118 lines
2.3 KiB
Plaintext
118 lines
2.3 KiB
Plaintext
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## Copyright (C) 2016 Jeremiah Orians
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## This file is part of stage0.
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##
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## stage0 is free software: you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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##
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## stage0 is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU 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 stage0. If not, see <http://www.gnu.org/licenses/>.
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# M2-Planet standards
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DEFINE NULL 00000000
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# Registers
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DEFINE R0 0
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DEFINE R1 1
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DEFINE R2 2
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DEFINE R3 3
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DEFINE R4 4
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DEFINE R5 5
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DEFINE R6 6
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DEFINE R7 7
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DEFINE R8 8
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DEFINE R9 9
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DEFINE R10 A
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DEFINE R11 B
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DEFINE R12 C
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DEFINE BP C
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DEFINE R13 D
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DEFINE SP D
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DEFINE R14 E
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DEFINE LR E
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DEFINE R15 F
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DEFINE PC F
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# Register masks for push/pop16
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DEFINE {R0} 0100
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DEFINE {R1} 0200
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DEFINE {R2} 0400
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DEFINE {R3} 0800
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DEFINE {R4} 1000
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DEFINE {R11} 0008
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DEFINE {BP} 0010
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DEFINE {LR} 0040
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# Bitshift constants
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DEFINE NO_SHIFT 0
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DEFINE LEFT 1
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DEFINE RIGHT 3
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DEFINE ARITH_RIGHT 5
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# LOAD/STORE
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DEFINE MEMORY E5
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DEFINE STORE32 08
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DEFINE STORE8 0C
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DEFINE LOAD32 09
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DEFINE LOAD8 0D
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DEFINE LOADI8_ALWAYS 0A0E3
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DEFINE LOADI8_G 0A0C3
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DEFINE LOADI8_GE 0A0A3
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DEFINE LOADI8_EQUAL 0A003
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DEFINE LOADI8_NE 0A013
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DEFINE LOADI8_LE 0A0D3
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DEFINE LOADI8_L 0A0B3
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DEFINE LOADI8_HI 0A083
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DEFINE LOADI8_HS 0A023
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DEFINE LOADI8_LS 0A093
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DEFINE LOADI8_LO 0A033
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# JUMP/BRANCH
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DEFINE JUMP_ALWAYS EA
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DEFINE JUMP_EQUAL 0A
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DEFINE JUMP_NE 1A
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DEFINE CALL_ALWAYS EB
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DEFINE CALL_REG_ALWAYS FF2FE1
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DEFINE RETURN FF2FE1
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# Data movement
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DEFINE MOVE_ALWAYS A0E1
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DEFINE MVN_ALWAYS 0E0E1
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DEFINE MVN_LT 0E0B1
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DEFINE MVNI8_EQUAL 0E003
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DEFINE PUSH_ALWAYS 2DE9
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DEFINE POP_ALWAYS BDE8
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# Arithmetic/logic
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DEFINE AUX_ALWAYS E1
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DEFINE IMM_ALWAYS E3
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DEFINE ARITH_ALWAYS E2
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DEFINE ARITH_GE A2
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DEFINE ARITH_LT B2
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DEFINE ARITH_NE 12
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DEFINE ARITH2_ALWAYS E0
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DEFINE ARITH2_GE A0
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DEFINE ADC 0A
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DEFINE ADCS 0B
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DEFINE ADD 08
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DEFINE ADDS 09
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DEFINE AND 00
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DEFINE CMP 005
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DEFINE CMPI8 005
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DEFINE MUL 0
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DEFINE MULS 1
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DEFINE OR 08
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DEFINE SHIFT A0
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DEFINE SUB 04
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DEFINE RSUB 06
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DEFINE XOR 02
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# SYSCALL
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DEFINE SYSCALL_ALWAYS 000000EF
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