linux/arch/mips/kernel/vmlinux.lds.S

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#include <asm/asm-offsets.h>
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
#undef mips
#define mips mips
OUTPUT_ARCH(mips)
ENTRY(kernel_entry)
PHDRS {
text PT_LOAD FLAGS(7); /* RWX */
note PT_NOTE FLAGS(4); /* R__ */
}
arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0 Albin Tonnerre <albin.tonnerre@free-electrons.com> reported: Bash 4 filters out variables which contain a dot in them. This happends to be the case of CPPFLAGS_vmlinux.lds. This is rather unfortunate, as it now causes build failures when using SHELL=/bin/bash to compile, or when bash happens to be used by make (eg when it's /bin/sh) Remove the common definition of CPPFLAGS_vmlinux.lds by pushing relevant stuff to either Makefile.build or the arch specific kernel/Makefile where we build the linker script. This is also nice cleanup as we move the information out where it is used. Notes for the different architectures touched: arm - we use an already exported symbol cris - we use a config symbol aleady available [Not build tested] mips - the jiffies complexity has moved to vmlinux.lds.S where we need it. Added a few variables to CPPFLAGS - they are only used by the linker script. [Not build tested] powerpc - removed assignment that is not needed [not build tested] sparc - simplified it using $(BITS) um - introduced a few new exported variables to deal with this xtensa - added options to CPP invocation [not build tested] Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-09-20 18:28:22 +08:00
ifdef CONFIG_32BIT
ifdef CONFIG_CPU_LITTLE_ENDIAN
jiffies = jiffies_64;
else
jiffies = jiffies_64 + 4;
endif
else
jiffies = jiffies_64;
endif
SECTIONS
{
#ifdef CONFIG_BOOT_ELF64
/* Read-only sections, merged into text segment: */
/* . = 0xc000000000000000; */
/* 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
*/
/* . = 0xa800000000300000; */
. = 0xffffffff80300000;
#endif
arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0 Albin Tonnerre <albin.tonnerre@free-electrons.com> reported: Bash 4 filters out variables which contain a dot in them. This happends to be the case of CPPFLAGS_vmlinux.lds. This is rather unfortunate, as it now causes build failures when using SHELL=/bin/bash to compile, or when bash happens to be used by make (eg when it's /bin/sh) Remove the common definition of CPPFLAGS_vmlinux.lds by pushing relevant stuff to either Makefile.build or the arch specific kernel/Makefile where we build the linker script. This is also nice cleanup as we move the information out where it is used. Notes for the different architectures touched: arm - we use an already exported symbol cris - we use a config symbol aleady available [Not build tested] mips - the jiffies complexity has moved to vmlinux.lds.S where we need it. Added a few variables to CPPFLAGS - they are only used by the linker script. [Not build tested] powerpc - removed assignment that is not needed [not build tested] sparc - simplified it using $(BITS) um - introduced a few new exported variables to deal with this xtensa - added options to CPP invocation [not build tested] Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-09-20 18:28:22 +08:00
. = VMLINUX_LOAD_ADDRESS;
/* read-only */
_text = .; /* Text and read-only data */
.text : {
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.text.*)
*(.fixup)
*(.gnu.warning)
} :text = 0
_etext = .; /* End of text section */
EXCEPTION_TABLE(16)
/* Exception table for data bus errors */
__dbe_table : {
__start___dbe_table = .;
*(__dbe_table)
__stop___dbe_table = .;
}
NOTES :text :note
.dummy : { *(.dummy) } :text
RODATA
/* writeable */
.data : { /* Data */
. = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
INIT_TASK_DATA(PAGE_SIZE)
NOSAVE_DATA
CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
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)
}
_edata = .; /* End of data section */
/* will be freed after init */
. = ALIGN(PAGE_SIZE); /* Init code and data */
__init_begin = .;
INIT_TEXT_SECTION(PAGE_SIZE)
INIT_DATA_SECTION(16)
/* .exit.text is discarded at runtime, not link time, to deal with
* references from .rodata
*/
.exit.text : {
EXIT_TEXT
}
.exit.data : {
EXIT_DATA
}
PERCPU(PAGE_SIZE)
. = ALIGN(PAGE_SIZE);
__init_end = .;
/* freed after init ends here */
BSS_SECTION(0, 0, 0)
_end = . ;
/* 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)
}
/* Sections to be discarded */
DISCARDS
/DISCARD/ : {
/* ABI crap starts here */
*(.MIPS.options)
*(.options)
*(.pdr)
*(.reginfo)
}
}