| 1 | #include "lolevel.h"
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| 2 | #include "platform.h"
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| 3 | #include "core.h"
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| 4 |
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| 5 | const char * const new_sa = &_end;
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| 6 |
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| 7 | void __attribute__((naked,noinline)) jogdial_task_my();
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| 8 |
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| 9 | // Forward declarations
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| 10 | //void CreateTask_PhySw();
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| 11 | void CreateTask_spytask();
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| 12 |
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| 13 | void taskCreateHook(unsigned int *p)
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| 14 | {
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| 15 | p-=16;
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| 16 | if (p[0]==0xFF821ADC) p[0]=(unsigned int)mykbd_task;
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| 17 | if (p[0]==0xFF842C84) p[0]=(unsigned int)jogdial_task_my;
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| 18 | if (p[0]==0xFF85A278) p[0]=(unsigned int)movie_record_task;
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| 19 | if (p[0]==0xFF85E2b0) p[0]=(unsigned int)capt_seq_task;
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| 20 | if (p[0]==0xFF8791D0) p[0]=(unsigned int)init_file_modules_task;
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| 21 | if (p[0]==0xFF8b6A80) p[0]=(unsigned int)exp_drv_task;
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| 22 | }
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| 23 |
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| 24 | void boot();
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| 25 |
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| 26 | void boot() { //#fs
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| 27 | long *canon_data_src = (void*)0xFFB1CDDC;
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| 28 | long *canon_data_dst = (void*)0x1900;
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| 29 | long canon_data_len = 0xF134 - 0x1900; // data_end - data_start
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| 30 | long *canon_bss_start = (void*)0xF134; // just after data
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| 31 | long canon_bss_len = 0xCBC48 - 0xF134; //0xFEBC;
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| 32 |
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| 33 | long i;
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| 34 |
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| 35 | // Code taken from VxWorks CHDK. Changes CPU speed?
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| 36 | asm volatile (
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| 37 | "MRC p15, 0, R0,c1,c0\n"
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| 38 | "ORR R0, R0, #0x1000\n"
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| 39 | "ORR R0, R0, #4\n"
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| 40 | "ORR R0, R0, #1\n"
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| 41 | "MCR p15, 0, R0,c1,c0\n"
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| 42 | :::"r0");
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| 43 |
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| 44 | for(i=0;i<canon_data_len/4;i++)
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| 45 | canon_data_dst[i]=canon_data_src[i];
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| 46 |
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| 47 | for(i=0;i<canon_bss_len/4;i++)
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| 48 | canon_bss_start[i]=0;
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| 49 |
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| 50 | // asm volatile ("B sub_FF810000\n" );
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| 51 |
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| 52 | // Captain Hook
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| 53 | *(int*)0x1930 = (int)taskCreateHook;
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| 54 |
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| 55 | // jump to init-sequence that follows the data-copy-routine
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| 56 | asm volatile ("B sub_FF8101A4_my\n" );
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| 57 | }; //#fe
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| 58 |
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| 59 |
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| 60 | // init
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| 61 | void __attribute__((naked,noinline)) sub_FF8101A4_my() { //#fs
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| 62 | asm volatile (
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| 63 |
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| 64 | "loc_FF8101A4:\n" // ; CODE XREF: ROM:FF810160j
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| 65 | "LDR R0, =0xFF81021C\n"
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| 66 | "MOV R1, #0\n"
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| 67 | "LDR R3, =0xFF810254\n"
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| 68 |
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| 69 | "loc_FF8101B0:\n" // ; CODE XREF: ROM:FF8101BCj
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| 70 | "CMP R0, R3\n"
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| 71 | "LDRCC R2, [R0],#4\n"
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| 72 | "STRCC R2, [R1],#4\n"
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| 73 | "BCC loc_FF8101B0\n"
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| 74 | "LDR R0, =0xFF810254\n"
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| 75 | "MOV R1, #0x4B0\n"
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| 76 | "LDR R3, =0xFF810468\n"
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| 77 |
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| 78 | "loc_FF8101CC:\n" // ; CODE XREF: ROM:FF8101D8j
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| 79 | "CMP R0, R3\n"
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| 80 | "LDRCC R2, [R0],#4\n"
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| 81 | "STRCC R2, [R1],#4\n"
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| 82 | "BCC loc_FF8101CC\n"
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| 83 | "MOV R0, #0xD2\n"
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| 84 | "MSR CPSR_cxsf, R0\n"
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| 85 | "MOV SP, #0x1000\n"
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| 86 | "MOV R0, #0xD3\n"
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| 87 | "MSR CPSR_cxsf, R0\n"
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| 88 | "MOV SP, #0x1000\n"
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| 89 | // "LDR R0, loc_FF810210\n" // =0x6C4\n" //loc_FF810210\n"
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| 90 | "LDR R0, =0x6C4\n" // +
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| 91 | "LDR R2, =0xEEEEEEEE\n"
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| 92 | "MOV R3, #0x1000\n"
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| 93 |
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| 94 | "loc_FF810200:\n" // ; CODE XREF: ROM:FF810208j
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| 95 | "CMP R0, R3\n"
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| 96 | "STRCC R2, [R0],#4\n"
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| 97 | "BCC loc_FF810200\n"
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| 98 | "BL sub_FF810FA0_my\n"
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| 99 | );
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| 100 | // Working
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| 101 | } //#fe
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| 102 |
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| 103 | void __attribute__((naked,noinline)) sub_FF810FA0_my() { //#fs
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| 104 | asm volatile (
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| 105 | "STR LR, [SP,#-4]!\n"
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| 106 | "SUB SP, SP, #0x74\n"
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| 107 | "MOV R0, SP\n"
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| 108 | "MOV R1, #0x74\n"
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| 109 | "BL sub_FFAACA58\n"
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| 110 | "MOV R0, #0x53000\n"
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| 111 | "STR R0, [SP,#0x74-0x70]\n"
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| 112 | //"LDR R0, =0xCBC48\n"
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| 113 | "LDR R0, =new_sa\n"
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| 114 | "LDR R0, [R0]\n"
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| 115 | "LDR R2, =0x279C00\n"
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| 116 | "LDR R1, =0x272968\n"
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| 117 | "STR R0, [SP,#0x74-0x6C]\n"
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| 118 | "SUB R0, R1, R0\n"
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| 119 | "ADD R3, SP, #0x74-0x68\n"
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| 120 | "STR R2, [SP,#0x74-0x74]\n"
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| 121 | "STMIA R3, {R0-R2}\n"
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| 122 | "MOV R0, #0x22\n"
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| 123 | "STR R0, [SP,#0x74-0x5C]\n"
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| 124 | "MOV R0, #0x68\n"
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| 125 | "STR R0, [SP,#0x74-0x58]\n"
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| 126 | "LDR R0, =0x19B\n"
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| 127 | "MOV R1, #0x64\n"
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| 128 | //"STRD R0, [SP,#0x74-0x54]\n"
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| 129 | "STR R0, [SP,#0x74-0x54]\n"
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| 130 | "STR R1, [SP,#0x74-0x50]\n"
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| 131 | "MOV R0, #0x78\n"
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| 132 | //"STRD R0, [SP,#0x74-0x4C]\n"
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| 133 | "STR R0, [SP,#0x74-0x4C]\n"
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| 134 | "STR R1, [SP,#0x74-0x48]\n"
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| 135 | "MOV R0, #0\n"
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| 136 | "STR R0, [SP,#0x74-0x44]\n"
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| 137 | "STR R0, [SP,#0x74-0x40]\n"
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| 138 | "MOV R0, #0x10\n"
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| 139 | "STR R0, [SP,#0x74-0x18]\n"
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| 140 | "MOV R0, #0x800\n"
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| 141 | "STR R0, [SP,#0x74-0x14]\n"
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| 142 | "MOV R0, #0xA0\n"
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| 143 | "STR R0, [SP,#0x74-0x10]\n"
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| 144 | "MOV R0, #0x280\n"
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| 145 | "STR R0, [SP,#0x74-0xC]\n"
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| 146 | //"LDR R1, =0xFF814DA4\n"
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| 147 | "LDR R1, =uHwSetup_my\n"
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| 148 | "MOV R0, SP\n"
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| 149 | "MOV R2, #0\n"
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| 150 | "BL sub_FF812D58\n"
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| 151 |
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| 152 | "ADD SP, SP, #0x74\n"
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| 153 | "LDR PC, [SP],#4\n"
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| 154 | );
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| 155 | // Working
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| 156 | }; //#fe
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| 157 |
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| 158 | // Extracted method: uHwSetup (FF814DA4)
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| 159 | void __attribute__((naked,noinline)) uHwSetup_my() { //#fs
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| 160 | asm volatile (
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| 161 | "STMFD SP!, {R4,LR}\n"
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| 162 | "BL sub_FF81094C\n"
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| 163 | "BL sub_FF819664\n"
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| 164 | "CMP R0, #0\n"
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| 165 | "LDRLT R0, =0xFF814EB8\n" // ; "dmSetup"\n"
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| 166 | "BLLT sub_FF814E98\n"
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| 167 | "BL sub_FF8149C8\n"
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| 168 | "CMP R0, #0\n"
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| 169 | "LDRLT R0, =0xFF814EC0\n" // ; "termDriverInit"\n"
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| 170 | "BLLT sub_FF814E98\n"
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| 171 | "LDR R0, =0xFF814ED0\n" // ; "/_term"\n"
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| 172 | "BL sub_FF814AB4\n"
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| 173 | "CMP R0, #0\n"
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| 174 | "LDRLT R0, =0xFF814ED8\n" // ; "termDeviceCreate"\n"
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| 175 | "BLLT sub_FF814E98\n"
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| 176 | "LDR R0, =0xFF814ED0\n" // ; "/_term"\n"
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| 177 | "BL sub_FF813564\n"
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| 178 | "CMP R0, #0\n"
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| 179 | "LDRLT R0, =0xFF814EEC\n" // ; "stdioSetup"\n"
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| 180 | "BLLT sub_FF814E98\n"
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| 181 | "BL sub_FF8191EC\n"
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| 182 | "CMP R0, #0\n"
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| 183 | "LDRLT R0, =0xFF814EF8\n" // ; "stdlibSetup"\n"
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| 184 | "BLLT sub_FF814E98\n"
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| 185 | "BL sub_FF8114B8\n"
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| 186 | "CMP R0, #0\n"
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| 187 | "LDRLT R0, =0xFF814F04\n" // ; "armlib_setup"\n"
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| 188 | "BLLT sub_FF814E98\n"
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| 189 | "LDMFD SP!, {R4,LR}\n"
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| 190 | "B taskcreate_Startup_my\n"
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| 191 | );
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| 192 | }; //#fe
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| 193 |
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| 194 | // Extracted method: taskcreate_Startup (FF81CCBC)
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| 195 | void __attribute__((naked,noinline)) taskcreate_Startup_my() { //#fs
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| 196 | asm volatile (
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| 197 | "STMFD SP!, {R3-R5,LR}\n"
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| 198 | "BL sub_FF821C00\n"
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| 199 | "BL sub_FF829EF0\n"
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| 200 | "CMP R0, #0\n"
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| 201 | "BNE loc_FF81CCFC\n"
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| 202 | "LDR R4, =0xC0220000\n"
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| 203 | "LDR R0, [R4,#0xFC]\n"
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| 204 | "TST R0, #1\n"
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| 205 | "MOVEQ R0, #0x12C\n"
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| 206 | "BLEQ sub_FF828400\n"
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| 207 | "BL sub_FF821BFC\n"
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| 208 | "CMP R0, #0\n"
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| 209 | "BNE loc_FF81CCFC\n"
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| 210 | "MOV R0, #0x44\n"
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| 211 | "STR R0, [R4,#0x4C]\n"
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| 212 |
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| 213 | "loc_FF81CCF8:\n" // ; CODE XREF: taskcreate_Startup:loc_FF81CCF8j
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| 214 | "B loc_FF81CCF8\n"
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| 215 |
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| 216 | "loc_FF81CCFC:\n" // ; CODE XREF: taskcreate_Startup+10j
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| 217 | "BL sub_FF821C08\n"
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| 218 | "BL sub_FF821C04\n"
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| 219 | "BL sub_FF828278\n"
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| 220 | "LDR R1, =0x2CE000\n"
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| 221 | "MOV R0, #0\n"
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| 222 | "BL sub_FF8284C0\n"
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| 223 | "BL sub_FF82846C\n"
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| 224 | "MOV R3, #0\n"
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| 225 | "STR R3, [SP,#0x10-0x10]\n"
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| 226 | "LDR R3, =task_Startup_my\n" //task_Startup
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| 227 | "MOV R2, #0\n"
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| 228 | "MOV R1, #0x19\n"
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| 229 | "LDR R0, =0xFF81CD44\n" // ; "Startup"\n"
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| 230 | "BL sub_FF81B818\n"
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| 231 | "MOV R0, #0\n"
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| 232 | //"LDMFD SP!, {R3-R5,PC}\n"
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| 233 | "LDMFD SP!, {ip, pc}\n"
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| 234 | );
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| 235 | }; //#fe
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| 236 |
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| 237 | // Extracted method: task_Startup (FF81CC60)
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| 238 | void __attribute__((naked,noinline)) task_Startup_my() { //#fs
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| 239 | asm volatile (
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| 240 | "STMFD SP!, {R4,LR}\n"
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| 241 | "BL sub_FF81516C\n" // clockSave
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| 242 | "BL sub_FF822D60\n"
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| 243 | "BL sub_FF81FE00\n"
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| 244 | //"BL sub_FF829F30\n" // hl??
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| 245 | "BL sub_FF82A0F8\n"
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| 246 | //"BL sub_FF829FB8\n" // StartDiskBoot
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| 247 | );
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| 248 |
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| 249 | CreateTask_spytask();
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| 250 |
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| 251 | asm volatile (
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| 252 | "BL sub_FF82A2AC\n"
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| 253 | "BL sub_FF82A148\n" // good question.... equiv of touch_wheel.c ?
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| 254 | "BL sub_FF8277B8\n"
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| 255 | "BL sub_FF82A2B0\n"
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| 256 | );
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| 257 |
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| 258 | // CreateTask_PhySw();
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| 259 |
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| 260 | asm volatile (
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| 261 | "BL sub_FF821B10\n" // taskcreate_PhySw
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| 262 | "BL sub_FF824CC8\n" // task_ShootSeqTask
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| 263 | "BL sub_FF82A2C8\n"
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| 264 | //"BL sub_FF81FB20\n" // nullsub_2
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| 265 | "BL sub_FF820FCC\n"
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| 266 | "BL sub_FF829CB8\n" // taskcreate_Bye
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| 267 | "BL sub_FF821640\n"
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| 268 | "BL sub_FF820EBC\n" // taskcreate_TempCheck\n"
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| 269 | "BL sub_FF82AD6C\n"
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| 270 | "BL sub_FF820E78\n"
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| 271 | //"LDMFD SP!, {R4,LR}\n"
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| 272 | "BL sub_FF815070\n"
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| 273 | "LDMFD SP!, {R4,PC}\n"
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| 274 | );
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| 275 | }; //#fe
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| 276 |
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| 277 | void CreateTask_spytask() { //#fs
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| 278 | _CreateTask("SpyTask", 0x19, 0x2000, core_spytask, 0);
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| 279 | }; //#fe
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| 280 |
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| 281 | //void CreateTask_PhySw() { //#fs
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| 282 | // _CreateTask("PhySw", 0x18, 0x800, mykbd_task, 0);
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| 283 | //}; //#fe
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| 284 |
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| 285 |
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| 286 | // -----------------
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| 287 | // SDHC-Boot-Support
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| 288 | // -----------------
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| 289 |
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| 290 | // 0xFF8791d0
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| 291 | void __attribute__((naked,noinline)) init_file_modules_task() { //#fs
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| 292 | asm volatile (
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| 293 | "STMFD SP!, {R4-R6,LR}\n"
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| 294 | "BL sub_FF86DAE8\n"
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| 295 | "LDR R5, =0x5006\n"
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| 296 | "MOVS R4, R0\n"
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| 297 | "MOVNE R1, #0\n"
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| 298 | "MOVNE R0, R5\n"
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| 299 | "BLNE _PostLogicalEventToUI\n"
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| 300 | "BL sub_FF86DB14_my\n"
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| 301 | "BL core_spytask_can_start\n" // CHDK: Set "it's-safe-to-start" -flag for spytask
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| 302 | "CMP R4, #0\n"
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| 303 | "MOVEQ R0, R5\n"
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| 304 | "LDMEQFD SP!, {R4-R6,LR}\n"
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| 305 | "MOVEQ R1, #0\n"
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| 306 | "BEQ _PostLogicalEventToUI\n"
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| 307 | "LDMFD SP!, {R4-R6,PC}\n"
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| 308 | );
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| 309 | }; //#fe
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| 310 |
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| 311 | void __attribute__((naked,noinline)) sub_FF86DB14_my() { //#fs
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| 312 | asm volatile (
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| 313 | "STMFD SP!, {R4,LR}\n"
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| 314 | "BL sub_FF84F174_my\n" // continue to SDHC-hook here
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| 315 | "LDR R4, =0x57D0\n"
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| 316 | "LDR R0, [R4,#4]\n"
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| 317 | "CMP R0, #0\n"
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| 318 | "BNE loc_FF86DB44\n"
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| 319 | "BL sub_FF881C08\n"
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| 320 | "BL sub_FF9055FC\n"
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| 321 | "BL sub_FF881C08\n"
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| 322 | "BL sub_FF84CB64\n"
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| 323 | "BL sub_FF881C18\n"
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| 324 | "BL sub_FF9056C8\n"
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| 325 |
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| 326 | "loc_FF86DB44:\n" // ; CODE XREF: sub_FF86DB14+14j
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| 327 | "MOV R0, #1\n"
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| 328 | "STR R0, [R4]\n"
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| 329 | "LDMFD SP!, {R4,PC}\n"
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| 330 | );
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| 331 | }; //#fe
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| 332 |
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| 333 | void __attribute__((naked,noinline)) sub_FF84F174_my() { //#fs
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| 334 | asm volatile (
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| 335 | "STMFD SP!, {R4-R6,LR}\n"
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| 336 | "MOV R6, #0\n"
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| 337 | "MOV R0, R6\n"
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| 338 | "BL sub_FF84EC34\n"
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| 339 | "LDR R4, =0x11890\n"
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| 340 | "MOV R5, #0\n"
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| 341 | "LDR R0, [R4,#0x38]\n"
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| 342 | "BL sub_FF84F668\n"
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| 343 | "CMP R0, #0\n"
|
|---|
| 344 | "LDREQ R0, =0x29D4\n"
|
|---|
| 345 | "STREQ R5, [R0,#0x10]\n"
|
|---|
| 346 | "STREQ R5, [R0,#0x14]\n"
|
|---|
| 347 | "STREQ R5, [R0,#0x18]\n"
|
|---|
| 348 | "MOV R0, R6\n"
|
|---|
| 349 | "BL sub_FF84EC74\n" //uMounter (u=unknown, just to prevent misunderstandings)
|
|---|
| 350 | "MOV R0, R6\n"
|
|---|
| 351 | "BL sub_FF84EFB0_my\n" // continue to SDHC-hook here!
|
|---|
| 352 | "MOV R5, R0\n"
|
|---|
| 353 | "MOV R0, R6\n"
|
|---|
| 354 | "BL sub_FF84F01C\n"
|
|---|
| 355 | "LDR R1, [R4,#0x3C]\n"
|
|---|
| 356 | "AND R2, R5, R0\n"
|
|---|
| 357 | "CMP R1, #0\n"
|
|---|
| 358 | "MOV R0, #0\n"
|
|---|
| 359 | "MOVEQ R0, #0x80000001\n"
|
|---|
| 360 | "BEQ loc_FF84F208\n"
|
|---|
| 361 | "LDR R3, [R4,#0x2C]\n"
|
|---|
| 362 | "CMP R3, #2\n"
|
|---|
| 363 | "MOVEQ R0, #4\n"
|
|---|
| 364 | "CMP R1, #5\n"
|
|---|
| 365 | "ORRNE R0, R0, #1\n"
|
|---|
| 366 | "BICEQ R0, R0, #1\n"
|
|---|
| 367 | "CMP R2, #0\n"
|
|---|
| 368 | "BICEQ R0, R0, #2\n"
|
|---|
| 369 | "ORREQ R0, R0, #0x80000000\n"
|
|---|
| 370 | "BICNE R0, R0, #0x80000000\n"
|
|---|
| 371 | "ORRNE R0, R0, #2\n"
|
|---|
| 372 |
|
|---|
| 373 | "loc_FF84F208:\n" // ; CODE XREF: sub_FF84F174+64j
|
|---|
| 374 | "STR R0, [R4,#0x40]\n"
|
|---|
| 375 | "LDMFD SP!, {R4-R6,PC}\n"
|
|---|
| 376 | );
|
|---|
| 377 | }; //#fe
|
|---|
| 378 |
|
|---|
| 379 | void __attribute__((naked,noinline)) sub_FF84EFB0_my() { //#fs
|
|---|
| 380 | asm volatile (
|
|---|
| 381 | "STMFD SP!, {R4-R6,LR}\n"
|
|---|
| 382 | "LDR R5, =0x29D4\n"
|
|---|
| 383 | "MOV R6, R0\n"
|
|---|
| 384 | "LDR R0, [R5,#0x14]\n"
|
|---|
| 385 | "CMP R0, #0\n"
|
|---|
| 386 | "MOVNE R0, #1\n"
|
|---|
| 387 | "LDMNEFD SP!, {R4-R6,PC}\n"
|
|---|
| 388 | "MOV R0, #0x17\n"
|
|---|
| 389 | "MUL R1, R0, R6\n"
|
|---|
| 390 | "LDR R0, =0x11890\n"
|
|---|
| 391 | "ADD R4, R0, R1,LSL#2\n"
|
|---|
| 392 | "LDR R0, [R4,#0x38]\n"
|
|---|
| 393 | "MOV R1, R6\n"
|
|---|
| 394 | "BL sub_FF84ED40_my\n" //continue to SDHC-hook here
|
|---|
| 395 | "CMP R0, #0\n"
|
|---|
| 396 | "LDMEQFD SP!, {R4-R6,PC}\n"
|
|---|
| 397 | "LDR R0, [R4,#0x38]\n"
|
|---|
| 398 | "MOV R1, R6\n"
|
|---|
| 399 | "BL sub_FF84EEA8\n"
|
|---|
| 400 | "CMP R0, #0\n"
|
|---|
| 401 | "LDMEQFD SP!, {R4-R6,PC}\n"
|
|---|
| 402 | "MOV R0, R6\n"
|
|---|
| 403 | "BL sub_FF84E83C\n"
|
|---|
| 404 | "CMP R0, #0\n"
|
|---|
| 405 | "MOVNE R1, #1\n"
|
|---|
| 406 | "STRNE R1, [R5,#0x14]\n"
|
|---|
| 407 | "LDMFD SP!, {R4-R6,PC}\n"
|
|---|
| 408 | );
|
|---|
| 409 | }; //#fe
|
|---|
| 410 |
|
|---|
| 411 |
|
|---|
| 412 |
|
|---|
| 413 | void __attribute__((naked,noinline)) sub_FF84ED40_my() { //#fs ; Partition t
|
|---|
| 414 | asm volatile (
|
|---|
| 415 | "STMFD SP!, {R4-R8,LR}\n"
|
|---|
| 416 | "MOV R8, R0\n"
|
|---|
| 417 | "MOV R0, #0x17\n"
|
|---|
| 418 | "MUL R1, R0, R1\n"
|
|---|
| 419 | "LDR R0, =0x11890\n"
|
|---|
| 420 | "MOV R6, #0\n"
|
|---|
| 421 | "ADD R7, R0, R1,LSL#2\n"
|
|---|
| 422 | "LDR R0, [R7,#0x3C]\n"
|
|---|
| 423 | "MOV R5, #0\n"
|
|---|
| 424 | "CMP R0, #6\n"
|
|---|
| 425 | "ADDLS PC, PC, R0,LSL#2\n"
|
|---|
| 426 | "B loc_FF84EE8C\n"
|
|---|
| 427 |
|
|---|
| 428 |
|
|---|
| 429 | "loc_FF84ED70:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 430 | "B loc_FF84EDA4\n"
|
|---|
| 431 |
|
|---|
| 432 |
|
|---|
| 433 | "loc_FF84ED74:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 434 | "B loc_FF84ED8C\n"
|
|---|
| 435 |
|
|---|
| 436 |
|
|---|
| 437 | "loc_FF84ED78:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 438 | "B loc_FF84ED8C\n"
|
|---|
| 439 |
|
|---|
| 440 |
|
|---|
| 441 | "loc_FF84ED7C:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 442 | "B loc_FF84ED8C\n"
|
|---|
| 443 |
|
|---|
| 444 |
|
|---|
| 445 | "loc_FF84ED80:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 446 | "B loc_FF84ED8C\n"
|
|---|
| 447 |
|
|---|
| 448 |
|
|---|
| 449 | "loc_FF84ED84:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 450 | "B loc_FF84EE84\n"
|
|---|
| 451 |
|
|---|
| 452 |
|
|---|
| 453 | "loc_FF84ED88:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 454 | "B loc_FF84ED8C\n"
|
|---|
| 455 |
|
|---|
| 456 | "loc_FF84ED8C:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 457 |
|
|---|
| 458 |
|
|---|
| 459 | "MOV R2, #0\n"
|
|---|
| 460 | "MOV R1, #0x200\n"
|
|---|
| 461 | "MOV R0, #3\n"
|
|---|
| 462 | "BL sub_FF867C94\n"
|
|---|
| 463 | "MOVS R4, R0\n"
|
|---|
| 464 | "BNE loc_FF84EDAC\n"
|
|---|
| 465 |
|
|---|
| 466 | "loc_FF84EDA4:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 467 |
|
|---|
| 468 |
|
|---|
| 469 | "MOV R0, #0\n"
|
|---|
| 470 | "LDMFD SP!, {R4-R8,PC}\n"
|
|---|
| 471 |
|
|---|
| 472 |
|
|---|
| 473 | "loc_FF84EDAC:\n" // ; CODE XREF: sub_FF84ED40+60j
|
|---|
| 474 | "LDR R12, [R7,#0x4C]\n"
|
|---|
| 475 | "MOV R3, R4\n"
|
|---|
| 476 | "MOV R2, #1\n"
|
|---|
| 477 | "MOV R1, #0\n"
|
|---|
| 478 | "MOV R0, R8\n"
|
|---|
| 479 | //"BLX R12 //\n"
|
|---|
| 480 | "MOV LR, PC\n"
|
|---|
| 481 | "MOV PC, R12\n"
|
|---|
| 482 | "CMP R0, #1\n"
|
|---|
| 483 | "BNE loc_FF84EDD8\n"
|
|---|
| 484 | "MOV R0, #3\n"
|
|---|
| 485 | "BL sub_FF867DD4\n"
|
|---|
| 486 | "B loc_FF84EDA4\n"
|
|---|
| 487 |
|
|---|
| 488 |
|
|---|
| 489 | "loc_FF84EDD8:\n" // ; CODE XREF: sub_FF84ED40+88j
|
|---|
| 490 | "MOV R0, R8\n"
|
|---|
| 491 | "BL sub_FF922E24\n"
|
|---|
| 492 |
|
|---|
| 493 | "MOV R1, R4\n" // pointer to MBR in R1
|
|---|
| 494 | "BL mbr_read_dryos\n" // total sectors count in R0 before and after call
|
|---|
| 495 |
|
|---|
| 496 | // Start of DataGhost's FAT32 autodetection code
|
|---|
| 497 | // Policy: If there is a partition which has type W95 FAT32, use the first one of those for image storage
|
|---|
| 498 | // According to the code below, we can use R1, R2, R3 and R12.
|
|---|
| 499 | // LR wasn't really used anywhere but for storing a part of the partition signature. This is the only thing
|
|---|
| 500 | // that won't work with an offset, but since we can load from LR+offset into LR, we can use this to do that :)
|
|---|
| 501 | "MOV R12, R4\n" // Copy the MBR start address so we have something to work with
|
|---|
| 502 | "MOV LR, R4\n" // Save old offset for MBR signature
|
|---|
| 503 | "MOV R1, #1\n" // Note the current partition number
|
|---|
| 504 | "B dg_sd_fat32_enter\n" // We actually need to check the first partition as well, no increments yet!
|
|---|
| 505 | "dg_sd_fat32:\n"
|
|---|
| 506 | "CMP R1, #4\n" // Did we already see the 4th partition?
|
|---|
| 507 | "BEQ dg_sd_fat32_end\n" // Yes, break. We didn't find anything, so don't change anything.
|
|---|
| 508 | "ADD R12, R12, #0x10\n" // Second partition
|
|---|
| 509 | "ADD R1, R1, #1\n" // Second partition for the loop
|
|---|
| 510 | "dg_sd_fat32_enter:\n"
|
|---|
| 511 | "LDRB R2, [R12, #0x1BE]\n" // Partition status
|
|---|
| 512 | "LDRB R3, [R12, #0x1C2]\n" // Partition type (FAT32 = 0xB)
|
|---|
| 513 | "CMP R3, #0xB\n" // Is this a FAT32 partition?
|
|---|
| 514 | "CMPNE R3, #0xC\n" // Not 0xB, is it 0xC (FAT32 LBA) then?
|
|---|
| 515 | "BNE dg_sd_fat32\n" // No, it isn't.
|
|---|
| 516 | "CMP R2, #0x00\n" // It is, check the validity of the partition type
|
|---|
| 517 | "CMPNE R2, #0x80\n"
|
|---|
| 518 | "BNE dg_sd_fat32\n" // Invalid, go to next partition
|
|---|
| 519 | // This partition is valid, it's the first one, bingo!
|
|---|
| 520 | "MOV R4, R12\n" // Move the new MBR offset for the partition detection.
|
|---|
| 521 |
|
|---|
| 522 | "dg_sd_fat32_end:\n"
|
|---|
| 523 | // End of DataGhost's FAT32 autodetection code
|
|---|
| 524 | "LDRB R1, [R4,#0x1C9]\n"
|
|---|
| 525 | "LDRB R3, [R4,#0x1C8]\n"
|
|---|
| 526 | "LDRB R12, [R4,#0x1CC]\n"
|
|---|
| 527 | "MOV R1, R1,LSL#24\n"
|
|---|
| 528 | "ORR R1, R1, R3,LSL#16\n"
|
|---|
| 529 | "LDRB R3, [R4,#0x1C7]\n"
|
|---|
| 530 | "LDRB R2, [R4,#0x1BE]\n"
|
|---|
| 531 | //"LDRB LR, [R4,#0x1FF]\n"
|
|---|
| 532 | "ORR R1, R1, R3,LSL#8\n"
|
|---|
| 533 | "LDRB R3, [R4,#0x1C6]\n"
|
|---|
| 534 | "CMP R2, #0\n"
|
|---|
| 535 | "CMPNE R2, #0x80\n"
|
|---|
| 536 | "ORR R1, R1, R3\n"
|
|---|
| 537 | "LDRB R3, [R4,#0x1CD]\n"
|
|---|
| 538 | "MOV R3, R3,LSL#24\n"
|
|---|
| 539 | "ORR R3, R3, R12,LSL#16\n"
|
|---|
| 540 | "LDRB R12, [R4,#0x1CB]\n"
|
|---|
| 541 | "ORR R3, R3, R12,LSL#8\n"
|
|---|
| 542 | "LDRB R12, [R4,#0x1CA]\n"
|
|---|
| 543 | "ORR R3, R3, R12\n"
|
|---|
| 544 | //"LDRB R12, [R4,#0x1FE]\n"
|
|---|
| 545 |
|
|---|
| 546 | "LDRB R12, [LR,#0x1FE]\n"
|
|---|
| 547 | "LDRB LR, [LR,#0x1FF]\n"
|
|---|
| 548 |
|
|---|
| 549 | "MOV R4, #0\n"
|
|---|
| 550 | "BNE loc_FF84EE60\n"
|
|---|
| 551 | "CMP R0, R1\n"
|
|---|
| 552 | "BCC loc_FF84EE60\n"
|
|---|
| 553 | "ADD R2, R1, R3\n"
|
|---|
| 554 | "CMP R2, R0\n"
|
|---|
| 555 | "CMPLS R12, #0x55\n"
|
|---|
| 556 | "CMPEQ LR, #0xAA\n"
|
|---|
| 557 | "MOVEQ R6, R1\n"
|
|---|
| 558 | "MOVEQ R5, R3\n"
|
|---|
| 559 | "MOVEQ R4, #1\n"
|
|---|
| 560 |
|
|---|
| 561 | "loc_FF84EE60:\n" // ; CODE XREF: sub_FF84ED40+F8j
|
|---|
| 562 |
|
|---|
| 563 | "MOV R0, #3\n"
|
|---|
| 564 | "BL sub_FF867DD4\n"
|
|---|
| 565 | "CMP R4, #0\n"
|
|---|
| 566 | "BNE loc_FF84EE98\n"
|
|---|
| 567 | "MOV R6, #0\n"
|
|---|
| 568 | "MOV R0, R8\n"
|
|---|
| 569 | "BL sub_FF922E24\n"
|
|---|
| 570 | "MOV R5, R0\n"
|
|---|
| 571 | "B loc_FF84EE98\n"
|
|---|
| 572 |
|
|---|
| 573 |
|
|---|
| 574 | "loc_FF84EE84:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 575 |
|
|---|
| 576 |
|
|---|
| 577 | "MOV R5, #0x40\n"
|
|---|
| 578 | "B loc_FF84EE98\n"
|
|---|
| 579 |
|
|---|
| 580 |
|
|---|
| 581 | "loc_FF84EE8C:\n" // ; CODE XREF: sub_FF84ED40+28j
|
|---|
| 582 |
|
|---|
| 583 |
|
|---|
| 584 | "MOV R1, #0x374\n"
|
|---|
| 585 | "LDR R0, =0xFF84ED34\n" // aMounter_c ; "Mounter.c"\n"
|
|---|
| 586 | "BL _DebugAssert\n"
|
|---|
| 587 |
|
|---|
| 588 | "loc_FF84EE98:\n" // ; CODE XREF: sub_FF84ED40+12Cj
|
|---|
| 589 |
|
|---|
| 590 | "STR R6, [R7,#0x44]!\n"
|
|---|
| 591 | "MOV R0, #1\n"
|
|---|
| 592 | "STR R5, [R7,#4]\n"
|
|---|
| 593 | "LDMFD SP!, {R4-R8,PC}\n"
|
|---|
| 594 |
|
|---|
| 595 | );
|
|---|
| 596 | }; //#fe
|
|---|
| 597 |
|
|---|
| 598 | // Extracted method: sub_FF842A44 + 240
|
|---|
| 599 | // Extracted method: sub_FF842C84
|
|---|
| 600 | void __attribute__((naked,noinline)) jogdial_task_my()
|
|---|
| 601 | {
|
|---|
| 602 | asm volatile (
|
|---|
| 603 | "STMFD SP!, {R3-R11,LR}\n"
|
|---|
| 604 | "BL sub_FF842e34\n" // LOCATION: JogDial.c:14
|
|---|
| 605 | "LDR R11, =0x80000B01\n"
|
|---|
| 606 | "LDR R8, =0xffab07cc\n" // HL
|
|---|
| 607 | "LDR R7, =0xC0240000\n" // HL
|
|---|
| 608 | "LDR R6, =0x22A0\n" // HL
|
|---|
| 609 | "MOV R9, #1\n"
|
|---|
| 610 | "MOV R10, #0\n"
|
|---|
| 611 |
|
|---|
| 612 | "loc_FF842CA4:\n"
|
|---|
| 613 | "LDR R3, =0x1A1\n" // HL
|
|---|
| 614 | "LDR R0, [R6,#0xC]\n"
|
|---|
| 615 | "LDR R2, =0xFF842EDC\n" // HL?, "JogDial.c"
|
|---|
| 616 | "MOV R1, #0\n"
|
|---|
| 617 | "BL sub_FF81BBD8\n" // HL
|
|---|
| 618 | //"MOV R0, #40\n"
|
|---|
| 619 | "MOV R0, #40\n" // +
|
|---|
| 620 | "BL _SleepTask\n" // LOCATION: KerSys.c:0
|
|---|
| 621 |
|
|---|
| 622 | //------------------ added code ---------------------
|
|---|
| 623 | "labelA:\n"
|
|---|
| 624 | "LDR R0, =jogdial_stopped\n"
|
|---|
| 625 | "LDR R0, [R0]\n"
|
|---|
| 626 | "CMP R0, #1\n"
|
|---|
| 627 | "BNE labelB\n"
|
|---|
| 628 | "MOV R0, #40\n"
|
|---|
| 629 | "BL _SleepTask\n"
|
|---|
| 630 | "B labelA\n"
|
|---|
| 631 | "labelB:\n"
|
|---|
| 632 | //------------------ original code ------------------
|
|---|
| 633 |
|
|---|
| 634 | "LDR R0, [R7,#0x104]\n"
|
|---|
| 635 | "MOV R0, R0,ASR#16\n"
|
|---|
| 636 | "STRH R0, [R6]\n"
|
|---|
| 637 | "LDRSH R2, [R6,#2]\n"
|
|---|
| 638 | "SUB R1, R0, R2\n"
|
|---|
| 639 | "CMP R1, #0\n"
|
|---|
| 640 | "BEQ loc_FF842D68\n"
|
|---|
| 641 | "MOV R5, R1\n"
|
|---|
| 642 | "RSBLT R5, R5, #0\n"
|
|---|
| 643 | "MOVLE R4, #0\n"
|
|---|
| 644 | "MOVGT R4, #1\n"
|
|---|
| 645 | "CMP R5, #0xFF\n"
|
|---|
| 646 | "BLS loc_FF842D1C\n"
|
|---|
| 647 | "CMP R1, #0\n"
|
|---|
| 648 | "RSBLE R1, R2, #0xFF\n"
|
|---|
| 649 | "ADDLE R1, R1, #0x7F00\n"
|
|---|
| 650 | "ADDLE R0, R1, R0\n"
|
|---|
| 651 | "RSBGT R0, R0, #0xFF\n"
|
|---|
| 652 | "ADDGT R0, R0, #0x7F00\n"
|
|---|
| 653 | "ADDGT R0, R0, R2\n"
|
|---|
| 654 | "ADD R5, R0, #0x8000\n"
|
|---|
| 655 | "ADD R5, R5, #1\n"
|
|---|
| 656 | "EOR R4, R4, #1\n"
|
|---|
| 657 |
|
|---|
| 658 | "loc_FF842D1C:\n"
|
|---|
| 659 | "LDR R0, [R6,#0x14]\n"
|
|---|
| 660 | "CMP R0, #0\n"
|
|---|
| 661 | "BEQ loc_FF842D60\n"
|
|---|
| 662 | "LDR R0, [R6,#0x1C]\n"
|
|---|
| 663 | "CMP R0, #0\n"
|
|---|
| 664 | "BEQ loc_FF842D48\n"
|
|---|
| 665 | "LDR R1, [R8,R4,LSL#2]\n"
|
|---|
| 666 | "CMP R1, R0\n"
|
|---|
| 667 | "BEQ loc_FF842D50\n"
|
|---|
| 668 | "LDR R0, =0xB01\n"
|
|---|
| 669 | "BL sub_FF875370\n"
|
|---|
| 670 |
|
|---|
| 671 | "loc_FF842D48:\n"
|
|---|
| 672 | "MOV R0, R11\n"
|
|---|
| 673 | "BL sub_FF875370\n"
|
|---|
| 674 |
|
|---|
| 675 | "loc_FF842D50:\n"
|
|---|
| 676 | "LDR R0, [R8,R4,LSL#2]\n"
|
|---|
| 677 | "MOV R1, R5\n"
|
|---|
| 678 | "STR R0, [R6,#0x1C]\n"
|
|---|
| 679 | "BL sub_FF8752b8\n"
|
|---|
| 680 |
|
|---|
| 681 | "loc_FF842D60:\n"
|
|---|
| 682 | "LDRH R0, [R6]\n"
|
|---|
| 683 | "STRH R0, [R6,#2]\n"
|
|---|
| 684 |
|
|---|
| 685 | "loc_FF842D68:\n"
|
|---|
| 686 | "STR R10, [R7,#0x100]\n"
|
|---|
| 687 | "STR R9, [R7,#0x108]\n"
|
|---|
| 688 | "LDR R0, [R6,#0x10]\n"
|
|---|
| 689 | "CMP R0, #0\n"
|
|---|
| 690 | "BLNE _SleepTask\n" // LOCATION: KerSys.c:0
|
|---|
| 691 | "B loc_FF842CA4\n"
|
|---|
| 692 | );
|
|---|
| 693 | }
|
|---|
