| 4db6e09f |
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 |
| 0da5ab5d |
98 | . = ALIGN(0x10);\r |
| 4db6e09f |
99 | _edata = .;\r |
| 100 | } > ram\r |
| 101 | \r |
| 102 | .bss 0xff0000 :\r |
| 103 | {\r |
| 104 | __bss_start = . ;\r |
| 105 | *(.shbss)\r |
| 106 | *(.bss)\r |
| 107 | *(COMMON)\r |
| 108 | *(.eh_fram)\r |
| 109 | *(.eh_frame)\r |
| 110 | _end = ALIGN (0x8);\r |
| 111 | __end = _end;\r |
| 112 | } > ram\r |
| 113 | \r |
| 114 | .stab 0 (NOLOAD) :\r |
| 115 | {\r |
| 116 | *(.stab)\r |
| 117 | }\r |
| 118 | \r |
| 119 | .stabstr 0 (NOLOAD) :\r |
| 120 | {\r |
| 121 | *(.stabstr)\r |
| 122 | }\r |
| 123 | }\r |
notaz.gp2x.de / megadrive.git / blame