| #ifndef _ASM_X86_ELF_H |
| #define _ASM_X86_ELF_H |
| |
| /* |
| * ELF register definitions.. |
| */ |
| |
| #include <asm/ptrace.h> |
| #include <asm/user.h> |
| #include <asm/auxvec.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; |
| |
| #ifdef __i386__ |
| |
| typedef struct user_fxsr_struct elf_fpxregset_t; |
| |
| #define R_386_NONE 0 |
| #define R_386_32 1 |
| #define R_386_PC32 2 |
| #define R_386_GOT32 3 |
| #define R_386_PLT32 4 |
| #define R_386_COPY 5 |
| #define R_386_GLOB_DAT 6 |
| #define R_386_JMP_SLOT 7 |
| #define R_386_RELATIVE 8 |
| #define R_386_GOTOFF 9 |
| #define R_386_GOTPC 10 |
| #define R_386_NUM 11 |
| |
| /* |
| * These are used to set parameters in the core dumps. |
| */ |
| #define ELF_CLASS ELFCLASS32 |
| #define ELF_DATA ELFDATA2LSB |
| #define ELF_ARCH EM_386 |
| |
| #else |
| |
| /* 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 |
| |
| /* |
| * These are used to set parameters in the core dumps. |
| */ |
| #define ELF_CLASS ELFCLASS64 |
| #define ELF_DATA ELFDATA2LSB |
| #define ELF_ARCH EM_X86_64 |
| |
| #endif |
| |
| #ifdef __KERNEL__ |
| |
| #ifdef CONFIG_X86_32 |
| #include <asm/processor.h> |
| #include <asm/system.h> /* for savesegment */ |
| #include <asm/desc.h> |
| |
| /* |
| * This is used to ensure we don't load something for the wrong architecture. |
| */ |
| #define elf_check_arch(x) \ |
| (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486)) |
| |
| /* 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 { \ |
| _r->ebx = 0; _r->ecx = 0; _r->edx = 0; \ |
| _r->esi = 0; _r->edi = 0; _r->ebp = 0; \ |
| _r->eax = 0; \ |
| } while (0) |
| |
| /* regs is struct pt_regs, pr_reg is elf_gregset_t (which is |
| now struct_user_regs, they are different) */ |
| |
| #define ELF_CORE_COPY_REGS(pr_reg, regs) \ |
| pr_reg[0] = regs->ebx; \ |
| pr_reg[1] = regs->ecx; \ |
| pr_reg[2] = regs->edx; \ |
| pr_reg[3] = regs->esi; \ |
| pr_reg[4] = regs->edi; \ |
| pr_reg[5] = regs->ebp; \ |
| pr_reg[6] = regs->eax; \ |
| pr_reg[7] = regs->xds & 0xffff; \ |
| pr_reg[8] = regs->xes & 0xffff; \ |
| pr_reg[9] = regs->xfs & 0xffff; \ |
| savesegment(gs,pr_reg[10]); \ |
| pr_reg[11] = regs->orig_eax; \ |
| pr_reg[12] = regs->eip; \ |
| pr_reg[13] = regs->xcs & 0xffff; \ |
| pr_reg[14] = regs->eflags; \ |
| pr_reg[15] = regs->esp; \ |
| pr_reg[16] = regs->xss & 0xffff; |
| |
| #define ELF_PLATFORM (utsname()->machine) |
| #define set_personality_64bit() do { } while (0) |
| extern unsigned int vdso_enabled; |
| |
| #else /* CONFIG_X86_32 */ |
| |
| #include <asm/processor.h> |
| |
| /* |
| * 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) |
| |
| #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) |
| |
| /* 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); |
| |
| /* I'm not sure if we can use '-' here */ |
| #define ELF_PLATFORM ("x86_64") |
| extern void set_personality_64bit(void); |
| extern int vdso_enabled; |
| |
| #endif /* !CONFIG_X86_32 */ |
| |
| #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 (TASK_SIZE / 3 * 2) |
| |
| /* 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... */ |
| |
| #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) |
| |
| struct task_struct; |
| |
| 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) |
| |
| #ifdef CONFIG_X86_32 |
| extern int dump_task_extended_fpu (struct task_struct *, |
| struct user_fxsr_struct *); |
| #define ELF_CORE_COPY_XFPREGS(tsk, elf_xfpregs) \ |
| dump_task_extended_fpu(tsk, elf_xfpregs) |
| #define ELF_CORE_XFPREG_TYPE NT_PRXFPREG |
| |
| #define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO)) |
| #define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso) |
| #define VDSO_PRELINK 0 |
| |
| #define VDSO_SYM(x) \ |
| (VDSO_CURRENT_BASE + (unsigned long)(x) - VDSO_PRELINK) |
| |
| #define VDSO_HIGH_EHDR ((const struct elfhdr *) VDSO_HIGH_BASE) |
| #define VDSO_EHDR ((const struct elfhdr *) VDSO_CURRENT_BASE) |
| |
| extern void __kernel_vsyscall; |
| |
| #define VDSO_ENTRY VDSO_SYM(&__kernel_vsyscall) |
| |
| /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ |
| |
| #define ARCH_DLINFO \ |
| do if (vdso_enabled) { \ |
| NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \ |
| NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \ |
| } while (0) |
| |
| #else /* CONFIG_X86_32 */ |
| |
| /* 1GB for 64bit, 8MB for 32bit */ |
| #define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff) |
| |
| #define ARCH_DLINFO \ |
| do if (vdso_enabled) { \ |
| NEW_AUX_ENT(AT_SYSINFO_EHDR,(unsigned long)current->mm->context.vdso);\ |
| } while (0) |
| |
| #endif /* !CONFIG_X86_32 */ |
| |
| struct linux_binprm; |
| |
| #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 |
| extern int arch_setup_additional_pages(struct linux_binprm *bprm, |
| int executable_stack); |
| |
| extern unsigned long arch_randomize_brk(struct mm_struct *mm); |
| #define arch_randomize_brk arch_randomize_brk |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif |