xref: /external/libunwind/src/hppa/unwind_i.h

/* libunwind - a platform-independent unwind library
   Copyright (C) 2003 Hewlett-Packard Co
	Contributed by ...

This file is part of libunwind.

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */

#ifndef unwind_i_h
#define unwind_i_h

#include <memory.h>
#include <stdint.h>

#include <libunwind-hppa.h>

#include "internal.h"
#include "tdep.h"

#define HPPA_GET_LOC(l)		((l).val)

#ifdef UNW_LOCAL_ONLY
# define HPPA_LOC(r, t)		((struct hppa_loc) { .val = (r) })
# define HPPA_REG_LOC(c,r)	(HPPA_LOC((unw_word_t)			     \
					 tdep_uc_addr((c)->as_arg, (r)), 0))
# define HPPA_FPREG_FLOC(c,r)	(HPPA_LOC((unw_word_t)			     \
					 tdep_uc_addr((c)->as_arg, (r)), 0))

static inline int
hppa_getfp (struct cursor *c, struct hppa_loc loc, unw_fpreg_t *val)
{
  if (!HPPA_GET_LOC (loc))
    return -1;
  *val = *(unw_fpreg_t *) HPPA_GET_LOC (loc);
  return 0;
}

static inline int
hppa_putfp (struct cursor *c, struct hppa_loc loc, unw_fpreg_t *val)
{
  if (!HPPA_GET_LOC (loc))
    return -1;
  *(unw_fpreg_t *) HPPA_GET_LOC (loc) = *val;
  return 0;
}

static inline int
hppa_get (struct cursor *c, struct hppa_loc loc, unw_word_t *val)
{
  if (!HPPA_GET_LOC (loc))
    return -1;
  *val = *(unw_word_t *) HPPA_GET_LOC (loc);
  return 0;
}

static inline int
hppa_put (struct cursor *c, struct hppa_loc loc, unw_word_t val)
{
  if (!HPPA_GET_LOC (loc))
    return -1;
  *(unw_word_t *) HPPA_GET_LOC (loc) = val;
  return 0;
}

#else /* !UNW_LOCAL_ONLY */
# define HPPA_LOC_TYPE_FP	(1 << 0)
# define HPPA_LOC_TYPE_REG	(1 << 1)
# define HPPA_LOC(r, t)		((struct hppa_loc) { .val = (r), .type = (t) })
# define HPPA_IS_REG_LOC(l)	(((l).type & HPPA_LOC_TYPE_REG) != 0)
# define HPPA_IS_FP_LOC(l)	(((l).type & HPPA_LOC_TYPE_FP) != 0)
# define HPPA_REG_LOC(c,r)	HPPA_LOC((r), HPPA_LOC_TYPE_REG)
# define HPPA_FPREG_LOC(c,r)	HPPA_LOC((r), (HPPA_LOC_TYPE_REG	\
					       | HPPA_LOC_TYPE_FP))

static inline int
hppa_getfp (struct cursor *c, struct hppa_loc loc, unw_fpreg_t *val)
{
  abort ();
}

static inline int
hppa_putfp (struct cursor *c, struct hppa_loc loc, unw_fpreg_t val)
{
  abort ();
}

static inline int
hppa_get (struct cursor *c, struct hppa_loc loc, unw_word_t *val)
{
  if (HPPA_IS_FP_LOC (loc))
    abort ();

  if (HPPA_IS_REG_LOC (loc))
    return (*c->as->acc.access_reg)(c->as, HPPA_GET_LOC (loc), val, 0,
				    c->as_arg);
  else
    return (*c->as->acc.access_mem)(c->as, HPPA_GET_LOC (loc), val, 0,
				    c->as_arg);
}

static inline int
hppa_put (struct cursor *c, struct hppa_loc loc, unw_word_t val)
{
  if (HPPA_IS_FP_LOC (loc))
    abort ();

  if (HPPA_IS_REG_LOC (loc))
    return (*c->as->acc.access_reg)(c->as, HPPA_GET_LOC (loc), &val, 1,
				    c->as_arg);
  else
    return (*c->as->acc.access_mem)(c->as, HPPA_GET_LOC (loc), &val, 1,
				    c->as_arg);
}

#endif /* !UNW_LOCAL_ONLY */

#define hppa_needs_initialization	UNW_ARCH_OBJ(needs_initialization)
#define hppa_init			UNW_ARCH_OBJ(init)
#define hppa_access_reg			UNW_OBJ(access_reg)
#define hppa_access_fpreg		UNW_OBJ(access_fpreg)
#define hppa_local_resume		UNW_OBJ(local_resume)
#define hppa_local_addr_space_init	UNW_OBJ(local_addr_space_init)

extern int hppa_needs_initialization;

extern void hppa_init (void);
extern int hppa_access_reg (struct cursor *c, unw_regnum_t reg,
			    unw_word_t *valp, int write);
extern int hppa_access_fpreg (struct cursor *c, unw_regnum_t reg,
			      unw_fpreg_t *valp, int write);
extern void hppa_local_addr_space_init (void);
extern int hppa_local_resume (unw_addr_space_t as, unw_cursor_t *cursor,
			      void *arg);

#endif /* unwind_i_h */