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GT-3534: Removed AF flag setting in add/sub flags when not being set

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ghidorahrex 2020-02-11 11:41:27 -05:00
parent 6de961364f
commit 222b42a76b
1 changed files with 2 additions and 4 deletions
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6
Ghidra/Processors/x86/data/languages/ia.sinc
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@ -1229,12 +1229,11 @@ macro addCarryFlags ( op1, op2 ) {
local CFcopy = zext(CF); local CFcopy = zext(CF);
CF = carry( op1, op2 ); CF = carry( op1, op2 );
OF = scarry( op1, op2 ); OF = scarry( op1, op2 );
local AFmask = -1 >> 4;
AF = (((op1 & AFmask) + (op2 & AFmask) + CFcopy) & (AFmask + 1)) != 0;
local result = op1 + op2; local result = op1 + op2;
CF = CF || carry( result, CFcopy ); CF = CF || carry( result, CFcopy );
OF = OF ^^ scarry( result, CFcopy ); OF = OF ^^ scarry( result, CFcopy );
op1 = result + CFcopy; op1 = result + CFcopy;
# AF not implemented
} }
@ -1242,12 +1241,11 @@ macro subCarryFlags ( op1, op2 ) {
local CFcopy = zext(CF); local CFcopy = zext(CF);
CF = op1 < op2; CF = op1 < op2;
OF = sborrow( op1, op2 ); OF = sborrow( op1, op2 );
local AFmask = -1 >> 4;
AF = (((op1 & AFmask) - (op2 & AFmask) - CFcopy) & (AFmask + 1)) != 0;
local result = op1 - op2; local result = op1 - op2;
CF = CF || (result < CFcopy); CF = CF || (result < CFcopy);
OF = OF ^^ sborrow( result, CFcopy ); OF = OF ^^ sborrow( result, CFcopy );
op1 = result - CFcopy; op1 = result - CFcopy;
# AF not implemented
} }
macro resultflags(result) { macro resultflags(result) {