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82 lines
2.0 KiB
ArmAsm
82 lines
2.0 KiB
ArmAsm
; Symbol Alias Table
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; Instructions
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; Load
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load_addr equ la ;
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load_imm equ li ; dst_reg, immeidate value (signed)
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load_uimm equ lui ; dst_reg, immediate value (unsigned)
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load_word equ lw ; dst_reg, offset(src_reg0) (offset is immediate value)
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; Store
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store_word equ sw ; src_reg, dst_address
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; Shift
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shift_ll equ sll ;
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shift_rl equ srl ;
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shift_ra equ sra ;
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; Addition
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add_s equ add ; dst_reg, reg_a, reg_b (signed)
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add_u equ add ; dst_reg, reg_a, reg_b (unsigned)
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add_si equ addi ; dst_reg, src_reg, immediate value (signed)
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add_ui equ addiu ; dst_reg, src_reg, immediate value (unsigned)
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; Subtraction
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sub_s equ sub ;
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sub_u equ subu ;
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; Multiplication
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; Division
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div_s equ div ;
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div_u equ divu ;
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mov_from_high equ mfhi ;
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mov_from_low equ mflo ;
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; Branch
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branch_ne_zero equ bnez ;
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branch_equal equ beq ; reg, value(reg, immediate), dst_label
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branch_gt_equal equ bge ; reg, value(reg, immediate), dst_label
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branch_gt equ bgt ; reg, value(reg, immediate), dst_label
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branch_lt equ blt ; reg, value(reg, immediate), dst_label
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; Jump
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jump equ j ; address: immediate
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jump_nlink equ jal ; subroutine: immeidate
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jump_reg equ jr ; address: register
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jump_nreg equ jrl ; subroutine: register
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; Registers
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; Stack
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rstack_ptr equ $sp ; I have this but won't really use the alias..
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; Temporaries, may be changed by subroutines
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rtmp_0 equ $t0
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rtmp_1 equ $t1
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rtmp_2 equ $t2
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rtmp_3 equ $t3
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rtmp_4 equ $t4
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; Static Variables
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rstatic_0 equ $s0
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rstatic_1 equ $s1
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rstatic_2 equ $s2
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rstatic_3 equ $s3
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rstatic_4 equ $s4
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rstatic_5 equ $s5
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rstatic_6 equ $s6
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rstatic_7 equ $s7
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; Subroutine arguments
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rarg_0 equ $a0
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rarg_1 equ $a1
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rarg_2 equ $a2
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rarg_3 equ $a3
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; Subroutine return values
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rret_0 equ $v0
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rret_1 equ $v1
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; Subroutine return address when doing a sub
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rret_addr equ $ra
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; Data Widths
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byte equ 1
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word equ 4
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.macro stack_alloc, amount
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add_ui $sp, - amount
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.endmacro
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.macro stack_release, amount
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add_ui $sp, amount
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.endmacro
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