root/platform/a800/sub/100b/filewrite.c

DEFINITIONS

1. filewritetask
2. sub_FFDFDA5C_my
3. sub_FFDFDBA4_my
4. sub_FFDFD60C_my

   1 /*
   2  * filewrite.c - auto-generated by CHDK code_gen.
   3  */
   4 #include "lolevel.h"
   5 #include "platform.h"
   7 typedef struct {
   8     unsigned int address;
   9     unsigned int length;
  10 } cam_ptp_data_chunk; //camera specific structure
  12 #define MAX_CHUNKS_FOR_FWT 7 // filewritetask is prepared for this many chunks
  13 /*
  14  * fwt_data_struct: defined here as it's camera dependent
  15  * unneeded members are designated with unkn
  16  * file_offset, full_size, seek_flag only needs to be defined for DryOS>=r50 generation cameras
  17  * cameras with possible multipass JPEG writes need oflags
  18  * pdc is always required
  19  * name is not currently used
  20  */
  22 typedef struct
  23 {
  24     int unkn1[2];
  25     int oflags;
  26     int unkn2[2];
cam_ptp_data_chunk pdc[MAX_CHUNKS_FOR_FWT];
  28     int unkn6;
  29     char name[32];
  30 } fwt_data_struct;
  32 #define OFLAG_NOFLUSH 0x8000
  34 #include "../../../generic/filewrite.c"
  36 /*************************************************************/
  37 //** filewritetask @ 0xFFDFD780 - 0xFFDFD860, length=57
  38 void __attribute__((naked,noinline)) filewritetask() {
  39 asm volatile (
  40 "    STMFD   SP!, {R1-R5,LR} \n"
  41 "    LDR     R5, =0x8A90 \n"
  43 "loc_FFDFD788:\n"
  44 "    MOV     R2, #0 \n"
  45 "    LDR     R0, [R5, #0x10] \n"
  46 "    ADD     R1, SP, #8 \n"
  47 "    BL      sub_FFC2905C /*_ReceiveMessageQueue*/ \n"
  48 "    CMP     R0, #0 \n"
  49 "    LDRNE   R1, =0x33F \n"
  50 "    LDRNE   R0, =0xFFDFD874 /*'dwFWrite.c'*/ \n"
  51 "    BLNE    _DebugAssert \n"
  52 "    LDR     R0, [SP, #8] \n"
  53 "    LDR     R1, [R0] \n"
  54 "    CMP     R1, #0xA \n"
  55 "    ADDCC   PC, PC, R1, LSL#2 \n"
  56 "    B       loc_FFDFD788 \n"
  57 "    B       loc_FFDFD854 \n"
  58 "    B       loc_FFDFD854 \n"
  59 "    B       loc_FFDFD854 \n"
  60 "    B       loc_FFDFD854 \n"
  61 "    B       loc_FFDFD854 \n"
  62 "    B       loc_FFDFD854 \n"
  63 "    B       loc_FFDFD854 \n"
  64 "    B       loc_FFDFD85C \n"
  65 "    B       loc_FFDFD7E4 \n"
  66 "    B       loc_FFDFD84C \n"
  68 "loc_FFDFD7E4:\n"
  69 "    MOV     R0, #0 \n"
  70 "    MOV     R4, R5 \n"
  71 "    STR     R0, [SP] \n"
  73 "loc_FFDFD7F0:\n"
  74 "    LDR     R0, [R4, #0x10] \n"
  75 "    MOV     R1, SP \n"
  76 "    BL      sub_FFC292A0 /*_GetNumberOfPostedMessages*/ \n"
  77 "    LDR     R0, [SP] \n"
  78 "    CMP     R0, #0 \n"
  79 "    BEQ     loc_FFDFD81C \n"
  80 "    LDR     R0, [R4, #0x10] \n"
  81 "    MOV     R2, #0 \n"
  82 "    ADD     R1, SP, #4 \n"
  83 "    BL      sub_FFC2905C /*_ReceiveMessageQueue*/ \n"
  84 "    B       loc_FFDFD7F0 \n"
  86 "loc_FFDFD81C:\n"
  87 "    LDR     R0, [R4, #4] \n"
  88 "    CMN     R0, #1 \n"
  89 "    BEQ     loc_FFDFD840 \n"
  90 "    BL      fwt_close \n"  // --> Patched. Old value = _Close.
  91 "    MVN     R0, #0 \n"
  92 "    STR     R0, [R4, #4] \n"
  93 "    LDR     R0, =0xCEB94 \n"
  94 "    BL      sub_FFC52F70 \n"
  95 "    BL      sub_FFC5119C \n"
  97 "loc_FFDFD840:\n"
  98 "    LDR     R0, [R4, #0xC] \n"
  99 "    BL      _GiveSemaphore \n"
 100 "    B       loc_FFDFD788 \n"
 102 "loc_FFDFD84C:\n"
 103 "    BL      sub_FFDFDA5C_my \n"  // --> Patched. Old value = 0xFFDFDA5C. Open stage
 104 "    B       loc_FFDFD788 \n"
 106 "loc_FFDFD854:\n"
 107 "    BL      sub_FFDFDBA4_my \n"  // --> Patched. Old value = 0xFFDFDBA4. Write stage
 108 "    B       loc_FFDFD788 \n"
 110 "loc_FFDFD85C:\n"
 111 "    BL      sub_FFDFD60C_my \n"  // --> Patched. Old value = 0xFFDFD60C. Close stage
 112 "    B       loc_FFDFD788 \n"
 113 );
 114 }
 116 /*************************************************************/
 117 //** sub_FFDFDA5C_my @ 0xFFDFDA5C - 0xFFDFDAB0, length=22
 118 void __attribute__((naked,noinline)) sub_FFDFDA5C_my() {
 119 asm volatile (
 120 "    STMFD   SP!, {R4-R8,LR} \n"
 121 "    MOV     R4, R0 \n"
 122 "    SUB     SP, SP, #0x38 \n"
 123 "    ADD     R0, R0, #0x50 \n"
 124 "    BL      sub_FFC52F70 \n"
 125 "    MOV     R1, #0 \n"
 126 "    BL      sub_FFC51134 \n"
 127 "    LDR     R0, [R4, #0xC] \n"
 128 "    BL      sub_FFC00340 \n"
 129 "    LDR     R0, [R4, #0x4C] \n"
 130 "    LDR     R8, =0x1B6 \n"
 131 "    CMP     R0, #1 \n"
 132 "    LDREQ   R0, [R4, #8] \n"
 133 "    ADD     R6, R4, #0x50 \n"
 134 "    ORREQ   R0, R0, #0x8000 \n"
 135 "    STREQ   R0, [R4, #8] \n"
 136 //hook start
 137 "    MOV R0, R4\n"
 138 "    BL filewrite_main_hook\n"
 139 //hook end
 140 "    LDR     R7, [R4, #8] \n"
 141 "    LDR     R5, [R4, #0xC] \n"
 142 "    MOV     R2, R8 \n"
 143 "    MOV     R1, R7 \n"
 144 "    MOV     R0, R6 \n"
 145 "    BL      fwt_open \n"  // --> Patched. Old value = _Open.
 146 "    LDR     PC, =0xFFDFDAB4 \n"  // Continue in firmware
 147 );
 148 }
 150 /*************************************************************/
 151 //** sub_FFDFDBA4_my @ 0xFFDFDBA4 - 0xFFDFDCAC, length=67
 152 void __attribute__((naked,noinline)) sub_FFDFDBA4_my() {
 153 asm volatile (
 154 "    STMFD   SP!, {R4-R10,LR} \n"
 155 "    MOV     R5, R0 \n"
 156 "    LDR     R0, [R0] \n"
 157 "    CMP     R0, #6 \n"
 158 "    BHI     loc_FFDFDBD0 \n"
 159 "    ADD     R0, R5, R0, LSL#3 \n"
 160 "    LDR     R8, [R0, #0x14]! \n"
 161 "    LDR     R7, [R0, #4] \n"
 162 "    CMP     R7, #0 \n"
 163 "    BNE     loc_FFDFDBE8 \n"
 164 "    B       loc_FFDFDBDC \n"
 166 "loc_FFDFDBD0:\n"
 167 "    LDR     R1, =0x299 \n"
 168 "    LDR     R0, =0xFFDFD874 /*'dwFWrite.c'*/ \n"
 169 "    BL      _DebugAssert \n"
 171 "loc_FFDFDBDC:\n"
 172 "    MOV     R1, R5 \n"
 173 "    MOV     R0, #7 \n"
 174 "    B       loc_FFDFDC7C \n"
 176 "loc_FFDFDBE8:\n"
 177 "    LDR     R9, =0x8A90 \n"
 178 "    MOV     R4, R7 \n"
 180 "loc_FFDFDBF0:\n"
 181 "    LDR     R0, [R5, #4] \n"
 182 "    CMP     R4, #0x1000000 \n"
 183 "    MOVLS   R6, R4 \n"
 184 "    MOVHI   R6, #0x1000000 \n"
 185 "    BIC     R1, R0, #0xFF000000 \n"
 186 "    CMP     R1, #0 \n"
 187 "    BICNE   R0, R0, #0xFF000000 \n"
 188 "    RSBNE   R0, R0, #0x1000000 \n"
 189 "    CMPNE   R6, R0 \n"
 190 "    MOVHI   R6, R0 \n"
 191 "    LDR     R0, [R9, #4] \n"
 192 "    MOV     R2, R6 \n"
 193 "    MOV     R1, R8 \n"
 194 "    BL      fwt_write \n"  // --> Patched. Old value = _Write.
 195 "    LDR     R1, [R5, #4] \n"
 196 "    CMP     R6, R0 \n"
 197 "    ADD     R1, R1, R0 \n"
 198 "    STR     R1, [R5, #4] \n"
 199 "    BEQ     loc_FFDFDC50 \n"
 200 "    CMN     R0, #1 \n"
 201 "    LDRNE   R0, =0x9200015 \n"
 202 "    LDREQ   R0, =0x9200005 \n"
 203 "    STR     R0, [R5, #0x10] \n"
 204 "    B       loc_FFDFDBDC \n"
 206 "loc_FFDFDC50:\n"
 207 "    SUB     R4, R4, R0 \n"
 208 "    CMP     R4, R7 \n"
 209 "    ADD     R8, R8, R0 \n"
 210 "    MOVCS   R1, #0x2C4 \n"
 211 "    LDRCS   R0, =0xFFDFD874 /*'dwFWrite.c'*/ \n"
 212 "    BLCS    _DebugAssert \n"
 213 "    CMP     R4, #0 \n"
 214 "    BNE     loc_FFDFDBF0 \n"
 215 "    LDR     R0, [R5] \n"
 216 "    MOV     R1, R5 \n"
 217 "    ADD     R0, R0, #1 \n"
 219 "loc_FFDFDC7C:\n"
 220 "    LDMFD   SP!, {R4-R10,LR} \n"
 221 "    B       sub_FFDFD55C \n"
 222 );
 223 }
 225 /*************************************************************/
 226 //** sub_FFDFD60C_my @ 0xFFDFD60C - 0xFFDFD640, length=14
 227 void __attribute__((naked,noinline)) sub_FFDFD60C_my() {
 228 asm volatile (
 229 "    STMFD   SP!, {R4-R6,LR} \n"
 230 "    LDR     R5, =0x8A90 \n"
 231 "    MOV     R4, R0 \n"
 232 "    LDR     R0, [R5, #4] \n"
 233 "    SUB     SP, SP, #0x38 \n"
 234 "    CMN     R0, #1 \n"
 235 "    BEQ     sub_FFDFD654 \n"
 236 "    LDR     R1, [R4, #8] \n"
 237 "    LDR     R6, =0x9200003 \n"
 238 "    TST     R1, #0x8000 \n"
 239 "    BEQ     loc_FFDFD640 \n"
 240 //mod start
 241 "    LDR R3, =current_write_ignored\n"
 242 "    LDR R3, [R3]\n"
 243 "    CMP R3, #0\n"
 244 "    BNE loc_D\n" // jump over the next block
 245 //mod end
 246 "    BL      sub_FFC26410 \n"
 247 "    B       sub_FFDFD644 \n"
 249 "loc_FFDFD640:\n"
 250 "loc_D:\n"
 251 "    BL      fwt_close \n"  // --> Patched. Old value = _Close.
 252 "    LDR     PC, =0xFFDFD644 \n"  // Continue in firmware
 253 );
 254 }