrace.h"
+#include "inf-ttrace.h"
-static int hppa_hpux_save_state_offset[] =
-{
- ssoff(ss_flags),
- ssoff(ss_narrow.ss_gr1),
- ssoff(ss_narrow.ss_rp),
- ssoff(ss_narrow.ss_gr3),
- ssoff(ss_narrow.ss_gr4),
- ssoff(ss_narrow.ss_gr5),
- ssoff(ss_narrow.ss_gr6),
- ssoff(ss_narrow.ss_gr7),
- ssoff(ss_narrow.ss_gr8),
- ssoff(ss_narrow.ss_gr9),
- ssoff(ss_narrow.ss_gr10),
- ssoff(ss_narrow.ss_gr11),
- ssoff(ss_narrow.ss_gr12),
- ssoff(ss_narrow.ss_gr13),
- ssoff(ss_narrow.ss_gr14),
- ssoff(ss_narrow.ss_gr15),
- ssoff(ss_narrow.ss_gr16),
- ssoff(ss_narrow.ss_gr17),
- ssoff(ss_narrow.ss_gr18),
- ssoff(ss_narrow.ss_gr19),
- ssoff(ss_narrow.ss_gr20),
- ssoff(ss_narrow.ss_gr21),
- ssoff(ss_narrow.ss_gr22),
- ssoff(ss_narrow.ss_arg3),
- ssoff(ss_narrow.ss_arg2),
- ssoff(ss_narrow.ss_arg1),
- ssoff(ss_narrow.ss_arg0),
- ssoff(ss_narrow.ss_dp),
- ssoff(ss_narrow.ss_ret0),
- ssoff(ss_narrow.ss_ret1),
- ssoff(ss_narrow.ss_sp),
- ssoff(ss_narrow.ss_gr31),
- ssoff(ss_narrow.ss_cr11),
- ssoff(ss_narrow.ss_pcoq_head),
- ssoff(ss_narrow.ss_pcsq_head),
- ssoff(ss_narrow.ss_pcoq_tail),
- ssoff(ss_narrow.ss_pcsq_tail),
- ssoff(ss_narrow.ss_cr15),
- ssoff(ss_narrow.ss_cr19),
- ssoff(ss_narrow.ss_cr20),
- ssoff(ss_narrow.ss_cr21),
- ssoff(ss_narrow.ss_cr22),
- ssoff(ss_narrow.ss_cpustate),
- ssoff(ss_narrow.ss_sr4),
- ssoff(ss_narrow.ss_sr0),
- ssoff(ss_narrow.ss_sr1),
- ssoff(ss_narrow.ss_sr2),
- ssoff(ss_narrow.ss_sr3),
- ssoff(ss_narrow.ss_sr5),
- ssoff(ss_narrow.ss_sr6),
- ssoff(ss_narrow.ss_sr7),
- ssoff(ss_narrow.ss_cr0),
- ssoff(ss_narrow.ss_cr8),
- ssoff(ss_narrow.ss_cr9),
- ssoff(ss_narrow.ss_cr10),
- ssoff(ss_narrow.ss_cr12),
- ssoff(ss_narrow.ss_cr13),
- ssoff(ss_narrow.ss_cr24),
- ssoff(ss_narrow.ss_cr25),
- ssoff(ss_narrow.ss_cr26),
- ssoff(ss_narrow.ss_mpsfu_high),
- ssoff(ss_narrow.ss_mpsfu_low),
- ssoff(ss_narrow.ss_mpsfu_ovflo),
- ssoff(ss_pad),
- ssoff(ss_frstat),
- ssoff(ss_frexcp1),
- ssoff(ss_frexcp2),
- ssoff(ss_frexcp3),
- ssoff(ss_frexcp4),
- ssoff(ss_frexcp5),
- ssoff(ss_frexcp6),
- ssoff(ss_frexcp7),
- ssoff(ss_fr4_hi),
- ssoff(ss_fr4_lo),
- ssoff(ss_fr5_hi),
- ssoff(ss_fr5_lo),
- ssoff(ss_fr6_hi),
- ssoff(ss_fr6_lo),
- ssoff(ss_fr7_hi),
- ssoff(ss_fr7_lo),
- ssoff(ss_fr8_hi),
- ssoff(ss_fr8_lo),
- ssoff(ss_fr9_hi),
- ssoff(ss_fr9_lo),
- ssoff(ss_fr10_hi),
- ssoff(ss_fr10_lo),
- ssoff(ss_fr11_hi),
- ssoff(ss_fr11_lo),
- ssoff(ss_fr12_hi),
- ssoff(ss_fr12_lo),
- ssoff(ss_fr13_hi),
- ssoff(ss_fr13_lo),
- ssoff(ss_fr14_hi),
- ssoff(ss_fr14_lo),
- ssoff(ss_fr15_hi),
- ssoff(ss_fr15_lo),
- ssoff(ss_fr16_hi),
- ssoff(ss_fr16_lo),
- ssoff(ss_fr17_hi),
- ssoff(ss_fr17_lo),
- ssoff(ss_fr18_hi),
- ssoff(ss_fr18_lo),
- ssoff(ss_fr19_hi),
- ssoff(ss_fr19_lo),
- ssoff(ss_fr20_hi),
- ssoff(ss_fr20_lo),
- ssoff(ss_fr21_hi),
- ssoff(ss_fr21_lo),
- ssoff(ss_fr22_hi),
- ssoff(ss_fr22_lo),
- ssoff(ss_fr23_hi),
- ssoff(ss_fr23_lo),
- ssoff(ss_fr24_hi),
- ssoff(ss_fr24_lo),
- ssoff(ss_fr25_hi),
- ssoff(ss_fr25_lo),
- ssoff(ss_fr26_hi),
- ssoff(ss_fr26_lo),
- ssoff(ss_fr27_hi),
- ssoff(ss_fr27_lo),
- ssoff(ss_fr28_hi),
- ssoff(ss_fr28_lo),
- ssoff(ss_fr29_hi),
- ssoff(ss_fr29_lo),
- ssoff(ss_fr30_hi),
- ssoff(ss_fr30_lo),
- ssoff(ss_fr31_hi),
- ssoff(ss_fr31_lo)
-};
+/* Non-zero if we should pretend not to be a runnable target. */
+int child_suppress_run = 0;
-static int
-hppa_hpux_cannot_fetch_register (int regnum)
-{
- gdb_assert (regnum >= 0 && regnum < NUM_REGS);
- return (regnum >= ARRAY_SIZE(hppa_hpux_save_state_offset));
-}
+/* Return the offset of register REGNUM within `struct save_state'.
+ The offset returns depends on the flags in the "flags" register and
+ the register size (32-bit or 64-bit). These are taken from
+ REGCACHE. */
-static int
-hppa_hpux_cannot_store_register (int regnum)
+LONGEST
+hppa_hpux_save_state_offset (struct regcache *regcache, int regnum)
{
- return hppa_hpux_cannot_fetch_register (regnum);
+ LONGEST offset;
+
+ if (regnum == HPPA_FLAGS_REGNUM)
+ return ssoff (ss_flags);
+
+ if (HPPA_R0_REGNUM < regnum && regnum < HPPA_FP0_REGNUM)
+ {
+ struct gdbarch *arch = get_regcache_arch (regcache);
+ size_t size = register_size (arch, HPPA_R1_REGNUM);
+ ULONGEST flags;
+
+ gdb_assert (size == 4 || size == 8);
+
+ regcache_cooked_read_unsigned (regcache, HPPA_FLAGS_REGNUM, &flags);
+ if (flags & SS_WIDEREGS)
+ offset = ssoff (ss_wide) + (8 - size) + (regnum - HPPA_R0_REGNUM) * 8;
+ else
+ offset = ssoff (ss_narrow) + (regnum - HPPA_R1_REGNUM) * 4;
+ }
+ else
+ {
+ struct gdbarch *arch = get_regcache_arch (regcache);
+ size_t size = register_size (arch, HPPA_FP0_REGNUM);
+
+ gdb_assert (size == 4 || size == 8);
+ gdb_assert (regnum >= HPPA_FP0_REGNUM);
+ offset = ssoff(ss_fpblock) + (regnum - HPPA_FP0_REGNUM) * size;
+ }
+
+ gdb_assert (offset < sizeof (save_state_t));
+ return offset;
}
+/* Just in case a future version of PA-RISC HP-UX won't have ptrace(2)
+ at all. */
+#ifndef PTRACE_TYPE_RET
+#define PTRACE_TYPE_RET void
+#endif
+
static void
-hppa_hpux_fetch_register (int regnum)
+hppa_hpux_fetch_register (struct regcache *regcache, int regnum)
{
CORE_ADDR addr;
size_t size;
pid_t pid;
int i;
- if (hppa_hpux_cannot_fetch_register (regnum))
- {
- regcache_raw_supply (current_regcache, regnum, NULL);
- return;
- }
+ pid = ptid_get_pid (inferior_ptid);
- pid = PIDGET (inferior_ptid);
-
- /* This isn't really an address. But ptrace thinks of it as one. */
- addr = hppa_hpux_save_state_offset[regnum];
+ /* This isn't really an address, but ptrace thinks of it as one. */
+ addr = hppa_hpux_save_state_offset (regcache, regnum);
size = register_size (current_gdbarch, regnum);
- gdb_assert ((size % sizeof (PTRACE_TYPE_RET)) == 0);
+ gdb_assert (size == 4 || size == 8);
buf = alloca (size);
- /* Read the register contents from the inferior a chuck at the time. */
- for (i = 0; i < size / sizeof (PTRACE_TYPE_RET); i++)
+#ifdef HAVE_TTRACE
+ {
+ lwpid_t lwp = ptid_get_lwp (inferior_ptid);
+
+ if (ttrace (TT_LWP_RUREGS, pid, lwp, addr, size, (uintptr_t)buf) == -1)
+ error (_("Couldn't read register %s (#%d): %s"),
+ gdbarch_register_name (current_gdbarch, regnum),
+ regnum, safe_strerror (errno));
+ }
+#else
+ {
+ int i;
+
+ /* Read the register contents from the inferior a chuck at the time. */
+ for (i = 0; i < size / sizeof (PTRACE_TYPE_RET); i++)
+ {
+ errno = 0;
+ buf[i] = ptrace (PT_RUREGS, pid, (PTRACE_TYPE_ARG3) addr, 0, 0);
+ if (errno != 0)
+ error (_("Couldn't read register %s (#%d): %s"),
+ gdbarch_register_name (current_gdbarch, regnum),
+ regnum, safe_strerror (errno));
+
+ addr += sizeof (PTRACE_TYPE_RET);
+ }
+ }
+#endif
+
+ /* Take care with the "flags" register. It's stored as an `int' in
+ `struct save_state', even for 64-bit code. */
+ if (regnum == HPPA_FLAGS_REGNUM && size == 8)
{
- errno = 0;
- buf[i] = ptrace (PT_RUREGS, pid, (PTRACE_TYPE_ARG3) addr, 0, 0);
- if (errno != 0)
- error ("Couldn't read register %s (#%d): %s.", REGISTER_NAME (regnum),
- regnum, safe_strerror (errno));
-
- addr += sizeof (PTRACE_TYPE_RET);
+ ULONGEST flags = extract_unsigned_integer ((gdb_byte *)buf, 4);
+ store_unsigned_integer ((gdb_byte *)buf, 8, flags);
}
- regcache_raw_supply (current_regcache, regnum, buf);
+
+ regcache_raw_supply (regcache, regnum, buf);
}
static void
-hppa_hpux_fetch_inferior_registers (int regnum)
+hppa_hpux_fetch_inferior_registers (struct regcache *regcache, int regnum)
{
if (regnum == -1)
- for (regnum = 0; regnum < NUM_REGS; regnum++)
- hppa_hpux_fetch_register (regnum);
+ for (regnum = 0; regnum < gdbarch_num_regs (current_gdbarch); regnum++)
+ hppa_hpux_fetch_register (regcache, regnum);
else
- hppa_hpux_fetch_register (regnum);
+ hppa_hpux_fetch_register (regcache, regnum);
}
/* Store register REGNUM into the inferior. */
static void
-hppa_hpux_store_register (int regnum)
+hppa_hpux_store_register (struct regcache *regcache, int regnum)
{
CORE_ADDR addr;
size_t size;
PTRACE_TYPE_RET *buf;
pid_t pid;
- int i;
- if (hppa_hpux_cannot_store_register (regnum))
- return;
+ pid = ptid_get_pid (inferior_ptid);
- pid = PIDGET (inferior_ptid);
-
- /* This isn't really an address. But ptrace thinks of it as one. */
- addr = hppa_hpux_save_state_offset[regnum];
+ /* This isn't really an address, but ptrace thinks of it as one. */
+ addr = hppa_hpux_save_state_offset (regcache, regnum);
size = register_size (current_gdbarch, regnum);
- gdb_assert ((size % sizeof (PTRACE_TYPE_RET)) == 0);
+ gdb_assert (size == 4 || size == 8);
buf = alloca (size);
- /* Write the register contents into the inferior a chunk at the time. */
- regcache_raw_collect (current_regcache, regnum, buf);
- for (i = 0; i < size / sizeof (PTRACE_TYPE_RET); i++)
- {
- errno = 0;
- ptrace (PT_WUREGS, pid, (PTRACE_TYPE_ARG3) addr, buf[i], 0);
- if (errno != 0)
- error ("Couldn't write register %s (#%d): %s.", REGISTER_NAME (regnum),
- regnum, safe_strerror (errno));
+ regcache_raw_collect (regcache, regnum, buf);
- addr += sizeof (PTRACE_TYPE_RET);
+ /* Take care with the "flags" register. It's stored as an `int' in
+ `struct save_state', even for 64-bit code. */
+ if (regnum == HPPA_FLAGS_REGNUM && size == 8)
+ {
+ ULONGEST flags = extract_unsigned_integer ((gdb_byte *)buf, 8);
+ store_unsigned_integer ((gdb_byte *)buf, 4, flags);
+ size = 4;
}
+
+#ifdef HAVE_TTRACE
+ {
+ lwpid_t lwp = ptid_get_lwp (inferior_ptid);
+
+ if (ttrace (TT_LWP_WUREGS, pid, lwp, addr, size, (uintptr_t)buf) == -1)
+ error (_("Couldn't write register %s (#%d): %s"),
+ gdbarch_register_name (current_gdbarch, regnum),
+ regnum, safe_strerror (errno));
+ }
+#else
+ {
+ int i;
+
+ /* Write the register contents into the inferior a chunk at the time. */
+ for (i = 0; i < size / sizeof (PTRACE_TYPE_RET); i++)
+ {
+ errno = 0;
+ ptrace (PT_WUREGS, pid, (PTRACE_TYPE_ARG3) addr, buf[i], 0);
+ if (errno != 0)
+ error (_("Couldn't write register %s (#%d): %s"),
+ gdbarch_register_name (current_gdbarch, regnum),
+ regnum, safe_strerror (errno));
+
+ addr += sizeof (PTRACE_TYPE_RET);
+ }
+ }
+#endif
}
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers (including the floating point registers). */
static void
-hppa_hpux_store_inferior_registers (int regnum)
+hppa_hpux_store_inferior_registers (struct regcache *regcache, int regnum)
{
if (regnum == -1)
- for (regnum = 0; regnum < NUM_REGS; regnum++)
- hppa_hpux_store_register (regnum);
+ for (regnum = 0; regnum < gdbarch_num_regs (current_gdbarch); regnum++)
+ hppa_hpux_store_register (regcache, regnum);
else
- hppa_hpux_store_register (regnum);
+ hppa_hpux_store_register (regcache, regnum);
+}
+
+static int
+hppa_hpux_child_can_run (void)
+{
+ /* This variable is controlled by modules that layer their own
+ process structure atop that provided here. The code in
+ hpux-thread.c does this to support the HP-UX user-mode DCE
+ threads. */
+ return !child_suppress_run;
}
\f
{
struct target_ops *t;
+#ifdef HAVE_TTRACE
+ t = inf_ttrace_target ();
+#else
t = inf_ptrace_target ();
+#endif
+
t->to_fetch_registers = hppa_hpux_fetch_inferior_registers;
t->to_store_registers = hppa_hpux_store_inferior_registers;
+ t->to_can_run = hppa_hpux_child_can_run;
+
add_target (t);
}