182 lines
5.3 KiB
Scala
182 lines
5.3 KiB
Scala
# Copyright (C) 2014-2017 Free Software Foundation, Inc.
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#
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# Copying and distribution of this file, with or without modification,
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# are permitted in any medium without royalty provided the copyright
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# notice and this notice are preserved.
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# Many sections come in three flavours. There is the 'real' section,
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# like ".data". Then there are the per-procedure or per-variable
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# sections, generated by -ffunction-sections and -fdata-sections in GCC,
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# and useful for --gc-sections, which for a variable "foo" might be
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# ".data.foo". Then there are the linkonce sections, for which the linker
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# eliminates duplicates, which are named like ".gnu.linkonce.d.foo".
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# The exact correspondences are:
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#
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# Section Linkonce section
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# .text .gnu.linkonce.t.foo
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# .rodata .gnu.linkonce.r.foo
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# .data .gnu.linkonce.d.foo
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# .bss .gnu.linkonce.b.foo
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# .sdata .gnu.linkonce.s.foo
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# .sbss .gnu.linkonce.sb.foo
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# .sdata2 .gnu.linkonce.s2.foo
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# .sbss2 .gnu.linkonce.sb2.foo
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# .debug_info .gnu.linkonce.wi.foo
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# .tdata .gnu.linkonce.td.foo
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# .tbss .gnu.linkonce.tb.foo
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# .lrodata .gnu.linkonce.lr.foo
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# .ldata .gnu.linkonce.l.foo
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# .lbss .gnu.linkonce.lb.foo
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#
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# Each of these can also have corresponding .rel.* and .rela.* sections.
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test -z "$ENTRY" && ENTRY=__start
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cat <<EOF
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OUTPUT_FORMAT("${OUTPUT_FORMAT}")
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ENTRY(${ENTRY})
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/* Start and end of main stack. Assumes 256K of RAM. */
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${RELOCATING+ _estack = 0xe0040000 - 4;}
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${RELOCATING+ _sstack = 0xe0040000 - 64K;}
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/* End of heap. */
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${RELOCATING+ _eheap = _sstack - 4;}
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MEMORY
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{
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init : ORIGIN = 0x00000000, LENGTH = 0x0003fffc
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scr : ORIGIN = 0x0003fffc, LENGTH = 0x00000004
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rom : ORIGIN = 0x00044000, LENGTH = 0x1ffbc000
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ram : ORIGIN = 0xe0000000, LENGTH = 0x10000000
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saferam : ORIGIN = 0xf0000000, LENGTH = 0x10000000
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}
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SECTIONS
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{
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.init ${RELOCATING-0} : {
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KEEP (*(.init))
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KEEP (*(.fini))
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${RELOCATING+ _einit = .;}
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} ${RELOCATING+ > init}
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.text ${RELOCATING-0} : {
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${RELOCATING+ _ftext = .;}
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*(.text)
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${RELOCATING+*(.text.*)}
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${RELOCATING+*(.gnu.linkonce.t.*)}
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${RELOCATING+ _etext = .;}
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} ${RELOCATING+ > rom}
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.ctors ${RELOCATING-0} : {
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${CONSTRUCTING+ . = ALIGN(4);}
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${CONSTRUCTING+ __CTOR_LIST__ = .;}
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/* gcc uses crtbegin.o to find the start of
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the constructors, so we make sure it is
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first. Because this is a wildcard, it
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doesn't matter if the user does not
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actually link against crtbegin.o; the
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linker won't look for a file to match a
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wildcard. The wildcard also means that it
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doesn't matter which directory crtbegin.o
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is in. */
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KEEP (*crtbegin*.o(.ctors))
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/* We don't want to include the .ctor section from
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from the crtend.o file until after the sorted ctors.
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The .ctor section from the crtend file contains the
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end of ctors marker and it must be last. */
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KEEP (*(EXCLUDE_FILE (*crtend*.o) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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${CONSTRUCTING+ __CTOR_END__ = .;}
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} ${RELOCATING+ > rom}
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.dtors ${RELOCATING-0} : {
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${CONSTRUCTING+ __DTOR_LIST__ = .;}
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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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${CONSTRUCTING+ __DTOR_END__ = .;}
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} ${RELOCATING+ > rom}
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.rodata ${RELOCATING-0} : {
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${RELOCATING+ . = ALIGN(4);}
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${RELOCATING+ _srdata = .;}
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*(.rdata)
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*(.rodata)
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${RELOCATING+*(.rodata.*)}
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${RELOCATING+*(.gnu.linkonce.r.*)}
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${RELOCATING+ . = ALIGN(4);}
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${RELOCATING+ _erdata = .;}
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} ${RELOCATING+ > rom}
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.eh_frame ${RELOCATING-0} :
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{
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${RELOCATING+PROVIDE (__eh_frame_begin = .);}
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*(.eh_frame)
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${RELOCATING+ LONG (0);}
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${RELOCATING+PROVIDE (__eh_frame_end = .);}
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} ${RELOCATING+ > rom}
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.gcc_except_table ${RELOCATING-0} : { *(.gcc_except_table) } ${RELOCATING+ > rom}
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.jcr ${RELOCATING-0} : { *(.jcr) } ${RELOCATING+ > rom}
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.data ${RELOCATING-0} : {
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${RELOCATING+ . = ALIGN(4);}
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${RELOCATING+ _sdata = .;}
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*(.data)
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${RELOCATING+*(.data.*)}
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${RELOCATING+*(.gnu.linkonce.d.*)}
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${RELOCATING+ . = ALIGN(4);}
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${RELOCATING+ _edata = .;}
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} ${RELOCATING+ > ram}
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.bss ${RELOCATING-0} : {
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${RELOCATING+ . = ALIGN(4);}
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${RELOCATING+ __bss_start = .;}
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*(.bss)
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${RELOCATING+*(.bss.*)}
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${RELOCATING+*(.gnu.linkonce.b.*)}
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*(COMMON)
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${RELOCATING+ . = ALIGN(4);}
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${RELOCATING+ __bss_end = .;}
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${RELOCATING+ _sheap = .;}
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} ${RELOCATING+ > ram}
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saferam ${RELOCATING-0} : {
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*(saferam)
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${RELOCATING+ . = ALIGN(4);}
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${RELOCATING+ unitidentry = .;}
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} ${RELOCATING+ > saferam}
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/* Stabs debugging sections. */
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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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.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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EOF
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. $srcdir/scripttempl/DWARF.sc
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cat <<EOF
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}
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/* Provide a default address for the simulated file-I/O device. */
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PROVIDE (_sim_fileio_register = 0x2fff0000);
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/* Provide a default address for the simulated command line device. */
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PROVIDE (_sim_cmdline_header = 0x2ffe0000);
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/* Provide a default address for the simulated 1 MHz clock. */
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PROVIDE (_sim_clock = 0x20002100);
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EOF
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