mirror of
https://github.com/Ed94/pikuma_ps1.git
synced 2026-06-02 02:51:14 -07:00
182 lines
2.7 KiB
ArmAsm
182 lines
2.7 KiB
ArmAsm
# Symbol Alias Table
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# Instructions
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# Load
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.macro load_addr p1, p2
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la \p1, \p2
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.endm
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.macro load_imm p1, p2
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li \p1, \p2
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.endm
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.macro load_uimm p1, p2
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lui \p1, \p2
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.endm
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.macro load_half p1, p2
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lh \p1, \p2
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.endm
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.macro load_word p1, p2
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lw \p1, \p2
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.endm
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# Store
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.macro store_byte p1, p2
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sb \p1, \p2
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.endm
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.macro store_half p1, p2
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sh \p1, \p2
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.endm
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.macro store_word p1, p2
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sw \p1, \p2
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.endm
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# Shift
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.macro shift_ll p1, p2, p3
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sll \p1, \p2, \p3
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.endm
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.macro shift_rl p1, p2, p3
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srl \p1, \p2, \p3
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.endm
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.macro shift_ra p1, p2, p3
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sra \p1, \p2, \p3
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.endm
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# Addition
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.macro add_s p1, p2, p3
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add \p1, \p2, \p3
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.endm
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.macro add_u p1, p2, p3
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addu \p1, \p2, \p3
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.endm
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.macro add_si p1, p2, p3
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addi \p1, \p2, \p3
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.endm
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.macro add_ui p1, p2, p3
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addiu \p1, \p2, \p3
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.endm
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# Subtraction
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.macro sub_s p1, p2, p3
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sub \p1, \p2, \p3
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.endm
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.macro sub_u p1, p2, p3
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subu \p1, \p2, \p3
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.endm
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# Multiplication
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.macro mult_s p1, p2
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mult \p1, \p2
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.endm
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.macro mult_u p1, p2
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multu \p1, \p2
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.endm
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.macro mult_si p1, p2
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multi \p1, \p2
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.endm
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.macro mult_ui p1, p2
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multui \p1, \p2
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.endm
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# Division
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.macro div_s p1, p2
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div \p1, \p2
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.endm
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.macro div_u p1, p2
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divu \p1, \p2
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.endm
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.macro mov_from_high p1
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mfhi \p1
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.endm
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.macro mov_from_low p1
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mflo \p1
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.endm
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# Branch
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.macro branch_ne_zero p1, p2
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bnez \p1, \p2
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.endm
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.macro branch_equal p1, p2, p3
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beq \p1, \p2, \p3
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.endm
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.macro branch_gt_equal p1, p2, p3
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bge \p1, \p2, \p3
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.endm
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.macro branch_gt p1, p2, p3
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bgt \p1, \p2, \p3
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.endm
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.macro branch_lt p1, p2, p3
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blt \p1, \p2, \p3
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.endm
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# Jump
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.macro jump p1
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j \p1
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.endm
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.macro jump_nlink p1
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jal \p1
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.endm
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.macro jump_reg p1
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jr \p1
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.endm
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.macro jump_nreg p1
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jalr \p1
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.endm
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# Registers
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# Stack
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.equiv rstack_ptr, $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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.set rtmp_0, $t0
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.set rtmp_1, $t1
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.set rtmp_2, $t2
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.set rtmp_3, $t3
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.set rtmp_4, $t4
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# Static Variables
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.set rstatic_0, $s0
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.set rstatic_1, $s1
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.set rstatic_2, $s2
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.set rstatic_3, $s3
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.set rstatic_4, $s4
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.set rstatic_5, $s5
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.set rstatic_6, $s6
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.set rstatic_7, $s7
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# Subroutine arguments
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.set rarg_0, $a0
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.set rarg_1, $a1
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.set rarg_2, $a2
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.set rarg_3, $a3
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# Subroutine return values
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.set rret_0, $v0
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.set rret_1, $v1
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# Subroutine return address when doing a sub
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.set rret_addr, $ra
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.macro align8 size
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(\size + 7) & ~7
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.endm
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.macro def_cf_sp_size size
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.set cf_ssize, (\size + 7) & ~7
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.endm
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.macro stack_alloc amount
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add_ui $sp, $sp, - \amount
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.endm
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.macro stack_release amount
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add_ui $sp, $sp, \amount
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.endm
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# Data Widths
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.set byte, 1
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.set word, 4
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.equ U1, 1
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.equ U2, 2
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.equ U4, 4
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.equ S1, 1
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.equ S2, 2
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.equ S4, 4
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.equ B1, 1
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.equ B2, 2
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.equ B3, 3
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.equ false, 0
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.equ true, 1
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.equ true_overflow, 3
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.macro struct_field name type_width, prev_offset
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\name \prev_offset
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.endm
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