358 lines
8.7 KiB
C
358 lines
8.7 KiB
C
/* Native-dependent code for PA-RISC HP-UX.
|
||
|
||
Copyright 2004 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
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. */
|
||
|
||
#include "defs.h"
|
||
#include "inferior.h"
|
||
#include "regcache.h"
|
||
#include "target.h"
|
||
|
||
#include "gdb_assert.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"
|
||
|
||
/* HP-UX 10.20 has a different name than HP-UX 11.00 and later.
|
||
Apparently, the intended usage changed. Unfortunately HP didn't
|
||
care about backwards compatibility. */
|
||
#ifdef ss_tlsp
|
||
#define ss_mpsfu_high ss_tlsp
|
||
#endif
|
||
|
||
int child_suppress_run = 0; /* Non-zero if we should pretend not to be
|
||
a runnable target. */
|
||
|
||
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)
|
||
};
|
||
|
||
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));
|
||
}
|
||
|
||
static int
|
||
hppa_hpux_cannot_store_register (int regnum)
|
||
{
|
||
return hppa_hpux_cannot_fetch_register (regnum);
|
||
}
|
||
|
||
/* 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)
|
||
{
|
||
CORE_ADDR addr;
|
||
size_t size;
|
||
PTRACE_TYPE_RET *buf;
|
||
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);
|
||
|
||
/* This isn't really an address. But ptrace thinks of it as one. */
|
||
addr = hppa_hpux_save_state_offset[regnum];
|
||
size = register_size (current_gdbarch, regnum);
|
||
|
||
gdb_assert (size == 4 || size == 8);
|
||
buf = alloca (size);
|
||
|
||
#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",
|
||
REGISTER_NAME (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",
|
||
REGISTER_NAME (regnum), regnum, safe_strerror (errno));
|
||
|
||
addr += sizeof (PTRACE_TYPE_RET);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
regcache_raw_supply (current_regcache, regnum, buf);
|
||
}
|
||
|
||
static void
|
||
hppa_hpux_fetch_inferior_registers (int regnum)
|
||
{
|
||
if (regnum == -1)
|
||
for (regnum = 0; regnum < NUM_REGS; regnum++)
|
||
hppa_hpux_fetch_register (regnum);
|
||
else
|
||
hppa_hpux_fetch_register (regnum);
|
||
}
|
||
|
||
/* Store register REGNUM into the inferior. */
|
||
|
||
static void
|
||
hppa_hpux_store_register (int regnum)
|
||
{
|
||
CORE_ADDR addr;
|
||
size_t size;
|
||
PTRACE_TYPE_RET *buf;
|
||
pid_t pid;
|
||
|
||
if (hppa_hpux_cannot_store_register (regnum))
|
||
return;
|
||
|
||
pid = ptid_get_pid (inferior_ptid);
|
||
|
||
/* This isn't really an address. But ptrace thinks of it as one. */
|
||
addr = hppa_hpux_save_state_offset[regnum];
|
||
size = register_size (current_gdbarch, regnum);
|
||
|
||
gdb_assert (size == 4 || size == 8);
|
||
buf = alloca (size);
|
||
|
||
regcache_raw_collect (current_regcache, regnum, buf);
|
||
|
||
#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",
|
||
REGISTER_NAME (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",
|
||
REGISTER_NAME (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)
|
||
{
|
||
if (regnum == -1)
|
||
for (regnum = 0; regnum < NUM_REGS; regnum++)
|
||
hppa_hpux_store_register (regnum);
|
||
else
|
||
hppa_hpux_store_register (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. hpux-thread.c does this because
|
||
of the HP-UX user-mode level thread model. */
|
||
|
||
return !child_suppress_run;
|
||
}
|
||
|
||
|
||
/* Prevent warning from -Wmissing-prototypes. */
|
||
void _initialize_hppa_hpux_nat (void);
|
||
|
||
void
|
||
_initialize_hppa_hpux_nat (void)
|
||
{
|
||
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);
|
||
}
|