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/*
* This file is part of ltrace.
* Copyright (C) 2011,2012 Petr Machata, Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <stdlib.h>
#include <string.h>
#include "fetch.h"
#include "sysdep.h"
#include "value.h"
#include "type.h"
#ifdef ARCH_HAVE_FETCH_ARG
struct fetch_context *arch_fetch_arg_init(enum tof type, struct Process *proc,
struct arg_type_info *ret_info);
struct fetch_context *arch_fetch_arg_clone(struct Process *proc,
struct fetch_context *context);
int arch_fetch_arg_next(struct fetch_context *ctx, enum tof type,
struct Process *proc, struct arg_type_info *info,
struct value *valuep);
int arch_fetch_retval(struct fetch_context *ctx, enum tof type,
struct Process *proc, struct arg_type_info *info,
struct value *valuep);
void arch_fetch_arg_done(struct fetch_context *context);
# ifdef ARCH_HAVE_FETCH_PACK
int arch_fetch_param_pack_start(struct fetch_context *context,
enum param_pack_flavor ppflavor);
void arch_fetch_param_pack_end(struct fetch_context *context);
# endif
#else
/* Fall back to gimme_arg. */
long gimme_arg(enum tof type, struct Process *proc, int arg_num,
struct arg_type_info *info);
struct fetch_context {
int argnum;
};
struct fetch_context *
arch_fetch_arg_init(enum tof type, struct Process *proc,
struct arg_type_info *ret_info)
{
return calloc(sizeof(struct fetch_context), 1);
}
struct fetch_context *
arch_fetch_arg_clone(struct Process *proc, struct fetch_context *context)
{
struct fetch_context *ret = malloc(sizeof(*ret));
if (ret == NULL)
return NULL;
return memcpy(ret, context, sizeof(*ret));
}
int
arch_fetch_arg_next(struct fetch_context *context, enum tof type,
struct Process *proc,
struct arg_type_info *info, struct value *valuep)
{
long l = gimme_arg(type, proc, context->argnum++, info);
value_set_word(valuep, l);
return 0;
}
int
arch_fetch_retval(struct fetch_context *context, enum tof type,
struct Process *proc,
struct arg_type_info *info, struct value *valuep)
{
long l = gimme_arg(type, proc, -1, info);
value_set_word(valuep, l);
return 0;
}
void
arch_fetch_arg_done(struct fetch_context *context)
{
free(context);
}
#endif
#if !defined(ARCH_HAVE_FETCH_ARG) || !defined(ARCH_HAVE_FETCH_PACK)
int
arch_fetch_param_pack_start(struct fetch_context *context,
enum param_pack_flavor ppflavor)
{
return 0;
}
void
arch_fetch_param_pack_end(struct fetch_context *context)
{
}
#endif
struct fetch_context *
fetch_arg_init(enum tof type, struct Process *proc,
struct arg_type_info *ret_info)
{
return arch_fetch_arg_init(type, proc, ret_info);
}
struct fetch_context *
fetch_arg_clone(struct Process *proc, struct fetch_context *context)
{
return arch_fetch_arg_clone(proc, context);
}
int
fetch_arg_next(struct fetch_context *context, enum tof type,
struct Process *proc,
struct arg_type_info *info, struct value *valuep)
{
return arch_fetch_arg_next(context, type, proc, info, valuep);
}
int
fetch_retval(struct fetch_context *context, enum tof type,
struct Process *proc,
struct arg_type_info *info, struct value *valuep)
{
return arch_fetch_retval(context, type, proc, info, valuep);
}
void
fetch_arg_done(struct fetch_context *context)
{
return arch_fetch_arg_done(context);
}
int
fetch_param_pack_start(struct fetch_context *context,
enum param_pack_flavor ppflavor)
{
return arch_fetch_param_pack_start(context, ppflavor);
}
void
fetch_param_pack_end(struct fetch_context *context)
{
return arch_fetch_param_pack_end(context);
}
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