ref: 7f224a8f6d343cf0aaf162cc9b9f7d4d62ac78ac
dir: /sys/src/9/omap4/arm.s/
#include "arm.h" /* arm v7 arch defines these */ #define WFI WORD $0xe320f003 /* wait for interrupt */ #define DMB WORD $0xf57ff05f /* data mem. barrier; last f = SY */ #define DSB WORD $0xf57ff04f /* data synch. barrier; last f = SY */ #define ISB WORD $0xf57ff06f /* instr. sync. barrier; last f = SY */ #define NOOP WORD $0xe320f000 #define CLZ(s, d) WORD $(0xe16f0f10 | (d) << 12 | (s)) /* count leading 0s */ #define CPSIE WORD $0xf1080080 /* intr enable: zeroes I bit */ #define CPSID WORD $0xf10c0080 /* intr disable: sets I bit */ #define EWAVE(n)\ MOVW $0x48020000, R0; \ MOVW $n, R1; \ MOVW R1, (R0); #define WAVE(n)\ MOVW $0xE0000000, R0; \ MOVW $n, R1; \ MOVW R1, (R0); #define LDREX(a,r) WORD $(0xe<<28|0x01900f9f | (a)<<16 | (r)<<12) #define STREX(a,v,r) WORD $(0xe<<28|0x01800f90 | (a)<<16 | (r)<<12 | (v)<<0) #define CLREX WORD $0xf57ff01f #define BARRIERS\ MOVW $0, R11; \ MCR CpSC, 0, R11, C(CpCACHE), C(CpCACHEinvi), CpCACHEflushbtc; \ DSB; \ ISB;