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e31c243f98
Use traps 120-126 to emulate atomic cmpxchg32, xchg32, and XOR-, OR-, AND-, SUB- and ADD-to-memory operations for userspace. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
417 lines
18 KiB
C
417 lines
18 KiB
C
/* spr-regs.h: special-purpose registers on the FRV
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*
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* Copyright (C) 2003, 2004 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_SPR_REGS_H
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#define _ASM_SPR_REGS_H
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/*
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* PSR - Processor Status Register
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*/
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#define PSR_ET 0x00000001 /* enable interrupts/exceptions flag */
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#define PSR_PS 0x00000002 /* previous supervisor mode flag */
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#define PSR_S 0x00000004 /* supervisor mode flag */
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#define PSR_PIL 0x00000078 /* processor external interrupt level */
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#define PSR_PIL_0 0x00000000 /* - no interrupt in progress */
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#define PSR_PIL_13 0x00000068 /* - debugging only */
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#define PSR_PIL_14 0x00000070 /* - debugging in progress */
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#define PSR_PIL_15 0x00000078 /* - NMI in progress */
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#define PSR_EM 0x00000080 /* enable media operation */
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#define PSR_EF 0x00000100 /* enable FPU operation */
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#define PSR_BE 0x00001000 /* endianness mode */
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#define PSR_BE_LE 0x00000000 /* - little endian mode */
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#define PSR_BE_BE 0x00001000 /* - big endian mode */
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#define PSR_CM 0x00002000 /* conditional mode */
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#define PSR_NEM 0x00004000 /* non-excepting mode */
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#define PSR_ICE 0x00010000 /* in-circuit emulation mode */
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#define PSR_VERSION_SHIFT 24 /* CPU silicon ID */
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#define PSR_IMPLE_SHIFT 28 /* CPU core ID */
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#define PSR_VERSION(psr) (((psr) >> PSR_VERSION_SHIFT) & 0xf)
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#define PSR_IMPLE(psr) (((psr) >> PSR_IMPLE_SHIFT) & 0xf)
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#define PSR_IMPLE_FR401 0x2
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#define PSR_VERSION_FR401_MB93401 0x0
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#define PSR_VERSION_FR401_MB93401A 0x1
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#define PSR_VERSION_FR401_MB93403 0x2
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#define PSR_IMPLE_FR405 0x4
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#define PSR_VERSION_FR405_MB93405 0x0
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#define PSR_IMPLE_FR451 0x5
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#define PSR_VERSION_FR451_MB93451 0x0
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#define PSR_IMPLE_FR501 0x1
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#define PSR_VERSION_FR501_MB93501 0x1
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#define PSR_VERSION_FR501_MB93501A 0x2
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#define PSR_IMPLE_FR551 0x3
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#define PSR_VERSION_FR551_MB93555 0x1
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#define __get_PSR() ({ unsigned long x; asm volatile("movsg psr,%0" : "=r"(x)); x; })
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#define __set_PSR(V) do { asm volatile("movgs %0,psr" : : "r"(V)); } while(0)
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/*
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* TBR - Trap Base Register
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*/
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#define TBR_TT 0x00000ff0
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#define TBR_TT_INSTR_MMU_MISS (0x01 << 4)
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#define TBR_TT_INSTR_ACC_ERROR (0x02 << 4)
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#define TBR_TT_INSTR_ACC_EXCEP (0x03 << 4)
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#define TBR_TT_PRIV_INSTR (0x06 << 4)
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#define TBR_TT_ILLEGAL_INSTR (0x07 << 4)
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#define TBR_TT_FP_EXCEPTION (0x0d << 4)
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#define TBR_TT_MP_EXCEPTION (0x0e << 4)
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#define TBR_TT_DATA_ACC_ERROR (0x11 << 4)
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#define TBR_TT_DATA_MMU_MISS (0x12 << 4)
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#define TBR_TT_DATA_ACC_EXCEP (0x13 << 4)
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#define TBR_TT_DATA_STR_ERROR (0x14 << 4)
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#define TBR_TT_DIVISION_EXCEP (0x17 << 4)
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#define TBR_TT_COMMIT_EXCEP (0x19 << 4)
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#define TBR_TT_INSTR_TLB_MISS (0x1a << 4)
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#define TBR_TT_DATA_TLB_MISS (0x1b << 4)
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#define TBR_TT_DATA_DAT_EXCEP (0x1d << 4)
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#define TBR_TT_DECREMENT_TIMER (0x1f << 4)
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#define TBR_TT_COMPOUND_EXCEP (0x20 << 4)
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#define TBR_TT_INTERRUPT_1 (0x21 << 4)
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#define TBR_TT_INTERRUPT_2 (0x22 << 4)
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#define TBR_TT_INTERRUPT_3 (0x23 << 4)
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#define TBR_TT_INTERRUPT_4 (0x24 << 4)
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#define TBR_TT_INTERRUPT_5 (0x25 << 4)
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#define TBR_TT_INTERRUPT_6 (0x26 << 4)
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#define TBR_TT_INTERRUPT_7 (0x27 << 4)
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#define TBR_TT_INTERRUPT_8 (0x28 << 4)
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#define TBR_TT_INTERRUPT_9 (0x29 << 4)
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#define TBR_TT_INTERRUPT_10 (0x2a << 4)
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#define TBR_TT_INTERRUPT_11 (0x2b << 4)
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#define TBR_TT_INTERRUPT_12 (0x2c << 4)
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#define TBR_TT_INTERRUPT_13 (0x2d << 4)
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#define TBR_TT_INTERRUPT_14 (0x2e << 4)
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#define TBR_TT_INTERRUPT_15 (0x2f << 4)
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#define TBR_TT_TRAP0 (0x80 << 4)
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#define TBR_TT_TRAP1 (0x81 << 4)
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#define TBR_TT_TRAP2 (0x82 << 4)
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#define TBR_TT_TRAP3 (0x83 << 4)
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#define TBR_TT_TRAP120 (0xf8 << 4)
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#define TBR_TT_TRAP121 (0xf9 << 4)
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#define TBR_TT_TRAP122 (0xfa << 4)
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#define TBR_TT_TRAP123 (0xfb << 4)
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#define TBR_TT_TRAP124 (0xfc << 4)
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#define TBR_TT_TRAP125 (0xfd << 4)
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#define TBR_TT_TRAP126 (0xfe << 4)
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#define TBR_TT_BREAK (0xff << 4)
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#define TBR_TT_ATOMIC_CMPXCHG32 TBR_TT_TRAP120
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#define TBR_TT_ATOMIC_XCHG32 TBR_TT_TRAP121
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#define TBR_TT_ATOMIC_XOR TBR_TT_TRAP122
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#define TBR_TT_ATOMIC_OR TBR_TT_TRAP123
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#define TBR_TT_ATOMIC_AND TBR_TT_TRAP124
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#define TBR_TT_ATOMIC_SUB TBR_TT_TRAP125
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#define TBR_TT_ATOMIC_ADD TBR_TT_TRAP126
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#define __get_TBR() ({ unsigned long x; asm volatile("movsg tbr,%0" : "=r"(x)); x; })
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/*
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* HSR0 - Hardware Status Register 0
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*/
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#define HSR0_PDM 0x00000007 /* power down mode */
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#define HSR0_PDM_NORMAL 0x00000000 /* - normal mode */
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#define HSR0_PDM_CORE_SLEEP 0x00000001 /* - CPU core sleep mode */
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#define HSR0_PDM_BUS_SLEEP 0x00000003 /* - bus sleep mode */
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#define HSR0_PDM_PLL_RUN 0x00000005 /* - PLL run */
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#define HSR0_PDM_PLL_STOP 0x00000007 /* - PLL stop */
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#define HSR0_GRLE 0x00000040 /* GR lower register set enable */
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#define HSR0_GRHE 0x00000080 /* GR higher register set enable */
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#define HSR0_FRLE 0x00000100 /* FR lower register set enable */
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#define HSR0_FRHE 0x00000200 /* FR higher register set enable */
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#define HSR0_GRN 0x00000400 /* GR quantity */
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#define HSR0_GRN_64 0x00000000 /* - 64 GR registers */
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#define HSR0_GRN_32 0x00000400 /* - 32 GR registers */
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#define HSR0_FRN 0x00000800 /* FR quantity */
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#define HSR0_FRN_64 0x00000000 /* - 64 FR registers */
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#define HSR0_FRN_32 0x00000800 /* - 32 FR registers */
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#define HSR0_SA 0x00001000 /* start address (RAMBOOT#) */
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#define HSR0_ETMI 0x00008000 /* enable TIMERI (64-bit up timer) */
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#define HSR0_ETMD 0x00004000 /* enable TIMERD (32-bit down timer) */
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#define HSR0_PEDAT 0x00010000 /* previous DAT mode */
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#define HSR0_XEDAT 0x00020000 /* exception DAT mode */
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#define HSR0_EDAT 0x00080000 /* enable DAT mode */
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#define HSR0_RME 0x00400000 /* enable RAM mode */
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#define HSR0_EMEM 0x00800000 /* enable MMU_Miss mask */
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#define HSR0_EXMMU 0x01000000 /* enable extended MMU mode */
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#define HSR0_EDMMU 0x02000000 /* enable data MMU */
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#define HSR0_EIMMU 0x04000000 /* enable instruction MMU */
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#define HSR0_CBM 0x08000000 /* copy back mode */
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#define HSR0_CBM_WRITE_THRU 0x00000000 /* - write through */
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#define HSR0_CBM_COPY_BACK 0x08000000 /* - copy back */
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#define HSR0_NWA 0x10000000 /* no write allocate */
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#define HSR0_DCE 0x40000000 /* data cache enable */
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#define HSR0_ICE 0x80000000 /* instruction cache enable */
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#define __get_HSR(R) ({ unsigned long x; asm volatile("movsg hsr"#R",%0" : "=r"(x)); x; })
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#define __set_HSR(R,V) do { asm volatile("movgs %0,hsr"#R : : "r"(V)); } while(0)
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/*
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* CCR - Condition Codes Register
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*/
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#define CCR_FCC0 0x0000000f /* FP/Media condition 0 (fcc0 reg) */
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#define CCR_FCC1 0x000000f0 /* FP/Media condition 1 (fcc1 reg) */
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#define CCR_FCC2 0x00000f00 /* FP/Media condition 2 (fcc2 reg) */
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#define CCR_FCC3 0x0000f000 /* FP/Media condition 3 (fcc3 reg) */
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#define CCR_ICC0 0x000f0000 /* Integer condition 0 (icc0 reg) */
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#define CCR_ICC0_C 0x00010000 /* - Carry flag */
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#define CCR_ICC0_V 0x00020000 /* - Overflow flag */
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#define CCR_ICC0_Z 0x00040000 /* - Zero flag */
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#define CCR_ICC0_N 0x00080000 /* - Negative flag */
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#define CCR_ICC1 0x00f00000 /* Integer condition 1 (icc1 reg) */
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#define CCR_ICC2 0x0f000000 /* Integer condition 2 (icc2 reg) */
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#define CCR_ICC3 0xf0000000 /* Integer condition 3 (icc3 reg) */
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/*
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* CCCR - Condition Codes for Conditional Instructions Register
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*/
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#define CCCR_CC0 0x00000003 /* condition 0 (cc0 reg) */
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#define CCCR_CC0_FALSE 0x00000002 /* - condition is false */
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#define CCCR_CC0_TRUE 0x00000003 /* - condition is true */
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#define CCCR_CC1 0x0000000c /* condition 1 (cc1 reg) */
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#define CCCR_CC2 0x00000030 /* condition 2 (cc2 reg) */
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#define CCCR_CC3 0x000000c0 /* condition 3 (cc3 reg) */
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#define CCCR_CC4 0x00000300 /* condition 4 (cc4 reg) */
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#define CCCR_CC5 0x00000c00 /* condition 5 (cc5 reg) */
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#define CCCR_CC6 0x00003000 /* condition 6 (cc6 reg) */
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#define CCCR_CC7 0x0000c000 /* condition 7 (cc7 reg) */
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/*
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* ISR - Integer Status Register
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*/
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#define ISR_EMAM 0x00000001 /* memory misaligned access handling */
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#define ISR_EMAM_EXCEPTION 0x00000000 /* - generate exception */
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#define ISR_EMAM_FUDGE 0x00000001 /* - mask out invalid address bits */
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#define ISR_AEXC 0x00000004 /* accrued [overflow] exception */
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#define ISR_DTT 0x00000018 /* division type trap */
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#define ISR_DTT_IGNORE 0x00000000 /* - ignore division error */
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#define ISR_DTT_DIVBYZERO 0x00000008 /* - generate exception */
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#define ISR_DTT_OVERFLOW 0x00000010 /* - record overflow */
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#define ISR_EDE 0x00000020 /* enable division exception */
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#define ISR_PLI 0x20000000 /* pre-load instruction information */
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#define ISR_QI 0x80000000 /* quad data implementation information */
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/*
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* EPCR0 - Exception PC Register
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*/
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#define EPCR0_V 0x00000001 /* register content validity indicator */
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#define EPCR0_PC 0xfffffffc /* faulting instruction address */
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/*
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* ESR0/14/15 - Exception Status Register
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*/
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#define ESRx_VALID 0x00000001 /* register content validity indicator */
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#define ESRx_EC 0x0000003e /* exception type */
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#define ESRx_EC_DATA_STORE 0x00000000 /* - data_store_error */
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#define ESRx_EC_INSN_ACCESS 0x00000006 /* - instruction_access_error */
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#define ESRx_EC_PRIV_INSN 0x00000008 /* - privileged_instruction */
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#define ESRx_EC_ILL_INSN 0x0000000a /* - illegal_instruction */
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#define ESRx_EC_MP_EXCEP 0x0000001c /* - mp_exception */
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#define ESRx_EC_DATA_ACCESS 0x00000020 /* - data_access_error */
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#define ESRx_EC_DIVISION 0x00000026 /* - division_exception */
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#define ESRx_EC_ITLB_MISS 0x00000034 /* - instruction_access_TLB_miss */
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#define ESRx_EC_DTLB_MISS 0x00000036 /* - data_access_TLB_miss */
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#define ESRx_EC_DATA_ACCESS_DAT 0x0000003a /* - data_access_DAT_exception */
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#define ESR0_IAEC 0x00000100 /* info for instruction-access-exception */
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#define ESR0_IAEC_RESV 0x00000000 /* - reserved */
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#define ESR0_IAEC_PROT_VIOL 0x00000100 /* - protection violation */
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#define ESR0_ATXC 0x00f00000 /* address translation exception code */
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#define ESR0_ATXC_MMU_MISS 0x00000000 /* - MMU miss exception and more (?) */
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#define ESR0_ATXC_MULTI_DAT 0x00800000 /* - multiple DAT entry hit */
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#define ESR0_ATXC_MULTI_SAT 0x00900000 /* - multiple SAT entry hit */
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#define ESR0_ATXC_AMRTLB_MISS 0x00a00000 /* - MMU/TLB miss exception */
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#define ESR0_ATXC_PRIV_EXCEP 0x00c00000 /* - privilege protection fault */
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#define ESR0_ATXC_WP_EXCEP 0x00d00000 /* - write protection fault */
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#define ESR0_EAV 0x00000800 /* true if EAR0 register valid */
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#define ESR15_EAV 0x00000800 /* true if EAR15 register valid */
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/*
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* ESFR1 - Exception Status Valid Flag Register
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*/
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#define ESFR1_ESR0 0x00000001 /* true if ESR0 is valid */
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#define ESFR1_ESR14 0x00004000 /* true if ESR14 is valid */
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#define ESFR1_ESR15 0x00008000 /* true if ESR15 is valid */
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/*
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* MSR - Media Status Register
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*/
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#define MSR0_AOVF 0x00000001 /* overflow exception accrued */
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#define MSRx_OVF 0x00000002 /* overflow exception detected */
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#define MSRx_SIE 0x0000003c /* last SIMD instruction exception detected */
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#define MSRx_SIE_NONE 0x00000000 /* - none detected */
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#define MSRx_SIE_FRkHI_ACCk 0x00000020 /* - exception at FRkHI or ACCk */
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#define MSRx_SIE_FRkLO_ACCk1 0x00000010 /* - exception at FRkLO or ACCk+1 */
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#define MSRx_SIE_FRk1HI_ACCk2 0x00000008 /* - exception at FRk+1HI or ACCk+2 */
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#define MSRx_SIE_FRk1LO_ACCk3 0x00000004 /* - exception at FRk+1LO or ACCk+3 */
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#define MSR0_MTT 0x00007000 /* type of last media trap detected */
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#define MSR0_MTT_NONE 0x00000000 /* - none detected */
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#define MSR0_MTT_OVERFLOW 0x00001000 /* - overflow detected */
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#define MSR0_HI 0x00c00000 /* hardware implementation */
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#define MSR0_HI_ROUNDING 0x00000000 /* - rounding mode */
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#define MSR0_HI_NONROUNDING 0x00c00000 /* - non-rounding mode */
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#define MSR0_EMCI 0x01000000 /* enable media custom instructions */
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#define MSR0_SRDAV 0x10000000 /* select rounding mode of MAVEH */
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#define MSR0_SRDAV_RDAV 0x00000000 /* - controlled by MSR.RDAV */
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#define MSR0_SRDAV_RD 0x10000000 /* - controlled by MSR.RD */
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#define MSR0_RDAV 0x20000000 /* rounding mode of MAVEH */
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#define MSR0_RDAV_NEAREST_MI 0x00000000 /* - round to nearest minus */
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#define MSR0_RDAV_NEAREST_PL 0x20000000 /* - round to nearest plus */
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#define MSR0_RD 0xc0000000 /* rounding mode */
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#define MSR0_RD_NEAREST 0x00000000 /* - nearest */
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#define MSR0_RD_ZERO 0x40000000 /* - zero */
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#define MSR0_RD_POS_INF 0x80000000 /* - postive infinity */
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#define MSR0_RD_NEG_INF 0xc0000000 /* - negative infinity */
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/*
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* IAMPR0-7 - Instruction Address Mapping Register
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* DAMPR0-7 - Data Address Mapping Register
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*/
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#define xAMPRx_V 0x00000001 /* register content validity indicator */
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#define DAMPRx_WP 0x00000002 /* write protect */
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#define DAMPRx_WP_RW 0x00000000 /* - read/write */
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#define DAMPRx_WP_RO 0x00000002 /* - read-only */
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#define xAMPRx_C 0x00000004 /* cached/uncached */
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#define xAMPRx_C_CACHED 0x00000000 /* - cached */
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#define xAMPRx_C_UNCACHED 0x00000004 /* - uncached */
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#define xAMPRx_S 0x00000008 /* supervisor only */
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#define xAMPRx_S_USER 0x00000000 /* - userspace can access */
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#define xAMPRx_S_KERNEL 0x00000008 /* - kernel only */
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#define xAMPRx_SS 0x000000f0 /* segment size */
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#define xAMPRx_SS_16Kb 0x00000000 /* - 16 kilobytes */
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#define xAMPRx_SS_64Kb 0x00000010 /* - 64 kilobytes */
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#define xAMPRx_SS_256Kb 0x00000020 /* - 256 kilobytes */
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#define xAMPRx_SS_1Mb 0x00000030 /* - 1 megabyte */
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#define xAMPRx_SS_2Mb 0x00000040 /* - 2 megabytes */
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#define xAMPRx_SS_4Mb 0x00000050 /* - 4 megabytes */
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#define xAMPRx_SS_8Mb 0x00000060 /* - 8 megabytes */
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#define xAMPRx_SS_16Mb 0x00000070 /* - 16 megabytes */
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#define xAMPRx_SS_32Mb 0x00000080 /* - 32 megabytes */
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#define xAMPRx_SS_64Mb 0x00000090 /* - 64 megabytes */
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#define xAMPRx_SS_128Mb 0x000000a0 /* - 128 megabytes */
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#define xAMPRx_SS_256Mb 0x000000b0 /* - 256 megabytes */
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#define xAMPRx_SS_512Mb 0x000000c0 /* - 512 megabytes */
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#define xAMPRx_RESERVED8 0x00000100 /* reserved bit */
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#define xAMPRx_NG 0x00000200 /* non-global */
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#define xAMPRx_L 0x00000400 /* locked */
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#define xAMPRx_M 0x00000800 /* modified */
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#define xAMPRx_D 0x00001000 /* DAT entry */
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#define xAMPRx_RESERVED13 0x00002000 /* reserved bit */
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#define xAMPRx_PPFN 0xfff00000 /* physical page frame number */
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#define xAMPRx_V_BIT 0
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#define DAMPRx_WP_BIT 1
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#define xAMPRx_C_BIT 2
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#define xAMPRx_S_BIT 3
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#define xAMPRx_RESERVED8_BIT 8
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#define xAMPRx_NG_BIT 9
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#define xAMPRx_L_BIT 10
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#define xAMPRx_M_BIT 11
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#define xAMPRx_D_BIT 12
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#define xAMPRx_RESERVED13_BIT 13
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#define __get_IAMPR(R) ({ unsigned long x; asm volatile("movsg iampr"#R",%0" : "=r"(x)); x; })
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#define __get_DAMPR(R) ({ unsigned long x; asm volatile("movsg dampr"#R",%0" : "=r"(x)); x; })
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#define __get_IAMLR(R) ({ unsigned long x; asm volatile("movsg iamlr"#R",%0" : "=r"(x)); x; })
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#define __get_DAMLR(R) ({ unsigned long x; asm volatile("movsg damlr"#R",%0" : "=r"(x)); x; })
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#define __set_IAMPR(R,V) do { asm volatile("movgs %0,iampr"#R : : "r"(V)); } while(0)
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#define __set_DAMPR(R,V) do { asm volatile("movgs %0,dampr"#R : : "r"(V)); } while(0)
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#define __set_IAMLR(R,V) do { asm volatile("movgs %0,iamlr"#R : : "r"(V)); } while(0)
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#define __set_DAMLR(R,V) do { asm volatile("movgs %0,damlr"#R : : "r"(V)); } while(0)
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#define save_dampr(R, _dampr) \
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do { \
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asm volatile("movsg dampr"R",%0" : "=r"(_dampr)); \
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} while(0)
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#define restore_dampr(R, _dampr) \
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do { \
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asm volatile("movgs %0,dampr"R :: "r"(_dampr)); \
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} while(0)
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/*
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* AMCR - Address Mapping Control Register
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*/
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#define AMCR_IAMRN 0x000000ff /* quantity of IAMPR registers */
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#define AMCR_DAMRN 0x0000ff00 /* quantity of DAMPR registers */
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/*
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* TTBR - Address Translation Table Base Register
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*/
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#define __get_TTBR() ({ unsigned long x; asm volatile("movsg ttbr,%0" : "=r"(x)); x; })
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/*
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* TPXR - TLB Probe Extend Register
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*/
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#define TPXR_E 0x00000001
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#define TPXR_LMAX_SHIFT 20
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#define TPXR_LMAX_SMASK 0xf
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#define TPXR_WMAX_SHIFT 24
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#define TPXR_WMAX_SMASK 0xf
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#define TPXR_WAY_SHIFT 28
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#define TPXR_WAY_SMASK 0xf
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/*
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* DCR - Debug Control Register
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*/
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#define DCR_IBCE3 0x00000001 /* break on conditional insn pointed to by IBAR3 */
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#define DCR_IBE3 0x00000002 /* break on insn pointed to by IBAR3 */
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#define DCR_IBCE1 0x00000004 /* break on conditional insn pointed to by IBAR2 */
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#define DCR_IBE1 0x00000008 /* break on insn pointed to by IBAR2 */
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#define DCR_IBCE2 0x00000010 /* break on conditional insn pointed to by IBAR1 */
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#define DCR_IBE2 0x00000020 /* break on insn pointed to by IBAR1 */
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#define DCR_IBCE0 0x00000040 /* break on conditional insn pointed to by IBAR0 */
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#define DCR_IBE0 0x00000080 /* break on insn pointed to by IBAR0 */
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#define DCR_DDBE1 0x00004000 /* use DBDR1x when checking DBAR1 */
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#define DCR_DWBE1 0x00008000 /* break on store to address in DBAR1/DBMR1x */
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#define DCR_DRBE1 0x00010000 /* break on load from address in DBAR1/DBMR1x */
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#define DCR_DDBE0 0x00020000 /* use DBDR0x when checking DBAR0 */
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#define DCR_DWBE0 0x00040000 /* break on store to address in DBAR0/DBMR0x */
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#define DCR_DRBE0 0x00080000 /* break on load from address in DBAR0/DBMR0x */
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#define DCR_EIM 0x0c000000 /* external interrupt disable */
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#define DCR_IBM 0x10000000 /* instruction break disable */
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#define DCR_SE 0x20000000 /* single step enable */
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#define DCR_EBE 0x40000000 /* exception break enable */
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/*
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* BRR - Break Interrupt Request Register
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*/
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#define BRR_ST 0x00000001 /* single-step detected */
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#define BRR_SB 0x00000002 /* break instruction detected */
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#define BRR_BB 0x00000004 /* branch with hint detected */
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#define BRR_CBB 0x00000008 /* branch to LR detected */
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#define BRR_IBx 0x000000f0 /* hardware breakpoint detected */
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#define BRR_DBx 0x00000f00 /* hardware watchpoint detected */
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#define BRR_DBNEx 0x0000f000 /* ? */
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#define BRR_EBTT 0x00ff0000 /* trap type of exception break */
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#define BRR_TB 0x10000000 /* external break request detected */
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#define BRR_CB 0x20000000 /* ICE break command detected */
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#define BRR_EB 0x40000000 /* exception break detected */
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/*
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* BPSR - Break PSR Save Register
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*/
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#define BPSR_BET 0x00000001 /* former PSR.ET */
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#define BPSR_BS 0x00001000 /* former PSR.S */
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#endif /* _ASM_SPR_REGS_H */
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