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GP-1378 make add with carry/subtract with borrow macros

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decompiler-friendly
This commit is contained in:
James 2021-10-09 18:42:44 +00:00
parent 0aff58812f
commit 02d827b859
3 changed files with 49 additions and 45 deletions
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26
Ghidra/Processors/Sparc/data/languages/SparcV9.sinc
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@ -408,34 +408,24 @@ macro addCarryFlags ( op1, op2 ) {
local op1_low_32:4 = op1:4;
local op2_low_32:4 = op2:4;
local CFcopy:$(SIZE) = zext(i_cf);
local CFcopy_32:4 = zext(i_cf);
i_cf = carry( op1_low_32, op2_low_32);
x_cf = carry(op1,op2);
i_vf = scarry( op1_low_32, op2_low_32);
x_vf = scarry(op1, op2);
local result:$(SIZE) = op1 + op2;
local result_low_32:4 = op1_low_32 + op2_low_32;
i_cf = i_cf || carry( result_low_32, CFcopy_32 );
x_cf = x_cf || carry(result,CFcopy);
i_vf = i_vf ^^ scarry( result_low_32, CFcopy_32 );
x_vf = x_vf ^^ scarry(result,CFcopy);
i_cf = carry( op1_low_32, op2_low_32) || carry( result_low_32, CFcopy:4 );
x_cf = carry(op1,op2) || carry(result,CFcopy);
i_vf = scarry( op1_low_32, op2_low_32) ^^ scarry( result_low_32, CFcopy:4 );
x_vf = scarry(op1, op2) ^^ scarry(result,CFcopy);
}
macro subCarryFlags ( op1, op2 ) {
local op1_low_32:4 = op1:4;
local op2_low_32:4 = op2:4;
local CFcopy:$(SIZE) = zext(i_cf);
local CFCopy_32:4 = zext(i_cf);
i_cf = op1_low_32 < op2_low_32;
x_cf = op1 < op2;
i_vf = sborrow( op1_low_32, op2_low_32);
x_vf = sborrow(op1, op2);
local result:$(SIZE) = op1 - op2;
local result_low_32:4 = op1_low_32 - op2_low_32;
i_cf = i_cf || (result_low_32 < CFCopy_32);
x_cf = x_cf || (result < CFcopy);
i_vf = i_vf ^^ sborrow( result_low_32, CFCopy_32);
x_vf = x_vf ^^ sborrow(result,CFcopy);
i_cf = (op1_low_32 < op2_low_32) || (result_low_32 < CFcopy:4);
x_cf = (op1 < op2) || (result < CFcopy);
i_vf = sborrow( op1_low_32, op2_low_32) ^^ sborrow( result_low_32, CFcopy:4);
x_vf = sborrow(op1, op2) ^^ sborrow(result,CFcopy);
}
macro logicflags() {