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_X86_64_ELF_H
- #define __ASM_X86_64_ELF_H
- /*
- * ELF register definitions..
- */
- #include <asm/ptrace.h>
- #include <asm/user.h>
- typedef unsigned long elf_greg_t;
- #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
- typedef elf_greg_t elf_gregset_t[ELF_NGREG];
- typedef struct user_i387_struct elf_fpregset_t;
- typedef struct user_fxsr_struct elf_fpxregset_t;
- /*
- * This is used to ensure we don't load something for the wrong architecture.
- */
- #define elf_check_arch(x)
- ((x)->e_machine == EM_X86_64)
- /*
- * These are used to set parameters in the core dumps.
- */
- #define ELF_CLASS ELFCLASS64
- #define ELF_DATA ELFDATA2LSB
- #define ELF_ARCH EM_X86_64
- /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
- contains 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.
- A value of 0 tells we have no such handler.
- We might as well make sure everything else is cleared too (except for %esp),
- just to make things more deterministic.
- */
- #define ELF_PLAT_INIT(_r) do {
- struct task_struct *cur = current;
- (_r)->rbx = 0; (_r)->rcx = 0; (_r)->rdx = 0;
- (_r)->rsi = 0; (_r)->rdi = 0; (_r)->rbp = 0;
- (_r)->rax = 0;
- (_r)->r8 = 0;
- (_r)->r9 = 0;
- (_r)->r10 = 0;
- (_r)->r11 = 0;
- (_r)->r12 = 0;
- (_r)->r13 = 0;
- (_r)->r14 = 0;
- (_r)->r15 = 0;
- cur->thread.fs = 0; cur->thread.gs = 0;
- cur->thread.fsindex = 0; cur->thread.gsindex = 0;
- cur->thread.ds = 0; cur->thread.es = 0;
- cur->thread.flags &= ~THREAD_IA32;
- } while (0)
- #define USE_ELF_CORE_DUMP
- #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)
- /* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
- now struct_user_regs, they are different). Assumes current is the process
- getting dumped. */
- #define ELF_CORE_COPY_REGS(pr_reg, regs) do {
- unsigned v;
- (pr_reg)[0] = (regs)->r15;
- (pr_reg)[1] = (regs)->r14;
- (pr_reg)[2] = (regs)->r13;
- (pr_reg)[3] = (regs)->r12;
- (pr_reg)[4] = (regs)->rbp;
- (pr_reg)[5] = (regs)->rbx;
- (pr_reg)[6] = (regs)->r11;
- (pr_reg)[7] = (regs)->r10;
- (pr_reg)[8] = (regs)->r9;
- (pr_reg)[9] = (regs)->r8;
- (pr_reg)[10] = (regs)->rax;
- (pr_reg)[11] = (regs)->rcx;
- (pr_reg)[12] = (regs)->rdx;
- (pr_reg)[13] = (regs)->rsi;
- (pr_reg)[14] = (regs)->rdi;
- (pr_reg)[15] = (regs)->orig_rax;
- (pr_reg)[16] = (regs)->rip;
- (pr_reg)[17] = (regs)->cs;
- (pr_reg)[18] = (regs)->eflags;
- (pr_reg)[19] = (regs)->rsp;
- (pr_reg)[20] = (regs)->ss;
- (pr_reg)[21] = current->thread.fs;
- (pr_reg)[22] = current->thread.gs;
- asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v;
- asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v;
- asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v;
- asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v;
- } while(0);
- /* 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 (boot_cpu_data.x86_capability[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,
- but that could change... */
- /* I'm not sure if we can use '-' here */
- #define ELF_PLATFORM ("x86_64")
- #ifdef __KERNEL__
- extern void set_personality_64bit(void);
- #define SET_PERSONALITY(ex, ibcs2) set_personality_64bit()
-
- #endif
- #endif