ARM Architecture Reference Manual ARMv7-A and ARMv7-R edition

Instruction Details
A8.6.184 SSAT16
Signed Saturate 16 saturates two signed 16-bit values to a selected signed range.
The Q flag is set if the operation saturates.
Encoding T1 ARMv6T2, ARMv7
SSAT16 ,#,
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1 1 1 1 0 (0) 1 1 0 0 1 0 Rn 0 0 0 0 Rd 0 0 (0)(0) sat_imm
d = UInt(Rd); n = UInt(Rn); saturate_to = UInt(sat_imm)+1;
if BadReg(d) || BadReg(n) then UNPREDICTABLE;
Encoding A1 ARMv6*, ARMv7
SSAT16 ,#,
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
cond 0 1 1 0 1 0 1 0 sat_imm Rd (1)(1)(1)(1) 0 0 1 1 Rn
d = UInt(Rd); n = UInt(Rn); saturate_to = UInt(sat_imm)+1;
if d == 15 || n == 15 then UNPREDICTABLE;
A8-364 Copyright © 1996-1998, 2000, 2004-2008 ARM Limited. All rights reserved. ARM DDI 0406B