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3
3-115 M32R-FPU Software Manual (Rev.1.01)
SUBXSUBX
arithmetic operation instruction
Subtract with borrow
[Mnemonic]
SUBX Rdest,Rsrc
[Function]
Subtract
Rdest = ( unsigned ) Rdest - ( unsigned ) Rsrc - C;
C = borrow ? 1 : 0;
[Description]
SUBX subtracts Rsrc and C from Rdest and puts the result in Rdest.
The condition bit (C) is set when the subtraction result cannot be represented by a 32-bit
unsigned integer; otherwise it is cleared.
[EIT occurrence]
None
[Encoding]
dest0000
0001 src
SUBX Rdest,Rsrc
INSTRUCTIONS
3.2 Instruction description
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