ppc_asm.h
上传用户：jlfgdled
上传日期：2013-04-10
资源大小：33168k
文件大小：4k
- /*
- * arch/ppc64/kernel/ppc_asm.h
- *
- * Definitions used by various bits of low-level assembly code on PowerPC.
- *
- * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
- #include <linux/config.h>
- #include <asm/ppc_asm.tmpl>
- #include "ppc_defs.h"
- /*
- * Macros for storing registers into and loading registers from
- * exception frames.
- */
- #define SAVE_GPR(n, base) std n,GPR0+8*(n)(base)
- #define SAVE_2GPRS(n, base) SAVE_GPR(n, base); SAVE_GPR(n+1, base)
- #define SAVE_4GPRS(n, base) SAVE_2GPRS(n, base); SAVE_2GPRS(n+2, base)
- #define SAVE_8GPRS(n, base) SAVE_4GPRS(n, base); SAVE_4GPRS(n+4, base)
- #define SAVE_10GPRS(n, base) SAVE_8GPRS(n, base); SAVE_2GPRS(n+8, base)
- #define REST_GPR(n, base) ld n,GPR0+8*(n)(base)
- #define REST_2GPRS(n, base) REST_GPR(n, base); REST_GPR(n+1, base)
- #define REST_4GPRS(n, base) REST_2GPRS(n, base); REST_2GPRS(n+2, base)
- #define REST_8GPRS(n, base) REST_4GPRS(n, base); REST_4GPRS(n+4, base)
- #define REST_10GPRS(n, base) REST_8GPRS(n, base); REST_2GPRS(n+8, base)
- #define SAVE_FPR(n, base) stfd n,THREAD_FPR0+8*(n)(base)
- #define SAVE_2FPRS(n, base) SAVE_FPR(n, base); SAVE_FPR(n+1, base)
- #define SAVE_4FPRS(n, base) SAVE_2FPRS(n, base); SAVE_2FPRS(n+2, base)
- #define SAVE_8FPRS(n, base) SAVE_4FPRS(n, base); SAVE_4FPRS(n+4, base)
- #define SAVE_16FPRS(n, base) SAVE_8FPRS(n, base); SAVE_8FPRS(n+8, base)
- #define SAVE_32FPRS(n, base) SAVE_16FPRS(n, base); SAVE_16FPRS(n+16, base)
- #define REST_FPR(n, base) lfd n,THREAD_FPR0+8*(n)(base)
- #define REST_2FPRS(n, base) REST_FPR(n, base); REST_FPR(n+1, base)
- #define REST_4FPRS(n, base) REST_2FPRS(n, base); REST_2FPRS(n+2, base)
- #define REST_8FPRS(n, base) REST_4FPRS(n, base); REST_4FPRS(n+4, base)
- #define REST_16FPRS(n, base) REST_8FPRS(n, base); REST_8FPRS(n+8, base)
- #define REST_32FPRS(n, base) REST_16FPRS(n, base); REST_16FPRS(n+16, base)
- #define CHECKANYINT(ra,rb)
- mfspr rb,SPRG3; /* Get Paca address */
- ld ra,PACALPPACA+LPPACAANYINT(rb); /* Get pending interrupt flags */
- cmpldi 0,ra,0;
- /* Macros to adjust thread priority for Iseries hardware multithreading */
- #define HMT_LOW or 1,1,1
- #define HMT_MEDIUM or 2,2,2
- #define HMT_HIGH or 3,3,3
- /* Insert the high 32 bits of the MSR into what will be the new
- MSR (via SRR1 and rfid) This preserves the MSR.SF and MSR.ISF
- bits. */
- #define FIX_SRR1(ra, rb)
- mr rb,ra;
- mfmsr ra;
- rldimi ra,rb,0,32
- #define CLR_TOP32(r) rlwinm (r),(r),0,0,31 /* clear top 32 bits */
- /*
- * LOADADDR( rn, name )
- * loads the address of 'name' into 'rn'
- *
- * LOADBASE( rn, name )
- * loads the address (less the low 16 bits) of 'name' into 'rn'
- * suitable for base+disp addressing
- */
- #define LOADADDR(rn,name)
- lis rn,name##@highest;
- ori rn,rn,name##@higher;
- rldicr rn,rn,32,31;
- oris rn,rn,name##@h;
- ori rn,rn,name##@l
- #define LOADBASE(rn,name)
- lis rn,name@highest;
- ori rn,rn,name@higher;
- rldicr rn,rn,32,31;
- oris rn,rn,name@ha
- #define SET_REG_TO_CONST(reg, value)
- lis reg,(((value)>>48)&0xFFFF);
- ori reg,reg,(((value)>>32)&0xFFFF);
- rldicr reg,reg,32,31;
- oris reg,reg,(((value)>>16)&0xFFFF);
- ori reg,reg,((value)&0xFFFF);
- #define SET_REG_TO_LABEL(reg, label)
- lis reg,(label)@highest;
- ori reg,reg,(label)@higher;
- rldicr reg,reg,32,31;
- oris reg,reg,(label)@h;
- ori reg,reg,(label)@l;
- /* PPPBBB - DRENG If KERNELBASE is always 0xC0...,
- * Then we can easily do this with one asm insn. -Peter
- */
- #define tophys(rd,rs)
- lis rd,((KERNELBASE>>48)&0xFFFF);
- rldicr rd,rd,32,31;
- sub rd,rs,rd
- #define tovirt(rd,rs)
- lis rd,((KERNELBASE>>48)&0xFFFF);
- rldicr rd,rd,32,31;
- add rd,rs,rd
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