51b563fc93
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>
154 lines
2.8 KiB
ArmAsm
154 lines
2.8 KiB
ArmAsm
#include <asm/asm-offsets.h>
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#include <asm/page.h>
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#include <asm-generic/vmlinux.lds.h>
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#undef mips
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#define mips mips
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OUTPUT_ARCH(mips)
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ENTRY(kernel_entry)
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PHDRS {
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text PT_LOAD FLAGS(7); /* RWX */
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note PT_NOTE FLAGS(4); /* R__ */
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}
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ifdef CONFIG_32BIT
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ifdef CONFIG_CPU_LITTLE_ENDIAN
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jiffies = jiffies_64;
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else
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jiffies = jiffies_64 + 4;
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endif
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else
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jiffies = jiffies_64;
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endif
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SECTIONS
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{
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#ifdef CONFIG_BOOT_ELF64
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/* Read-only sections, merged into text segment: */
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/* . = 0xc000000000000000; */
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/* This is the value for an Origin kernel, taken from an IRIX kernel. */
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/* . = 0xc00000000001c000; */
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/* Set the vaddr for the text segment to a value
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* >= 0xa800 0000 0001 9000 if no symmon is going to configured
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* >= 0xa800 0000 0030 0000 otherwise
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*/
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/* . = 0xa800000000300000; */
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. = 0xffffffff80300000;
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#endif
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. = VMLINUX_LOAD_ADDRESS;
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/* read-only */
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_text = .; /* Text and read-only data */
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.text : {
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TEXT_TEXT
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SCHED_TEXT
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LOCK_TEXT
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KPROBES_TEXT
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*(.text.*)
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*(.fixup)
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*(.gnu.warning)
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} :text = 0
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_etext = .; /* End of text section */
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EXCEPTION_TABLE(16)
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/* Exception table for data bus errors */
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__dbe_table : {
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__start___dbe_table = .;
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*(__dbe_table)
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__stop___dbe_table = .;
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}
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NOTES :text :note
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.dummy : { *(.dummy) } :text
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RODATA
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/* writeable */
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.data : { /* Data */
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. = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
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INIT_TASK_DATA(PAGE_SIZE)
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NOSAVE_DATA
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CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
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DATA_DATA
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CONSTRUCTORS
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}
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_gp = . + 0x8000;
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.lit8 : {
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*(.lit8)
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}
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.lit4 : {
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*(.lit4)
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}
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/* We want the small data sections together, so single-instruction offsets
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can access them all, and initialized data all before uninitialized, so
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we can shorten the on-disk segment size. */
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.sdata : {
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*(.sdata)
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}
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_edata = .; /* End of data section */
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/* will be freed after init */
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. = ALIGN(PAGE_SIZE); /* Init code and data */
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__init_begin = .;
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INIT_TEXT_SECTION(PAGE_SIZE)
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INIT_DATA_SECTION(16)
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/* .exit.text is discarded at runtime, not link time, to deal with
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* references from .rodata
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*/
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.exit.text : {
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EXIT_TEXT
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}
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.exit.data : {
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EXIT_DATA
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}
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PERCPU(PAGE_SIZE)
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. = ALIGN(PAGE_SIZE);
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__init_end = .;
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/* freed after init ends here */
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BSS_SECTION(0, 0, 0)
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_end = . ;
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/* These mark the ABI of the kernel for debuggers. */
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.mdebug.abi32 : {
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KEEP(*(.mdebug.abi32))
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}
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.mdebug.abi64 : {
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KEEP(*(.mdebug.abi64))
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}
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/* This is the MIPS specific mdebug section. */
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.mdebug : {
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*(.mdebug)
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}
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STABS_DEBUG
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DWARF_DEBUG
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/* These must appear regardless of . */
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.gptab.sdata : {
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*(.gptab.data)
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*(.gptab.sdata)
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}
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.gptab.sbss : {
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*(.gptab.bss)
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*(.gptab.sbss)
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}
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/* Sections to be discarded */
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DISCARDS
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/DISCARD/ : {
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/* ABI crap starts here */
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*(.MIPS.options)
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*(.options)
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*(.pdr)
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*(.reginfo)
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}
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}
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