void
mipsfbsd_fill_reg (char *regs, int regno)
{
int i;
for (i = 0; i <= PC_REGNUM; i++)
if ((regno == i || regno == -1) && ! CANNOT_STORE_REGISTER (i))
regcache_collect (i, regs + (i * mips_regsize (current_gdbarch)));
}
void
mipsfbsd_fill_fpreg (char *fpregs, int regno)
{
int i;
for (i = FP0_REGNUM; i <= mips_regnum (current_gdbarch)->fp_control_status;
i++)
if ((regno == i || regno == -1) && ! CANNOT_STORE_REGISTER (i))
regcache_collect (i,
fpregs + ((i - FP0_REGNUM) * mips_regsize (current_gdbarch)));
}
void
store_inferior_registers (int regno)
{
register unsigned int regaddr;
char buf[80];
register int i;
unsigned int offset = U_REGS_OFFSET;
int scratch;
if (regno >= 0)
{
if (CANNOT_STORE_REGISTER (regno))
return;
regaddr = register_addr (regno, offset);
errno = 0;
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
{
scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3;
ptrace (PT_WUREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) regaddr,
scratch);
if (errno != 0)
{
/* Error, even if attached. Failing to write these two
registers is pretty serious. */
sprintf (buf, "writing register number %d", regno);
perror_with_name (buf);
}
}
else
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
{
errno = 0;
ptrace (PT_WUREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) regaddr,
*(int *) ®isters[REGISTER_BYTE (regno) + i]);
if (errno != 0)
{
/* Warning, not error, in case we are attached; sometimes the
kernel doesn't let us at the registers. */
char *err = safe_strerror (errno);
char *msg = alloca (strlen (err) + 128);
sprintf (msg, "writing register %s: %s",
REGISTER_NAME (regno), err);
warning (msg);
return;
}
regaddr += sizeof (int);
}
}
else
for (regno = 0; regno < NUM_REGS; regno++)
store_inferior_registers (regno);
}
void
alphabsd_fill_fpreg (char *fpregs, int regno)
{
int i;
for (i = FP0_REGNUM; i < FP0_REGNUM + NUM_FPREGS; i++)
if ((regno == i || regno == -1) && ! CANNOT_STORE_REGISTER (i))
regcache_collect (i, fpregs + ((i - FP0_REGNUM) * 8));
if (regno == ALPHA_FPCR_REGNUM || regno == -1)
regcache_collect (ALPHA_FPCR_REGNUM, fpregs + (32 * 8));
}
void
alphabsd_fill_reg (char *regs, int regno)
{
int i;
for (i = 0; i < NUM_GREGS; i++)
if ((regno == i || regno == -1) && ! CANNOT_STORE_REGISTER (i))
regcache_collect (i, regs + (i * 8));
/* The PC travels in the ZERO slot. */
if (regno == PC_REGNUM || regno == -1)
regcache_collect (PC_REGNUM, regs + (31 * 8));
}
static void
store_register (int regno)
{
/* This isn't really an address. But ptrace thinks of it as one. */
CORE_ADDR regaddr;
char mess[128]; /* For messages */
int i;
unsigned int offset; /* Offset of registers within the u area. */
int tid;
char buf[MAX_REGISTER_SIZE];
if (CANNOT_STORE_REGISTER (regno))
{
return;
}
/* Overload thread id onto process id */
tid = TIDGET (inferior_ptid);
if (tid == 0)
tid = PIDGET (inferior_ptid); /* no thread id, just use process id */
offset = U_REGS_OFFSET;
regaddr = register_addr (regno, offset);
/* Put the contents of regno into a local buffer */
regcache_raw_collect (current_regcache, regno, buf);
/* Store the local buffer into the inferior a chunk at the time. */
for (i = 0; i < register_size (current_gdbarch, regno);
i += sizeof (PTRACE_XFER_TYPE))
{
errno = 0;
ptrace (PT_WRITE_U, tid, (PTRACE_ARG3_TYPE) regaddr,
*(PTRACE_XFER_TYPE *) (buf + i));
regaddr += sizeof (PTRACE_XFER_TYPE);
if (errno != 0)
{
sprintf (mess, "writing register %s (#%d)",
REGISTER_NAME (regno), regno);
perror_with_name (mess);
}
}
}
void
store_inferior_registers (int regno)
{
int reglo, reghi;
int i;
unsigned long ecp;
if (regno == -1)
{
reglo = 0;
reghi = NUM_REGS - 1;
}
else
reglo = reghi = regno;
ecp = registers_addr (PIDGET (inferior_ptid));
for (regno = reglo; regno <= reghi; regno++)
{
int ptrace_fun = PTRACE_POKEUSER;
if (CANNOT_STORE_REGISTER (regno))
continue;
#ifdef M68K
ptrace_fun = regno == SP_REGNUM ? PTRACE_POKEUSP : PTRACE_POKEUSER;
#endif
for (i = 0; i < DEPRECATED_REGISTER_RAW_SIZE (regno); i += sizeof (int))
{
unsigned int reg;
reg = *(unsigned int *) &deprecated_registers[DEPRECATED_REGISTER_BYTE (regno) + i];
errno = 0;
ptrace (ptrace_fun, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) (ecp + regmap[regno] + i), reg);
if (errno)
perror_with_name ("ptrace(PTRACE_POKEUSP)");
}
}
}
static void
store_register (int regno)
{
int tid;
int val;
if (CANNOT_STORE_REGISTER (regno))
return;
/* GNU/Linux LWP ID's are process ID's. */
tid = TIDGET (inferior_ptid);
if (tid == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
errno = 0;
regcache_raw_collect (current_regcache, regno, &val);
ptrace (PTRACE_POKEUSER, tid, register_addr (regno, 0), val);
if (errno != 0)
error (_("Couldn't write register %s (#%d): %s."), REGISTER_NAME (regno),
regno, safe_strerror (errno));
}
static void
inf_ptrace_store_register (int regnum)
{
CORE_ADDR addr;
size_t size;
PTRACE_TYPE_RET *buf;
int pid, i;
if (CANNOT_STORE_REGISTER (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 = inf_ptrace_register_u_offset (regnum);
size = register_size (current_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 (current_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."),
REGISTER_NAME (regnum), regnum, safe_strerror (errno));
addr += sizeof (PTRACE_TYPE_RET);
}
}
static void
store_register (int regnum)
{
CORE_ADDR addr;
size_t size;
PTRACE_TYPE_RET *buf;
int tid, i;
if (CANNOT_STORE_REGISTER (regnum))
return;
/* GNU/Linux LWP ID's are process ID's. */
tid = TIDGET (inferior_ptid);
if (tid == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
/* This isn't really an address. But ptrace thinks of it as one. */
addr = register_addr (regnum, U_REGS_OFFSET);
size = register_size (current_gdbarch, regnum);
gdb_assert ((size % sizeof (PTRACE_TYPE_RET)) == 0);
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_WRITE_U, tid, (PTRACE_TYPE_ARG3) addr, buf[i]);
if (errno != 0)
error (_("Couldn't write register %s (#%d): %s."),
REGISTER_NAME (regnum), regnum, safe_strerror (errno));
addr += sizeof (PTRACE_TYPE_RET);
}
}
void
store_inferior_registers (int regno)
{
unsigned int regaddr;
char buf[80];
int i;
unsigned int offset = U_REGS_OFFSET;
int scratch;
if (regno >= 0)
{
unsigned int addr, len, offset;
if (CANNOT_STORE_REGISTER (regno))
return;
offset = 0;
len = DEPRECATED_REGISTER_RAW_SIZE (regno);
/* Requests for register zero actually want the save_state's
ss_flags member. As RM says: "Oh, what a hack!" */
if (regno == 0)
{
save_state_t ss;
addr = HPPAH_OFFSETOF (save_state_t, ss_flags);
len = sizeof (ss.ss_flags);
/* Note that ss_flags is always an int, no matter what
DEPRECATED_REGISTER_RAW_SIZE(0) says. Assuming all HP-UX
PA machines are big-endian, put it at the least
significant end of the value, and zap the rest of the
buffer. */
offset = DEPRECATED_REGISTER_RAW_SIZE (0) - len;
}
/* Floating-point registers come from the ss_fpblock area. */
else if (regno >= HPPA_FP0_REGNUM)
addr = (HPPAH_OFFSETOF (save_state_t, ss_fpblock)
+ (DEPRECATED_REGISTER_BYTE (regno) - DEPRECATED_REGISTER_BYTE (HPPA_FP0_REGNUM)));
/* Wide registers come from the ss_wide area.
I think it's more PC to test (ss_flags & SS_WIDEREGS) to select
between ss_wide and ss_narrow than to use the raw register size.
But checking ss_flags would require an extra ptrace call for
every register reference. Bleah. */
else if (len == 8)
addr = (HPPAH_OFFSETOF (save_state_t, ss_wide)
+ DEPRECATED_REGISTER_BYTE (regno));
/* Narrow registers come from the ss_narrow area. Note that
ss_narrow starts with gr1, not gr0. */
else if (len == 4)
addr = (HPPAH_OFFSETOF (save_state_t, ss_narrow)
+ (DEPRECATED_REGISTER_BYTE (regno) - DEPRECATED_REGISTER_BYTE (1)));
else
internal_error (__FILE__, __LINE__,
"hppah-nat.c (write_register): unexpected register size");
#ifdef GDB_TARGET_IS_HPPA_20W
/* Unbelieveable. The PC head and tail must be written in 64bit hunks
or we will get an error. Worse yet, the oddball ptrace/ttrace
layering will not allow us to perform a 64bit register store.
What a crock. */
if (regno == HPPA_PCOQ_HEAD_REGNUM || regno == HPPA_PCOQ_TAIL_REGNUM && len == 8)
{
CORE_ADDR temp;
temp = *(CORE_ADDR *)&deprecated_registers[DEPRECATED_REGISTER_BYTE (regno)];
/* Set the priv level (stored in the low two bits of the PC. */
temp |= 0x3;
ttrace_write_reg_64 (PIDGET (inferior_ptid), (CORE_ADDR)addr,
(CORE_ADDR)&temp);
/* If we fail to write the PC, give a true error instead of
just a warning. */
if (errno != 0)
{
char *err = safe_strerror (errno);
char *msg = alloca (strlen (err) + 128);
sprintf (msg, "writing `%s' register: %s",
REGISTER_NAME (regno), err);
perror_with_name (msg);
}
return;
}
/* Another crock. HPUX complains if you write a nonzero value to
the high part of IPSW. What will it take for HP to catch a
clue about building sensible interfaces? */
if (regno == HPPA_IPSW_REGNUM && len == 8)
*(int *)&deprecated_registers[DEPRECATED_REGISTER_BYTE (regno)] = 0;
#endif
for (i = 0; i < len; i += sizeof (int))
{
errno = 0;
call_ptrace (PT_WUREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) addr + i,
*(int *) &deprecated_registers[DEPRECATED_REGISTER_BYTE (regno) + i]);
if (errno != 0)
{
/* Warning, not error, in case we are attached; sometimes
the kernel doesn't let us at the registers. */
char *err = safe_strerror (errno);
char *msg = alloca (strlen (err) + 128);
sprintf (msg, "writing `%s' register: %s",
REGISTER_NAME (regno), err);
/* If we fail to write the PC, give a true error instead of
just a warning. */
if (regno == HPPA_PCOQ_HEAD_REGNUM || regno == HPPA_PCOQ_TAIL_REGNUM)
perror_with_name (msg);
else
warning (msg);
return;
}
}
}
else
for (regno = 0; regno < NUM_REGS; regno++)
store_inferior_registers (regno);
}
