[1] | 1 | MEMORY
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| 2 | {
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| 3 | reset : ORIGIN = 0x00000000, LENGTH = 32
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| 4 | ext_flash : ORIGIN = 0x00000020, LENGTH = 8388576
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| 5 | ext_ram : ORIGIN = 0x09000000, LENGTH = 1048576
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| 6 | onchip_ram_64_kbytes : ORIGIN = 0x02100000, LENGTH = 65536
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| 7 | /* sram_UNUSED : ORIGIN = 0x0a000000, LENGTH = 32
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| 8 | sram : ORIGIN = 0x05000020, LENGTH = 1M-0x20
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| 9 | */
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| 10 | sdram_UNUSED : ORIGIN = 0x0a000000, LENGTH = 32
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| 11 | sdram : ORIGIN = 0x0a000020, LENGTH = 33554368
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| 12 | }
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| 13 |
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| 14 | /* Define symbols for each memory base-address */
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| 15 | __alt_mem_ext_flash = 0x00000000 ;
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| 16 | __alt_mem_ext_ram = 0x00800000 ;
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| 17 | __alt_mem_onchip_ram_64_kbytes = 0x00900000 ;
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| 18 | __alt_mem_sdram = 0x05000000 ;
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| 19 |
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| 20 |
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| 21 | PROVIDE(_hardware_init_hook = 0);
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| 22 | PROVIDE(_software_init_hook = 0);
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| 23 | PROVIDE(software_term_hook = 0);
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| 24 | PROVIDE( __alt_data_end = 0x02000000 );
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| 25 |
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| 26 | OUTPUT_FORMAT( "elf32-littlenios2",
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| 27 | "elf32-littlenios2",
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| 28 | "elf32-littlenios2" )
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| 29 | OUTPUT_ARCH( nios2 )
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| 30 | STARTUP(start.o)
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| 31 | ENTRY(start)
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| 32 |
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| 33 | /* Do we need any of these for elf?
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| 34 | __DYNAMIC = 0;
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| 35 | */
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| 36 |
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| 37 | SECTIONS
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| 38 | {
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| 39 | .entry :
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| 40 | {
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| 41 | KEEP (*(.entry))
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| 42 | } > reset
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| 43 |
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| 44 | .exceptions :
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| 45 | {
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| 46 | . = ALIGN(0x20);
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| 47 | *(.irq)
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| 48 | KEEP (*(.exceptions));
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| 49 | } > sdram
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| 50 |
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| 51 | .text :
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| 52 | {
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| 53 | /*
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| 54 | * All code sections are merged into the text output section, along with
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| 55 | * the read only data sections.
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| 56 | *
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| 57 | */
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| 58 |
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| 59 | PROVIDE (stext = ABSOLUTE(.));
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| 60 |
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| 61 | *(.interp)
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| 62 | *(.hash)
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| 63 | *(.dynsym)
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| 64 | *(.dynstr)
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| 65 | *(.gnu.version)
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| 66 | *(.gnu.version_d)
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| 67 | *(.gnu.version_r)
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| 68 | *(.rel.init)
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| 69 | *(.rela.init)
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| 70 | *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
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| 71 | *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
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| 72 | *(.rel.fini)
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| 73 | *(.rela.fini)
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| 74 | *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
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| 75 | *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
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| 76 | *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
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| 77 | *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
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| 78 | *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)
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| 79 | *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
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| 80 | *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)
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| 81 | *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
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| 82 | *(.rel.ctors)
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| 83 | *(.rela.ctors)
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| 84 | *(.rel.dtors)
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| 85 | *(.rela.dtors)
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| 86 | *(.rel.got)
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| 87 | *(.rela.got)
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| 88 | *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*)
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| 89 | *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*)
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| 90 | *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*)
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| 91 | *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*)
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| 92 | *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*)
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| 93 | *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*)
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| 94 | *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*)
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| 95 | *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*)
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| 96 | *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
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| 97 | *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
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| 98 | *(.rel.plt)
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| 99 | *(.rela.plt)
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| 100 |
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| 101 | KEEP (*(.init))
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| 102 | *(.plt)
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| 103 | *(.text .stub .text.* .gnu.linkonce.t.*)
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| 104 |
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| 105 | /* .gnu.warning sections are handled specially by elf32.em. */
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| 106 |
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| 107 | *(.gnu.warning.*)
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| 108 | KEEP (*(.fini))
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| 109 | PROVIDE (__etext = ABSOLUTE(.));
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| 110 | PROVIDE (_etext = ABSOLUTE(.));
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| 111 | PROVIDE (etext = ABSOLUTE(.));
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| 112 |
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| 113 | *(.eh_frame_hdr)
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| 114 | /* Ensure the __preinit_array_start label is properly aligned. We
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| 115 | could instead move the label definition inside the section, but
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| 116 | the linker would then create the section even if it turns out to
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| 117 | be empty, which isn't pretty. */
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| 118 | . = ALIGN(32 / 8);
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| 119 | PROVIDE (__preinit_array_start = ABSOLUTE(.));
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| 120 | *(.preinit_array)
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| 121 | PROVIDE (__preinit_array_end = ABSOLUTE(.));
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| 122 | PROVIDE (__init_array_start = ABSOLUTE(.));
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| 123 | *(.init_array)
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| 124 | PROVIDE (__init_array_end = ABSOLUTE(.));
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| 125 | PROVIDE (__fini_array_start = ABSOLUTE(.));
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| 126 | *(.fini_array)
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| 127 | PROVIDE (__fini_array_end = ABSOLUTE(.));
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| 128 | SORT(CONSTRUCTORS)
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| 129 | KEEP (*(.eh_frame))
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| 130 | *(.gcc_except_table)
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| 131 | *(.dynamic)
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| 132 |
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| 133 | /* gcc normally uses crtbegin.o to find the start of
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| 134 | the constructors instead nios2 use crtdotors.o,
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| 135 | so we make sure it is
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| 136 | first. Because this is a wildcard, it
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| 137 | doesn't matter if the user does not
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| 138 | actually link against crtdotors.o; the
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| 139 | linker won't look for a file to match a
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| 140 | wildcard. The wildcard also means that it
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| 141 | doesn't matter which directory crtdotors.o
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| 142 | is in. */
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| 143 | KEEP (*crtdotors.o(.ctors))
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| 144 | /* We don't want to include the .ctor section from
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| 145 | from the crtendtors (gcc normally uses crtend.o)
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| 146 | file until after the sorted ctors.
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| 147 | The .ctor section from the crtendtors file contains the
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| 148 | end of ctors marker and it must be last */
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| 149 | KEEP (*(EXCLUDE_FILE (*crtendtors.o ) .ctors))
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| 150 | KEEP (*(SORT(.ctors.*)))
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| 151 | KEEP (*(.ctors))
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| 152 | KEEP (*crtdotors.o(.dtors))
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| 153 | KEEP (*(EXCLUDE_FILE (*crtendtors.o ) .dtors))
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| 154 | KEEP (*(SORT(.dtors.*)))
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| 155 | KEEP (*(.dtors))
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| 156 | KEEP (*(.jcr))
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| 157 | } > sdram
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| 158 |
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| 159 | .rodata :
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| 160 | {
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| 161 | . = ALIGN(32 / 8);
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| 162 | *(.rodata .rodata.* .gnu.linkonce.r.*)
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| 163 | *(.rodata1)
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| 164 | } > sdram
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| 165 |
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| 166 | .rwdata :
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| 167 | {
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| 168 | . = ALIGN(32 / 8);
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| 169 | *(.got.plt) *(.got)
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| 170 | *(.data1)
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| 171 | *(.data .data.* .gnu.linkonce.d.*)
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| 172 |
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| 173 | _gp = ABSOLUTE(. + 0x7ff0);
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| 174 | PROVIDE(gp = _gp);
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| 175 |
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| 176 | *(.sdata .sdata.* .gnu.linkonce.s.*)
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| 177 | *(.sdata2 .sdata2.* .gnu.linkonce.s2.*)
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| 178 |
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| 179 | . = ALIGN(32 / 8);
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| 180 | _edata = ABSOLUTE(.);
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| 181 | PROVIDE (edata = ABSOLUTE(.));
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| 182 | } > sdram
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| 183 |
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| 184 | .bss :
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| 185 | {
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| 186 | __bss_start = ABSOLUTE(.);
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| 187 | PROVIDE (__sbss_start = ABSOLUTE(.));
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| 188 | PROVIDE (___sbss_start = ABSOLUTE(.));
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| 189 |
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| 190 | *(.dynsbss)
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| 191 | *(.sbss .sbss.* .gnu.linkonce.sb.*)
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| 192 | *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*)
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| 193 | *(.scommon)
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| 194 |
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| 195 | PROVIDE (__sbss_end = ABSOLUTE(.));
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| 196 | PROVIDE (___sbss_end = ABSOLUTE(.));
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| 197 |
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| 198 | *(.dynbss)
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| 199 | *(.bss .bss.* .gnu.linkonce.b.*)
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| 200 | *(COMMON)
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| 201 |
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| 202 | . = ALIGN(32 / 8);
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| 203 | __bss_end = ABSOLUTE(.);
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| 204 | } > sdram
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| 205 |
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| 206 | /*
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| 207 | * One output section for each of the available partitions. These are not
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| 208 | * used by default, but can be used by users applications using the .section
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| 209 | * directive.
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| 210 | *
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| 211 | * The memory partition used for the heap is treated in special way, i.e. a
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| 212 | * symbol is added to point to the heap start.
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| 213 | *
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| 214 | */
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| 215 |
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| 216 | .ext_flash :
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| 217 | {
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| 218 | PROVIDE (_alt_partition_ext_flash_start = ABSOLUTE(.));
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| 219 | *(.ext_flash)
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| 220 | . = ALIGN(32 / 8);
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| 221 | PROVIDE (_alt_partition_ext_flash_end = ABSOLUTE(.));
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| 222 | } > ext_flash
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| 223 | /*
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| 224 | .sram :
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| 225 | {
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| 226 | PROVIDE (_alt_partition_sram_start = ABSOLUTE(.));
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| 227 | *(.sram)
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| 228 | . = ALIGN(32 / 8);
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| 229 | PROVIDE (_alt_partition_sram_end = ABSOLUTE(.));
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| 230 | _end = ABSOLUTE(.);
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| 231 | PROVIDE (end = ABSOLUTE(.));
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| 232 | } > sram
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| 233 | */
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| 234 | .onchip_ram_64_kbytes :
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| 235 | {
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| 236 | PROVIDE (_alt_partition_onchip_ram_64_kbytes_start = ABSOLUTE(.));
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| 237 | *(.onchip_ram_64_kbytes)
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| 238 | . = ALIGN(32 / 8);
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| 239 | PROVIDE (_alt_partition_onchip_ram_64_kbytes_end = ABSOLUTE(.));
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| 240 | } > onchip_ram_64_kbytes
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| 241 |
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| 242 | .sdram :
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| 243 | {
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| 244 | PROVIDE (_alt_partition_sdram_start = ABSOLUTE(.));
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| 245 | *(.sdram)
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| 246 | . = ALIGN(32 / 8);
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| 247 | PROVIDE (_alt_partition_sdram_end = ABSOLUTE(.));
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| 248 | _end = ABSOLUTE(.);
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| 249 | PROVIDE (end = ABSOLUTE(.));
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| 250 | } > sdram
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| 251 |
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| 252 | .nlsdram (NOLOAD):
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| 253 | {
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| 254 | PROVIDE (_alt_partition_nlsdram_start = ABSOLUTE(.));
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| 255 | *(.nlsdram)
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| 256 | . = ALIGN(32 / 8);
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| 257 | PROVIDE (_alt_partition_nlsdram_end = ABSOLUTE(.));
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| 258 | _end = ABSOLUTE(.);
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| 259 | PROVIDE (end = ABSOLUTE(.));
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| 260 | } > sdram
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| 261 |
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| 262 | /*
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| 263 | * Stabs debugging sections.
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| 264 | *
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| 265 | */
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| 266 |
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| 267 | .stab 0 : { *(.stab) }
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| 268 | .stabstr 0 : { *(.stabstr) }
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| 269 | .stab.excl 0 : { *(.stab.excl) }
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| 270 | .stab.exclstr 0 : { *(.stab.exclstr) }
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| 271 | .stab.index 0 : { *(.stab.index) }
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| 272 | .stab.indexstr 0 : { *(.stab.indexstr) }
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| 273 | .comment 0 : { *(.comment) }
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| 274 | /* DWARF debug sections.
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| 275 | Symbols in the DWARF debugging sections are relative to the beginning
|
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| 276 | of the section so we begin them at 0. */
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| 277 | /* DWARF 1 */
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| 278 | .debug 0 : { *(.debug) }
|
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| 279 | .line 0 : { *(.line) }
|
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| 280 | /* GNU DWARF 1 extensions */
|
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| 281 | .debug_srcinfo 0 : { *(.debug_srcinfo) }
|
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| 282 | .debug_sfnames 0 : { *(.debug_sfnames) }
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| 283 | /* DWARF 1.1 and DWARF 2 */
|
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| 284 | .debug_aranges 0 : { *(.debug_aranges) }
|
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| 285 | .debug_pubnames 0 : { *(.debug_pubnames) }
|
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| 286 | /* DWARF 2 */
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| 287 | .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
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| 288 | .debug_abbrev 0 : { *(.debug_abbrev) }
|
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| 289 | .debug_line 0 : { *(.debug_line) }
|
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| 290 | .debug_frame 0 : { *(.debug_frame) }
|
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| 291 | .debug_str 0 : { *(.debug_str) }
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| 292 | .debug_loc 0 : { *(.debug_loc) }
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| 293 | .debug_macinfo 0 : { *(.debug_macinfo) }
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| 294 | /* SGI/MIPS DWARF 2 extensions */
|
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| 295 | .debug_weaknames 0 : { *(.debug_weaknames) }
|
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| 296 | .debug_funcnames 0 : { *(.debug_funcnames) }
|
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| 297 | .debug_typenames 0 : { *(.debug_typenames) }
|
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| 298 | .debug_varnames 0 : { *(.debug_varnames) }
|
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| 299 | }
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| 300 | /* provide a pointer for the stack */
|
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