git.zerfleddert.de Git - linexec-j720/blob - asm/asmstuff.asm

   1         TTL     C:\pocket\asmstuff\asmstuff.cpp
   2
   3         AREA    |.drectve|, DRECTVE
   4         DCB     "-defaultlib:coredll.lib "
   5         DCB     "-defaultlib:corelibc.lib "
   6
   7         EXPORT  |?read_mmu@@YAHXZ|                      ; read_mmu
   8         AREA    |.pdata|, PDATA
   9 |$T231| DCD     |?read_mmu@@YAHXZ|
  10         DCD     0x40000200
  11         AREA    |.text|, CODE
  12 |?read_mmu@@YAHXZ| PROC                                 ; read_mmu
  13 |$M229|
  14
  15         mrc     p15, 0, r0, c2, c0, 0
  16         mov       pc, lr
  17
  18 |$M230|
  19         ENDP  ; |?read_mmu@@YAHXZ|, read_mmu
  20
  21         EXPORT  |?IntOff@@YAXXZ|                        ; IntOff
  22         AREA    |.pdata|, PDATA
  23 |$T235| DCD     |?IntOff@@YAXXZ|
  24         DCD     0x40000100
  25         AREA    |.text|, CODE
  26 |?IntOff@@YAXXZ| PROC                                   ; IntOff
  27 |$M233|
  28
  29         mrs             r4,cpsr
  30         orr             r1,r4,#0xef
  31         msr             cpsr_c,r1
  32         mov             pc, lr
  33
  34 |$M234|
  35         ENDP  ; |?IntOff@@YAXXZ|, IntOff
  36
  37
  38         EXPORT  |?DRAMloader@@YAXII@Z|                  ; DRAMloader
  39         AREA    |.pdata|, PDATA
  40 |$T239| DCD     |?DRAMloader@@YAXII@Z|
  41         DCD     0x40001004
  42         AREA    |.text|, CODE
  43 |?DRAMloader@@YAXII@Z| PROC                             ; DRAMloader
  44
  45         mov       r12, sp
  46         stmdb     sp!, {r0, r1}  ; stmfd
  47         stmdb     sp!, {r12, lr}  ; stmfd
  48         sub       sp, sp, #8
  49
  50 |$M237|
  51
  52         ldr             r3, [sp, #0x10]  ; 0x10 = 16
  53         str             r3, [sp]
  54         ldr             r2, [sp, #0x14]  ; 0x14 = 20
  55         str             r2, [sp, #4]
  56
  57         ldr             r1, [sp]           ; jump address
  58         ldr             r2, [sp, #4]       ; machine number
  59
  60         ldr             r0, =0x3fff
  61         mcr     p15, 0, r0, c7, c10, 4 ;Enable access
  62         mrc             p15, 0, r0, c2, c0, 0
  63         mov             r0, r0
  64
  65         mrc     p15, 0, r3, c1, c0, 0   ;/* disable the MMU */
  66         and     r3, r3, #0xfffffffe     ; xscale says p needs to be 0 ???
  67         mov     r3, #0x120
  68         mcr     p15, 0, r3, c1, c0, 0   ;/* disable the MMU */
  69         mrc     p15, 0, r0, c2, c0, 0
  70         mov     r0, r0
  71
  72 ; Jump into do_it and the kernel
  73         mov     pc,r1                   ; machine number is in register r2
  74
  75 |$M238|
  76         ENDP  ; |?DRAMloader@@YAXII@Z|, DRAMloader
  77         END
  78