/* Cache and manage the values of registers for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, 2001,
- 2002, 2004, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbcmd.h"
#include "regcache.h"
#include "reggroups.h"
-#include "gdb_assert.h"
-#include "gdb_string.h"
-#include "gdbcmd.h" /* For maintenanceprintlist. */
#include "observer.h"
-#include "exceptions.h"
#include "remote.h"
+#include "valprint.h"
+#include "regset.h"
+#include <forward_list>
/*
* DATA STRUCTURE
static struct regcache_descr *
regcache_descr (struct gdbarch *gdbarch)
{
- return gdbarch_data (gdbarch, regcache_descr_handle);
+ return (struct regcache_descr *) gdbarch_data (gdbarch,
+ regcache_descr_handle);
}
/* Utility functions returning useful register attributes stored in
return size;
}
-/* The register cache for storing raw register values. */
+/* See common/common-regcache.h. */
-struct regcache
+int
+regcache_register_size (const struct regcache *regcache, int n)
{
- struct regcache_descr *descr;
-
- /* The address space of this register cache (for registers where it
- makes sense, like PC or SP). */
- struct address_space *aspace;
-
- /* The register buffers. A read-only register cache can hold the
- full [0 .. gdbarch_num_regs + gdbarch_num_pseudo_regs) while a read/write
- register cache can only hold [0 .. gdbarch_num_regs). */
- gdb_byte *registers;
- /* Register cache status. */
- signed char *register_status;
- /* Is this a read-only cache? A read-only cache is used for saving
- the target's register state (e.g, across an inferior function
- call or just before forcing a function return). A read-only
- cache can only be updated via the methods regcache_dup() and
- regcache_cpy(). The actual contents are determined by the
- reggroup_save and reggroup_restore methods. */
- int readonly_p;
- /* If this is a read-write cache, which thread's registers is
- it connected to? */
- ptid_t ptid;
-};
+ return register_size (get_regcache_arch (regcache), n);
+}
-static struct regcache *
-regcache_xmalloc_1 (struct gdbarch *gdbarch, struct address_space *aspace,
- int readonly_p)
+regcache::regcache (gdbarch *gdbarch, address_space *aspace_,
+ bool readonly_p_)
+ : m_aspace (aspace_), m_readonly_p (readonly_p_)
{
- struct regcache_descr *descr;
- struct regcache *regcache;
-
gdb_assert (gdbarch != NULL);
- descr = regcache_descr (gdbarch);
- regcache = XMALLOC (struct regcache);
- regcache->descr = descr;
- regcache->readonly_p = readonly_p;
- if (readonly_p)
+ m_descr = regcache_descr (gdbarch);
+
+ if (m_readonly_p)
{
- regcache->registers
- = XCALLOC (descr->sizeof_cooked_registers, gdb_byte);
- regcache->register_status
- = XCALLOC (descr->sizeof_cooked_register_status, gdb_byte);
+ m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_cooked_registers);
+ m_register_status = XCNEWVEC (signed char,
+ m_descr->sizeof_cooked_register_status);
}
else
{
- regcache->registers
- = XCALLOC (descr->sizeof_raw_registers, gdb_byte);
- regcache->register_status
- = XCALLOC (descr->sizeof_raw_register_status, gdb_byte);
+ m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_raw_registers);
+ m_register_status = XCNEWVEC (signed char,
+ m_descr->sizeof_raw_register_status);
}
- regcache->aspace = aspace;
- regcache->ptid = minus_one_ptid;
- return regcache;
+ m_ptid = minus_one_ptid;
+}
+
+static enum register_status
+do_cooked_read (void *src, int regnum, gdb_byte *buf)
+{
+ struct regcache *regcache = (struct regcache *) src;
+
+ return regcache_cooked_read (regcache, regnum, buf);
+}
+
+regcache::regcache (readonly_t, const regcache &src)
+ : regcache (src.arch (), src.aspace (), true)
+{
+ gdb_assert (!src.m_readonly_p);
+ save (do_cooked_read, (void *) &src);
+}
+
+gdbarch *
+regcache::arch () const
+{
+ return m_descr->gdbarch;
+}
+
+/* See regcache.h. */
+
+ptid_t
+regcache_get_ptid (const struct regcache *regcache)
+{
+ gdb_assert (!ptid_equal (regcache->ptid (), minus_one_ptid));
+
+ return regcache->ptid ();
}
struct regcache *
regcache_xmalloc (struct gdbarch *gdbarch, struct address_space *aspace)
{
- return regcache_xmalloc_1 (gdbarch, aspace, 1);
+ return new regcache (gdbarch, aspace);
}
void
{
if (regcache == NULL)
return;
- xfree (regcache->registers);
- xfree (regcache->register_status);
- xfree (regcache);
+
+ delete regcache;
}
static void
do_regcache_xfree (void *data)
{
- regcache_xfree (data);
+ regcache_xfree ((struct regcache *) data);
}
struct cleanup *
return make_cleanup (do_regcache_xfree, regcache);
}
+/* Cleanup routines for invalidating a register. */
+
+struct register_to_invalidate
+{
+ struct regcache *regcache;
+ int regnum;
+};
+
+static void
+do_regcache_invalidate (void *data)
+{
+ struct register_to_invalidate *reg = (struct register_to_invalidate *) data;
+
+ regcache_invalidate (reg->regcache, reg->regnum);
+}
+
+static struct cleanup *
+make_cleanup_regcache_invalidate (struct regcache *regcache, int regnum)
+{
+ struct register_to_invalidate* reg = XNEW (struct register_to_invalidate);
+
+ reg->regcache = regcache;
+ reg->regnum = regnum;
+ return make_cleanup_dtor (do_regcache_invalidate, (void *) reg, xfree);
+}
+
/* Return REGCACHE's architecture. */
struct gdbarch *
get_regcache_arch (const struct regcache *regcache)
{
- return regcache->descr->gdbarch;
+ return regcache->arch ();
}
struct address_space *
get_regcache_aspace (const struct regcache *regcache)
{
- return regcache->aspace;
+ return regcache->aspace ();
}
/* Return a pointer to register REGNUM's buffer cache. */
-static gdb_byte *
-register_buffer (const struct regcache *regcache, int regnum)
+gdb_byte *
+regcache::register_buffer (int regnum) const
+{
+ return m_registers + m_descr->register_offset[regnum];
+}
+
+void
+regcache_save (struct regcache *regcache,
+ regcache_cooked_read_ftype *cooked_read, void *src)
{
- return regcache->registers + regcache->descr->register_offset[regnum];
+ regcache->save (cooked_read, src);
}
void
-regcache_save (struct regcache *dst, regcache_cooked_read_ftype *cooked_read,
- void *src)
+regcache::save (regcache_cooked_read_ftype *cooked_read,
+ void *src)
{
- struct gdbarch *gdbarch = dst->descr->gdbarch;
- gdb_byte buf[MAX_REGISTER_SIZE];
+ struct gdbarch *gdbarch = m_descr->gdbarch;
int regnum;
/* The DST should be `read-only', if it wasn't then the save would
end up trying to write the register values back out to the
target. */
- gdb_assert (dst->readonly_p);
+ gdb_assert (m_readonly_p);
/* Clear the dest. */
- memset (dst->registers, 0, dst->descr->sizeof_cooked_registers);
- memset (dst->register_status, 0,
- dst->descr->sizeof_cooked_register_status);
+ memset (m_registers, 0, m_descr->sizeof_cooked_registers);
+ memset (m_register_status, 0, m_descr->sizeof_cooked_register_status);
/* Copy over any registers (identified by their membership in the
save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs +
gdbarch_num_pseudo_regs) range is checked since some architectures need
to save/restore `cooked' registers that live in memory. */
- for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++)
+ for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++)
{
if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup))
{
- enum register_status status = cooked_read (src, regnum, buf);
+ gdb_byte *dst_buf = register_buffer (regnum);
+ enum register_status status = cooked_read (src, regnum, dst_buf);
- if (status == REG_VALID)
- memcpy (register_buffer (dst, regnum), buf,
- register_size (gdbarch, regnum));
- else
- {
- gdb_assert (status != REG_UNKNOWN);
+ gdb_assert (status != REG_UNKNOWN);
- memset (register_buffer (dst, regnum), 0,
- register_size (gdbarch, regnum));
- }
- dst->register_status[regnum] = status;
+ if (status != REG_VALID)
+ memset (dst_buf, 0, register_size (gdbarch, regnum));
+
+ m_register_status[regnum] = status;
}
}
}
void
-regcache_restore (struct regcache *dst,
- regcache_cooked_read_ftype *cooked_read,
- void *cooked_read_context)
+regcache::restore (struct regcache *src)
{
- struct gdbarch *gdbarch = dst->descr->gdbarch;
- gdb_byte buf[MAX_REGISTER_SIZE];
+ struct gdbarch *gdbarch = m_descr->gdbarch;
int regnum;
/* The dst had better not be read-only. If it is, the `restore'
doesn't make much sense. */
- gdb_assert (!dst->readonly_p);
+ gdb_assert (!m_readonly_p);
+ gdb_assert (src->m_readonly_p);
/* Copy over any registers, being careful to only restore those that
were both saved and need to be restored. The full [0 .. gdbarch_num_regs
+ gdbarch_num_pseudo_regs) range is checked since some architectures need
to save/restore `cooked' registers that live in memory. */
- for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++)
+ for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++)
{
if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup))
{
- int valid = cooked_read (cooked_read_context, regnum, buf);
-
- if (valid)
- regcache_cooked_write (dst, regnum, buf);
+ if (src->m_register_status[regnum] == REG_VALID)
+ cooked_write (regnum, src->register_buffer (regnum));
}
}
}
-static enum register_status
-do_cooked_read (void *src, int regnum, gdb_byte *buf)
-{
- struct regcache *regcache = src;
-
- return regcache_cooked_read (regcache, regnum, buf);
-}
-
void
regcache_cpy (struct regcache *dst, struct regcache *src)
{
gdb_assert (src != NULL && dst != NULL);
- gdb_assert (src->descr->gdbarch == dst->descr->gdbarch);
+ gdb_assert (src->m_descr->gdbarch == dst->m_descr->gdbarch);
gdb_assert (src != dst);
- gdb_assert (src->readonly_p || dst->readonly_p);
+ gdb_assert (src->m_readonly_p && !dst->m_readonly_p);
- if (!src->readonly_p)
- regcache_save (dst, do_cooked_read, src);
- else if (!dst->readonly_p)
- regcache_restore (dst, do_cooked_read, src);
- else
- regcache_cpy_no_passthrough (dst, src);
-}
-
-void
-regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src)
-{
- gdb_assert (src != NULL && dst != NULL);
- gdb_assert (src->descr->gdbarch == dst->descr->gdbarch);
- /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough
- move of data into a thread's regcache. Doing this would be silly
- - it would mean that regcache->register_status would be
- completely invalid. */
- gdb_assert (dst->readonly_p && src->readonly_p);
-
- memcpy (dst->registers, src->registers,
- dst->descr->sizeof_cooked_registers);
- memcpy (dst->register_status, src->register_status,
- dst->descr->sizeof_cooked_register_status);
+ dst->restore (src);
}
struct regcache *
regcache_dup (struct regcache *src)
{
- struct regcache *newbuf;
-
- newbuf = regcache_xmalloc (src->descr->gdbarch, get_regcache_aspace (src));
- regcache_cpy (newbuf, src);
- return newbuf;
+ return new regcache (regcache::readonly, *src);
}
-int
+enum register_status
regcache_register_status (const struct regcache *regcache, int regnum)
{
gdb_assert (regcache != NULL);
+ return regcache->get_register_status (regnum);
+}
+
+enum register_status
+regcache::get_register_status (int regnum) const
+{
gdb_assert (regnum >= 0);
- if (regcache->readonly_p)
- gdb_assert (regnum < regcache->descr->nr_cooked_registers);
+ if (m_readonly_p)
+ gdb_assert (regnum < m_descr->nr_cooked_registers);
else
- gdb_assert (regnum < regcache->descr->nr_raw_registers);
+ gdb_assert (regnum < m_descr->nr_raw_registers);
- return regcache->register_status[regnum];
+ return (enum register_status) m_register_status[regnum];
}
void
regcache_invalidate (struct regcache *regcache, int regnum)
{
gdb_assert (regcache != NULL);
- gdb_assert (regnum >= 0);
- gdb_assert (!regcache->readonly_p);
- gdb_assert (regnum < regcache->descr->nr_raw_registers);
- regcache->register_status[regnum] = REG_UNKNOWN;
+ regcache->invalidate (regnum);
}
+void
+regcache::invalidate (int regnum)
+{
+ gdb_assert (regnum >= 0);
+ gdb_assert (!m_readonly_p);
+ gdb_assert (regnum < m_descr->nr_raw_registers);
+ m_register_status[regnum] = REG_UNKNOWN;
+}
/* Global structure containing the current regcache. */
recording if the register values have been changed (eg. by the
user). Therefore all registers must be written back to the
target when appropriate. */
+std::forward_list<regcache *> regcache::current_regcache;
-struct regcache_list
+struct regcache *
+get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch,
+ struct address_space *aspace)
{
- struct regcache *regcache;
- struct regcache_list *next;
-};
+ for (const auto ®cache : regcache::current_regcache)
+ if (ptid_equal (regcache->ptid (), ptid) && regcache->arch () == gdbarch)
+ return regcache;
+
+ regcache *new_regcache = new regcache (gdbarch, aspace, false);
+
+ regcache::current_regcache.push_front (new_regcache);
+ new_regcache->set_ptid (ptid);
-static struct regcache_list *current_regcache;
+ return new_regcache;
+}
struct regcache *
get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch)
{
- struct regcache_list *list;
- struct regcache *new_regcache;
struct address_space *aspace;
- for (list = current_regcache; list; list = list->next)
- if (ptid_equal (list->regcache->ptid, ptid)
- && get_regcache_arch (list->regcache) == gdbarch)
- return list->regcache;
-
/* For the benefit of "maint print registers" & co when debugging an
executable, allow dumping the regcache even when there is no
thread selected (target_thread_address_space internal-errors if
? NULL
: target_thread_address_space (ptid));
- new_regcache = regcache_xmalloc_1 (gdbarch, aspace, 0);
- new_regcache->ptid = ptid;
-
- list = xmalloc (sizeof (struct regcache_list));
- list->regcache = new_regcache;
- list->next = current_regcache;
- current_regcache = list;
-
- return new_regcache;
+ return get_thread_arch_aspace_regcache (ptid, gdbarch, aspace);
}
static ptid_t current_thread_ptid;
return get_thread_regcache (inferior_ptid);
}
+/* See common/common-regcache.h. */
+
+struct regcache *
+get_thread_regcache_for_ptid (ptid_t ptid)
+{
+ return get_thread_regcache (ptid);
+}
/* Observer for the target_changed event. */
/* Update global variables old ptids to hold NEW_PTID if they were
holding OLD_PTID. */
-static void
-regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid)
+void
+regcache::regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid)
{
- struct regcache_list *list;
-
- for (list = current_regcache; list; list = list->next)
- if (ptid_equal (list->regcache->ptid, old_ptid))
- list->regcache->ptid = new_ptid;
+ for (auto ®cache : regcache::current_regcache)
+ {
+ if (ptid_equal (regcache->ptid (), old_ptid))
+ regcache->set_ptid (new_ptid);
+ }
}
/* Low level examining and depositing of registers.
void
registers_changed_ptid (ptid_t ptid)
{
- struct regcache_list *list, **list_link;
- int wildcard = ptid_equal (ptid, minus_one_ptid);
-
- list = current_regcache;
- list_link = ¤t_regcache;
- while (list)
+ for (auto oit = regcache::current_regcache.before_begin (),
+ it = std::next (oit);
+ it != regcache::current_regcache.end ();
+ )
{
- if (ptid_match (list->regcache->ptid, ptid))
+ if (ptid_match ((*it)->ptid (), ptid))
{
- struct regcache_list *dead = list;
-
- *list_link = list->next;
- regcache_xfree (list->regcache);
- list = *list_link;
- xfree (dead);
- continue;
+ delete *it;
+ it = regcache::current_regcache.erase_after (oit);
}
-
- list_link = &list->next;
- list = *list_link;
+ else
+ oit = it++;
}
- if (wildcard || ptid_equal (ptid, current_thread_ptid))
+ if (ptid_match (current_thread_ptid, ptid))
{
current_thread_ptid = null_ptid;
current_thread_arch = NULL;
}
- if (wildcard || ptid_equal (ptid, inferior_ptid))
+ if (ptid_match (inferior_ptid, ptid))
{
/* We just deleted the regcache of the current thread. Need to
forget about any frames we have cached, too. */
alloca (0);
}
-enum register_status
-regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf)
+void
+regcache_raw_update (struct regcache *regcache, int regnum)
{
- gdb_assert (regcache != NULL && buf != NULL);
- gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
+ gdb_assert (regcache != NULL);
+
+ regcache->raw_update (regnum);
+}
+
+void
+regcache::raw_update (int regnum)
+{
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
+
/* 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!
On the bright side, at least there is a regcache object. */
- if (!regcache->readonly_p
- && regcache_register_status (regcache, regnum) == REG_UNKNOWN)
- {
- struct cleanup *old_chain = save_inferior_ptid ();
- inferior_ptid = regcache->ptid;
- target_fetch_registers (regcache, regnum);
- do_cleanups (old_chain);
+ if (!m_readonly_p && get_register_status (regnum) == REG_UNKNOWN)
+ {
+ target_fetch_registers (this, regnum);
/* A number of targets can't access the whole set of raw
registers (because the debug API provides no means to get at
them). */
- if (regcache->register_status[regnum] == REG_UNKNOWN)
- regcache->register_status[regnum] = REG_UNAVAILABLE;
+ if (m_register_status[regnum] == REG_UNKNOWN)
+ m_register_status[regnum] = REG_UNAVAILABLE;
}
+}
- if (regcache->register_status[regnum] != REG_VALID)
- memset (buf, 0, regcache->descr->sizeof_register[regnum]);
+enum register_status
+regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf)
+{
+ return regcache->raw_read (regnum, buf);
+}
+
+enum register_status
+regcache::raw_read (int regnum, gdb_byte *buf)
+{
+ gdb_assert (buf != NULL);
+ raw_update (regnum);
+
+ if (m_register_status[regnum] != REG_VALID)
+ memset (buf, 0, m_descr->sizeof_register[regnum]);
else
- memcpy (buf, register_buffer (regcache, regnum),
- regcache->descr->sizeof_register[regnum]);
+ memcpy (buf, register_buffer (regnum),
+ m_descr->sizeof_register[regnum]);
- return regcache->register_status[regnum];
+ return (enum register_status) m_register_status[regnum];
}
enum register_status
regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val)
+{
+ gdb_assert (regcache != NULL);
+ return regcache->raw_read (regnum, val);
+}
+
+template<typename T, typename>
+enum register_status
+regcache::raw_read (int regnum, T *val)
{
gdb_byte *buf;
enum register_status status;
- gdb_assert (regcache != NULL);
- gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
- buf = alloca (regcache->descr->sizeof_register[regnum]);
- status = regcache_raw_read (regcache, regnum, buf);
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
+ buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]);
+ status = raw_read (regnum, buf);
if (status == REG_VALID)
- *val = extract_signed_integer
- (buf, regcache->descr->sizeof_register[regnum],
- gdbarch_byte_order (regcache->descr->gdbarch));
+ *val = extract_integer<T> (buf,
+ m_descr->sizeof_register[regnum],
+ gdbarch_byte_order (m_descr->gdbarch));
else
*val = 0;
return status;
regcache_raw_read_unsigned (struct regcache *regcache, int regnum,
ULONGEST *val)
{
- gdb_byte *buf;
- enum register_status status;
-
gdb_assert (regcache != NULL);
- gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
- buf = alloca (regcache->descr->sizeof_register[regnum]);
- status = regcache_raw_read (regcache, regnum, buf);
- if (status == REG_VALID)
- *val = extract_unsigned_integer
- (buf, regcache->descr->sizeof_register[regnum],
- gdbarch_byte_order (regcache->descr->gdbarch));
- else
- *val = 0;
- return status;
+ return regcache->raw_read (regnum, val);
}
void
regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val)
{
- void *buf;
-
gdb_assert (regcache != NULL);
- gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers);
- buf = alloca (regcache->descr->sizeof_register[regnum]);
- store_signed_integer (buf, regcache->descr->sizeof_register[regnum],
- gdbarch_byte_order (regcache->descr->gdbarch), val);
- regcache_raw_write (regcache, regnum, buf);
+ regcache->raw_write (regnum, val);
+}
+
+template<typename T, typename>
+void
+regcache::raw_write (int regnum, T val)
+{
+ gdb_byte *buf;
+
+ gdb_assert (regnum >=0 && regnum < m_descr->nr_raw_registers);
+ buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]);
+ store_integer (buf, m_descr->sizeof_register[regnum],
+ gdbarch_byte_order (m_descr->gdbarch), val);
+ raw_write (regnum, buf);
}
void
regcache_raw_write_unsigned (struct regcache *regcache, int regnum,
ULONGEST val)
{
- void *buf;
-
gdb_assert (regcache != NULL);
- gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers);
- buf = alloca (regcache->descr->sizeof_register[regnum]);
- store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum],
- gdbarch_byte_order (regcache->descr->gdbarch), val);
- regcache_raw_write (regcache, regnum, buf);
+ regcache->raw_write (regnum, val);
+}
+
+LONGEST
+regcache_raw_get_signed (struct regcache *regcache, int regnum)
+{
+ LONGEST value;
+ enum register_status status;
+
+ status = regcache_raw_read_signed (regcache, regnum, &value);
+ if (status == REG_UNAVAILABLE)
+ throw_error (NOT_AVAILABLE_ERROR,
+ _("Register %d is not available"), regnum);
+ return value;
}
enum register_status
regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf)
+{
+ return regcache->cooked_read (regnum, buf);
+}
+
+enum register_status
+regcache::cooked_read (int regnum, gdb_byte *buf)
{
gdb_assert (regnum >= 0);
- gdb_assert (regnum < regcache->descr->nr_cooked_registers);
- if (regnum < regcache->descr->nr_raw_registers)
- return regcache_raw_read (regcache, regnum, buf);
- else if (regcache->readonly_p
- && regcache->register_status[regnum] != REG_UNKNOWN)
+ gdb_assert (regnum < m_descr->nr_cooked_registers);
+ if (regnum < m_descr->nr_raw_registers)
+ return raw_read (regnum, buf);
+ else if (m_readonly_p
+ && m_register_status[regnum] != REG_UNKNOWN)
{
/* Read-only register cache, perhaps the cooked value was
cached? */
- struct gdbarch *gdbarch = regcache->descr->gdbarch;
-
- if (regcache->register_status[regnum] == REG_VALID)
- memcpy (buf, register_buffer (regcache, regnum),
- regcache->descr->sizeof_register[regnum]);
+ if (m_register_status[regnum] == REG_VALID)
+ memcpy (buf, register_buffer (regnum),
+ m_descr->sizeof_register[regnum]);
else
- memset (buf, 0, regcache->descr->sizeof_register[regnum]);
+ memset (buf, 0, m_descr->sizeof_register[regnum]);
- return regcache->register_status[regnum];
+ return (enum register_status) m_register_status[regnum];
}
- else if (gdbarch_pseudo_register_read_value_p (regcache->descr->gdbarch))
+ else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch))
{
struct value *mark, *computed;
enum register_status result = REG_VALID;
mark = value_mark ();
- computed = gdbarch_pseudo_register_read_value (regcache->descr->gdbarch,
- regcache, regnum);
+ computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch,
+ this, regnum);
if (value_entirely_available (computed))
memcpy (buf, value_contents_raw (computed),
- regcache->descr->sizeof_register[regnum]);
+ m_descr->sizeof_register[regnum]);
else
{
- memset (buf, 0, regcache->descr->sizeof_register[regnum]);
+ memset (buf, 0, m_descr->sizeof_register[regnum]);
result = REG_UNAVAILABLE;
}
return result;
}
else
- return gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache,
+ return gdbarch_pseudo_register_read (m_descr->gdbarch, this,
regnum, buf);
}
struct value *
regcache_cooked_read_value (struct regcache *regcache, int regnum)
+{
+ return regcache->cooked_read_value (regnum);
+}
+
+struct value *
+regcache::cooked_read_value (int regnum)
{
gdb_assert (regnum >= 0);
- gdb_assert (regnum < regcache->descr->nr_cooked_registers);
+ gdb_assert (regnum < m_descr->nr_cooked_registers);
- if (regnum < regcache->descr->nr_raw_registers
- || (regcache->readonly_p
- && regcache->register_status[regnum] != REG_UNKNOWN)
- || !gdbarch_pseudo_register_read_value_p (regcache->descr->gdbarch))
+ if (regnum < m_descr->nr_raw_registers
+ || (m_readonly_p && m_register_status[regnum] != REG_UNKNOWN)
+ || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch))
{
struct value *result;
- result = allocate_value (register_type (regcache->descr->gdbarch,
- regnum));
+ result = allocate_value (register_type (m_descr->gdbarch, regnum));
VALUE_LVAL (result) = lval_register;
VALUE_REGNUM (result) = regnum;
/* It is more efficient in general to do this delegation in this
direction than in the other one, even though the value-based
API is preferred. */
- if (regcache_cooked_read (regcache, regnum,
- value_contents_raw (result)) == REG_UNAVAILABLE)
+ if (cooked_read (regnum,
+ value_contents_raw (result)) == REG_UNAVAILABLE)
mark_value_bytes_unavailable (result, 0,
TYPE_LENGTH (value_type (result)));
return result;
}
else
- return gdbarch_pseudo_register_read_value (regcache->descr->gdbarch,
- regcache, regnum);
+ return gdbarch_pseudo_register_read_value (m_descr->gdbarch,
+ this, regnum);
}
enum register_status
regcache_cooked_read_signed (struct regcache *regcache, int regnum,
LONGEST *val)
+{
+ gdb_assert (regcache != NULL);
+ return regcache->cooked_read (regnum, val);
+}
+
+template<typename T, typename>
+enum register_status
+regcache::cooked_read (int regnum, T *val)
{
enum register_status status;
gdb_byte *buf;
- gdb_assert (regcache != NULL);
- gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers);
- buf = alloca (regcache->descr->sizeof_register[regnum]);
- status = regcache_cooked_read (regcache, regnum, buf);
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers);
+ buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]);
+ status = cooked_read (regnum, buf);
if (status == REG_VALID)
- *val = extract_signed_integer
- (buf, regcache->descr->sizeof_register[regnum],
- gdbarch_byte_order (regcache->descr->gdbarch));
+ *val = extract_integer<T> (buf, m_descr->sizeof_register[regnum],
+ gdbarch_byte_order (m_descr->gdbarch));
else
*val = 0;
return status;
regcache_cooked_read_unsigned (struct regcache *regcache, int regnum,
ULONGEST *val)
{
- enum register_status status;
- gdb_byte *buf;
-
gdb_assert (regcache != NULL);
- gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers);
- buf = alloca (regcache->descr->sizeof_register[regnum]);
- status = regcache_cooked_read (regcache, regnum, buf);
- if (status == REG_VALID)
- *val = extract_unsigned_integer
- (buf, regcache->descr->sizeof_register[regnum],
- gdbarch_byte_order (regcache->descr->gdbarch));
- else
- *val = 0;
- return status;
+ return regcache->cooked_read (regnum, val);
}
void
regcache_cooked_write_signed (struct regcache *regcache, int regnum,
LONGEST val)
{
- void *buf;
-
gdb_assert (regcache != NULL);
- gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers);
- buf = alloca (regcache->descr->sizeof_register[regnum]);
- store_signed_integer (buf, regcache->descr->sizeof_register[regnum],
- gdbarch_byte_order (regcache->descr->gdbarch), val);
- regcache_cooked_write (regcache, regnum, buf);
+ regcache->cooked_write (regnum, val);
+}
+
+template<typename T, typename>
+void
+regcache::cooked_write (int regnum, T val)
+{
+ gdb_byte *buf;
+
+ gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers);
+ buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]);
+ store_integer (buf, m_descr->sizeof_register[regnum],
+ gdbarch_byte_order (m_descr->gdbarch), val);
+ cooked_write (regnum, buf);
}
void
regcache_cooked_write_unsigned (struct regcache *regcache, int regnum,
ULONGEST val)
{
- void *buf;
-
gdb_assert (regcache != NULL);
- gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers);
- buf = alloca (regcache->descr->sizeof_register[regnum]);
- store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum],
- gdbarch_byte_order (regcache->descr->gdbarch), val);
- regcache_cooked_write (regcache, regnum, buf);
+ regcache->cooked_write (regnum, val);
+}
+
+/* See regcache.h. */
+
+void
+regcache_raw_set_cached_value (struct regcache *regcache, int regnum,
+ const gdb_byte *buf)
+{
+ regcache->raw_set_cached_value (regnum, buf);
+}
+
+void
+regcache::raw_set_cached_value (int regnum, const gdb_byte *buf)
+{
+ memcpy (register_buffer (regnum), buf,
+ m_descr->sizeof_register[regnum]);
+ m_register_status[regnum] = REG_VALID;
}
void
regcache_raw_write (struct regcache *regcache, int regnum,
const gdb_byte *buf)
+{
+ gdb_assert (regcache != NULL && buf != NULL);
+ regcache->raw_write (regnum, buf);
+}
+
+void
+regcache::raw_write (int regnum, const gdb_byte *buf)
{
struct cleanup *old_chain;
- gdb_assert (regcache != NULL && buf != NULL);
- gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
- gdb_assert (!regcache->readonly_p);
+ gdb_assert (buf != NULL);
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
+ gdb_assert (!m_readonly_p);
/* 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 (gdbarch_cannot_store_register (get_regcache_arch (regcache), regnum))
+ if (gdbarch_cannot_store_register (arch (), regnum))
return;
/* If we have a valid copy of the register, and new value == old
value, then don't bother doing the actual store. */
- if (regcache_register_status (regcache, regnum) == REG_VALID
- && (memcmp (register_buffer (regcache, regnum), buf,
- regcache->descr->sizeof_register[regnum]) == 0))
+ if (get_register_status (regnum) == REG_VALID
+ && (memcmp (register_buffer (regnum), buf,
+ m_descr->sizeof_register[regnum]) == 0))
return;
- old_chain = save_inferior_ptid ();
- inferior_ptid = regcache->ptid;
+ target_prepare_to_store (this);
+ raw_set_cached_value (regnum, buf);
+
+ /* Register a cleanup function for invalidating the register after it is
+ written, in case of a failure. */
+ old_chain = make_cleanup_regcache_invalidate (this, regnum);
- target_prepare_to_store (regcache);
- memcpy (register_buffer (regcache, regnum), buf,
- regcache->descr->sizeof_register[regnum]);
- regcache->register_status[regnum] = REG_VALID;
- target_store_registers (regcache, regnum);
+ target_store_registers (this, regnum);
- do_cleanups (old_chain);
+ /* The target did not throw an error so we can discard invalidating the
+ register and restore the cleanup chain to what it was. */
+ discard_cleanups (old_chain);
}
void
regcache_cooked_write (struct regcache *regcache, int regnum,
const gdb_byte *buf)
+{
+ regcache->cooked_write (regnum, buf);
+}
+
+void
+regcache::cooked_write (int regnum, const gdb_byte *buf)
{
gdb_assert (regnum >= 0);
- gdb_assert (regnum < regcache->descr->nr_cooked_registers);
- if (regnum < regcache->descr->nr_raw_registers)
- regcache_raw_write (regcache, regnum, buf);
+ gdb_assert (regnum < m_descr->nr_cooked_registers);
+ if (regnum < m_descr->nr_raw_registers)
+ raw_write (regnum, buf);
else
- gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache,
+ gdbarch_pseudo_register_write (m_descr->gdbarch, this,
regnum, buf);
}
typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum,
const void *buf);
-static enum register_status
-regcache_xfer_part (struct regcache *regcache, int regnum,
- int offset, int len, void *in, const void *out,
- enum register_status (*read) (struct regcache *regcache,
- int regnum,
- gdb_byte *buf),
- void (*write) (struct regcache *regcache, int regnum,
- const gdb_byte *buf))
-{
- struct regcache_descr *descr = regcache->descr;
- gdb_byte reg[MAX_REGISTER_SIZE];
-
- gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]);
- gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]);
+enum register_status
+regcache::xfer_part (int regnum, int offset, int len, void *in,
+ const void *out,
+ enum register_status (*read) (struct regcache *regcache,
+ int regnum,
+ gdb_byte *buf),
+ void (*write) (struct regcache *regcache, int regnum,
+ const gdb_byte *buf))
+{
+ struct gdbarch *gdbarch = arch ();
+ gdb_byte *reg = (gdb_byte *) alloca (register_size (gdbarch, regnum));
+
+ gdb_assert (offset >= 0 && offset <= m_descr->sizeof_register[regnum]);
+ gdb_assert (len >= 0 && offset + len <= m_descr->sizeof_register[regnum]);
/* Something to do? */
if (offset + len == 0)
return REG_VALID;
/* Read (when needed) ... */
if (in != NULL
|| offset > 0
- || offset + len < descr->sizeof_register[regnum])
+ || offset + len < m_descr->sizeof_register[regnum])
{
enum register_status status;
gdb_assert (read != NULL);
- status = read (regcache, regnum, reg);
+ status = read (this, regnum, reg);
if (status != REG_VALID)
return status;
}
if (out != NULL)
{
gdb_assert (write != NULL);
- write (regcache, regnum, reg);
+ write (this, regnum, reg);
}
return REG_VALID;
regcache_raw_read_part (struct regcache *regcache, int regnum,
int offset, int len, gdb_byte *buf)
{
- struct regcache_descr *descr = regcache->descr;
+ return regcache->raw_read_part (regnum, offset, len, buf);
+}
- gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers);
- return regcache_xfer_part (regcache, regnum, offset, len, buf, NULL,
- regcache_raw_read, regcache_raw_write);
+enum register_status
+regcache::raw_read_part (int regnum, int offset, int len, gdb_byte *buf)
+{
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
+ return xfer_part (regnum, offset, len, buf, NULL,
+ regcache_raw_read, regcache_raw_write);
}
void
regcache_raw_write_part (struct regcache *regcache, int regnum,
int offset, int len, const gdb_byte *buf)
{
- struct regcache_descr *descr = regcache->descr;
+ regcache->raw_write_part (regnum, offset, len, buf);
+}
- gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers);
- regcache_xfer_part (regcache, regnum, offset, len, NULL, buf,
- regcache_raw_read, regcache_raw_write);
+void
+regcache::raw_write_part (int regnum, int offset, int len,
+ const gdb_byte *buf)
+{
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
+ xfer_part (regnum, offset, len, NULL, buf, regcache_raw_read,
+ regcache_raw_write);
}
enum register_status
regcache_cooked_read_part (struct regcache *regcache, int regnum,
int offset, int len, gdb_byte *buf)
{
- struct regcache_descr *descr = regcache->descr;
+ return regcache->cooked_read_part (regnum, offset, len, buf);
+}
- gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
- return regcache_xfer_part (regcache, regnum, offset, len, buf, NULL,
- regcache_cooked_read, regcache_cooked_write);
+
+enum register_status
+regcache::cooked_read_part (int regnum, int offset, int len, gdb_byte *buf)
+{
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers);
+ return xfer_part (regnum, offset, len, buf, NULL,
+ regcache_cooked_read, regcache_cooked_write);
}
void
regcache_cooked_write_part (struct regcache *regcache, int regnum,
int offset, int len, const gdb_byte *buf)
{
- struct regcache_descr *descr = regcache->descr;
+ regcache->cooked_write_part (regnum, offset, len, buf);
+}
- gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
- regcache_xfer_part (regcache, regnum, offset, len, NULL, buf,
- regcache_cooked_read, regcache_cooked_write);
+void
+regcache::cooked_write_part (int regnum, int offset, int len,
+ const gdb_byte *buf)
+{
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers);
+ xfer_part (regnum, offset, len, NULL, buf,
+ regcache_cooked_read, regcache_cooked_write);
}
/* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */
void
regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf)
+{
+ gdb_assert (regcache != NULL);
+ regcache->raw_supply (regnum, buf);
+}
+
+void
+regcache::raw_supply (int regnum, const void *buf)
{
void *regbuf;
size_t size;
- gdb_assert (regcache != NULL);
- gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
- gdb_assert (!regcache->readonly_p);
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
+ gdb_assert (!m_readonly_p);
- regbuf = register_buffer (regcache, regnum);
- size = regcache->descr->sizeof_register[regnum];
+ regbuf = register_buffer (regnum);
+ size = m_descr->sizeof_register[regnum];
if (buf)
{
memcpy (regbuf, buf, size);
- regcache->register_status[regnum] = REG_VALID;
+ m_register_status[regnum] = REG_VALID;
}
else
{
in case the register value manages to escape somewhere (due
to a bug, no less). */
memset (regbuf, 0, size);
- regcache->register_status[regnum] = REG_UNAVAILABLE;
+ m_register_status[regnum] = REG_UNAVAILABLE;
}
}
+/* Supply register REGNUM to REGCACHE. Value to supply is an integer stored at
+ address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED. If
+ the register size is greater than ADDR_LEN, then the integer will be sign or
+ zero extended. If the register size is smaller than the integer, then the
+ most significant bytes of the integer will be truncated. */
+
+void
+regcache::raw_supply_integer (int regnum, const gdb_byte *addr, int addr_len,
+ bool is_signed)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch);
+ gdb_byte *regbuf;
+ size_t regsize;
+
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
+ gdb_assert (!m_readonly_p);
+
+ regbuf = register_buffer (regnum);
+ regsize = m_descr->sizeof_register[regnum];
+
+ copy_integer_to_size (regbuf, regsize, addr, addr_len, is_signed,
+ byte_order);
+ m_register_status[regnum] = REG_VALID;
+}
+
+/* Supply register REGNUM with zeroed value to REGCACHE. This is not the same
+ as calling raw_supply with NULL (which will set the state to
+ unavailable). */
+
+void
+regcache::raw_supply_zeroed (int regnum)
+{
+ void *regbuf;
+ size_t size;
+
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
+ gdb_assert (!m_readonly_p);
+
+ regbuf = register_buffer (regnum);
+ size = m_descr->sizeof_register[regnum];
+
+ memset (regbuf, 0, size);
+ m_register_status[regnum] = REG_VALID;
+}
+
/* Collect register REGNUM from REGCACHE and store its contents in BUF. */
void
regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf)
+{
+ gdb_assert (regcache != NULL && buf != NULL);
+ regcache->raw_collect (regnum, buf);
+}
+
+void
+regcache::raw_collect (int regnum, void *buf) const
{
const void *regbuf;
size_t size;
- gdb_assert (regcache != NULL && buf != NULL);
- gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
+ gdb_assert (buf != NULL);
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
- regbuf = register_buffer (regcache, regnum);
- size = regcache->descr->sizeof_register[regnum];
+ regbuf = register_buffer (regnum);
+ size = m_descr->sizeof_register[regnum];
memcpy (buf, regbuf, size);
}
+/* Transfer a single or all registers belonging to a certain register
+ set to or from a buffer. This is the main worker function for
+ regcache_supply_regset and regcache_collect_regset. */
+
+/* Collect register REGNUM from REGCACHE. Store collected value as an integer
+ at address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED.
+ If ADDR_LEN is greater than the register size, then the integer will be sign
+ or zero extended. If ADDR_LEN is smaller than the register size, then the
+ most significant bytes of the integer will be truncated. */
+
+void
+regcache::raw_collect_integer (int regnum, gdb_byte *addr, int addr_len,
+ bool is_signed) const
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch);
+ const gdb_byte *regbuf;
+ size_t regsize;
+
+ gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers);
+
+ regbuf = register_buffer (regnum);
+ regsize = m_descr->sizeof_register[regnum];
+
+ copy_integer_to_size (addr, addr_len, regbuf, regsize, is_signed,
+ byte_order);
+}
+
+void
+regcache::transfer_regset (const struct regset *regset,
+ struct regcache *out_regcache,
+ int regnum, const void *in_buf,
+ void *out_buf, size_t size) const
+{
+ const struct regcache_map_entry *map;
+ int offs = 0, count;
+
+ for (map = (const struct regcache_map_entry *) regset->regmap;
+ (count = map->count) != 0;
+ map++)
+ {
+ int regno = map->regno;
+ int slot_size = map->size;
+
+ if (slot_size == 0 && regno != REGCACHE_MAP_SKIP)
+ slot_size = m_descr->sizeof_register[regno];
+
+ if (regno == REGCACHE_MAP_SKIP
+ || (regnum != -1
+ && (regnum < regno || regnum >= regno + count)))
+ offs += count * slot_size;
+
+ else if (regnum == -1)
+ for (; count--; regno++, offs += slot_size)
+ {
+ if (offs + slot_size > size)
+ break;
+
+ if (out_buf)
+ raw_collect (regno, (gdb_byte *) out_buf + offs);
+ else
+ out_regcache->raw_supply (regno, in_buf
+ ? (const gdb_byte *) in_buf + offs
+ : NULL);
+ }
+ else
+ {
+ /* Transfer a single register and return. */
+ offs += (regnum - regno) * slot_size;
+ if (offs + slot_size > size)
+ return;
+
+ if (out_buf)
+ raw_collect (regnum, (gdb_byte *) out_buf + offs);
+ else
+ out_regcache->raw_supply (regnum, in_buf
+ ? (const gdb_byte *) in_buf + offs
+ : NULL);
+ return;
+ }
+ }
+}
+
+/* Supply register REGNUM from BUF to REGCACHE, using the register map
+ in REGSET. If REGNUM is -1, do this for all registers in REGSET.
+ If BUF is NULL, set the register(s) to "unavailable" status. */
+
+void
+regcache_supply_regset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *buf, size_t size)
+{
+ regcache->supply_regset (regset, regnum, buf, size);
+}
+
+void
+regcache::supply_regset (const struct regset *regset,
+ int regnum, const void *buf, size_t size)
+{
+ transfer_regset (regset, this, regnum, buf, NULL, size);
+}
+
+/* Collect register REGNUM from REGCACHE to BUF, using the register
+ map in REGSET. If REGNUM is -1, do this for all registers in
+ REGSET. */
+
+void
+regcache_collect_regset (const struct regset *regset,
+ const struct regcache *regcache,
+ int regnum, void *buf, size_t size)
+{
+ regcache->collect_regset (regset, regnum, buf, size);
+}
+
+void
+regcache::collect_regset (const struct regset *regset,
+ int regnum, void *buf, size_t size) const
+{
+ transfer_regset (regset, NULL, regnum, NULL, buf, size);
+}
+
/* Special handling for register PC. */
reinit_frame_cache ();
}
+void
+regcache::debug_print_register (const char *func, int regno)
+{
+ struct gdbarch *gdbarch = arch ();
+
+ fprintf_unfiltered (gdb_stdlog, "%s ", func);
+ if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
+ && gdbarch_register_name (gdbarch, regno) != NULL
+ && gdbarch_register_name (gdbarch, regno)[0] != '\0')
+ fprintf_unfiltered (gdb_stdlog, "(%s)",
+ gdbarch_register_name (gdbarch, regno));
+ else
+ fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
+ if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
+ {
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int size = register_size (gdbarch, regno);
+ gdb_byte *buf = register_buffer (regno);
+
+ fprintf_unfiltered (gdb_stdlog, " = ");
+ for (int i = 0; i < size; i++)
+ {
+ fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
+ }
+ if (size <= sizeof (LONGEST))
+ {
+ ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
+
+ fprintf_unfiltered (gdb_stdlog, " %s %s",
+ core_addr_to_string_nz (val), plongest (val));
+ }
+ }
+ fprintf_unfiltered (gdb_stdlog, "\n");
+}
static void
reg_flush_command (char *command, int from_tty)
printf_filtered (_("Register cache flushed.\n"));
}
-static void
-dump_endian_bytes (struct ui_file *file, enum bfd_endian endian,
- const unsigned char *buf, long len)
-{
- int i;
-
- switch (endian)
- {
- case BFD_ENDIAN_BIG:
- for (i = 0; i < len; i++)
- fprintf_unfiltered (file, "%02x", buf[i]);
- break;
- case BFD_ENDIAN_LITTLE:
- for (i = len - 1; i >= 0; i--)
- fprintf_unfiltered (file, "%02x", buf[i]);
- break;
- default:
- internal_error (__FILE__, __LINE__, _("Bad switch"));
- }
-}
-
-enum regcache_dump_what
-{
- regcache_dump_none, regcache_dump_raw,
- regcache_dump_cooked, regcache_dump_groups,
- regcache_dump_remote
-};
-
-static void
-regcache_dump (struct regcache *regcache, struct ui_file *file,
- enum regcache_dump_what what_to_dump)
+void
+regcache::dump (ui_file *file, enum regcache_dump_what what_to_dump)
{
struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
- struct gdbarch *gdbarch = regcache->descr->gdbarch;
+ struct gdbarch *gdbarch = m_descr->gdbarch;
int regnum;
int footnote_nr = 0;
int footnote_register_size = 0;
int footnote_register_offset = 0;
int footnote_register_type_name_null = 0;
long register_offset = 0;
- unsigned char buf[MAX_REGISTER_SIZE];
#if 0
fprintf_unfiltered (file, "nr_raw_registers %d\n",
- regcache->descr->nr_raw_registers);
+ m_descr->nr_raw_registers);
fprintf_unfiltered (file, "nr_cooked_registers %d\n",
- regcache->descr->nr_cooked_registers);
+ m_descr->nr_cooked_registers);
fprintf_unfiltered (file, "sizeof_raw_registers %ld\n",
- regcache->descr->sizeof_raw_registers);
+ m_descr->sizeof_raw_registers);
fprintf_unfiltered (file, "sizeof_raw_register_status %ld\n",
- regcache->descr->sizeof_raw_register_status);
+ m_descr->sizeof_raw_register_status);
fprintf_unfiltered (file, "gdbarch_num_regs %d\n",
gdbarch_num_regs (gdbarch));
fprintf_unfiltered (file, "gdbarch_num_pseudo_regs %d\n",
gdbarch_num_pseudo_regs (gdbarch));
#endif
- gdb_assert (regcache->descr->nr_cooked_registers
+ gdb_assert (m_descr->nr_cooked_registers
== (gdbarch_num_regs (gdbarch)
+ gdbarch_num_pseudo_regs (gdbarch)));
- for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++)
+ for (regnum = -1; regnum < m_descr->nr_cooked_registers; regnum++)
{
/* Name. */
if (regnum < 0)
else
{
fprintf_unfiltered (file, " %6ld",
- regcache->descr->register_offset[regnum]);
- if (register_offset != regcache->descr->register_offset[regnum]
+ m_descr->register_offset[regnum]);
+ if (register_offset != m_descr->register_offset[regnum]
|| (regnum > 0
- && (regcache->descr->register_offset[regnum]
- != (regcache->descr->register_offset[regnum - 1]
- + regcache->descr->sizeof_register[regnum - 1])))
+ && (m_descr->register_offset[regnum]
+ != (m_descr->register_offset[regnum - 1]
+ + m_descr->sizeof_register[regnum - 1])))
)
{
if (!footnote_register_offset)
}
else
fprintf_unfiltered (file, " ");
- register_offset = (regcache->descr->register_offset[regnum]
- + regcache->descr->sizeof_register[regnum]);
+ register_offset = (m_descr->register_offset[regnum]
+ + m_descr->sizeof_register[regnum]);
}
/* Size. */
if (regnum < 0)
fprintf_unfiltered (file, " %5s ", "Size");
else
- fprintf_unfiltered (file, " %5ld",
- regcache->descr->sizeof_register[regnum]);
+ fprintf_unfiltered (file, " %5ld", m_descr->sizeof_register[regnum]);
/* Type. */
{
{
static const char blt[] = "builtin_type";
- t = TYPE_NAME (register_type (regcache->descr->gdbarch, regnum));
+ t = TYPE_NAME (register_type (arch (), regnum));
if (t == NULL)
{
char *n;
t = n;
}
/* Chop a leading builtin_type. */
- if (strncmp (t, blt, strlen (blt)) == 0)
+ if (startswith (t, blt))
t += strlen (blt);
}
fprintf_unfiltered (file, " %-15s", t);
{
if (regnum < 0)
fprintf_unfiltered (file, "Raw value");
- else if (regnum >= regcache->descr->nr_raw_registers)
+ else if (regnum >= m_descr->nr_raw_registers)
fprintf_unfiltered (file, "<cooked>");
- else if (regcache_register_status (regcache, regnum) == REG_UNKNOWN)
+ else if (get_register_status (regnum) == REG_UNKNOWN)
fprintf_unfiltered (file, "<invalid>");
- else if (regcache_register_status (regcache, regnum) == REG_UNAVAILABLE)
+ else if (get_register_status (regnum) == REG_UNAVAILABLE)
fprintf_unfiltered (file, "<unavailable>");
else
{
- regcache_raw_read (regcache, regnum, buf);
- fprintf_unfiltered (file, "0x");
- dump_endian_bytes (file,
- gdbarch_byte_order (gdbarch), buf,
- regcache->descr->sizeof_register[regnum]);
+ raw_update (regnum);
+ print_hex_chars (file, register_buffer (regnum),
+ m_descr->sizeof_register[regnum],
+ gdbarch_byte_order (gdbarch), true);
}
}
fprintf_unfiltered (file, "Cooked value");
else
{
+ const gdb_byte *buf = NULL;
enum register_status status;
+ struct value *value = NULL;
+
+ if (regnum < m_descr->nr_raw_registers)
+ {
+ raw_update (regnum);
+ status = get_register_status (regnum);
+ buf = register_buffer (regnum);
+ }
+ else
+ {
+ value = cooked_read_value (regnum);
+
+ if (!value_optimized_out (value)
+ && value_entirely_available (value))
+ {
+ status = REG_VALID;
+ buf = value_contents_all (value);
+ }
+ else
+ status = REG_UNAVAILABLE;
+ }
- status = regcache_cooked_read (regcache, regnum, buf);
if (status == REG_UNKNOWN)
fprintf_unfiltered (file, "<invalid>");
else if (status == REG_UNAVAILABLE)
fprintf_unfiltered (file, "<unavailable>");
else
+ print_hex_chars (file, buf,
+ m_descr->sizeof_register[regnum],
+ gdbarch_byte_order (gdbarch), true);
+
+ if (value != NULL)
{
- fprintf_unfiltered (file, "0x");
- dump_endian_bytes (file,
- gdbarch_byte_order (gdbarch), buf,
- regcache->descr->sizeof_register[regnum]);
+ release_value (value);
+ value_free (value);
}
}
}
{
fprintf_unfiltered (file, "Rmt Nr g/G Offset");
}
- else if (regnum < regcache->descr->nr_raw_registers)
+ else if (regnum < m_descr->nr_raw_registers)
{
int pnum, poffset;
- if (remote_register_number_and_offset (get_regcache_arch (regcache), regnum,
+ if (remote_register_number_and_offset (arch (), regnum,
&pnum, &poffset))
fprintf_unfiltered (file, "%7d %11d", pnum, poffset);
}
regcache_print (char *args, enum regcache_dump_what what_to_dump)
{
if (args == NULL)
- regcache_dump (get_current_regcache (), gdb_stdout, what_to_dump);
+ get_current_regcache ()->dump (gdb_stdout, what_to_dump);
else
{
- struct cleanup *cleanups;
- struct ui_file *file = gdb_fopen (args, "w");
+ stdio_file file;
- if (file == NULL)
+ if (!file.open (args, "w"))
perror_with_name (_("maintenance print architecture"));
- cleanups = make_cleanup_ui_file_delete (file);
- regcache_dump (get_current_regcache (), file, what_to_dump);
- do_cleanups (cleanups);
+ get_current_regcache ()->dump (&file, what_to_dump);
}
}
regcache_print (args, regcache_dump_remote);
}
+#if GDB_SELF_TEST
+#include "selftest.h"
+
+namespace selftests {
+
+class regcache_access : public regcache
+{
+public:
+
+ /* Return the number of elements in current_regcache. */
+
+ static size_t
+ current_regcache_size ()
+ {
+ return std::distance (regcache::current_regcache.begin (),
+ regcache::current_regcache.end ());
+ }
+};
+
+static void
+current_regcache_test (void)
+{
+ /* It is empty at the start. */
+ SELF_CHECK (regcache_access::current_regcache_size () == 0);
+
+ ptid_t ptid1 (1), ptid2 (2), ptid3 (3);
+
+ /* Get regcache from ptid1, a new regcache is added to
+ current_regcache. */
+ regcache *regcache = get_thread_arch_aspace_regcache (ptid1,
+ target_gdbarch (),
+ NULL);
+
+ SELF_CHECK (regcache != NULL);
+ SELF_CHECK (regcache->ptid () == ptid1);
+ SELF_CHECK (regcache_access::current_regcache_size () == 1);
+
+ /* Get regcache from ptid2, a new regcache is added to
+ current_regcache. */
+ regcache = get_thread_arch_aspace_regcache (ptid2,
+ target_gdbarch (),
+ NULL);
+ SELF_CHECK (regcache != NULL);
+ SELF_CHECK (regcache->ptid () == ptid2);
+ SELF_CHECK (regcache_access::current_regcache_size () == 2);
+
+ /* Get regcache from ptid3, a new regcache is added to
+ current_regcache. */
+ regcache = get_thread_arch_aspace_regcache (ptid3,
+ target_gdbarch (),
+ NULL);
+ SELF_CHECK (regcache != NULL);
+ SELF_CHECK (regcache->ptid () == ptid3);
+ SELF_CHECK (regcache_access::current_regcache_size () == 3);
+
+ /* Get regcache from ptid2 again, nothing is added to
+ current_regcache. */
+ regcache = get_thread_arch_aspace_regcache (ptid2,
+ target_gdbarch (),
+ NULL);
+ SELF_CHECK (regcache != NULL);
+ SELF_CHECK (regcache->ptid () == ptid2);
+ SELF_CHECK (regcache_access::current_regcache_size () == 3);
+
+ /* Mark ptid2 is changed, so regcache of ptid2 should be removed from
+ current_regcache. */
+ registers_changed_ptid (ptid2);
+ SELF_CHECK (regcache_access::current_regcache_size () == 2);
+}
+
+} // namespace selftests
+#endif /* GDB_SELF_TEST */
+
extern initialize_file_ftype _initialize_regcache; /* -Wmissing-prototype */
void
= gdbarch_data_register_post_init (init_regcache_descr);
observer_attach_target_changed (regcache_observer_target_changed);
- observer_attach_thread_ptid_changed (regcache_thread_ptid_changed);
+ observer_attach_thread_ptid_changed (regcache::regcache_thread_ptid_changed);
add_com ("flushregs", class_maintenance, reg_flush_command,
_("Force gdb to flush its register cache (maintainer command)"));
remote register number and buffer offset in the g/G packets.\n\
Takes an optional file parameter."),
&maintenanceprintlist);
-
+#if GDB_SELF_TEST
+ selftests::register_test (selftests::current_regcache_test);
+#endif
}
projects / deliverable / binutils-gdb.git / blobdiff