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r: 104840
b: refs/heads/master
c: c69cccc
h: refs/heads/master
v: v3
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Segher Boessenkool authored and Benjamin Herrenschmidt committed Jul 22, 2008
1 parent 6839cbe commit 9408e0b
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: f36c5227cd88b6340c40d62b05859e8213740a97
refs/heads/master: c69cccc95fe4b90dde5fe33e6a3b77880b534fa4
31 changes: 28 additions & 3 deletions trunk/arch/powerpc/kernel/vmlinux.lds.S
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Expand Up @@ -9,6 +9,25 @@

ENTRY(_stext)

PHDRS {
kernel PT_LOAD FLAGS(7); /* RWX */
notes PT_NOTE FLAGS(0);
dummy PT_NOTE FLAGS(0);

/* binutils < 2.18 has a bug that makes it misbehave when taking an
ELF file with all segments at load address 0 as input. This
happens when running "strip" on vmlinux, because of the AT() magic
in this linker script. People using GCC >= 4.2 won't run into
this problem, because the "build-id" support will put some data
into the "notes" segment (at a non-zero load address).
To work around this, we force some data into both the "dummy"
segment and the kernel segment, so the dummy segment will get a
non-zero load address. It's not enough to always create the
"notes" segment, since if nothing gets assigned to it, its load
address will be zero. */
}

#ifdef CONFIG_PPC64
OUTPUT_ARCH(powerpc:common64)
jiffies = jiffies_64;
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. = ALIGN(PAGE_SIZE);
_etext = .;
PROVIDE32 (etext = .);
}
} :kernel

/* Read-only data */
RODATA
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__stop___ex_table = .;
}

NOTES
NOTES :kernel :notes

/* The dummy segment contents for the bug workaround mentioned above
near PHDRS. */
.dummy : {
LONG(0xf177)
} :kernel :dummy

/*
* Init sections discarded at runtime
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_sinittext = .;
INIT_TEXT
_einittext = .;
}
} :kernel

/* .exit.text is discarded at runtime, not link time,
* to deal with references from __bug_table
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