arch/microblaze/include/uapi/asm/elf.h

Source file repositories/reference/linux-study-clean/arch/microblaze/include/uapi/asm/elf.h

File Facts

System
Linux kernel
Corpus path
arch/microblaze/include/uapi/asm/elf.h
Extension
.h
Size
3331 bytes
Lines
124
Domain
Architecture Layer
Bucket
arch/microblaze
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _UAPI_ASM_MICROBLAZE_ELF_H
#define _UAPI_ASM_MICROBLAZE_ELF_H

#include <linux/elf-em.h>

/*
 * Note there is no "official" ELF designation for Microblaze.
 * I've snaffled the value from the microblaze binutils source code
 * /binutils/microblaze/include/elf/microblaze.h
 */
#define EM_MICROBLAZE_OLD	0xbaab
#define ELF_ARCH		EM_MICROBLAZE

/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch(x)	((x)->e_machine == EM_MICROBLAZE \
				 || (x)->e_machine == EM_MICROBLAZE_OLD)

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS32

#ifndef __uClinux__

/*
 * ELF register definitions..
 */

#include <asm/ptrace.h>
#include <asm/byteorder.h>

#ifndef ELF_GREG_T
#define ELF_GREG_T
typedef unsigned long elf_greg_t;
#endif

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

#ifndef ELF_GREGSET_T
#define ELF_GREGSET_T
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
#endif

#ifndef ELF_FPREGSET_T
#define ELF_FPREGSET_T

/* TBD */
#define ELF_NFPREG	33	/* includes fsr */
typedef unsigned long elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];

/* typedef struct user_fpu_struct elf_fpregset_t; */
#endif

/* 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         (0x08000000)

#ifdef __MICROBLAZEEL__
#define ELF_DATA	ELFDATA2LSB
#else
#define ELF_DATA	ELFDATA2MSB
#endif

#define ELF_EXEC_PAGESIZE	PAGE_SIZE


#define ELF_CORE_COPY_REGS(_dest, _regs)			\
	memcpy((char *) &_dest, (char *) _regs,		\
	sizeof(struct pt_regs));

/* This yields a mask that user programs can use to figure out what
 * instruction set this CPU supports.  This could be done in user space,
 * but it's not easy, and we've already done it here.
 */
#define ELF_HWCAP	(0)

/* 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.

 * For the moment, we have only optimizations for the Intel generations,

Annotation

Implementation Notes