mirror of https://gitee.com/openkylin/linux.git
161 lines
5.5 KiB
C
161 lines
5.5 KiB
C
#ifndef __ASM_X86_64_ELF_H
|
|
#define __ASM_X86_64_ELF_H
|
|
|
|
/*
|
|
* ELF register definitions..
|
|
*/
|
|
|
|
#include <asm/ptrace.h>
|
|
#include <asm/user.h>
|
|
#include <asm/processor.h>
|
|
|
|
/* x86-64 relocation types */
|
|
#define R_X86_64_NONE 0 /* No reloc */
|
|
#define R_X86_64_64 1 /* Direct 64 bit */
|
|
#define R_X86_64_PC32 2 /* PC relative 32 bit signed */
|
|
#define R_X86_64_GOT32 3 /* 32 bit GOT entry */
|
|
#define R_X86_64_PLT32 4 /* 32 bit PLT address */
|
|
#define R_X86_64_COPY 5 /* Copy symbol at runtime */
|
|
#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */
|
|
#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */
|
|
#define R_X86_64_RELATIVE 8 /* Adjust by program base */
|
|
#define R_X86_64_GOTPCREL 9 /* 32 bit signed pc relative
|
|
offset to GOT */
|
|
#define R_X86_64_32 10 /* Direct 32 bit zero extended */
|
|
#define R_X86_64_32S 11 /* Direct 32 bit sign extended */
|
|
#define R_X86_64_16 12 /* Direct 16 bit zero extended */
|
|
#define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */
|
|
#define R_X86_64_8 14 /* Direct 8 bit sign extended */
|
|
#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */
|
|
|
|
#define R_X86_64_NUM 16
|
|
|
|
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;
|
|
|
|
/*
|
|
* 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, load_addr) 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; \
|
|
clear_thread_flag(TIF_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()
|
|
/*
|
|
* An executable for which elf_read_implies_exec() returns TRUE will
|
|
* have the READ_IMPLIES_EXEC personality flag set automatically.
|
|
*/
|
|
#define elf_read_implies_exec(ex, executable_stack) (executable_stack != EXSTACK_DISABLE_X)
|
|
|
|
extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
|
|
extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
|
|
|
|
#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
|
|
#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
|
|
|
|
#endif
|
|
|
|
#endif
|