root/platform/g15/sub/100b/filewrite.c

DEFINITIONS

1. filewritetask
2. sub_FF367534_my
3. sub_FF367BF0_my
4. sub_FF3676C0_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  * pdc is required, everything after that is optional (DryOS < R50)
  17  * file_offset, full_size, seek_flag only needs to be defined for DryOS>=r50 generation cameras
  18  */
  19 typedef struct
  20 {
  21     int unkn1;
  22     int file_offset;
  23     int full_size;
  24     int unkn2, unkn3;
cam_ptp_data_chunk pdc[MAX_CHUNKS_FOR_FWT];
  26     int seek_flag;      // offset from start 0x4c = 76 bytes = 19 words
  27     int unkn4, unkn5;
  28     char name[32];      // offset from start 0x58 = 88 bytes = 22 words
  29 } fwt_data_struct;
  30 // seek_flag is different:
  31 // seek state is activated (from state 0xc, open) when
  32 // (word at 0x4c) AND 0x40
  33 // OR
  34 // write offset is not 0
  35 #define FWT_MUSTSEEK    0x40   // value of the masked seek_flag indicating seek is required
  36 #define FWT_SEEKMASK    0x40   // masks out unneeded bits of seek_flag
  38 #include "../../../generic/filewrite.c"
  40 /*************************************************************/
  41 //** filewritetask @ 0xFF367848 - 0xFF3679E8, length=105
  42 void __attribute__((naked,noinline)) filewritetask() {
  43 asm volatile (
  44 "    STMFD   SP!, {R1-R7,LR} \n"
  45 "    LDR     R5, =0x10E44 \n"
  46 "    MOV     R6, #0 \n"
  48 "loc_FF367854:\n"
  49 "    LDR     R0, [R5, #0x10] \n"
  50 "    MOV     R2, #0 \n"
  51 "    ADD     R1, SP, #8 \n"
  52 "    BL      sub_0068BDE0 /*_ReceiveMessageQueue*/ \n"
  53 "    CMP     R0, #0 \n"
  54 "    MOVNE   R1, #0x3EC \n"
  55 "    LDRNE   R0, =0xFF367A14 /*'dwFWrite.c'*/ \n"
  56 "    BLNE    _DebugAssert \n"
  57 "    LDR     R0, [SP, #8] \n"
  58 "    LDR     R1, [R0] \n"
  59 "    CMP     R1, #0xD \n"
  60 "    ADDCC   PC, PC, R1, LSL#2 \n"
  61 "    B       loc_FF367854 \n"
  62 "    B       loc_FF3679DC \n"
  63 "    B       loc_FF3679DC \n"
  64 "    B       loc_FF3679DC \n"
  65 "    B       loc_FF3679DC \n"
  66 "    B       loc_FF3679DC \n"
  67 "    B       loc_FF3679DC \n"
  68 "    B       loc_FF3679DC \n"
  69 "    B       loc_FF3679E4 \n"
  70 "    B       loc_FF3678BC \n"
  71 "    B       loc_FF367958 \n"
  72 "    B       loc_FF367988 \n"
  73 "    B       loc_FF367924 \n"
  74 "    B       loc_FF367950 \n"
  76 "loc_FF3678BC:\n"
  77 "    MOV     R4, R5 \n"
  78 "    STR     R6, [SP] \n"
  80 "loc_FF3678C4:\n"
  81 "    LDR     R0, [R4, #0x10] \n"
  82 "    MOV     R1, SP \n"
  83 "    BL      sub_0068C024 /*_GetNumberOfPostedMessages*/ \n"
  84 "    LDR     R0, [SP] \n"
  85 "    CMP     R0, #0 \n"
  86 "    BEQ     loc_FF3678F0 \n"
  87 "    LDR     R0, [R4, #0x10] \n"
  88 "    MOV     R2, #0 \n"
  89 "    ADD     R1, SP, #4 \n"
  90 "    BL      sub_0068BDE0 /*_ReceiveMessageQueue*/ \n"
  91 "    B       loc_FF3678C4 \n"
  93 "loc_FF3678F0:\n"
  94 "    LDR     R0, [R4, #4] \n"
  95 "    CMN     R0, #1 \n"
  96 "    BEQ     loc_FF367918 \n"
  97 "    BL      fwt_close \n"  // --> Patched. Old value = _Close.
  98 "    MVN     R0, #0 \n"
  99 "    STR     R0, [R4, #4] \n"
 100 "    LDR     R0, =0x1628F8 \n"
 101 "    BL      sub_FF073ED8 \n"
 102 "    MOV     R1, #0 \n"
 103 "    BL      sub_FF072128 \n"
 105 "loc_FF367918:\n"
 106 "    LDR     R0, [R4, #0xC] \n"
 107 "    BL      _GiveSemaphore \n"
 108 "    B       loc_FF367854 \n"
 110 "loc_FF367924:\n"
 111 "    MOV     R4, R0 \n"
 112 "    ADD     R0, R0, #0x58 \n"
 113 "    BL      sub_FF073ED8 \n"
 114 "    MOV     R1, #0 \n"
 115 "    BL      sub_FF071FEC \n"
 116 "    LDR     R0, [R4, #0xC] \n"
 117 "    BL      sub_FF000370 \n"
 118 "    ADD     R0, R4, #0x58 \n"
 119 //mod start
 120 "    LDR R3, =ignore_current_write\n" // !!
 121 "    LDR R3, [R3]\n"
 122 "    CMP R3, #0\n"
 123 "    BNE loc_A\n" // skip creating directory
 124 //mod end
 125 "    BL      sub_FF01D1F0 \n"
 126 "    ADD     R0, R4, #0x58 \n"
 127 "    B       loc_FF3679BC \n"
 129 "loc_FF367950:\n"
 130 "    BL      sub_FF367534_my \n"  // --> Patched. Old value = 0xFF367534. Open stage
 131 "    B       loc_FF367854 \n"
 133 "loc_FF367958:\n"
 134 "    LDR     R1, [R0, #4] \n"
 135 "    MOV     R4, R0 \n"
 136 "    LDR     R0, [R5, #4] \n"
 137 "    MOV     R2, #0 \n"
 138 "    BL      fwt_lseek \n"  // --> Patched. Old value = _lseek.
 139 "    CMN     R0, #1 \n"
 140 "    LDREQ   R0, =0x9200013 \n"
 141 "    MOVEQ   R1, R4 \n"
 142 "    STREQ   R0, [R4, #0x10] \n"
 143 "    MOVEQ   R0, #7 \n"
 144 "    BLEQ    sub_FF367474 \n"
 145 "    B       loc_FF367854 \n"
 147 "loc_FF367988:\n"
 148 "    MOV     R4, R0 \n"
 149 "    LDRSB   R0, [R0, #0x58] \n"
 150 "    CMP     R0, #0 \n"
 151 "    BEQ     loc_FF367854 \n"
 152 "    STRB    R0, [SP, #4] \n"
 153 "    ADD     R0, R4, #0x58 \n"
 154 "    STRB    R6, [SP, #5] \n"
 155 "    BL      sub_FF073ED8 \n"
 156 "    MOV     R1, #0 \n"
 157 "    BL      sub_FF071FEC \n"
 158 //mod start
 159 "    LDR R3, =ignore_current_write\n" // !!
 160 "    LDR R3, [R3]\n"
 161 "    CMP R3, #0\n"
 162 "    BNE loc_B\n" // skip flushing the cache
 163 //mod end
 164 "    ADD     R0, SP, #4 \n"
 165 "    BL      sub_FF070EF0 \n"
 166 "loc_B:\n"
 167 "    ADD     R0, R4, #0x58 \n"
 169 "loc_FF3679BC:\n"
 170 "loc_A:\n"
 171 "    BL      sub_FF073ED8 \n"
 172 "    LDR     R1, [R5, #0x18] \n"
 173 "    BL      sub_FF072128 \n"
 174 "    LDR     R1, [R5, #0x14] \n"
 175 "    CMP     R1, #0 \n"
 176 "    LDRNE   R0, [R4, #0x10] \n"
 177 "    BLXNE   R1 \n"
 178 "    B       loc_FF367854 \n"
 180 "loc_FF3679DC:\n"
 181 "    BL      sub_FF367BF0_my \n"  // --> Patched. Old value = 0xFF367BF0. Write stage
 182 "    B       loc_FF367854 \n"
 184 "loc_FF3679E4:\n"
 185 "    BL      sub_FF3676C0_my \n"  // --> Patched. Old value = 0xFF3676C0. Close stage
 186 "    B       loc_FF367854 \n"
 187 );
 188 }
 190 /*************************************************************/
 191 //** sub_FF367534_my @ 0xFF367534 - 0xFF3676BC, length=99
 192 void __attribute__((naked,noinline)) sub_FF367534_my() {
 193 asm volatile (
 194 "    STMFD   SP!, {R4-R8,LR} \n"
 195 "    MOV     R4, R0 \n"
 196 //hook placed here to avoid conditional branch a few instructions below (watch out for registers!)
 197 //"  MOV   R0, R4\n"      //data block start, commented out as R0 is already holding what we need
 198 "    BL filewrite_main_hook\n"
 199 "    MOV     R0, R4\n"      //restore register(s)
 200 //hook end
 201 "    LDR     R0, [R0, #0x4C] \n"
 202 "    SUB     SP, SP, #0x38 \n"
 203 "    TST     R0, #1 \n"
 204 "    BEQ     loc_FF367690 \n"
 205 "    ADD     R0, R4, #0x58 \n"
 206 "    BL      sub_FF073ED8 \n"
 207 "    MOV     R1, #0 \n"
 208 "    BL      sub_FF071FEC \n"
 209 "    LDR     R0, [R4, #0xC] \n"
 210 "    BL      sub_FF000370 \n"
 211 "    LDR     R0, [R4, #0x4C] \n"
 212 "    LDR     R5, =0x301 \n"
 213 "    TST     R0, #0x10 \n"
 214 "    MOVNE   R5, #9 \n"
 215 "    BNE     loc_FF367580 \n"
 216 "    TST     R0, #0x40 \n"
 217 "    MOVNE   R5, #1 \n"
 219 "loc_FF367580:\n"
 220 "    TST     R0, #0x20 \n"
 221 "    BNE     loc_FF367594 \n"
 222 "    LDR     R0, [R4, #0x54] \n"
 223 "    CMP     R0, #1 \n"
 224 "    BNE     loc_FF367598 \n"
 226 "loc_FF367594:\n"
 227 "    ORR     R5, R5, #0x8000 \n"
 229 "loc_FF367598:\n"
 230 "    LDR     R8, =0x1B6 \n"
 231 "    ADD     R7, R4, #0x58 \n"
 232 "    LDR     R6, [R4, #0xC] \n"
 233 "    MOV     R2, R8 \n"
 234 "    MOV     R1, R5 \n"
 235 "    MOV     R0, R7 \n"
 236 "    BL      fwt_open \n"  // --> Patched. Old value = _Open.
 237 "    CMN     R0, #1 \n"
 238 "    BNE     loc_FF367618 \n"
 239 "    MOV     R0, R7 \n"
 240 "    BL      sub_FF01D1F0 \n"
 241 "    MOV     R2, #0xF \n"
 242 "    MOV     R1, R7 \n"
 243 "    MOV     R0, SP \n"
 244 "    BL      sub_00690174 \n"
 245 "    MOV     R0, #0 \n"
 246 "    LDR     R1, =0x41FF \n"
 247 "    STRB    R0, [SP, #0xF] \n"
 248 "    STR     R1, [SP, #0x20] \n"
 249 "    MOV     R1, #0x10 \n"
 250 "    STR     R0, [SP, #0x28] \n"
 251 "    STR     R1, [SP, #0x24] \n"
 252 "    ADD     R1, SP, #0x20 \n"
 253 "    MOV     R0, SP \n"
 254 "    STR     R6, [SP, #0x2C] \n"
 255 "    STR     R6, [SP, #0x30] \n"
 256 "    STR     R6, [SP, #0x34] \n"
 257 "    BL      sub_FF071968 \n"
 258 "    MOV     R2, R8 \n"
 259 "    MOV     R1, R5 \n"
 260 "    MOV     R0, R7 \n"
 261 "    BL      _Open \n"
 263 "loc_FF367618:\n"
 264 "    LDR     R6, =0x10E44 \n"
 265 "    CMN     R0, #1 \n"
 266 "    MOV     R5, R0 \n"
 267 "    STR     R0, [R6, #4] \n"
 268 "    BNE     loc_FF367658 \n"
 269 "    ADD     R0, R4, #0x58 \n"
 270 "    BL      sub_FF073ED8 \n"
 271 "    LDR     R1, [R6, #0x18] \n"
 272 "    BL      sub_FF072128 \n"
 273 "    LDR     R1, [R6, #0x14] \n"
 274 "    CMP     R1, #0 \n"
 275 "    BEQ     loc_FF3676B8 \n"
 276 "    ADD     SP, SP, #0x38 \n"
 277 "    LDMFD   SP!, {R4-R8,LR} \n"
 278 "    LDR     R0, =0x9200001 \n"
 279 "    BX      R1 \n"
 281 "loc_FF367658:\n"
 282 "    LDR     R0, =0x1628F8 \n"
 283 "    MOV     R2, #0x20 \n"
 284 "    ADD     R1, R4, #0x58 \n"
 285 "    BL      sub_0069035C \n"
 287 //mod start
 288 "    LDR R3, =current_write_ignored\n"
 289 "    LDR R3, [R3]\n"
 290 "    CMP R3, #0\n"
 291 "    BNE loc_C\n" // jump over the next block
 292 //mod end
 294 "    LDR     R0, [R4, #0x4C] \n"
 295 "    TST     R0, #0x80 \n"
 296 "    BEQ     loc_FF367690 \n"
 297 "    LDR     R1, [R4, #8] \n"
 298 "    MOV     R0, R5 \n"
 299 "    BL      sub_FF01CEC0 \n"
 300 "    CMP     R0, #0 \n"
 301 "    MOVEQ   R1, R4 \n"
 302 "    MOVEQ   R0, #7 \n"
 303 "    BEQ     loc_FF3676B4 \n"
 305 "loc_FF367690:\n"
 306 "loc_C:\n"
 307 "    LDR     R0, [R4, #0x4C] \n"
 308 "    TST     R0, #0x40 \n"
 309 "    LDREQ   R0, [R4, #4] \n"
 310 "    CMPEQ   R0, #0 \n"
 311 "    MOVNE   R1, R4 \n"
 312 "    MOVNE   R0, #9 \n"
 313 "    BLNE    sub_FF367474 \n"
 314 "    MOV     R1, R4 \n"
 315 "    MOV     R0, #0 \n"
 317 "loc_FF3676B4:\n"
 318 "    BL      sub_FF367474 \n"
 320 "loc_FF3676B8:\n"
 321 "    ADD     SP, SP, #0x38 \n"
 322 "    LDMFD   SP!, {R4-R8,PC} \n"
 323 );
 324 }
 326 /*************************************************************/
 327 //** sub_FF367BF0_my @ 0xFF367BF0 - 0xFF367CCC, length=56
 328 void __attribute__((naked,noinline)) sub_FF367BF0_my() {
 329 asm volatile (
 330 "    STMFD   SP!, {R4-R10,LR} \n"
 331 "    MOV     R5, R0 \n"
 332 "    LDR     R0, [R0] \n"
 333 "    CMP     R0, #6 \n"
 334 "    BHI     loc_FF367C1C \n"
 335 "    ADD     R0, R5, R0, LSL#3 \n"
 336 "    LDR     R8, [R0, #0x14]! \n"
 337 "    LDR     R7, [R0, #4] \n"
 338 "    CMP     R7, #0 \n"
 339 "    BNE     loc_FF367C34 \n"
 340 "    B       loc_FF367C28 \n"
 342 "loc_FF367C1C:\n"
 343 "    LDR     R1, =0x341 \n"
 344 "    LDR     R0, =0xFF367A14 /*'dwFWrite.c'*/ \n"
 345 "    BL      _DebugAssert \n"
 347 "loc_FF367C28:\n"
 348 "    MOV     R1, R5 \n"
 349 "    MOV     R0, #7 \n"
 350 "    B       loc_FF367CC8 \n"
 352 "loc_FF367C34:\n"
 353 "    LDR     R9, =0x10E44 \n"
 354 "    MOV     R4, R7 \n"
 356 "loc_FF367C3C:\n"
 357 "    LDR     R0, [R5, #4] \n"
 358 "    CMP     R4, #0x1000000 \n"
 359 "    MOVLS   R6, R4 \n"
 360 "    MOVHI   R6, #0x1000000 \n"
 361 "    BIC     R1, R0, #0xFF000000 \n"
 362 "    CMP     R1, #0 \n"
 363 "    BICNE   R0, R0, #0xFF000000 \n"
 364 "    RSBNE   R0, R0, #0x1000000 \n"
 365 "    CMPNE   R6, R0 \n"
 366 "    MOVHI   R6, R0 \n"
 367 "    LDR     R0, [R9, #4] \n"
 368 "    MOV     R2, R6 \n"
 369 "    MOV     R1, R8 \n"
 370 "    BL      fwt_write \n"  // --> Patched. Old value = _Write.
 371 "    LDR     R1, [R5, #4] \n"
 372 "    CMP     R6, R0 \n"
 373 "    ADD     R1, R1, R0 \n"
 374 "    STR     R1, [R5, #4] \n"
 375 "    BEQ     loc_FF367C9C \n"
 376 "    CMN     R0, #1 \n"
 377 "    LDRNE   R0, =0x9200015 \n"
 378 "    LDREQ   R0, =0x9200005 \n"
 379 "    STR     R0, [R5, #0x10] \n"
 380 "    B       loc_FF367C28 \n"
 382 "loc_FF367C9C:\n"
 383 "    SUB     R4, R4, R0 \n"
 384 "    CMP     R4, R7 \n"
 385 "    ADD     R8, R8, R0 \n"
 386 "    MOVCS   R1, #0x36C \n"
 387 "    LDRCS   R0, =0xFF367A14 /*'dwFWrite.c'*/ \n"
 388 "    BLCS    _DebugAssert \n"
 389 "    CMP     R4, #0 \n"
 390 "    BNE     loc_FF367C3C \n"
 391 "    LDR     R0, [R5] \n"
 392 "    MOV     R1, R5 \n"
 393 "    ADD     R0, R0, #1 \n"
 395 "loc_FF367CC8:\n"
 396 "    LDMFD   SP!, {R4-R10,LR} \n"
 397 "    B       sub_FF367474 \n"
 398 );
 399 }
 401 /*************************************************************/
 402 //** sub_FF3676C0_my @ 0xFF3676C0 - 0xFF367700, length=17
 403 void __attribute__((naked,noinline)) sub_FF3676C0_my() {
 404 asm volatile (
 405 "    STMFD   SP!, {R4-R6,LR} \n"
 406 "    MOV     R4, R0 \n"
 407 "    LDR     R0, [R0, #0x4C] \n"
 408 "    LDR     R5, =0x10E44 \n"
 409 "    TST     R0, #2 \n"
 410 "    SUB     SP, SP, #0x38 \n"
 411 "    BEQ     sub_FF367828 \n"
 412 "    LDR     R0, [R5, #4] \n"
 413 "    CMN     R0, #1 \n"
 414 "    BEQ     sub_FF367714 \n"
 415 "    LDR     R1, [R4, #0x54] \n"
 416 "    LDR     R6, =0x9200003 \n"
 417 "    CMP     R1, #1 \n"
 418 "    BNE     loc_FF367700 \n"
 420 //mod start
 421 "    LDR R3, =current_write_ignored\n"
 422 "    LDR R3, [R3]\n"
 423 "    CMP R3, #0\n"
 424 "    BNE loc_D\n" // jump over the next block
 425 //mod end
 427 "    BL      sub_FF01CC14 \n"
 428 "    B       sub_FF367704 \n"
 430 "loc_FF367700:\n"
 431 "loc_D:\n"
 432 "    BL      fwt_close \n"  // --> Patched. Old value = _Close.
 433 "    LDR     PC, =0xFF367704 \n"  // Continue in firmware
 434 );
 435 }