mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-11-14 21:37:52 -07:00
8716a58ae3
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2999 8ced0084-cf51-0410-be5f-012b33b47a6e
656 lines
11 KiB
Plaintext
656 lines
11 KiB
Plaintext
; This is the trojan program we send to the DSP from DSPSpy to figure it out.
|
|
|
|
; A lot of constant definitions.
|
|
DSCR: equ 0xffc9 ; DSP DMA Control Reg
|
|
DSBL: equ 0xffcb ; DSP DMA Block Length
|
|
DSPA: equ 0xffcd ; DSP DMA DMEM Address
|
|
DSMAH: equ 0xffce ; DSP DMA Mem Address H
|
|
DSMAL: equ 0xffcf ; DSP DMA Mem Address L
|
|
|
|
ACSAH: equ 0xffd4
|
|
ACSAL: equ 0xffd5
|
|
ACEAH: equ 0xffd6
|
|
ACEAL: equ 0xffd7
|
|
ACCAH: equ 0xffd8
|
|
ACCAL: equ 0xffd9
|
|
AMDM: equ 0xffef ; ARAM DMA Request Mask
|
|
|
|
DIRQ: equ 0xfffb ; DSP Irq Request
|
|
DMBH: equ 0xfffc ; DSP Mailbox H
|
|
DMBL: equ 0xfffd ; DSP Mailbox L
|
|
CMBH: equ 0xfffe ; CPU Mailbox H
|
|
CMBL: equ 0xffff ; CPU Mailbox L
|
|
|
|
R00: equ 0x00
|
|
R01: equ 0x01
|
|
R02: equ 0x02
|
|
R03: equ 0x03
|
|
R04: equ 0x04
|
|
R05: equ 0x05
|
|
R06: equ 0x06
|
|
R07: equ 0x07
|
|
R08: equ 0x08
|
|
R09: equ 0x09
|
|
R0A: equ 0x0a
|
|
R0B: equ 0x0b
|
|
R0C: equ 0x0c
|
|
R0D: equ 0x0d
|
|
R0E: equ 0x0e
|
|
R0F: equ 0x0f
|
|
R10: equ 0x10
|
|
R11: equ 0x11
|
|
R12: equ 0x12
|
|
R13: equ 0x13
|
|
R14: equ 0x14
|
|
R15: equ 0x15
|
|
R16: equ 0x16
|
|
R17: equ 0x17
|
|
R18: equ 0x18
|
|
R19: equ 0x19
|
|
R1A: equ 0x1a
|
|
R1B: equ 0x1b
|
|
R1C: equ 0x1c
|
|
R1D: equ 0x1d
|
|
R1E: equ 0x1e
|
|
R1F: equ 0x1f
|
|
|
|
ACH0: equ 0x10
|
|
ACH1: equ 0x11
|
|
ACL0: equ 0x1e
|
|
ACL1: equ 0x1f
|
|
|
|
DSP_CR_IMEM: equ 2
|
|
DSP_CR_TO_CPU: equ 1
|
|
|
|
|
|
REGS_BASE: equ 0x0f80
|
|
MEM_HI: equ 0x0f7E
|
|
MEM_LO: equ 0x0f7F
|
|
|
|
; CODE STARTS HERE.
|
|
|
|
; Interrupt vectors 8 vectors, 2 opcodes each
|
|
|
|
jmp irq0
|
|
jmp irq1
|
|
jmp irq2
|
|
jmp irq3
|
|
jmp irq4
|
|
jmp irq5
|
|
jmp irq6
|
|
jmp irq7
|
|
|
|
; Main code at 0x10
|
|
sbset #0x02
|
|
sbset #0x03
|
|
sbclr #0x04
|
|
sbset #0x05
|
|
sbset #0x06
|
|
|
|
s40
|
|
lri $CR, #0x00ff
|
|
|
|
; Why do we have a main label here?
|
|
main:
|
|
|
|
clr $ACC1
|
|
clr $ACC0
|
|
|
|
; get address of memory dump and copy it to DRAM
|
|
|
|
call wait_for_dsp_mbox
|
|
si @DMBH, #0x8888
|
|
si @DMBL, #0xdead
|
|
si @DIRQ, #0x0001
|
|
|
|
call wait_for_cpu_mbox
|
|
lrs $ACL0, @CMBL
|
|
andi $acl1, #0x7fff
|
|
|
|
sr @MEM_HI, $ACL1
|
|
sr @MEM_LO, $ACL0
|
|
|
|
lri $r18, #0
|
|
lri $r19, #0 ;(DSP_CR_IMEM | DSP_CR_TO_CPU)
|
|
lri $r1a, #0x2000
|
|
lr $r1c, @MEM_HI
|
|
lr $r1e, @MEM_LO
|
|
call do_dma
|
|
|
|
|
|
; get address of registers and DMA them to ram
|
|
|
|
call wait_for_dsp_mbox
|
|
si @DMBH, #0x8888
|
|
si @DMBL, #0xbeef
|
|
si @DIRQ, #0x0001
|
|
|
|
call wait_for_cpu_mbox
|
|
lrs $ACL0, @CMBL
|
|
andi $acl1, #0x7fff
|
|
|
|
sr @MEM_HI, $ACL1
|
|
sr @MEM_LO, $ACL0
|
|
|
|
lri $r18, #REGS_BASE
|
|
lri $r19, #0 ;(DSP_CR_IMEM | DSP_CR_TO_CPU)
|
|
lri $r1a, #0x80
|
|
lr $r1c, @MEM_HI
|
|
lr $r1e, @MEM_LO
|
|
call do_dma
|
|
|
|
; Read in all the registers from RAM
|
|
|
|
lri $r00, #REGS_BASE+1
|
|
lrri $r01, @$r00
|
|
lrri $r02, @$r00
|
|
lrri $r03, @$r00
|
|
lrri $r04, @$r00
|
|
lrri $r05, @$r00
|
|
lrri $r06, @$r00
|
|
lrri $r07, @$r00
|
|
lrri $r08, @$r00
|
|
lrri $r09, @$r00
|
|
lrri $r0a, @$r00
|
|
lrri $r0b, @$r00
|
|
lrri $r0c, @$r00
|
|
lrri $r0d, @$r00
|
|
lrri $r0e, @$r00
|
|
lrri $r0f, @$r00
|
|
lrri $r10, @$r00
|
|
lrri $r11, @$r00
|
|
lrri $r12, @$r00
|
|
lrri $r13, @$r00
|
|
lrri $r14, @$r00
|
|
lrri $r15, @$r00
|
|
lrri $r16, @$r00
|
|
lrri $r17, @$r00
|
|
lrri $r18, @$r00
|
|
lrri $r19, @$r00
|
|
lrri $r1a, @$r00
|
|
lrri $r1b, @$r00
|
|
lrri $r1c, @$r00
|
|
lrri $r1d, @$r00
|
|
lrri $r1e, @$r00
|
|
lrri $r1f, @$r00
|
|
lr $r00, @REGS_BASE
|
|
|
|
; Right here we are at a specific predetermined state.
|
|
; Ideal environment to try instructions.
|
|
|
|
; We can call send_back at any time to send data back to the PowerPC.
|
|
|
|
; Calling set16 here seemed to crash the dsp tester in strange ways
|
|
; until I added set40 in send_back. Seems clear that it affects something important.
|
|
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
|
|
inc $acc0
|
|
call send_back
|
|
|
|
s16
|
|
inc $acc0
|
|
call send_back
|
|
|
|
; We're done - currently we only test one opcode, in this case 0x8600.
|
|
; It's possible to test many more in one go - just call send_back after each one.
|
|
|
|
jmp ende
|
|
|
|
; Below here is tons of random leftover test code from whoever last experimented with this.
|
|
|
|
; call dump_memory
|
|
; call send_back
|
|
|
|
cw 0x00de
|
|
cw 0x03f1
|
|
call send_back
|
|
|
|
cw 0x0200
|
|
cw 0x0a60
|
|
call send_back
|
|
|
|
cw 0x1c7e
|
|
call send_back
|
|
|
|
cw 0x8100
|
|
call send_back
|
|
|
|
cw 0x8900
|
|
call send_back
|
|
|
|
cw 0x009f
|
|
cw 0x00a0
|
|
call send_back
|
|
|
|
cw 0x00de
|
|
cw 0x03f1
|
|
call send_back
|
|
|
|
cw 0x5d00
|
|
call send_back
|
|
|
|
cw 0x0e50
|
|
call send_back
|
|
|
|
cw 0x0750
|
|
call send_back
|
|
|
|
cw 0x0270
|
|
call send_back
|
|
|
|
cw 0x5d00
|
|
call send_back
|
|
|
|
cw 0x00da
|
|
cw 0x03f2
|
|
call send_back
|
|
|
|
cw 0x8600
|
|
call send_back
|
|
|
|
JNS g_0c4d
|
|
; cw 0x0290
|
|
; cw 0x0c4d
|
|
; call send_back JX0
|
|
|
|
cw 0x00de
|
|
cw 0x03f3
|
|
call send_back
|
|
|
|
cw 0x5c00
|
|
call send_back
|
|
|
|
JLE g_0c38
|
|
; cw 0x0293
|
|
; cw 0x0c38 JX3
|
|
; call send_back
|
|
|
|
JMP g_0c52
|
|
|
|
; cw 0x029f
|
|
; cw 0x0c52
|
|
; call send_back
|
|
|
|
g_0c38:
|
|
cw 0x00db
|
|
cw 0x03f7
|
|
call send_back
|
|
|
|
cw 0x009e
|
|
cw 0x8000
|
|
call send_back
|
|
|
|
cw 0x4600
|
|
call send_back
|
|
|
|
JMP g_0c44
|
|
; cw 0x029f
|
|
; cw 0x0c44
|
|
; call send_back
|
|
|
|
g_0c3f:
|
|
cw 0x00db
|
|
cw 0x03f7
|
|
call send_back
|
|
|
|
cw 0x009e
|
|
cw 0x8000
|
|
call send_back
|
|
|
|
cw 0x5600
|
|
call send_back
|
|
|
|
g_0c44:
|
|
cw 0x00fe
|
|
cw 0x03f5
|
|
call send_back
|
|
|
|
cw 0x1fda
|
|
call send_back
|
|
|
|
cw 0x7c00
|
|
call send_back
|
|
|
|
cw 0x1f5e
|
|
call send_back
|
|
|
|
cw 0x00fe
|
|
cw 0x03f2
|
|
call send_back
|
|
|
|
JMP g_0c52
|
|
; cw 0x029f
|
|
; cw 0x0c52
|
|
; call send_back
|
|
|
|
g_0c4d:
|
|
|
|
cw 0x00de
|
|
cw 0x03f4
|
|
call send_back
|
|
|
|
cw 0x5d00
|
|
call send_back
|
|
|
|
JLE g_0c3f
|
|
; cw 0x0293
|
|
; cw 0x0c3f
|
|
; call send_back
|
|
|
|
g_0c52:
|
|
cw 0x8900
|
|
call send_back
|
|
|
|
cw 0x00dd
|
|
cw 0x03f5
|
|
call send_back
|
|
|
|
cw 0x1501
|
|
call send_back
|
|
|
|
cw 0x8100
|
|
call send_back
|
|
|
|
cw 0x00dc
|
|
cw 0x03f6
|
|
call send_back
|
|
|
|
cw 0x008b
|
|
cw 0x009f
|
|
call send_back
|
|
|
|
cw 0x0080
|
|
cw 0x0a00
|
|
call send_back
|
|
|
|
cw 0x0900
|
|
call send_back
|
|
|
|
BLOOPI #0x50, g_0c65
|
|
; cw 0x1150
|
|
; cw 0x0c65
|
|
; call send_back
|
|
|
|
|
|
cw 0x1878
|
|
call send_back
|
|
|
|
cw 0x4c00
|
|
call send_back
|
|
|
|
cw 0x1cfe
|
|
call send_back
|
|
|
|
cw 0x001f
|
|
call send_back
|
|
|
|
cw 0x1fd9
|
|
call send_back
|
|
g_0c65:
|
|
cw 0x1b18
|
|
call send_back
|
|
|
|
cw 0x009f
|
|
cw 0x0a60
|
|
call send_back
|
|
|
|
cw 0x1fc3
|
|
call send_back
|
|
|
|
cw 0x5c00
|
|
call send_back
|
|
|
|
cw 0x00fe
|
|
cw 0x03f1
|
|
call send_back
|
|
|
|
cw 0x00fc
|
|
cw 0x03f6
|
|
call send_back
|
|
|
|
cw 0x008b
|
|
cw 0xffff
|
|
call send_back
|
|
|
|
|
|
; This is where we jump when we're done testing, see above.
|
|
ende:
|
|
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
|
|
; We just fall into a loop, playing dead until someone resets the DSP.
|
|
dead_loop:
|
|
jmp dead_loop
|
|
|
|
; Utility function to do DMA.
|
|
; r1c:r1e - external address.
|
|
; r18 - address in DSP
|
|
do_dma:
|
|
sr @DSMAH, $r1c
|
|
sr @DSMAL, $r1e
|
|
sr @DSPA, $r18
|
|
sr @DSCR, $r19
|
|
sr @DSBL, $r1a ; This kicks off the DMA.
|
|
|
|
; Waits for said DMA to complete by watching a bit in DSCR.
|
|
wait_dma:
|
|
LRS $ACL1, @DSCR
|
|
andcf $acl1, #0x0004
|
|
JLZ wait_dma
|
|
RET
|
|
|
|
; This waits for a mail to arrive in the DSP in-mailbox.
|
|
wait_for_dsp_mbox:
|
|
lrs $ACL1, @DMBH
|
|
andcf $acl1, #0x8000
|
|
jlz wait_for_dsp_mbox
|
|
ret
|
|
|
|
; This waits for the CPU to grab a mail that we just sent from the DSP.
|
|
wait_for_cpu_mbox:
|
|
lrs $ACL1, @cmbh
|
|
andcf $acl1, #0x8000
|
|
jlnz wait_for_cpu_mbox
|
|
ret
|
|
|
|
; IRQ handlers. Not entirely sure what good they do currently.
|
|
irq0:
|
|
lri $acl0, #0x0000
|
|
jmp irq
|
|
irq1:
|
|
lri $acl0, #0x0001
|
|
jmp irq
|
|
irq2:
|
|
lri $acl0, #0x0002
|
|
jmp irq
|
|
irq3:
|
|
lri $acl0, #0x0003
|
|
jmp irq
|
|
irq4:
|
|
lri $acl0, #0x0004
|
|
jmp irq
|
|
irq5:
|
|
; No idea what this code is doing.
|
|
s40
|
|
mrr $r0d, $r1c
|
|
mrr $r0d, $r1e
|
|
clr $acc0
|
|
mrr $r1e, $r0d
|
|
mrr $r1c, $r0d
|
|
nop ; Or why there's a nop sled here.
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
rti
|
|
|
|
lri $acl0, #0x0005
|
|
jmp irq
|
|
irq6:
|
|
lri $acl0, #0x0006
|
|
jmp irq
|
|
irq7:
|
|
lri $acl0, #0x0007
|
|
jmp irq
|
|
|
|
irq:
|
|
lrs $ACL1, @DMBH
|
|
andcf $acl1, #0x8000
|
|
jlz irq
|
|
si @DMBH, #0x8BAD
|
|
sr @DMBL, $r0b
|
|
;sr @DMBL, $acl0
|
|
si @DIRQ, #0x0001
|
|
halt
|
|
|
|
; DMA:s the current state of the registers back to the PowerPC. To do this,
|
|
; it must write the contents of all regs to DRAM.
|
|
send_back:
|
|
; make state safe.
|
|
set40
|
|
; store registers to reg table
|
|
sr @REGS_BASE, $r00
|
|
lri $r00, #(REGS_BASE + 1)
|
|
srri @$r00, $r01
|
|
srri @$r00, $r02
|
|
srri @$r00, $r03
|
|
srri @$r00, $r04
|
|
srri @$r00, $r05
|
|
srri @$r00, $r06
|
|
srri @$r00, $r07
|
|
srri @$r00, $r08
|
|
srri @$r00, $r09
|
|
srri @$r00, $r0a
|
|
srri @$r00, $r0b
|
|
srri @$r00, $r0c
|
|
srri @$r00, $r0d
|
|
srri @$r00, $r0e
|
|
srri @$r00, $r0f
|
|
srri @$r00, $r10
|
|
srri @$r00, $r11
|
|
srri @$r00, $r12
|
|
srri @$r00, $r13
|
|
srri @$r00, $r14
|
|
srri @$r00, $r15
|
|
srri @$r00, $r16
|
|
srri @$r00, $r17
|
|
srri @$r00, $r18
|
|
srri @$r00, $r19
|
|
srri @$r00, $r1a
|
|
srri @$r00, $r1b
|
|
srri @$r00, $r1c
|
|
srri @$r00, $r1d
|
|
srri @$r00, $r1e
|
|
srri @$r00, $r1f
|
|
|
|
; Regs are stored. Prepare DMA.
|
|
lri $r18, #0x0000
|
|
lri $r19, #1 ;(DSP_CR_IMEM | DSP_CR_TO_CPU)
|
|
lri $r1a, #0x200
|
|
lr $r1c, @MEM_HI
|
|
lr $r1e, @MEM_LO
|
|
|
|
lri $r01, #8+8
|
|
|
|
; Now, why are we looping here?
|
|
bloop $r01, dma_copy
|
|
call do_dma
|
|
addi $r1e, #0x200
|
|
mrr $r1f, $r18
|
|
addi $r1f, #0x100
|
|
mrr $r18, $r1f
|
|
nop
|
|
|
|
dma_copy:
|
|
nop
|
|
|
|
; Wait for the CPU to send us a mail.
|
|
call wait_for_dsp_mbox
|
|
si @DMBH, #0x8888
|
|
si @DMBL, #0xfeeb
|
|
si @DIRQ, #0x0001
|
|
|
|
; wait for the CPU to recieve our response before we execute the next op
|
|
call wait_for_cpu_mbox
|
|
lrs $ACL0, @CMBL
|
|
andi $acl1, #0x7fff
|
|
|
|
; Restore all regs again so we're ready to execute another op.
|
|
lri $r00, #REGS_BASE+1
|
|
lrri $r01, @$r00
|
|
lrri $r02, @$r00
|
|
lrri $r03, @$r00
|
|
lrri $r04, @$r00
|
|
lrri $r05, @$r00
|
|
lrri $r06, @$r00
|
|
lrri $r07, @$r00
|
|
lrri $r08, @$r00
|
|
lrri $r09, @$r00
|
|
lrri $r0a, @$r00
|
|
lrri $r0b, @$r00
|
|
lrri $r0c, @$r00
|
|
lrri $r0d, @$r00
|
|
lrri $r0e, @$r00
|
|
lrri $r0f, @$r00
|
|
lrri $r10, @$r00
|
|
lrri $r11, @$r00
|
|
lrri $r12, @$r00
|
|
lrri $r13, @$r00
|
|
lrri $r14, @$r00
|
|
lrri $r15, @$r00
|
|
lrri $r16, @$r00
|
|
lrri $r17, @$r00
|
|
lrri $r18, @$r00
|
|
lrri $r19, @$r00
|
|
lrri $r1a, @$r00
|
|
lrri $r1b, @$r00
|
|
lrri $r1c, @$r00
|
|
lrri $r1d, @$r00
|
|
lrri $r1e, @$r00
|
|
lrri $r1f, @$r00
|
|
lr $r00, @REGS_BASE
|
|
|
|
ret ; from send_back
|
|
|
|
; I wish I knew what this 16 means.
|
|
send_back_16:
|
|
set40
|
|
call send_back
|
|
set16
|
|
ret
|
|
|
|
; This one's odd. Doesn't look like it should work since it uses acl0 but
|
|
; increments acm0... (acc0)
|
|
dump_memory:
|
|
lri $r02, #0x0000
|
|
lri $acl0, #0x1000
|
|
|
|
lri $r01, #0x1000
|
|
bloop $r01, _fill_loop2
|
|
|
|
mrr $r03, $acl0
|
|
nx'ld : $AX0.H, $AX1.H, @$AR0
|
|
|
|
mrr $r1f, $r00
|
|
mrr $r00, $r02
|
|
srri @$r00, $r1b
|
|
mrr $r02, $r00
|
|
mrr $r00, $r1f
|
|
|
|
addis $acc0, #0x1
|
|
|
|
_fill_loop2:
|
|
nop
|
|
ret ; from dump_memory
|