static void
ia64_linux_store_register (const struct regcache *regcache, int regnum)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
CORE_ADDR addr;
size_t size;
PTRACE_TYPE_RET *buf;
int pid, i;
if (ia64_cannot_store_register (gdbarch, regnum))
return;
/* Cater for systems like GNU/Linux, that implement threads as
separate processes. */
pid = ptid_get_lwp (inferior_ptid);
if (pid == 0)
pid = ptid_get_pid (inferior_ptid);
/* This isn't really an address, but ptrace thinks of it as one. */
addr = ia64_register_addr (gdbarch, regnum);
size = register_size (gdbarch, regnum);
gdb_assert ((size % sizeof (PTRACE_TYPE_RET)) == 0);
buf = alloca (size);
/* Write the register contents into the inferior a chunk at a time. */
regcache_raw_collect (regcache, regnum, buf);
for (i = 0; i < size / sizeof (PTRACE_TYPE_RET); i++)
{
errno = 0;
ptrace (PT_WRITE_U, pid, (PTRACE_TYPE_ARG3)addr, buf[i]);
if (errno != 0)
error (_("Couldn't write register %s (#%d): %s."),
gdbarch_register_name (gdbarch, regnum),
regnum, safe_strerror (errno));
addr += sizeof (PTRACE_TYPE_RET);
}
}
static void
ia64_linux_store_register (const struct regcache *regcache, int regnum)
{
struct gdbarch *gdbarch = regcache->arch ();
CORE_ADDR addr;
size_t size;
PTRACE_TYPE_RET *buf;
pid_t pid;
int i;
if (ia64_cannot_store_register (gdbarch, regnum))
return;
pid = get_ptrace_pid (regcache->ptid ());
/* This isn't really an address, but ptrace thinks of it as one. */
addr = ia64_register_addr (gdbarch, regnum);
size = register_size (gdbarch, regnum);
gdb_assert ((size % sizeof (PTRACE_TYPE_RET)) == 0);
buf = (PTRACE_TYPE_RET *) alloca (size);
/* Write the register contents into the inferior a chunk at a time. */
regcache->raw_collect (regnum, buf);
for (i = 0; i < size / sizeof (PTRACE_TYPE_RET); i++)
{
errno = 0;
ptrace (PT_WRITE_U, pid, (PTRACE_TYPE_ARG3)addr, buf[i]);
if (errno != 0)
error (_("Couldn't write register %s (#%d): %s."),
gdbarch_register_name (gdbarch, regnum),
regnum, safe_strerror (errno));
addr += sizeof (PTRACE_TYPE_RET);
}
}
static void
ia64_linux_fetch_register (struct regcache *regcache, int regnum)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
CORE_ADDR addr;
size_t size;
PTRACE_TYPE_RET *buf;
int pid, i;
/* r0 cannot be fetched but is always zero. */
if (regnum == IA64_GR0_REGNUM)
{
const gdb_byte zero[8] = { 0 };
gdb_assert (sizeof (zero) == register_size (gdbarch, regnum));
regcache_raw_supply (regcache, regnum, zero);
return;
}
/* fr0 cannot be fetched but is always zero. */
if (regnum == IA64_FR0_REGNUM)
{
const gdb_byte f_zero[16] = { 0 };
gdb_assert (sizeof (f_zero) == register_size (gdbarch, regnum));
regcache_raw_supply (regcache, regnum, f_zero);
return;
}
/* fr1 cannot be fetched but is always one (1.0). */
if (regnum == IA64_FR1_REGNUM)
{
const gdb_byte f_one[16] =
{ 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0xff, 0, 0, 0, 0, 0, 0 };
gdb_assert (sizeof (f_one) == register_size (gdbarch, regnum));
regcache_raw_supply (regcache, regnum, f_one);
return;
}
if (ia64_cannot_fetch_register (gdbarch, regnum))
{
regcache_raw_supply (regcache, regnum, NULL);
return;
}
/* Cater for systems like GNU/Linux, that implement threads as
separate processes. */
pid = ptid_get_lwp (inferior_ptid);
if (pid == 0)
pid = ptid_get_pid (inferior_ptid);
/* This isn't really an address, but ptrace thinks of it as one. */
addr = ia64_register_addr (gdbarch, regnum);
size = register_size (gdbarch, regnum);
gdb_assert ((size % sizeof (PTRACE_TYPE_RET)) == 0);
buf = alloca (size);
/* Read the register contents from the inferior a chunk at a time. */
for (i = 0; i < size / sizeof (PTRACE_TYPE_RET); i++)
{
errno = 0;
buf[i] = ptrace (PT_READ_U, pid, (PTRACE_TYPE_ARG3)addr, 0);
if (errno != 0)
error (_("Couldn't read register %s (#%d): %s."),
gdbarch_register_name (gdbarch, regnum),
regnum, safe_strerror (errno));
addr += sizeof (PTRACE_TYPE_RET);
}
regcache_raw_supply (regcache, regnum, buf);
}