/* PPC GNU/Linux native support.
Copyright (C) 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002, 2003,
- 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2004, 2005, 2006, 2007, 2008 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdb_string.h"
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
#include "ppc-tdep.h"
+#include "ppc-linux-tdep.h"
+
+/* This sometimes isn't defined. */
+#ifndef PT_ORIG_R3
+#define PT_ORIG_R3 34
+#endif
+#ifndef PT_TRAP
+#define PT_TRAP 40
+#endif
/* Glibc's headers don't define PTRACE_GETVRREGS so we cannot use a
configure time check. Some older glibc's (for instance 2.2.1)
error. */
int have_ptrace_getvrregs = 1;
-static CORE_ADDR last_stopped_data_address = 0;
-
/* Non-zero if our kernel may support the PTRACE_GETEVRREGS and
PTRACE_SETEVRREGS requests, for reading and writing the SPE
registers. Zero if we've tried one of them and gotten an
/* *INDENT_ON * */
static int
-ppc_register_u_addr (int regno)
+ppc_register_u_addr (struct gdbarch *gdbarch, int regno)
{
int u_addr = -1;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* NOTE: cagney/2003-11-25: This is the word size used by the ptrace
interface, and not the wordsize of the program's ABI. */
int wordsize = sizeof (long);
u_addr = (PT_FPR0 * wordsize) + ((regno - tdep->ppc_fp0_regnum) * 8);
/* UISA special purpose registers: 1 slot each */
- if (regno == PC_REGNUM)
+ if (regno == gdbarch_pc_regnum (gdbarch))
u_addr = PT_NIP * wordsize;
if (regno == tdep->ppc_lr_regnum)
u_addr = PT_LNK * wordsize;
#endif
if (regno == tdep->ppc_ps_regnum)
u_addr = PT_MSR * wordsize;
+ if (regno == PPC_ORIG_R3_REGNUM)
+ u_addr = PT_ORIG_R3 * wordsize;
+ if (regno == PPC_TRAP_REGNUM)
+ u_addr = PT_TRAP * wordsize;
if (tdep->ppc_fpscr_regnum >= 0
&& regno == tdep->ppc_fpscr_regnum)
{
registers set mechanism, as opposed to the interface for all the
other registers, that stores/fetches each register individually. */
static void
-fetch_altivec_register (int tid, int regno)
+fetch_altivec_register (struct regcache *regcache, int tid, int regno)
{
int ret;
int offset = 0;
gdb_vrregset_t regs;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- int vrregsize = register_size (current_gdbarch, tdep->ppc_vr0_regnum);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
if (ret < 0)
vector. VRSAVE is at the end of the array in a 4 bytes slot, so
there is no need to define an offset for it. */
if (regno == (tdep->ppc_vrsave_regnum - 1))
- offset = vrregsize - register_size (current_gdbarch, tdep->ppc_vrsave_regnum);
+ offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
- regcache_raw_supply (current_regcache, regno,
+ regcache_raw_supply (regcache, regno,
regs + (regno - tdep->ppc_vr0_regnum) * vrregsize + offset);
}
be the number of an upper half register, acc, spefscr, or -1 to
supply the values of all registers. */
static void
-fetch_spe_register (int tid, int regno)
+fetch_spe_register (struct regcache *regcache, int tid, int regno)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
struct gdb_evrregset_t evrregs;
gdb_assert (sizeof (evrregs.evr[0])
- == register_size (current_gdbarch, tdep->ppc_ev0_upper_regnum));
+ == register_size (gdbarch, tdep->ppc_ev0_upper_regnum));
gdb_assert (sizeof (evrregs.acc)
- == register_size (current_gdbarch, tdep->ppc_acc_regnum));
+ == register_size (gdbarch, tdep->ppc_acc_regnum));
gdb_assert (sizeof (evrregs.spefscr)
- == register_size (current_gdbarch, tdep->ppc_spefscr_regnum));
+ == register_size (gdbarch, tdep->ppc_spefscr_regnum));
get_spe_registers (tid, &evrregs);
int i;
for (i = 0; i < ppc_num_gprs; i++)
- regcache_raw_supply (current_regcache, tdep->ppc_ev0_upper_regnum + i,
+ regcache_raw_supply (regcache, tdep->ppc_ev0_upper_regnum + i,
&evrregs.evr[i]);
}
else if (tdep->ppc_ev0_upper_regnum <= regno
&& regno < tdep->ppc_ev0_upper_regnum + ppc_num_gprs)
- regcache_raw_supply (current_regcache, regno,
+ regcache_raw_supply (regcache, regno,
&evrregs.evr[regno - tdep->ppc_ev0_upper_regnum]);
if (regno == -1
|| regno == tdep->ppc_acc_regnum)
- regcache_raw_supply (current_regcache, tdep->ppc_acc_regnum, &evrregs.acc);
+ regcache_raw_supply (regcache, tdep->ppc_acc_regnum, &evrregs.acc);
if (regno == -1
|| regno == tdep->ppc_spefscr_regnum)
- regcache_raw_supply (current_regcache, tdep->ppc_spefscr_regnum,
+ regcache_raw_supply (regcache, tdep->ppc_spefscr_regnum,
&evrregs.spefscr);
}
static void
-fetch_register (int tid, int regno)
+fetch_register (struct regcache *regcache, int tid, int regno)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* This isn't really an address. But ptrace thinks of it as one. */
- CORE_ADDR regaddr = ppc_register_u_addr (regno);
+ CORE_ADDR regaddr = ppc_register_u_addr (gdbarch, regno);
int bytes_transferred;
unsigned int offset; /* Offset of registers within the u area. */
char buf[MAX_REGISTER_SIZE];
- if (altivec_register_p (regno))
+ if (altivec_register_p (gdbarch, regno))
{
/* If this is the first time through, or if it is not the first
time through, and we have comfirmed that there is kernel
register. */
if (have_ptrace_getvrregs)
{
- fetch_altivec_register (tid, regno);
+ fetch_altivec_register (regcache, tid, regno);
return;
}
/* If we have discovered that there is no ptrace support for
AltiVec registers, fall through and return zeroes, because
regaddr will be -1 in this case. */
}
- else if (spe_register_p (regno))
+ else if (spe_register_p (gdbarch, regno))
{
- fetch_spe_register (tid, regno);
+ fetch_spe_register (regcache, tid, regno);
return;
}
if (regaddr == -1)
{
- memset (buf, '\0', register_size (current_gdbarch, regno)); /* Supply zeroes */
- regcache_raw_supply (current_regcache, regno, buf);
+ memset (buf, '\0', register_size (gdbarch, regno)); /* Supply zeroes */
+ regcache_raw_supply (regcache, regno, buf);
return;
}
32-bit platform, 64-bit floating-point registers will require two
transfers. */
for (bytes_transferred = 0;
- bytes_transferred < register_size (current_gdbarch, regno);
+ bytes_transferred < register_size (gdbarch, regno);
bytes_transferred += sizeof (long))
{
errno = 0;
{
char message[128];
sprintf (message, "reading register %s (#%d)",
- REGISTER_NAME (regno), regno);
+ gdbarch_register_name (gdbarch, regno), regno);
perror_with_name (message);
}
}
/* Now supply the register. Keep in mind that the regcache's idea
of the register's size may not be a multiple of sizeof
(long). */
- if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_LITTLE)
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
{
/* Little-endian values are always found at the left end of the
bytes transferred. */
- regcache_raw_supply (current_regcache, regno, buf);
+ regcache_raw_supply (regcache, regno, buf);
}
- else if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG)
+ else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
{
/* Big-endian values are found at the right end of the bytes
transferred. */
- size_t padding = (bytes_transferred
- - register_size (current_gdbarch, regno));
- regcache_raw_supply (current_regcache, regno, buf + padding);
+ size_t padding = (bytes_transferred - register_size (gdbarch, regno));
+ regcache_raw_supply (regcache, regno, buf + padding);
}
else
internal_error (__FILE__, __LINE__,
_("fetch_register: unexpected byte order: %d"),
- gdbarch_byte_order (current_gdbarch));
+ gdbarch_byte_order (gdbarch));
}
static void
-supply_vrregset (gdb_vrregset_t *vrregsetp)
+supply_vrregset (struct regcache *regcache, gdb_vrregset_t *vrregsetp)
{
int i;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int num_of_vrregs = tdep->ppc_vrsave_regnum - tdep->ppc_vr0_regnum + 1;
- int vrregsize = register_size (current_gdbarch, tdep->ppc_vr0_regnum);
- int offset = vrregsize - register_size (current_gdbarch, tdep->ppc_vrsave_regnum);
+ int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
+ int offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
for (i = 0; i < num_of_vrregs; i++)
{
occupies a whole vector, while VRSAVE occupies a full 4 bytes
slot. */
if (i == (num_of_vrregs - 2))
- regcache_raw_supply (current_regcache, tdep->ppc_vr0_regnum + i,
+ regcache_raw_supply (regcache, tdep->ppc_vr0_regnum + i,
*vrregsetp + i * vrregsize + offset);
else
- regcache_raw_supply (current_regcache, tdep->ppc_vr0_regnum + i,
+ regcache_raw_supply (regcache, tdep->ppc_vr0_regnum + i,
*vrregsetp + i * vrregsize);
}
}
static void
-fetch_altivec_registers (int tid)
+fetch_altivec_registers (struct regcache *regcache, int tid)
{
int ret;
gdb_vrregset_t regs;
}
perror_with_name (_("Unable to fetch AltiVec registers"));
}
- supply_vrregset (®s);
+ supply_vrregset (regcache, ®s);
}
static void
-fetch_ppc_registers (int tid)
+fetch_ppc_registers (struct regcache *regcache, int tid)
{
int i;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
for (i = 0; i < ppc_num_gprs; i++)
- fetch_register (tid, tdep->ppc_gp0_regnum + i);
+ fetch_register (regcache, tid, tdep->ppc_gp0_regnum + i);
if (tdep->ppc_fp0_regnum >= 0)
for (i = 0; i < ppc_num_fprs; i++)
- fetch_register (tid, tdep->ppc_fp0_regnum + i);
- fetch_register (tid, PC_REGNUM);
+ fetch_register (regcache, tid, tdep->ppc_fp0_regnum + i);
+ fetch_register (regcache, tid, gdbarch_pc_regnum (gdbarch));
if (tdep->ppc_ps_regnum != -1)
- fetch_register (tid, tdep->ppc_ps_regnum);
+ fetch_register (regcache, tid, tdep->ppc_ps_regnum);
if (tdep->ppc_cr_regnum != -1)
- fetch_register (tid, tdep->ppc_cr_regnum);
+ fetch_register (regcache, tid, tdep->ppc_cr_regnum);
if (tdep->ppc_lr_regnum != -1)
- fetch_register (tid, tdep->ppc_lr_regnum);
+ fetch_register (regcache, tid, tdep->ppc_lr_regnum);
if (tdep->ppc_ctr_regnum != -1)
- fetch_register (tid, tdep->ppc_ctr_regnum);
+ fetch_register (regcache, tid, tdep->ppc_ctr_regnum);
if (tdep->ppc_xer_regnum != -1)
- fetch_register (tid, tdep->ppc_xer_regnum);
+ fetch_register (regcache, tid, tdep->ppc_xer_regnum);
if (tdep->ppc_mq_regnum != -1)
- fetch_register (tid, tdep->ppc_mq_regnum);
+ fetch_register (regcache, tid, tdep->ppc_mq_regnum);
+ if (ppc_linux_trap_reg_p (gdbarch))
+ {
+ fetch_register (regcache, tid, PPC_ORIG_R3_REGNUM);
+ fetch_register (regcache, tid, PPC_TRAP_REGNUM);
+ }
if (tdep->ppc_fpscr_regnum != -1)
- fetch_register (tid, tdep->ppc_fpscr_regnum);
+ fetch_register (regcache, tid, tdep->ppc_fpscr_regnum);
if (have_ptrace_getvrregs)
if (tdep->ppc_vr0_regnum != -1 && tdep->ppc_vrsave_regnum != -1)
- fetch_altivec_registers (tid);
+ fetch_altivec_registers (regcache, tid);
if (tdep->ppc_ev0_upper_regnum >= 0)
- fetch_spe_register (tid, -1);
+ fetch_spe_register (regcache, tid, -1);
}
/* 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
-ppc_linux_fetch_inferior_registers (int regno)
+ppc_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
{
/* Overload thread id onto process id */
int tid = TIDGET (inferior_ptid);
tid = PIDGET (inferior_ptid);
if (regno == -1)
- fetch_ppc_registers (tid);
+ fetch_ppc_registers (regcache, tid);
else
- fetch_register (tid, regno);
+ fetch_register (regcache, tid, regno);
}
/* Store one register. */
static void
-store_altivec_register (int tid, int regno)
+store_altivec_register (const struct regcache *regcache, int tid, int regno)
{
int ret;
int offset = 0;
gdb_vrregset_t regs;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- int vrregsize = register_size (current_gdbarch, tdep->ppc_vr0_regnum);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
ret = ptrace (PTRACE_GETVRREGS, tid, 0, ®s);
if (ret < 0)
/* VSCR is fetched as a 16 bytes quantity, but it is really 4 bytes
long on the hardware. */
if (regno == (tdep->ppc_vrsave_regnum - 1))
- offset = vrregsize - register_size (current_gdbarch, tdep->ppc_vrsave_regnum);
+ offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
- regcache_raw_collect (current_regcache, regno,
+ regcache_raw_collect (regcache, regno,
regs + (regno - tdep->ppc_vr0_regnum) * vrregsize + offset);
ret = ptrace (PTRACE_SETVRREGS, tid, 0, ®s);
If REGNO is -1, write the values of all the SPE-specific
registers. */
static void
-store_spe_register (int tid, int regno)
+store_spe_register (const struct regcache *regcache, int tid, int regno)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
struct gdb_evrregset_t evrregs;
gdb_assert (sizeof (evrregs.evr[0])
- == register_size (current_gdbarch, tdep->ppc_ev0_upper_regnum));
+ == register_size (gdbarch, tdep->ppc_ev0_upper_regnum));
gdb_assert (sizeof (evrregs.acc)
- == register_size (current_gdbarch, tdep->ppc_acc_regnum));
+ == register_size (gdbarch, tdep->ppc_acc_regnum));
gdb_assert (sizeof (evrregs.spefscr)
- == register_size (current_gdbarch, tdep->ppc_spefscr_regnum));
+ == register_size (gdbarch, tdep->ppc_spefscr_regnum));
if (regno == -1)
/* Since we're going to write out every register, the code below
int i;
for (i = 0; i < ppc_num_gprs; i++)
- regcache_raw_collect (current_regcache,
+ regcache_raw_collect (regcache,
tdep->ppc_ev0_upper_regnum + i,
&evrregs.evr[i]);
}
else if (tdep->ppc_ev0_upper_regnum <= regno
&& regno < tdep->ppc_ev0_upper_regnum + ppc_num_gprs)
- regcache_raw_collect (current_regcache, regno,
+ regcache_raw_collect (regcache, regno,
&evrregs.evr[regno - tdep->ppc_ev0_upper_regnum]);
if (regno == -1
|| regno == tdep->ppc_acc_regnum)
- regcache_raw_collect (current_regcache,
+ regcache_raw_collect (regcache,
tdep->ppc_acc_regnum,
&evrregs.acc);
if (regno == -1
|| regno == tdep->ppc_spefscr_regnum)
- regcache_raw_collect (current_regcache,
+ regcache_raw_collect (regcache,
tdep->ppc_spefscr_regnum,
&evrregs.spefscr);
}
static void
-store_register (int tid, int regno)
+store_register (const struct regcache *regcache, int tid, int regno)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* This isn't really an address. But ptrace thinks of it as one. */
- CORE_ADDR regaddr = ppc_register_u_addr (regno);
+ CORE_ADDR regaddr = ppc_register_u_addr (gdbarch, regno);
int i;
size_t bytes_to_transfer;
char buf[MAX_REGISTER_SIZE];
- if (altivec_register_p (regno))
+ if (altivec_register_p (gdbarch, regno))
{
- store_altivec_register (tid, regno);
+ store_altivec_register (regcache, tid, regno);
return;
}
- else if (spe_register_p (regno))
+ else if (spe_register_p (gdbarch, regno))
{
- store_spe_register (tid, regno);
+ store_spe_register (regcache, tid, regno);
return;
}
idea of the register's size may not be a multiple of sizeof
(long). */
memset (buf, 0, sizeof buf);
- bytes_to_transfer = align_up (register_size (current_gdbarch, regno),
- sizeof (long));
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE)
+ bytes_to_transfer = align_up (register_size (gdbarch, regno), sizeof (long));
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
{
/* Little-endian values always sit at the left end of the buffer. */
- regcache_raw_collect (current_regcache, regno, buf);
+ regcache_raw_collect (regcache, regno, buf);
}
- else if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
+ else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
{
/* Big-endian values sit at the right end of the buffer. */
- size_t padding = (bytes_to_transfer
- - register_size (current_gdbarch, regno));
- regcache_raw_collect (current_regcache, regno, buf + padding);
+ size_t padding = (bytes_to_transfer - register_size (gdbarch, regno));
+ regcache_raw_collect (regcache, regno, buf + padding);
}
for (i = 0; i < bytes_to_transfer; i += sizeof (long))
regaddr += sizeof (long);
if (errno == EIO
- && regno == tdep->ppc_fpscr_regnum)
+ && (regno == tdep->ppc_fpscr_regnum
+ || regno == PPC_ORIG_R3_REGNUM
+ || regno == PPC_TRAP_REGNUM))
{
- /* Some older kernel versions don't allow fpscr to be written. */
+ /* Some older kernel versions don't allow fpscr, orig_r3
+ or trap to be written. */
continue;
}
{
char message[128];
sprintf (message, "writing register %s (#%d)",
- REGISTER_NAME (regno), regno);
+ gdbarch_register_name (gdbarch, regno), regno);
perror_with_name (message);
}
}
}
static void
-fill_vrregset (gdb_vrregset_t *vrregsetp)
+fill_vrregset (const struct regcache *regcache, gdb_vrregset_t *vrregsetp)
{
int i;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int num_of_vrregs = tdep->ppc_vrsave_regnum - tdep->ppc_vr0_regnum + 1;
- int vrregsize = register_size (current_gdbarch, tdep->ppc_vr0_regnum);
- int offset = vrregsize - register_size (current_gdbarch, tdep->ppc_vrsave_regnum);
+ int vrregsize = register_size (gdbarch, tdep->ppc_vr0_regnum);
+ int offset = vrregsize - register_size (gdbarch, tdep->ppc_vrsave_regnum);
for (i = 0; i < num_of_vrregs; i++)
{
/* The last 2 registers of this set are only 32 bit long, not
128, but only VSCR is fetched as a 16 bytes quantity. */
if (i == (num_of_vrregs - 2))
- regcache_raw_collect (current_regcache, tdep->ppc_vr0_regnum + i,
+ regcache_raw_collect (regcache, tdep->ppc_vr0_regnum + i,
*vrregsetp + i * vrregsize + offset);
else
- regcache_raw_collect (current_regcache, tdep->ppc_vr0_regnum + i,
+ regcache_raw_collect (regcache, tdep->ppc_vr0_regnum + i,
*vrregsetp + i * vrregsize);
}
}
static void
-store_altivec_registers (int tid)
+store_altivec_registers (const struct regcache *regcache, int tid)
{
int ret;
gdb_vrregset_t regs;
perror_with_name (_("Couldn't get AltiVec registers"));
}
- fill_vrregset (®s);
+ fill_vrregset (regcache, ®s);
if (ptrace (PTRACE_SETVRREGS, tid, 0, ®s) < 0)
perror_with_name (_("Couldn't write AltiVec registers"));
}
static void
-store_ppc_registers (int tid)
+store_ppc_registers (const struct regcache *regcache, int tid)
{
int i;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
for (i = 0; i < ppc_num_gprs; i++)
- store_register (tid, tdep->ppc_gp0_regnum + i);
+ store_register (regcache, tid, tdep->ppc_gp0_regnum + i);
if (tdep->ppc_fp0_regnum >= 0)
for (i = 0; i < ppc_num_fprs; i++)
- store_register (tid, tdep->ppc_fp0_regnum + i);
- store_register (tid, PC_REGNUM);
+ store_register (regcache, tid, tdep->ppc_fp0_regnum + i);
+ store_register (regcache, tid, gdbarch_pc_regnum (gdbarch));
if (tdep->ppc_ps_regnum != -1)
- store_register (tid, tdep->ppc_ps_regnum);
+ store_register (regcache, tid, tdep->ppc_ps_regnum);
if (tdep->ppc_cr_regnum != -1)
- store_register (tid, tdep->ppc_cr_regnum);
+ store_register (regcache, tid, tdep->ppc_cr_regnum);
if (tdep->ppc_lr_regnum != -1)
- store_register (tid, tdep->ppc_lr_regnum);
+ store_register (regcache, tid, tdep->ppc_lr_regnum);
if (tdep->ppc_ctr_regnum != -1)
- store_register (tid, tdep->ppc_ctr_regnum);
+ store_register (regcache, tid, tdep->ppc_ctr_regnum);
if (tdep->ppc_xer_regnum != -1)
- store_register (tid, tdep->ppc_xer_regnum);
+ store_register (regcache, tid, tdep->ppc_xer_regnum);
if (tdep->ppc_mq_regnum != -1)
- store_register (tid, tdep->ppc_mq_regnum);
+ store_register (regcache, tid, tdep->ppc_mq_regnum);
if (tdep->ppc_fpscr_regnum != -1)
- store_register (tid, tdep->ppc_fpscr_regnum);
+ store_register (regcache, tid, tdep->ppc_fpscr_regnum);
+ if (ppc_linux_trap_reg_p (gdbarch))
+ {
+ store_register (regcache, tid, PPC_ORIG_R3_REGNUM);
+ store_register (regcache, tid, PPC_TRAP_REGNUM);
+ }
if (have_ptrace_getvrregs)
if (tdep->ppc_vr0_regnum != -1 && tdep->ppc_vrsave_regnum != -1)
- store_altivec_registers (tid);
+ store_altivec_registers (regcache, tid);
if (tdep->ppc_ev0_upper_regnum >= 0)
- store_spe_register (tid, -1);
+ store_spe_register (regcache, tid, -1);
}
static int
return 1;
}
+/* The cached DABR value, to install in new threads. */
+static long saved_dabr_value;
+
/* Set a watchpoint of type TYPE at address ADDR. */
static int
ppc_linux_insert_watchpoint (CORE_ADDR addr, int len, int rw)
{
- int tid;
+ struct lwp_info *lp;
+ ptid_t ptid;
long dabr_value;
- ptid_t ptid = inferior_ptid;
dabr_value = addr & ~7;
switch (rw)
break;
}
- tid = TIDGET (ptid);
- if (tid == 0)
- tid = PIDGET (ptid);
+ saved_dabr_value = dabr_value;
- return ptrace (PTRACE_SET_DEBUGREG, tid, 0, dabr_value);
+ ALL_LWPS (lp, ptid)
+ if (ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value) < 0)
+ return -1;
+
+ return 0;
}
static int
ppc_linux_remove_watchpoint (CORE_ADDR addr, int len, int rw)
{
- int tid;
- ptid_t ptid = inferior_ptid;
-
- tid = TIDGET (ptid);
- if (tid == 0)
- tid = PIDGET (ptid);
-
- return ptrace (PTRACE_SET_DEBUGREG, tid, 0, 0);
+ struct lwp_info *lp;
+ ptid_t ptid;
+ long dabr_value = 0;
+
+ saved_dabr_value = 0;
+ ALL_LWPS (lp, ptid)
+ if (ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value) < 0)
+ return -1;
+ return 0;
}
-static int
-ppc_linux_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p)
+static void
+ppc_linux_new_thread (ptid_t ptid)
{
- if (last_stopped_data_address)
- {
- *addr_p = last_stopped_data_address;
- last_stopped_data_address = 0;
- return 1;
- }
- return 0;
+ ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value);
}
static int
-ppc_linux_stopped_by_watchpoint (void)
+ppc_linux_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p)
{
- int tid;
- struct siginfo siginfo;
- ptid_t ptid = inferior_ptid;
- CORE_ADDR *addr_p;
-
- tid = TIDGET(ptid);
- if (tid == 0)
- tid = PIDGET (ptid);
+ struct siginfo *siginfo_p;
- errno = 0;
- ptrace (PTRACE_GETSIGINFO, tid, (PTRACE_TYPE_ARG3) 0, &siginfo);
+ siginfo_p = linux_nat_get_siginfo (inferior_ptid);
- if (errno != 0 || siginfo.si_signo != SIGTRAP ||
- (siginfo.si_code & 0xffff) != 0x0004)
+ if (siginfo_p->si_signo != SIGTRAP
+ || (siginfo_p->si_code & 0xffff) != 0x0004 /* TRAP_HWBKPT */)
return 0;
- last_stopped_data_address = (uintptr_t) siginfo.si_addr;
+ *addr_p = (CORE_ADDR) (uintptr_t) siginfo_p->si_addr;
return 1;
}
+static int
+ppc_linux_stopped_by_watchpoint (void)
+{
+ CORE_ADDR addr;
+ return ppc_linux_stopped_data_address (¤t_target, &addr);
+}
+
+static int
+ppc_linux_watchpoint_addr_within_range (struct target_ops *target,
+ CORE_ADDR addr,
+ CORE_ADDR start, int length)
+{
+ addr &= ~7;
+ /* Check whether [start, start+length-1] intersects [addr, addr+7]. */
+ return start <= addr + 7 && start + length - 1 >= addr;
+}
+
static void
-ppc_linux_store_inferior_registers (int regno)
+ppc_linux_store_inferior_registers (struct regcache *regcache, int regno)
{
/* Overload thread id onto process id */
int tid = TIDGET (inferior_ptid);
tid = PIDGET (inferior_ptid);
if (regno >= 0)
- store_register (tid, regno);
+ store_register (regcache, tid, regno);
else
- store_ppc_registers (tid);
+ store_ppc_registers (regcache, tid);
}
+/* Functions for transferring registers between a gregset_t or fpregset_t
+ (see sys/ucontext.h) and gdb's regcache. The word size is that used
+ by the ptrace interface, not the current program's ABI. eg. If a
+ powerpc64-linux gdb is being used to debug a powerpc32-linux app, we
+ read or write 64-bit gregsets. This is to suit the host libthread_db. */
+
void
-supply_gregset (gdb_gregset_t *gregsetp)
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
{
- /* NOTE: cagney/2003-11-25: This is the word size used by the ptrace
- interface, and not the wordsize of the program's ABI. */
- int wordsize = sizeof (long);
- ppc_linux_supply_gregset (current_regcache, -1, gregsetp,
- sizeof (gdb_gregset_t), wordsize);
-}
+ const struct regset *regset = ppc_linux_gregset (sizeof (long));
-static void
-right_fill_reg (int regnum, void *reg)
-{
- /* NOTE: cagney/2003-11-25: This is the word size used by the ptrace
- interface, and not the wordsize of the program's ABI. */
- int wordsize = sizeof (long);
- /* Right fill the register. */
- regcache_raw_collect (current_regcache, regnum,
- ((bfd_byte *) reg
- + wordsize
- - register_size (current_gdbarch, regnum)));
+ ppc_supply_gregset (regset, regcache, -1, gregsetp, sizeof (*gregsetp));
}
void
-fill_gregset (gdb_gregset_t *gregsetp, int regno)
+fill_gregset (const struct regcache *regcache,
+ gdb_gregset_t *gregsetp, int regno)
{
- int regi;
- elf_greg_t *regp = (elf_greg_t *) gregsetp;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- const int elf_ngreg = 48;
-
+ const struct regset *regset = ppc_linux_gregset (sizeof (long));
- /* Start with zeros. */
- memset (regp, 0, elf_ngreg * sizeof (*regp));
+ if (regno == -1)
+ memset (gregsetp, 0, sizeof (*gregsetp));
+ ppc_collect_gregset (regset, regcache, regno, gregsetp, sizeof (*gregsetp));
+}
- for (regi = 0; regi < ppc_num_gprs; regi++)
- {
- if ((regno == -1) || regno == tdep->ppc_gp0_regnum + regi)
- right_fill_reg (tdep->ppc_gp0_regnum + regi, (regp + PT_R0 + regi));
- }
+void
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t * fpregsetp)
+{
+ const struct regset *regset = ppc_linux_fpregset ();
- if ((regno == -1) || regno == PC_REGNUM)
- right_fill_reg (PC_REGNUM, regp + PT_NIP);
- if ((regno == -1) || regno == tdep->ppc_lr_regnum)
- right_fill_reg (tdep->ppc_lr_regnum, regp + PT_LNK);
- if ((regno == -1) || regno == tdep->ppc_cr_regnum)
- regcache_raw_collect (current_regcache, tdep->ppc_cr_regnum,
- regp + PT_CCR);
- if ((regno == -1) || regno == tdep->ppc_xer_regnum)
- regcache_raw_collect (current_regcache, tdep->ppc_xer_regnum,
- regp + PT_XER);
- if ((regno == -1) || regno == tdep->ppc_ctr_regnum)
- right_fill_reg (tdep->ppc_ctr_regnum, regp + PT_CTR);
-#ifdef PT_MQ
- if (((regno == -1) || regno == tdep->ppc_mq_regnum)
- && (tdep->ppc_mq_regnum != -1))
- right_fill_reg (tdep->ppc_mq_regnum, regp + PT_MQ);
-#endif
- if ((regno == -1) || regno == tdep->ppc_ps_regnum)
- right_fill_reg (tdep->ppc_ps_regnum, regp + PT_MSR);
+ ppc_supply_fpregset (regset, regcache, -1,
+ fpregsetp, sizeof (*fpregsetp));
}
void
-supply_fpregset (gdb_fpregset_t * fpregsetp)
+fill_fpregset (const struct regcache *regcache,
+ gdb_fpregset_t *fpregsetp, int regno)
{
- ppc_linux_supply_fpregset (NULL, current_regcache, -1, fpregsetp,
- sizeof (gdb_fpregset_t));
+ const struct regset *regset = ppc_linux_fpregset ();
+
+ ppc_collect_fpregset (regset, regcache, regno,
+ fpregsetp, sizeof (*fpregsetp));
}
-/* Given a pointer to a floating point register set in /proc format
- (fpregset_t *), update the register specified by REGNO from gdb's
- idea of the current floating point register set. If REGNO is -1,
- update them all. */
-void
-fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
+static const struct target_desc *
+ppc_linux_read_description (struct target_ops *ops)
{
- int regi;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- bfd_byte *fpp = (void *) fpregsetp;
-
- if (ppc_floating_point_unit_p (current_gdbarch))
+ int altivec = 0;
+
+ int tid = TIDGET (inferior_ptid);
+ if (tid == 0)
+ tid = PIDGET (inferior_ptid);
+
+ if (have_ptrace_getsetevrregs)
{
- for (regi = 0; regi < ppc_num_fprs; regi++)
- {
- if ((regno == -1) || (regno == tdep->ppc_fp0_regnum + regi))
- regcache_raw_collect (current_regcache, tdep->ppc_fp0_regnum + regi,
- fpp + 8 * regi);
- }
- if (regno == -1 || regno == tdep->ppc_fpscr_regnum)
- right_fill_reg (tdep->ppc_fpscr_regnum, (fpp + 8 * 32));
+ struct gdb_evrregset_t evrregset;
+
+ if (ptrace (PTRACE_GETEVRREGS, tid, 0, &evrregset) >= 0)
+ return tdesc_powerpc_e500l;
+
+ /* EIO means that the PTRACE_GETEVRREGS request isn't supported.
+ Anything else needs to be reported. */
+ else if (errno != EIO)
+ perror_with_name (_("Unable to fetch SPE registers"));
}
+
+ if (have_ptrace_getvrregs)
+ {
+ gdb_vrregset_t vrregset;
+
+ if (ptrace (PTRACE_GETVRREGS, tid, 0, &vrregset) >= 0)
+ altivec = 1;
+
+ /* EIO means that the PTRACE_GETVRREGS request isn't supported.
+ Anything else needs to be reported. */
+ else if (errno != EIO)
+ perror_with_name (_("Unable to fetch AltiVec registers"));
+ }
+
+ /* Check for 64-bit inferior process. This is the case when the host is
+ 64-bit, and in addition the top bit of the MSR register is set. */
+#ifdef __powerpc64__
+ {
+ long msr;
+ errno = 0;
+ msr = (long) ptrace (PTRACE_PEEKUSER, tid, PT_MSR * 8, 0);
+ if (errno == 0 && msr < 0)
+ return altivec? tdesc_powerpc_altivec64l : tdesc_powerpc_64l;
+ }
+#endif
+
+ return altivec? tdesc_powerpc_altivec32l : tdesc_powerpc_32l;
}
void _initialize_ppc_linux_nat (void);
t->to_remove_watchpoint = ppc_linux_remove_watchpoint;
t->to_stopped_by_watchpoint = ppc_linux_stopped_by_watchpoint;
t->to_stopped_data_address = ppc_linux_stopped_data_address;
+ t->to_watchpoint_addr_within_range = ppc_linux_watchpoint_addr_within_range;
+
+ t->to_read_description = ppc_linux_read_description;
/* Register the target. */
linux_nat_add_target (t);
+ linux_nat_set_new_thread (t, ppc_linux_new_thread);
}