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"
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
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 (current_gdbarch))
u_addr = PT_NIP * wordsize;
if (regno == tdep->ppc_lr_regnum)
u_addr = PT_LNK * wordsize;
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 (regcache, regno,
regs + (regno - tdep->ppc_vr0_regnum) * vrregsize + offset);
static void
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);
static void
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);
int bytes_transferred;
if (regaddr == -1)
{
- memset (buf, '\0', register_size (current_gdbarch, regno)); /* Supply zeroes */
+ 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 (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));
+ 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 (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++)
{
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 (regcache, tid, tdep->ppc_gp0_regnum + i);
if (tdep->ppc_fp0_regnum >= 0)
for (i = 0; i < ppc_num_fprs; i++)
fetch_register (regcache, tid, tdep->ppc_fp0_regnum + i);
- fetch_register (regcache, tid, PC_REGNUM);
+ fetch_register (regcache, tid, gdbarch_pc_regnum (gdbarch));
if (tdep->ppc_ps_regnum != -1)
fetch_register (regcache, tid, tdep->ppc_ps_regnum);
if (tdep->ppc_cr_regnum != -1)
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 (regcache, regno,
regs + (regno - tdep->ppc_vr0_regnum) * vrregsize + offset);
static void
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
static void
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);
int i;
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 (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));
+ size_t padding = (bytes_to_transfer - register_size (gdbarch, regno));
regcache_raw_collect (regcache, regno, buf + padding);
}
{
char message[128];
sprintf (message, "writing register %s (#%d)",
- REGISTER_NAME (regno), regno);
+ gdbarch_register_name (gdbarch, regno), regno);
perror_with_name (message);
}
}
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++)
{
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 (regcache, tid, tdep->ppc_gp0_regnum + i);
if (tdep->ppc_fp0_regnum >= 0)
for (i = 0; i < ppc_num_fprs; i++)
store_register (regcache, tid, tdep->ppc_fp0_regnum + i);
- store_register (regcache, tid, PC_REGNUM);
+ store_register (regcache, tid, gdbarch_pc_regnum (gdbarch));
if (tdep->ppc_ps_regnum != -1)
store_register (regcache, tid, tdep->ppc_ps_regnum);
if (tdep->ppc_cr_regnum != -1)
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;
+
+ ALL_LWPS (lp, ptid)
+ if (ptrace (PTRACE_SET_DEBUGREG, TIDGET (ptid), 0, saved_dabr_value) < 0)
+ return -1;
- return ptrace (PTRACE_SET_DEBUGREG, tid, 0, dabr_value);
+ 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 void
ppc_linux_store_inferior_registers (struct regcache *regcache, int regno)
{
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 (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 (regcache, -1, gregsetp,
- sizeof (gdb_gregset_t), wordsize);
-}
+ const struct regset *regset = ppc_linux_gregset (sizeof (long));
-static void
-right_fill_reg (const struct regcache *regcache, 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 (regcache, regnum,
- ((bfd_byte *) reg
- + wordsize
- - register_size (current_gdbarch, regnum)));
+ ppc_supply_gregset (regset, regcache, -1, gregsetp, sizeof (*gregsetp));
}
void
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;
-
-
- /* Start with zeros. */
- memset (regp, 0, elf_ngreg * sizeof (*regp));
-
- for (regi = 0; regi < ppc_num_gprs; regi++)
- {
- if ((regno == -1) || regno == tdep->ppc_gp0_regnum + regi)
- right_fill_reg (regcache, tdep->ppc_gp0_regnum + regi,
- (regp + PT_R0 + regi));
- }
+ const struct regset *regset = ppc_linux_gregset (sizeof (long));
- if ((regno == -1) || regno == PC_REGNUM)
- right_fill_reg (regcache, PC_REGNUM, regp + PT_NIP);
- if ((regno == -1) || regno == tdep->ppc_lr_regnum)
- right_fill_reg (regcache, tdep->ppc_lr_regnum, regp + PT_LNK);
- if ((regno == -1) || regno == tdep->ppc_cr_regnum)
- regcache_raw_collect (regcache, tdep->ppc_cr_regnum,
- regp + PT_CCR);
- if ((regno == -1) || regno == tdep->ppc_xer_regnum)
- regcache_raw_collect (regcache, tdep->ppc_xer_regnum,
- regp + PT_XER);
- if ((regno == -1) || regno == tdep->ppc_ctr_regnum)
- right_fill_reg (regcache, 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 (regcache, tdep->ppc_mq_regnum, regp + PT_MQ);
-#endif
- if ((regno == -1) || regno == tdep->ppc_ps_regnum)
- right_fill_reg (regcache, tdep->ppc_ps_regnum, regp + PT_MSR);
+ if (regno == -1)
+ memset (gregsetp, 0, sizeof (*gregsetp));
+ ppc_collect_gregset (regset, regcache, regno, gregsetp, sizeof (*gregsetp));
}
void
supply_fpregset (struct regcache *regcache, const gdb_fpregset_t * fpregsetp)
{
- ppc_linux_supply_fpregset (NULL, regcache, -1, fpregsetp,
- sizeof (gdb_fpregset_t));
+ const struct regset *regset = ppc_linux_fpregset ();
+
+ ppc_supply_fpregset (regset, regcache, -1,
+ 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 (const struct regcache *regcache,
gdb_fpregset_t *fpregsetp, int regno)
{
- int regi;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- bfd_byte *fpp = (void *) fpregsetp;
-
- if (ppc_floating_point_unit_p (current_gdbarch))
+ const struct regset *regset = ppc_linux_fpregset ();
+
+ ppc_collect_fpregset (regset, regcache, regno,
+ fpregsetp, sizeof (*fpregsetp));
+}
+
+static const struct target_desc *
+ppc_linux_read_description (struct target_ops *ops)
+{
+ if (have_ptrace_getsetevrregs)
{
- for (regi = 0; regi < ppc_num_fprs; regi++)
+ struct gdb_evrregset_t evrregset;
+ int tid = TIDGET (inferior_ptid);
+
+ if (tid == 0)
+ tid = PIDGET (inferior_ptid);
+
+ if (ptrace (PTRACE_GETEVRREGS, tid, 0, &evrregset) >= 0)
+ return tdesc_powerpc_e500;
+ else
{
- if ((regno == -1) || (regno == tdep->ppc_fp0_regnum + regi))
- regcache_raw_collect (regcache, tdep->ppc_fp0_regnum + regi,
- fpp + 8 * regi);
- }
- if (regno == -1 || regno == tdep->ppc_fpscr_regnum)
- right_fill_reg (regcache, tdep->ppc_fpscr_regnum, (fpp + 8 * 32));
+ /* EIO means that the PTRACE_GETEVRREGS request isn't supported. */
+ if (errno == EIO)
+ return NULL;
+ else
+ /* Anything else needs to be reported. */
+ perror_with_name (_("Unable to fetch SPE registers"));
+ }
}
+
+ return NULL;
}
void _initialize_ppc_linux_nat (void);
t->to_stopped_by_watchpoint = ppc_linux_stopped_by_watchpoint;
t->to_stopped_data_address = ppc_linux_stopped_data_address;
+ 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);
}
projects / deliverable / binutils-gdb.git / blobdiff