elf.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:3k
- /*
- * BK Id: SCCS/s.elf.h 1.14 08/21/01 16:07:48 trini
- */
- #ifndef __PPC_ELF_H
- #define __PPC_ELF_H
- /*
- * ELF register definitions..
- */
- #include <asm/types.h>
- #include <asm/ptrace.h>
- #include <asm/cputable.h>
- #define ELF_NGREG 48 /* includes nip, msr, lr, etc. */
- #define ELF_NFPREG 33 /* includes fpscr */
- #define ELF_NVRREG 33 /* includes vscr */
- /*
- * These are used to set parameters in the core dumps.
- */
- #define ELF_ARCH EM_PPC
- #define ELF_CLASS ELFCLASS32
- #define ELF_DATA ELFDATA2MSB
- /* General registers */
- typedef unsigned long elf_greg_t;
- typedef elf_greg_t elf_gregset_t[ELF_NGREG];
- /* Floating point registers */
- typedef double elf_fpreg_t;
- typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
- /* Altivec registers */
- typedef __vector128 elf_vrreg_t;
- typedef elf_vrreg_t elf_vrregset_t[ELF_NVRREG];
- #ifdef __KERNEL__
- /*
- * This is used to ensure we don't load something for the wrong architecture.
- */
- #define elf_check_arch(x) ((x)->e_machine == EM_PPC)
- /* 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)
- #define USE_ELF_CORE_DUMP
- #define ELF_EXEC_PAGESIZE 4096
- #define ELF_CORE_COPY_REGS(gregs, regs)
- memcpy(gregs, regs,
- sizeof(struct pt_regs) < sizeof(elf_gregset_t)?
- sizeof(struct pt_regs): sizeof(elf_gregset_t));
- /* This yields a mask that user programs can use to figure out what
- instruction set this cpu supports. This could be done in userspace,
- but it's not easy, and we've already done it here. */
- #define ELF_HWCAP (cur_cpu_spec[0]->cpu_user_features)
- /* 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,
- but that could change... */
- #define ELF_PLATFORM (NULL)
- #define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
- /*
- * We need to put in some extra aux table entries to tell glibc what
- * the cache block size is, so it can use the dcbz instruction safely.
- */
- #define AT_DCACHEBSIZE 19
- #define AT_ICACHEBSIZE 20
- #define AT_UCACHEBSIZE 21
- /* A special ignored type value for PPC, for glibc compatibility. */
- #define AT_IGNOREPPC 22
- extern int dcache_bsize;
- extern int icache_bsize;
- extern int ucache_bsize;
- /*
- * The requirements here are:
- * - keep the final alignment of sp (sp & 0xf)
- * - make sure the 32-bit value at the first 16 byte aligned position of
- * AUXV is greater than 16 for glibc compatibility.
- * AT_IGNOREPPC is used for that.
- * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
- * even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
- */
- #define DLINFO_ARCH_ITEMS 3
- #define ARCH_DLINFO
- do {
- sp -= DLINFO_ARCH_ITEMS * 2;
- NEW_AUX_ENT(0, AT_DCACHEBSIZE, dcache_bsize);
- NEW_AUX_ENT(1, AT_ICACHEBSIZE, icache_bsize);
- NEW_AUX_ENT(2, AT_UCACHEBSIZE, ucache_bsize);
- /*
- * Now handle glibc compatibility.
- */
- sp -= 2*2;
- NEW_AUX_ENT(0, AT_IGNOREPPC, AT_IGNOREPPC);
- NEW_AUX_ENT(1, AT_IGNOREPPC, AT_IGNOREPPC);
- } while (0)
- #endif /* __KERNEL__ */
- #endif