OSMisc

; Copyright 2015 Castle Technology Ltd
;
; Licensed under the Apache License, Version 2.0 (the "License");
; you may not use this file except in compliance with the License.
; You may obtain a copy of the License at
;
;     http://www.apache.org/licenses/LICENSE-2.0
;
; Unless required by applicable law or agreed to in writing, software
; distributed under the License is distributed on an "AS IS" BASIS,
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; See the License for the specific language governing permissions and
; limitations under the License.
;

; Miscellaneous public definitions that aren't important enough to pollute
; Hdr:RISCOS or to have their own header

; OS_PlatformFeatures reason codes

OSPlatformFeatures_ReadCodeFeatures     * 0
OSPlatformFeatures_ReadProcessorVectors * 32
OSPlatformFeatures_ReadCacheInfo        * 33
OSPlatformFeatures_ReadCPUFeatures      * 34

; These flags are returned by OS_PlatformFeatures 0 (Read code features)

CPUFlag_SynchroniseCodeAreas    * 1:SHL:0       ; Calls to OS_SynchroniseCodeAreas required
CPUFlag_InterruptDelay          * 1:SHL:1       ; Clearing then setting I bit immediately doesn't trigger IRQs
CPUFlag_VectorReadException     * 1:SHL:2       ; 26-bit reads of hardware vectors abort
CPUFlag_StorePCplus8            * 1:SHL:3       ; Stores of R15 store PC+8 rather than PC+12
CPUFlag_BaseRestored            * 1:SHL:4       ; Base Restored abort model rather than Base Updated
CPUFlag_SplitCache              * 1:SHL:5       ; CPU has separate I and D caches
CPUFlag_32bitOS                 * 1:SHL:6       ; OS is 32-bit
CPUFlag_No26bitMode             * 1:SHL:7       ; CPU does not support 26-bit modes
CPUFlag_LongMul                 * 1:SHL:8       ; Has M extensions (UMULL etc)
CPUFlag_Thumb                   * 1:SHL:9       ; Supports Thumb
CPUFlag_DSP                     * 1:SHL:10      ; Has E extensions (QADD etc)
CPUFlag_NoSWP                   * 1:SHL:11      ; CPU does not support SWP/SWPB
CPUFlag_LoadStoreEx             * 1:SHL:12      ; Has LDR/STREX
CPUFlag_LoadStoreClearExSizes   * 1:SHL:13      ; Has CLREX and LDR/STREX[B|H|D]
CPUFlag_ExtendedPages           * 1:SHL:15      ; Supports extended small page L2 descriptors
CPUFlag_NoWBDrain               * 1:SHL:16      ; CPU does not support Drain Write Buffer instruction
CPUFlag_AbortRestartBroken      * 1:SHL:17      ; Aborts do not correctly follow documented abort model
CPUFlag_XScale                  * 1:SHL:18      ; it's an XScale, so weird debug etc
CPUFlag_XScaleJTAGconnected     * 1:SHL:19      ; JTAG has been connected
CPUFlag_HiProcVecs              * 1:SHL:20      ; High processor vectors are in use
CPUFlag_ExtraReasonCodesFixed   * 1:SHL:31      ; Bug causing unknown reason codes to always raise an error has been fixed (bug affected 3.7X, 5.XX, and CallASWI)

; OS_PlatformFeatures 34 flags:

                                ^ 0
CPUFeature_AESE_AESD_AESMC_AESIMC # 1
CPUFeature_BFC_BFI_SBFX_UBFX # 1
CPUFeature_BKPT # 1
CPUFeature_BLX # 1
CPUFeature_BX # 1
CPUFeature_CLREX_LDREXB_LDREXH_STREXB_STREXH # 1
CPUFeature_CLZ # 1
CPUFeature_CRC32B_CRC32H_CRC32W_CRC32CB_CRC32CH_CRC32CW # 1
CPUFeature_DMB_DSB_ISB # 1
CPUFeature_ERET_MSR_MRS_banked # 1
CPUFeature_HVC # 1
CPUFeature_Interworking_MOV_pc # 1
CPUFeature_LDAx_STLx # 1 ; LDAB, LDAH, LDA, LDAEXB, LDAEXH, LDAEX, LDAEXD, STLB, STLH, STL, STLEXB, STLEXH, STLEX, STLEXD
CPUFeature_LDM_STM_continuable # 1
CPUFeature_LDM_STM_noninterruptible # 1
CPUFeature_LDM_STM_restartable # 1
CPUFeature_LDRD_STRD # 1
CPUFeature_LDREXD_STREXD # 1
CPUFeature_LDREX_STREX # 1
CPUFeature_LDRHT_LDRSBT_LDRSHT_STRHT # 1
CPUFeature_LDRH_LDRSH_STRH # 1
CPUFeature_LDRSB # 1
CPUFeature_LDR_STR_Rd_Rn_restriction # 1 ; LDR/STR with writeback and Rd == Rn is not allowed. Applies to all load/store single instructions.
CPUFeature_MLS # 1
CPUFeature_MOVW_MOVT # 1
CPUFeature_MRS_MSR # 1
CPUFeature_MUL_Rd_Rn_restriction # 1 ; MUL with Rd == Rn is not allowed. Applies to MUL, MLA, SMLAL, SMULL, UMLAL, UMULL
CPUFeature_MULS_flag_corruption # 1 ; MULS, MLAS corrupt C flag. SMLALS, SMULLS, UMLALS, UMULLS corrupt C & V flags.
CPUFeature_NOP_hints # 1
CPUFeature_PKHxy_xADD16_xADD8_xASX_xSUB16_xSUB8_xSAX_SEL # 1 ; PKHBT, PKHTB, QADD16, QADD8, QASX, QSUB16, QSUB8, QSAX, SADD16, SADD8, SASX, SEL, SHADD16, SHADD8, SHASX, SHSUB16, SHSUB8, SHSAX, SSAT16, SSUB16, SSUB8, SSAX, UADD16, UADD8, UASX, UHADD16, UADD8, UHASX, UHSUB16, UHSUB8, UHSAX, UQADD16, UQADD8, UQASX, UQSUB16, UQSUB8, UQSAX, USAD8, USADA8, USAT16, USUB16, USUB8, USAX
CPUFeature_PLD # 1
CPUFeature_PLDW # 1
CPUFeature_PLI # 1
CPUFeature_PSR_GE_bits # 1
CPUFeature_PSR_Q_bit # 1
CPUFeature_QADD_QDADD_QDSUB_QSUB # 1
CPUFeature_RBIT # 1
CPUFeature_REV_REV16_REVSH # 1
CPUFeature_SEVL # 1
CPUFeature_SHA1C_SHA1P_SHA1M_SHA1H_SHA1SU0_SHA1SU1 # 1
CPUFeature_SHA256H_SHA256H2_SHA256SU0_SHA256SU1 # 1
CPUFeature_SMC # 1
CPUFeature_SMLAxy_SMLALxy_SMLAWy_SMULxy_SMULWy # 1 ; SMLABB, SMLABT, SMLALBB, SMLALBT, SMLALTB, SMLALTT, SMLATB, SMLATT, SMLAWB, SMLAWT, SMULBB, SMULBT, SMULTB, SMULTT, SMULWB, SMULWT
CPUFeature_SMLAlDx_SMLSlDx_SMMLAr_SMMLSr_SMMULr_SMUADx_SMUSDx # 1 ; SMLAD, SMLADX, SMLALD, SMLALDX, SMLSD, SMLSDX, SMLSLD, SMLSLDX, SMMLA, SMMLAR, SMMLS, SMMLSR, SMMUL, SMMULR, SMUAD, SMUADX, SMUSD, SMUSDX
CPUFeature_SMULL_SMLAL # 1
CPUFeature_SRS_RFE_CPS # 1
CPUFeature_SSAT_USAT # 1
CPUFeature_SWP_SWPB # 1
CPUFeature_SWP_SWPB_uniproc # 1
CPUFeature_SXTAB_SXTAH_UXTAB_UXTAH # 1
CPUFeature_SXTB16_SXTAB16_UXTB16_UXTAB16 # 1
CPUFeature_SXTB_SXTH_UXTB_UXTH # 1
CPUFeature_SYS_mode # 1
CPUFeature_TEQP # 1 ; TEQP, TSTP, CMPP, CMNP
CPUFeature_UDIV_SDIV # 1
CPUFeature_UMAAL # 1
CPUFeature_UMULL_UMLAL # 1
CPUFeature_WFE # 1
CPUFeature_Rotated_loads # 1 ; CPU supports old-style rotated load behaviour
CPUFeature_Unaligned_loads # 1 ; CPU supports new-style unaligned load/store behaviour
CPUFeature_Max # 0

; OS_MMUControl reason codes

                                ^ 0
MMUCReason_ModifyControl        # 1
MMUCReason_Flush                # 1
MMUCReason_GetARMop             # 1
MMUCReason_Unknown              # 0

; These are the ARMops exposed by OS_MMUControl 2

                                  ^ 0
ARMop_Cache_CleanInvalidateAll    # 1 ; 0
ARMop_Cache_CleanAll              # 1 ; 1
ARMop_Cache_InvalidateAll         # 1 ; 2
ARMop_Cache_RangeThreshold        # 1 ; 3
ARMop_TLB_InvalidateAll           # 1 ; 4
ARMop_TLB_InvalidateEntry         # 1 ; 5
ARMop_DSB_ReadWrite               # 1 ; 6
ARMop_IMB_Full                    # 1 ; 7
ARMop_IMB_Range                   # 1 ; 8
ARMop_IMB_List                    # 1 ; 9
ARMop_MMU_Changing                # 1 ; 10
ARMop_MMU_ChangingEntry           # 1 ; 11
ARMop_MMU_ChangingUncached        # 1 ; 12
ARMop_MMU_ChangingUncachedEntry   # 1 ; 13
ARMop_MMU_ChangingEntries         # 1 ; 14
ARMop_MMU_ChangingUncachedEntries # 1 ; 15
ARMop_DSB_Write                   # 1 ; 16
ARMop_DSB_Read                    # 1 ; 17
ARMop_DMB_ReadWrite               # 1 ; 18
ARMop_DMB_Write                   # 1 ; 19
ARMop_DMB_Read                    # 1 ; 20
ARMop_Cache_CleanInvalidateRange  # 1 ; 21
ARMop_Max                         # 0

; SeriousErrorV reason codes (R2)
                           ^ 0
SeriousErrorV_Collect      # 1 ; ABT mode, IRQ disabled (maybe FIQ disabled too), R0=reg dump, R1=(untranslated) error block
SeriousErrorV_Recover      # 1 ; SVC mode, IRQ disabled, R0=translated error block
SeriousErrorV_Report       # 1 ; SVC mode, IRQ enabled, R0=translated error block
SeriousErrorV_CustomReport # 1 ; SVC mode, IRQ enabled, R0=translated error, R1=flags, R3=callback function, R4=callback R0

SeriousErrorV_CustomReport_Annotated * 1 ; 1 => Produce annotated text dump
                                         ; 0 => Produce raw binary dump
; Have more flags to control which items are included in the annotated dump?

; Extended ROM footer entries
                                ^ 0
ExtROMFooter_BuildDate          # 1
ExtROMFooter_CompressedROMHints # 1
ExtROMFooter_DebugSymbols       # 1

        END