text: /*
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001 by Ralf Baechle
   * Copyright (C) 2000 Silicon Graphics, Inc.
   * Modified for further R[236]000 support by Paul M. Antoine, 1996.
   * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
   * Copyright (C) 2000, 07 MIPS Technologies, Inc.
   * Copyright (C) 2003, 2004  Maciej W. Rozycki
   */
  #ifndef _ASM_MIPSREGS_H
  #define _ASM_MIPSREGS_H
  
  #if 0
  #include <linux/linkage.h>
  #endif
  
  /*
   * The following macros are especially useful for __asm__
   * inline assembler.
   */
  #ifndef __STR
  #define __STR(x) #x
  #endif
  #ifndef STR
  #define STR(x) __STR(x)
  #endif
  
  /*
   *  Configure language
   */
  #ifdef __ASSEMBLY__
  #define _ULCAST_
  #else
  #define _ULCAST_ (unsigned long)
  #endif
  
  /*
   * Coprocessor 0 register names
   */
  #define CP0_INDEX $0
  #define CP0_RANDOM $1
  #define CP0_ENTRYLO0 $2
  #define CP0_ENTRYLO1 $3
  #define CP0_CONF $3
  #define CP0_CONTEXT $4
  #define CP0_PAGEMASK $5
  #define CP0_WIRED $6
  #define CP0_INFO $7
  #define CP0_BADVADDR $8
  #define CP0_COUNT $9
  #define CP0_ENTRYHI $10
  #define CP0_COMPARE $11
  #define CP0_STATUS $12
  #define CP0_CAUSE $13
  #define CP0_EPC $14
  #define CP0_PRID $15
  #define CP0_CONFIG $16
  #define CP0_LLADDR $17
  #define CP0_WATCHLO $18
  #define CP0_WATCHHI $19
  #define CP0_XCONTEXT $20
  #define CP0_FRAMEMASK $21
  #define CP0_DIAGNOSTIC $22
  #define CP0_DEBUG $23
  #define CP0_DEPC $24
  #define CP0_PERFORMANCE $25
  #define CP0_ECC $26
  #define CP0_CACHEERR $27
  #define CP0_TAGLO $28
  #define CP0_TAGHI $29
  #define CP0_ERROREPC $30
  #define CP0_DESAVE $31
  
  /*
   * R4640/R4650 cp0 register names.  These registers are listed
   * here only for completeness; without MMU these CPUs are not useable
   * by Linux.  A future ELKS port might take make Linux run on them
   * though ...
   */
  #define CP0_IBASE $0
  #define CP0_IBOUND $1
  #define CP0_DBASE $2
  #define CP0_DBOUND $3
  #define CP0_CALG $17
  #define CP0_IWATCH $18
  #define CP0_DWATCH $19
  
  /*
   * Coprocessor 0 Set 1 register names
   */
  #define CP0_S1_DERRADDR0  $26
  #define CP0_S1_DERRADDR1  $27
  #define CP0_S1_INTCONTROL $20
  
  /*
   * Coprocessor 0 Set 2 register names
   */
  #define CP0_S2_SRSCTL	$12	/* MIPSR2 */
  
  /*
   * Coprocessor 0 Set 3 register names
   */
  #define CP0_S3_SRSMAP	$12	/* MIPSR2 */
  
  /*
   *  TX39 Series
   */
  #define CP0_TX39_CACHE	$7
  
  /*
   * Coprocessor 1 (FPU) register names
   */
  #define CP1_REVISION	$0
  #define CP1_STATUS	$31
  
  /*
   * FPU Status Register Values
   */
  /*
   * Status Register Values
   */
  
  #define FPU_CSR_FLUSH	0x01000000	/* flush denormalised results to 0 */
  #define FPU_CSR_COND	0x00800000	/* $fcc0 */
  #define FPU_CSR_COND0	0x00800000	/* $fcc0 */
  #define FPU_CSR_COND1	0x02000000	/* $fcc1 */
  #define FPU_CSR_COND2	0x04000000	/* $fcc2 */
  #define FPU_CSR_COND3	0x08000000	/* $fcc3 */
  #define FPU_CSR_COND4	0x10000000	/* $fcc4 */
  #define FPU_CSR_COND5	0x20000000	/* $fcc5 */
  #define FPU_CSR_COND6	0x40000000	/* $fcc6 */
  #define FPU_CSR_COND7	0x80000000	/* $fcc7 */
  
  /*
   * X the exception cause indicator
   * E the exception enable
   * S the sticky/flag bit
   */
  #define FPU_CSR_ALL_X	0x0003f000
  #define FPU_CSR_UNI_X	0x00020000
  #define FPU_CSR_INV_X	0x00010000
  #define FPU_CSR_DIV_X	0x00008000
  #define FPU_CSR_OVF_X	0x00004000
  #define FPU_CSR_UDF_X	0x00002000
  #define FPU_CSR_INE_X	0x00001000
  
  #define FPU_CSR_ALL_E	0x00000f80
  #define FPU_CSR_INV_E	0x00000800
  #define FPU_CSR_DIV_E	0x00000400
  #define FPU_CSR_OVF_E	0x00000200
  #define FPU_CSR_UDF_E	0x00000100
  #define FPU_CSR_INE_E	0x00000080
  
  #define FPU_CSR_ALL_S	0x0000007c
  #define FPU_CSR_INV_S	0x00000040
  #define FPU_CSR_DIV_S	0x00000020
  #define FPU_CSR_OVF_S	0x00000010
  #define FPU_CSR_UDF_S	0x00000008
  #define FPU_CSR_INE_S	0x00000004
  
  /* rounding mode */
  #define FPU_CSR_RN	0x0	/* nearest */
  #define FPU_CSR_RZ	0x1	/* towards zero */
  #define FPU_CSR_RU	0x2	/* towards +Infinity */
  #define FPU_CSR_RD	0x3	/* towards -Infinity */
  
  /*
   * Values for PageMask register
   */
  #ifdef CONFIG_CPU_VR41XX
  
  /* Why doesn't stupidity hurt ... */
  
  #define PM_1K		0x00000000
  #define PM_4K		0x00001800
  #define PM_16K		0x00007800
  #define PM_64K		0x0001f800
  #define PM_256K		0x0007f800
  
  #else
  
  #define PM_4K		0x00000000
  #define PM_16K		0x00006000
  #define PM_64K		0x0001e000
  #define PM_256K		0x0007e000
  #define PM_1M		0x001fe000
  #define PM_4M		0x007fe000
  #define PM_16M		0x01ffe000
  #define PM_64M		0x07ffe000
  #define PM_256M		0x1fffe000
  
  #endif
  
  /*
   * Values used for computation of new tlb entries
   */
  #define PL_4K		12
  #define PL_16K		14
  #define PL_64K		16
  #define PL_256K		18
  #define PL_1M		20
  #define PL_4M		22
  #define PL_16M		24
  #define PL_64M		26
  #define PL_256M		28
  
  /*
   * R4x00 interrupt enable / cause bits
   */
  #define IE_SW0		(_ULCAST_(1) <<  8)
  #define IE_SW1		(_ULCAST_(1) <<  9)
  #define IE_IRQ0		(_ULCAST_(1) << 10)
  #define IE_IRQ1		(_ULCAST_(1) << 11)
  #define IE_IRQ2		(_ULCAST_(1) << 12)
  #define IE_IRQ3		(_ULCAST_(1) << 13)
  #define IE_IRQ4		(_ULCAST_(1) << 14)
  #define IE_IRQ5		(_ULCAST_(1) << 15)
  
  /*
   * R4x00 interrupt cause bits
   */
  #define C_SW0		(_ULCAST_(1) <<  8)
  #define C_SW1		(_ULCAST_(1) <<  9)
  #define C_IRQ0		(_ULCAST_(1) << 10)
  #define C_IRQ1		(_ULCAST_(1) << 11)
  #define C_IRQ2		(_ULCAST_(1) << 12)
  #define C_IRQ3		(_ULCAST_(1) << 13)
  #define C_IRQ4		(_ULCAST_(1) << 14)
  #define C_IRQ5		(_ULCAST_(1) << 15)
  
  /*
   * Bitfields in the R4xx0 cp0 status register
   */
  #define ST0_IE			0x00000001
  #define ST0_EXL			0x00000002
  #define ST0_ERL			0x00000004
  #define ST0_KSU			0x00000018
  #  define KSU_USER		0x00000010
  #  define KSU_SUPERVISOR	0x00000008
  #  define KSU_KERNEL		0x00000000
  #define ST0_UX			0x00000020
  #define ST0_SX			0x00000040
  #define ST0_KX			0x00000080
  #define ST0_DE			0x00010000
  #define ST0_CE			0x00020000
  
  /*
   * Setting c0_status.co enables Hit_Writeback and Hit_Writeback_Invalidate
   * cacheops in userspace.  This bit exists only on RM7000 and RM9000
   * processors.
   */
  #define ST0_CO			0x08000000
  
  /*
   * Bitfields in the R[23]000 cp0 status register.
   */
  #define ST0_IEC			0x00000001
  #define ST0_KUC			0x00000002
  #define ST0_IEP			0x00000004
  #define ST0_KUP			0x00000008
  #define ST0_IEO			0x00000010
  #define ST0_KUO			0x00000020
  /* bits 6 & 7 are reserved on R[23]000 */
  #define ST0_ISC			0x00010000
  #define ST0_SWC			0x00020000
  #define ST0_CM			0x00080000
  
  /*
   * Bits specific to the R4640/R4650
   */
  #define ST0_UM			(_ULCAST_(1) <<  4)
  #define ST0_IL			(_ULCAST_(1) << 23)
  #define ST0_DL			(_ULCAST_(1) << 24)
  
  /*
   * Enable the MIPS MDMX and DSP ASEs
   */
  #define ST0_MX			0x01000000
  
  /*
   * Bitfields in the TX39 family CP0 Configuration Register 3
   */
  #define TX39_CONF_ICS_SHIFT	19
  #define TX39_CONF_ICS_MASK	0x00380000
  #define TX39_CONF_ICS_1KB	0x00000000
  #define TX39_CONF_ICS_2KB	0x00080000
  #define TX39_CONF_ICS_4KB	0x00100000
  #define TX39_CONF_ICS_8KB	0x00180000
  #define TX39_CONF_ICS_16KB	0x00200000
  
  #define TX39_CONF_DCS_SHIFT	16
  #define TX39_CONF_DCS_MASK	0x00070000
  #define TX39_CONF_DCS_1KB	0x00000000
  #define TX39_CONF_DCS_2KB	0x00010000
  #define TX39_CONF_DCS_4KB	0x00020000
  #define TX39_CONF_DCS_8KB	0x00030000
  #define TX39_CONF_DCS_16KB	0x00040000
  
  #define TX39_CONF_CWFON		0x00004000
  #define TX39_CONF_WBON		0x00002000
  #define TX39_CONF_RF_SHIFT	10
  #define TX39_CONF_RF_MASK	0x00000c00
  #define TX39_CONF_DOZE		0x00000200
  #define TX39_CONF_HALT		0x00000100
  #define TX39_CONF_LOCK		0x00000080
  #define TX39_CONF_ICE		0x00000020
  #define TX39_CONF_DCE		0x00000010
  #define TX39_CONF_IRSIZE_SHIFT	2
  #define TX39_CONF_IRSIZE_MASK	0x0000000c
  #define TX39_CONF_DRSIZE_SHIFT	0
  #define TX39_CONF_DRSIZE_MASK	0x00000003
  
  /*
   * Status register bits available in all MIPS CPUs.
   */
  #define ST0_IM			0x0000ff00
  #define  STATUSB_IP0		8
  #define  STATUSF_IP0		(_ULCAST_(1) <<  8)
  #define  STATUSB_IP1		9
  #define  STATUSF_IP1		(_ULCAST_(1) <<  9)
  #define  STATUSB_IP2		10
  #define  STATUSF_IP2		(_ULCAST_(1) << 10)
  #define  STATUSB_IP3		11
  #define  STATUSF_IP3		(_ULCAST_(1) << 11)
  #define  STATUSB_IP4		12
  #define  STATUSF_IP4		(_ULCAST_(1) << 12)
  #define  STATUSB_IP5		13
  #define  STATUSF_IP5		(_ULCAST_(1) << 13)
  #define  STATUSB_IP6		14
  #define  STATUSF_IP6		(_ULCAST_(1) << 14)
  #define  STATUSB_IP7		15
  #define  STATUSF_IP7		(_ULCAST_(1) << 15)
  #define  STATUSB_IP8		0
  #define  STATUSF_IP8		(_ULCAST_(1) <<  0)
  #define  STATUSB_IP9		1
  #define  STATUSF_IP9		(_ULCAST_(1) <<  1)
  #define  STATUSB_IP10		2
  #define  STATUSF_IP10		(_ULCAST_(1) <<  2)
  #define  STATUSB_IP11		3
  #define  STATUSF_IP11		(_ULCAST_(1) <<  3)
  #define  STATUSB_IP12		4
  #define  STATUSF_IP12		(_ULCAST_(1) <<  4)
  #define  STATUSB_IP13		5
  #define  STATUSF_IP13		(_ULCAST_(1) <<  5)
  #define  STATUSB_IP14		6
  #define  STATUSF_IP14		(_ULCAST_(1) <<  6)
  #define  STATUSB_IP15		7
  #define  STATUSF_IP15		(_ULCAST_(1) <<  7)
  #define ST0_CH			0x00040000
  #define ST0_SR			0x00100000
  #define ST0_TS			0x00200000
  #define ST0_BEV			0x00400000
  #define ST0_RE			0x02000000
  #define ST0_FR			0x04000000
  #define ST0_CU			0xf0000000
  #define ST0_CU0			0x10000000
  #define ST0_CU1			0x20000000
  #define ST0_CU2			0x40000000
  #define ST0_CU3			0x80000000
  #define ST0_XX			0x80000000	/* MIPS IV naming */
  
  /*
   * Bitfields and bit numbers in the coprocessor 0 cause register.
   *
   * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
   */
  #define  CAUSEB_EXCCODE		2
  #define  CAUSEF_EXCCODE		(_ULCAST_(31)  <<  2)
  #define  CAUSEB_IP		8
  #define  CAUSEF_IP		(_ULCAST_(255) <<  8)
  #define  CAUSEB_IP0		8
  #define  CAUSEF_IP0		(_ULCAST_(1)   <<  8)
  #define  CAUSEB_IP1		9
  #define  CAUSEF_IP1		(_ULCAST_(1)   <<  9)
  #define  CAUSEB_IP2		10
  #define  CAUSEF_IP2		(_ULCAST_(1)   << 10)
  #define  CAUSEB_IP3		11
  #define  CAUSEF_IP3		(_ULCAST_(1)   << 11)
  #define  CAUSEB_IP4		12
  #define  CAUSEF_IP4		(_ULCAST_(1)   << 12)
  #define  CAUSEB_IP5		13
  #define  CAUSEF_IP5		(_ULCAST_(1)   << 13)
  #define  CAUSEB_IP6		14
  #define  CAUSEF_IP6		(_ULCAST_(1)   << 14)
  #define  CAUSEB_IP7		15
  #define  CAUSEF_IP7		(_ULCAST_(1)   << 15)
  #define  CAUSEB_IV		23
  #define  CAUSEF_IV		(_ULCAST_(1)   << 23)
  #define  CAUSEB_CE		28
  #define  CAUSEF_CE		(_ULCAST_(3)   << 28)
  #define  CAUSEB_BD		31
  #define  CAUSEF_BD		(_ULCAST_(1)   << 31)
  
  /*
   * Bits in the coprocessor 0 config register.
   */
  /* Generic bits.  */
  #define CONF_CM_CACHABLE_NO_WA		0
  #define CONF_CM_CACHABLE_WA		1
  #define CONF_CM_UNCACHED		2
  #define CONF_CM_CACHABLE_NONCOHERENT	3
  #define CONF_CM_CACHABLE_CE		4
  #define CONF_CM_CACHABLE_COW		5
  #define CONF_CM_CACHABLE_CUW		6
  #define CONF_CM_CACHABLE_ACCELERATED	7
  #define CONF_CM_CMASK			7
  #define CONF_BE			(_ULCAST_(1) << 15)
  
  /* Bits common to various processors.  */
  #define CONF_CU			(_ULCAST_(1) <<  3)
  #define CONF_DB			(_ULCAST_(1) <<  4)
  #define CONF_IB			(_ULCAST_(1) <<  5)
  #define CONF_DC			(_ULCAST_(7) <<  6)
  #define CONF_IC			(_ULCAST_(7) <<  9)
  #define CONF_EB			(_ULCAST_(1) << 13)
  #define CONF_EM			(_ULCAST_(1) << 14)
  #define CONF_SM			(_ULCAST_(1) << 16)
  #define CONF_SC			(_ULCAST_(1) << 17)
  #define CONF_EW			(_ULCAST_(3) << 18)
  #define CONF_EP			(_ULCAST_(15)<< 24)
  #define CONF_EC			(_ULCAST_(7) << 28)
  #define CONF_CM			(_ULCAST_(1) << 31)
  
  /* Bits specific to the R4xx0.  */
  #define R4K_CONF_SW		(_ULCAST_(1) << 20)
  #define R4K_CONF_SS		(_ULCAST_(1) << 21)
  #define R4K_CONF_SB		(_ULCAST_(3) << 22)
  
  /* Bits specific to the R5000.  */
  #define R5K_CONF_SE		(_ULCAST_(1) << 12)
  #define R5K_CONF_SS		(_ULCAST_(3) << 20)
  
  /* Bits specific to the RM7000.  */
  #define RM7K_CONF_SE		(_ULCAST_(1) <<  3)
  #define RM7K_CONF_TE		(_ULCAST_(1) << 12)
  #define RM7K_CONF_CLK		(_ULCAST_(1) << 16)
  #define RM7K_CONF_TC		(_ULCAST_(1) << 17)
  #define RM7K_CONF_SI		(_ULCAST_(3) << 20)
  #define RM7K_CONF_SC		(_ULCAST_(1) << 31)
  
  /* Bits specific to the R10000.  */
  #define R10K_CONF_DN		(_ULCAST_(3) <<  3)
  #define R10K_CONF_CT		(_ULCAST_(1) <<  5)
  #define R10K_CONF_PE		(_ULCAST_(1) <<  6)
  #define R10K_CONF_PM		(_ULCAST_(3) <<  7)
  #define R10K_CONF_EC		(_ULCAST_(15)<<  9)
  #define R10K_CONF_SB		(_ULCAST_(1) << 13)
  #define R10K_CONF_SK		(_ULCAST_(1) << 14)
  #define R10K_CONF_SS		(_ULCAST_(7) << 16)
  #define R10K_CONF_SC		(_ULCAST_(7) << 19)
  #define R10K_CONF_DC		(_ULCAST_(7) << 26)
  #define R10K_CONF_IC		(_ULCAST_(7) << 29)
  
  /* Bits specific to the VR41xx.  */
  #define VR41_CONF_CS		(_ULCAST_(1) << 12)
  #define VR41_CONF_P4K		(_ULCAST_(1) << 13)
  #define VR41_CONF_BP		(_ULCAST_(1) << 16)
  #define VR41_CONF_M16		(_ULCAST_(1) << 20)
  #define VR41_CONF_AD		(_ULCAST_(1) << 23)
  
  /* Bits specific to the R30xx.  */
  #define R30XX_CONF_FDM		(_ULCAST_(1) << 19)
  #define R30XX_CONF_REV		(_ULCAST_(1) << 22)
  #define R30XX_CONF_AC		(_ULCAST_(1) << 23)
  #define R30XX_CONF_RF		(_ULCAST_(1) << 24)
  #define R30XX_CONF_HALT		(_ULCAST_(1) << 25)
  #define R30XX_CONF_FPINT	(_ULCAST_(7) << 26)
  #define R30XX_CONF_DBR		(_ULCAST_(1) << 29)
  #define R30XX_CONF_SB		(_ULCAST_(1) << 30)
  #define R30XX_CONF_LOCK		(_ULCAST_(1) << 31)
  
  /* Bits specific to the TX49.  */
  #define TX49_CONF_DC		(_ULCAST_(1) << 16)
  #define TX49_CONF_IC		(_ULCAST_(1) << 17)  /* conflict with CONF_SC */
  #define TX49_CONF_HALT		(_ULCAST_(1) << 18)
  #define TX49_CONF_CWFON		(_ULCAST_(1) << 27)
  
  /* Bits specific to the MIPS32/64 PRA.  */
  #define MIPS_CONF_MT		(_ULCAST_(7) <<  7)
  #define MIPS_CONF_AR		(_ULCAST_(7) << 10)
  #define MIPS_CONF_AT		(_ULCAST_(3) << 13)
  #define MIPS_CONF_M		(_ULCAST_(1) << 31)
  
  /*
   * Bits in the MIPS32/64 PRA coprocessor 0 config registers 1 and above.
   */
  #define MIPS_CONF1_FP		(_ULCAST_(1) <<  0)
  #define MIPS_CONF1_EP		(_ULCAST_(1) <<  1)
  #define MIPS_CONF1_CA		(_ULCAST_(1) <<  2)
  #define MIPS_CONF1_WR		(_ULCAST_(1) <<  3)
  #define MIPS_CONF1_PC		(_ULCAST_(1) <<  4)
  #define MIPS_CONF1_MD		(_ULCAST_(1) <<  5)
  #define MIPS_CONF1_C2		(_ULCAST_(1) <<  6)
  #define MIPS_CONF1_DA_SHIFT	7
  #define MIPS_CONF1_DA		(_ULCAST_(7) <<  7)
  #define MIPS_CONF1_DL_SHIFT	10
  #define MIPS_CONF1_DL		(_ULCAST_(7) << 10)
  #define MIPS_CONF1_DS_SHIFT	13
  #define MIPS_CONF1_DS		(_ULCAST_(7) << 13)
  #define MIPS_CONF1_IA_SHIFT	16
  #define MIPS_CONF1_IA		(_ULCAST_(7) << 16)
  #define MIPS_CONF1_IL_SHIFT	19
  #define MIPS_CONF1_IL		(_ULCAST_(7) << 19)
  #define MIPS_CONF1_IS_SHIFT	22
  #define MIPS_CONF1_IS		(_ULCAST_(7) << 22)
  #define MIPS_CONF1_TLBS		(_ULCAST_(63)<< 25)
  
  #define MIPS_CONF2_SA		(_ULCAST_(15)<<  0)
  #define MIPS_CONF2_SL		(_ULCAST_(15)<<  4)
  #define MIPS_CONF2_SS		(_ULCAST_(15)<<  8)
  #define MIPS_CONF2_SU		(_ULCAST_(15)<< 12)
  #define MIPS_CONF2_TA		(_ULCAST_(15)<< 16)
  #define MIPS_CONF2_TL		(_ULCAST_(15)<< 20)
  #define MIPS_CONF2_TS		(_ULCAST_(15)<< 24)
  #define MIPS_CONF2_TU		(_ULCAST_(7) << 28)
  
  #define MIPS_CONF3_TL		(_ULCAST_(1) <<  0)
  #define MIPS_CONF3_SM		(_ULCAST_(1) <<  1)
  #define MIPS_CONF3_MT		(_ULCAST_(1) <<  2)
  #define MIPS_CONF3_SP		(_ULCAST_(1) <<  4)
  #define MIPS_CONF3_VINT		(_ULCAST_(1) <<  5)
  #define MIPS_CONF3_VEIC		(_ULCAST_(1) <<  6)
  #define MIPS_CONF3_LPA		(_ULCAST_(1) <<  7)
  #define MIPS_CONF3_DSP		(_ULCAST_(1) << 10)
  #define MIPS_CONF3_ULRI		(_ULCAST_(1) << 13)
  
  #define MIPS_CONF7_WII		(_ULCAST_(1) << 31)
  
  #define MIPS_CONF7_RPS		(_ULCAST_(1) << 2)
  
  /*
   * Bits in the MIPS32/64 coprocessor 1 (FPU) revision register.
   */
  #define MIPS_FPIR_S		(_ULCAST_(1) << 16)
  #define MIPS_FPIR_D		(_ULCAST_(1) << 17)
  #define MIPS_FPIR_PS		(_ULCAST_(1) << 18)
  #define MIPS_FPIR_3D		(_ULCAST_(1) << 19)
  #define MIPS_FPIR_W		(_ULCAST_(1) << 20)
  #define MIPS_FPIR_L		(_ULCAST_(1) << 21)
  #define MIPS_FPIR_F64		(_ULCAST_(1) << 22)
  
  #ifndef __ASSEMBLY__
  
  /*
   * Functions to access the R10000 performance counters.  These are basically
   * mfc0 and mtc0 instructions from and to coprocessor register with a 5-bit
   * performance counter number encoded into bits 1 ... 5 of the instruction.
   * Only performance counters 0 to 1 actually exist, so for a non-R10000 aware
   * disassembler these will look like an access to sel 0 or 1.
   */
  #define read_r10k_perf_cntr(counter)				\
  ({								\
  	unsigned int __res;					\
  	__asm__ __volatile__(					\
  	"mfpc\t%0, %1"						\
  	: "=r" (__res)						\
  	: "i" (counter));					\
  								\
  	__res;							\
  })
  
  #define write_r10k_perf_cntr(counter,val)			\
  do {								\
  	__asm__ __volatile__(					\
  	"mtpc\t%0, %1"						\
  	:							\
  	: "r" (val), "i" (counter));				\
  } while (0)
  
  #define read_r10k_perf_event(counter)				\
  ({								\
  	unsigned int __res;					\
  	__asm__ __volatile__(					\
  	"mfps\t%0, %1"						\
  	: "=r" (__res)						\
  	: "i" (counter));					\
  								\
  	__res;							\
  })
  
  #define write_r10k_perf_cntl(counter,val)			\
  do {								\
  	__asm__ __volatile__(					\
  	"mtps\t%0, %1"						\
  	:							\
  	: "r" (val), "i" (counter));				\
  } while (0)
  
  /*
   * Macros to access the system control coprocessor
   */
  
  #define __read_32bit_c0_register(source, sel)				\
  ({ int __res;								\
  	if (sel == 0)							\
  		__asm__ __volatile__(					\
  			"mfc0\t%0, " #source "\n\t"			\
  			: "=r" (__res));				\
  	else								\
  		__asm__ __volatile__(					\
  			".set\tmips32\n\t"				\
  			"mfc0\t%0, " #source ", " #sel "\n\t"		\
  			".set\tmips0\n\t"				\
  			: "=r" (__res));				\
  	__res;								\
  })
  
  #define __read_64bit_c0_register(source, sel)				\
  ({ unsigned long long __res;						\
  	if (sizeof(unsigned long) == 4)					\
  		__res = __read_64bit_c0_split(source, sel);		\
  	else if (sel == 0)						\
  		__asm__ __volatile__(					\
  			".set\tmips3\n\t"				\
  			"dmfc0\t%0, " #source "\n\t"			\
  			".set\tmips0"					\
  			: "=r" (__res));				\
  	else								\
  		__asm__ __volatile__(					\
  			".set\tmips64\n\t"				\
  			"dmfc0\t%0, " #source ", " #sel "\n\t"		\
  			".set\tmips0"					\
  			: "=r" (__res));				\
  	__res;								\
  })
  
  #define __write_32bit_c0_register(register, sel, value)			\
  do {									\
  	if (sel == 0)							\
  		__asm__ __volatile__(					\
  			"mtc0\t%z0, " #register "\n\t"			\
  			: : "Jr" ((unsigned int)(value)));		\
  	else								\
  		__asm__ __volatile__(					\
  			".set\tmips32\n\t"				\
  			"mtc0\t%z0, " #register ", " #sel "\n\t"	\
  			".set\tmips0"					\
  			: : "Jr" ((unsigned int)(value)));		\
  } while (0)
  
  #define __write_64bit_c0_register(register, sel, value)			\
  do {									\
  	if (sizeof(unsigned long) == 4)					\
  		__write_64bit_c0_split(register, sel, value);		\
  	else if (sel == 0)						\
  		__asm__ __volatile__(					\
  			".set\tmips3\n\t"				\
  			"dmtc0\t%z0, " #register "\n\t"			\
  			".set\tmips0"					\
  			: : "Jr" (value));				\
  	else								\
  		__asm__ __volatile__(					\
  			".set\tmips64\n\t"				\
  			"dmtc0\t%z0, " #register ", " #sel "\n\t"	\
  			".set\tmips0"					\
  			: : "Jr" (value));				\
  } while (0)
  
  #define __read_ulong_c0_register(reg, sel)				\
  	((sizeof(unsigned long) == 4) ?					\
  	(unsigned long) __read_32bit_c0_register(reg, sel) :		\
  	(unsigned long) __read_64bit_c0_register(reg, sel))
  
  #define __write_ulong_c0_register(reg, sel, val)			\
  do {									\
  	if (sizeof(unsigned long) == 4)					\
  		__write_32bit_c0_register(reg, sel, val);		\
  	else								\
  		__write_64bit_c0_register(reg, sel, val);		\
  } while (0)
  
  /*
   * On RM7000/RM9000 these are uses to access cop0 set 1 registers
   */
  #define __read_32bit_c0_ctrl_register(source)				\
  ({ int __res;								\
  	__asm__ __volatile__(						\
  		"cfc0\t%0, " #source "\n\t"				\
  		: "=r" (__res));					\
  	__res;								\
  })
  
  #define __write_32bit_c0_ctrl_register(register, value)			\
  do {									\
  	__asm__ __volatile__(						\
  		"ctc0\t%z0, " #register "\n\t"				\
  		: : "Jr" ((unsigned int)(value)));			\
  } while (0)
  
  /*
   * These versions are only needed for systems with more than 38 bits of
   * physical address space running the 32-bit kernel.  That's none atm :-)
   */
  #define __read_64bit_c0_split(source, sel)				\
  ({									\
  	unsigned long long __val;					\
  	unsigned long __flags;						\
  									\
  	local_irq_save(__flags);					\
  	if (sel == 0)							\
  		__asm__ __volatile__(					\
  			".set\tmips64\n\t"				\
  			"dmfc0\t%M0, " #source "\n\t"			\
  			"dsll\t%L0, %M0, 32\n\t"			\
  			"dsrl\t%M0, %M0, 32\n\t"			\
  			"dsrl\t%L0, %L0, 32\n\t"			\
  			".set\tmips0"					\
  			: "=r" (__val));				\
  	else								\
  		__asm__ __volatile__(					\
  			".set\tmips64\n\t"				\
  			"dmfc0\t%M0, " #source ", " #sel "\n\t"		\
  			"dsll\t%L0, %M0, 32\n\t"			\
  			"dsrl\t%M0, %M0, 32\n\t"			\
  			"dsrl\t%L0, %L0, 32\n\t"			\
  			".set\tmips0"					\
  			: "=r" (__val));				\
  	local_irq_restore(__flags);					\
  									\
  	__val;								\
  })
  
  #define __write_64bit_c0_split(source, sel, val)			\
  do {									\
  	unsigned long __flags;						\
  									\
  	local_irq_save(__flags);					\
  	if (sel == 0)							\
  		__asm__ __volatile__(					\
  			".set\tmips64\n\t"				\
  			"dsll\t%L0, %L0, 32\n\t"			\
  			"dsrl\t%L0, %L0, 32\n\t"			\
  			"dsll\t%M0, %M0, 32\n\t"			\
  			"or\t%L0, %L0, %M0\n\t"				\
  			"dmtc0\t%L0, " #source "\n\t"			\
  			".set\tmips0"					\
  			: : "r" (val));					\
  	else								\
  		__asm__ __volatile__(					\
  			".set\tmips64\n\t"				\
  			"dsll\t%L0, %L0, 32\n\t"			\
  			"dsrl\t%L0, %L0, 32\n\t"			\
  			"dsll\t%M0, %M0, 32\n\t"			\
  			"or\t%L0, %L0, %M0\n\t"				\
  			"dmtc0\t%L0, " #source ", " #sel "\n\t"		\
  			".set\tmips0"					\
  			: : "r" (val));					\
  	local_irq_restore(__flags);					\
  } while (0)
  
  #define read_c0_index()		__read_32bit_c0_register($0, 0)
  #define write_c0_index(val)	__write_32bit_c0_register($0, 0, val)
  
  #define read_c0_entrylo0()	__read_ulong_c0_register($2, 0)
  #define write_c0_entrylo0(val)	__write_ulong_c0_register($2, 0, val)
  
  #define read_c0_entrylo1()	__read_ulong_c0_register($3, 0)
  #define write_c0_entrylo1(val)	__write_ulong_c0_register($3, 0, val)
  
  #define read_c0_conf()		__read_32bit_c0_register($3, 0)
  #define write_c0_conf(val)	__write_32bit_c0_register($3, 0, val)
  
  #define read_c0_context()	__read_ulong_c0_register($4, 0)
  #define write_c0_context(val)	__write_ulong_c0_register($4, 0, val)
  
  #define read_c0_userlocal()	__read_ulong_c0_register($4, 2)
  #define write_c0_userlocal(val)	__write_ulong_c0_register($4, 2, val)
  
  #define read_c0_pagemask()	__read_32bit_c0_register($5, 0)
  #define write_c0_pagemask(val)	__write_32bit_c0_register($5, 0, val)
  
  #define read_c0_wired()		__read_32bit_c0_register($6, 0)
  #define write_c0_wired(val)	__write_32bit_c0_register($6, 0, val)
  
  #define read_c0_info()		__read_32bit_c0_register($7, 0)
  
  #define read_c0_cache()		__read_32bit_c0_register($7, 0)	/* TX39xx */
  #define write_c0_cache(val)	__write_32bit_c0_register($7, 0, val)
  
  #define read_c0_badvaddr()	__read_ulong_c0_register($8, 0)
  #define write_c0_badvaddr(val)	__write_ulong_c0_register($8, 0, val)
  
  #define read_c0_count()		__read_32bit_c0_register($9, 0)
  #define write_c0_count(val)	__write_32bit_c0_register($9, 0, val)
  
  #define read_c0_count2()	__read_32bit_c0_register($9, 6) /* pnx8550 */
  #define write_c0_count2(val)	__write_32bit_c0_register($9, 6, val)
  
  #define read_c0_count3()	__read_32bit_c0_register($9, 7) /* pnx8550 */
  #define write_c0_count3(val)	__write_32bit_c0_register($9, 7, val)
  
  #define read_c0_entryhi()	__read_ulong_c0_register($10, 0)
  #define write_c0_entryhi(val)	__write_ulong_c0_register($10, 0, val)
  
  #define read_c0_compare()	__read_32bit_c0_register($11, 0)
  #define write_c0_compare(val)	__write_32bit_c0_register($11, 0, val)
  
  #define read_c0_compare2()	__read_32bit_c0_register($11, 6) /* pnx8550 */
  #define write_c0_compare2(val)	__write_32bit_c0_register($11, 6, val)
  
  #define read_c0_compare3()	__read_32bit_c0_register($11, 7) /* pnx8550 */
  #define write_c0_compare3(val)	__write_32bit_c0_register($11, 7, val)
  
  #define read_c0_status()	__read_32bit_c0_register($12, 0)
  #ifdef CONFIG_MIPS_MT_SMTC
  #define write_c0_status(val)						\
  do {									\
  	__write_32bit_c0_register($12, 0, val);				\
  	__ehb();							\
  } while (0)
  #else
  /*
   * Legacy non-SMTC code, which may be hazardous
   * but which might not support EHB
   */
  #define write_c0_status(val)	__write_32bit_c0_register($12, 0, val)
  #endif /* CONFIG_MIPS_MT_SMTC */
  
  #define read_c0_cause()		__read_32bit_c0_register($13, 0)
  #define write_c0_cause(val)	__write_32bit_c0_register($13, 0, val)
  
  #define read_c0_epc()		__read_ulong_c0_register($14, 0)
  #define write_c0_epc(val)	__write_ulong_c0_register($14, 0, val)
  
  #define read_c0_prid()		__read_32bit_c0_register($15, 0)
  
  #define read_c0_config()	__read_32bit_c0_register($16, 0)
  #define read_c0_config1()	__read_32bit_c0_register($16, 1)
  #define read_c0_config2()	__read_32bit_c0_register($16, 2)
  #define read_c0_config3()	__read_32bit_c0_register($16, 3)
  #define read_c0_config4()	__read_32bit_c0_register($16, 4)
  #define read_c0_config5()	__read_32bit_c0_register($16, 5)
  #define read_c0_config6()	__read_32bit_c0_register($16, 6)
  #define read_c0_config7()	__read_32bit_c0_register($16, 7)
  #define write_c0_config(val)	__write_32bit_c0_register($16, 0, val)
  #define write_c0_config1(val)	__write_32bit_c0_register($16, 1, val)
  #define write_c0_config2(val)	__write_32bit_c0_register($16, 2, val)
  #define write_c0_config3(val)	__write_32bit_c0_register($16, 3, val)
  #define write_c0_config4(val)	__write_32bit_c0_register($16, 4, val)
  #define write_c0_config5(val)	__write_32bit_c0_register($16, 5, val)
  #define write_c0_config6(val)	__write_32bit_c0_register($16, 6, val)
  #define write_c0_config7(val)	__write_32bit_c0_register($16, 7, val)
  
  /*
   * The WatchLo register.  There may be upto 8 of them.
   */
  #define read_c0_watchlo0()	__read_ulong_c0_register($18, 0)
  #define read_c0_watchlo1()	__read_ulong_c0_register($18, 1)
  #define read_c0_watchlo2()	__read_ulong_c0_register($18, 2)
  #define read_c0_watchlo3()	__read_ulong_c0_register($18, 3)
  #define read_c0_watchlo4()	__read_ulong_c0_register($18, 4)
  #define read_c0_watchlo5()	__read_ulong_c0_register($18, 5)
  #define read_c0_watchlo6()	__read_ulong_c0_register($18, 6)
  #define read_c0_watchlo7()	__read_ulong_c0_register($18, 7)
  #define write_c0_watchlo0(val)	__write_ulong_c0_register($18, 0, val)
  #define write_c0_watchlo1(val)	__write_ulong_c0_register($18, 1, val)
  #define write_c0_watchlo2(val)	__write_ulong_c0_register($18, 2, val)
  #define write_c0_watchlo3(val)	__write_ulong_c0_register($18, 3, val)
  #define write_c0_watchlo4(val)	__write_ulong_c0_register($18, 4, val)
  #define write_c0_watchlo5(val)	__write_ulong_c0_register($18, 5, val)
  #define write_c0_watchlo6(val)	__write_ulong_c0_register($18, 6, val)
  #define write_c0_watchlo7(val)	__write_ulong_c0_register($18, 7, val)
  
  /*
   * The WatchHi register.  There may be upto 8 of them.
   */
  #define read_c0_watchhi0()	__read_32bit_c0_register($19, 0)
  #define read_c0_watchhi1()	__read_32bit_c0_register($19, 1)
  #define read_c0_watchhi2()	__read_32bit_c0_register($19, 2)
  #define read_c0_watchhi3()	__read_32bit_c0_register($19, 3)
  #define read_c0_watchhi4()	__read_32bit_c0_register($19, 4)
  #define read_c0_watchhi5()	__read_32bit_c0_register($19, 5)
  #define read_c0_watchhi6()	__read_32bit_c0_register($19, 6)
  #define read_c0_watchhi7()	__read_32bit_c0_register($19, 7)
  
  #define write_c0_watchhi0(val)	__write_32bit_c0_register($19, 0, val)
  #define write_c0_watchhi1(val)	__write_32bit_c0_register($19, 1, val)
  #define write_c0_watchhi2(val)	__write_32bit_c0_register($19, 2, val)
  #define write_c0_watchhi3(val)	__write_32bit_c0_register($19, 3, val)
  #define write_c0_watchhi4(val)	__write_32bit_c0_register($19, 4, val)
  #define write_c0_watchhi5(val)	__write_32bit_c0_register($19, 5, val)
  #define write_c0_watchhi6(val)	__write_32bit_c0_register($19, 6, val)
  #define write_c0_watchhi7(val)	__write_32bit_c0_register($19, 7, val)
  
  #define read_c0_xcontext()	__read_ulong_c0_register($20, 0)
  #define write_c0_xcontext(val)	__write_ulong_c0_register($20, 0, val)
  
  #define read_c0_intcontrol()	__read_32bit_c0_ctrl_register($20)
  #define write_c0_intcontrol(val) __write_32bit_c0_ctrl_register($20, val)
  
  #define read_c0_framemask()	__read_32bit_c0_register($21, 0)
  #define write_c0_framemask(val)	__write_32bit_c0_register($21, 0, val)
  
  /* RM9000 PerfControl performance counter control register */
  #define read_c0_perfcontrol()	__read_32bit_c0_register($22, 0)
  #define write_c0_perfcontrol(val) __write_32bit_c0_register($22, 0, val)
  
  #define read_c0_diag()		__read_32bit_c0_register($22, 0)
  #define write_c0_diag(val)	__write_32bit_c0_register($22, 0, val)
  
  #define read_c0_diag1()		__read_32bit_c0_register($22, 1)
  #define write_c0_diag1(val)	__write_32bit_c0_register($22, 1, val)
  
  #define read_c0_diag2()		__read_32bit_c0_register($22, 2)
  #define write_c0_diag2(val)	__write_32bit_c0_register($22, 2, val)
  
  #define read_c0_diag3()		__read_32bit_c0_register($22, 3)
  #define write_c0_diag3(val)	__write_32bit_c0_register($22, 3, val)
  
  #define read_c0_diag4()		__read_32bit_c0_register($22, 4)
  #define write_c0_diag4(val)	__write_32bit_c0_register($22, 4, val)
  
  #define read_c0_diag5()		__read_32bit_c0_register($22, 5)
  #define write_c0_diag5(val)	__write_32bit_c0_register($22, 5, val)
  
  #define read_c0_debug()		__read_32bit_c0_register($23, 0)
  #define write_c0_debug(val)	__write_32bit_c0_register($23, 0, val)
  
  #define read_c0_depc()		__read_ulong_c0_register($24, 0)
  #define write_c0_depc(val)	__write_ulong_c0_register($24, 0, val)
  
  /*
   * MIPS32 / MIPS64 performance counters
   */
  #define read_c0_perfctrl0()	__read_32bit_c0_register($25, 0)
  #define write_c0_perfctrl0(val)	__write_32bit_c0_register($25, 0, val)
  #define read_c0_perfcntr0()	__read_32bit_c0_register($25, 1)
  #define write_c0_perfcntr0(val)	__write_32bit_c0_register($25, 1, val)
  #define read_c0_perfctrl1()	__read_32bit_c0_register($25, 2)
  #define write_c0_perfctrl1(val)	__write_32bit_c0_register($25, 2, val)
  #define read_c0_perfcntr1()	__read_32bit_c0_register($25, 3)
  #define write_c0_perfcntr1(val)	__write_32bit_c0_register($25, 3, val)
  #define read_c0_perfctrl2()	__read_32bit_c0_register($25, 4)
  #define write_c0_perfctrl2(val)	__write_32bit_c0_register($25, 4, val)
  #define read_c0_perfcntr2()	__read_32bit_c0_register($25, 5)
  #define write_c0_perfcntr2(val)	__write_32bit_c0_register($25, 5, val)
  #define read_c0_perfctrl3()	__read_32bit_c0_register($25, 6)
  #define write_c0_perfctrl3(val)	__write_32bit_c0_register($25, 6, val)
  #define read_c0_perfcntr3()	__read_32bit_c0_register($25, 7)
  #define write_c0_perfcntr3(val)	__write_32bit_c0_register($25, 7, val)
  
  /* RM9000 PerfCount performance counter register */
  #define read_c0_perfcount()	__read_64bit_c0_register($25, 0)
  #define write_c0_perfcount(val)	__write_64bit_c0_register($25, 0, val)
  
  #define read_c0_ecc()		__read_32bit_c0_register($26, 0)
  #define write_c0_ecc(val)	__write_32bit_c0_register($26, 0, val)
  
  #define read_c0_derraddr0()	__read_ulong_c0_register($26, 1)
  #define write_c0_derraddr0(val)	__write_ulong_c0_register($26, 1, val)
  
  #define read_c0_cacheerr()	__read_32bit_c0_register($27, 0)
  
  #define read_c0_derraddr1()	__read_ulong_c0_register($27, 1)
  #define write_c0_derraddr1(val)	__write_ulong_c0_register($27, 1, val)
  
  #define read_c0_taglo()		__read_32bit_c0_register($28, 0)
  #define write_c0_taglo(val)	__write_32bit_c0_register($28, 0, val)
  
  #define read_c0_dtaglo()	__read_32bit_c0_register($28, 2)
  #define write_c0_dtaglo(val)	__write_32bit_c0_register($28, 2, val)
  
  #define read_c0_taghi()		__read_32bit_c0_register($29, 0)
  #define write_c0_taghi(val)	__write_32bit_c0_register($29, 0, val)
  
  #define read_c0_errorepc()	__read_ulong_c0_register($30, 0)
  #define write_c0_errorepc(val)	__write_ulong_c0_register($30, 0, val)
  
  /* MIPSR2 */
  #define read_c0_hwrena()	__read_32bit_c0_register($7, 0)
  #define write_c0_hwrena(val)	__write_32bit_c0_register($7, 0, val)
  
  #define read_c0_intctl()	__read_32bit_c0_register($12, 1)
  #define write_c0_intctl(val)	__write_32bit_c0_register($12, 1, val)
  
  #define read_c0_srsctl()	__read_32bit_c0_register($12, 2)
  #define write_c0_srsctl(val)	__write_32bit_c0_register($12, 2, val)
  
  #define read_c0_srsmap()	__read_32bit_c0_register($12, 3)
  #define write_c0_srsmap(val)	__write_32bit_c0_register($12, 3, val)
  
  #define read_c0_ebase()		__read_32bit_c0_register($15, 1)
  #define write_c0_ebase(val)	__write_32bit_c0_register($15, 1, val)
  
  /*
   * Macros to access the floating point coprocessor control registers
   */
  #define read_32bit_cp1_register(source)				\
  ({ int __res;							\
  	__asm__ __volatile__(					\
  	".set\tpush\n\t"					\
  	".set\treorder\n\t"					\
  	"cfc1\t%0,"STR(source)"\n\t"				\
  	".set\tpop"						\
  	: "=r" (__res));					\
  	__res;})
  
  #define rddsp(mask)							\
  ({									\
  	unsigned int __res;						\
  									\
  	__asm__ __volatile__(						\
  	"	.set	push				\n"		\
  	"	.set	noat				\n"		\
  	"	# rddsp $1, %x1				\n"		\
  	"	.word	0x7c000cb8 | (%x1 << 16)	\n"		\
  	"	move	%0, $1				\n"		\
  	"	.set	pop				\n"		\
  	: "=r" (__res)							\
  	: "i" (mask));							\
  	__res;								\
  })
  
  #define wrdsp(val, mask)						\
  do {									\
  	__asm__ __volatile__(						\
  	"	.set	push					\n"	\
  	"	.set	noat					\n"	\
  	"	move	$1, %0					\n"	\
  	"	# wrdsp $1, %x1					\n"	\
  	"	.word	0x7c2004f8 | (%x1 << 11)		\n"	\
  	"	.set	pop					\n"	\
  	:								\
  	: "r" (val), "i" (mask));					\
  } while (0)
  
  #define mfhi0()								\
  ({									\
  	unsigned long __treg;						\
  									\
  	__asm__ __volatile__(						\
  	"	.set	push			\n"			\
  	"	.set	noat			\n"			\
  	"	# mfhi	%0, $ac0		\n"			\
  	"	.word	0x00000810		\n"			\
  	"	move	%0, $1			\n"			\
  	"	.set	pop			\n"			\
  	: "=r" (__treg));						\
  	__treg;								\
  })
  
  #define mfhi1()								\
  ({									\
  	unsigned long __treg;						\
  									\
  	__asm__ __volatile__(						\
  	"	.set	push			\n"			\
  	"	.set	noat			\n"			\
  	"	# mfhi	%0, $ac1		\n"			\
  	"	.word	0x00200810		\n"			\
  	"	move	%0, $1			\n"			\
  	"	.set	pop			\n"			\
  	: "=r" (__treg));						\
  	__treg;								\
  })
  
  #define mfhi2()								\
  ({									\
  	unsigned long __treg;						\
  									\
  	__asm__ __volatile__(						\
  	"	.set	push			\n"			\
  	"	.set	noat			\n"			\
  	"	# mfhi	%0, $ac2		\n"			\
  	"	.word	0x00400810		\n"			\
  	"	move	%0, $1			\n"			\
  	"	.set	pop			\n"			\
  	: "=r" (__treg));						\
  	__treg;								\
  })
  
  #define mfhi3()								\
  ({									\
  	unsigned long __treg;						\
  									\
  	__asm__ __volatile__(						\
  	"	.set	push			\n"			\
  	"	.set	noat			\n"			\
  	"	# mfhi	%0, $ac3		\n"			\
  	"	.word	0x00600810		\n"			\
  	"	move	%0, $1			\n"			\
  	"	.set	pop			\n"			\
  	: "=r" (__treg));						\
  	__treg;								\
  })
  
  #define mflo0()								\
  ({									\
  	unsigned long __treg;						\
  									\
  	__asm__ __volatile__(						\
  	"	.set	push			\n"			\
  	"	.set	noat			\n"			\
  	"	# mflo	%0, $ac0		\n"			\
  	"	.word	0x00000812		\n"			\
  	"	move	%0, $1			\n"			\
  	"	.set	pop			\n"			\
  	: "=r" (__treg));						\
  	__treg;								\
  })
  
  #define mflo1()								\
  ({									\
  	unsigned long __treg;						\
  									\
  	__asm__ __volatile__(						\
  	"	.set	push			\n"			\
  	"	.set	noat			\n"			\
  	"	# mflo	%0, $ac1		\n"			\
  	"	.word	0x00200812		\n"			\
  	"	move	%0, $1			\n"			\
  	"	.set	pop			\n"			\
  	: "=r" (__treg));						\
  	__treg;								\
  })
  
  #define mflo2()								\
  ({									\
  	unsigned long __treg;						\
  									\
  	__asm__ __volatile__(						\
  	"	.set	push			\n"			\
  	"	.set	noat			\n"			\
  	"	# mflo	%0, $ac2		\n"			\
  	"	.word	0x00400812		\n"			\
  	"	move	%0, $1			\n"			\
  	"	.set	pop			\n"			\
  	: "=r" (__treg));						\
  	__treg;								\
  })
  
  #define mflo3()								\
  ({									\
  	unsigned long __treg;						\
  									\
  	__asm__ __volatile__(						\
  	"	.set	push			\n"			\
  	"	.set	noat			\n"			\
  	"	# mflo	%0, $ac3		\n"			\
  	"	.word	0x00600812		\n"			\
  	"	move	%0, $1			\n"			\
  	"	.set	pop			\n"			\
  	: "=r" (__treg));						\
  	__treg;								\
  })
  
  #define mthi0(x)							\
  do {									\
  	__asm__ __volatile__(						\
  	"	.set	push					\n"	\
  	"	.set	noat					\n"	\
  	"	move	$1, %0					\n"	\
  	"	# mthi	$1, $ac0				\n"	\
  	"	.word	0x00200011				\n"	\
  	"	.set	pop					\n"	\
  	:								\
  	: "r" (x));							\
  } while (0)
  
  #define mthi1(x)							\
  do {									\
  	__asm__ __volatile__(						\
  	"	.set	push					\n"	\
  	"	.set	noat					\n"	\
  	"	move	$1, %0					\n"	\
  	"	# mthi	$1, $ac1				\n"	\
  	"	.word	0x00200811				\n"	\
  	"	.set	pop					\n"	\
  	:								\
  	: "r" (x));							\
  } while (0)
  
  #define mthi2(x)							\
  do {									\
  	__asm__ __volatile__(						\
  	"	.set	push					\n"	\
  	"	.set	noat					\n"	\
  	"	move	$1, %0					\n"	\
  	"	# mthi	$1, $ac2				\n"	\
  	"	.word	0x00201011				\n"	\
  	"	.set	pop					\n"	\
  	:								\
  	: "r" (x));							\
  } while (0)
  
  #define mthi3(x)							\
  do {									\
  	__asm__ __volatile__(						\
  	"	.set	push					\n"	\
  	"	.set	noat					\n"	\
  	"	move	$1, %0					\n"	\
  	"	# mthi	$1, $ac3				\n"	\
  	"	.word	0x00201811				\n"	\
  	"	.set	pop					\n"	\
  	:								\
  	: "r" (x));							\
  } while (0)
  
  #define mtlo0(x)							\
  do {									\
  	__asm__ __volatile__(						\
  	"	.set	push					\n"	\
  	"	.set	noat					\n"	\
  	"	move	$1, %0					\n"	\
  	"	# mtlo	$1, $ac0				\n"	\
  	"	.word	0x00200013				\n"	\
  	"	.set	pop					\n"	\
  	:								\
  	: "r" (x));							\
  } while (0)
  
  #define mtlo1(x)							\
  do {									\
  	__asm__ __volatile__(						\
  	"	.set	push					\n"	\
  	"	.set	noat					\n"	\
  	"	move	$1, %0					\n"	\
  	"	# mtlo	$1, $ac1				\n"	\
  	"	.word	0x00200813				\n"	\
  	"	.set	pop					\n"	\
  	:								\
  	: "r" (x));							\
  } while (0)
  
  #define mtlo2(x)							\
  do {									\
  	__asm__ __volatile__(						\
  	"	.set	push					\n"	\
  	"	.set	noat					\n"	\
  	"	move	$1, %0					\n"	\
  	"	# mtlo	$1, $ac2				\n"	\
  	"	.word	0x00201013				\n"	\
  	"	.set	pop					\n"	\
  	:								\
  	: "r" (x));							\
  } while (0)
  
  #define mtlo3(x)							\
  do {									\
  	__asm__ __volatile__(						\
  	"	.set	push					\n"	\
  	"	.set	noat					\n"	\
  	"	move	$1, %0					\n"	\
  	"	# mtlo	$1, $ac3				\n"	\
  	"	.word	0x00201813				\n"	\
  	"	.set	pop					\n"	\
  	:								\
  	: "r" (x));							\
  } while (0)
  
  /*
   * TLB operations.
   *
   * It is responsibility of the caller to take care of any TLB hazards.
   */
  static inline void tlb_probe(void)
  {
  	__asm__ __volatile__(
  		".set noreorder\n\t"
  		"tlbp\n\t"
  		".set reorder");
  }
  
  static inline void tlb_read(void)
  {
  #if MIPS34K_MISSED_ITLB_WAR
  	int res = 0;
  
  	__asm__ __volatile__(
  	"	.set	push					\n"
  	"	.set	noreorder				\n"
  	"	.set	noat					\n"
  	"	.set	mips32r2				\n"
  	"	.word	0x41610001		# dvpe $1	\n"
  	"	move	%0, $1					\n"
  	"	ehb						\n"
  	"	.set	pop					\n"
  	: "=r" (res));
  
  	instruction_hazard();
  #endif
  
  	__asm__ __volatile__(
  		".set noreorder\n\t"
  		"tlbr\n\t"
  		".set reorder");
  
  #if MIPS34K_MISSED_ITLB_WAR
  	if ((res & _ULCAST_(1)))
  		__asm__ __volatile__(
  		"	.set	push				\n"
  		"	.set	noreorder			\n"
  		"	.set	noat				\n"
  		"	.set	mips32r2			\n"
  		"	.word	0x41600021	# evpe		\n"
  		"	ehb					\n"
  		"	.set	pop				\n");
  #endif
  }
  
  static inline void tlb_write_indexed(void)
  {
  	__asm__ __volatile__(
  		".set noreorder\n\t"
  		"tlbwi\n\t"
  		".set reorder");
  }
  
  static inline void tlb_write_random(void)
  {
  	__asm__ __volatile__(
  		".set noreorder\n\t"
  		"tlbwr\n\t"
  		".set reorder");
  }
  
  /*
   * Manipulate bits in a c0 register.
   */
  #define __BUILD_SET_C0(name)					\
  static inline unsigned int					\
  set_c0_##name(unsigned int set)					\
  {								\
  	unsigned int res;					\
  								\
  	res = read_c0_##name();					\
  	res |= set;						\
  	write_c0_##name(res);					\
  								\
  	return res;						\
  }								\
  								\
  static inline unsigned int					\
  clear_c0_##name(unsigned int clear)				\
  {								\
  	unsigned int res;					\
  								\
  	res = read_c0_##name();					\
  	res &= ~clear;						\
  	write_c0_##name(res);					\
  								\
  	return res;						\
  }								\
  								\
  static inline unsigned int					\
  change_c0_##name(unsigned int change, unsigned int new)		\
  {								\
  	unsigned int res;					\
  								\
  	res = read_c0_##name();					\
  	res &= ~change;						\
  	res |= (new & change);					\
  	write_c0_##name(res);					\
  								\
  	return res;						\
  }
  
  __BUILD_SET_C0(status)
  __BUILD_SET_C0(cause)
  __BUILD_SET_C0(config)
  __BUILD_SET_C0(intcontrol)
  __BUILD_SET_C0(intctl)
  __BUILD_SET_C0(srsmap)
  
  #endif /* !__ASSEMBLY__ */
  
  #endif /* _ASM_MIPSREGS_H */
  