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thumb high reg bx ops only set flags on cmp

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Matthew Berry 2020-10-29 00:10:20 -07:00
parent fa5746cc0b
commit adeb05911b
1 changed files with 2 additions and 1 deletions
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src/crab/thumb/hi_reg_branch_exchange.cr
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@ -9,8 +9,9 @@ module THUMB
rd += 8 if h1 rd += 8 if h1
rs += 8 if h2 rs += 8 if h2
# In this group only CMP (Op = 01) sets the CPSR condition codes.
case op case op
when 0b00 then set_reg(rd, add(@r[rd], @r[rs], true)) when 0b00 then set_reg(rd, add(@r[rd], @r[rs], false))
when 0b01 then sub(@r[rd], @r[rs], true) when 0b01 then sub(@r[rd], @r[rs], true)
when 0b10 then set_reg(rd, @r[rs]) when 0b10 then set_reg(rd, @r[rs])
when 0b11 when 0b11