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Fixed Beq and Bne instructions' immediate being decoded wrong.

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This commit is contained in:
Filipe Rodrigues
2020-10-28 17:35:29 +00:00
parent da782b5a52
commit 343c9eca1c
1 changed files with 4 additions and 5 deletions
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9
dcb/src/game/exe/instruction/simple.rs
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@@ -347,11 +347,10 @@ impl SimpleInstruction {
"000010_iiiii_iiiii_iiiii_iiiii_iiiiii" => J { target: (pos & 0xf000_0000) + i * 4 },
"000011_iiiii_iiiii_iiiii_iiiii_iiiiii" => Jal { target: (pos & 0xf000_0000) + i * 4 },
"000100_sssss_ttttt_iiiii_iiiii_iiiiii" => Beq { rs: reg(s)?, rt: reg(t)?, target: pos + (i + 1) * 4 },
"000101_sssss_ttttt_iiiii_iiiii_iiiiii" => Bne { rs: reg(s)?, rt: reg(t)?, target: pos + (i + 1) * 4 },
"000110_sssss_?????_iiiii_iiiii_iiiiii" => Blez { rs: reg(s)?, target: pos + (i.truncated::<u16>().as_signed().sign_extended::<i32>() + 1) * 4 },
"000111_sssss_?????_iiiii_iiiii_iiiiii" => Bgtz { rs: reg(s)?, target: pos + (i.truncated::<u16>().as_signed().sign_extended::<i32>() + 1) * 4 },
"000100_sssss_ttttt_iiiii_iiiii_iiiiii" => Beq { rs: reg(s)?, rt: reg(t)?, target: pos + (i.truncated::<u16>().as_signed().sign_extended::<i32>() + 1) * 4 },
"000101_sssss_ttttt_iiiii_iiiii_iiiiii" => Bne { rs: reg(s)?, rt: reg(t)?, target: pos + (i.truncated::<u16>().as_signed().sign_extended::<i32>() + 1) * 4 },
"000110_sssss_?????_iiiii_iiiii_iiiiii" => Blez { rs: reg(s)? , target: pos + (i.truncated::<u16>().as_signed().sign_extended::<i32>() + 1) * 4 },
"000111_sssss_?????_iiiii_iiiii_iiiiii" => Bgtz { rs: reg(s)? , target: pos + (i.truncated::<u16>().as_signed().sign_extended::<i32>() + 1) * 4 },
"001000_sssss_ttttt_iiiii_iiiii_iiiiii" => Addi { rt: reg(t)?, rs: reg(s)?, imm: i.truncated::<u16>().as_signed() },
"001001_sssss_ttttt_iiiii_iiiii_iiiiii" => Addiu { rt: reg(t)?, rs: reg(s)?, imm: i.truncated::<u16>().as_signed() },