ref: 5edeca01b0622463a65c126ebcc29314013fd928
dir: /emu/Linux/arm-tas-v7.S/
.file "arm-tas-v7.S" #ifndef ARMv7 #define DMB mcr p15, 0, r0, c7, c10, 5 #else #define DMB dmb #endif .align 2 .global _tas .type _tas, %function _tas: @ args = 0, pretend = 0, frame = 0 @ frame_needed = 0, uses_anonymous_args = 0 @ link register save eliminated. @ lr needed for prologue DMB mov r1, r0 mov r2, #0xaa tas1: ldrex r0, [r1] cmp r0, #0 bne lockbusy strex r3, r2, [r1] cmp r3, #0 bne tas1 DMB bx lr lockbusy: clrex bx lr .size _tas, .-_tas