| | 1 | OUTPUT_ARCH(m68k)\r |
| | 2 | SEARCH_DIR(.)\r |
| | 3 | /*GROUP(-lbcc -lc -lgcc)*/\r |
| | 4 | __DYNAMIC = 0;\r |
| | 5 | \r |
| | 6 | /*\r |
| | 7 | * Setup the memory map of the SEGA Genesis.\r |
| | 8 | * stack grows down from high memory.\r |
| | 9 | *\r |
| | 10 | * The memory map look like this:\r |
| | 11 | * +--------------------+ <- low memory\r |
| | 12 | * | .text |\r |
| | 13 | * | _etext |\r |
| | 14 | * | ctor list | the ctor and dtor lists are for\r |
| | 15 | * | dtor list | C++ support\r |
| | 16 | * +--------------------+\r |
| | 17 | * | .data | initialized data goes here\r |
| | 18 | * | _edata |\r |
| | 19 | * +--------------------+\r |
| | 20 | * | .bss |\r |
| | 21 | * | __bss_start | start of bss, cleared by crt0\r |
| | 22 | * | _end | start of heap, used by sbrk()\r |
| | 23 | * +--------------------+\r |
| | 24 | * . .\r |
| | 25 | * . .\r |
| | 26 | * . .\r |
| | 27 | * | __stack | top of stack\r |
| | 28 | * +--------------------+\r |
| | 29 | */\r |
| | 30 | /*\r |
| | 31 | MEMORY\r |
| | 32 | {\r |
| | 33 | rom : ORIGIN = 0x00000000, LENGTH = 0x00400000\r |
| | 34 | ram : ORIGIN = 0xffff0000, LENGTH = 0x00010000\r |
| | 35 | }\r |
| | 36 | */\r |
| | 37 | \r |
| | 38 | MEMORY {\r |
| | 39 | ram : ORIGIN = 0x0, LENGTH = 0xfffffff\r |
| | 40 | }\r |
| | 41 | \r |
| | 42 | /*\r |
| | 43 | * allocate the stack to be at the top of memory, since the stack\r |
| | 44 | * grows down\r |
| | 45 | */\r |
| | 46 | \r |
| | 47 | PROVIDE (__stack = 0x00fffff0);\r |
| | 48 | \r |
| | 49 | PROVIDE (ram = 0xffff0000);\r |
| | 50 | /*\r |
| | 51 | * Initalize some symbols to be zero so we can reference them in the\r |
| | 52 | * crt0 without core dumping. These functions are all optional, but\r |
| | 53 | * we do this so we can have our crt0 always use them if they exist. \r |
| | 54 | * This is so BSPs work better when using the crt0 installed with gcc.\r |
| | 55 | * We have to initalize them twice, so we cover a.out (which prepends\r |
| | 56 | * an underscore) and coff object file formats.\r |
| | 57 | */\r |
| | 58 | PROVIDE (hardware_init_hook = 0);\r |
| | 59 | PROVIDE (_hardware_init_hook = 0);\r |
| | 60 | PROVIDE (software_init_hook = 0);\r |
| | 61 | PROVIDE (_software_init_hook = 0);\r |
| | 62 | \r |
| | 63 | SECTIONS\r |
| | 64 | {\r |
| | 65 | .text 0x00000000:\r |
| | 66 | {\r |
| | 67 | *(.text)\r |
| | 68 | . = ALIGN(0x4);\r |
| | 69 | __CTOR_LIST__ = .;\r |
| | 70 | LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)\r |
| | 71 | *(.ctors)\r |
| | 72 | LONG(0)\r |
| | 73 | __CTOR_END__ = .;\r |
| | 74 | __DTOR_LIST__ = .;\r |
| | 75 | LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)\r |
| | 76 | *(.dtors)\r |
| | 77 | LONG(0)\r |
| | 78 | __DTOR_END__ = .;\r |
| | 79 | *(.rodata)\r |
| | 80 | *(.gcc_except_table) \r |
| | 81 | \r |
| | 82 | __INIT_SECTION__ = . ;\r |
| | 83 | *(.init)\r |
| | 84 | SHORT (0x4e75) /* rts */\r |
| | 85 | \r |
| | 86 | __FINI_SECTION__ = . ;\r |
| | 87 | *(.fini)\r |
| | 88 | SHORT (0x4e75) /* rts */\r |
| | 89 | \r |
| | 90 | _etext = .;\r |
| | 91 | *(.lit)\r |
| | 92 | } > ram\r |
| | 93 | \r |
| | 94 | .data BLOCK (0x4) :\r |
| | 95 | {\r |
| | 96 | *(.shdata)\r |
| | 97 | *(.data)\r |
| | 98 | _edata = .;\r |
| | 99 | } > ram\r |
| | 100 | \r |
| | 101 | .bss 0xff0000 :\r |
| | 102 | {\r |
| | 103 | __bss_start = . ;\r |
| | 104 | *(.shbss)\r |
| | 105 | *(.bss)\r |
| | 106 | *(COMMON)\r |
| | 107 | *(.eh_fram)\r |
| | 108 | *(.eh_frame)\r |
| | 109 | _end = ALIGN (0x8);\r |
| | 110 | __end = _end;\r |
| | 111 | } > ram\r |
| | 112 | \r |
| | 113 | .stab 0 (NOLOAD) :\r |
| | 114 | {\r |
| | 115 | *(.stab)\r |
| | 116 | }\r |
| | 117 | \r |
| | 118 | .stabstr 0 (NOLOAD) :\r |
| | 119 | {\r |
| | 120 | *(.stabstr)\r |
| | 121 | }\r |
| | 122 | }\r |
notaz.gp2x.de / megadrive.git / blame_incremental