1 #ifndef _PPC64_PPC_ASM_H 2 #define _PPC64_PPC_ASM_H 3 /* 4 * 5 * Definitions used by various bits of low-level assembly code on PowerPC. 6 * 7 * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan. 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * as published by the Free Software Foundation; either version 12 * 2 of the License, or (at your option) any later version. 13 */ 14 15 /* Condition Register Bit Fields */ 16 17 #define cr0 0 18 #define cr1 1 19 #define cr2 2 20 #define cr3 3 21 #define cr4 4 22 #define cr5 5 23 #define cr6 6 24 #define cr7 7 25 26 27 /* General Purpose Registers (GPRs) */ 28 29 #define r0 0 30 #define r1 1 31 #define r2 2 32 #define r3 3 33 #define r4 4 34 #define r5 5 35 #define r6 6 36 #define r7 7 37 #define r8 8 38 #define r9 9 39 #define r10 10 40 #define r11 11 41 #define r12 12 42 #define r13 13 43 #define r14 14 44 #define r15 15 45 #define r16 16 46 #define r17 17 47 #define r18 18 48 #define r19 19 49 #define r20 20 50 #define r21 21 51 #define r22 22 52 #define r23 23 53 #define r24 24 54 #define r25 25 55 #define r26 26 56 #define r27 27 57 #define r28 28 58 #define r29 29 59 #define r30 30 60 #define r31 31 61 62 #define SPRN_TBRL 268 63 #define SPRN_TBRU 269 64 #define SPRN_HSRR0 0x13A /* Hypervisor Save/Restore 0 */ 65 #define SPRN_HSRR1 0x13B /* Hypervisor Save/Restore 1 */ 66 67 #define MSR_LE 0x0000000000000001 68 69 #define FIXUP_ENDIAN \ 70 tdi 0,0,0x48; /* Reverse endian of b . + 8 */ \ 71 b $+44; /* Skip trampoline if endian is good */ \ 72 .long 0xa600607d; /* mfmsr r11 */ \ 73 .long 0x01006b69; /* xori r11,r11,1 */ \ 74 .long 0x00004039; /* li r10,0 */ \ 75 .long 0x6401417d; /* mtmsrd r10,1 */ \ 76 .long 0x05009f42; /* bcl 20,31,$+4 */ \ 77 .long 0xa602487d; /* mflr r10 */ \ 78 .long 0x14004a39; /* addi r10,r10,20 */ \ 79 .long 0xa6035a7d; /* mtsrr0 r10 */ \ 80 .long 0xa6037b7d; /* mtsrr1 r11 */ \ 81 .long 0x2400004c /* rfid */ 82 83 #ifdef CONFIG_PPC_8xx 84 #define MFTBL(dest) mftb dest 85 #define MFTBU(dest) mftbu dest 86 #else 87 #define MFTBL(dest) mfspr dest, SPRN_TBRL 88 #define MFTBU(dest) mfspr dest, SPRN_TBRU 89 #endif 90 91 #endif /* _PPC64_PPC_ASM_H */ 92