.text .align 4 .code 32 .global negate .type negate, %function negate: MVN r0,r0 ADD r0,#1 CMP r0,#0x8000 SUBEQ r0,#1 BX lr # MVN r0,r0 # ADD r0,#1 # CMP r0,#(1 << 16) # ASREQ r0,r0,#1 # SXTAH r0,r1,r0 # QADD r0,r0,r1 # SSAT r0,#16,r0 # BX lr
