/* Low level Alpha GNU/Linux interface, for GDB when running native.
- Copyright (C) 2005, 2006
- Free Software Foundation, Inc.
+ Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "target.h"
+#include "regcache.h"
#include "linux-nat.h"
+#include "alpha-tdep.h"
+
+#include <sys/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
+
+
+/*
+ * 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);
+}
+
+
+static CORE_ADDR
+alpha_linux_register_u_offset (struct gdbarch *gdbarch, int regno, int store_p)
+{
+ if (regno == gdbarch_pc_regnum (current_gdbarch))
+ return PC;
+ if (regno == ALPHA_UNIQUE_REGNUM)
+ return ALPHA_UNIQUE_PTRACE_ADDR;
+ if (regno < gdbarch_fp0_regnum (current_gdbarch))
+ return GPR_BASE + regno;
+ else
+ return FPR_BASE + regno - gdbarch_fp0_regnum (current_gdbarch);
+}
+
void _initialialize_alpha_linux_nat (void);
void
_initialize_alpha_linux_nat (void)
{
- linux_nat_add_target (linux_target ());
+ linux_nat_add_target (linux_trad_target (alpha_linux_register_u_offset));
}