Asm
/* $Id$ */
/* Copyright (c) 2014-2018 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Devel Asm */
/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stddef.h>
#include <System.h>
#include "Asm.h"
/* template */
/* private */
/* variables */
static AsmArchDefinition const _template_definition =
{
"flat", ASM_ARCH_ENDIAN_BOTH, 8, 8, 8
};
#define REG(name, size, id, flags, description) \
{ "" # name, size, id, flags, description },
static AsmArchRegister const _template_registers[] =
{
#include "null.reg"
};
#undef REG
static AsmArchPrefix const _template_prefixes[] =
{
#if 0
# include "template.pre"
#endif
#include "null.pre"
};
static AsmArchInstruction const _template_instructions[] =
{
#if 0
# include "template.ins"
#endif
#include "common.ins"
#include "null.ins"
};
struct _AsmArchPlugin
{
AsmArchPluginHelper * helper;
};
/* prototypes */
/* plug-in */
static AsmArchPlugin * _template_init(AsmArchPluginHelper * helper);
static void _template_destroy(AsmArchPlugin * plugin);
static int _template_decode(AsmArchPlugin * plugin,
AsmArchInstructionCall * call);
static int _template_encode(AsmArchPlugin * plugin,
AsmArchPrefix const * prefix,
AsmArchInstruction const * instruction,
AsmArchInstructionCall const * call);
/* protected */
/* variables */
AsmArchPluginDefinition arch_plugin =
{
"template",
"Template",
LICENSE_GNU_LGPL3_FLAGS,
&_template_definition,
_template_registers,
_template_prefixes,
_template_instructions,
_template_init,
_template_destroy,
_template_encode,
_template_decode
};
/* functions */
/* plug-in */
/* template_init */
static AsmArchPlugin * _template_init(AsmArchPluginHelper * helper)
{
AsmArchPlugin * plugin;
if((plugin = object_new(sizeof(*plugin))) == NULL)
return NULL;
plugin->helper = helper;
return plugin;
}
/* template_destroy */
static void _template_destroy(AsmArchPlugin * plugin)
{
object_delete(plugin);
}
/* template_decode */
static int _template_decode(AsmArchPlugin * plugin,
AsmArchInstructionCall * call)
{
AsmArchPluginHelper * helper = plugin->helper;
uint8_t u8;
AsmArchInstruction const * ai;
if(helper->read(helper->arch, &u8, sizeof(u8)) != sizeof(u8))
return -1;
if((ai = helper->get_instruction_by_opcode(helper->arch, 8, u8))
== NULL)
return -1;
call->name = ai->name;
call->operands[0].definition = ai->op1;
call->operands[0].value.immediate.value = u8;
call->operands_cnt = 1;
return 0;
}
/* template_encode */
static int _template_encode(AsmArchPlugin * plugin,
AsmArchPrefix const * prefix,
AsmArchInstruction const * instruction,
AsmArchInstructionCall const * call)
{
AsmArchPluginHelper * helper = plugin->helper;
uint8_t opcode;
if(prefix != NULL)
return -error_set_code(1, "%s: %s",
helper->get_filename(helper->arch),
"Prefixes not supported for this architecture");
opcode = instruction->opcode;
if(helper->write(helper->arch, &opcode, sizeof(opcode))
!= sizeof(opcode))
return -1;
return 0;
}