1. 根目录:
2. arch
3. powerpc
4. boot
5. ppc_asm.h

#ifndef _PPC64_PPC_ASM_H
#define _PPC64_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.
 */

/* 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

#define SPRN_TBRL	268
#define SPRN_TBRU	269

#define FIXUP_ENDIAN						   \
	tdi   0, 0, 0x48; /* Reverse endian of b . + 8		*/ \
	b     $+36;	  /* Skip trampoline if endian is good	*/ \
	.long 0x05009f42; /* bcl 20,31,$+4			*/ \
	.long 0xa602487d; /* mflr r10				*/ \
	.long 0x1c004a39; /* addi r10,r10,28			*/ \
	.long 0xa600607d; /* mfmsr r11				*/ \
	.long 0x01006b69; /* xori r11,r11,1			*/ \
	.long 0xa6035a7d; /* mtsrr0 r10				*/ \
	.long 0xa6037b7d; /* mtsrr1 r11				*/ \
	.long 0x2400004c  /* rfid				*/

#endif /* _PPC64_PPC_ASM_H */