/* The architecture this descriptor belongs to. */
struct gdbarch *gdbarch;
- /* Is this a ``legacy'' register cache? Such caches reserve space
- for raw and pseudo registers and allow access to both. */
- int legacy_p;
-
/* The raw register cache. Each raw (or hard) register is supplied
by the target interface. The raw cache should not contain
redundant information - if the PC is constructed from two
struct type **register_type;
};
-static void
-init_legacy_regcache_descr (struct gdbarch *gdbarch,
- struct regcache_descr *descr)
-{
- int i;
- /* FIXME: cagney/2002-05-11: gdbarch_data() should take that
- ``gdbarch'' as a parameter. */
- gdb_assert (gdbarch != NULL);
-
- /* Compute the offset of each register. Legacy architectures define
- DEPRECATED_REGISTER_BYTE() so use that. */
- /* FIXME: cagney/2002-11-07: Instead of using
- DEPRECATED_REGISTER_BYTE() this code should, as is done in
- init_regcache_descr(), compute the offets at runtime. This
- currently isn't possible as some ISAs define overlapping register
- regions - see the mess in read_register_bytes() and
- write_register_bytes() registers. */
- descr->sizeof_register
- = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long);
- descr->register_offset
- = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long);
- for (i = 0; i < descr->nr_cooked_registers; i++)
- {
- /* FIXME: cagney/2001-12-04: This code shouldn't need to use
- DEPRECATED_REGISTER_BYTE(). Unfortunately, legacy code likes
- to lay the buffer out so that certain registers just happen
- to overlap. Ulgh! New targets use gdbarch's register
- read/write and entirely avoid this uglyness. */
- descr->register_offset[i] = DEPRECATED_REGISTER_BYTE (i);
- descr->sizeof_register[i] = DEPRECATED_REGISTER_RAW_SIZE (i);
- gdb_assert (MAX_REGISTER_SIZE >= DEPRECATED_REGISTER_RAW_SIZE (i));
- gdb_assert (MAX_REGISTER_SIZE >= DEPRECATED_REGISTER_VIRTUAL_SIZE (i));
- }
-
- /* Compute the real size of the register buffer. Start out by
- trusting DEPRECATED_REGISTER_BYTES, but then adjust it upwards
- should that be found to not be sufficient. */
- /* FIXME: cagney/2002-11-05: Instead of using the macro
- DEPRECATED_REGISTER_BYTES, this code should, as is done in
- init_regcache_descr(), compute the total number of register bytes
- using the accumulated offsets. */
- descr->sizeof_cooked_registers = DEPRECATED_REGISTER_BYTES; /* OK */
- for (i = 0; i < descr->nr_cooked_registers; i++)
- {
- long regend;
- /* Keep extending the buffer so that there is always enough
- space for all registers. The comparison is necessary since
- legacy code is free to put registers in random places in the
- buffer separated by holes. Once DEPRECATED_REGISTER_BYTE()
- is killed this can be greatly simplified. */
- regend = descr->register_offset[i] + descr->sizeof_register[i];
- if (descr->sizeof_cooked_registers < regend)
- descr->sizeof_cooked_registers = regend;
- }
- /* FIXME: cagney/2002-05-11: Shouldn't be including pseudo-registers
- in the register cache. Unfortunately some architectures still
- rely on this and the pseudo_register_write() method. */
- descr->sizeof_raw_registers = descr->sizeof_cooked_registers;
-}
-
static void *
init_regcache_descr (struct gdbarch *gdbarch)
{
descr->register_type
= GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, struct type *);
for (i = 0; i < descr->nr_cooked_registers; i++)
- {
- if (gdbarch_register_type_p (gdbarch))
- {
- gdb_assert (!DEPRECATED_REGISTER_VIRTUAL_TYPE_P ()); /* OK */
- descr->register_type[i] = gdbarch_register_type (gdbarch, i);
- }
- else
- descr->register_type[i] = DEPRECATED_REGISTER_VIRTUAL_TYPE (i); /* OK */
- }
+ descr->register_type[i] = gdbarch_register_type (gdbarch, i);
/* Construct a strictly RAW register cache. Don't allow pseudo's
into the register cache. */
.. NUM_REGS + NUM_PSEUDO_REGS). */
descr->sizeof_raw_register_valid_p = descr->sizeof_cooked_register_valid_p;
- /* If an old style architecture, fill in the remainder of the
- register cache descriptor using the register macros. */
- /* NOTE: cagney/2003-06-29: If either of DEPRECATED_REGISTER_BYTE or
- DEPRECATED_REGISTER_RAW_SIZE are still present, things are most likely
- totally screwed. Ex: an architecture with raw register sizes
- smaller than what DEPRECATED_REGISTER_BYTE indicates; non
- monotonic DEPRECATED_REGISTER_BYTE values. For GDB 6 check for
- these nasty methods and fall back to legacy code when present.
- Sigh! */
- if ((!gdbarch_pseudo_register_read_p (gdbarch)
- && !gdbarch_pseudo_register_write_p (gdbarch)
- && !gdbarch_register_type_p (gdbarch))
- || DEPRECATED_REGISTER_BYTE_P ()
- || DEPRECATED_REGISTER_RAW_SIZE_P ())
- {
- descr->legacy_p = 1;
- init_legacy_regcache_descr (gdbarch, descr);
- return descr;
- }
-
/* Lay out the register cache.
NOTE: cagney/2002-05-22: Only register_type() is used when
int size;
gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS));
size = descr->sizeof_register[regnum];
- /* NB: The deprecated DEPRECATED_REGISTER_RAW_SIZE, if not provided, defaults
- to the size of the register's type. */
- gdb_assert (size == DEPRECATED_REGISTER_RAW_SIZE (regnum)); /* OK */
- /* NB: Don't check the register's virtual size. It, in say the case
- of the MIPS, may not match the raw size! */
return size;
}
{
gdb_assert (regcache != NULL && buf != NULL);
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
- if (regcache->descr->legacy_p
- && !regcache->readonly_p)
- {
- gdb_assert (regcache == current_regcache);
- /* For moment, just use underlying legacy code. Ulgh!!! This
- silently and very indirectly updates the regcache's regcache
- via the global deprecated_register_valid[]. */
- legacy_read_register_gen (regnum, buf);
- return;
- }
/* Make certain that the register cache is up-to-date with respect
to the current thread. This switching shouldn't be necessary
only there is still only one target side register cache. Sigh!
{
gdb_assert (current_regcache != NULL);
gdb_assert (current_regcache->descr->gdbarch == current_gdbarch);
- if (current_regcache->descr->legacy_p)
- {
- legacy_read_register_gen (regnum, buf);
- return;
- }
regcache_cooked_read (current_regcache, regnum, buf);
}
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
gdb_assert (!regcache->readonly_p);
- if (regcache->descr->legacy_p)
- {
- /* For moment, just use underlying legacy code. Ulgh!!! This
- silently and very indirectly updates the regcache's buffers
- via the globals deprecated_register_valid[] and registers[]. */
- gdb_assert (regcache == current_regcache);
- legacy_write_register_gen (regnum, buf);
- return;
- }
-
/* On the sparc, writing %g0 is a no-op, so we don't even want to
change the registers array if something writes to this register. */
if (CANNOT_STORE_REGISTER (regnum))
{
gdb_assert (current_regcache != NULL);
gdb_assert (current_regcache->descr->gdbarch == current_gdbarch);
- if (current_regcache->descr->legacy_p)
- {
- legacy_write_register_gen (regnum, buf);
- return;
- }
regcache_cooked_write (current_regcache, regnum, buf);
}
unsigned char buf[MAX_REGISTER_SIZE];
#if 0
- fprintf_unfiltered (file, "legacy_p %d\n", regcache->descr->legacy_p);
fprintf_unfiltered (file, "nr_raw_registers %d\n",
regcache->descr->nr_raw_registers);
fprintf_unfiltered (file, "nr_cooked_registers %d\n",
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