/* Register support routines for the remote server for GDB.
- Copyright (C) 2001-2014 Free Software Foundation, Inc.
+ Copyright (C) 2001-2019 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbthread.h"
#include "tdesc.h"
#include "rsp-low.h"
-
-#include <stdlib.h>
-#include <string.h>
-
#ifndef IN_PROCESS_AGENT
struct regcache *
{
struct regcache *regcache;
- regcache = (struct regcache *) inferior_regcache_data (thread);
+ regcache = thread_regcache_data (thread);
/* Threads' regcaches are created lazily, because biarch targets add
the main thread/lwp before seeing it stop for the first time, and
{
struct process_info *proc = get_thread_process (thread);
- if (proc->tdesc == NULL)
- fatal ("no target description");
+ gdb_assert (proc->tdesc != NULL);
regcache = new_register_cache (proc->tdesc);
- set_inferior_regcache_data (thread, regcache);
+ set_thread_regcache_data (thread, regcache);
}
if (fetch && regcache->registers_valid == 0)
{
- struct thread_info *saved_inferior = current_inferior;
+ struct thread_info *saved_thread = current_thread;
- current_inferior = thread;
+ current_thread = thread;
+ /* Invalidate all registers, to prevent stale left-overs. */
+ memset (regcache->register_status, REG_UNAVAILABLE,
+ regcache->tdesc->reg_defs.size ());
fetch_inferior_registers (regcache, -1);
- current_inferior = saved_inferior;
+ current_thread = saved_thread;
regcache->registers_valid = 1;
}
return regcache;
}
+/* See common/common-regcache.h. */
+
+struct regcache *
+get_thread_regcache_for_ptid (ptid_t ptid)
+{
+ return get_thread_regcache (find_thread_ptid (ptid), 1);
+}
+
void
regcache_invalidate_thread (struct thread_info *thread)
{
struct regcache *regcache;
- regcache = (struct regcache *) inferior_regcache_data (thread);
+ regcache = thread_regcache_data (thread);
if (regcache == NULL)
return;
if (regcache->registers_valid)
{
- struct thread_info *saved_inferior = current_inferior;
+ struct thread_info *saved_thread = current_thread;
- current_inferior = thread;
+ current_thread = thread;
store_inferior_registers (regcache, -1);
- current_inferior = saved_inferior;
+ current_thread = saved_thread;
}
regcache->registers_valid = 0;
}
-static int
-regcache_invalidate_one (struct inferior_list_entry *entry,
- void *pid_p)
-{
- struct thread_info *thread = (struct thread_info *) entry;
- int pid = *(int *) pid_p;
+/* See regcache.h. */
+void
+regcache_invalidate_pid (int pid)
+{
/* Only invalidate the regcaches of threads of this process. */
- if (ptid_get_pid (entry->id) == pid)
- regcache_invalidate_thread (thread);
-
- return 0;
+ for_each_thread (pid, regcache_invalidate_thread);
}
+/* See regcache.h. */
+
void
regcache_invalidate (void)
{
/* Only update the threads of the current process. */
- int pid = ptid_get_pid (current_inferior->entry.id);
+ int pid = current_thread->id.pid ();
- find_inferior (&all_threads, regcache_invalidate_one, &pid);
+ regcache_invalidate_pid (pid);
}
#endif
fetches. This way they'll read as zero instead of
garbage. */
regcache->tdesc = tdesc;
- regcache->registers = xcalloc (1, tdesc->registers_size);
+ regcache->registers
+ = (unsigned char *) xcalloc (1, tdesc->registers_size);
regcache->registers_owned = 1;
- regcache->register_status = xcalloc (1, tdesc->num_registers);
- gdb_assert (REG_UNAVAILABLE == 0);
+ regcache->register_status
+ = (unsigned char *) xmalloc (tdesc->reg_defs.size ());
+ memset ((void *) regcache->register_status, REG_UNAVAILABLE,
+ tdesc->reg_defs.size ());
#else
- fatal ("init_register_cache: can't allocate memory from the heap");
+ gdb_assert_not_reached ("can't allocate memory from the heap");
#endif
}
else
struct regcache *
new_register_cache (const struct target_desc *tdesc)
{
- struct regcache *regcache;
+ struct regcache *regcache = new struct regcache;
gdb_assert (tdesc->registers_size != 0);
- regcache = xmalloc (sizeof (*regcache));
return init_register_cache (regcache, tdesc, NULL);
}
if (regcache->registers_owned)
free (regcache->registers);
free (regcache->register_status);
- free (regcache);
+ delete regcache;
}
}
#ifndef IN_PROCESS_AGENT
if (dst->register_status != NULL && src->register_status != NULL)
memcpy (dst->register_status, src->register_status,
- src->tdesc->num_registers);
+ src->tdesc->reg_defs.size ());
#endif
dst->registers_valid = src->registers_valid;
}
+/* Return a reference to the description of register N. */
+
+static const struct reg &
+find_register_by_number (const struct target_desc *tdesc, int n)
+{
+ return tdesc->reg_defs[n];
+}
#ifndef IN_PROCESS_AGENT
{
unsigned char *registers = regcache->registers;
const struct target_desc *tdesc = regcache->tdesc;
- int i;
- for (i = 0; i < tdesc->num_registers; i++)
+ for (int i = 0; i < tdesc->reg_defs.size (); ++i)
{
if (regcache->register_status[i] == REG_VALID)
{
hex2bin (buf, registers, len / 2);
}
-struct reg *
-find_register_by_name (const struct target_desc *tdesc, const char *name)
-{
- int i;
-
- for (i = 0; i < tdesc->num_registers; i++)
- if (strcmp (name, tdesc->reg_defs[i].name) == 0)
- return &tdesc->reg_defs[i];
- fatal ("Unknown register %s requested", name);
- return 0;
-}
-
int
find_regno (const struct target_desc *tdesc, const char *name)
{
- int i;
-
- for (i = 0; i < tdesc->num_registers; i++)
- if (strcmp (name, tdesc->reg_defs[i].name) == 0)
- return i;
- fatal ("Unknown register %s requested", name);
- return -1;
-}
-
-struct reg *
-find_register_by_number (const struct target_desc *tdesc, int n)
-{
- return &tdesc->reg_defs[n];
+ for (int i = 0; i < tdesc->reg_defs.size (); ++i)
+ {
+ if (strcmp (name, find_register_by_number (tdesc, i).name) == 0)
+ return i;
+ }
+ internal_error (__FILE__, __LINE__, "Unknown register %s requested",
+ name);
}
-#endif
-
-#ifndef IN_PROCESS_AGENT
static void
free_register_cache_thread (struct thread_info *thread)
{
- struct regcache *regcache
- = (struct regcache *) inferior_regcache_data (thread);
+ struct regcache *regcache = thread_regcache_data (thread);
if (regcache != NULL)
{
regcache_invalidate_thread (thread);
free_register_cache (regcache);
- set_inferior_regcache_data (thread, NULL);
+ set_thread_regcache_data (thread, NULL);
}
}
-static void
-free_register_cache_thread_one (struct inferior_list_entry *entry)
-{
- struct thread_info *thread = (struct thread_info *) entry;
-
- free_register_cache_thread (thread);
-}
-
void
regcache_release (void)
{
/* Flush and release all pre-existing register caches. */
- for_each_inferior (&all_threads, free_register_cache_thread_one);
+ for_each_thread (free_register_cache_thread);
}
#endif
int
register_size (const struct target_desc *tdesc, int n)
{
- return tdesc->reg_defs[n].size / 8;
+ return find_register_by_number (tdesc, n).size / 8;
}
-static unsigned char *
-register_data (struct regcache *regcache, int n, int fetch)
+/* See common/common-regcache.h. */
+
+int
+regcache_register_size (const struct regcache *regcache, int n)
{
- return regcache->registers + regcache->tdesc->reg_defs[n].offset / 8;
+ return register_size (regcache->tdesc, n);
}
-/* Supply register N, whose contents are stored in BUF, to REGCACHE.
- If BUF is NULL, the register's value is recorded as
- unavailable. */
+static unsigned char *
+register_data (const struct regcache *regcache, int n, int fetch)
+{
+ return (regcache->registers
+ + find_register_by_number (regcache->tdesc, n).offset / 8);
+}
void
supply_register (struct regcache *regcache, int n, const void *buf)
+{
+ return regcache->raw_supply (n, buf);
+}
+
+/* See common/common-regcache.h. */
+
+void
+regcache::raw_supply (int n, const void *buf)
{
if (buf)
{
- memcpy (register_data (regcache, n, 0), buf,
- register_size (regcache->tdesc, n));
+ memcpy (register_data (this, n, 0), buf, register_size (tdesc, n));
#ifndef IN_PROCESS_AGENT
- if (regcache->register_status != NULL)
- regcache->register_status[n] = REG_VALID;
+ if (register_status != NULL)
+ register_status[n] = REG_VALID;
#endif
}
else
{
- memset (register_data (regcache, n, 0), 0,
- register_size (regcache->tdesc, n));
+ memset (register_data (this, n, 0), 0, register_size (tdesc, n));
#ifndef IN_PROCESS_AGENT
- if (regcache->register_status != NULL)
- regcache->register_status[n] = REG_UNAVAILABLE;
+ if (register_status != NULL)
+ register_status[n] = REG_UNAVAILABLE;
#endif
}
}
#endif
}
+#ifndef IN_PROCESS_AGENT
+
+/* Supply register called NAME with value zero to REGCACHE. */
+
+void
+supply_register_by_name_zeroed (struct regcache *regcache,
+ const char *name)
+{
+ supply_register_zeroed (regcache, find_regno (regcache->tdesc, name));
+}
+
+#endif
+
/* Supply the whole register set whose contents are stored in BUF, to
REGCACHE. If BUF is NULL, all the registers' values are recorded
as unavailable. */
{
int i;
- for (i = 0; i < tdesc->num_registers; i++)
+ for (i = 0; i < tdesc->reg_defs.size (); i++)
regcache->register_status[i] = REG_VALID;
}
#endif
{
int i;
- for (i = 0; i < tdesc->num_registers; i++)
+ for (i = 0; i < tdesc->reg_defs.size (); i++)
regcache->register_status[i] = REG_UNAVAILABLE;
}
#endif
void
collect_register (struct regcache *regcache, int n, void *buf)
{
- memcpy (buf, register_data (regcache, n, 1),
- register_size (regcache->tdesc, n));
+ regcache->raw_collect (n, buf);
+}
+
+/* See common/common-regcache.h. */
+
+void
+regcache::raw_collect (int n, void *buf) const
+{
+ memcpy (buf, register_data (this, n, 1), register_size (tdesc, n));
+}
+
+enum register_status
+regcache_raw_read_unsigned (struct regcache *regcache, int regnum,
+ ULONGEST *val)
+{
+ int size;
+
+ gdb_assert (regcache != NULL);
+ gdb_assert (regnum >= 0
+ && regnum < regcache->tdesc->reg_defs.size ());
+
+ size = register_size (regcache->tdesc, regnum);
+
+ if (size > (int) sizeof (ULONGEST))
+ error (_("That operation is not available on integers of more than"
+ "%d bytes."),
+ (int) sizeof (ULONGEST));
+
+ *val = 0;
+ collect_register (regcache, regnum, val);
+
+ return REG_VALID;
}
#ifndef IN_PROCESS_AGENT
+/* See regcache.h. */
+
+ULONGEST
+regcache_raw_get_unsigned_by_name (struct regcache *regcache,
+ const char *name)
+{
+ return regcache_raw_get_unsigned (regcache,
+ find_regno (regcache->tdesc, name));
+}
+
void
collect_register_as_string (struct regcache *regcache, int n, char *buf)
{
}
#endif
+
+/* See common/common-regcache.h. */
+
+enum register_status
+regcache::get_register_status (int regnum) const
+{
+#ifndef IN_PROCESS_AGENT
+ gdb_assert (regnum >= 0 && regnum < tdesc->reg_defs.size ());
+ return (enum register_status) (register_status[regnum]);
+#else
+ return REG_VALID;
+#endif
+}
+
+/* See common/common-regcache.h. */
+
+bool
+regcache::raw_compare (int regnum, const void *buf, int offset) const
+{
+ gdb_assert (buf != NULL);
+
+ const unsigned char *regbuf = register_data (this, regnum, 1);
+ int size = register_size (tdesc, regnum);
+ gdb_assert (size >= offset);
+
+ return (memcmp (buf, regbuf + offset, size - offset) == 0);
+}
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