#define RDTSCP WORD $0x010f; BYTE $0xf9 TEXT tstart(SB), 1, $0	CPUID	RDTSC	MOVL AX, 0(RARG)	MOVL DX, 4(RARG)	RET TEXT _tend(SB), 1, $0	/* it needs MOVL CR0, AX; MOV AX, CR0 but it's userspace */	RDTSC	MOVL AX, 0(RARG)	MOVL DX, 4(RARG)	CPUID	RET TEXT _tendp(SB), 1, $0	RDTSCP	MOVL AX, 0(RARG)	MOVL DX, 4(RARG)	CPUID	RET TEXT cpuid(SB), 1, $0	MOVL ax+8(FP), AX	MOVL cx+16(FP), CX	CPUID	MOVL AX, 0(BP)	MOVL BX, 4(BP)	MOVL CX, 8(BP)	MOVL DX, 12(BP)	RET