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Commit 87c1a3fb authored by GuanXuetao's avatar GuanXuetao
Browse files

unicore32 core architecture: generic elf and ksyms stuff 



This patch includes some generic stuff including elf and ksyms.
Because all one-line asm-generic headers are auto-generated by ASM_GENERIC_HEADERS
in arch/unicore32/Makefile, so the rest seems very little.
ELF handling functions and module handling functions are also here.

Signed-off-by: default avatarGuan Xuetao <gxt@mprc.pku.edu.cn>
Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 790edb61

arch/unicore32/include/asm/elf.h

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Original line number Diff line number Diff line 
/*

 * linux/arch/unicore32/include/asm/elf.h

 *

 * Code specific to PKUnity SoC and UniCore ISA

 *

 * Copyright (C) 2001-2010 GUAN Xue-tao

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#ifndef __UNICORE_ELF_H__

#define __UNICORE_ELF_H__



#include <asm/hwcap.h>



/*

 * ELF register definitions..

 */

#include <asm/ptrace.h>



typedef unsigned long elf_greg_t;

typedef unsigned long elf_freg_t[3];



#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))

typedef elf_greg_t elf_gregset_t[ELF_NGREG];



typedef struct fp_state elf_fpregset_t;



#define EM_UNICORE		110



#define R_UNICORE_NONE		0

#define R_UNICORE_PC24		1

#define R_UNICORE_ABS32		2

#define R_UNICORE_CALL		28

#define R_UNICORE_JUMP24	29



/*

 * These are used to set parameters in the core dumps.

 */

#define ELF_CLASS	ELFCLASS32

#define ELF_DATA	ELFDATA2LSB

#define ELF_ARCH	EM_UNICORE



/*

 * This yields a string that ld.so will use to load implementation

 * specific libraries for optimization.  This is more specific in

 * intent than poking at uname or /proc/cpuinfo.

 *

 */

#define ELF_PLATFORM_SIZE 8

#define ELF_PLATFORM	(elf_platform)



extern char elf_platform[];



struct elf32_hdr;



/*

 * This is used to ensure we don't load something for the wrong architecture.

 */

extern int elf_check_arch(const struct elf32_hdr *);

#define elf_check_arch elf_check_arch



struct task_struct;

int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);

#define ELF_CORE_COPY_TASK_REGS dump_task_regs



#define ELF_EXEC_PAGESIZE	4096



/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical

   use of this is to invoke "./ld.so someprog" to test out a new version of

   the loader.  We need to make sure that it is out of the way of the program

   that it will "exec", and that there is sufficient room for the brk.  */



#define ELF_ET_DYN_BASE	(2 * TASK_SIZE / 3)



/* When the program starts, a1 contains a pointer to a function to be

   registered with atexit, as per the SVR4 ABI.  A value of 0 means we

   have no such handler.  */

#define ELF_PLAT_INIT(_r, load_addr)	{(_r)->UCreg_00 = 0; }



extern void elf_set_personality(const struct elf32_hdr *);

#define SET_PERSONALITY(ex)	elf_set_personality(&(ex))



struct mm_struct;

extern unsigned long arch_randomize_brk(struct mm_struct *mm);

#define arch_randomize_brk arch_randomize_brk



extern int vectors_user_mapping(void);

#define arch_setup_additional_pages(bprm, uses_interp) vectors_user_mapping()

#define ARCH_HAS_SETUP_ADDITIONAL_PAGES



#endif

arch/unicore32/include/asm/string.h

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Original line number Diff line number Diff line 
/*

 * linux/arch/unicore32/include/asm/string.h

 *

 * Code specific to PKUnity SoC and UniCore ISA

 *

 * Copyright (C) 2001-2010 GUAN Xue-tao

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#ifndef __UNICORE_STRING_H__

#define __UNICORE_STRING_H__



/*

 * We don't do inline string functions, since the

 * optimised inline asm versions are not small.

 */



#define __HAVE_ARCH_STRRCHR

extern char *strrchr(const char *s, int c);



#define __HAVE_ARCH_STRCHR

extern char *strchr(const char *s, int c);



#define __HAVE_ARCH_MEMCPY

extern void *memcpy(void *, const void *, __kernel_size_t);



#define __HAVE_ARCH_MEMMOVE

extern void *memmove(void *, const void *, __kernel_size_t);



#define __HAVE_ARCH_MEMCHR

extern void *memchr(const void *, int, __kernel_size_t);



#define __HAVE_ARCH_MEMSET

extern void *memset(void *, int, __kernel_size_t);



#endif

arch/unicore32/kernel/asm-offsets.c

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Original line number Diff line number Diff line 
/*

 * linux/arch/unicore32/kernel/asm-offsets.c

 *

 * Code specific to PKUnity SoC and UniCore ISA

 *

 * Copyright (C) 2001-2010 GUAN Xue-tao

 *

 * Generate definitions needed by assembly language modules.

 * This code generates raw asm output which is post-processed to extract

 * and format the required data.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#include <linux/sched.h>

#include <linux/mm.h>

#include <linux/dma-mapping.h>

#include <linux/kbuild.h>

#include <linux/suspend.h>

#include <linux/thread_info.h>

#include <asm/memory.h>

#include <asm/suspend.h>



/*

 * GCC 3.0, 3.1: general bad code generation.

 * GCC 3.2.0: incorrect function argument offset calculation.

 * GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c

 *	(http://gcc.gnu.org/PR8896) and incorrect structure

 *		initialisation in fs/jffs2/erase.c

 */

#if (__GNUC__ < 4)

#error Your compiler should upgrade to uc4

#error	Known good compilers: 4.2.2

#endif



int main(void)

{

	DEFINE(TSK_ACTIVE_MM,	offsetof(struct task_struct, active_mm));

	BLANK();

	DEFINE(TI_FLAGS,	offsetof(struct thread_info, flags));

	DEFINE(TI_PREEMPT,	offsetof(struct thread_info, preempt_count));

	DEFINE(TI_ADDR_LIMIT,	offsetof(struct thread_info, addr_limit));

	DEFINE(TI_TASK,		offsetof(struct thread_info, task));

	DEFINE(TI_EXEC_DOMAIN,	offsetof(struct thread_info, exec_domain));

	DEFINE(TI_CPU,		offsetof(struct thread_info, cpu));

	DEFINE(TI_CPU_SAVE,	offsetof(struct thread_info, cpu_context));

	DEFINE(TI_USED_CP,	offsetof(struct thread_info, used_cp));

#ifdef CONFIG_UNICORE_FPU_F64

	DEFINE(TI_FPSTATE,	offsetof(struct thread_info, fpstate));

#endif

	BLANK();

	DEFINE(S_R0,		offsetof(struct pt_regs, UCreg_00));

	DEFINE(S_R1,		offsetof(struct pt_regs, UCreg_01));

	DEFINE(S_R2,		offsetof(struct pt_regs, UCreg_02));

	DEFINE(S_R3,		offsetof(struct pt_regs, UCreg_03));

	DEFINE(S_R4,		offsetof(struct pt_regs, UCreg_04));

	DEFINE(S_R5,		offsetof(struct pt_regs, UCreg_05));

	DEFINE(S_R6,		offsetof(struct pt_regs, UCreg_06));

	DEFINE(S_R7,		offsetof(struct pt_regs, UCreg_07));

	DEFINE(S_R8,		offsetof(struct pt_regs, UCreg_08));

	DEFINE(S_R9,		offsetof(struct pt_regs, UCreg_09));

	DEFINE(S_R10,		offsetof(struct pt_regs, UCreg_10));

	DEFINE(S_R11,		offsetof(struct pt_regs, UCreg_11));

	DEFINE(S_R12,		offsetof(struct pt_regs, UCreg_12));

	DEFINE(S_R13,		offsetof(struct pt_regs, UCreg_13));

	DEFINE(S_R14,		offsetof(struct pt_regs, UCreg_14));

	DEFINE(S_R15,		offsetof(struct pt_regs, UCreg_15));

	DEFINE(S_R16,		offsetof(struct pt_regs, UCreg_16));

	DEFINE(S_R17,		offsetof(struct pt_regs, UCreg_17));

	DEFINE(S_R18,		offsetof(struct pt_regs, UCreg_18));

	DEFINE(S_R19,		offsetof(struct pt_regs, UCreg_19));

	DEFINE(S_R20,		offsetof(struct pt_regs, UCreg_20));

	DEFINE(S_R21,		offsetof(struct pt_regs, UCreg_21));

	DEFINE(S_R22,		offsetof(struct pt_regs, UCreg_22));

	DEFINE(S_R23,		offsetof(struct pt_regs, UCreg_23));

	DEFINE(S_R24,		offsetof(struct pt_regs, UCreg_24));

	DEFINE(S_R25,		offsetof(struct pt_regs, UCreg_25));

	DEFINE(S_R26,		offsetof(struct pt_regs, UCreg_26));

	DEFINE(S_FP,		offsetof(struct pt_regs, UCreg_fp));

	DEFINE(S_IP,		offsetof(struct pt_regs, UCreg_ip));

	DEFINE(S_SP,		offsetof(struct pt_regs, UCreg_sp));

	DEFINE(S_LR,		offsetof(struct pt_regs, UCreg_lr));

	DEFINE(S_PC,		offsetof(struct pt_regs, UCreg_pc));

	DEFINE(S_PSR,		offsetof(struct pt_regs, UCreg_asr));

	DEFINE(S_OLD_R0,	offsetof(struct pt_regs, UCreg_ORIG_00));

	DEFINE(S_FRAME_SIZE,	sizeof(struct pt_regs));

	BLANK();

	DEFINE(VMA_VM_MM,	offsetof(struct vm_area_struct, vm_mm));

	DEFINE(VMA_VM_FLAGS,	offsetof(struct vm_area_struct, vm_flags));

	BLANK();

	DEFINE(VM_EXEC,		VM_EXEC);

	BLANK();

	DEFINE(PAGE_SZ,		PAGE_SIZE);

	BLANK();

	DEFINE(SYS_ERROR0,	0x9f0000);

	BLANK();

	DEFINE(PBE_ADDRESS,		offsetof(struct pbe, address));

	DEFINE(PBE_ORIN_ADDRESS,	offsetof(struct pbe, orig_address));

	DEFINE(PBE_NEXT,		offsetof(struct pbe, next));

	DEFINE(SWSUSP_CPU,		offsetof(struct swsusp_arch_regs, \

							cpu_context));

#ifdef	CONFIG_UNICORE_FPU_F64

	DEFINE(SWSUSP_FPSTATE,		offsetof(struct swsusp_arch_regs, \

							fpstate));

#endif

	BLANK();

	DEFINE(DMA_BIDIRECTIONAL,	DMA_BIDIRECTIONAL);

	DEFINE(DMA_TO_DEVICE,		DMA_TO_DEVICE);

	DEFINE(DMA_FROM_DEVICE,		DMA_FROM_DEVICE);

	return 0;

}

arch/unicore32/kernel/elf.c

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Original line number Diff line number Diff line 
/*

 * linux/arch/unicore32/kernel/elf.c

 *

 * Code specific to PKUnity SoC and UniCore ISA

 *

 * Copyright (C) 2001-2010 GUAN Xue-tao

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#include <linux/module.h>

#include <linux/sched.h>

#include <linux/personality.h>

#include <linux/binfmts.h>

#include <linux/elf.h>



int elf_check_arch(const struct elf32_hdr *x)

{

	/* Make sure it's an UniCore executable */

	if (x->e_machine != EM_UNICORE)

		return 0;



	/* Make sure the entry address is reasonable */

	if (x->e_entry & 3)

		return 0;



	return 1;

}

EXPORT_SYMBOL(elf_check_arch);



void elf_set_personality(const struct elf32_hdr *x)

{

	unsigned int personality = PER_LINUX;



	set_personality(personality);

}

EXPORT_SYMBOL(elf_set_personality);

arch/unicore32/kernel/ksyms.c

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Original line number Diff line number Diff line 
/*

 * linux/arch/unicore32/kernel/ksyms.c

 *

 * Code specific to PKUnity SoC and UniCore ISA

 *

 * Copyright (C) 2001-2010 GUAN Xue-tao

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#include <linux/module.h>

#include <linux/sched.h>

#include <linux/string.h>

#include <linux/cryptohash.h>

#include <linux/delay.h>

#include <linux/in6.h>

#include <linux/syscalls.h>

#include <linux/uaccess.h>

#include <linux/io.h>



#include <asm/checksum.h>

#include <asm/system.h>



#include "ksyms.h"



EXPORT_SYMBOL(__uc32_find_next_zero_bit);

EXPORT_SYMBOL(__uc32_find_next_bit);



EXPORT_SYMBOL(__backtrace);



	/* platform dependent support */

EXPORT_SYMBOL(__udelay);

EXPORT_SYMBOL(__const_udelay);



	/* networking */

EXPORT_SYMBOL(csum_partial);

EXPORT_SYMBOL(csum_partial_copy_from_user);

EXPORT_SYMBOL(csum_partial_copy_nocheck);

EXPORT_SYMBOL(__csum_ipv6_magic);



	/* io */

#ifndef __raw_readsb

EXPORT_SYMBOL(__raw_readsb);

#endif

#ifndef __raw_readsw

EXPORT_SYMBOL(__raw_readsw);

#endif

#ifndef __raw_readsl

EXPORT_SYMBOL(__raw_readsl);

#endif

#ifndef __raw_writesb

EXPORT_SYMBOL(__raw_writesb);

#endif

#ifndef __raw_writesw

EXPORT_SYMBOL(__raw_writesw);

#endif

#ifndef __raw_writesl

EXPORT_SYMBOL(__raw_writesl);

#endif



	/* string / mem functions */

EXPORT_SYMBOL(strchr);

EXPORT_SYMBOL(strrchr);

EXPORT_SYMBOL(memset);

EXPORT_SYMBOL(memcpy);

EXPORT_SYMBOL(memmove);

EXPORT_SYMBOL(memchr);



	/* user mem (segment) */

EXPORT_SYMBOL(__strnlen_user);

EXPORT_SYMBOL(__strncpy_from_user);



EXPORT_SYMBOL(copy_page);



EXPORT_SYMBOL(__copy_from_user);

EXPORT_SYMBOL(__copy_to_user);

EXPORT_SYMBOL(__clear_user);



EXPORT_SYMBOL(__get_user_1);

EXPORT_SYMBOL(__get_user_2);

EXPORT_SYMBOL(__get_user_4);



EXPORT_SYMBOL(__put_user_1);

EXPORT_SYMBOL(__put_user_2);

EXPORT_SYMBOL(__put_user_4);

EXPORT_SYMBOL(__put_user_8);



EXPORT_SYMBOL(__ashldi3);

EXPORT_SYMBOL(__ashrdi3);

EXPORT_SYMBOL(__divsi3);

EXPORT_SYMBOL(__lshrdi3);

EXPORT_SYMBOL(__modsi3);

EXPORT_SYMBOL(__muldi3);

EXPORT_SYMBOL(__ucmpdi2);

EXPORT_SYMBOL(__udivsi3);

EXPORT_SYMBOL(__umodsi3);

EXPORT_SYMBOL(__bswapsi2);