libc/libgloss/rx/rx-sim.ld

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/*
Copyright (c) 2005,2008,2009 Red Hat Incorporated.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
The name of Red Hat Incorporated may not be used to endorse
or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* Default linker script, for normal executables */
OUTPUT_ARCH(rx)
ENTRY(_start)
/* Do we need any of these for elf?
__DYNAMIC = 0; */
/* This memory layout is larger than the largest predicted RX600 chip,
but gives us more memory for benchmarks. */
MEMORY {
RAM (w) : ORIGIN = 0x01000000, LENGTH = 0x07000000 /* 112 Mb "external" address space. */
STACK (w) : ORIGIN = 0x08000000, LENGTH = 16 /* Top of RAM. */
}
SECTIONS
{
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PROVIDE (_etext = .);
PROVIDE (etext = .);
. = ALIGN(4);
KEEP (*(.init))
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PROVIDE(__romdatastart = .);
} > RAM
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KEEP (*(.init_array))
PROVIDE (__init_array_end = .);
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KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
PROVIDE (__fini_array_end = .);
LONG(0); /* Sentinel. */
/* gcc uses crtbegin.o to find the start of the constructors, so
we make sure it is first. Because this is a wildcard, it
doesn't matter if the user does not actually link against
crtbegin.o; the linker won't look for a file to match a
wildcard. The wildcard also means that it doesn't matter which
directory crtbegin.o is in. */
KEEP (*crtbegin*.o(.ctors))
/* We don't want to include the .ctor section from from the
crtend.o file until after the sorted ctors. The .ctor section
from the crtend file contains the end of ctors marker and it
must be last */
KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
KEEP (*crtbegin*.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
KEEP (*(.jcr))
*(.data.rel.ro.local) *(.data.rel.ro*)
*(.dynamic)
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KEEP (*(.gnu.linkonce.d.*personality*))
SORT(CONSTRUCTORS)
*(.data1)
*(.got.plt) *(.got)
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can access them all, and initialized data all before uninitialized, so
we can shorten the on-disk segment size. */
. = ALIGN(4);
*(.sdata .sdata.* .gnu.linkonce.s.* D_2 D_1)
. = ALIGN(4);
_edata = .;
PROVIDE (edata = .);
PROVIDE (__dataend = .);
} > RAM
/* Note that crt0 assumes this is a multiple of four; all the
start/stop symbols are also assumed long-aligned. */
/* PROVIDE (__romdatacopysize = __dataend - __datastart); */
/* We're loading into simulator ram, no need to copy */
PROVIDE (__romdatacopysize = 0);
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*(.sbss .sbss.*)
*(.bss B B_2 B_1 .bss.* .gnu.linkonce.b.*)
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*(COMMON)
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PROVIDE (__bssend = .);
_end = .;
PROVIDE (end = .);
} > RAM
PROVIDE (__bsssize = SIZEOF(.bss) / 4);
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PROVIDEd the user can override it on the command line. It has to be
set here, rather than inside the .stack section, as symbols defined
inside sections are only evaluated during the final phase of the link,
long after the ASSERT is checked. An ASSERT referencing a PROVIDED but
not yet evaluated symbol will automatically fail.
FIXME: It would be nice if this value could be automatically set via
gcc's -fstack-usage command line option somehow. */
PROVIDE (__stack_size = 0x100);
.stack (ORIGIN (STACK)) :
{
PROVIDE (__stack = .);
*(.stack)
/* Linker section checking ignores empty sections like
this one so we have to have our own test here. */
ASSERT ((__stack > (_end + __stack_size)),
"Error: Too much data - no room left for the stack");
} > STACK
/* Providing one of these symbols in your code is sufficient to have
it linked in to the fixed vector table. */
PROVIDE (__rx_priviledged_exception_handler = 0x00000000);
PROVIDE (__rx_access_exception_handler = 0x00000000);
PROVIDE (__rx_undefined_exception_handler = 0x00000000);
PROVIDE (__rx_floating_exception_handler = 0x00000000);
PROVIDE (__rx_nonmaskable_exception_handler = 0x00000000);
.vectors (0xFFFFFFD0) :
{
PROVIDE (__vectors = .);
LONG (__rx_priviledged_exception_handler);
LONG (__rx_access_exception_handler);
LONG (0);
LONG (__rx_undefined_exception_handler);
LONG (0);
LONG (__rx_floating_exception_handler);
LONG (0);
LONG (0);
LONG (0);
LONG (0);
LONG (__rx_nonmaskable_exception_handler);
LONG (_start);
}
/* The rest are all not normally part of the runtime image. */
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Symbols in the DWARF debugging sections are relative to the beginning
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}