elf.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:4k
- #ifndef __ASM_ALPHA_ELF_H
- #define __ASM_ALPHA_ELF_H
- /*
- * ELF register definitions..
- */
- /*
- * The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long.
- * I have no idea why that is so. For now, we just leave it at 33
- * (32 general regs + processor status word).
- */
- #define ELF_NGREG 33
- #define ELF_NFPREG 32
- typedef unsigned long elf_greg_t;
- typedef elf_greg_t elf_gregset_t[ELF_NGREG];
- typedef double elf_fpreg_t;
- typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
- /*
- * This is used to ensure we don't load something for the wrong architecture.
- */
- #define elf_check_arch(x) ((x)->e_machine == EM_ALPHA)
- /*
- * These are used to set parameters in the core dumps.
- */
- #define ELF_CLASS ELFCLASS64
- #define ELF_DATA ELFDATA2LSB
- #define ELF_ARCH EM_ALPHA
- #define USE_ELF_CORE_DUMP
- #define ELF_EXEC_PAGESIZE 8192
- /* 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 (TASK_UNMAPPED_BASE + 0x1000000)
- /* $0 is set by ld.so to a pointer to a function which might be
- registered using atexit. This provides a mean for the dynamic
- linker to call DT_FINI functions for shared libraries that have
- been loaded before the code runs.
- So that we can use the same startup file with static executables,
- we start programs with a value of 0 to indicate that there is no
- such function. */
- #define ELF_PLAT_INIT(_r) _r->r0 = 0
- /* Use the same format as the OSF/1 procfs interface. The register
- layout is sane. However, since dump_thread() creates the funky
- layout that ECOFF coredumps want, we need to undo that layout here.
- Eventually, it would be nice if the ECOFF core-dump had to do the
- translation, then ELF_CORE_COPY_REGS() would become trivial and
- faster. */
- #define ELF_CORE_COPY_REGS(_dest,_regs)
- {
- struct user _dump;
-
- dump_thread(_regs, &_dump);
- _dest[ 0] = _dump.regs[EF_V0];
- _dest[ 1] = _dump.regs[EF_T0];
- _dest[ 2] = _dump.regs[EF_T1];
- _dest[ 3] = _dump.regs[EF_T2];
- _dest[ 4] = _dump.regs[EF_T3];
- _dest[ 5] = _dump.regs[EF_T4];
- _dest[ 6] = _dump.regs[EF_T5];
- _dest[ 7] = _dump.regs[EF_T6];
- _dest[ 8] = _dump.regs[EF_T7];
- _dest[ 9] = _dump.regs[EF_S0];
- _dest[10] = _dump.regs[EF_S1];
- _dest[11] = _dump.regs[EF_S2];
- _dest[12] = _dump.regs[EF_S3];
- _dest[13] = _dump.regs[EF_S4];
- _dest[14] = _dump.regs[EF_S5];
- _dest[15] = _dump.regs[EF_S6];
- _dest[16] = _dump.regs[EF_A0];
- _dest[17] = _dump.regs[EF_A1];
- _dest[18] = _dump.regs[EF_A2];
- _dest[19] = _dump.regs[EF_A3];
- _dest[20] = _dump.regs[EF_A4];
- _dest[21] = _dump.regs[EF_A5];
- _dest[22] = _dump.regs[EF_T8];
- _dest[23] = _dump.regs[EF_T9];
- _dest[24] = _dump.regs[EF_T10];
- _dest[25] = _dump.regs[EF_T11];
- _dest[26] = _dump.regs[EF_RA];
- _dest[27] = _dump.regs[EF_T12];
- _dest[28] = _dump.regs[EF_AT];
- _dest[29] = _dump.regs[EF_GP];
- _dest[30] = _dump.regs[EF_SP];
- _dest[31] = _dump.regs[EF_PC]; /* store PC here */
- _dest[32] = _dump.regs[EF_PS];
- }
- /* This yields a mask that user programs can use to figure out what
- instruction set this CPU supports. This is trivial on Alpha,
- but not so on other machines. */
- #define ELF_HWCAP
- ({
- /* Sadly, most folks don't yet have assemblers that know about
- amask. This is "amask v0, v0" */
- register long _v0 __asm("$0") = -1;
- __asm(".long 0x47e00c20" : "=r"(_v0) : "0"(_v0));
- ~_v0;
- })
- /* 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.
- This might do with checking bwx simultaneously... */
- #define ELF_PLATFORM
- ({
- /* Or "implver v0" ... */
- register long _v0 __asm("$0");
- __asm(".long 0x47e03d80" : "=r"(_v0));
- _v0 == 0 ? "ev4" : "ev5";
- })
- #ifdef __KERNEL__
- #define SET_PERSONALITY(EX, IBCS2)
- set_personality(((EX).e_flags & EF_ALPHA_32BIT)
- ? PER_LINUX_32BIT : (IBCS2) ? PER_SVR4 : PER_LINUX)
- #endif
- #endif