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rockbox/utils/hwstub/stub/mips.h
Amaury Pouly 9bb6050d40 hwstub: rewrite exception catching 
Since we can catch exceptions like data aborts on read/write, it takes very
little to also catch exceptions in calls. When extending this with the catching
of illegal instructions, the call instruction now becomes much more robust and
also for address and instruction probing. Since we can catch several types of
exception, rename set_data_abort_jmp to set_exception_jmp. At the same time,
simplify the logic in read/write request handlers. Also fix a bug in ARM
jump code: it was using
  stmia r1, {..., pc}
as if pc would get current pc + 8 but this is actually implementation defined
on older ARMs (typically pc + 12) and deprecated on newer ARMs, so rewrite the
code avoid that. The set_exception_jmp() function now also reports the exception
type.

Change-Id: Icd0dd52d2456b361b27c4776be09c3d13528ed93
2017-01-24 15:34:19 +01:00

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/**************************************************************************
* *
* PROJECT : MIPS port for uC/OS-II *
* *
* MODULE : MIPS.h *
* *
* AUTHOR : Michael Anburaj *
* URL : http://geocities.com/michaelanburaj/ *
* EMAIL: michaelanburaj@hotmail.com *
* *
* PROCESSOR : MIPS 4Kc (32 bit RISC) - ATLAS board *
* *
* TOOL-CHAIN : SDE & Cygnus *
* *
* DESCRIPTION : *
* MIPS processor definitions. *
* The basic CPU definitions are found in the file archdefs.h, which *
* is included by mips.h. *
* *
* mips.h implements aliases for some of the definitions in archdefs.h *
* and adds various definitions. *
* *
**************************************************************************/
#ifndef __MIPS_H__
#define __MIPS_H__
#include "mips-archdefs.h"
/* ********************************************************************* */
/* Module configuration */
/* ********************************************************************* */
/* Interface macro & data definition */
#ifndef MSK
#define MSK(n) ((1 << (n)) - 1)
#endif
/* CPU registers */
#define SYS_CPUREG_ZERO 0
#define SYS_CPUREG_AT 1
#define SYS_CPUREG_V0 2
#define SYS_CPUREG_V1 3
#define SYS_CPUREG_A0 4
#define SYS_CPUREG_A1 5
#define SYS_CPUREG_A2 6
#define SYS_CPUREG_A3 7
#define SYS_CPUREG_T0 8
#define SYS_CPUREG_T1 9
#define SYS_CPUREG_T2 10
#define SYS_CPUREG_T3 11
#define SYS_CPUREG_T4 12
#define SYS_CPUREG_T5 13
#define SYS_CPUREG_T6 14
#define SYS_CPUREG_T7 15
#define SYS_CPUREG_S0 16
#define SYS_CPUREG_S1 17
#define SYS_CPUREG_S2 18
#define SYS_CPUREG_S3 19
#define SYS_CPUREG_S4 20
#define SYS_CPUREG_S5 21
#define SYS_CPUREG_S6 22
#define SYS_CPUREG_S7 23
#define SYS_CPUREG_T8 24
#define SYS_CPUREG_T9 25
#define SYS_CPUREG_K0 26
#define SYS_CPUREG_K1 27
#define SYS_CPUREG_GP 28
#define SYS_CPUREG_SP 29
#define SYS_CPUREG_S8 30
#define SYS_CPUREG_FP SYS_CPUREG_S8
#define SYS_CPUREG_RA 31
/* CPU register fp ($30) has an alias s8 */
#define s8 fp
/* Aliases for System Control Coprocessor (CP0) registers */
#define C0_INDEX C0_Index
#define C0_RANDOM C0_Random
#define C0_ENTRYLO0 C0_EntryLo0
#define C0_ENTRYLO1 C0_EntryLo1
#define C0_CONTEXT C0_Context
#define C0_PAGEMASK C0_PageMask
#define C0_WIRED C0_Wired
#define C0_BADVADDR C0_BadVAddr
#define C0_COUNT C0_Count
#define C0_ENTRYHI C0_EntryHi
#define C0_COMPARE C0_Compare
#define C0_STATUS C0_Status
#define C0_CAUSE C0_Cause
#ifdef C0_PRID /* ArchDefs has an obsolete def. of C0_PRID */
#undef C0_PRID
#endif
#define C0_PRID C0_PRId
#define C0_CONFIG C0_Config
#define C0_CONFIG1 C0_Config1
#define C0_LLADDR C0_LLAddr
#define C0_WATCHLO C0_WatchLo
#define C0_WATCHHI C0_WatchHi
#define C0_DEBUG C0_Debug
#define C0_PERFCNT C0_PerfCnt
#define C0_ERRCTL C0_ErrCtl
#define C0_CACHEERR C0_CacheErr
#define C0_TAGLO C0_TagLo
#define C0_DATALO C0_DataLo
#define C0_TAGHI C0_TagHi
#define C0_DATAHI C0_DataHi
#define C0_ERROREPC C0_ErrorEPC
#if 0
#define C0_DESAVE C0_DESAVE
#define C0_EPC C0_EPC
#define C0_DEPC C0_DEPC
#endif
/* System Control Coprocessor (CP0) registers select fields */
#define C0_INDEX_SEL 0 /* TLB Index */
#define C0_RANDOM_SEL 0 /* TLB Random */
#define C0_TLBLO0_SEL 0 /* TLB EntryLo0 */
#define C0_TLBLO1_SEL 0 /* TLB EntryLo1 */
#define C0_CONTEXT_SEL 0 /* Context */
#define C0_PAGEMASK_SEL 0 /* TLB PageMask */
#define C0_WIRED_SEL 0 /* TLB Wired */
#define C0_BADVADDR_SEL 0 /* Bad Virtual Address */
#define C0_COUNT_SEL 0 /* Count */
#define C0_ENTRYHI_SEL 0 /* TLB EntryHi */
#define C0_COMPARE_SEL 0 /* Compare */
#define C0_STATUS_SEL 0 /* Processor Status */
#define C0_CAUSE_SEL 0 /* Exception Cause */
#define C0_EPC_SEL 0 /* Exception PC */
#define C0_PRID_SEL 0 /* Processor Revision Indentifier */
#define C0_CONFIG_SEL 0 /* Config */
#define C0_CONFIG1_SEL 1 /* Config1 */
#define C0_LLADDR_SEL 0 /* LLAddr */
#define C0_WATCHLO_SEL 0 /* WatchpointLo */
#define C0_WATCHHI_SEL 0 /* WatchpointHi */
#define C0_DEBUG_SEL 0 /* EJTAG Debug Register */
#define C0_DEPC_SEL 0 /* Program counter at last EJTAG debug exception */
#define C0_PERFCNT_SEL 0 /* Performance counter interface */
#define C0_ERRCTL_SEL 0 /* ERRCTL */
#define C0_CACHEERR_SEL 0 /* CacheErr */
#define C0_TAGLO_SEL 0 /* TagLo */
#define C0_DATALO_SEL 1 /* DataLo */
#define C0_DTAGLO_SEL 2 /* DTagLo */
#define C0_TAGHI_SEL 0 /* TagHi */
#define C0_DATAHI_SEL 1 /* DataHi */
#define C0_DTAGHI_SEL 2 /* DTagHi */
#define C0_ERROREPC_SEL 0 /* ErrorEPC */
#define C0_DESAVE_SEL 0 /* EJTAG dbg exc. save register */
/* C0_CONFIG register encoding */
#define C0_CONFIG_M_SHF S_ConfigMore
#define C0_CONFIG_M_MSK M_ConfigMore
#define C0_CONFIG_M_BIT C0_CONFIG_M_MSK
#define C0_CONFIG_BE_SHF S_ConfigBE
#define C0_CONFIG_BE_MSK M_ConfigBE
#define C0_CONFIG_BE_BIT C0_CONFIG_BE_MSK
#define C0_CONFIG_AT_SHF S_ConfigAT
#define C0_CONFIG_AT_MSK M_ConfigAT
#define C0_CONFIG_AT_MIPS32 K_ConfigAT_MIPS32
#define C0_CONFIG_AT_MIPS64_32ADDR K_ConfigAT_MIPS64S
#define C0_CONFIG_AT_MIPS64 K_ConfigAT_MIPS64
#define C0_CONFIG_AR_SHF S_ConfigAR
#define C0_CONFIG_AR_MSK M_ConfigAR
#define C0_CONFIG_MT_SHF S_ConfigMT
#define C0_CONFIG_MT_MSK M_ConfigMT
#define C0_CONFIG_MT_NONE K_ConfigMT_NoMMU
#define C0_CONFIG_MT_TLB K_ConfigMT_TLBMMU
#define C0_CONFIG_MT_BAT K_ConfigMT_BATMMU
#define C0_CONFIG_MT_NON_STD K_ConfigMT_FMMMU
#define C0_CONFIG_K0_SHF S_ConfigK0
#define C0_CONFIG_K0_MSK M_ConfigK0
#define C0_CONFIG_K0_WTHRU_NOALLOC K_CacheAttrCWTnWA
#define C0_CONFIG_K0_WTHRU_ALLOC K_CacheAttrCWTWA
#define C0_CONFIG_K0_UNCACHED K_CacheAttrU
#define C0_CONFIG_K0_NONCOHERENT K_CacheAttrCN
#define C0_CONFIG_K0_COHERENTXCL K_CacheAttrCCE
#define C0_CONFIG_K0_COHERENTXCLW K_CacheAttrCCS
#define C0_CONFIG_K0_COHERENTUPD K_CacheAttrCCU
#define C0_CONFIG_K0_UNCACHED_ACCEL K_CacheAttrUA
/* WC field.
*
* This feature is present specifically to support configuration
* testing of the core in a lead vehicle, and is not supported
* in any other environment. Attempting to use this feature
* outside of the scope of a lead vehicle is a violation of the
* MIPS Architecture, and may cause unpredictable operation of
* the processor.
*/
#define C0_CONFIG_WC_SHF 19
#define C0_CONFIG_WC_MSK (MSK(1) << C0_CONFIG_WC_SHF)
#define C0_CONFIG_WC_BIT C0_CONFIG_WC_MSK
/* C0_CONFIG1 register encoding */
#define C0_CONFIG1_MMUSIZE_SHF S_Config1MMUSize
#define C0_CONFIG1_MMUSIZE_MSK M_Config1MMUSize
#define C0_CONFIG1_IS_SHF S_Config1IS
#define C0_CONFIG1_IS_MSK M_Config1IS
#define C0_CONFIG1_IL_SHF S_Config1IL
#define C0_CONFIG1_IL_MSK M_Config1IL
#define C0_CONFIG1_IA_SHF S_Config1IA
#define C0_CONFIG1_IA_MSK M_Config1IA
#define C0_CONFIG1_DS_SHF S_Config1DS
#define C0_CONFIG1_DS_MSK M_Config1DS
#define C0_CONFIG1_DL_SHF S_Config1DL
#define C0_CONFIG1_DL_MSK M_Config1DL
#define C0_CONFIG1_DA_SHF S_Config1DA
#define C0_CONFIG1_DA_MSK M_Config1DA
#define C0_CONFIG1_WR_SHF S_Config1WR
#define C0_CONFIG1_WR_MSK M_Config1WR
#define C0_CONFIG1_WR_BIT C0_CONFIG1_WR_MSK
#define C0_CONFIG1_CA_SHF S_Config1CA
#define C0_CONFIG1_CA_MSK M_Config1CA
#define C0_CONFIG1_CA_BIT C0_CONFIG1_CA_MSK
#define C0_CONFIG1_EP_SHF S_Config1EP
#define C0_CONFIG1_EP_MSK M_Config1EP
#define C0_CONFIG1_EP_BIT C0_CONFIG1_EP_MSK
#define C0_CONFIG1_FP_SHF S_Config1FP
#define C0_CONFIG1_FP_MSK M_Config1FP
#define C0_CONFIG1_FP_BIT C0_CONFIG1_FP_MSK
/* C0_STATUS register encoding */
#define C0_STATUS_CU3_SHF S_StatusCU3
#define C0_STATUS_CU3_MSK M_StatusCU3
#define C0_STATUS_CU3_BIT C0_STATUS_CU3_MSK
#define C0_STATUS_CU2_SHF S_StatusCU2
#define C0_STATUS_CU2_MSK M_StatusCU2
#define C0_STATUS_CU2_BIT C0_STATUS_CU2_MSK
#define C0_STATUS_CU1_SHF S_StatusCU1
#define C0_STATUS_CU1_MSK M_StatusCU1
#define C0_STATUS_CU1_BIT C0_STATUS_CU1_MSK
#define C0_STATUS_CU0_SHF S_StatusCU1
#define C0_STATUS_CU0_MSK M_StatusCU1
#define C0_STATUS_CU0_BIT C0_STATUS_CU0_MSK
#define C0_STATUS_RP_SHF S_StatusRP
#define C0_STATUS_RP_MSK M_StatusRP
#define C0_STATUS_RP_BIT C0_STATUS_RP_MSK
#define C0_STATUS_FR_SHF S_StatusFR
#define C0_STATUS_FR_MSK M_StatusFR
#define C0_STATUS_FR_BIT C0_STATUS_FR_MSK
#define C0_STATUS_RE_SHF S_StatusRE
#define C0_STATUS_RE_MSK M_StatusRE
#define C0_STATUS_RE_BIT C0_STATUS_RE_MSK
#define C0_STATUS_BEV_SHF S_StatusBEV
#define C0_STATUS_BEV_MSK M_StatusBEV
#define C0_STATUS_BEV_BIT C0_STATUS_BEV_MSK
#define C0_STATUS_TS_SHF S_StatusTS
#define C0_STATUS_TS_MSK M_StatusTS
#define C0_STATUS_TS_BIT C0_STATUS_TS_MSK
#define C0_STATUS_SR_SHF S_StatusSR
#define C0_STATUS_SR_MSK M_StatusSR
#define C0_STATUS_SR_BIT C0_STATUS_SR_MSK
#define C0_STATUS_NMI_SHF S_StatusNMI
#define C0_STATUS_NMI_MSK M_StatusNMI
#define C0_STATUS_NMI_BIT C0_STATUS_NMI_MSK
#define C0_STATUS_IM_SHF S_StatusIM
#define C0_STATUS_IM_MSK M_StatusIM
/* Note that the the definitions below indicate the interrupt number
* rather than the mask.
* (0..1 for SW interrupts and 2...7 for HW interrupts)
*/
#define C0_STATUS_IM_SW0 (S_StatusIM0 - S_StatusIM)
#define C0_STATUS_IM_SW1 (S_StatusIM1 - S_StatusIM)
#define C0_STATUS_IM_HW0 (S_StatusIM2 - S_StatusIM)
#define C0_STATUS_IM_HW1 (S_StatusIM3 - S_StatusIM)
#define C0_STATUS_IM_HW2 (S_StatusIM4 - S_StatusIM)
#define C0_STATUS_IM_HW3 (S_StatusIM5 - S_StatusIM)
#define C0_STATUS_IM_HW4 (S_StatusIM6 - S_StatusIM)
#define C0_STATUS_IM_HW5 (S_StatusIM7 - S_StatusIM)
/* Max interrupt code */
#define C0_STATUS_IM_MAX C0_STATUS_IM_HW5
#define C0_STATUS_KSU_SHF S_StatusKSU
#define C0_STATUS_KSU_MSK M_StatusKSU
#define C0_STATUS_UM_SHF S_StatusUM
#define C0_STATUS_UM_MSK M_StatusUM
#define C0_STATUS_UM_BIT C0_STATUS_UM_MSK
#define C0_STATUS_ERL_SHF S_StatusERL
#define C0_STATUS_ERL_MSK M_StatusERL
#define C0_STATUS_ERL_BIT C0_STATUS_ERL_MSK
#define C0_STATUS_EXL_SHF S_StatusEXL
#define C0_STATUS_EXL_MSK M_StatusEXL
#define C0_STATUS_EXL_BIT C0_STATUS_EXL_MSK
#define C0_STATUS_IE_SHF S_StatusIE
#define C0_STATUS_IE_MSK M_StatusIE
#define C0_STATUS_IE_BIT C0_STATUS_IE_MSK
/* C0_PRID register encoding */
#define C0_PRID_OPT_SHF S_PRIdCoOpt
#define C0_PRID_OPT_MSK M_PRIdCoOpt
#define C0_PRID_COMP_SHF S_PRIdCoID
#define C0_PRID_COMP_MSK M_PRIdCoID
#define C0_PRID_COMP_MIPS K_PRIdCoID_MIPS
#define C0_PRID_COMP_NOT_MIPS32_64 0
#define C0_PRID_PRID_SHF S_PRIdImp
#define C0_PRID_PRID_MSK M_PRIdImp
/* Jade */
#define C0_PRID_PRID_4Kc K_PRIdImp_Jade
#define C0_PRID_PRID_4Kmp K_PRIdImp_JadeLite /* 4Km/4Kp */
/* Emerald */
#define C0_PRID_PRID_4KEc K_PRIdImp_4KEc
#define C0_PRID_PRID_4KEmp K_PRIdImp_4KEmp
/* Coral */
#define C0_PRID_PRID_4KSc K_PRIdImp_4KSc
/* Opal */
#define C0_PRID_PRID_5K K_PRIdImp_Opal
/* Ruby */
#define C0_PRID_PRID_20Kc K_PRIdImp_Ruby
/* Other CPUs */
#define C0_PRID_PRID_R4000 K_PRIdImp_R4000
#define C0_PRID_PRID_RM52XX K_PRIdImp_R5200
#define C0_PRID_PRID_RM70XX 0x27
#define C0_PRID_REV_SHF S_PRIdRev
#define C0_PRID_REV_MSK M_PRIdRev
#define MIPS_4Kc ( (C0_PRID_COMP_MIPS << \
C0_PRID_COMP_SHF) | \
(C0_PRID_PRID_4Kc << \
C0_PRID_PRID_SHF) \
)
#define MIPS_4Kmp ( (C0_PRID_COMP_MIPS << \
C0_PRID_COMP_SHF) | \
(C0_PRID_PRID_4Kmp << \
C0_PRID_PRID_SHF) \
)
#define MIPS_4KEc ( (C0_PRID_COMP_MIPS << \
C0_PRID_COMP_SHF) | \
(C0_PRID_PRID_4KEc << \
C0_PRID_PRID_SHF) \
)
#define MIPS_4KEmp ( (C0_PRID_COMP_MIPS << \
C0_PRID_COMP_SHF) | \
(C0_PRID_PRID_4KEmp << \
C0_PRID_PRID_SHF) \
)
#define MIPS_4KSc ( (C0_PRID_COMP_MIPS << \
C0_PRID_COMP_SHF) | \
(C0_PRID_PRID_4KSc << \
C0_PRID_PRID_SHF) \
)
#define MIPS_5K ( (C0_PRID_COMP_MIPS << \
C0_PRID_COMP_SHF) | \
(C0_PRID_PRID_5K << \
C0_PRID_PRID_SHF) \
)
#define MIPS_20Kc ( (C0_PRID_COMP_MIPS << \
C0_PRID_COMP_SHF) | \
(C0_PRID_PRID_20Kc << \
C0_PRID_PRID_SHF) \
)
#define QED_RM52XX ( (C0_PRID_COMP_NOT_MIPS32_64 << \
C0_PRID_COMP_SHF) | \
(C0_PRID_PRID_RM52XX << \
C0_PRID_PRID_SHF) \
)
#define QED_RM70XX ( (C0_PRID_COMP_NOT_MIPS32_64 << \
C0_PRID_COMP_SHF) | \
(C0_PRID_PRID_RM70XX << \
C0_PRID_PRID_SHF) \
)
/* C0_ENTRYHI register encoding */
#define C0_ENTRYHI_VPN2_SHF S_EntryHiVPN2
#define C0_ENTRYHI_VPN2_MSK M_EntryHiVPN2
#define C0_ENTRYHI_ASID_SHF S_EntryHiASID
#define C0_ENTRYHI_ASID_MSK M_EntryHiASID
/* C0_CAUSE register encoding */
#define C0_CAUSE_BD_SHF S_CauseBD
#define C0_CAUSE_BD_MSK M_CauseBD
#define C0_CAUSE_BD_BIT C0_CAUSE_BD_MSK
#define C0_CAUSE_CE_SHF S_CauseCE
#define C0_CAUSE_CE_MSK M_CauseCE
#define C0_CAUSE_IV_SHF S_CauseIV
#define C0_CAUSE_IV_MSK M_CauseIV
#define C0_CAUSE_IV_BIT C0_CAUSE_IV_MSK
#define C0_CAUSE_WP_SHF S_CauseWP
#define C0_CAUSE_WP_MSK M_CauseWP
#define C0_CAUSE_WP_BIT C0_CAUSE_WP_MSK
#define C0_CAUSE_IP_SHF S_CauseIP
#define C0_CAUSE_IP_MSK M_CauseIP
#define C0_CAUSE_CODE_SHF S_CauseExcCode
#define C0_CAUSE_CODE_MSK M_CauseExcCode
#define C0_CAUSE_CODE_INT EX_INT
#define C0_CAUSE_CODE_MOD EX_MOD
#define C0_CAUSE_CODE_TLBL EX_TLBL
#define C0_CAUSE_CODE_TLBS EX_TLBS
#define C0_CAUSE_CODE_ADEL EX_ADEL
#define C0_CAUSE_CODE_ADES EX_ADES
#define C0_CAUSE_CODE_IBE EX_IBE
#define C0_CAUSE_CODE_DBE EX_DBE
#define C0_CAUSE_CODE_SYS EX_SYS
#define C0_CAUSE_CODE_BP EX_BP
#define C0_CAUSE_CODE_RI EX_RI
#define C0_CAUSE_CODE_CPU EX_CPU
#define C0_CAUSE_CODE_OV EX_OV
#define C0_CAUSE_CODE_TR EV_TR
#define C0_CAUSE_CODE_FPE EX_FPE
#define C0_CAUSE_CODE_WATCH EX_WATCH
#define C0_CAUSE_CODE_MCHECK EX_MCHECK
/* Max cause code */
#define C0_CAUSE_CODE_MAX EX_MCHECK
/* C0_PAGEMASK register encoding */
#define C0_PAGEMASK_MASK_SHF S_PageMaskMask
#define C0_PAGEMASK_MASK_MSK M_PageMaskMask
#define C0_PAGEMASK_MASK_4K K_PageMask4K
#define C0_PAGEMASK_MASK_16K K_PageMask16K
#define C0_PAGEMASK_MASK_64K K_PageMask64K
#define C0_PAGEMASK_MASK_256K K_PageMask256K
#define C0_PAGEMASK_MASK_1M K_PageMask1M
#define C0_PAGEMASK_MASK_4M K_PageMask4M
#define C0_PAGEMASK_MASK_16M K_PageMask16M
/* C0_ENTRYLO0 register encoding (equiv. to C0_ENTRYLO1) */
#define C0_ENTRYLO0_PFN_SHF S_EntryLoPFN
#define C0_ENTRYLO0_PFN_MSK M_EntryLoPFN
#define C0_ENTRYLO0_C_SHF S_EntryLoC
#define C0_ENTRYLO0_C_MSK M_EntryLoC
#define C0_ENTRYLO0_D_SHF S_EntryLoD
#define C0_ENTRYLO0_D_MSK M_EntryLoD
#define C0_ENTRYLO0_V_SHF S_EntryLoV
#define C0_ENTRYLO0_V_MSK M_EntryLoV
#define C0_ENTRYLO0_G_SHF S_EntryLoG
#define C0_ENTRYLO0_G_MSK M_EntryLoG
/* FPU (CP1) FIR register encoding */
#define C1_FIR_3D_SHF S_FIRConfig3D
#define C1_FIR_3D_MSK M_FIRConfig3D
#define C1_FIR_PS_SHF S_FIRConfigPS
#define C1_FIR_PS_MSK M_FIRConfigPS
#define C1_FIR_D_SHF S_FIRConfigD
#define C1_FIR_D_MSK M_FIRConfigD
#define C1_FIR_S_SHF S_FIRConfigS
#define C1_FIR_S_MSK M_FIRConfigS
#define C1_FIR_PRID_SHF S_FIRImp
#define C1_FIR_PRID_MSK M_FIRImp
#define C1_FIR_REV_SHF S_FIRRev
#define C1_FIR_REV_MSK M_FIRRev
/* FPU (CP1) FCSR control/status register */
#define C1_FCSR_FCC_SHF S_FCSRFCC7_1
#define C1_FCSR_FCC_MSK M_FCSRFCC7_1
#define C1_FCSR_FS_SHF S_FCSRFS
#define C1_FCSR_FS_MSK M_FCSRFS
#define C1_FCSR_FS_BIT C1_FCSR_FS_MSK
#define C1_FCSR_CC_SHF S_FCSRCC
#define C1_FCSR_CC_MSK M_FCSRCC
#define C1_FCSR_IMPL_SHF S_FCSRImpl
#define C1_FCSR_IMPL_MSK M_FCSRImpl
#define C1_FCSR_EXC_SHF S_FCSRExc
#define C1_FCSR_EXC_MSK M_FCSRExc
#define C1_FCSR_ENA_SHF S_FCSREna
#define C1_FCSR_ENA_MSK M_FCSREna
#define C1_FCSR_FLG_SHF S_FCSRFlg
#define C1_FCSR_FLG_MSK M_FCSRFlg
#define C1_FCSR_RM_SHF S_FCSRRM
#define C1_FCSR_RM_MSK M_FCSRRM
#define C1_FCSR_RM_RN K_FCSRRM_RN
#define C1_FCSR_RM_RZ K_FCSRRM_RZ
#define C1_FCSR_RM_RP K_FCSRRM_RP
#define C1_FCSR_RM_RM K_FCSRRM_RM
/* cache operations */
#define CACHE_OP( code, type ) ( ((code) << 2) | (type) )
#define ICACHE_INDEX_INVALIDATE CACHE_OP(0x0, 0)
#define ICACHE_INDEX_LOAD_TAG CACHE_OP(0x1, 0)
#define ICACHE_INDEX_STORE_TAG CACHE_OP(0x2, 0)
#define DCACHE_INDEX_WRITEBACK_INVALIDATE CACHE_OP(0x0, 1)
#define DCACHE_INDEX_LOAD_TAG CACHE_OP(0x1, 1)
#define DCACHE_INDEX_STORE_TAG CACHE_OP(0x2, 1)
#define SCACHE_INDEX_STORE_TAG CACHE_OP(0x2, 3)
#define ICACHE_ADDR_HIT_INVALIDATE CACHE_OP(0x4, 0)
#define ICACHE_ADDR_FILL CACHE_OP(0x5, 0)
#define ICACHE_ADDR_FETCH_LOCK CACHE_OP(0x7, 0)
#define DCACHE_ADDR_HIT_INVALIDATE CACHE_OP(0x4, 1)
#define DCACHE_ADDR_HIT_WRITEBACK_INVALIDATE CACHE_OP(0x5, 1)
#define DCACHE_ADDR_HIT_WRITEBACK CACHE_OP(0x6, 1)
#define DCACHE_ADDR_FETCH_LOCK CACHE_OP(0x7, 1)
#define SCACHE_ADDR_HIT_WRITEBACK_INVALIDATE CACHE_OP(0x5, 3)
/* Workaround for bug in early revisions of MIPS 4K family of
* processors. Only relevant in early engineering samples of test
* chips (RTL revision <= 3.0).
*
* The bug is described in :
*
* MIPS32 4K(tm) Processor Core Family RTL Errata Sheet
* MIPS Document No: MD00003
*
* The bug is identified as : C16
*/
#ifndef SET_MIPS0
#define SET_MIPS0()
#define SET_PUSH()
#define SET_POP()
#endif
#define ICACHE_INVALIDATE_WORKAROUND(reg) \
SET_PUSH(); \
SET_MIPS0(); \
la reg, 999f; \
SET_POP(); \
cache ICACHE_ADDR_FILL, 0(reg); \
sync; \
nop; nop; nop; nop; \
999:
/* EMPTY_PIPELINE is used for the below cache invalidation operations.
* When $I is invalidated, there will still be operations in the
* pipeline. We make sure these are 'nop' operations.
*/
#define EMPTY_PIPELINE nop; nop; nop; nop
#define ICACHE_INDEX_INVALIDATE_OP(index,scratch) \
ICACHE_INVALIDATE_WORKAROUND(scratch); \
cache ICACHE_INDEX_INVALIDATE, 0(index); \
EMPTY_PIPELINE
#define ICACHE_ADDR_INVALIDATE_OP(addr,scratch) \
ICACHE_INVALIDATE_WORKAROUND(scratch); \
cache ICACHE_ADDR_HIT_INVALIDATE, 0(addr); \
EMPTY_PIPELINE
/* The sync used in the below macro is there in case we are installing
* a new instruction (flush $D, sync, invalidate $I sequence).
*/
#define SCACHE_ADDR_HIT_WB_INVALIDATE_OP(reg) \
cache SCACHE_ADDR_HIT_WRITEBACK_INVALIDATE, 0(reg); \
sync; \
EMPTY_PIPELINE
/* Config1 cache field decoding */
#define CACHE_CALC_SPW(s) ( 64 << (s) )
#define CACHE_CALC_LS(l) ( (l) ? 2 << (l) : 0 )
#define CACHE_CALC_BPW(l,s) ( CACHE_CALC_LS(l) * CACHE_CALC_SPW(s) )
#define CACHE_CALC_ASSOC(a) ( (a) + 1 )
/**** Move from/to Coprocessor operations ****/
/* We use ssnop instead of nop operations in order to handle
* superscalar CPUs.
* The "sll zero,zero,1" notation is compiler backwards compatible.
*/
#define SSNOP sll zero,zero,1
#define NOPS SSNOP; SSNOP; SSNOP; SSNOP
#define MFLO(dst) \
mflo dst;\
NOPS
/* Workaround for bug in early revisions of MIPS 4K family of
* processors.
*
* This concerns the nop instruction before mtc0 in the
* MTC0 macro below.
*
* The bug is described in :
*
* MIPS32 4K(tm) Processor Core Family RTL Errata Sheet
* MIPS Document No: MD00003
*
* The bug is identified as : C27
*/
#define MTC0(src, dst) \
nop; \
mtc0 src,dst;\
NOPS
#define DMTC0(src, dst) \
nop; \
dmtc0 src,dst;\
NOPS
#define MFC0(dst, src) \
mfc0 dst,src;\
NOPS
#define DMFC0(dst, src) \
dmfc0 dst,src;\
NOPS
#define MFC0_SEL_OPCODE(dst, src, sel)\
.##word (0x40000000 | ((dst)<<16) | ((src)<<11) | (sel));\
NOPS
#define MTC0_SEL_OPCODE(dst, src, sel)\
.##word (0x40800000 | ((dst)<<16) | ((src)<<11) | (sel));\
NOPS
#define LDC1(dst, src, offs)\
.##word (0xd4000000 | ((src)<<21) | ((dst)<<16) | (offs))
#define SDC1(src, dst, offs)\
.##word (0xf4000000 | ((dst)<<21) | ((src)<<16) | (offs))
/* Instruction opcode fields */
#define OPC_SPECIAL 0x0
#define OPC_REGIM 0x1
#define OPC_J 0x2
#define OPC_JAL 0x3
#define OPC_BEQ 0x4
#define OPC_BNE 0x5
#define OPC_BLEZ 0x6
#define OPC_BGTZ 0x7
#define OPC_COP1 0x11
#define OPC_JALX 0x1D
#define OPC_BEQL 0x14
#define OPC_BNEL 0x15
#define OPC_BLEZL 0x16
#define OPC_BGTZL 0x17
/* Instruction function fields */
#define FUNC_JR 0x8
#define FUNC_JALR 0x9
/* Instruction rt fields */
#define RT_BLTZ 0x0
#define RT_BGEZ 0x1
#define RT_BLTZL 0x2
#define RT_BGEZL 0x3
#define RT_BLTZAL 0x10
#define RT_BGEZAL 0x11
#define RT_BLTZALL 0x12
#define RT_BGEZALL 0x13
/* Instruction rs fields */
#define RS_BC1 0x08
/* Access macros for instruction fields */
#define MIPS_OPCODE( instr) ((instr) >> 26)
#define MIPS_FUNCTION(instr) ((instr) & MSK(6))
#define MIPS_RT(instr) (((instr) >> 16) & MSK(5))
#define MIPS_RS(instr) (((instr) >> 21) & MSK(5))
#define MIPS_OFFSET(instr) ((instr) & 0xFFFF)
#define MIPS_TARGET(instr) ((instr) & MSK(26))
/* Instructions */
#define OPCODE_DERET 0x4200001f
#define OPCODE_BREAK 0x0005000d
#define OPCODE_NOP 0
#define OPCODE_JUMP(addr) ( (OPC_J << 26) | (((addr) >> 2) & 0x3FFFFFF) )
#define DERET .##word OPCODE_DERET
/* MIPS16e opcodes and instruction field access macros */
#define MIPS16E_OPCODE(inst) (((inst) >> 11) & 0x1f)
#define MIPS16E_I8_FUNCTION(inst) (((inst) >> 8) & 0x7)
#define MIPS16E_X(inst) (((inst) >> 26) & 0x1)
#define MIPS16E_RR_FUNCTION(inst) (((inst) >> 0) & 0x1f)
#define MIPS16E_RY(inst) (((inst) >> 5) & 0x3)
#define MIPS16E_OPC_EXTEND 0x1e
#define MIPS16E_OPC_JAL_X 0x03
#define MIPS16E_OPC_B 0x02
#define MIPS16E_OPC_BEQZ 0x04
#define MIPS16E_OPC_BNEZ 0x05
#define MIPS16E_OPC_I8 0x0c
#define MIPS16E_I8_FUNC_BTEQZ 0x00
#define MIPS16E_I8_FUNC_BTNEZ 0x01
#define MIPS16E_X_JALX 0x01
#define MIPS16E_OPC_RR 0x1d
#define MIPS16E_RR_FUNC_JALRC 0x00
#define MIPS16E_RR_RY_JRRX 0x00
#define MIPS16E_RR_RY_JRRA 0x01
#define MIPS16E_RR_RY_JALR 0x02
#define MIPS16E_RR_RY_JRCRX 0x04
#define MIPS16E_RR_RY_JRCRA 0x05
#define MIPS16E_RR_RY_JALRC 0x06
#define MIPS16E_OPCODE_BREAK 0xE805
#define MIPS16E_OPCODE_NOP 0x6500
/* MIPS reset vector */
#define MIPS_RESET_VECTOR 0x1fc00000
/* Clock periods per count register increment */
#define MIPS4K_COUNT_CLK_PER_CYCLE 2
#define MIPS5K_COUNT_CLK_PER_CYCLE 2
#define MIPS20Kc_COUNT_CLK_PER_CYCLE 1
/**** MIPS 4K/5K families specific fields of CONFIG register ****/
#define C0_CONFIG_MIPS4K5K_K23_SHF S_ConfigK23
#define C0_CONFIG_MIPS4K5K_K23_MSK (MSK(3) << C0_CONFIG_MIPS4K5K_K23_SHF)
#define C0_CONFIG_MIPS4K5K_KU_SHF S_ConfigKU
#define C0_CONFIG_MIPS4K5K_KU_MSK (MSK(3) << C0_CONFIG_MIPS4K5K_KU_SHF)
/**** MIPS 20Kc specific fields of CONFIG register ****/
#define C0_CONFIG_MIPS20KC_EC_SHF 28
#define C0_CONFIG_MIPS20KC_EC_MSK (MSK(3) << C0_CONFIG_MIPS20KC_EC_SHF)
#define C0_CONFIG_MIPS20KC_DD_SHF 27
#define C0_CONFIG_MIPS20KC_DD_MSK (MSK(1) << C0_CONFIG_MIPS20KC_DD_SHF)
#define C0_CONFIG_MIPS20KC_DD_BIT C0_CONFIG_MIPS20KC_DD_MSK
#define C0_CONFIG_MIPS20KC_LP_SHF 26
#define C0_CONFIG_MIPS20KC_LP_MSK (MSK(1) << C0_CONFIG_MIPS20KC_LP_SHF)
#define C0_CONFIG_MIPS20KC_LP_BIT C0_CONFIG_MIPS20KC_LP_MSK
#define C0_CONFIG_MIPS20KC_SP_SHF 25
#define C0_CONFIG_MIPS20KC_SP_MSK (MSK(1) << C0_CONFIG_MIPS20KC_SP_SHF)
#define C0_CONFIG_MIPS20KC_SP_BIT C0_CONFIG_MIPS20KC_SP_MSK
#define C0_CONFIG_MIPS20KC_TI_SHF 24
#define C0_CONFIG_MIPS20KC_TI_MSK (MSK(1) << C0_CONFIG_MIPS20KC_TI_SHF)
#define C0_CONFIG_MIPS20KC_TI_BIT C0_CONFIG_MIPS20KC_TI_MSK
/* ********************************************************************* */
/* Interface function definition */
/* ********************************************************************* */
#endif /* #ifndef __MIPS_H__ */
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