+++ /dev/null
-
-
- .data
-
-
-;@ MASK_EMUL MASK_MEM MASK_INDEX Jump Table
-;@ TRUE ? ? jumptable1 Mode 0 : M=1,X=1
-;@ FALSE TRUE TRUE jumptable1 Mode 0 : M=1,X=1
-;@ FALSE TRUE FALSE jumptable2 Mode 1 : M=1,X=0
-;@ FALSE FALSE TRUE jumptable4 Mode 3 : M=0,X=1
-;@ FALSE FALSE FALSE jumptable3 Mode 2 : M=0,X=0
-
-opcodetable_lookup_addr opcodetable_lookup
-opcodetable_lookup:
- .word jumptable3 ;@ 000
- .word jumptable4 ;@ 001
- .word jumptable2 ;@ 010
- .word jumptable1 ;@ 011
- .word jumptable1 ;@ 100
- .word jumptable1 ;@ 101
- .word jumptable1 ;@ 110
- .word jumptable1 ;@ 111
-
-get_opcode_table:
- ldr r0,opcodetable_lookup_addr
- and r1,reg_f,MASK_EMUL MASK_MEM MASK_INDEX
- ldr opcodes,[r0,r1,lsl#2]
- mov pc,lr
-
-
- reg_a .req r5
- reg_d_bank .req r5
- reg_d .req r5
- reg_p_bank .req r5
- reg_x .req r5
- reg_sp .req r5
- reg_y .req r5
- reg_f .req r5
- reg_pc .req r5
- cycles .req r5
- cpu_context .req r5
- opcodes .req r5
-
- .equ BRKtriggered
- .equ pc_base
-
-.equ STATUS_SHIFTER, 24
-.equ MASK_EMUL, (1<<(STATUS_SHIFTER-1))
-.equ MASK_SHIFTER_CARRY, (STATUS_SHIFTER+1)
-.equ MASK_CARRY, (1<<(STATUS_SHIFTER)) @ 0
-.equ MASK_ZERO, (2<<(STATUS_SHIFTER)) @ 1
-.equ MASK_IRQ, (4<<(STATUS_SHIFTER)) @ 2
-.equ MASK_DECIMAL, (8<<(STATUS_SHIFTER)) @ 3
-.equ MASK_INDEX, (16<<(STATUS_SHIFTER)) @ 4 @ 1
-.equ MASK_MEM, (32<<(STATUS_SHIFTER)) @ 5 @ 2
-.equ MASK_OVERFLOW, (64<<(STATUS_SHIFTER)) @ 6 @ 4
-.equ MASK_NEG, (128<<(STATUS_SHIFTER))@ 7 @ 8
-
-.macro prepare_c_call
- stmfd sp!,{r12}
-.endm
-
-.macro restore_c_call
- ldmfd sp!,{r12}
-.endm
-
-;@push16 - saves a 16bit value onto stack
-;@ r0 = address 0x0000HHLL
-;@ r1 = data 0x0000HHLL
-.macro push16
- prepare_c_call
- mov lr,pc
- ldr pc,[cpu_context,#writemem16] ;@ r0 = address r1=data
- restore_c_call
-.endm
-
-;@push16 - saves a 8bit value onto stack
-;@ r0 = address 0x0000HHLL
-;@ r1 = data 0x0000HHLL
-.macro push8
- prepare_c_call
- mov lr,pc
- ldr pc,[cpu_context,#writemem8] ;@ r0 = address r1=data
- restore_c_call
-.endm
-
-.macro mov_reg_sp_to_r0
- mov r0,reg_sp
-.endm
-
-.macro push16_s24 reg
- mov_reg_sp_to_r0
- mov r1,\reg>>24
- push16
-.endm
-
-.macro push16_s16 reg
- mov_reg_sp_to_r0
- mov r1,\reg>>16
- push16
-.endm
-
-.macro push16_s8 reg
- mov_reg_sp_to_r0
- mov r1,\reg>>8
- push16
-.endm
-
-.macro push16_s0 reg
- mov_reg_sp_to_r0
- mov r1,\reg>
- push16
-.endm
-
-.macro push8_s24 reg
- mov_reg_sp_to_r0
- mov r1,\reg>>24
- push8
-.endm
-
-.macro push8_s16 reg
- mov_reg_sp_to_r0
- mov r1,\reg>>16
- push8
-.endm
-
-.macro push8_s8 reg
- mov_reg_sp_to_r0
- mov r1,\reg>>8
- push8
-.endm
-
-.macro push8_s0 reg
- mov_reg_sp_to_r0
- mov r1,\reg>
- push8
-.endm
-
-.macro pushPC
- ldr r1,[cpu_context,#pc_base]
- sub r1,reg_pc,r1
- push16_s0
-.endm
-
-.macro getSnesFlags reg
- sub \reg,[cpu_context,#snes_flag_lookup]
- ldr \reg,[\reg,reg_f>>24]
-.endm
-
-
-.macro setIRQ
- ;@ IRQ flag has ben raised
-.endm
-
-;@ re-calculates reg_pc and pc_base
-;@ in: r0=new snes pc
-;@ out: r0=new arm pc
-.macro setPCbase
- prepare_c_call
- mov lr,pc
- ldr pc,[cpu_context,#rebase_pc]
- restore_c_call
- mov reg_pc,r0
-.endm
-
-.macro fetch cyc
- subs cycles,cycles,#\cyc
- ldrplb r0,[reg_pc],#1
- ldrpl pc,[opcodes,r0, lsl #2]
- bmi cpu_execute_end
-.endm
-
-
-cpu_execute:
- ;@ load cpu context
- ;@ check interupts
- ;@ run opcodes
-
-cpu_execute_end
- ;@ cycle count has expired
- ;@ This means that
- ;@ All cpu cycles requested have been used
- ;@ NMI interupt has occurred
- ;@ IRQ interupt has occurred
- ;@ Check which counter has expired
- ;@ if normal cycle count then exit cpu emulation
- ;@ this will only occur while NMI and IRQ ints are NOT pending
- ;@ if NMI cycle count then raise NMI interrupt
- ;@ then continue cpu emulation using IRQ cycle count (if any) otherwise use remaining cycle count
- ;@ which would already be adjusted to remove NMI cycles used.
- ;@ count between normal cycles and IRQ cycles.
- ;@ if IRQ cycle count then raise IRQ interrupt.
- ;@
- ;@ save cpu context
- ;@ exit
-
-
-
-
-jumptable1: .long Op00mod1
- .long Op01M1mod1
- .long Op02mod1
- .long Op03M1mod1
- .long Op04M1mod1
- .long Op05M1mod1
- .long Op06M1mod1
- .long Op07M1mod1
- .long Op08mod1
- .long Op09M1mod1
- .long Op0AM1mod1
- .long Op0Bmod1
- .long Op0CM1mod1
- .long Op0DM1mod1
- .long Op0EM1mod1
- .long Op0FM1mod1
- .long Op10mod1
- .long Op11M1mod1
- .long Op12M1mod1
- .long Op13M1mod1
- .long Op14M1mod1
- .long Op15M1mod1
- .long Op16M1mod1
- .long Op17M1mod1
- .long Op18mod1
- .long Op19M1mod1
- .long Op1AM1mod1
- .long Op1Bmod1
- .long Op1CM1mod1
- .long Op1DM1mod1
- .long Op1EM1mod1
- .long Op1FM1mod1
- .long Op20mod1
- .long Op21M1mod1
- .long Op22mod1
- .long Op23M1mod1
- .long Op24M1mod1
- .long Op25M1mod1
- .long Op26M1mod1
- .long Op27M1mod1
- .long Op28mod1
- .long Op29M1mod1
- .long Op2AM1mod1
- .long Op2Bmod1
- .long Op2CM1mod1
- .long Op2DM1mod1
- .long Op2EM1mod1
- .long Op2FM1mod1
- .long Op30mod1
- .long Op31M1mod1
- .long Op32M1mod1
- .long Op33M1mod1
- .long Op34M1mod1
- .long Op35M1mod1
- .long Op36M1mod1
- .long Op37M1mod1
- .long Op38mod1
- .long Op39M1mod1
- .long Op3AM1mod1
- .long Op3Bmod1
- .long Op3CM1mod1
- .long Op3DM1mod1
- .long Op3EM1mod1
- .long Op3FM1mod1
- .long Op40mod1
- .long Op41M1mod1
- .long Op42mod1
- .long Op43M1mod1
- .long Op44X1mod1
- .long Op45M1mod1
- .long Op46M1mod1
- .long Op47M1mod1
- .long Op48M1mod1
- .long Op49M1mod1
- .long Op4AM1mod1
- .long Op4Bmod1
- .long Op4Cmod1
- .long Op4DM1mod1
- .long Op4EM1mod1
- .long Op4FM1mod1
- .long Op50mod1
- .long Op51M1mod1
- .long Op52M1mod1
- .long Op53M1mod1
- .long Op54X1mod1
- .long Op55M1mod1
- .long Op56M1mod1
- .long Op57M1mod1
- .long Op58mod1
- .long Op59M1mod1
- .long Op5AX1mod1
- .long Op5Bmod1
- .long Op5Cmod1
- .long Op5DM1mod1
- .long Op5EM1mod1
- .long Op5FM1mod1
- .long Op60mod1
- .long Op61M1mod1
- .long Op62mod1
- .long Op63M1mod1
- .long Op64M1mod1
- .long Op65M1mod1
- .long Op66M1mod1
- .long Op67M1mod1
- .long Op68M1mod1
- .long Op69M1mod1
- .long Op6AM1mod1
- .long Op6Bmod1
- .long Op6Cmod1
- .long Op6DM1mod1
- .long Op6EM1mod1
- .long Op6FM1mod1
- .long Op70mod1
- .long Op71M1mod1
- .long Op72M1mod1
- .long Op73M1mod1
- .long Op74M1mod1
- .long Op75M1mod1
- .long Op76M1mod1
- .long Op77M1mod1
- .long Op78mod1
- .long Op79M1mod1
- .long Op7AX1mod1
- .long Op7Bmod1
- .long Op7Cmod1
- .long Op7DM1mod1
- .long Op7EM1mod1
- .long Op7FM1mod1
- .long Op80mod1
- .long Op81M1mod1
- .long Op82mod1
- .long Op83M1mod1
- .long Op84X1mod1
- .long Op85M1mod1
- .long Op86X1mod1
- .long Op87M1mod1
- .long Op88X1mod1
- .long Op89M1mod1
- .long Op8AM1mod1
- .long Op8Bmod1
- .long Op8CX1mod1
- .long Op8DM1mod1
- .long Op8EX1mod1
- .long Op8FM1mod1
- .long Op90mod1
- .long Op91M1mod1
- .long Op92M1mod1
- .long Op93M1mod1
- .long Op94X1mod1
- .long Op95M1mod1
- .long Op96X1mod1
- .long Op97M1mod1
- .long Op98M1mod1
- .long Op99M1mod1
- .long Op9Amod1
- .long Op9BX1mod1
- .long Op9CM1mod1
- .long Op9DM1mod1
- .long Op9EM1mod1
- .long Op9FM1mod1
- .long OpA0X1mod1
- .long OpA1M1mod1
- .long OpA2X1mod1
- .long OpA3M1mod1
- .long OpA4X1mod1
- .long OpA5M1mod1
- .long OpA6X1mod1
- .long OpA7M1mod1
- .long OpA8X1mod1
- .long OpA9M1mod1
- .long OpAAX1mod1
- .long OpABmod1
- .long OpACX1mod1
- .long OpADM1mod1
- .long OpAEX1mod1
- .long OpAFM1mod1
- .long OpB0mod1
- .long OpB1M1mod1
- .long OpB2M1mod1
- .long OpB3M1mod1
- .long OpB4X1mod1
- .long OpB5M1mod1
- .long OpB6X1mod1
- .long OpB7M1mod1
- .long OpB8mod1
- .long OpB9M1mod1
- .long OpBAX1mod1
- .long OpBBX1mod1
- .long OpBCX1mod1
- .long OpBDM1mod1
- .long OpBEX1mod1
- .long OpBFM1mod1
- .long OpC0X1mod1
- .long OpC1M1mod1
- .long OpC2mod1
- .long OpC3M1mod1
- .long OpC4X1mod1
- .long OpC5M1mod1
- .long OpC6M1mod1
- .long OpC7M1mod1
- .long OpC8X1mod1
- .long OpC9M1mod1
- .long OpCAX1mod1
- .long OpCBmod1
- .long OpCCX1mod1
- .long OpCDM1mod1
- .long OpCEM1mod1
- .long OpCFM1mod1
- .long OpD0mod1
- .long OpD1M1mod1
- .long OpD2M1mod1
- .long OpD3M1mod1
- .long OpD4mod1
- .long OpD5M1mod1
- .long OpD6M1mod1
- .long OpD7M1mod1
- .long OpD8mod1
- .long OpD9M1mod1
- .long OpDAX1mod1
- .long OpDBmod1
- .long OpDCmod1
- .long OpDDM1mod1
- .long OpDEM1mod1
- .long OpDFM1mod1
- .long OpE0X1mod1
- .long OpE1M1mod1
- .long OpE2mod1
- .long OpE3M1mod1
- .long OpE4X1mod1
- .long OpE5M1mod1
- .long OpE6M1mod1
- .long OpE7M1mod1
- .long OpE8X1mod1
- .long OpE9M1mod1
- .long OpEAmod1
- .long OpEBmod1
- .long OpECX1mod1
- .long OpEDM1mod1
- .long OpEEM1mod1
- .long OpEFM1mod1
- .long OpF0mod1
- .long OpF1M1mod1
- .long OpF2M1mod1
- .long OpF3M1mod1
- .long OpF4mod1
- .long OpF5M1mod1
- .long OpF6M1mod1
- .long OpF7M1mod1
- .long OpF8mod1
- .long OpF9M1mod1
- .long OpFAX1mod1
- .long OpFBmod1
- .long OpFCmod1
- .long OpFDM1mod1
- .long OpFEM1mod1
- .long OpFFM1mod1
-
-
-jumptable2: .long Op00mod2
- .long Op01M1mod2
- .long Op02mod2
- .long Op03M1mod2
- .long Op04M1mod2
- .long Op05M1mod2
- .long Op06M1mod2
- .long Op07M1mod2
- .long Op08mod2
- .long Op09M1mod2
- .long Op0AM1mod2
- .long Op0Bmod2
- .long Op0CM1mod2
- .long Op0DM1mod2
- .long Op0EM1mod2
- .long Op0FM1mod2
- .long Op10mod2
- .long Op11M1mod2
- .long Op12M1mod2
- .long Op13M1mod2
- .long Op14M1mod2
- .long Op15M1mod2
- .long Op16M1mod2
- .long Op17M1mod2
- .long Op18mod2
- .long Op19M1mod2
- .long Op1AM1mod2
- .long Op1Bmod2
- .long Op1CM1mod2
- .long Op1DM1mod2
- .long Op1EM1mod2
- .long Op1FM1mod2
- .long Op20mod2
- .long Op21M1mod2
- .long Op22mod2
- .long Op23M1mod2
- .long Op24M1mod2
- .long Op25M1mod2
- .long Op26M1mod2
- .long Op27M1mod2
- .long Op28mod2
- .long Op29M1mod2
- .long Op2AM1mod2
- .long Op2Bmod2
- .long Op2CM1mod2
- .long Op2DM1mod2
- .long Op2EM1mod2
- .long Op2FM1mod2
- .long Op30mod2
- .long Op31M1mod2
- .long Op32M1mod2
- .long Op33M1mod2
- .long Op34M1mod2
- .long Op35M1mod2
- .long Op36M1mod2
- .long Op37M1mod2
- .long Op38mod2
- .long Op39M1mod2
- .long Op3AM1mod2
- .long Op3Bmod2
- .long Op3CM1mod2
- .long Op3DM1mod2
- .long Op3EM1mod2
- .long Op3FM1mod2
- .long Op40mod2
- .long Op41M1mod2
- .long Op42mod2
- .long Op43M1mod2
- .long Op44X0mod2
- .long Op45M1mod2
- .long Op46M1mod2
- .long Op47M1mod2
- .long Op48M1mod2
- .long Op49M1mod2
- .long Op4AM1mod2
- .long Op4Bmod2
- .long Op4Cmod2
- .long Op4DM1mod2
- .long Op4EM1mod2
- .long Op4FM1mod2
- .long Op50mod2
- .long Op51M1mod2
- .long Op52M1mod2
- .long Op53M1mod2
- .long Op54X0mod2
- .long Op55M1mod2
- .long Op56M1mod2
- .long Op57M1mod2
- .long Op58mod2
- .long Op59M1mod2
- .long Op5AX0mod2
- .long Op5Bmod2
- .long Op5Cmod2
- .long Op5DM1mod2
- .long Op5EM1mod2
- .long Op5FM1mod2
- .long Op60mod2
- .long Op61M1mod2
- .long Op62mod2
- .long Op63M1mod2
- .long Op64M1mod2
- .long Op65M1mod2
- .long Op66M1mod2
- .long Op67M1mod2
- .long Op68M1mod2
- .long Op69M1mod2
- .long Op6AM1mod2
- .long Op6Bmod2
- .long Op6Cmod2
- .long Op6DM1mod2
- .long Op6EM1mod2
- .long Op6FM1mod2
- .long Op70mod2
- .long Op71M1mod2
- .long Op72M1mod2
- .long Op73M1mod2
- .long Op74M1mod2
- .long Op75M1mod2
- .long Op76M1mod2
- .long Op77M1mod2
- .long Op78mod2
- .long Op79M1mod2
- .long Op7AX0mod2
- .long Op7Bmod2
- .long Op7Cmod2
- .long Op7DM1mod2
- .long Op7EM1mod2
- .long Op7FM1mod2
- .long Op80mod2
- .long Op81M1mod2
- .long Op82mod2
- .long Op83M1mod2
- .long Op84X0mod2
- .long Op85M1mod2
- .long Op86X0mod2
- .long Op87M1mod2
- .long Op88X0mod2
- .long Op89M1mod2
- .long Op8AM1mod2
- .long Op8Bmod2
- .long Op8CX0mod2
- .long Op8DM1mod2
- .long Op8EX0mod2
- .long Op8FM1mod2
- .long Op90mod2
- .long Op91M1mod2
- .long Op92M1mod2
- .long Op93M1mod2
- .long Op94X0mod2
- .long Op95M1mod2
- .long Op96X0mod2
- .long Op97M1mod2
- .long Op98M1mod2
- .long Op99M1mod2
- .long Op9Amod2
- .long Op9BX0mod2
- .long Op9CM1mod2
- .long Op9DM1mod2
- .long Op9EM1mod2
- .long Op9FM1mod2
- .long OpA0X0mod2
- .long OpA1M1mod2
- .long OpA2X0mod2
- .long OpA3M1mod2
- .long OpA4X0mod2
- .long OpA5M1mod2
- .long OpA6X0mod2
- .long OpA7M1mod2
- .long OpA8X0mod2
- .long OpA9M1mod2
- .long OpAAX0mod2
- .long OpABmod2
- .long OpACX0mod2
- .long OpADM1mod2
- .long OpAEX0mod2
- .long OpAFM1mod2
- .long OpB0mod2
- .long OpB1M1mod2
- .long OpB2M1mod2
- .long OpB3M1mod2
- .long OpB4X0mod2
- .long OpB5M1mod2
- .long OpB6X0mod2
- .long OpB7M1mod2
- .long OpB8mod2
- .long OpB9M1mod2
- .long OpBAX0mod2
- .long OpBBX0mod2
- .long OpBCX0mod2
- .long OpBDM1mod2
- .long OpBEX0mod2
- .long OpBFM1mod2
- .long OpC0X0mod2
- .long OpC1M1mod2
- .long OpC2mod2
- .long OpC3M1mod2
- .long OpC4X0mod2
- .long OpC5M1mod2
- .long OpC6M1mod2
- .long OpC7M1mod2
- .long OpC8X0mod2
- .long OpC9M1mod2
- .long OpCAX0mod2
- .long OpCBmod2
- .long OpCCX0mod2
- .long OpCDM1mod2
- .long OpCEM1mod2
- .long OpCFM1mod2
- .long OpD0mod2
- .long OpD1M1mod2
- .long OpD2M1mod2
- .long OpD3M1mod2
- .long OpD4mod2
- .long OpD5M1mod2
- .long OpD6M1mod2
- .long OpD7M1mod2
- .long OpD8mod2
- .long OpD9M1mod2
- .long OpDAX0mod2
- .long OpDBmod2
- .long OpDCmod2
- .long OpDDM1mod2
- .long OpDEM1mod2
- .long OpDFM1mod2
- .long OpE0X0mod2
- .long OpE1M1mod2
- .long OpE2mod2
- .long OpE3M1mod2
- .long OpE4X0mod2
- .long OpE5M1mod2
- .long OpE6M1mod2
- .long OpE7M1mod2
- .long OpE8X0mod2
- .long OpE9M1mod2
- .long OpEAmod2
- .long OpEBmod2
- .long OpECX0mod2
- .long OpEDM1mod2
- .long OpEEM1mod2
- .long OpEFM1mod2
- .long OpF0mod2
- .long OpF1M1mod2
- .long OpF2M1mod2
- .long OpF3M1mod2
- .long OpF4mod2
- .long OpF5M1mod2
- .long OpF6M1mod2
- .long OpF7M1mod2
- .long OpF8mod2
- .long OpF9M1mod2
- .long OpFAX0mod2
- .long OpFBmod2
- .long OpFCmod2
- .long OpFDM1mod2
- .long OpFEM1mod2
- .long OpFFM1mod2
-
-jumptable3: .long Op00mod3
- .long Op01M0mod3
- .long Op02mod3
- .long Op03M0mod3
- .long Op04M0mod3
- .long Op05M0mod3
- .long Op06M0mod3
- .long Op07M0mod3
- .long Op08mod3
- .long Op09M0mod3
- .long Op0AM0mod3
- .long Op0Bmod3
- .long Op0CM0mod3
- .long Op0DM0mod3
- .long Op0EM0mod3
- .long Op0FM0mod3
- .long Op10mod3
- .long Op11M0mod3
- .long Op12M0mod3
- .long Op13M0mod3
- .long Op14M0mod3
- .long Op15M0mod3
- .long Op16M0mod3
- .long Op17M0mod3
- .long Op18mod3
- .long Op19M0mod3
- .long Op1AM0mod3
- .long Op1Bmod3
- .long Op1CM0mod3
- .long Op1DM0mod3
- .long Op1EM0mod3
- .long Op1FM0mod3
- .long Op20mod3
- .long Op21M0mod3
- .long Op22mod3
- .long Op23M0mod3
- .long Op24M0mod3
- .long Op25M0mod3
- .long Op26M0mod3
- .long Op27M0mod3
- .long Op28mod3
- .long Op29M0mod3
- .long Op2AM0mod3
- .long Op2Bmod3
- .long Op2CM0mod3
- .long Op2DM0mod3
- .long Op2EM0mod3
- .long Op2FM0mod3
- .long Op30mod3
- .long Op31M0mod3
- .long Op32M0mod3
- .long Op33M0mod3
- .long Op34M0mod3
- .long Op35M0mod3
- .long Op36M0mod3
- .long Op37M0mod3
- .long Op38mod3
- .long Op39M0mod3
- .long Op3AM0mod3
- .long Op3Bmod3
- .long Op3CM0mod3
- .long Op3DM0mod3
- .long Op3EM0mod3
- .long Op3FM0mod3
- .long Op40mod3
- .long Op41M0mod3
- .long Op42mod3
- .long Op43M0mod3
- .long Op44X0mod3
- .long Op45M0mod3
- .long Op46M0mod3
- .long Op47M0mod3
- .long Op48M0mod3
- .long Op49M0mod3
- .long Op4AM0mod3
- .long Op4Bmod3
- .long Op4Cmod3
- .long Op4DM0mod3
- .long Op4EM0mod3
- .long Op4FM0mod3
- .long Op50mod3
- .long Op51M0mod3
- .long Op52M0mod3
- .long Op53M0mod3
- .long Op54X0mod3
- .long Op55M0mod3
- .long Op56M0mod3
- .long Op57M0mod3
- .long Op58mod3
- .long Op59M0mod3
- .long Op5AX0mod3
- .long Op5Bmod3
- .long Op5Cmod3
- .long Op5DM0mod3
- .long Op5EM0mod3
- .long Op5FM0mod3
- .long Op60mod3
- .long Op61M0mod3
- .long Op62mod3
- .long Op63M0mod3
- .long Op64M0mod3
- .long Op65M0mod3
- .long Op66M0mod3
- .long Op67M0mod3
- .long Op68M0mod3
- .long Op69M0mod3
- .long Op6AM0mod3
- .long Op6Bmod3
- .long Op6Cmod3
- .long Op6DM0mod3
- .long Op6EM0mod3
- .long Op6FM0mod3
- .long Op70mod3
- .long Op71M0mod3
- .long Op72M0mod3
- .long Op73M0mod3
- .long Op74M0mod3
- .long Op75M0mod3
- .long Op76M0mod3
- .long Op77M0mod3
- .long Op78mod3
- .long Op79M0mod3
- .long Op7AX0mod3
- .long Op7Bmod3
- .long Op7Cmod3
- .long Op7DM0mod3
- .long Op7EM0mod3
- .long Op7FM0mod3
- .long Op80mod3
- .long Op81M0mod3
- .long Op82mod3
- .long Op83M0mod3
- .long Op84X0mod3
- .long Op85M0mod3
- .long Op86X0mod3
- .long Op87M0mod3
- .long Op88X0mod3
- .long Op89M0mod3
- .long Op8AM0mod3
- .long Op8Bmod3
- .long Op8CX0mod3
- .long Op8DM0mod3
- .long Op8EX0mod3
- .long Op8FM0mod3
- .long Op90mod3
- .long Op91M0mod3
- .long Op92M0mod3
- .long Op93M0mod3
- .long Op94X0mod3
- .long Op95M0mod3
- .long Op96X0mod3
- .long Op97M0mod3
- .long Op98M0mod3
- .long Op99M0mod3
- .long Op9Amod3
- .long Op9BX0mod3
- .long Op9CM0mod3
- .long Op9DM0mod3
- .long Op9EM0mod3
- .long Op9FM0mod3
- .long OpA0X0mod3
- .long OpA1M0mod3
- .long OpA2X0mod3
- .long OpA3M0mod3
- .long OpA4X0mod3
- .long OpA5M0mod3
- .long OpA6X0mod3
- .long OpA7M0mod3
- .long OpA8X0mod3
- .long OpA9M0mod3
- .long OpAAX0mod3
- .long OpABmod3
- .long OpACX0mod3
- .long OpADM0mod3
- .long OpAEX0mod3
- .long OpAFM0mod3
- .long OpB0mod3
- .long OpB1M0mod3
- .long OpB2M0mod3
- .long OpB3M0mod3
- .long OpB4X0mod3
- .long OpB5M0mod3
- .long OpB6X0mod3
- .long OpB7M0mod3
- .long OpB8mod3
- .long OpB9M0mod3
- .long OpBAX0mod3
- .long OpBBX0mod3
- .long OpBCX0mod3
- .long OpBDM0mod3
- .long OpBEX0mod3
- .long OpBFM0mod3
- .long OpC0X0mod3
- .long OpC1M0mod3
- .long OpC2mod3
- .long OpC3M0mod3
- .long OpC4X0mod3
- .long OpC5M0mod3
- .long OpC6M0mod3
- .long OpC7M0mod3
- .long OpC8X0mod3
- .long OpC9M0mod3
- .long OpCAX0mod3
- .long OpCBmod3
- .long OpCCX0mod3
- .long OpCDM0mod3
- .long OpCEM0mod3
- .long OpCFM0mod3
- .long OpD0mod3
- .long OpD1M0mod3
- .long OpD2M0mod3
- .long OpD3M0mod3
- .long OpD4mod3
- .long OpD5M0mod3
- .long OpD6M0mod3
- .long OpD7M0mod3
- .long OpD8mod3
- .long OpD9M0mod3
- .long OpDAX0mod3
- .long OpDBmod3
- .long OpDCmod3
- .long OpDDM0mod3
- .long OpDEM0mod3
- .long OpDFM0mod3
- .long OpE0X0mod3
- .long OpE1M0mod3
- .long OpE2mod3
- .long OpE3M0mod3
- .long OpE4X0mod3
- .long OpE5M0mod3
- .long OpE6M0mod3
- .long OpE7M0mod3
- .long OpE8X0mod3
- .long OpE9M0mod3
- .long OpEAmod3
- .long OpEBmod3
- .long OpECX0mod3
- .long OpEDM0mod3
- .long OpEEM0mod3
- .long OpEFM0mod3
- .long OpF0mod3
- .long OpF1M0mod3
- .long OpF2M0mod3
- .long OpF3M0mod3
- .long OpF4mod3
- .long OpF5M0mod3
- .long OpF6M0mod3
- .long OpF7M0mod3
- .long OpF8mod3
- .long OpF9M0mod3
- .long OpFAX0mod3
- .long OpFBmod3
- .long OpFCmod3
- .long OpFDM0mod3
- .long OpFEM0mod3
- .long OpFFM0mod3
-
-jumptable4: .long Op00mod4
- .long Op01M0mod4
- .long Op02mod4
- .long Op03M0mod4
- .long Op04M0mod4
- .long Op05M0mod4
- .long Op06M0mod4
- .long Op07M0mod4
- .long Op08mod4
- .long Op09M0mod4
- .long Op0AM0mod4
- .long Op0Bmod4
- .long Op0CM0mod4
- .long Op0DM0mod4
- .long Op0EM0mod4
- .long Op0FM0mod4
- .long Op10mod4
- .long Op11M0mod4
- .long Op12M0mod4
- .long Op13M0mod4
- .long Op14M0mod4
- .long Op15M0mod4
- .long Op16M0mod4
- .long Op17M0mod4
- .long Op18mod4
- .long Op19M0mod4
- .long Op1AM0mod4
- .long Op1Bmod4
- .long Op1CM0mod4
- .long Op1DM0mod4
- .long Op1EM0mod4
- .long Op1FM0mod4
- .long Op20mod4
- .long Op21M0mod4
- .long Op22mod4
- .long Op23M0mod4
- .long Op24M0mod4
- .long Op25M0mod4
- .long Op26M0mod4
- .long Op27M0mod4
- .long Op28mod4
- .long Op29M0mod4
- .long Op2AM0mod4
- .long Op2Bmod4
- .long Op2CM0mod4
- .long Op2DM0mod4
- .long Op2EM0mod4
- .long Op2FM0mod4
- .long Op30mod4
- .long Op31M0mod4
- .long Op32M0mod4
- .long Op33M0mod4
- .long Op34M0mod4
- .long Op35M0mod4
- .long Op36M0mod4
- .long Op37M0mod4
- .long Op38mod4
- .long Op39M0mod4
- .long Op3AM0mod4
- .long Op3Bmod4
- .long Op3CM0mod4
- .long Op3DM0mod4
- .long Op3EM0mod4
- .long Op3FM0mod4
- .long Op40mod4
- .long Op41M0mod4
- .long Op42mod4
- .long Op43M0mod4
- .long Op44X1mod4
- .long Op45M0mod4
- .long Op46M0mod4
- .long Op47M0mod4
- .long Op48M0mod4
- .long Op49M0mod4
- .long Op4AM0mod4
- .long Op4Bmod4
- .long Op4Cmod4
- .long Op4DM0mod4
- .long Op4EM0mod4
- .long Op4FM0mod4
- .long Op50mod4
- .long Op51M0mod4
- .long Op52M0mod4
- .long Op53M0mod4
- .long Op54X1mod4
- .long Op55M0mod4
- .long Op56M0mod4
- .long Op57M0mod4
- .long Op58mod4
- .long Op59M0mod4
- .long Op5AX1mod4
- .long Op5Bmod4
- .long Op5Cmod4
- .long Op5DM0mod4
- .long Op5EM0mod4
- .long Op5FM0mod4
- .long Op60mod4
- .long Op61M0mod4
- .long Op62mod4
- .long Op63M0mod4
- .long Op64M0mod4
- .long Op65M0mod4
- .long Op66M0mod4
- .long Op67M0mod4
- .long Op68M0mod4
- .long Op69M0mod4
- .long Op6AM0mod4
- .long Op6Bmod4
- .long Op6Cmod4
- .long Op6DM0mod4
- .long Op6EM0mod4
- .long Op6FM0mod4
- .long Op70mod4
- .long Op71M0mod4
- .long Op72M0mod4
- .long Op73M0mod4
- .long Op74M0mod4
- .long Op75M0mod4
- .long Op76M0mod4
- .long Op77M0mod4
- .long Op78mod4
- .long Op79M0mod4
- .long Op7AX1mod4
- .long Op7Bmod4
- .long Op7Cmod4
- .long Op7DM0mod4
- .long Op7EM0mod4
- .long Op7FM0mod4
- .long Op80mod4
- .long Op81M0mod4
- .long Op82mod4
- .long Op83M0mod4
- .long Op84X1mod4
- .long Op85M0mod4
- .long Op86X1mod4
- .long Op87M0mod4
- .long Op88X1mod4
- .long Op89M0mod4
- .long Op8AM0mod4
- .long Op8Bmod4
- .long Op8CX1mod4
- .long Op8DM0mod4
- .long Op8EX1mod4
- .long Op8FM0mod4
- .long Op90mod4
- .long Op91M0mod4
- .long Op92M0mod4
- .long Op93M0mod4
- .long Op94X1mod4
- .long Op95M0mod4
- .long Op96X1mod4
- .long Op97M0mod4
- .long Op98M0mod4
- .long Op99M0mod4
- .long Op9Amod4
- .long Op9BX1mod4
- .long Op9CM0mod4
- .long Op9DM0mod4
- .long Op9EM0mod4
- .long Op9FM0mod4
- .long OpA0X1mod4
- .long OpA1M0mod4
- .long OpA2X1mod4
- .long OpA3M0mod4
- .long OpA4X1mod4
- .long OpA5M0mod4
- .long OpA6X1mod4
- .long OpA7M0mod4
- .long OpA8X1mod4
- .long OpA9M0mod4
- .long OpAAX1mod4
- .long OpABmod4
- .long OpACX1mod4
- .long OpADM0mod4
- .long OpAEX1mod4
- .long OpAFM0mod4
- .long OpB0mod4
- .long OpB1M0mod4
- .long OpB2M0mod4
- .long OpB3M0mod4
- .long OpB4X1mod4
- .long OpB5M0mod4
- .long OpB6X1mod4
- .long OpB7M0mod4
- .long OpB8mod4
- .long OpB9M0mod4
- .long OpBAX1mod4
- .long OpBBX1mod4
- .long OpBCX1mod4
- .long OpBDM0mod4
- .long OpBEX1mod4
- .long OpBFM0mod4
- .long OpC0X1mod4
- .long OpC1M0mod4
- .long OpC2mod4
- .long OpC3M0mod4
- .long OpC4X1mod4
- .long OpC5M0mod4
- .long OpC6M0mod4
- .long OpC7M0mod4
- .long OpC8X1mod4
- .long OpC9M0mod4
- .long OpCAX1mod4
- .long OpCBmod4
- .long OpCCX1mod4
- .long OpCDM0mod4
- .long OpCEM0mod4
- .long OpCFM0mod4
- .long OpD0mod4
- .long OpD1M0mod4
- .long OpD2M0mod4
- .long OpD3M0mod4
- .long OpD4mod4
- .long OpD5M0mod4
- .long OpD6M0mod4
- .long OpD7M0mod4
- .long OpD8mod4
- .long OpD9M0mod4
- .long OpDAX1mod4
- .long OpDBmod4
- .long OpDCmod4
- .long OpDDM0mod4
- .long OpDEM0mod4
- .long OpDFM0mod4
- .long OpE0X1mod4
- .long OpE1M0mod4
- .long OpE2mod4
- .long OpE3M0mod4
- .long OpE4X1mod4
- .long OpE5M0mod4
- .long OpE6M0mod4
- .long OpE7M0mod4
- .long OpE8X1mod4
- .long OpE9M0mod4
- .long OpEAmod4
- .long OpEBmod4
- .long OpECX1mod4
- .long OpEDM0mod4
- .long OpEEM0mod4
- .long OpEFM0mod4
- .long OpF0mod4
- .long OpF1M0mod4
- .long OpF2M0mod4
- .long OpF3M0mod4
- .long OpF4mod4
- .long OpF5M0mod4
- .long OpF6M0mod4
- .long OpF7M0mod4
- .long OpF8mod4
- .long OpF9M0mod4
- .long OpFAX1mod4
- .long OpFBmod4
- .long OpFCmod4
- .long OpFDM0mod4
- .long OpFEM0mod4
- .long OpFFM0mod4
-
-
-;@ ##############################################
-;@ BRK
-;@ ##############################################
-Op00mod1:
-lbl00mod1:
- ;@ set BRK flag
- ;@ Only used by SuperFX emulation
- mov r0,#1
- strb r0,[cpu_context,#BRKTriggered]
-
- tst reg_f, #MASK_EMUL
- bne 1f
-
- push8_s0 reg_p_bank
- pushPC
- getSnesFlags r1
- push8_s0
- clearFlag #MASK_DECIMAL
- SetIRQ
- bic reg_p_bank, reg_p_bank, #0xFF
- mov r0,0xE6
- orr r0,r0,0xFF00
- readmem16_s0
- setPCbase
- use_cycles 2
- b 2f
-
-1:
- pushPC
- getSnesFlags r1
- push8_s0
- clearFlag #MASK_DECIMAL
- SetFlag #MASK_IRQ
- bic reg_p_bank, reg_p_bank, #0xFF
- mov r0,0xFE
- orr r0,r0,0xFF00
- readmem16_s0
- setPCbase
- use_cycles 1
-2:
-
-
-
-
\ No newline at end of file
--- /dev/null
+/*
+ * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
+ *
+ * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
+ * Jerremy Koot (jkoot@snes9x.com)
+ *
+ * Super FX C emulator code
+ * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
+ * Gary Henderson.
+ * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
+ *
+ * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
+ * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
+ * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
+ *
+ * DOS port code contains the works of other authors. See headers in
+ * individual files.
+ *
+ * Snes9x homepage: http://www.snes9x.com
+ *
+ * Permission to use, copy, modify and distribute Snes9x in both binary and
+ * source form, for non-commercial purposes, is hereby granted without fee,
+ * providing that this license information and copyright notice appear with
+ * all copies and any derived work.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event shall the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Snes9x is freeware for PERSONAL USE only. Commercial users should
+ * seek permission of the copyright holders first. Commercial use includes
+ * charging money for Snes9x or software derived from Snes9x.
+ *
+ * The copyright holders request that bug fixes and improvements to the code
+ * should be forwarded to them so everyone can benefit from the modifications
+ * in future versions.
+ *
+ * Super NES and Super Nintendo Entertainment System are trademarks of
+ * Nintendo Co., Limited and its subsidiary companies.
+ */
+#include "snes9x.h"
+#include "memmap.h"
+#include "ppu.h"
+#include "cpuexec.h"
+
+#include "sa1.h"
+#define CPU SA1
+#define ICPU SA1ICPU\r
+//#define ICPU SA1
+#define Registers SA1Registers
+#define S9xGetByte S9xSA1GetByte
+#define S9xGetWord S9xSA1GetWord
+#define S9xSetByte S9xSA1SetByte
+#define S9xSetWord S9xSA1SetWord
+#define S9xSetPCBase S9xSA1SetPCBase
+#define S9xOpcodesM1X1 S9xSA1OpcodesM1X1
+#define S9xOpcodesM1X0 S9xSA1OpcodesM1X0
+#define S9xOpcodesM0X1 S9xSA1OpcodesM0X1
+#define S9xOpcodesM0X0 S9xSA1OpcodesM0X0
+#define S9xOpcode_IRQ S9xSA1Opcode_IRQ
+#define S9xOpcode_NMI S9xSA1Opcode_NMI
+#define S9xUnpackStatus S9xSA1UnpackStatus
+#define S9xPackStatus S9xSA1PackStatus
+#define S9xFixCycles S9xSA1FixCycles\r
+//CSNES Not even used\r
+/*
+#define Immediate8 SA1Immediate8
+#define Immediate16 SA1Immediate16
+#define Relative SA1Relative
+#define RelativeLong SA1RelativeLong
+#define AbsoluteIndexedIndirect SA1AbsoluteIndexedIndirect
+#define AbsoluteIndirectLong SA1AbsoluteIndirectLong
+#define AbsoluteIndirect SA1AbsoluteIndirect
+#define Absolute SA1Absolute
+#define AbsoluteLong SA1AbsoluteLong
+#define Direct SA1Direct
+#define DirectIndirectIndexed SA1DirectIndirectIndexed
+#define DirectIndirectIndexedLong SA1DirectIndirectIndexedLong
+#define DirectIndexedIndirect SA1DirectIndexedIndirect
+#define DirectIndexedX SA1DirectIndexedX
+#define DirectIndexedY SA1DirectIndexedY
+#define AbsoluteIndexedX SA1AbsoluteIndexedX
+#define AbsoluteIndexedY SA1AbsoluteIndexedY
+#define AbsoluteLongIndexedX SA1AbsoluteLongIndexedX
+#define DirectIndirect SA1DirectIndirect
+#define DirectIndirectLong SA1DirectIndirectLong
+#define StackRelative SA1StackRelative
+#define StackRelativeIndirectIndexed SA1StackRelativeIndirectIndexed\r
+*/
+
+//#undef CPU_SHUTDOWN
+#undef VAR_CYCLES
+#define SA1_OPCODES
+
+#include "cpuops.cpp"
+
+void S9xSA1MainLoop ()
+{
+ int i;
+
+#if 0
+ if (SA1.Flags & NMI_FLAG)
+ {
+ SA1.Flags &= ~NMI_FLAG;
+ if (SA1.WaitingForInterrupt)
+ {
+ SA1.WaitingForInterrupt = FALSE;
+ SA1.PC++;
+ }
+ S9xSA1Opcode_NMI ();
+ }
+#endif
+ if (SA1.Flags & IRQ_PENDING_FLAG)
+ {
+ if (SA1.IRQActive)
+ {
+ if (SA1.WaitingForInterrupt)
+ {
+ SA1.WaitingForInterrupt = FALSE;
+ SA1.PC++;
+ }
+ if (!SA1CheckFlag (IRQ))
+ S9xSA1Opcode_IRQ ();
+ }
+ else
+ SA1.Flags &= ~IRQ_PENDING_FLAG;
+ }
+#ifdef DEBUGGER
+ if (SA1.Flags & TRACE_FLAG)
+ {
+ for (i = 0; i < 3 && SA1.Executing; i++)
+ {
+ S9xSA1Trace ();
+#ifdef CPU_SHUTDOWN
+ SA1.PCAtOpcodeStart = SA1.PC;
+#endif
+ (*SA1.S9xOpcodes [*SA1.PC++].S9xOpcode) (&SA1Registers, &SA1ICPU, &SA1);
+ }
+ }
+ else
+#endif
+ for (i = 0; i < 3 && SA1.Executing; i++)
+ {
+#ifdef CPU_SHUTDOWN
+ SA1.PCAtOpcodeStart = SA1.PC;
+#endif
+ (*SA1ICPU.S9xOpcodes [*SA1.PC++].S9xOpcode) (&SA1Registers, &SA1ICPU, &SA1);
+ }
+}
+++ /dev/null
-
- .align 4
- .globl DecodeBlockAsm
- .globl DecodeBlockAsm2
-
-/*
-;Bit-Rate Expand Waveform
-;
-;Desc:
-; Decompresses a 9-byte bit-rate reduced block into 16 16-bit samples.
-; This procedure is designed to be recursively called to decompress a series of blocks.
-;In:
-; R0=ESI-> Sample Block
-; R1=EDI -> Output buffer
-; R2=EDX =3D Last sample of previous block (32-bit)
-; R3=EBX =3D Next to last sample (sign extended from 16-bits)
-;Out:
-; R0=ESI -> Next Block
-; R1=EDI -> After last sample
-; R2=EDX =3D Last sample (32-bit)
-; R3=EBX =3D Next to last sample (16-bit)
-;Destroys:
-; R4=EAX
-*/
-
-.macro SMP12CLIP16
- CMP R4, R12
- BGT 1111f
- MOVNE R4, R12
- B 1112f
-1111:
- CMP R4, R11
- MOVGT R4, R11
-1112:
- CMP R2, R12
- BGT 1121f
- MOVNE R2, R12
- B 1122f
-1121:
- CMP R2, R11
- MOVGT R2, R11
-1122:
-.endm
-
-@ void DecodeBlockAsm2 (int8 *, int16 *, int32 *, int32 *);
-@ DecodeBlockAsm2 (compressed, raw, &ch->previous [0], &ch->previous [1]);
- .align 4
-DecodeBlockAsm:
-
- STMFD SP!,{R4,LR}
-
- STMFD SP!,{R2,R3}
- LDR R2,[R2]
- LDR R3,[R3]
- BL BREWave
- LDMFD SP!,{R0,R1}
- STR R2,[R0]
- STR R3,[R1]
-
- LDMFD SP!,{R4,LR}
- MOV PC,LR
-
-BREWave:
- STMFD SP!,{R5,R6,R7}
- @ Mov AL,[ESI] ;Get header byte
- @ Inc ESI
-
- LDRB R4,[R0],#1
- @ Mov CL,0CFh
- @ Sub CL,AL
- @ SetC AH
- @ Dec AH
- @ And CL,AH
- @ ShR CL,4 ;Isolate range
- CMP R4,#0xD0
- MOVHS R5,#0
- MOVLO R5,#0xCF
- SUBLO R5,R5,R4
- MOVLO R5,R5,LSR #4
-
- @ Mov CH,8 ;Decompress 8 bytes (16 nybbles)
- MOV R6,#8
- @ Test AL,0Ch ;Does block use ADPCM compression?
- @ JZ @@Method0 ; No
- TST R4,#0xC
- BEQ Method0
- @ Test AL,8 ;Does block use method 1?
- @ JZ @@Method1 ; Yes
- TST R4,#0x8
- BEQ Method1
- @ Test AL,4 ;Does block use method 2?
- @ jnz @@Method3 ; Yes
- @ jmp @@Method2
- TST R4,#0x4
- BEQ Method2
- B Method3 @ ;Must use method 3
-/*
-ALIGN 16
- ;[Smp] ----------------------------------*/
-Method0:
- ADD R5,R5,#16
-Method0loop:
- @ XOr EAX,EAX
- @ XOr EDX,EDX
- @ Mov AH,byte[ESI] ;Get byte
- @ Mov DH,AH
- @ And AH,0F0h ;AH = High nybble << 12
- @ ShL DH,4 ;DH = Low nybble << 12
- LDRB R4,[R0],#1
- @ R4 = 0x000000hl
- MOV R2,R4,LSL #(28)
- @ R2 = 0xl0000000
- MOV R4,R4,LSL #(24)
- @ R4 = 0xhl000000
- BIC R4,R4,#0x0F000000
- @ R4 = 0xh0000000
-
- @ SAR AX,CL ;Reduce samples according to range
- @ SAR DX,CL
- MOV R4,R4,ASR R5
- MOV R2,R2,ASR R5
-
- @ Mov word[EDI],AX
- @ Mov word[2+EDI],DX
- STRH R4,[R1],#2
- STRH R2,[R1],#2
-
- @ Add EDI,4
- @ Inc ESI
- @ Dec CH
- @ JNZ Short @@Method0
- @ MovSX EDX,DX
- @ MovSX EBX,AX
- @ Ret
- SUBS R6,R6,#1
- BNE Method0loop
- MOV R2,R2,LSL #16
- MOV R2,R2,ASR #16
- MOV R3,R4,LSL #16
- MOV R3,R3,ASR #16
- LDMFD SP!,{R5,R6,R7}
- MOV PC,LR
-
-@ ALIGN 16
-@ ;[Delta]+[Smp-1](15/16) -----------------
-Method1:
- ADD R7,R5,#16
-Method1loop:
- @ MovSX EBX,byte[ESI] ;Sign extend upper nybble into EBX
- @ And BL,0F0h
- @ ShL EBX,8
- @ SAR EBX,CL
- LDRSB R3,[R0]
- BIC R3,R3,#0xF
- MOV R3,R3,LSL #8
- MOV R3,R3,ASR R5
-
- @ MovSX EAX,DX
- @ Add EBX,EAX
- @ SAR EAX,4
- @ Sub EBX,EAX
- MOV R4,R2,LSL #16
- ADD R3,R3,R4,ASR #16
- SUB R3,R3,R4,ASR #20
-
- @ Mov word[EDI],BX
- STRH R3,[R1],#2
-
- @ Mov DL,byte[ESI]
- @ ShL EDX,12
- @ MovSX EDX,DX
- @ SAR EDX,CL
- LDRSB R2,[R0],#1
- MOV R2,R2,LSL #(12+16)
- MOV R2,R2,ASR R7
-
- @ MovSX EAX,BX
- @ Add EDX,EAX
- @ SAR EAX,4
- @ Sub EDX,EAX
- MOV R4,R3,LSL #16
- ADD R2,R2,R4,ASR #16
- SUB R2,R2,R4,ASR #20
-
- @ Mov word[2+EDI],DX
- STRH R2,[R1],#2
- @ Add EDI,4
-
- @ Inc ESI
-
- @ Dec CH
- @ JNZ Short @@Method1
- @ MovSX EBX,BX
- @ Ret
- SUBS R6,R6,#1
- BNE Method1loop
-
- MOV R3,R3,LSL #16
- MOV R3,R3,ASR #16
-
- LDMFD SP!,{R5,R6,R7}
- MOV PC,LR
-
-@ ALIGN 16
- @ ;[Delta]+[Smp-1](61/32)-[Smp-2](30/32) --
-Method2:
- ADD R7,R5,#16
-Method2loop:
- @ MovSX EAX,Byte[ESI] ;EAX = Delta
- LDRSB R4,[R0]
- @ And AL,0F0h
- @ ShL EAX,8
- @ SAR EAX,CL
- BIC R4,R4,#0xF
- MOV R4,R4,LSL #8
- MOV R4,R4,ASR R5
-
- @ ;Subtract 15/16 of second sample -----
- @ Sub EAX,EBX
- @ SAR EBX,4
- @ Add EAX,EBX
- @ MovSX EBX,DX
- SUB R4,R4,R3
- ADD R4,R4,R3,ASR #4
- MOV R3,R2
-
- @ ;Add 61/32 of last sample ------------
- @ And DL,~3
- @ Add EAX,EDX
- @ Add EAX,EDX
- @ SAR EDX,4
- @ Sub EAX,EDX
- @ SAR EDX,1
- BIC R2,R2,#3
- ADD R4,R4,R2,LSL #1
- SUB R4,R4,R2,ASR #4
- @ MovSX EDX,DX
- @ Sub EAX,EDX
- SUB R4,R4,R2,ASR #5
- @ Mov word[EDI],AX
- STRH R4,[R1],#2
-
- @ Mov DL,byte[ESI]
- LDRB R2,[R0],#1
- @ ShL EDX,12
- @ MovSX EDX,DX
- @ SAR EDX,CL
- MOV R2,R2,LSL #(12+16)
- MOV R2,R2,ASR R7
-
- @ Sub EDX,EBX
- @ SAR EBX,4
- @ Add EDX,EBX
- @ MovSX EBX,AX
- SUB R2,R2,R3
- ADD R2,R2,R3,ASR #4
- MOV R3,R4
-
- @ And AL,~3
- @ Add EDX,EAX
- @ Add EDX,EAX
- @ SAR EAX,4
- @ Sub EDX,EAX
- @ SAR EAX,1
- BIC R4,R4,#3
- ADD R2,R2,R4,LSL #1
- SUB R2,R2,R4,ASR #4
- @ MovSX EAX,AX
- @ Sub EDX,EAX
- SUB R2,R2,R4,ASR #5
-
- @ Mov word[2+EDI],DX
- STRH R2,[R1],#2
- @ Add EDI,4
-
- @ Inc ESI
-
- @ Dec CH
- @ JNZ @@Method2
- @ Ret
- SUBS R6,R6,#1
- BNE Method2loop
- LDMFD SP!,{R5,R6,R7}
- MOV PC,LR
-
-@ ALIGN 16
- @ ;[Delta]+[Smp-1](115/64)-[Smp-2](52/64) -
-Method3:
- ADD R7,R5,#16
-Method3loop:
- @ MovSX EAX,Byte[ESI]
- LDRSB R4,[R0]
- @ And AL,0F0h
- @ ShL EAX,8
- @ SAR EAX,CL
- BIC R4,R4,#0xF
- MOV R4,R4,LSL #8
- MOV R4,R4,ASR R5
-
- @ ;Subtract 13/16 of second sample -----
- @ Sub EAX,EBX
- @ SAR EBX,3
- @ Add EAX,EBX
- @ SAR EBX,1
- @ Add EAX,EBX
- @ MovSX EBX,DX
- SUB R4,R4,R3
- ADD R4,R4,R3,ASR #3
- ADD R4,R4,R3,ASR #4
- MOV R3,R2
-
- @ ;Add 115/64 of last sample -----------
- @ And DL, ~3
- @ Add EAX,EDX
- @ Add EAX,EDX
- @ SAR EDX,3
- @ Sub EAX,EDX
- @ SAR EDX,1
- @ Sub EAX,EDX
- @ SAR EDX,2
- @ Sub EAX,EDX
- BIC R2,R2,#3
- ADD R4,R4,R2,LSL #1
- SUB R4,R4,R2,ASR #3
- SUB R4,R4,R2,ASR #4
- SUB R4,R4,R2,ASR #6
-
- @ Mov word[EDI],AX
- STRH R4,[R1],#2
-
- @ Mov DL,byte[ESI]
- LDRB R2,[R0],#1
-
- @ ShL EDX,12
- @ MovSX EDX,DX
- @ SAR EDX,CL
- MOV R2,R2,LSL #(12+16)
- MOV R2,R2,ASR R7
-
- @ Sub EDX,EBX
- @ SAR EBX,3
- @ Add EDX,EBX
- @ SAR EBX,1
- @ Add EDX,EBX
- @ MovSX EBX,AX
- SUB R2,R2,R3
- ADD R2,R2,R3,ASR #3
- ADD R2,R2,R3,ASR #4
- MOV R3,R4
-
- @ And AL, ~3
- @ Add EDX,EAX
- @ Add EDX,EAX
- @ SAR EAX,3
- @ Sub EDX,EAX
- @ SAR EAX,1
- @ Sub EDX,EAX
- @ SAR EAX,2
- @ Sub EDX,EAX
- BIC R4,R4,#3
- ADD R2,R2,R4,LSL #1
- SUB R2,R2,R4,ASR #3
- SUB R2,R2,R4,ASR #4
- SUB R2,R2,R4,ASR #6
-
- @ Mov word[2+EDI],DX
- STRH R4,[R1],#2
- @ Add EDI,4
-
- @ Inc ESI
-
- @ Dec CH
- @ JNZ @@Method3
- @ Ret
- SUBS R6,R6,#1
- BNE Method3loop
-
- LDMFD SP!,{R5,R6,R7}
- MOV PC,LR
-
-
-DecodeBlockAsm2:
- STMFD SP!,{R4,R11,LR}
-
- @ R12 = -32768
- LDR R12, = (-32768)
- @ R11 = 32767
- LDR R11, = 32767
-
-
- @ R0 = source (compressed)
- @ R1 = destination (uncompressed)
- @
-
- /*mov esi,dword[esp+20]
- mov edi,dword[esp+24]
- mov edx,dword[esp+28]
- mov edx,dword[edx]
- mov ebx,dword[esp+32]
- mov ebx,dword[ebx]*/
-
- @ call BREWave2
- @ sauvgarde les valeurs de R2 et R3 (&ch->prev[0] et &...[1])
- STMFD SP!,{R2,R3}
- LDR R2,[R2]
- LDR R3,[R3]
- BL BREWave2
- @ renvoie dans R2 et R3 les valeurs a mettre dans &ch->prev[0] et &ch...[1]
- /*mov eax,dword[esp+28]
- mov dword[eax],edx
- mov eax,dword[esp+32]
- mov dword[eax],ebx*/
- LDMFD SP!,{R0,R1}
- STR R2,[R0]
- STR R3,[R1]
-
- LDMFD SP!,{R4,R11,LR}
- MOV PC,LR
- @ ret
-
-@ ALIGN 16
-BREWave2:
- @ Push CX
- STMFD SP!,{R5,R6}
- @ Mov AL,byte [esi] ;Get header byte
- @ Inc esi
- LDRB R4,[R0],#1
- @ Mov CL,0CFh
- @ Sub CL,AL ;Invert range
- @ ShR CL,4 ;Isolate range
- MOV R5,#0xCF
- SUB R5,R5,R4
- MOV R5,R5,LSR #4
- @ Mov CH,8 ;Decompress 8 bytes (16 nybbles)
- MOV R6,#8
- @ Test AL,0Ch ;Does block use ADPCM compression?
- @ JZ @@Method02 ; No
- TST R4,#0xC
- BEQ Method02
- @ Test AL,8 ;Does block use method 1?
- @ JZ @@Method12 ; Yes
- TST R4,#0x8
- BEQ Method12
- @ Test AL,4 ;Does block use method 2?
- @ jnz @@Method332 ; Yes
- @ jmp @@Method22
- TST R4,#0x4
- BEQ Method22
- B Method32
-@ @@Method332:
- @ Jmp @@Method32 ;Must use method 3
-
-@ ALIGN 16
-@ ;[Smp] ----------------------------------
-@ @@Method02:
-Method02:
- @ shr al, 4
- MOV R4,R4,LSR #4
- @ mov cl, al
- MOV R5,R4
- @ cmp cl, 12
- CMP R4,#12
- @ jbe @@Method022
- SUBLS R5,R5,#4
- @ sub cl, 4
-Method022:
- @ XOr AX,AX
- @ XOr DX,DX
- @ Mov al,byte [esi] ;Get byte
- LDRSB R4,[R0],#1
- @ mov dl, al
- @ sar al, 4
- @ sal dl, 4
- @ sar dl, 4
- @ movsx eax, al
- @ movsx edx, dl
- MOV R2,R4,LSL #28
- MOV R4,R4,ASR #4 @ top nib
- MOV R2,R2,ASR #28 @ bottom nib
- @ sal eax,cl ;Reduce samples according to range
- @ sal edx,cl
- MOV R4,R4,ASL R5 @ <<shift
- MOV R2,R2,ASL R5 @ <<shift
-
- @ call SMP12CLIP16
- SMP12CLIP16 @ clip
-
- @ Mov [edi],AX
- STRH R4,[R1],#2 @ store
- @ Mov [2+edi],DX
- STRH R2,[R1],#2
- @ Add edi,4
- @ Inc esi @ deja fait plus haut
- @ Dec CH
- SUBS R6,R6,#1
- @ JNZ @@Method022
- BNE Method022
- @ Pop CX
- LDMFD SP!,{R5,R6}
- @ MovSX EDX,DX
- @ deja bon
- @ MovSX EBX,AX
- MOV R3,R4
-
- @ Ret
- MOV PC,LR
-
-@ ALIGN 16
-@ ;[Delta]+[Smp-1](15/16) -----------------
-@ @@Method12:
-Method12:
- ADD R5,R5,#16
-Method12loop:
-@ MovSX EBX,byte [esi] ;Sign extend upper nybble into EBX
-@ And BL,0F0h
- LDRB R3,[R0]
- BIC R3,R3,#0xF
-
- @ ShL BX,8
- @ SAR BX,CL
- MOV R3,R3, LSL #(8+16)
- MOV R3,R3,ASR R5
-
- @ MovSX EAX,DX
- @ Add EBX,EAX
- @ SAR EAX,4
- @ Sub EBX,EAX
- MOV R4,R2,LSL #16
- ADD R3,R3,R4,ASR #16 @ + 15/16*(smp-1)
- SUB R3,R3,R4,ASR #20
-
- @ Mov [edi],BX
- STRH R3,[R1],#2
-
- @ Mov DL,byte [esi]
- LDRB R2,[R0],#1
- @ ShL DX,12
- @ SAR DX,CL
- @ MovSX EDX,DX
- MOV R2,R2,LSL #(12+16)
- MOV R2,R2,ASR R5
-
-
- @ MovSX EAX,BX
- @ Add EDX,EAX
- @ SAR EAX,4
- @ Sub EDX,EAX
- MOV R4,R3,LSL #16
- ADD R2,R2,R4,ASR #16
- SUB R2,R2,R4,ASR #20 @ + 15/16*(smp-1)
-
- @ Mov [2+edi],DX
- STRH R2,[R1],#2
- @ Add edi,4 @ deja fait
- @ Inc esi @ deja fait
- @ Dec CH
- @ JNZ @@Method12
- SUBS R6,R6,#1
- BNE Method12loop
- @ Pop CX
- @ MovSX EBX,BX
- @ Ret
- MOV R3,R3,LSL #16
- LDMFD SP!,{R5,R6}
- MOV R3,R3,ASR #16
- MOV PC,LR
-
-@ ALIGN 16
-@ ;[Delta]+[Smp-1](61/32)-[Smp-2](30/32) --
-@ @@Method22:
-Method22:
- /*MOV R2,#0
- MOV R3,#0
- LDMFD SP!,{R5,R6}
- MOV PC,LR*/
- ADD R5,R5,#16
-Method22loop:
-
-@ MovSX EAX,byte [esi] ;EAX =3D Delta
- LDRB R4,[R0]
-@ And AL,0F0h
- BIC R4,R4,#0xF
-@ ShL AX,8
-@ SAR AX,CL
- MOV R4,R4,LSL #(8+16)
- MOV R4,R4,ASR R5
-
-@ ;Subtract 15/16 of second sample -----
-@ Sub EAX,EBX
- SUB R4,R4,R3
-@ SAR EBX,4
-@ Add EAX,EBX
- ADD R4,R4,R3,ASR #4
-@ MovSX EBX,DX ;Truncate lower 16-bits
- MOV R3,R2, LSL #16
- MOV R3,R3, ASR #16
-
-@ ;Add 61/32 of last sample ------------
-@ And DL,~3 ;(Lose lower 2-bits of precision)
- BIC R2,R2,#3
-@ Add EAX,EDX
-@ Add EAX,EDX
- ADD R4,R4,R2
- ADD R4,R4,R2
-@ SAR EDX,5
- MOV R2,R2,ASR #5
-@ Sub EAX,EDX
- SUB R4,R4,R2
-@ ShL EDX,1
-@ MovSX EDX,DX
- MOV R2,R2,LSL #(1+16)
-@ Sub EAX,EDX
- SUB R4,R4,R2,ASR #(16)
-
-@ Mov [edi],AX
- STRH R4,[R1],#2
-
-@ Mov DL,byte [esi]
- LDRB R2,[R0],#1
-@ ShL DX,12
-@ SAR DX,CL
-@ MovSX EDX,DX
- MOV R2,R2,LSL #(12+16)
- MOV R2,R2,ASR R5
-
-@ Sub EDX,EBX
- SUB R2,R2,R3
-@ SAR EBX,4
-@ Add EDX,EBX
- ADD R2,R2,R3,ASR #4
-@ MovSX EBX,AX
- MOV R3,R4,LSL #16
- MOV R3,R3,ASR #16
-
-@ And AL,~3
- BIC R4,R4,#3
-@ Add EDX,EAX
-@ Add EDX,EAX
- ADD R2,R2,R4
- ADD R2,R2,R4
-@ SAR EAX,5
- MOV R4,R4,ASR #5
-@ Sub EDX,EAX
- SUB R2,R2,R4
-@ ShL EAX,1
-@ MovSX EAX,AX
- MOV R4,R4,LSL #(1+16)
-@ Sub EDX,EAX
- SUB R2,R2,R4,ASR #(16)
-
-
-@ Mov [2+edi],DX
- STRH R2,[R1],#2
-@ Add edi,4
-
-@ Inc esi
-
-@ Dec CH
-@ JNZ @@Method22
- SUBS R6,R6,#1
- BNE Method22loop
-@ Pop CX
-@ Ret
- LDMFD SP!,{R5,R6}
- MOV PC,LR
-
-@ ALIGN 16
-@ ;[Delta]+[Smp-1](115/64)-[Smp-2](52/64) -
-@ @@Method32:
-Method32:
- /*MOV R2,#0
- MOV R3,#0
- LDMFD SP!,{R5,R6}
- MOV PC,LR*/
- ADD R5,R5,#16
-Method32loop:
-@ MovSX EAX,byte [esi]
- LDRB R4,[R0]
-@ And AL,0F0h
- BIC R4,R4,#0xF
-@ ShL AX,8
-@ SAR AX,CL
- MOV R4,R4,LSL #(8+16)
- MOV R4,R4,ASR R5
-
-@ ;Subtract 13/16 of second sample -----
-@ Sub EAX,EBX
- SUB R4,R4,R3
-@ SAR EBX,3
-@ Add EAX,EBX
- ADD R4,R4,R3,ASR #3
-@ SAR EBX,1
-@ Add EAX,EBX
- ADD R4,R4,R3,ASR #4
-@ MovSX EBX,DX
- MOV R3,R2,LSL #16
- MOV R3,R3,ASR #16
-
-@ ;Add 115/64 of last sample -----------
-@ ; And DL,~3
-@ Add EAX,EDX
-@ Add EAX,EDX
- ADD R4,R4,R2
- ADD R4,R4,R2
-@ SAR EDX,3
-@ Sub EAX,EDX
- SUB R4,R4,R2,ASR #3
-@ SAR EDX,1
-@ Sub EAX,EDX
- SUB R4,R4,R2,ASR #4
-@ SAR EDX,2
-@ Sub EAX,EDX
- SUB R4,R4,R2,ASR #6
-
-@ Mov [edi],AX
- STRH R4,[R1],#2
-
-@ Mov DL, [esi]
- LDRB R2,[R0],#1
-@ ShL DX,12
-@ SAR DX,CL
-@ MovSX EDX,DX
- MOV R2,R2,LSL #(12+16)
- MOV R2,R2,ASR R5
-
-@ Sub EDX,EBX
- SUB R2,R2,R3
-@ SAR EBX,3
-@ Add EDX,EBX
- ADD R2,R2,R3,ASR #3
-@ SAR EBX,1
-@ Add EDX,EBX
- ADD R2,R2,R3,ASR #4
-@ MovSX EBX,AX
- MOV R3,R4,LSL #16
- MOV R4,R4,ASR #16
-
-@ ; And AL,~3
-@ Add EDX,EAX
-@ Add EDX,EAX
- ADD R2,R2,R4
- ADD R2,R2,R4
-@ SAR EAX,3
-@ Sub EDX,EAX
- SUB R2,R2,R4,ASR #3
-@ SAR EAX,1
-@ Sub EDX,EAX
- SUB R2,R2,R4,ASR #4
-@ SAR EAX,2
-@ Sub EDX,EAX
- SUB R2,R2,R4,ASR #6
-
-@ Mov [2+edi],DX
- STRH R2,[R1],#2
-@ Add edi,4
-
-@ Inc esi
-
-@ Dec CH
-@ JNZ @@Method32
- SUBS R6,R6,#1
- BNE Method32loop
-@ Pop CX
-@ Ret
- LDMFD SP!,{R5,R6}
- MOV PC,LR
-
-/*SMP12CLIP16:
- cmp eax, -32768
- jg CLIP16SMP1SKIP0
- je CLIP16SMP1SKIP1
- mov eax, -32768
- jmp CLIP16SMP1SKIP1
-CLIP16SMP1SKIP0:
- cmp eax, 32767
- jle CLIP16SMP1SKIP1
- mov eax, 32767
-CLIP16SMP1SKIP1:
- cmp edx, -32768
- jg CLIP16SMP2SKIP0
- je CLIP16SMP2SKIP1
- mov edx, -32768
- jmp CLIP16SMP2SKIP1
-CLIP16SMP2SKIP0:
- cmp edx, 32767
- jle CLIP16SMP2SKIP1
- mov edx, 32767
-CLIP16SMP2SKIP1:*/
-
-
-.pool
projects / drnoksnes / commitdiff