include/asm-ppc64/ppc_asm.h - kernel/common - Git at Google

 /*
  * 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.
  */

 #ifndef _PPC64_PPC_ASM_H
 #define _PPC64_PPC_ASM_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_NVGPRS(base)	SAVE_8GPRS(14, base); SAVE_10GPRS(22, base)
 #define REST_NVGPRS(base)	REST_8GPRS(14, base); REST_10GPRS(22, 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 SAVE_VR(n,b,base)	li b,THREAD_VR0+(16*(n));  stvx n,b,base
 #define SAVE_2VRS(n,b,base)	SAVE_VR(n,b,base); SAVE_VR(n+1,b,base)
 #define SAVE_4VRS(n,b,base)	SAVE_2VRS(n,b,base); SAVE_2VRS(n+2,b,base)
 #define SAVE_8VRS(n,b,base)	SAVE_4VRS(n,b,base); SAVE_4VRS(n+4,b,base)
 #define SAVE_16VRS(n,b,base)	SAVE_8VRS(n,b,base); SAVE_8VRS(n+8,b,base)
 #define SAVE_32VRS(n,b,base)	SAVE_16VRS(n,b,base); SAVE_16VRS(n+16,b,base)
 #define REST_VR(n,b,base)	li b,THREAD_VR0+(16*(n)); lvx n,b,base
 #define REST_2VRS(n,b,base)	REST_VR(n,b,base); REST_VR(n+1,b,base)
 #define REST_4VRS(n,b,base)	REST_2VRS(n,b,base); REST_2VRS(n+2,b,base)
 #define REST_8VRS(n,b,base)	REST_4VRS(n,b,base); REST_4VRS(n+4,b,base)
 #define REST_16VRS(n,b,base)	REST_8VRS(n,b,base); REST_8VRS(n+8,b,base)
 #define REST_32VRS(n,b,base)	REST_16VRS(n,b,base); REST_16VRS(n+16,b,base)

 /* 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

 /* Condition Register Bit Fields */

 #define	cr0	0
 #define	cr1	1
 #define	cr2	2
 #define	cr3	3
 #define	cr4	4
 #define	cr5	5
 #define	cr6	6
 #define	cr7	7


 /* General Purpose Registers (GPRs) */

 #define	r0	0
 #define	r1	1
 #define	r2	2
 #define	r3	3
 #define	r4	4
 #define	r5	5
 #define	r6	6
 #define	r7	7
 #define	r8	8
 #define	r9	9
 #define	r10	10
 #define	r11	11
 #define	r12	12
 #define	r13	13
 #define	r14	14
 #define	r15	15
 #define	r16	16
 #define	r17	17
 #define	r18	18
 #define	r19	19
 #define	r20	20
 #define	r21	21
 #define	r22	22
 #define	r23	23
 #define	r24	24
 #define	r25	25
 #define	r26	26
 #define	r27	27
 #define	r28	28
 #define	r29	29
 #define	r30	30
 #define	r31	31


 /* Floating Point Registers (FPRs) */

 #define	fr0	0
 #define	fr1	1
 #define	fr2	2
 #define	fr3	3
 #define	fr4	4
 #define	fr5	5
 #define	fr6	6
 #define	fr7	7
 #define	fr8	8
 #define	fr9	9
 #define	fr10	10
 #define	fr11	11
 #define	fr12	12
 #define	fr13	13
 #define	fr14	14
 #define	fr15	15
 #define	fr16	16
 #define	fr17	17
 #define	fr18	18
 #define	fr19	19
 #define	fr20	20
 #define	fr21	21
 #define	fr22	22
 #define	fr23	23
 #define	fr24	24
 #define	fr25	25
 #define	fr26	26
 #define	fr27	27
 #define	fr28	28
 #define	fr29	29
 #define	fr30	30
 #define	fr31	31

 #define	vr0	0
 #define	vr1	1
 #define	vr2	2
 #define	vr3	3
 #define	vr4	4
 #define	vr5	5
 #define	vr6	6
 #define	vr7	7
 #define	vr8	8
 #define	vr9	9
 #define	vr10	10
 #define	vr11	11
 #define	vr12	12
 #define	vr13	13
 #define	vr14	14
 #define	vr15	15
 #define	vr16	16
 #define	vr17	17
 #define	vr18	18
 #define	vr19	19
 #define	vr20	20
 #define	vr21	21
 #define	vr22	22
 #define	vr23	23
 #define	vr24	24
 #define	vr25	25
 #define	vr26	26
 #define	vr27	27
 #define	vr28	28
 #define	vr29	29
 #define	vr30	30
 #define	vr31	31

 #endif /* _PPC64_PPC_ASM_H */
	/*
	* 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.
	*/

	#ifndef _PPC64_PPC_ASM_H
	#define _PPC64_PPC_ASM_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_NVGPRS(base) SAVE_8GPRS(14, base); SAVE_10GPRS(22, base)
	#define REST_NVGPRS(base) REST_8GPRS(14, base); REST_10GPRS(22, 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 SAVE_VR(n,b,base) li b,THREAD_VR0+(16*(n)); stvx n,b,base
	#define SAVE_2VRS(n,b,base) SAVE_VR(n,b,base); SAVE_VR(n+1,b,base)
	#define SAVE_4VRS(n,b,base) SAVE_2VRS(n,b,base); SAVE_2VRS(n+2,b,base)
	#define SAVE_8VRS(n,b,base) SAVE_4VRS(n,b,base); SAVE_4VRS(n+4,b,base)
	#define SAVE_16VRS(n,b,base) SAVE_8VRS(n,b,base); SAVE_8VRS(n+8,b,base)
	#define SAVE_32VRS(n,b,base) SAVE_16VRS(n,b,base); SAVE_16VRS(n+16,b,base)
	#define REST_VR(n,b,base) li b,THREAD_VR0+(16*(n)); lvx n,b,base
	#define REST_2VRS(n,b,base) REST_VR(n,b,base); REST_VR(n+1,b,base)
	#define REST_4VRS(n,b,base) REST_2VRS(n,b,base); REST_2VRS(n+2,b,base)
	#define REST_8VRS(n,b,base) REST_4VRS(n,b,base); REST_4VRS(n+4,b,base)
	#define REST_16VRS(n,b,base) REST_8VRS(n,b,base); REST_8VRS(n+8,b,base)
	#define REST_32VRS(n,b,base) REST_16VRS(n,b,base); REST_16VRS(n+16,b,base)

	/* 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

	/* Condition Register Bit Fields */

	#define cr0 0
	#define cr1 1
	#define cr2 2
	#define cr3 3
	#define cr4 4
	#define cr5 5
	#define cr6 6
	#define cr7 7


	/* General Purpose Registers (GPRs) */

	#define r0 0
	#define r1 1
	#define r2 2
	#define r3 3
	#define r4 4
	#define r5 5
	#define r6 6
	#define r7 7
	#define r8 8
	#define r9 9
	#define r10 10
	#define r11 11
	#define r12 12
	#define r13 13
	#define r14 14
	#define r15 15
	#define r16 16
	#define r17 17
	#define r18 18
	#define r19 19
	#define r20 20
	#define r21 21
	#define r22 22
	#define r23 23
	#define r24 24
	#define r25 25
	#define r26 26
	#define r27 27
	#define r28 28
	#define r29 29
	#define r30 30
	#define r31 31


	/* Floating Point Registers (FPRs) */

	#define fr0 0
	#define fr1 1
	#define fr2 2
	#define fr3 3
	#define fr4 4
	#define fr5 5
	#define fr6 6
	#define fr7 7
	#define fr8 8
	#define fr9 9
	#define fr10 10
	#define fr11 11
	#define fr12 12
	#define fr13 13
	#define fr14 14
	#define fr15 15
	#define fr16 16
	#define fr17 17
	#define fr18 18
	#define fr19 19
	#define fr20 20
	#define fr21 21
	#define fr22 22
	#define fr23 23
	#define fr24 24
	#define fr25 25
	#define fr26 26
	#define fr27 27
	#define fr28 28
	#define fr29 29
	#define fr30 30
	#define fr31 31

	#define vr0 0
	#define vr1 1
	#define vr2 2
	#define vr3 3
	#define vr4 4
	#define vr5 5
	#define vr6 6
	#define vr7 7
	#define vr8 8
	#define vr9 9
	#define vr10 10
	#define vr11 11
	#define vr12 12
	#define vr13 13
	#define vr14 14
	#define vr15 15
	#define vr16 16
	#define vr17 17
	#define vr18 18
	#define vr19 19
	#define vr20 20
	#define vr21 21
	#define vr22 22
	#define vr23 23
	#define vr24 24
	#define vr25 25
	#define vr26 26
	#define vr27 27
	#define vr28 28
	#define vr29 29
	#define vr30 30
	#define vr31 31

	#endif /* _PPC64_PPC_ASM_H */