www.pudn.com > vxworks0108.rar > asm.h

#ifndef	_PPC_H 
#define	_PPC_H 
 
#define S8		char 
#define U8		unsigned char 
#define U16		unsigned short 
#define U32		unsigned int 
#define U64		long double 
 
/* 
#define SYNC	__asm __volatile("sync") 
#define ISYNC	__asm __volatile("isync") 
#define EIEIO	__asm __volatile("eieio") 
#define NOP		__asm __volatile("nop") 
#define EIEIO_SYNC     __asm __volatile("eieio; sync") 
*/ 
/* Macros for doing byte swapping loads and stores */ 
#define LWBRX(dest, addr)		__asm __volatile("lwbrx %0,0,%1"\ 
								: "=r"(dest) : "r"(addr)) 
#define LHBRX(dest, addr)		__asm __volatile("lhbrx %0,0,%1"\ 
								: "=r"(dest) : "r"(addr)) 
#define STWBRX(value, dest)		__asm __volatile("stwbrx %0,0,%1"\ 
								: : "r"(value), "r"(dest)) 
#define STHBRX(value, dest)		__asm __volatile("sthbrx %0,0,%1"\ 
								: : "r"(value), "r"(dest)) 
 
/* Macros for doing direct loads and stores */ 
#define LBZ(dest, addr)			__asm __volatile("lbz %0,0(%1)"\ 
								: "=r"(dest) : "r"(addr)) 
#define LHZ(dest, addr)			__asm __volatile("lhz %0,0(%1)"\ 
								: "=r"(dest) : "r"(addr)) 
#define LWZ(dest, addr)			__asm __volatile("lwz %0,0(%1)"\ 
								: "=r"(dest) : "r"(addr)) 
#define STB(value, dest)		__asm __volatile("stb %0,0(%1)"\ 
								: : "r"(value), "r"(dest)) 
#define STH(value, dest)		__asm __volatile("sth %0,0(%1)"\ 
								: : "r"(value), "r"(dest)) 
#define STW(value, dest)		__asm __volatile("stw %0,0(%1)"\ 
								: : "r"(value), "r"(dest)) 
 
/* Macros to access DEC reg -- Supervisor mode only*/ 
#define GET_DEC_REG(dest)		__asm __volatile("mfdec %0"\ 
								: "=r"(dest) : ) 
#define SET_DEC_REG(value)		__asm __volatile("mtdec %0"\ 
								: : "r"(value)) 
 
/* Macros to access TB reg -- Must be in supervisor mode to set */ 
#define GET_TBL_REG(dest)		__asm __volatile("mftb %0"\ 
								: "=r"(dest) : ) 
#define GET_TBU_REG(dest)		__asm __volatile("mftbu %0"\ 
								: "=r"(dest) : ) 
#define SET_TBL_REG(value)		__asm __volatile("mttb %0"\ 
								: : "r"(value)) 
#define SET_TBU_REG(value)		__asm __volatile("mttbu %0"\ 
								: : "r"(value)) 
 
/* Count number of leading zeros of a 32 bit value  */ 
#define CNTLZW(result, data)	__asm __volatile("cntlzw %0, %1"\ 
								: "=r" (result) : "r" (data)) 
/* Store Regs in memory     */ 
#define STMW(reg, addr)			__asm __volatile("stmw %0,0(%1)"\ 
								: : "r"(reg), "r"(addr)) 
 
/* Access MSR Register -- Supervisor mode only  */ 
#define MFMSR(dest)				__asm __volatile("mfmsr %0"\ 
								: "=r"(dest) : ) 
#define MTMSR(value)			__asm __volatile("mtmsr %0"\ 
								: : "r"(value)) 
 
#define	ENABLE_EXTERNAL_INTR(msr_reg)	MFMSR(msr_reg); \ 
								MTMSR((msr_reg | 0x8000)) 
 
#define	DISABLE_EXTERNAL_INTR(msr_reg)	MFMSR(msr_reg); \ 
								MTMSR((msr_reg & 0xFFFF7FFF)) 
 
/* Access HID1 Register -- Supervisor mode only  */ 
#define GETHID1(dest)				__asm __volatile("mfspr %0, 1009"\ 
								: "=r"(dest) : ) 
								 
								 
#define GETSRR0(dest)                           __asm __volatile("mfspr %0, 26"\ 
								: "=r"(dest) : ) 
 
 
#define GETSRR1(dest)                           __asm __volatile("mfspr %0, 27"\ 
								: "=r"(dest) : ) 
								 
#define GETLR(dest)                           __asm __volatile("mfspr %0, 8"\ 
								: "=r"(dest) : )							 
#endif