205 lines
5.4 KiB
C
205 lines
5.4 KiB
C
/***********************************************************************
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* podefs.h
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* Logical P-code operation code definitions
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*
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* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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***********************************************************************/
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#ifndef __PODEFS_H
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#define __PODEFS_H
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/* These definitions represent logical operations as needed by the
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* the compiler. The specific INSN generation layer must interpret
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* these requests as is appropriate to the supported INSNS.
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*/
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enum pcode_e
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{
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/**-------------------------------------------------------------------
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* OPCODES WITH NO ARGUMENTS
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**-------------------------------------------------------------------**/
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/* Program control (No stack arguments) */
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opNOP = 0,
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/* Arithmetic & logical & and integer conversions (One stack argument) */
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opNEG, opABS, opINC, opDEC, opNOT,
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/* Arithmetic & logical (Two stack arguments) */
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opADD, opSUB, opMUL, opDIV, opMOD, opSLL, opSRL, opSRA, opOR, opAND,
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/* Comparisons (One stack argument) */
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opEQUZ, opNEQZ, opLTZ, opGTEZ, opGTZ, opLTEZ,
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/* Comparisons (Two stack arguments) */
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opEQU, opNEQ, opLT, opGTE, opGT, opLTE,
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opBIT,
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/* Load Immediate */
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opLDI, opLDIB, opLDIM,
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/* Store Immediate */
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opSTI, opSTIB, opSTIM,
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/* Data stack */
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opDUP, opPUSHS, opPOPS,
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/* Program control (No stack arguments)
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* Behavior:
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* Pop return address
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* Pop saved base register (BR)
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* Discard saved base address
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* Set program counter (PC) to return address
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*/
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opRET,
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/* System Functions (No stack arguments) */
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opEND,
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/**-------------------------------------------------------------------
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** OPCODES WITH ONE ARGUMENT
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**-------------------------------------------------------------------**/
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/* Floating point operations: arg = FP op-code */
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opFLOAT,
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/* Program control: arg = unsigned label (One stack argument) */
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opJEQUZ, opJNEQZ,
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/* Program control: arg = unsigned label (no stack arguments) */
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opJMP,
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/* Program control: arg = unsigned label (One stack argument) */
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opJEQU, opJNEQ, opJLT, opJGTE, opJGT, opJLTE,
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/* Load: arg = unsigned base offset */
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opLD, opLDH, opLDB, opLDM,
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/* Store: arg = unsigned base offset */
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opST, opSTB, opSTM,
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/* Load Indexed: arg = unsigned base offset */
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opLDX, opLDXB, opLDXM,
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/* Store Indexed: arg16 = unsigned base offset */
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opSTX, opSTXB, opSTXM,
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/* Load address relative to stack base: arg = unsigned offset */
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opLA,
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/* Load absolute stack address: arg = RODATA offset (No stack arguments) */
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opLAC,
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/* Data stack: arg = 16 bit signed data (no stack arguments) */
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opPUSH, opINDS,
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/* Load address relative to stack base: arg1 = unsigned offset, TOS=index */
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opLAX,
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/* System functions: arg = 16-bit library call identifier */
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opLIB,
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/* Program control: arg = unsigned label (no stack arguments) */
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opLABEL,
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/**-------------------------------------------------------------------
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** OPCODES WITH TWO ARGUMENTS
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**-------------------------------------------------------------------**/
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/* Program Control: arg1 = level; arg2 = unsigned label */
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opPCAL,
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/* Load: arg1 = level; arg2 = signed frame offset */
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opLDS, opLDSH, opLDSB, opLDSM,
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/* Store: arg1 = level; arg2 = signed frame offset */
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opSTS, opSTSB, opSTSM,
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/* Load Indexed: arg1 = level; arg2 = signed frame offset */
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opLDSX, opLDSXB, opLDSXM,
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/* Store Indexed: arg1 = level; arg2 = signed frame offset */
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opSTSX, opSTSXB, opSTSXM,
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/* FOR LAS/LASX arg1 = level; arg2 = signed frame offset
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* (no stack arguments)
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*/
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opLAS, opLASX,
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/* System calls:
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* For SYSIO: arg1 = file number; arg2 = sub-function code
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*/
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opSYSIO,
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/* Pseudo-operations:
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* For LINE: arg1 = file number; arg2 = line number
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*/
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opLINE,
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NUM_OPCODES
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};
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#endif /* __PODEFS_H */
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