diff options
Diffstat (limited to 'fetch.c')
| -rw-r--r-- | fetch.c | 166 |
1 files changed, 166 insertions, 0 deletions
@@ -0,0 +1,166 @@ +/* + * 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); +} |