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Merge branch 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev

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* 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev:
  m32r: Cleanup linker script using new linker script macros.
  m32r: Move the spi_stack_top and spu_stack_top into .init.data section.
  m32r: Remove unused .altinstructions and .exit.* code from linker script.
  m32r: Move GET_THREAD_INFO definition out of asm/thread_info.h.
  m32r: Define THREAD_SIZE only once.
  m32r: make PAGE_SIZE available to assembly.
This commit is contained in:
Linus Torvalds 2009-09-24 17:25:09 -07:00
commit 851b147e44
6 changed files with 23 additions and 87 deletions
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4
arch/m32r/include/asm/page.h
View File

@ -1,9 +1,11 @@
#ifndef _ASM_M32R_PAGE_H
#define _ASM_M32R_PAGE_H
#include <linux/const.h>
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT 12
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#ifndef __ASSEMBLY__

2
arch/m32r/include/asm/processor.h
View File

@ -140,8 +140,6 @@ unsigned long get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) ((tsk)->thread.lr)
#define KSTK_ESP(tsk) ((tsk)->thread.sp)
#define THREAD_SIZE (2*PAGE_SIZE)
#define cpu_relax() barrier()
#endif /* _ASM_M32R_PROCESSOR_H */

15
arch/m32r/include/asm/thread_info.h
View File

@ -55,6 +55,8 @@ struct thread_info {
#define PREEMPT_ACTIVE 0x10000000
#define THREAD_SIZE (PAGE_SIZE << 1)
/*
* macros/functions for gaining access to the thread information structure
*/
@ -76,8 +78,6 @@ struct thread_info {
#define init_thread_info (init_thread_union.thread_info)
#define init_stack (init_thread_union.stack)
#define THREAD_SIZE (2*PAGE_SIZE)
/* how to get the thread information struct from C */
static inline struct thread_info *current_thread_info(void)
{
@ -125,17 +125,6 @@ static inline unsigned int get_thread_fault_code(void)
return ti->flags >> TI_FLAG_FAULT_CODE_SHIFT;
}
#else /* !__ASSEMBLY__ */
#define THREAD_SIZE 8192
/* how to get the thread information struct from ASM */
#define GET_THREAD_INFO(reg) GET_THREAD_INFO reg
.macro GET_THREAD_INFO reg
ldi \reg, #-THREAD_SIZE
and \reg, sp
.endm
#endif
/*

7
arch/m32r/kernel/entry.S
View File

@ -118,6 +118,13 @@
#define resume_kernel restore_all
#endif
/* how to get the thread information struct from ASM */
#define GET_THREAD_INFO(reg) GET_THREAD_INFO reg
.macro GET_THREAD_INFO reg
ldi \reg, #-THREAD_SIZE
and \reg, sp
.endm
ENTRY(ret_from_fork)
pop r0
bl schedule_tail

4
arch/m32r/kernel/head.S
View File

@ -268,13 +268,13 @@ ENTRY(empty_zero_page)
/*------------------------------------------------------------------------
* Stack area
*/
.section .spi
.section .init.data, "aw"
ALIGN
.global spi_stack_top
.zero 1024
spi_stack_top:
.section .spu
.section .init.data, "aw"
ALIGN
.global spu_stack_top
.zero 1024

78
arch/m32r/kernel/vmlinux.lds.S
View File

@ -4,6 +4,7 @@
#include <asm-generic/vmlinux.lds.h>
#include <asm/addrspace.h>
#include <asm/page.h>
#include <asm/thread_info.h>
OUTPUT_ARCH(m32r)
#if defined(__LITTLE_ENDIAN__)
@ -40,83 +41,22 @@ SECTIONS
#endif
_etext = .; /* End of text section */
. = ALIGN(16); /* Exception table */
__start___ex_table = .;
__ex_table : { *(__ex_table) }
__stop___ex_table = .;
EXCEPTION_TABLE(16)
RODATA
/* writeable */
.data : { /* Data */
*(.spu)
*(.spi)
DATA_DATA
CONSTRUCTORS
}
. = ALIGN(4096);
__nosave_begin = .;
.data_nosave : { *(.data.nosave) }
. = ALIGN(4096);
__nosave_end = .;
. = ALIGN(32);
.data.cacheline_aligned : { *(.data.cacheline_aligned) }
RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
_edata = .; /* End of data section */
. = ALIGN(8192); /* init_task */
.data.init_task : { *(.data.init_task) }
/* will be freed after init */
. = ALIGN(4096); /* Init code and data */
. = 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
. = ALIGN(4);
__alt_instructions = .;
.altinstructions : { *(.altinstructions) }
__alt_instructions_end = .;
.altinstr_replacement : { *(.altinstr_replacement) }
/* .exit.text is discard at runtime, not link time, to deal with references
from .altinstructions and .eh_frame */
.exit.text : { EXIT_TEXT }
.exit.data : { EXIT_DATA }
#ifdef CONFIG_BLK_DEV_INITRD
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
#endif
PERCPU(4096)
. = ALIGN(4096);
INIT_TEXT_SECTION(PAGE_SIZE)
INIT_DATA_SECTION(16)
PERCPU(PAGE_SIZE)
. = ALIGN(PAGE_SIZE);
__init_end = .;
/* freed after init ends here */
__bss_start = .; /* BSS */
.bss : { *(.bss) }
. = ALIGN(4);
__bss_stop = .;
BSS_SECTION(0, 0, 4)
_end = . ;