/***********************************************************************
* podefs.h
* Logical P-code operation code definitions
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
***********************************************************************/
#ifndef __PODEFS_H
#define __PODEFS_H
/* These definitions represent logical operations as needed by the
* the compiler. The specific INSN generation layer must interpret
* these requests as is appropriate to the supported INSNS.
*/
enum pcode_e
{
/**-------------------------------------------------------------------
* OPCODES WITH NO ARGUMENTS
**-------------------------------------------------------------------**/
/* Program control (No stack arguments) */
opNOP = 0,
/* Arithmetic & logical & and integer conversions (One stack argument) */
opNEG, opABS, opINC, opDEC, opNOT,
/* Arithmetic & logical (Two stack arguments) */
opADD, opSUB, opMUL, opDIV, opMOD, opSLL, opSRL, opSRA, opOR, opAND,
/* Comparisons (One stack argument) */
opEQUZ, opNEQZ, opLTZ, opGTEZ, opGTZ, opLTEZ,
/* Comparisons (Two stack arguments) */
opEQU, opNEQ, opLT, opGTE, opGT, opLTE,
opBIT,
/* Load Immediate */
opLDI, opLDIB, opLDIM,
/* Store Immediate */
opSTI, opSTIB, opSTIM,
/* Data stack */
opDUP, opPUSHS, opPOPS,
/* Program control (No stack arguments)
* Behavior:
* Pop return address
* Pop saved base register (BR)
* Discard saved base address
* Set program counter (PC) to return address
*/
opRET,
/* System Functions (No stack arguments) */
opEND,
/**-------------------------------------------------------------------
** OPCODES WITH ONE ARGUMENT
**-------------------------------------------------------------------**/
/* Floating point operations: arg = FP op-code */
opFLOAT,
/* Program control: arg = unsigned label (One stack argument) */
opJEQUZ, opJNEQZ,
/* Program control: arg = unsigned label (no stack arguments) */
opJMP,
/* Program control: arg = unsigned label (One stack argument) */
opJEQU, opJNEQ, opJLT, opJGTE, opJGT, opJLTE,
/* Load: arg = unsigned base offset */
opLD, opLDH, opLDB, opLDM,
/* Store: arg = unsigned base offset */
opST, opSTB, opSTM,
/* Load Indexed: arg = unsigned base offset */
opLDX, opLDXB, opLDXM,
/* Store Indexed: arg16 = unsigned base offset */
opSTX, opSTXB, opSTXM,
/* Load address relative to stack base: arg = unsigned offset */
opLA,
/* Load absolute stack address: arg = RODATA offset (No stack arguments) */
opLAC,
/* Data stack: arg = 16 bit signed data (no stack arguments) */
opPUSH, opINDS,
/* Load address relative to stack base: arg1 = unsigned offset, TOS=index */
opLAX,
/* System functions: arg = 16-bit library call identifier */
opLIB,
/* Program control: arg = unsigned label (no stack arguments) */
opLABEL,
/**-------------------------------------------------------------------
** OPCODES WITH TWO ARGUMENTS
**-------------------------------------------------------------------**/
/* Program Control: arg1 = level; arg2 = unsigned label */
opPCAL,
/* Load: arg1 = level; arg2 = signed frame offset */
opLDS, opLDSH, opLDSB, opLDSM,
/* Store: arg1 = level; arg2 = signed frame offset */
opSTS, opSTSB, opSTSM,
/* Load Indexed: arg1 = level; arg2 = signed frame offset */
opLDSX, opLDSXB, opLDSXM,
/* Store Indexed: arg1 = level; arg2 = signed frame offset */
opSTSX, opSTSXB, opSTSXM,
/* FOR LAS/LASX arg1 = level; arg2 = signed frame offset
* (no stack arguments)
*/
opLAS, opLASX,
/* System calls:
* For SYSIO: arg1 = file number; arg2 = sub-function code
*/
opSYSIO,
/* Psuedo-operations:
* For LINE: arg1 = file number; arg2 = line number
*/
opLINE,
NUM_OPCODES
};
#endif /* __PODEFS_H */
