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