+#include "alpha-tdep.h"
+#include "gdbarch.h"
+
+#include "nat/gdb_ptrace.h"
+#include <alpha/ptrace.h>
+
+#include <sys/procfs.h>
+#include "gregset.h"
+
+/* The address of UNIQUE for ptrace. */
+#define ALPHA_UNIQUE_PTRACE_ADDR 65
+
+class alpha_linux_nat_target final : public linux_nat_trad_target
+{
+protected:
+ /* Override linux_nat_trad_target methods. */
+ CORE_ADDR register_u_offset (struct gdbarch *gdbarch,
+ int regno, int store_p) override;
+};
+
+static alpha_linux_nat_target the_alpha_linux_nat_target;
+
+/* See the comment in m68k-tdep.c regarding the utility of these
+ functions. */
+
+void
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
+{
+ const long *regp = (const long *)gregsetp;
+
+ /* PC is in slot 32, UNIQUE is in slot 33. */
+ alpha_supply_int_regs (regcache, -1, regp, regp + 31, regp + 32);
+}
+
+void
+fill_gregset (const struct regcache *regcache,
+ gdb_gregset_t *gregsetp, int regno)
+{
+ long *regp = (long *)gregsetp;
+
+ /* PC is in slot 32, UNIQUE is in slot 33. */
+ alpha_fill_int_regs (regcache, regno, regp, regp + 31, regp + 32);
+}
+
+/* Now we do the same thing for floating-point registers.
+ Again, see the comments in m68k-tdep.c. */
+
+void
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
+{
+ const long *regp = (const long *)fpregsetp;
+
+ /* FPCR is in slot 32. */
+ alpha_supply_fp_regs (regcache, -1, regp, regp + 31);
+}
+
+void
+fill_fpregset (const struct regcache *regcache,
+ gdb_fpregset_t *fpregsetp, int regno)
+{
+ long *regp = (long *)fpregsetp;
+
+ /* FPCR is in slot 32. */
+ alpha_fill_fp_regs (regcache, regno, regp, regp + 31);
+}
+
+CORE_ADDR
+alpha_linux_nat_target::register_u_offset (struct gdbarch *gdbarch,
+ int regno, int store_p)
+{
+ if (regno == gdbarch_pc_regnum (gdbarch))
+ return PC;
+ if (regno == ALPHA_UNIQUE_REGNUM)
+ return ALPHA_UNIQUE_PTRACE_ADDR;
+ if (regno < gdbarch_fp0_regnum (gdbarch))
+ return GPR_BASE + regno;
+ else
+ return FPR_BASE + regno - gdbarch_fp0_regnum (gdbarch);
+}