[444] | 1 | /* Default linker script, for normal executables |
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| 2 | |
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| 3 | Copyright (c) 2008, 2009 Xilinx, Inc. All rights reserved. |
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| 4 | |
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| 5 | Redistribution and use in source and binary forms, with or without |
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| 6 | modification, are permitted provided that the following conditions are |
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| 7 | met: |
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| 8 | |
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| 9 | 1. Redistributions source code must retain the above copyright notice, |
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| 10 | this list of conditions and the following disclaimer. |
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| 11 | |
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| 12 | 2. Redistributions in binary form must reproduce the above copyright |
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| 13 | notice, this list of conditions and the following disclaimer in the |
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| 14 | documentation and/or other materials provided with the distribution. |
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| 15 | |
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| 16 | 3. Neither the name of Xilinx nor the names of its contributors may be |
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| 17 | used to endorse or promote products derived from this software without |
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| 18 | specific prior written permission. |
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| 19 | |
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| 20 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS |
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| 21 | IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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| 22 | TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
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| 23 | PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| 24 | HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 25 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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| 26 | TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 27 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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| 28 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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| 29 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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| 30 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 31 | */ |
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| 32 | |
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| 33 | OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", |
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| 34 | "elf32-powerpc") |
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| 35 | OUTPUT_ARCH(powerpc:common) |
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| 36 | ENTRY(_boot) |
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| 37 | _START_ADDR = DEFINED(_START_ADDR) ? _START_ADDR : 0xFFFF0000; |
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| 38 | _STACK_SIZE = DEFINED(_STACK_SIZE) ? _STACK_SIZE : 4k; |
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| 39 | _HEAP_SIZE = DEFINED(_HEAP_SIZE) ? _HEAP_SIZE : 4k; |
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| 40 | STARTUP(boot.o) |
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| 41 | /* Do we need any of these for elf? |
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| 42 | __DYNAMIC = 0; */ |
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| 43 | PROVIDE (__stack = 0); PROVIDE (___stack = 0); |
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| 44 | SECTIONS |
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| 45 | { |
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| 46 | |
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| 47 | . = _START_ADDR; |
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| 48 | .vectors BLOCK (64k): |
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| 49 | { |
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| 50 | *(.vectors) |
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| 51 | } |
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| 52 | /* Read-only sections, merged into text segment: */ |
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| 53 | .hash : { *(.hash) } |
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| 54 | .dynsym : { *(.dynsym) } |
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| 55 | .dynstr : { *(.dynstr) } |
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| 56 | .gnu.version : { *(.gnu.version) } |
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| 57 | .gnu.version_d : { *(.gnu.version_d) } |
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| 58 | .gnu.version_r : { *(.gnu.version_r) } |
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| 59 | .rela.text : |
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| 60 | { |
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| 61 | *(.rela.text) |
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| 62 | *(.rela.text.*) |
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| 63 | *(.rela.gnu.linkonce.t*) |
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| 64 | } |
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| 65 | .rela.data : |
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| 66 | { |
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| 67 | *(.rela.data) |
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| 68 | *(.rela.data.*) |
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| 69 | *(.rela.gnu.linkonce.d*) |
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| 70 | } |
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| 71 | .rela.rodata : |
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| 72 | { |
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| 73 | *(.rela.rodata) |
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| 74 | *(.rela.rodata.*) |
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| 75 | *(.rela.gnu.linkonce.r*) |
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| 76 | } |
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| 77 | .rela.got : { *(.rela.got) } |
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| 78 | .rela.got1 : { *(.rela.got1) } |
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| 79 | .rela.got2 : { *(.rela.got2) } |
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| 80 | .rela.ctors : { *(.rela.ctors) } |
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| 81 | .rela.dtors : { *(.rela.dtors) } |
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| 82 | .rela.init : { *(.rela.init) } |
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| 83 | .rela.fini : { *(.rela.fini) } |
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| 84 | .rela.bss : { *(.rela.bss) } |
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| 85 | .rela.plt : { *(.rela.plt) } |
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| 86 | .rela.sdata : { *(.rela.sdata) } |
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| 87 | .rela.sbss : { *(.rela.sbss) } |
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| 88 | .rela.sdata2 : { *(.rela.sdata2) } |
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| 89 | .rela.sbss2 : { *(.rela.sbss2) } |
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| 90 | .text : |
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| 91 | { |
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| 92 | *(.text) |
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| 93 | *(.text.*) |
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| 94 | /* .gnu.warning sections are handled specially by elf32.em. */ |
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| 95 | *(.gnu.warning) |
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| 96 | *(.gnu.linkonce.t.*) |
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| 97 | } =0 |
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| 98 | .init : { KEEP (*(.init)) } =0 |
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| 99 | .fini : { KEEP (*(.fini)) } =0 |
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| 100 | .rodata : |
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| 101 | { |
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| 102 | *(.rodata) |
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| 103 | *(.rodata.*) |
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| 104 | *(.gnu.linkonce.r.*) |
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| 105 | } |
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| 106 | .rodata1 : { *(.rodata1) } |
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| 107 | _etext = .; |
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| 108 | PROVIDE (etext = .); |
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| 109 | PROVIDE (__etext = .); |
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| 110 | .sdata2 : { *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*)} |
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| 111 | __SDATA2_START__ = ADDR(.sdata2); |
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| 112 | __SDATA2_END__ = ADDR(.sdata2) + SIZEOF(.sdata2); |
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| 113 | .sbss2 : { *(.sbss2) *(.gnu.linkonce.sb2.*)} |
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| 114 | __SBSS2_START__ = ADDR(.sbss2); |
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| 115 | __SBSS2_END__ = ADDR(.sbss2) + SIZEOF(.sbss2); |
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| 116 | /* Adjust the address for the data segment. We want to adjust up to |
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| 117 | the same address within the page on the next page up. It would |
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| 118 | be more correct to do this: |
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| 119 | . = ALIGN(0x08) + (ALIGN(8) & (0x08 - 1)); |
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| 120 | The current expression does not correctly handle the case of a |
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| 121 | text segment ending precisely at the end of a page; it causes the |
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| 122 | data segment to skip a page. The above expression does not have |
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| 123 | this problem, but it will currently (2/95) cause BFD to allocate |
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| 124 | a single segment, combining both text and data, for this case. |
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| 125 | This will prevent the text segment from being shared among |
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| 126 | multiple executions of the program; I think that is more |
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| 127 | important than losing a page of the virtual address space (note |
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| 128 | that no actual memory is lost; the page which is skipped can not |
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| 129 | be referenced). */ |
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| 130 | /* . = ALIGN(8) + 0x08;*/ |
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| 131 | .data : |
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| 132 | { |
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| 133 | *(.data) |
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| 134 | *(.data.*) |
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| 135 | *(.gnu.linkonce.d*) |
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| 136 | CONSTRUCTORS |
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| 137 | } |
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| 138 | .data1 : { *(.data1) } |
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| 139 | .got1 : { *(.got1) } |
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| 140 | .dynamic : { *(.dynamic) } |
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| 141 | /* Put .ctors and .dtors next to the .got2 section, so that the pointers |
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| 142 | get relocated with -mrelocatable. Also put in the .fixup pointers. |
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| 143 | The current compiler no longer needs this, but keep it around for 2.7.2 */ |
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| 144 | PROVIDE (_GOT2_START_ = .); |
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| 145 | PROVIDE (__GOT2_START_ = .); |
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| 146 | .got2 : { *(.got2) } |
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| 147 | PROVIDE (__CTOR_LIST__ = .); |
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| 148 | PROVIDE (___CTOR_LIST__ = .); |
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| 149 | .ctors : |
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| 150 | { |
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| 151 | /* gcc uses crtbegin.o to find the start of |
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| 152 | the constructors, so we make sure it is |
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| 153 | first. Because this is a wildcard, it |
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| 154 | doesn't matter if the user does not |
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| 155 | actually link against crtbegin.o; the |
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| 156 | linker won't look for a file to match a |
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| 157 | wildcard. The wildcard also means that it |
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| 158 | doesn't matter which directory crtbegin.o |
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| 159 | is in. */ |
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| 160 | KEEP (*crtbegin.o(.ctors)) |
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| 161 | /* We don't want to include the .ctor section from |
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| 162 | from the crtend.o file until after the sorted ctors. |
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| 163 | The .ctor section from the crtend file contains the |
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| 164 | end of ctors marker and it must be last */ |
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| 165 | KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) |
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| 166 | KEEP (*(SORT(.ctors.*))) |
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| 167 | KEEP (*(.ctors)) |
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| 168 | } |
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| 169 | PROVIDE (__CTOR_END__ = .); |
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| 170 | PROVIDE (___CTOR_END__ = .); |
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| 171 | PROVIDE (__DTOR_LIST__ = .); |
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| 172 | PROVIDE (___DTOR_LIST__ = .); |
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| 173 | .dtors : |
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| 174 | { |
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| 175 | KEEP (*crtbegin.o(.dtors)) |
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| 176 | KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) |
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| 177 | KEEP (*(SORT(.dtors.*))) |
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| 178 | KEEP (*(.dtors)) |
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| 179 | } |
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| 180 | PROVIDE (__DTOR_END__ = .); |
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| 181 | PROVIDE (___DTOR_END__ = .); |
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| 182 | PROVIDE (_FIXUP_START_ = .); |
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| 183 | PROVIDE (__FIXUP_START_ = .); |
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| 184 | .fixup : { *(.fixup) } |
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| 185 | PROVIDE (_FIXUP_END_ = .); |
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| 186 | PROVIDE (__FIXUP_END_ = .); |
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| 187 | PROVIDE (_GOT2_END_ = .); |
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| 188 | PROVIDE (__GOT2_END_ = .); |
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| 189 | PROVIDE (_GOT_START_ = .); |
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| 190 | PROVIDE (__GOT_START_ = .); |
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| 191 | .got : { *(.got) } |
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| 192 | .got.plt : { *(.got.plt) } |
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| 193 | PROVIDE (_GOT_END_ = .); |
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| 194 | PROVIDE (__GOT_END_ = .); |
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| 195 | /* Added by Sathya to handle C++ exceptions */ |
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| 196 | .eh_frame : { |
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| 197 | *(.eh_frame) |
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| 198 | } |
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| 199 | .jcr : { |
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| 200 | *(.jcr) |
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| 201 | } |
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| 202 | .gcc_except_table : { |
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| 203 | *(.gcc_except_table) |
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| 204 | } |
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| 205 | /* We want the small data sections together, so single-instruction offsets |
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| 206 | can access them all, and initialized data all before uninitialized, so |
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| 207 | we can shorten the on-disk segment size. */ |
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| 208 | .sdata : { *(.sdata) *(.sdata.*) *(.gnu.linkonce.s.*)} |
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| 209 | __SDATA_START__ = ADDR(.sdata); |
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| 210 | __SDATA_END__ = ADDR(.sdata) + SIZEOF(.sdata); |
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| 211 | _edata = .; |
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| 212 | PROVIDE (edata = .); |
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| 213 | PROVIDE (__edata = .); |
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| 214 | .sbss : |
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| 215 | { |
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| 216 | __sbss_start = .; |
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| 217 | ___sbss_start = .; |
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| 218 | *(.sbss) |
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| 219 | *(.sbss.*) |
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| 220 | *(.gnu.linkonce.sb.*) |
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| 221 | *(.scommon) |
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| 222 | *(.dynsbss) |
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| 223 | __sbss_end = .; |
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| 224 | ___sbss_end = .; |
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| 225 | } |
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| 226 | .plt : { *(.plt) } |
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| 227 | .bss : |
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| 228 | { |
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| 229 | __bss_start = .; |
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| 230 | ___bss_start = .; |
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| 231 | *(.dynbss) |
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| 232 | *(.bss) |
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| 233 | *(.bss.*) |
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| 234 | *(.gnu.linkonce.b.*) |
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| 235 | *(COMMON) |
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| 236 | . = ALIGN(4); |
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| 237 | __bss_end = .; |
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| 238 | } |
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| 239 | |
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| 240 | .stack : |
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| 241 | { |
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| 242 | _stack_end = .; |
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| 243 | . = . + _STACK_SIZE; |
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| 244 | . = ALIGN(16); |
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| 245 | __stack = .; |
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| 246 | } |
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| 247 | |
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| 248 | .heap : |
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| 249 | { |
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| 250 | _heap_start = .; |
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| 251 | . = . + _HEAP_SIZE; |
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| 252 | . = ALIGN(16); |
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| 253 | _heap_end = .; |
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| 254 | } |
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| 255 | |
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| 256 | .tdata : { |
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| 257 | *(.tdata) |
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| 258 | *(.tdata.*) |
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| 259 | *(.gnu.linkonce.td.*) |
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| 260 | } |
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| 261 | .tbss : { |
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| 262 | *(.tbss) |
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| 263 | *(.gnu.linkonce.tb.*) |
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| 264 | } |
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| 265 | /* Check to see if boot0 is going to be within 24bits from boot */ |
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| 266 | /* If so, then leave the location counter as is. */ |
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| 267 | /* If not, then make location counter to be 0x20 locations above boot location */ |
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| 268 | /* This assumes that a BRAM is present for boot and hence 0x20 locations above it are valid */ |
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| 269 | /* This fixes CR 183394 */ |
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| 270 | __boot0_flag__ = ((. > 0x00ffffff) && (. < 0xff000000)) ? 1 : 0; |
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| 271 | . = (__boot0_flag__) ? 0xffffffdc : .; |
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| 272 | .boot0 : { *(.boot0)} |
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| 273 | _end = . ; |
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| 274 | end = .; |
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| 275 | __end = .; |
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| 276 | .boot 0xFFFFFFFC : { *(.boot) } |
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| 277 | /* These are needed for ELF backends which have not yet been |
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| 278 | converted to the new style linker. */ |
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| 279 | .stab 0 : { *(.stab) } |
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| 280 | .stabstr 0 : { *(.stabstr) } |
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| 281 | /* DWARF debug sections. |
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| 282 | Symbols in the DWARF debugging sections are relative to the beginning |
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| 283 | of the section so we begin them at 0. */ |
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| 284 | /* DWARF 1 */ |
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| 285 | .debug 0 : { *(.debug) } |
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| 286 | .line 0 : { *(.line) } |
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| 287 | /* GNU DWARF 1 extensions */ |
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| 288 | .debug_srcinfo 0 : { *(.debug_srcinfo) } |
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| 289 | .debug_sfnames 0 : { *(.debug_sfnames) } |
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| 290 | /* DWARF 1.1 and DWARF 2 */ |
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| 291 | .debug_aranges 0 : { *(.debug_aranges) } |
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| 292 | .debug_pubnames 0 : { *(.debug_pubnames) } |
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| 293 | /* DWARF 2 */ |
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| 294 | .debug_info 0 : { *(.debug_info) } |
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| 295 | .debug_abbrev 0 : { *(.debug_abbrev) } |
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| 296 | .debug_line 0 : { *(.debug_line) } |
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| 297 | .debug_frame 0 : { *(.debug_frame) } |
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| 298 | .debug_str 0 : { *(.debug_str) } |
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| 299 | .debug_loc 0 : { *(.debug_loc) } |
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| 300 | .debug_macinfo 0 : { *(.debug_macinfo) } |
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| 301 | /* SGI/MIPS DWARF 2 extensions */ |
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| 302 | .debug_weaknames 0 : { *(.debug_weaknames) } |
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| 303 | .debug_funcnames 0 : { *(.debug_funcnames) } |
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| 304 | .debug_typenames 0 : { *(.debug_typenames) } |
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| 305 | .debug_varnames 0 : { *(.debug_varnames) } |
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| 306 | /* These must appear regardless of . */ |
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| 307 | } |
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