X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-x86%2Felf.h;h=8f232dc5b5fe09dc81274a5eb830ee352c052169;hb=13a6ddb08e58a1bd344da7898c4e2f13bdf18c2f;hp=70edff2d56710919bca9139b113ce6dfc4460a6a;hpb=6c3652efcafa6a6d795093362cb4290c84994b5c;p=linux-2.6 diff --git a/include/asm-x86/elf.h b/include/asm-x86/elf.h index 70edff2d56..8f232dc5b5 100644 --- a/include/asm-x86/elf.h +++ b/include/asm-x86/elf.h @@ -11,7 +11,7 @@ typedef unsigned long elf_greg_t; -#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(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; @@ -72,20 +72,24 @@ typedef struct user_fxsr_struct elf_fpxregset_t; #endif -#ifdef __KERNEL__ - -#ifdef CONFIG_X86_32 -#include -#include /* for savesegment */ -#include #include +extern unsigned int vdso_enabled; + /* * This is used to ensure we don't load something for the wrong architecture. */ -#define elf_check_arch(x) \ +#define elf_check_arch_ia32(x) \ (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486)) +#include + +#ifdef CONFIG_X86_32 +#include /* for savesegment */ +#include + +#define elf_check_arch(x) elf_check_arch_ia32(x) + /* 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 @@ -96,93 +100,131 @@ typedef struct user_fxsr_struct elf_fpxregset_t; 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; \ +#define ELF_PLAT_INIT(_r, load_addr) \ + do { \ + _r->bx = 0; _r->cx = 0; _r->dx = 0; \ + _r->si = 0; _r->di = 0; _r->bp = 0; \ + _r->ax = 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; +/* + * 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) \ +do { \ + pr_reg[0] = regs->bx; \ + pr_reg[1] = regs->cx; \ + pr_reg[2] = regs->dx; \ + pr_reg[3] = regs->si; \ + pr_reg[4] = regs->di; \ + pr_reg[5] = regs->bp; \ + pr_reg[6] = regs->ax; \ + pr_reg[7] = regs->ds & 0xffff; \ + pr_reg[8] = regs->es & 0xffff; \ + pr_reg[9] = regs->fs & 0xffff; \ + savesegment(gs, pr_reg[10]); \ + pr_reg[11] = regs->orig_ax; \ + pr_reg[12] = regs->ip; \ + pr_reg[13] = regs->cs & 0xffff; \ + pr_reg[14] = regs->flags; \ + pr_reg[15] = regs->sp; \ + pr_reg[16] = regs->ss & 0xffff; \ +} while (0); #define ELF_PLATFORM (utsname()->machine) #define set_personality_64bit() do { } while (0) -extern unsigned int vdso_enabled; #else /* CONFIG_X86_32 */ -#include - /* * This is used to ensure we don't load something for the wrong architecture. */ -#define elf_check_arch(x) \ +#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); \ +#define compat_elf_check_arch(x) elf_check_arch_ia32(x) + +static inline void start_ia32_thread(struct pt_regs *regs, u32 ip, u32 sp) +{ + asm volatile("movl %0,%%fs" :: "r" (0)); + asm volatile("movl %0,%%es; movl %0,%%ds" : : "r" (__USER32_DS)); + load_gs_index(0); + regs->ip = ip; + regs->sp = sp; + regs->flags = X86_EFLAGS_IF; + regs->cs = __USER32_CS; + regs->ss = __USER32_DS; +} + +static inline void elf_common_init(struct thread_struct *t, + struct pt_regs *regs, const u16 ds) +{ + regs->ax = regs->bx = regs->cx = regs->dx = 0; + regs->si = regs->di = regs->bp = 0; + regs->r8 = regs->r9 = regs->r10 = regs->r11 = 0; + regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0; + t->fs = t->gs = 0; + t->fsindex = t->gsindex = 0; + t->ds = t->es = ds; +} + +#define ELF_PLAT_INIT(_r, load_addr) \ +do { \ + elf_common_init(¤t->thread, _r, 0); \ + clear_thread_flag(TIF_IA32); \ +} while (0) + +#define COMPAT_ELF_PLAT_INIT(regs, load_addr) \ + elf_common_init(¤t->thread, regs, __USER_DS) + +#define compat_start_thread(regs, ip, sp) \ +do { \ + start_ia32_thread(regs, ip, sp); \ + set_fs(USER_DS); \ } 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 COMPAT_SET_PERSONALITY(ex, ibcs2) \ +do { \ + if (test_thread_flag(TIF_IA32)) \ + clear_thread_flag(TIF_ABI_PENDING); \ + else \ + set_thread_flag(TIF_ABI_PENDING); \ + current->personality |= force_personality32; \ +} while (0) + +#define COMPAT_ELF_PLATFORM ("i686") + +/* + * 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 { \ +#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)[4] = (regs)->bp; \ + (pr_reg)[5] = (regs)->bx; \ (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)[10] = (regs)->ax; \ + (pr_reg)[11] = (regs)->cx; \ + (pr_reg)[12] = (regs)->dx; \ + (pr_reg)[13] = (regs)->si; \ + (pr_reg)[14] = (regs)->di; \ + (pr_reg)[15] = (regs)->orig_ax; \ + (pr_reg)[16] = (regs)->ip; \ (pr_reg)[17] = (regs)->cs; \ - (pr_reg)[18] = (regs)->eflags; \ - (pr_reg)[19] = (regs)->rsp; \ + (pr_reg)[18] = (regs)->flags; \ + (pr_reg)[19] = (regs)->sp; \ (pr_reg)[20] = (regs)->ss; \ (pr_reg)[21] = current->thread.fs; \ (pr_reg)[22] = current->thread.gs; \ @@ -190,15 +232,17 @@ extern unsigned int vdso_enabled; 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); +} 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; +extern unsigned int sysctl_vsyscall32; +extern int force_personality32; #endif /* !CONFIG_X86_32 */ +#define CORE_DUMP_USE_REGSET #define USE_ELF_CORE_DUMP #define ELF_EXEC_PAGESIZE 4096 @@ -233,54 +277,59 @@ extern int vdso_enabled; 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) +#define ARCH_DLINFO_IA32(vdso_enabled) \ +do { \ + if (vdso_enabled) { \ + NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \ + } \ +} while (0) #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_ENTRY \ - ((unsigned long) VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall)) +#define ARCH_DLINFO ARCH_DLINFO_IA32(vdso_enabled) /* 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 */ +#define VDSO_HIGH_BASE 0xffffe000U /* CONFIG_COMPAT_VDSO address */ + /* 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);\ +#define ARCH_DLINFO \ +do { \ + if (vdso_enabled) \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, \ + (unsigned long)current->mm->context.vdso); \ } while (0) +#define AT_SYSINFO 32 + +#define COMPAT_ARCH_DLINFO ARCH_DLINFO_IA32(sysctl_vsyscall32) + +#define COMPAT_ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000) + #endif /* !CONFIG_X86_32 */ +#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso) + +#define VDSO_ENTRY \ + ((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall)) + struct linux_binprm; #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 extern int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack); +extern int syscall32_setup_pages(struct linux_binprm *, int exstack); +#define compat_arch_setup_additional_pages syscall32_setup_pages + extern unsigned long arch_randomize_brk(struct mm_struct *mm); #define arch_randomize_brk arch_randomize_brk -#endif /* __KERNEL__ */ - #endif