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thumb alu fix neg handling

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Matthew Berry 2020-12-01 00:10:23 -08:00
parent a79afb3817
commit 70913a4ee8
1 changed files with 1 additions and 1 deletions
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src/crab/thumb/alu_operations.cr
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@ -22,7 +22,7 @@ module THUMB
res = set_reg(rd, ror(@r[rd], @r[rs], false, pointerof(barrel_shifter_carry_out)))
@cpsr.carry = barrel_shifter_carry_out
when 0b1000 then res = @r[rd] & @r[rs]
when 0b1001 then res = set_reg(rd, (-@r[rs].to_i32!).to_u32!)
when 0b1001 then res = set_reg(rd, ~(@r[rs] &- 1))
when 0b1010 then res = sub(@r[rd], @r[rs], set_conditions: true)
when 0b1011 then res = add(@r[rd], @r[rs], set_conditions: true)
when 0b1100 then res = set_reg(rd, @r[rd] | @r[rs])