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[MIPS] Introduce a consistent style for vmlinux.lds.
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This style will be consitent with all other arch's - soon.

In addition:
- Moved a few labels inside brackets for the sections they specify
  to prevent that linker alignmnet made them point before the section start

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Sam Ravnborg authored and Ralf Baechle committed Oct 11, 2007
1 parent d5ab1a6 commit 0f5c906
Showing 1 changed file with 189 additions and 150 deletions.
339 changes: 189 additions & 150 deletions arch/mips/kernel/vmlinux.lds.S
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Original file line number Diff line number Diff line change
Expand Up @@ -6,163 +6,202 @@
OUTPUT_ARCH(mips)
ENTRY(kernel_entry)
jiffies = JIFFIES;

SECTIONS
{
#ifdef CONFIG_BOOT_ELF64
/* Read-only sections, merged into text segment: */
/* . = 0xc000000000000000; */
/* Read-only sections, merged into text segment: */
/* . = 0xc000000000000000; */

/* This is the value for an Origin kernel, taken from an IRIX kernel. */
/* . = 0xc00000000001c000; */
/* This is the value for an Origin kernel, taken from an IRIX kernel. */
/* . = 0xc00000000001c000; */

/* Set the vaddr for the text segment to a value
>= 0xa800 0000 0001 9000 if no symmon is going to configured
>= 0xa800 0000 0030 0000 otherwise */
/* Set the vaddr for the text segment to a value
* >= 0xa800 0000 0001 9000 if no symmon is going to configured
* >= 0xa800 0000 0030 0000 otherwise
*/

/* . = 0xa800000000300000; */
/* . = 0xa800000000300000; */
. = 0xffffffff80300000;
/* . = 0xa800000000300000; */
/* . = 0xa800000000300000; */
. = 0xffffffff80300000;
#endif
. = LOADADDR;
/* read-only */
_text = .; /* Text and read-only data */
.text : {
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
*(.fixup)
*(.gnu.warning)
} =0

_etext = .; /* End of text section */

. = ALIGN(16); /* Exception table */
__start___ex_table = .;
__ex_table : { *(__ex_table) }
__stop___ex_table = .;

__start___dbe_table = .; /* Exception table for data bus errors */
__dbe_table : { *(__dbe_table) }
__stop___dbe_table = .;

NOTES

RODATA

/* writeable */
.data : { /* Data */
. = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
/*
* This ALIGN is needed as a workaround for a bug a gcc bug upto 4.1 which
* limits the maximum alignment to at most 32kB and results in the following
* warning:
*
* CC arch/mips/kernel/init_task.o
* arch/mips/kernel/init_task.c:30: warning: alignment of ‘init_thread_union’
* is greater than maximum object file alignment. Using 32768
*/
. = ALIGN(_PAGE_SIZE);
*(.data.init_task)

DATA_DATA

CONSTRUCTORS
}
_gp = . + 0x8000;
.lit8 : { *(.lit8) }
.lit4 : { *(.lit4) }
/* We want the small data sections together, so single-instruction offsets
can access them all, and initialized data all before uninitialized, so
we can shorten the on-disk segment size. */
.sdata : { *(.sdata) }

. = ALIGN(_PAGE_SIZE);
__nosave_begin = .;
.data_nosave : { *(.data.nosave) }
. = ALIGN(_PAGE_SIZE);
__nosave_end = .;

. = ALIGN(32);
.data.cacheline_aligned : { *(.data.cacheline_aligned) }

_edata = .; /* End of data section */

/* will be freed after init */
. = ALIGN(_PAGE_SIZE); /* Init code and data */
__init_begin = .;
.init.text : {
_sinittext = .;
*(.init.text)
_einittext = .;
}
.init.data : { *(.init.data) }
. = ALIGN(16);
__setup_start = .;
.init.setup : { *(.init.setup) }
__setup_end = .;

__initcall_start = .;
.initcall.init : {
INITCALLS
}
__initcall_end = .;

__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
/* .exit.text is discarded at runtime, not link time, to deal with
references from .rodata */
.exit.text : { *(.exit.text) }
.exit.data : { *(.exit.data) }
. = LOADADDR;
/* read-only */
_text = .; /* Text and read-only data */
.text : {
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
*(.fixup)
*(.gnu.warning)
} =0
_etext = .; /* End of text section */

/* Exception table */
. = ALIGN(16);
__ex_table : {
__start___ex_table = .;
*(__ex_table)
__stop___ex_table = .;
}

/* Exception table for data bus errors */
__dbe_table : {
__start___dbe_table = .;
*(__dbe_table)
__stop___dbe_table = .;
}
RODATA

/* writeable */
.data : { /* Data */
. = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
/*
* This ALIGN is needed as a workaround for a bug a gcc bug upto 4.1 which
* limits the maximum alignment to at most 32kB and results in the following
* warning:
*
* CC arch/mips/kernel/init_task.o
* arch/mips/kernel/init_task.c:30: warning: alignment of ‘init_thread_union’
* is greater than maximum object file alignment. Using 32768
*/
. = ALIGN(_PAGE_SIZE);
*(.data.init_task)

DATA_DATA
CONSTRUCTORS
}
_gp = . + 0x8000;
.lit8 : {
*(.lit8)
}
.lit4 : {
*(.lit4)
}
/* We want the small data sections together, so single-instruction offsets
can access them all, and initialized data all before uninitialized, so
we can shorten the on-disk segment size. */
.sdata : {
*(.sdata)
}

. = ALIGN(_PAGE_SIZE);
.data_nosave : {
__nosave_begin = .;
*(.data.nosave)
}
. = ALIGN(_PAGE_SIZE);
__nosave_end = .;

. = ALIGN(32);
.data.cacheline_aligned : {
*(.data.cacheline_aligned)
}
_edata = .; /* End of data section */

/* will be freed after init */
. = ALIGN(_PAGE_SIZE); /* Init code and data */
__init_begin = .;
.init.text : {
_sinittext = .;
*(.init.text)
_einittext = .;
}
.init.data : {
*(.init.data)
}
. = ALIGN(16);
.init.setup : {
__setup_start = .;
*(.init.setup)
__setup_end = .;
}

.initcall.init : {
__initcall_start = .;
INITCALLS
__initcall_end = .;
}

.con_initcall.init : {
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
}
SECURITY_INIT

/* .exit.text is discarded at runtime, not link time, to deal with
* references from .rodata
*/
.exit.text : {
*(.exit.text)
}
.exit.data : {
*(.exit.data)
}
#if defined(CONFIG_BLK_DEV_INITRD)
. = ALIGN(_PAGE_SIZE);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
. = ALIGN(_PAGE_SIZE);
.init.ramfs : {
__initramfs_start = .;
*(.init.ramfs)
__initramfs_end = .;
}
#endif
PERCPU(_PAGE_SIZE)
. = ALIGN(_PAGE_SIZE);
__init_end = .;
/* freed after init ends here */

__bss_start = .; /* BSS */
.sbss : {
*(.sbss)
*(.scommon)
}
.bss : {
*(.bss)
*(COMMON)
}
__bss_stop = .;

_end = . ;

/* Sections to be discarded */
/DISCARD/ : {
*(.exitcall.exit)

/* ABI crap starts here */
*(.MIPS.options)
*(.options)
*(.pdr)
*(.reginfo)
}

/* These mark the ABI of the kernel for debuggers. */
.mdebug.abi32 : { KEEP(*(.mdebug.abi32)) }
.mdebug.abi64 : { KEEP(*(.mdebug.abi64)) }

/* This is the MIPS specific mdebug section. */
.mdebug : { *(.mdebug) }

STABS_DEBUG

DWARF_DEBUG

/* These must appear regardless of . */
.gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
.note : { *(.note) }
PERCPU(_PAGE_SIZE)
. = ALIGN(_PAGE_SIZE);
__init_end = .;
/* freed after init ends here */

__bss_start = .; /* BSS */
.sbss : {
*(.sbss)
*(.scommon)
}
.bss : {
*(.bss)
*(COMMON)
}
__bss_stop = .;

_end = . ;

/* Sections to be discarded */
/DISCARD/ : {
*(.exitcall.exit)

/* ABI crap starts here */
*(.MIPS.options)
*(.options)
*(.pdr)
*(.reginfo)
}

/* These mark the ABI of the kernel for debuggers. */
.mdebug.abi32 : {
KEEP(*(.mdebug.abi32))
}
.mdebug.abi64 : {
KEEP(*(.mdebug.abi64))
}

/* This is the MIPS specific mdebug section. */
.mdebug : {
*(.mdebug)
}

STABS_DEBUG
DWARF_DEBUG

/* These must appear regardless of . */
.gptab.sdata : {
*(.gptab.data)
*(.gptab.sdata)
}
.gptab.sbss : {
*(.gptab.bss)
*(.gptab.sbss)
}
.note : {
*(.note)
}
}

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