[6335022e] | 1 | /* linkcmds |
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| 2 | * |
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[6f9c75c3] | 3 | * $Id$ |
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[6335022e] | 4 | */ |
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| 5 | |
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| 6 | OUTPUT_ARCH(m68k) |
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| 7 | STARTUP(except_vect_332_ROM.o) |
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| 8 | __DYNAMIC = 0; |
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| 9 | |
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| 10 | /* |
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[50bb7627] | 11 | * The memory map looks like this: |
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[6335022e] | 12 | * ROM: |
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| 13 | * +--------------------+ <- low memory |
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| 14 | * | .text | |
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| 15 | * | etext | |
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| 16 | * | ctor list | the ctor and dtor lists are for |
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| 17 | * | dtor list | C++ support |
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| 18 | * | _endtext | |
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| 19 | * | temporary .data | .data is moved to RAM by crt0 |
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| 20 | * | | |
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| 21 | * +--------------------+ <- high memory |
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| 22 | * |
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| 23 | * |
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| 24 | * RAM: |
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| 25 | * +--------------------+ <- low memory |
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[50bb7627] | 26 | * | _RamBase | |
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[6335022e] | 27 | * | .data | initialized data goes here |
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| 28 | * | _sdata | |
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| 29 | * | _edata | |
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| 30 | * +--------------------+ |
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| 31 | * | .bss | |
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[50bb7627] | 32 | * | _clear_start| start of bss, cleared by crt0 |
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[6335022e] | 33 | * | _end | start of heap, used by sbrk() |
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| 34 | * +--------------------+ |
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[50bb7627] | 35 | * | _WorkspaceBase |
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| 36 | * | work space | |
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| 37 | * | heapStart | |
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[6335022e] | 38 | * | heap space | |
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[50bb7627] | 39 | * | _RamEnd | top of stack |
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[6335022e] | 40 | * +--------------------+ <- high memory |
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| 41 | */ |
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| 42 | |
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[50bb7627] | 43 | /* |
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| 44 | * Declare some sizes. |
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| 45 | */ |
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| 46 | _RamBase = DEFINED(_RamBase) ? _RamBase : 0x80000; |
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| 47 | _RamSize = DEFINED(_RamSize) ? _RamSize : 0x40000; |
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| 48 | _RamEnd = _RamBase + _RamSize; |
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| 49 | _HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0x10000; |
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| 50 | _StackSize = DEFINED(_StackSize) ? _StackSize : 0x1000; |
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| 51 | |
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[6335022e] | 52 | MEMORY |
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| 53 | { |
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| 54 | rom : ORIGIN = 0x00000, LENGTH = 256K |
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[50bb7627] | 55 | ram : ORIGIN = 0x80000, LENGTH = 256K |
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[6335022e] | 56 | } |
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| 57 | |
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| 58 | _copy_data_from_rom = 1; |
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| 59 | |
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| 60 | /* |
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| 61 | * |
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| 62 | */ |
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| 63 | SECTIONS |
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| 64 | { |
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[50bb7627] | 65 | ram : { |
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| 66 | . = .; |
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| 67 | } >ram |
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| 68 | |
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| 69 | /* |
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| 70 | * Text, data and bss segments |
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| 71 | */ |
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| 72 | .text : { |
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[6335022e] | 73 | *(.text) |
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[a902441a] | 74 | |
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[50bb7627] | 75 | /* |
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| 76 | * C++ constructors/destructors |
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| 77 | */ |
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| 78 | *(.gnu.linkonce.t.*) |
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| 79 | |
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| 80 | /* |
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| 81 | * Initialization and finalization code. |
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| 82 | * |
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| 83 | * Various files can provide initialization and finalization |
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| 84 | * functions. crtbegin.o and crtend.o are two instances. The |
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| 85 | * body of these functions are in .init and .fini sections. We |
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| 86 | * accumulate the bodies here, and prepend function prologues |
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| 87 | * from crti.o and function epilogues from crtn.o. crti.o must |
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| 88 | * be linked first; crtn.o must be linked last. Because these |
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| 89 | * are wildcards, it doesn't matter if the user does not |
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| 90 | * actually link against crti.o and crtn.o; the linker won't |
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| 91 | * look for a file to match a wildcard. The wildcard also |
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| 92 | * means that it doesn't matter which directory crti.o and |
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| 93 | * crtn.o are in. |
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| 94 | */ |
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| 95 | PROVIDE (_init = .); |
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| 96 | *crti.o(.init) |
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| 97 | *(.init) |
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| 98 | *crtn.o(.init) |
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| 99 | PROVIDE (_fini = .); |
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| 100 | *crti.o(.fini) |
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| 101 | *(.fini) |
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| 102 | *crtn.o(.fini) |
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[a902441a] | 103 | |
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[9c1133e] | 104 | /* |
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| 105 | * Special FreeBSD sysctl sections. |
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| 106 | */ |
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| 107 | . = ALIGN (16); |
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| 108 | __start_set_sysctl_set = .; |
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| 109 | *(set_sysctl_*); |
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| 110 | __stop_set_sysctl_set = ABSOLUTE(.); |
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| 111 | *(set_domain_*); |
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| 112 | *(set_pseudo_*); |
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| 113 | |
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[50bb7627] | 114 | /* |
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| 115 | * C++ constructors/destructors |
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| 116 | * |
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| 117 | * gcc uses crtbegin.o to find the start of the constructors |
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| 118 | * and destructors so we make sure it is first. Because this |
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| 119 | * is a wildcard, it doesn't matter if the user does not |
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| 120 | * actually link against crtbegin.o; the linker won't look for |
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| 121 | * a file to match a wildcard. The wildcard also means that |
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| 122 | * it doesn't matter which directory crtbegin.o is in. The |
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| 123 | * constructor and destructor list are terminated in |
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| 124 | * crtend.o. The same comments apply to it. |
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| 125 | */ |
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| 126 | . = ALIGN (16); |
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| 127 | *crtbegin.o(.ctors) |
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[9c1133e] | 128 | *(.ctors) |
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[50bb7627] | 129 | *crtend.o(.ctors) |
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| 130 | *crtbegin.o(.dtors) |
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[9c1133e] | 131 | *(.dtors) |
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[50bb7627] | 132 | *crtend.o(.dtors) |
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| 133 | |
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| 134 | /* |
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| 135 | * Exception frame info |
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| 136 | */ |
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| 137 | . = ALIGN (16); |
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| 138 | *(.eh_frame) |
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| 139 | |
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| 140 | /* |
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| 141 | * Read-only data |
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| 142 | */ |
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| 143 | . = ALIGN (16); |
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| 144 | _rodata_start = . ; |
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| 145 | *(.rodata) |
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| 146 | *(.gnu.linkonce.r*) |
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| 147 | |
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| 148 | . = ALIGN (16); |
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| 149 | PROVIDE (_etext = .); |
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| 150 | } >rom |
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[a902441a] | 151 | .data : |
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[50bb7627] | 152 | AT ( ADDR(.text) + SIZEOF( .text ) ) |
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[6335022e] | 153 | { |
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[50bb7627] | 154 | PROVIDE (_copy_start = .); |
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[9c1133e] | 155 | *(.data) |
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[50bb7627] | 156 | *(.gnu.linkonce.d*) |
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| 157 | *(.gcc_except_table) |
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| 158 | . = ALIGN (16); |
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| 159 | PROVIDE (_edata = .); |
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| 160 | PROVIDE (_copy_end = .); |
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| 161 | } >ram |
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| 162 | .bss : { |
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| 163 | _clear_start = .; |
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[9c1133e] | 164 | *(.bss) |
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| 165 | *(COMMON) |
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[50bb7627] | 166 | . = ALIGN (16); |
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| 167 | PROVIDE (end = .); |
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| 168 | |
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| 169 | . += _StackSize; |
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| 170 | . = ALIGN (16); |
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| 171 | _stack_init = .; |
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| 172 | _clear_end = .; |
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| 173 | |
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| 174 | _WorkspaceBase = .; |
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| 175 | } >ram |
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| 176 | |
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| 177 | /* Stabs debugging sections. */ |
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| 178 | .stab 0 : { *(.stab) } |
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| 179 | .stabstr 0 : { *(.stabstr) } |
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| 180 | .stab.excl 0 : { *(.stab.excl) } |
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| 181 | .stab.exclstr 0 : { *(.stab.exclstr) } |
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| 182 | .stab.index 0 : { *(.stab.index) } |
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| 183 | .stab.indexstr 0 : { *(.stab.indexstr) } |
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| 184 | .comment 0 : { *(.comment) } |
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| 185 | |
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| 186 | /* DWARF debug sections. |
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| 187 | Symbols in the DWARF debugging sections are relative to the beginning |
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| 188 | of the section so we begin them at 0. */ |
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| 189 | /* DWARF 1 */ |
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| 190 | .debug 0 : { *(.debug) } |
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| 191 | .line 0 : { *(.line) } |
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| 192 | |
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| 193 | /* GNU DWARF 1 extensions */ |
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| 194 | .debug_srcinfo 0 : { *(.debug_srcinfo) } |
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| 195 | .debug_sfnames 0 : { *(.debug_sfnames) } |
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| 196 | |
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| 197 | /* DWARF 1.1 and DWARF 2 */ |
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| 198 | .debug_aranges 0 : { *(.debug_aranges) } |
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| 199 | .debug_pubnames 0 : { *(.debug_pubnames) } |
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| 200 | |
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| 201 | /* DWARF 2 */ |
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| 202 | .debug_info 0 : { *(.debug_info) } |
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| 203 | .debug_abbrev 0 : { *(.debug_abbrev) } |
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| 204 | .debug_line 0 : { *(.debug_line) } |
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| 205 | .debug_frame 0 : { *(.debug_frame) } |
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| 206 | .debug_str 0 : { *(.debug_str) } |
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| 207 | .debug_loc 0 : { *(.debug_loc) } |
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| 208 | .debug_macinfo 0 : { *(.debug_macinfo) } |
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| 209 | |
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| 210 | /* SGI/MIPS DWARF 2 extensions */ |
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| 211 | .debug_weaknames 0 : { *(.debug_weaknames) } |
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| 212 | .debug_funcnames 0 : { *(.debug_funcnames) } |
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| 213 | .debug_typenames 0 : { *(.debug_typenames) } |
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| 214 | .debug_varnames 0 : { *(.debug_varnames) } |
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| 215 | /* These must appear regardless of . */ |
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[6335022e] | 216 | } |
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