283 lines
11 KiB
Plaintext
283 lines
11 KiB
Plaintext
|
OUTPUT_FORMAT("elf32-ms1", "elf32-ms1", "elf32-ms1")
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OUTPUT_ARCH(ms1)
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ENTRY(__boot_start)
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SEARCH_DIR(/usr/local/mrisc1-elf/lib);
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/* Do we need any of these for elf?
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__DYNAMIC = 0; */
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MEMORY
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{
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rom (rx) : ORIGIN = 0x000000, LENGTH = 8M
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frame-buffer (w) : ORIGIN = 0x800000, LENGTH = 64K
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ram (w) : ORIGIN = 0xc00000, LENGTH = 4M
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dma-ram (w) : ORIGIN = 0x1000000, LENGTH = 16M
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}
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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PROVIDE (__executable_start = 0x0); . = 0x0;
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.interp : { *(.interp) }
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.hash : { *(.hash) }
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.dynsym : { *(.dynsym) }
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.dynstr : { *(.dynstr) }
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.gnu.version : { *(.gnu.version) }
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.gnu.version_d : { *(.gnu.version_d) }
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.gnu.version_r : { *(.gnu.version_r) }
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.rel.init : { *(.rel.init) }
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.rela.init : { *(.rela.init) }
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.rel.text : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
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.rela.text : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
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.rel.fini : { *(.rel.fini) }
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.rela.fini : { *(.rela.fini) }
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.rel.rodata : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
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.rela.rodata : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
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.rel.data.rel.ro : { *(.rel.data.rel.ro*) }
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.rela.data.rel.ro : { *(.rel.data.rel.ro*) }
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.rel.data : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
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.rela.data : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
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.rel.tdata : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
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.rela.tdata : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
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.rel.tbss : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
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.rela.tbss : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
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.rel.ctors : { *(.rel.ctors) }
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.rela.ctors : { *(.rela.ctors) }
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.rel.dtors : { *(.rel.dtors) }
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.rela.dtors : { *(.rela.dtors) }
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.rel.got : { *(.rel.got) }
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.rela.got : { *(.rela.got) }
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.rel.sdata : { *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) }
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.rela.sdata : { *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) }
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.rel.sbss : { *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) }
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.rela.sbss : { *(.rela.sbss .rela.sbss.* .rel.gnu.linkonce.sb.*) }
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.rel.sdata2 : { *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) }
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.rela.sdata2 : { *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) }
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.rel.sbss2 : { *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) }
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.rela.sbss2 : { *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) }
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.rel.bss : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
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.rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
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.rel.plt : { *(.rel.plt) }
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.rela.plt : { *(.rela.plt) }
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.startup : { *startup-64-001.o(.startup) } >rom =0
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.init : { KEEP (*(.init)) } >rom =0
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.plt : { *(.plt) } >rom
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.text :
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{
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*startup-64-001.o(.text)
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*(.text .stub .text.* .gnu.linkonce.t.*)
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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} >rom =0
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.fini :
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{
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KEEP (*(.fini))
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} >rom =0
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PROVIDE (__etext = .);
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PROVIDE (_etext = .);
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PROVIDE (etext = .);
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.rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } >rom
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.rodata1 : { *(.rodata1) } >rom
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/* Data starting here needs to be copied from ROM to the frame buffer. */
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/* Section .sdata2 is used as the beginning marker of the frame buffer
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address as well as the start of the data that needs to be copied. */
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.sdata2 : AT (ADDR(.rodata1) + SIZEOF(.rodata1))
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{ *(.sdata2 .sdata2.* .gnu.linkonce.s2.*) } >frame-buffer
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.sbss2 : AT (LOADADDR(.sdata2) + SIZEOF(.sdata2))
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{ *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) } >frame-buffer
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.eh_frame_hdr : AT (LOADADDR(.sbss2) + SIZEOF(.sbss2))
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{ *(.eh_frame_hdr) } >frame-buffer
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.eh_frame : AT (LOADADDR(.eh_frame_hdr) + SIZEOF(.eh_frame_hdr))
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ONLY_IF_RO { KEEP (*(.eh_frame)) } >frame-buffer
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.gcc_except_table : AT (LOADADDR(.eh_frame) + SIZEOF(.eh_frame))
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ONLY_IF_RO { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) } >frame-buffer
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/* Adjust the address for the data segment. We want to adjust up to
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the same address within the page on the next page up. */
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. = ALIGN(256) + (. & (256 - 1));
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/* Exception handling */
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.eh_frame : AT (LOADADDR(.eh_frame_hdr) + SIZEOF(.eh_frame_hdr))
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ONLY_IF_RW { KEEP (*(.eh_frame)) } >frame-buffer
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.gcc_except_table : AT (LOADADDR(.eh_frame) + SIZEOF(.eh_frame))
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ONLY_IF_RW { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) } >frame-buffer
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/* Thread Local Storage sections */
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.tdata : AT (LOADADDR(.gcc_except_table) + SIZEOF(.gcc_except_table))
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{ *(.tdata .tdata.* .gnu.linkonce.td.*) } >frame-buffer
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.tbss : AT (LOADADDR(.tdata) + SIZEOF(.tdata))
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{ *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) } >frame-buffer
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/* Ensure the __preinit_array_start label is properly aligned. We
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could instead move the label definition inside the section, but
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the linker would then create the section even if it turns out to
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be empty, which isn't pretty. */
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. = ALIGN(32 / 8);
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PROVIDE (__preinit_array_start = .);
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.preinit_array : AT (LOADADDR(.tbss) + SIZEOF(.tbss))
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{ *(.preinit_array) } >frame-buffer
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PROVIDE (__preinit_array_end = .);
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PROVIDE (__init_array_start = .);
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.init_array : AT (LOADADDR(.preinit_array) + SIZEOF(.preinit_array))
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{ *(.init_array) } >frame-buffer
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PROVIDE (__init_array_end = .);
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PROVIDE (__fini_array_start = .);
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.fini_array : AT (LOADADDR(.init_array) + SIZEOF(.init_array))
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{ *(.fini_array) } >frame-buffer
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PROVIDE (__fini_array_end = .);
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.ctors : AT (LOADADDR(.fini_array) + SIZEOF(.fini_array))
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{
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/* gcc uses crtbegin.o to find the start of
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the constructors, so we make sure it is
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first. Because this is a wildcard, it
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doesn't matter if the user does not
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actually link against crtbegin.o; the
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linker won't look for a file to match a
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wildcard. The wildcard also means that it
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doesn't matter which directory crtbegin.o
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is in. */
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KEEP (*crtbegin*.o(.ctors))
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/* We don't want to include the .ctor section from
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from the crtend.o file until after the sorted ctors.
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The .ctor section from the crtend file contains the
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end of ctors marker and it must be last */
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KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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} >frame-buffer
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.dtors : AT (LOADADDR(.ctors) + SIZEOF(.ctors))
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{
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KEEP (*crtbegin.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))
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} >frame-buffer
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.jcr : AT (LOADADDR(.dtors) + SIZEOF(.dtors))
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{ KEEP (*(.jcr)) } >frame-buffer
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.data.rel.ro : AT (LOADADDR(.jcr) + SIZEOF(.jcr))
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{ *(.data.rel.ro.local) *(.data.rel.ro*) } >frame-buffer
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.dynamic : AT (LOADADDR(.data.rel.ro) + SIZEOF(.data.rel.ro))
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{ *(.dynamic) } >frame-buffer
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/* DJK - Re-align the data section from the read-only section. */
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. = ALIGN(16) + (. & (16 - 1));
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PROVIDE (_data = .);
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.data : AT (LOADADDR(.dynamic) + SIZEOF(.dynamic))
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{
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*(.data .data.* .gnu.linkonce.d.*)
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KEEP (*(.gnu.linkonce.d.*personality*))
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SORT(CONSTRUCTORS)
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} >frame-buffer
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.data1 : AT (LOADADDR(.data) + SIZEOF(.data))
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{ *(.data1) } >frame-buffer
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.got : AT (LOADADDR(.data1) + SIZEOF(.data1))
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{ *(.got.plt) *(.got) }
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/* We want the small data sections together, so single-instruction offsets
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can access them all, and initialized data all before uninitialized, so
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we can shorten the on-disk segment size. */
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.sdata : AT (LOADADDR(.got) + SIZEOF(.got))
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{ *(.sdata .sdata.* .gnu.linkonce.s.*) } >frame-buffer
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_edata = .;
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PROVIDE ( edata = . ) ;
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_fbdata_start = LOADADDR(.sdata2) ;
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_fbdata_end = LOADADDR(.sdata) + SIZEOF(.sdata) - 4 ;
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PROVIDE (__FRAME_BUFFER_START = ADDR(.sdata2));
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PROVIDE (__FRAME_BUFFER_SIZE = 0x10000);
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PROVIDE (__FRAME_BUFFER_END = __FRAME_BUFFER_START + __FRAME_BUFFER_SIZE);
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.sbss : AT (LOADADDR(.sdata) + SIZEOF(.sdata))
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{
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PROVIDE (__sbss_start = .);
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PROVIDE (___sbss_start = .);
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*(.dynsbss)
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*(.sbss .sbss.* .gnu.linkonce.sb.*)
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*(.scommon)
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PROVIDE (__sbss_end = .);
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PROVIDE (___sbss_end = .);
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} >frame-buffer
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.bss : AT (LOADADDR(.sbss) + SIZEOF(.sbss))
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{
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*(.dynbss)
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*(.bss .bss.* .gnu.linkonce.b.*)
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*(COMMON)
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/* Align here to ensure that the .bss section occupies space up to
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_end. Align after .bss to ensure correct alignment even if the
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.bss section disappears because there are no input sections. */
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. = ALIGN(32 / 8);
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} >frame-buffer
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. = ALIGN(32 / 8);
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__bss_start = ADDR(.sbss) ;
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__bss_end = __bss_start + SIZEOF(.sbss) + SIZEOF(.bss) - 4 ;
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_end = .;
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PROVIDE (end = .);
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PROVIDE ( _extdata_start = ADDR(.bss) + SIZEOF(.bss));
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.extdata : AT ( LOADADDR(.bss) + SIZEOF(.bss))
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{
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*(.extdata)
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} >ram
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PROVIDE (_extdata_end = _extdata_start + SIZEOF(.extdata) - 4 );
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.extbss : AT ( LOADADDR(.extdata) + SIZEOF(.extdata))
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|
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{
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_extbss_start = .;
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*(.extbss);
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. = ALIGN(4);
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_extbss_end = .;
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} >ram
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. = ALIGN(4);
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PROVIDE (__EXTERNAL_MEMORY_START = 0xc00000);
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.dma :
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{
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_dma_start = .;
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*(.dma)
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_dma_end = .;
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} >dma-ram
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|
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/* Stabs debugging sections. */
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||
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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||
|
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.stab.exclstr 0 : { *(.stab.exclstr) }
|
||
|
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.stab.index 0 : { *(.stab.index) }
|
||
|
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.stab.indexstr 0 : { *(.stab.indexstr) }
|
||
|
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.comment 0 : { *(.comment) }
|
||
|
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/* DWARF debug sections.
|
||
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Symbols in the DWARF debugging sections are relative to the beginning
|
||
|
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of the section so we begin them at 0. */
|
||
|
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/* DWARF 1 */
|
||
|
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.debug 0 : { *(.debug) }
|
||
|
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.line 0 : { *(.line) }
|
||
|
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/* GNU DWARF 1 extensions */
|
||
|
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
||
|
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.debug_sfnames 0 : { *(.debug_sfnames) }
|
||
|
|
/* DWARF 1.1 and DWARF 2 */
|
||
|
|
.debug_aranges 0 : { *(.debug_aranges) }
|
||
|
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.debug_pubnames 0 : { *(.debug_pubnames) }
|
||
|
|
/* DWARF 2 */
|
||
|
|
.debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
|
||
|
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.debug_abbrev 0 : { *(.debug_abbrev) }
|
||
|
|
.debug_line 0 : { *(.debug_line) }
|
||
|
|
.debug_frame 0 : { *(.debug_frame) }
|
||
|
|
.debug_str 0 : { *(.debug_str) }
|
||
|
|
.debug_loc 0 : { *(.debug_loc) }
|
||
|
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.debug_macinfo 0 : { *(.debug_macinfo) }
|
||
|
|
/* SGI/MIPS DWARF 2 extensions */
|
||
|
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.debug_weaknames 0 : { *(.debug_weaknames) }
|
||
|
|
.debug_funcnames 0 : { *(.debug_funcnames) }
|
||
|
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.debug_typenames 0 : { *(.debug_typenames) }
|
||
|
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.debug_varnames 0 : { *(.debug_varnames) }
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||
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|
||
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PROVIDE (__stack = 0x80fff0);
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||
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||
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.stack (DEFINED(__stack) ? __stack : 0x7FFFF0) :
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||
|
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{
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||
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__stack = .;
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||
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*(.stack)
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||
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LONG(0xdeaddead)
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||
|
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}
|
||
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/DISCARD/ : { *(.note.GNU-stack) }
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||
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}
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