Mercurial > repos > blastem
diff runtime.S @ 547:3090d016c9e9
Generate get_sr, set_sr and set_ccr at runtime so they can respect the flag_regs setting
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Tue, 18 Feb 2014 20:32:10 -0800 |
| parents | 67cf0ce57d8d |
| children | 6b248602ab84 5a6ff0d76032 |
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--- a/runtime.S Mon Feb 17 19:58:37 2014 -0800 +++ b/runtime.S Tue Feb 18 20:32:10 2014 -0800 @@ -70,56 +70,5 @@ mov %rdi, %rax ret - .global get_sr -get_sr: - mov 5(%rsi), %cl - shl $8, %cx - mov (%rsi), %cl - shl $1, %cl - or %bl, %cl - shl $1, %cl - or %dl, %cl - shl $1, %cl - or %bh, %cl - shl $1, %cl - or %dh, %cl - ret - .global set_sr -set_sr: - mov %cl, %dh - and $1, %dh - shr $1, %cl - mov %cl, %bh - and $1, %bh - shr $1, %cl - mov %cl, %dl - and $1, %dl - shr $1, %cl - mov %cl, %bl - and $1, %bl - shr $1, %cl - and $1, %cl - mov %cl, (%rsi) - shr $8, %cx - mov %cl, 5(%rsi) - ret - .global set_ccr -set_ccr: - mov %cl, %dh - and $1, %dh - shr $1, %cl - mov %cl, %bh - and $1, %bh - shr $1, %cl - mov %cl, %dl - and $1, %dl - shr $1, %cl - mov %cl, %bl - and $1, %bl - shr $1, %cl - and $1, %cl - mov %cl, (%rsi) - ret -