| cc68a136 |
1 | *update*\r |
| 2 | Use the "compress jumtable" Cyclone config.h option to fix this issue\r |
| 3 | (no patcher will be needed then).\r |
| 4 | \r |
| 5 | \r |
| 6 | There is a problem with Cyclone on symbian platform:\r |
| 7 | GNU as generates COFF object files, which allow max of 0xFFFF (65535) relocation\r |
| 8 | entries. Cyclone uses a jumptable of 0x10000 (65536, 1 for every opcode-word)\r |
| 9 | antries. When the executable is loaded, all jumptable entries must be relocated\r |
| 10 | to point to right code location. Because of this limitation, Cyclone's jumptable is\r |
| 11 | incomplete (misses 2 entries), and if M68k opcodes 0xFFFE or 0xFFFF are ever\r |
| 12 | encoundered when emulating, your emulator will crash.\r |
| 13 | \r |
| 14 | I have written a little patcher to fix that. It writes those two missing entries and\r |
| 15 | marks them as relocatable. Placeholders must not be deleted just after the jumttable\r |
| 16 | in the Cyclone source code.\r |
| 17 | \r |
| 18 | This version works with intermediate PE executable, which is used both for APPs and EXEs,\r |
| 19 | and is produced by gcc toolkit just before running petran. So it's best to insert\r |
| 20 | this in your makefile, in the rule which builds your APP/EXE, just after last 'ld'\r |
| 21 | statement, for example:\r |
| 22 | \r |
| 23 | $(EPOCTRGUREL)\PICODRIVEN.APP : $(EPOCBLDUREL)\PICODRIVEN.in $(EPOCSTATLINKUREL)\EDLL.LIB $(LIBSUREL)\r |
| 24 | ...\r |
| 25 | ld -s -e _E32Dll -u _E32Dll --dll \\r |
| 26 | "$(EPOCBLDUREL)\PICODRIVEN.exp" \\r |
| 27 | -Map "$(EPOCTRGUREL)\PICODRIVEN.APP.map" -o "$(EPOCBLDUREL)\PICODRIVEN.APP" \\r |
| 28 | "$(EPOCSTATLINKUREL)\EDLL.LIB" --whole-archive "$(EPOCBLDUREL)\PICODRIVEN.in" \\r |
| 29 | --no-whole-archive $(LIBSUREL) $(USERLDFLAGS)\r |
| 30 | -$(ERASE) "$(EPOCBLDUREL)\PICODRIVEN.exp"\r |
| 31 | \r |
| 32 | patchtable_symb2 "$(EPOCBLDUREL)\PICODRIVEN.APP"\r |
| 33 | \r |
| 34 | petran "$(EPOCBLDUREL)\PICODRIVEN.APP" "$@" \\r |
| 35 | -nocall -uid1 0x10000079 -uid2 0x100039ce -uid3 0x1000c193\r |
| 36 | -$(ERASE) "$(EPOCBLDUREL)\PICODRIVEN.APP"\r |
| 37 | perl -S ecopyfile.pl "$@" "PICODRIVEN.APP"\r |
| 38 | \r |
| 39 | \r |
| 40 | This is also compatible with ECompXL.\r |
| 41 | \r |
| 42 | To test if this thing worked, you can load crash_cyclone.bin in your emulator.\r |
notaz.gp2x.de / picodrive.git / blame