#define REGCACHE_H
#include "common-regcache.h"
+#include <forward_list>
struct regcache;
struct regset;
regcache_cooked_read_ftype *cooked_read,
void *cooked_read_context);
+enum regcache_dump_what
+{
+ regcache_dump_none, regcache_dump_raw,
+ regcache_dump_cooked, regcache_dump_groups,
+ regcache_dump_remote
+};
+
+/* The register cache for storing raw register values. */
+
+class regcache
+{
+public:
+ regcache (gdbarch *gdbarch, address_space *aspace_)
+ : regcache (gdbarch, aspace_, true)
+ {}
+
+ struct readonly_t {};
+ static constexpr readonly_t readonly {};
+
+ /* Create a readonly regcache from a non-readonly regcache. */
+ regcache (readonly_t, const regcache &src);
+
+ regcache (const regcache &) = delete;
+ void operator= (const regcache &) = delete;
+
+ /* class regcache is only extended in unit test, so only mark it
+ virtual when selftest is enabled. */
+#if GDB_SELF_TEST
+ virtual
+#endif
+ ~regcache ()
+ {
+ xfree (m_registers);
+ xfree (m_register_status);
+ }
+
+ gdbarch *arch () const;
+
+ address_space *aspace () const
+ {
+ return m_aspace;
+ }
+
+ void save (regcache_cooked_read_ftype *cooked_read, void *src);
+
+ enum register_status cooked_read (int regnum, gdb_byte *buf);
+ void cooked_write (int regnum, const gdb_byte *buf);
+
+ enum register_status raw_read (int regnum, gdb_byte *buf);
+
+ /* class regcache is only extended in unit test, so only mark it
+ virtual when selftest is enabled. */
+#if GDB_SELF_TEST
+ virtual
+#endif
+ void raw_write (int regnum, const gdb_byte *buf);
+
+ enum register_status raw_read_signed (int regnum, LONGEST *val);
+
+ void raw_write_signed (int regnum, LONGEST val);
+
+ enum register_status raw_read_unsigned (int regnum, ULONGEST *val);
+
+ void raw_write_unsigned (int regnum, ULONGEST val);
+
+ struct value *cooked_read_value (int regnum);
+
+ enum register_status cooked_read_signed (int regnum, LONGEST *val);
+
+ void cooked_write_signed (int regnum, LONGEST val);
+
+ enum register_status cooked_read_unsigned (int regnum, ULONGEST *val);
+
+ void cooked_write_unsigned (int regnum, ULONGEST val);
+
+ void raw_update (int regnum);
+
+ void raw_collect (int regnum, void *buf) const;
+
+ void raw_collect_integer (int regnum, gdb_byte *addr, int addr_len,
+ bool is_signed) const;
+
+ void raw_supply (int regnum, const void *buf);
+
+ void raw_supply_integer (int regnum, const gdb_byte *addr, int addr_len,
+ bool is_signed);
+
+ void raw_supply_zeroed (int regnum);
+
+ enum register_status get_register_status (int regnum) const;
+
+ void raw_set_cached_value (int regnum, const gdb_byte *buf);
+
+ void invalidate (int regnum);
+
+ enum register_status raw_read_part (int regnum, int offset, int len,
+ gdb_byte *buf);
+
+ void raw_write_part (int regnum, int offset, int len, const gdb_byte *buf);
+
+ enum register_status cooked_read_part (int regnum, int offset, int len,
+ gdb_byte *buf);
+
+ void cooked_write_part (int regnum, int offset, int len,
+ const gdb_byte *buf);
+
+ void supply_regset (const struct regset *regset,
+ int regnum, const void *buf, size_t size);
+
+
+ void collect_regset (const struct regset *regset, int regnum,
+ void *buf, size_t size) const;
+
+ void dump (ui_file *file, enum regcache_dump_what what_to_dump);
+
+ ptid_t ptid () const
+ {
+ return m_ptid;
+ }
+
+ void set_ptid (const ptid_t ptid)
+ {
+ this->m_ptid = ptid;
+ }
+
+/* Dump the contents of a register from the register cache to the target
+ debug. */
+ void debug_print_register (const char *func, int regno);
+
+ static void regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid);
+protected:
+ regcache (gdbarch *gdbarch, address_space *aspace_, bool readonly_p_);
+
+ static std::forward_list<regcache *> current_regcache;
+
+private:
+ gdb_byte *register_buffer (int regnum) const;
+
+ void restore (struct regcache *src);
+
+ void cpy_no_passthrough (struct regcache *src);
+
+ enum register_status xfer_part (int regnum, int offset, int len, void *in,
+ const void *out,
+ decltype (regcache_raw_read) read,
+ decltype (regcache_raw_write) write);
+
+ void transfer_regset (const struct regset *regset,
+ struct regcache *out_regcache,
+ int regnum, const void *in_buf,
+ void *out_buf, size_t size) const;
+
+ struct regcache_descr *m_descr;
+
+ /* The address space of this register cache (for registers where it
+ makes sense, like PC or SP). */
+ struct address_space *m_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 *m_registers;
+ /* Register cache status. */
+ signed char *m_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. */
+ bool m_readonly_p;
+ /* If this is a read-write cache, which thread's registers is
+ it connected to? */
+ ptid_t m_ptid;
+
+ friend struct regcache *
+ get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch,
+ struct address_space *aspace);
+
+ friend void
+ registers_changed_ptid (ptid_t ptid);
+
+ friend void
+ regcache_cpy (struct regcache *dst, struct regcache *src);
+};
+
/* Copy/duplicate the contents of a register cache. By default, the
operation is pass-through. Writes to DST and reads from SRC will
go through to the target. See also regcache_cpy_no_passthrough.
projects / deliverable / binutils-gdb.git / blobdiff