TriCore
®
TC1.6P & TC1.6E
32-bit Unified Processor Core
Instruction Set
V1.0 2013-07
User Manual (Volume 2) 3-372
SUBC
Subtract With Carry
Description
Subtract the contents of data register D[b] from contents of data register D[a] plus the carry bit minus one. Put the
result in data register D[c]. The operands are treated as 32-bit integers. The PSW carry bit is set to the value of
the ALU carry out.
SUBCD[c], D[a], D[b] (RR)
result = D[a] - D[b] + PSW.C - 1;
D[c] = result[31:0];
carry_out = carry(D[a],~D[b],PSW.C);
Status Flags
Examples
subc d3, d1, d2
See Also
SUB, SUBS, SUBS.U, SUBX
C PSW.C = carry_out;
V overflow = (result > 7FFFFFFF
H
) OR (result < -80000000
H
);
if (overflow) then PSW.V = 1 else PSW.V = 0;
SV if (overflow) then PSW.SV = 1 else PSW.SV = PSW.SV;
AV advanced_overflow = result[31] ^ result[30];
if (advanced_overflow) then PSW.AV = 1 else PSW.AV = 0;
SAV if (advanced_overflow) then PSW.SAV = 1 else PSW.SAV = PSW.SAV;
31
c
28 27
0D
H
20 19
-
18 17
-
16 15
b
12 11
a
8 7
0B
H
0
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