[8ef3818] | 1 | /* |
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| 2 | * This file contains directives for the GNU linker that are specific |
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| 3 | * to the MBX860-2 board. |
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| 4 | * |
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| 5 | * $Id$ |
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| 6 | */ |
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| 7 | |
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| 8 | OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc") |
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| 9 | OUTPUT_ARCH(powerpc) |
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| 10 | ENTRY(start) |
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| 11 | |
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| 12 | /* |
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| 13 | * Declare some sizes. |
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| 14 | * XXX: The assignment of ". += XyzSize;" fails in older gld's if the |
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| 15 | * number used there is not constant. If this happens to you, edit |
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| 16 | * the lines marked XXX below to use a constant value. |
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| 17 | */ |
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| 18 | HeapSize = DEFINED(HeapSize) ? HeapSize : 0x100000; /* 1M Heap */ |
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| 19 | StackSize = DEFINED(StackSize) ? StackSize : 0x1000; |
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| 20 | |
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| 21 | MEMORY |
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| 22 | { |
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| 23 | ram : org = 0x0, l = 4M |
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| 24 | nvram : org = 0xfa000000, l = 32K |
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| 25 | dpram : org = 0xfa200000, l = 16K |
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| 26 | flash : org = 0xfc000000, l = 2M |
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| 27 | immr : org = 0xfa200000, l = 16K |
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| 28 | } |
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| 29 | |
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| 30 | |
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| 31 | SECTIONS |
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| 32 | { |
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| 33 | /* |
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| 34 | * If the vectors are specified statically rather than created at run time, |
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| 35 | * accumulate them starting at VMA 0x0. |
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| 36 | */ |
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| 37 | .vectors : |
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| 38 | { |
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| 39 | *(.vectors) |
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| 40 | } >ram |
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| 41 | |
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| 42 | /* |
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| 43 | * The stack will live in this area - between the vectors and |
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| 44 | * the text section. |
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| 45 | */ |
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| 46 | |
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| 47 | .text 0x10000: |
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| 48 | { |
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| 49 | /* Read-only sections, merged into text segment: */ |
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| 50 | |
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| 51 | text.start = .; |
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| 52 | |
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| 53 | /* Entry point is the .entry section */ |
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| 54 | *(.entry) |
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| 55 | *(.entry2) |
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| 56 | |
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| 57 | /* Actual code */ |
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| 58 | *(.text) |
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| 59 | *(.text.*) |
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| 60 | |
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| 61 | /* C++ constructors/destructors */ |
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| 62 | *(.gnu.linkonce.t*) |
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| 63 | |
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| 64 | /* Initialization and finalization code. |
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| 65 | * |
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| 66 | * Various files can provide initialization and finalization functions. |
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| 67 | * The bodies of these functions are in .init and .fini sections. We |
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| 68 | * accumulate the bodies here, and prepend function prologues from |
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| 69 | * ecrti.o and function epilogues from ecrtn.o. ecrti.o must be linked |
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| 70 | * first; ecrtn.o must be linked last. Because these are wildcards, it |
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| 71 | * doesn't matter if the user does not actually link against ecrti.o and |
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| 72 | * ecrtn.o; the linker won't look for a file to match a wildcard. The |
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| 73 | * wildcard also means that it doesn't matter which directory ecrti.o |
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| 74 | * and ecrtn.o are in. |
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| 75 | */ |
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| 76 | PROVIDE (_init = .); |
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| 77 | *ecrti.o(.init) |
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| 78 | *(.init) |
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| 79 | *ecrtn.o(.init) |
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| 80 | |
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| 81 | PROVIDE (_fini = .); |
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| 82 | *ecrti.o(.fini) |
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| 83 | *(.fini) |
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| 84 | *ecrtn.o(.init) |
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| 85 | |
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| 86 | /* |
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| 87 | * C++ constructors and destructors for static objects. |
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| 88 | * PowerPC EABI does not use crtstuff yet, so we build "old-style" |
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| 89 | * constructor and destructor lists that begin with the list lenght |
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| 90 | * end terminate with a NULL entry. |
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| 91 | */ |
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| 92 | |
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| 93 | PROVIDE (__CTOR_LIST__ = .); |
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| 94 | /* LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2) */ |
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| 95 | *crtbegin.o(.ctors) |
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| 96 | *(.ctors) |
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| 97 | *crtend.o(.ctors) |
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| 98 | LONG(0) |
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| 99 | PROVIDE (__CTOR_END__ = .); |
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| 100 | |
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| 101 | PROVIDE (__DTOR_LIST__ = .); |
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| 102 | /* LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2) */ |
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| 103 | *crtbegin.o(.dtors) |
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| 104 | *(.dtors) |
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| 105 | *crtend.o(.dtors) |
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| 106 | LONG(0) |
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| 107 | PROVIDE (__DTOR_END__ = .); |
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| 108 | |
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| 109 | /* Exception frame info */ |
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| 110 | *(.eh_frame) |
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| 111 | |
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| 112 | /* Miscellaneous read-only data */ |
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| 113 | _rodata_start = . ; |
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| 114 | *(.gnu.linkonce.r*) |
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| 115 | *(.lit) |
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| 116 | *(.shdata) |
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| 117 | *(.rodata) |
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| 118 | *(.rodata1) |
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| 119 | *(.descriptors) |
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| 120 | *(rom_ver) |
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| 121 | _erodata = .; |
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| 122 | |
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| 123 | |
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| 124 | /* Various possible names for the end of the .text section */ |
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| 125 | etext = ALIGN(0x10); |
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| 126 | _etext = .; |
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| 127 | _endtext = .; |
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| 128 | text.end = .; |
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| 129 | PROVIDE (etext = .); |
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| 130 | PROVIDE (__etext = .); |
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| 131 | } > ram |
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| 132 | |
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| 133 | /* R/W Data */ |
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| 134 | .data : |
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| 135 | { |
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| 136 | data_start = .; |
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| 137 | |
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| 138 | *(.data) |
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| 139 | *(.data.*) |
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| 140 | *(.data1) |
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| 141 | |
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| 142 | PROVIDE (__SDATA_START__ = .); |
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| 143 | *(.sdata) |
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| 144 | *(.gnu.linkonce.d*) |
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| 145 | PROVIDE (__SDATA_END__ = .); |
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| 146 | |
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| 147 | PROVIDE (__EXCEPT_START__ = .); |
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| 148 | *(.gcc_except_table) |
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| 149 | PROVIDE (__EXCEPT_END__ = .); |
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| 150 | |
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| 151 | PROVIDE(__GOT_START__ = .); |
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| 152 | *(.got.plt) |
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| 153 | *(.got) |
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| 154 | PROVIDE(__GOT_END__ = .); |
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| 155 | |
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| 156 | *(.got1) |
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| 157 | |
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| 158 | PROVIDE (__GOT2_START__ = .); |
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| 159 | PROVIDE (_GOT2_START_ = .); |
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| 160 | *(.got2) |
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| 161 | PROVIDE (__GOT2_END__ = .); |
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| 162 | PROVIDE (_GOT2_END_ = .); |
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| 163 | |
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| 164 | PROVIDE (__FIXUP_START__ = .); |
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| 165 | PROVIDE (_FIXUP_START_ = .); |
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| 166 | *(.fixup) |
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| 167 | PROVIDE (_FIXUP_END_ = .); |
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| 168 | PROVIDE (__FIXUP_END__ = .); |
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| 169 | |
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| 170 | /* We want the small data sections together, so single-instruction offsets |
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| 171 | * can access them all. |
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| 172 | */ |
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| 173 | PROVIDE (__SDATA2_START__ = .); |
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| 174 | *(.sdata2) |
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| 175 | PROVIDE (__SDATA2_END__ = .); |
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| 176 | } > ram |
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| 177 | |
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| 178 | |
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| 179 | .bss : |
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| 180 | { |
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| 181 | PROVIDE (__SBSS_START__ = .); |
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| 182 | |
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| 183 | PROVIDE (__SBSS2_START__ = .); |
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| 184 | *(.sbss2) |
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| 185 | PROVIDE (__SBSS2_END__ = .); |
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| 186 | |
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| 187 | bss.start = .; |
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| 188 | *(.bss) |
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| 189 | *(.sbss) |
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| 190 | *(COMMON) |
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| 191 | . = ALIGN(4); |
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| 192 | bss.end = .; |
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| 193 | |
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| 194 | PROVIDE (__SBSS_END__ = .); |
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| 195 | |
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| 196 | } > ram |
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| 197 | |
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| 198 | bss.size = bss.end - bss.start; |
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| 199 | text.size = text.end - text.start; |
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| 200 | PROVIDE(_end = bss.end); |
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| 201 | |
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| 202 | _HeapStart = .; |
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| 203 | __HeapStart = .; |
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| 204 | . += HeapSize; /* XXX -- Old gld can't handle this */ |
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| 205 | /* . += 0x80000; */ /* HeapSize for old gld */ |
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| 206 | _HeapEnd = .; |
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| 207 | __HeapEnd = .; |
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| 208 | clear_end = .; |
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| 209 | |
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| 210 | _WorkspaceBase = .; |
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| 211 | __WorkspaceBase = .; |
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| 212 | |
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| 213 | dpram : |
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| 214 | { |
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| 215 | m8xx = .; |
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| 216 | _m8xx = .; |
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| 217 | . += (16 * 1024); |
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| 218 | } >immr |
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| 219 | |
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| 220 | /* Stabs debugging sections. */ |
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| 221 | .stab 0 : { *(.stab) } |
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| 222 | .stabstr 0 : { *(.stabstr) } |
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| 223 | .stab.excl 0 : { *(.stab.excl) } |
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| 224 | .stab.exclstr 0 : { *(.stab.exclstr) } |
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| 225 | .stab.index 0 : { *(.stab.index) } |
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| 226 | .stab.indexstr 0 : { *(.stab.indexstr) } |
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| 227 | .comment 0 : { *(.comment) } |
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| 228 | |
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| 229 | /* DWARF debug sections. |
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| 230 | Symbols in the DWARF debugging sections are relative to the beginning |
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| 231 | of the section so we begin them at 0. */ |
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| 232 | /* DWARF 1 */ |
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| 233 | .debug 0 : { *(.debug) } |
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| 234 | .line 0 : { *(.line) } |
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| 235 | |
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| 236 | /* GNU DWARF 1 extensions */ |
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| 237 | .debug_srcinfo 0 : { *(.debug_srcinfo) } |
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| 238 | .debug_sfnames 0 : { *(.debug_sfnames) } |
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| 239 | |
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| 240 | /* DWARF 1.1 and DWARF 2 */ |
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| 241 | .debug_aranges 0 : { *(.debug_aranges) } |
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| 242 | .debug_pubnames 0 : { *(.debug_pubnames) } |
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| 243 | |
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| 244 | /* DWARF 2 */ |
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| 245 | .debug_info 0 : { *(.debug_info) } |
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| 246 | .debug_abbrev 0 : { *(.debug_abbrev) } |
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| 247 | .debug_line 0 : { *(.debug_line) } |
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| 248 | .debug_frame 0 : { *(.debug_frame) } |
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| 249 | .debug_str 0 : { *(.debug_str) } |
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| 250 | .debug_loc 0 : { *(.debug_loc) } |
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| 251 | .debug_macinfo 0 : { *(.debug_macinfo) } |
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| 252 | |
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| 253 | /* SGI/MIPS DWARF 2 extensions */ |
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| 254 | .debug_weaknames 0 : { *(.debug_weaknames) } |
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| 255 | .debug_funcnames 0 : { *(.debug_funcnames) } |
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| 256 | .debug_typenames 0 : { *(.debug_typenames) } |
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| 257 | .debug_varnames 0 : { *(.debug_varnames) } |
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| 258 | /* These must appear regardless of . */ |
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| 259 | } |
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