diff options
Diffstat (limited to 'arch/um/sys-x86_64')
26 files changed, 0 insertions, 1530 deletions
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile deleted file mode 100644 index 097184660e8a..000000000000 --- a/arch/um/sys-x86_64/Makefile +++ /dev/null @@ -1,27 +0,0 @@ -# -# Copyright 2003 PathScale, Inc. -# -# Licensed under the GPL -# - -obj-y = bug.o bugs.o delay.o fault.o ldt.o ptrace.o ptrace_user.o mem.o \ - setjmp.o signal.o stub.o stub_segv.o syscalls.o syscall_table.o \ - sysrq.o ksyms.o tls.o - -obj-y += vdso/ - -subarch-obj-y = lib/csum-partial_64.o lib/memcpy_64.o lib/thunk_64.o \ - lib/rwsem.o -subarch-obj-$(CONFIG_MODULES) += kernel/module.o - -ldt-y = ../sys-i386/ldt.o - -USER_OBJS := ptrace_user.o - -extra-y += user-offsets.s -$(obj)/user-offsets.s: c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) - -UNPROFILE_OBJS := stub_segv.o -CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING) - -include arch/um/scripts/Makefile.rules diff --git a/arch/um/sys-x86_64/bug.c b/arch/um/sys-x86_64/bug.c deleted file mode 100644 index e8034e363d83..000000000000 --- a/arch/um/sys-x86_64/bug.c +++ /dev/null @@ -1,21 +0,0 @@ -/* - * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com) - * Licensed under the GPL V2 - */ - -#include <linux/uaccess.h> - -/* - * Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because - * that's not relevant in skas mode. - */ - -int is_valid_bugaddr(unsigned long eip) -{ - unsigned short ud2; - - if (probe_kernel_address((unsigned short __user *)eip, ud2)) - return 0; - - return ud2 == 0x0b0f; -} diff --git a/arch/um/sys-x86_64/bugs.c b/arch/um/sys-x86_64/bugs.c deleted file mode 100644 index 44e02ba2a265..000000000000 --- a/arch/um/sys-x86_64/bugs.c +++ /dev/null @@ -1,15 +0,0 @@ -/* - * Copyright 2003 PathScale, Inc. - * - * Licensed under the GPL - */ - -#include "sysdep/ptrace.h" - -void arch_check_bugs(void) -{ -} - -void arch_examine_signal(int sig, struct uml_pt_regs *regs) -{ -} diff --git a/arch/um/sys-x86_64/delay.c b/arch/um/sys-x86_64/delay.c deleted file mode 100644 index f3fe1a688f7e..000000000000 --- a/arch/um/sys-x86_64/delay.c +++ /dev/null @@ -1,60 +0,0 @@ -/* - * Copyright (C) 2011 Richard Weinberger <richrd@nod.at> - * Mostly copied from arch/x86/lib/delay.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <asm/param.h> - -void __delay(unsigned long loops) -{ - asm volatile( - "test %0,%0\n" - "jz 3f\n" - "jmp 1f\n" - - ".align 16\n" - "1: jmp 2f\n" - - ".align 16\n" - "2: dec %0\n" - " jnz 2b\n" - "3: dec %0\n" - - : /* we don't need output */ - : "a" (loops) - ); -} -EXPORT_SYMBOL(__delay); - -inline void __const_udelay(unsigned long xloops) -{ - int d0; - - xloops *= 4; - asm("mull %%edx" - : "=d" (xloops), "=&a" (d0) - : "1" (xloops), "0" - (loops_per_jiffy * (HZ/4))); - - __delay(++xloops); -} -EXPORT_SYMBOL(__const_udelay); - -void __udelay(unsigned long usecs) -{ - __const_udelay(usecs * 0x000010c7); /* 2**32 / 1000000 (rounded up) */ -} -EXPORT_SYMBOL(__udelay); - -void __ndelay(unsigned long nsecs) -{ - __const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */ -} -EXPORT_SYMBOL(__ndelay); diff --git a/arch/um/sys-x86_64/fault.c b/arch/um/sys-x86_64/fault.c deleted file mode 100644 index ce85117fc64e..000000000000 --- a/arch/um/sys-x86_64/fault.c +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Copyright 2003 PathScale, Inc. - * - * Licensed under the GPL - */ - -#include "sysdep/ptrace.h" - -/* These two are from asm-um/uaccess.h and linux/module.h, check them. */ -struct exception_table_entry -{ - unsigned long insn; - unsigned long fixup; -}; - -const struct exception_table_entry *search_exception_tables(unsigned long add); - -int arch_fixup(unsigned long address, struct uml_pt_regs *regs) -{ - const struct exception_table_entry *fixup; - - fixup = search_exception_tables(address); - if (fixup != 0) { - UPT_IP(regs) = fixup->fixup; - return 1; - } - return 0; -} diff --git a/arch/um/sys-x86_64/ksyms.c b/arch/um/sys-x86_64/ksyms.c deleted file mode 100644 index 1db2fce00948..000000000000 --- a/arch/um/sys-x86_64/ksyms.c +++ /dev/null @@ -1,11 +0,0 @@ -#include <linux/module.h> -#include <asm/string.h> -#include <asm/checksum.h> - -/*XXX: we need them because they would be exported by x86_64 */ -#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4 -EXPORT_SYMBOL(memcpy); -#else -EXPORT_SYMBOL(__memcpy); -#endif -EXPORT_SYMBOL(csum_partial); diff --git a/arch/um/sys-x86_64/mem.c b/arch/um/sys-x86_64/mem.c deleted file mode 100644 index 546518727a73..000000000000 --- a/arch/um/sys-x86_64/mem.c +++ /dev/null @@ -1,26 +0,0 @@ -#include "linux/mm.h" -#include "asm/page.h" -#include "asm/mman.h" - -const char *arch_vma_name(struct vm_area_struct *vma) -{ - if (vma->vm_mm && vma->vm_start == um_vdso_addr) - return "[vdso]"; - - return NULL; -} - -struct vm_area_struct *get_gate_vma(struct mm_struct *mm) -{ - return NULL; -} - -int in_gate_area(struct mm_struct *mm, unsigned long addr) -{ - return 0; -} - -int in_gate_area_no_mm(unsigned long addr) -{ - return 0; -} diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c deleted file mode 100644 index 44e68e0c0d10..000000000000 --- a/arch/um/sys-x86_64/ptrace.c +++ /dev/null @@ -1,271 +0,0 @@ -/* - * Copyright 2003 PathScale, Inc. - * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * - * Licensed under the GPL - */ - -#include <linux/mm.h> -#include <linux/sched.h> -#include <linux/errno.h> -#define __FRAME_OFFSETS -#include <asm/ptrace.h> -#include <asm/uaccess.h> - -/* - * determines which flags the user has access to. - * 1 = access 0 = no access - */ -#define FLAG_MASK 0x44dd5UL - -static const int reg_offsets[] = -{ - [R8 >> 3] = HOST_R8, - [R9 >> 3] = HOST_R9, - [R10 >> 3] = HOST_R10, - [R11 >> 3] = HOST_R11, - [R12 >> 3] = HOST_R12, - [R13 >> 3] = HOST_R13, - [R14 >> 3] = HOST_R14, - [R15 >> 3] = HOST_R15, - [RIP >> 3] = HOST_IP, - [RSP >> 3] = HOST_SP, - [RAX >> 3] = HOST_RAX, - [RBX >> 3] = HOST_RBX, - [RCX >> 3] = HOST_RCX, - [RDX >> 3] = HOST_RDX, - [RSI >> 3] = HOST_RSI, - [RDI >> 3] = HOST_RDI, - [RBP >> 3] = HOST_RBP, - [CS >> 3] = HOST_CS, - [SS >> 3] = HOST_SS, - [FS_BASE >> 3] = HOST_FS_BASE, - [GS_BASE >> 3] = HOST_GS_BASE, - [DS >> 3] = HOST_DS, - [ES >> 3] = HOST_ES, - [FS >> 3] = HOST_FS, - [GS >> 3] = HOST_GS, - [EFLAGS >> 3] = HOST_EFLAGS, - [ORIG_RAX >> 3] = HOST_ORIG_RAX, -}; - -int putreg(struct task_struct *child, int regno, unsigned long value) -{ -#ifdef TIF_IA32 - /* - * Some code in the 64bit emulation may not be 64bit clean. - * Don't take any chances. - */ - if (test_tsk_thread_flag(child, TIF_IA32)) - value &= 0xffffffff; -#endif - switch (regno) { - case R8: - case R9: - case R10: - case R11: - case R12: - case R13: - case R14: - case R15: - case RIP: - case RSP: - case RAX: - case RBX: - case RCX: - case RDX: - case RSI: - case RDI: - case RBP: - case ORIG_RAX: - break; - - case FS: - case GS: - case DS: - case ES: - case SS: - case CS: - if (value && (value & 3) != 3) - return -EIO; - value &= 0xffff; - break; - - case FS_BASE: - case GS_BASE: - if (!((value >> 48) == 0 || (value >> 48) == 0xffff)) - return -EIO; - break; - - case EFLAGS: - value &= FLAG_MASK; - child->thread.regs.regs.gp[HOST_EFLAGS] |= value; - return 0; - - default: - panic("Bad register in putreg(): %d\n", regno); - } - - child->thread.regs.regs.gp[reg_offsets[regno >> 3]] = value; - return 0; -} - -int poke_user(struct task_struct *child, long addr, long data) -{ - if ((addr & 3) || addr < 0) - return -EIO; - - if (addr < MAX_REG_OFFSET) - return putreg(child, addr, data); - else if ((addr >= offsetof(struct user, u_debugreg[0])) && - (addr <= offsetof(struct user, u_debugreg[7]))) { - addr -= offsetof(struct user, u_debugreg[0]); - addr = addr >> 2; - if ((addr == 4) || (addr == 5)) - return -EIO; - child->thread.arch.debugregs[addr] = data; - return 0; - } - return -EIO; -} - -unsigned long getreg(struct task_struct *child, int regno) -{ - unsigned long mask = ~0UL; -#ifdef TIF_IA32 - if (test_tsk_thread_flag(child, TIF_IA32)) - mask = 0xffffffff; -#endif - switch (regno) { - case R8: - case R9: - case R10: - case R11: - case R12: - case R13: - case R14: - case R15: - case RIP: - case RSP: - case RAX: - case RBX: - case RCX: - case RDX: - case RSI: - case RDI: - case RBP: - case ORIG_RAX: - case EFLAGS: - case FS_BASE: - case GS_BASE: - break; - case FS: - case GS: - case DS: - case ES: - case SS: - case CS: - mask = 0xffff; - break; - default: - panic("Bad register in getreg: %d\n", regno); - } - return mask & child->thread.regs.regs.gp[reg_offsets[regno >> 3]]; -} - -int peek_user(struct task_struct *child, long addr, long data) -{ - /* read the word at location addr in the USER area. */ - unsigned long tmp; - - if ((addr & 3) || addr < 0) - return -EIO; - - tmp = 0; /* Default return condition */ - if (addr < MAX_REG_OFFSET) - tmp = getreg(child, addr); - else if ((addr >= offsetof(struct user, u_debugreg[0])) && - (addr <= offsetof(struct user, u_debugreg[7]))) { - addr -= offsetof(struct user, u_debugreg[0]); - addr = addr >> 2; - tmp = child->thread.arch.debugregs[addr]; - } - return put_user(tmp, (unsigned long *) data); -} - -/* XXX Mostly copied from sys-i386 */ -int is_syscall(unsigned long addr) -{ - unsigned short instr; - int n; - - n = copy_from_user(&instr, (void __user *) addr, sizeof(instr)); - if (n) { - /* - * access_process_vm() grants access to vsyscall and stub, - * while copy_from_user doesn't. Maybe access_process_vm is - * slow, but that doesn't matter, since it will be called only - * in case of singlestepping, if copy_from_user failed. - */ - n = access_process_vm(current, addr, &instr, sizeof(instr), 0); - if (n != sizeof(instr)) { - printk("is_syscall : failed to read instruction from " - "0x%lx\n", addr); - return 1; - } - } - /* sysenter */ - return instr == 0x050f; -} - -static int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child) -{ - int err, n, cpu = ((struct thread_info *) child->stack)->cpu; - long fpregs[HOST_FP_SIZE]; - - BUG_ON(sizeof(*buf) != sizeof(fpregs)); - err = save_fp_registers(userspace_pid[cpu], fpregs); - if (err) - return err; - - n = copy_to_user(buf, fpregs, sizeof(fpregs)); - if (n > 0) - return -EFAULT; - - return n; -} - -static int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child) -{ - int n, cpu = ((struct thread_info *) child->stack)->cpu; - long fpregs[HOST_FP_SIZE]; - - BUG_ON(sizeof(*buf) != sizeof(fpregs)); - n = copy_from_user(fpregs, buf, sizeof(fpregs)); - if (n > 0) - return -EFAULT; - - return restore_fp_registers(userspace_pid[cpu], fpregs); -} - -long subarch_ptrace(struct task_struct *child, long request, - unsigned long addr, unsigned long data) -{ - int ret = -EIO; - void __user *datap = (void __user *) data; - - switch (request) { - case PTRACE_GETFPREGS: /* Get the child FPU state. */ - ret = get_fpregs(datap, child); - break; - case PTRACE_SETFPREGS: /* Set the child FPU state. */ - ret = set_fpregs(datap, child); - break; - case PTRACE_ARCH_PRCTL: - /* XXX Calls ptrace on the host - needs some SMP thinking */ - ret = arch_prctl(child, data, (void __user *) addr); - break; - } - - return ret; -} diff --git a/arch/um/sys-x86_64/ptrace_user.c b/arch/um/sys-x86_64/ptrace_user.c deleted file mode 100644 index c57a496d3f5b..000000000000 --- a/arch/um/sys-x86_64/ptrace_user.c +++ /dev/null @@ -1,22 +0,0 @@ -/* - * Copyright 2003 PathScale, Inc. - * - * Licensed under the GPL - */ - -#include <errno.h> -#include "ptrace_user.h" - -int ptrace_getregs(long pid, unsigned long *regs_out) -{ - if (ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0) - return -errno; - return(0); -} - -int ptrace_setregs(long pid, unsigned long *regs_out) -{ - if (ptrace(PTRACE_SETREGS, pid, 0, regs_out) < 0) - return -errno; - return(0); -} diff --git a/arch/um/sys-x86_64/setjmp.S b/arch/um/sys-x86_64/setjmp.S deleted file mode 100644 index 45f547b4043e..000000000000 --- a/arch/um/sys-x86_64/setjmp.S +++ /dev/null @@ -1,54 +0,0 @@ -# -# arch/x86_64/setjmp.S -# -# setjmp/longjmp for the x86-64 architecture -# - -# -# The jmp_buf is assumed to contain the following, in order: -# %rbx -# %rsp (post-return) -# %rbp -# %r12 -# %r13 -# %r14 -# %r15 -# <return address> -# - - .text - .align 4 - .globl setjmp - .type setjmp, @function -setjmp: - pop %rsi # Return address, and adjust the stack - xorl %eax,%eax # Return value - movq %rbx,(%rdi) - movq %rsp,8(%rdi) # Post-return %rsp! - push %rsi # Make the call/return stack happy - movq %rbp,16(%rdi) - movq %r12,24(%rdi) - movq %r13,32(%rdi) - movq %r14,40(%rdi) - movq %r15,48(%rdi) - movq %rsi,56(%rdi) # Return address - ret - - .size setjmp,.-setjmp - - .text - .align 4 - .globl longjmp - .type longjmp, @function -longjmp: - movl %esi,%eax # Return value (int) - movq (%rdi),%rbx - movq 8(%rdi),%rsp - movq 16(%rdi),%rbp - movq 24(%rdi),%r12 - movq 32(%rdi),%r13 - movq 40(%rdi),%r14 - movq 48(%rdi),%r15 - jmp *56(%rdi) - - .size longjmp,.-longjmp diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c deleted file mode 100644 index 255b2ca0ce67..000000000000 --- a/arch/um/sys-x86_64/signal.c +++ /dev/null @@ -1,255 +0,0 @@ -/* - * Copyright (C) 2003 PathScale, Inc. - * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#include <linux/personality.h> -#include <linux/ptrace.h> -#include <linux/kernel.h> -#include <asm/unistd.h> -#include <asm/uaccess.h> -#include <asm/ucontext.h> -#include "frame_kern.h" -#include "skas.h" - -static int copy_sc_from_user(struct pt_regs *regs, - struct sigcontext __user *from) -{ - struct sigcontext sc; - struct user_i387_struct fp; - void __user *buf; - int err; - - err = copy_from_user(&sc, from, sizeof(sc)); - if (err) - return err; - -#define GETREG(regno, regname) regs->regs.gp[HOST_##regno] = sc.regname - - GETREG(R8, r8); - GETREG(R9, r9); - GETREG(R10, r10); - GETREG(R11, r11); - GETREG(R12, r12); - GETREG(R13, r13); - GETREG(R14, r14); - GETREG(R15, r15); - GETREG(RDI, di); - GETREG(RSI, si); - GETREG(RBP, bp); - GETREG(RBX, bx); - GETREG(RDX, dx); - GETREG(RAX, ax); - GETREG(RCX, cx); - GETREG(SP, sp); - GETREG(IP, ip); - GETREG(EFLAGS, flags); - GETREG(CS, cs); -#undef GETREG - - buf = sc.fpstate; - - err = copy_from_user(&fp, buf, sizeof(struct user_i387_struct)); - if (err) - return 1; - - err = restore_fp_registers(userspace_pid[current_thread_info()->cpu], - (unsigned long *) &fp); - if (err < 0) { - printk(KERN_ERR "copy_sc_from_user - " - "restore_fp_registers failed, errno = %d\n", - -err); - return 1; - } - - return 0; -} - -static int copy_sc_to_user(struct sigcontext __user *to, - struct _fpstate __user *to_fp, struct pt_regs *regs, - unsigned long mask, unsigned long sp) -{ - struct faultinfo * fi = ¤t->thread.arch.faultinfo; - struct sigcontext sc; - struct user_i387_struct fp; - int err = 0; - memset(&sc, 0, sizeof(struct sigcontext)); - -#define PUTREG(regno, regname) sc.regname = regs->regs.gp[HOST_##regno] - - PUTREG(RDI, di); - PUTREG(RSI, si); - PUTREG(RBP, bp); - /* - * Must use original RSP, which is passed in, rather than what's in - * signal frame. - */ - sc.sp = sp; - PUTREG(RBX, bx); - PUTREG(RDX, dx); - PUTREG(RCX, cx); - PUTREG(RAX, ax); - PUTREG(R8, r8); - PUTREG(R9, r9); - PUTREG(R10, r10); - PUTREG(R11, r11); - PUTREG(R12, r12); - PUTREG(R13, r13); - PUTREG(R14, r14); - PUTREG(R15, r15); - PUTREG(CS, cs); /* XXX x86_64 doesn't do this */ - - sc.cr2 = fi->cr2; - sc.err = fi->error_code; - sc.trapno = fi->trap_no; - - PUTREG(IP, ip); - PUTREG(EFLAGS, flags); -#undef PUTREG - - sc.oldmask = mask; - - err = copy_to_user(to, &sc, sizeof(struct sigcontext)); - if (err) - return 1; - - err = save_fp_registers(userspace_pid[current_thread_info()->cpu], - (unsigned long *) &fp); - if (err < 0) { - printk(KERN_ERR "copy_sc_from_user - restore_fp_registers " - "failed, errno = %d\n", -err); - return 1; - } - - if (copy_to_user(to_fp, &fp, sizeof(struct user_i387_struct))) - return 1; - - return err; -} - -struct rt_sigframe -{ - char __user *pretcode; - struct ucontext uc; - struct siginfo info; - struct _fpstate fpstate; -}; - -int setup_signal_stack_si(unsigned long stack_top, int sig, - struct k_sigaction *ka, struct pt_regs * regs, - siginfo_t *info, sigset_t *set) -{ - struct rt_sigframe __user *frame; - unsigned long save_sp = PT_REGS_RSP(regs); - int err = 0; - struct task_struct *me = current; - - frame = (struct rt_sigframe __user *) - round_down(stack_top - sizeof(struct rt_sigframe), 16); - /* Subtract 128 for a red zone and 8 for proper alignment */ - frame = (struct rt_sigframe __user *) ((unsigned long) frame - 128 - 8); - - if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto out; - - if (ka->sa.sa_flags & SA_SIGINFO) { - err |= copy_siginfo_to_user(&frame->info, info); - if (err) - goto out; - } - - /* - * Update SP now because the page fault handler refuses to extend - * the stack if the faulting address is too far below the current - * SP, which frame now certainly is. If there's an error, the original - * value is restored on the way out. - * When writing the sigcontext to the stack, we have to write the - * original value, so that's passed to copy_sc_to_user, which does - * the right thing with it. - */ - PT_REGS_RSP(regs) = (unsigned long) frame; - - /* Create the ucontext. */ - err |= __put_user(0, &frame->uc.uc_flags); - err |= __put_user(0, &frame->uc.uc_link); - err |= __put_user(me->sas_ss_sp, &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(save_sp), - &frame->uc.uc_stack.ss_flags); - err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size); - err |= copy_sc_to_user(&frame->uc.uc_mcontext, &frame->fpstate, regs, - set->sig[0], save_sp); - err |= __put_user(&frame->fpstate, &frame->uc.uc_mcontext.fpstate); - if (sizeof(*set) == 16) { - __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]); - __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]); - } - else - err |= __copy_to_user(&frame->uc.uc_sigmask, set, - sizeof(*set)); - - /* - * Set up to return from userspace. If provided, use a stub - * already in userspace. - */ - /* x86-64 should always use SA_RESTORER. */ - if (ka->sa.sa_flags & SA_RESTORER) - err |= __put_user(ka->sa.sa_restorer, &frame->pretcode); - else - /* could use a vstub here */ - goto restore_sp; - - if (err) - goto restore_sp; - - /* Set up registers for signal handler */ - { - struct exec_domain *ed = current_thread_info()->exec_domain; - if (unlikely(ed && ed->signal_invmap && sig < 32)) - sig = ed->signal_invmap[sig]; - } - - PT_REGS_RDI(regs) = sig; - /* In case the signal handler was declared without prototypes */ - PT_REGS_RAX(regs) = 0; - - /* - * This also works for non SA_SIGINFO handlers because they expect the - * next argument after the signal number on the stack. - */ - PT_REGS_RSI(regs) = (unsigned long) &frame->info; - PT_REGS_RDX(regs) = (unsigned long) &frame->uc; - PT_REGS_RIP(regs) = (unsigned long) ka->sa.sa_handler; - out: - return err; - -restore_sp: - PT_REGS_RSP(regs) = save_sp; - return err; -} - -long sys_rt_sigreturn(struct pt_regs *regs) -{ - unsigned long sp = PT_REGS_SP(¤t->thread.regs); - struct rt_sigframe __user *frame = - (struct rt_sigframe __user *)(sp - 8); - struct ucontext __user *uc = &frame->uc; - sigset_t set; - - if (copy_from_user(&set, &uc->uc_sigmask, sizeof(set))) - goto segfault; - - sigdelsetmask(&set, ~_BLOCKABLE); - set_current_blocked(&set); - - if (copy_sc_from_user(¤t->thread.regs, &uc->uc_mcontext)) - goto segfault; - - /* Avoid ERESTART handling */ - PT_REGS_SYSCALL_NR(¤t->thread.regs) = -1; - return PT_REGS_SYSCALL_RET(¤t->thread.regs); - - segfault: - force_sig(SIGSEGV, current); - return 0; -} diff --git a/arch/um/sys-x86_64/stub.S b/arch/um/sys-x86_64/stub.S deleted file mode 100644 index 20e4a96a6dcb..000000000000 --- a/arch/um/sys-x86_64/stub.S +++ /dev/null @@ -1,66 +0,0 @@ -#include "as-layout.h" - - .globl syscall_stub -.section .__syscall_stub, "ax" -syscall_stub: - syscall - /* We don't have 64-bit constants, so this constructs the address - * we need. - */ - movq $(STUB_DATA >> 32), %rbx - salq $32, %rbx - movq $(STUB_DATA & 0xffffffff), %rcx - or %rcx, %rbx - movq %rax, (%rbx) - int3 - - .globl batch_syscall_stub -batch_syscall_stub: - mov $(STUB_DATA >> 32), %rbx - sal $32, %rbx - mov $(STUB_DATA & 0xffffffff), %rax - or %rax, %rbx - /* load pointer to first operation */ - mov %rbx, %rsp - add $0x10, %rsp -again: - /* load length of additional data */ - mov 0x0(%rsp), %rax - - /* if(length == 0) : end of list */ - /* write possible 0 to header */ - mov %rax, 8(%rbx) - cmp $0, %rax - jz done - - /* save current pointer */ - mov %rsp, 8(%rbx) - - /* skip additional data */ - add %rax, %rsp - - /* load syscall-# */ - pop %rax - - /* load syscall params */ - pop %rdi - pop %rsi - pop %rdx - pop %r10 - pop %r8 - pop %r9 - - /* execute syscall */ - syscall - - /* check return value */ - pop %rcx - cmp %rcx, %rax - je again - -done: - /* save return value */ - mov %rax, (%rbx) - - /* stop */ - int3 diff --git a/arch/um/sys-x86_64/stub_segv.c b/arch/um/sys-x86_64/stub_segv.c deleted file mode 100644 index ced051afc705..000000000000 --- a/arch/um/sys-x86_64/stub_segv.c +++ /dev/null @@ -1,22 +0,0 @@ -/* - * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#include <signal.h> -#include "as-layout.h" -#include "sysdep/stub.h" -#include "sysdep/faultinfo.h" -#include "sysdep/sigcontext.h" - -void __attribute__ ((__section__ (".__syscall_stub"))) -stub_segv_handler(int sig) -{ - struct ucontext *uc; - - __asm__ __volatile__("movq %%rdx, %0" : "=g" (uc) :); - GET_FAULTINFO_FROM_SC(*((struct faultinfo *) STUB_DATA), - &uc->uc_mcontext); - trap_myself(); -} - diff --git a/arch/um/sys-x86_64/syscall_table.c b/arch/um/sys-x86_64/syscall_table.c deleted file mode 100644 index f46de82d675c..000000000000 --- a/arch/um/sys-x86_64/syscall_table.c +++ /dev/null @@ -1,64 +0,0 @@ -/* - * System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c - * with some changes for UML. - */ - -#include <linux/linkage.h> -#include <linux/sys.h> -#include <linux/cache.h> - -#define __NO_STUBS - -/* - * Below you can see, in terms of #define's, the differences between the x86-64 - * and the UML syscall table. - */ - -/* Not going to be implemented by UML, since we have no hardware. */ -#define stub_iopl sys_ni_syscall -#define sys_ioperm sys_ni_syscall - -/* - * The UML TLS problem. Note that x86_64 does not implement this, so the below - * is needed only for the ia32 compatibility. - */ - -/* On UML we call it this way ("old" means it's not mmap2) */ -#define sys_mmap old_mmap - -#define stub_clone sys_clone -#define stub_fork sys_fork -#define stub_vfork sys_vfork -#define stub_execve sys_execve -#define stub_rt_sigsuspend sys_rt_sigsuspend -#define stub_sigaltstack sys_sigaltstack -#define stub_rt_sigreturn sys_rt_sigreturn - -#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ; -#undef _ASM_X86_UNISTD_64_H -#include "../../x86/include/asm/unistd_64.h" - -#undef __SYSCALL -#define __SYSCALL(nr, sym) [ nr ] = sym, -#undef _ASM_X86_UNISTD_64_H - -typedef void (*sys_call_ptr_t)(void); - -extern void sys_ni_syscall(void); - -/* - * We used to have a trick here which made sure that holes in the - * x86_64 table were filled in with sys_ni_syscall, but a comment in - * unistd_64.h says that holes aren't allowed, so the trick was - * removed. - * The trick looked like this - * [0 ... UM_NR_syscall_max] = &sys_ni_syscall - * before including unistd_64.h - the later initializations overwrote - * the sys_ni_syscall filler. - */ - -sys_call_ptr_t sys_call_table[] __cacheline_aligned = { -#include "../../x86/include/asm/unistd_64.h" -}; - -int syscall_table_size = sizeof(sys_call_table); diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c deleted file mode 100644 index f3d82bb6e15a..000000000000 --- a/arch/um/sys-x86_64/syscalls.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Copyright 2003 PathScale, Inc. - * - * Licensed under the GPL - */ - -#include "linux/linkage.h" -#include "linux/personality.h" -#include "linux/utsname.h" -#include "asm/prctl.h" /* XXX This should get the constants from libc */ -#include "asm/uaccess.h" -#include "os.h" - -long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr) -{ - unsigned long *ptr = addr, tmp; - long ret; - int pid = task->mm->context.id.u.pid; - - /* - * With ARCH_SET_FS (and ARCH_SET_GS is treated similarly to - * be safe), we need to call arch_prctl on the host because - * setting %fs may result in something else happening (like a - * GDT or thread.fs being set instead). So, we let the host - * fiddle the registers and thread struct and restore the - * registers afterwards. - * - * So, the saved registers are stored to the process (this - * needed because a stub may have been the last thing to run), - * arch_prctl is run on the host, then the registers are read - * back. - */ - switch (code) { - case ARCH_SET_FS: - case ARCH_SET_GS: - ret = restore_registers(pid, ¤t->thread.regs.regs); - if (ret) - return ret; - break; - case ARCH_GET_FS: - case ARCH_GET_GS: - /* - * With these two, we read to a local pointer and - * put_user it to the userspace pointer that we were - * given. If addr isn't valid (because it hasn't been - * faulted in or is just bogus), we want put_user to - * fault it in (or return -EFAULT) instead of having - * the host return -EFAULT. - */ - ptr = &tmp; - } - - ret = os_arch_prctl(pid, code, ptr); - if (ret) - return ret; - - switch (code) { - case ARCH_SET_FS: - current->thread.arch.fs = (unsigned long) ptr; - ret = save_registers(pid, ¤t->thread.regs.regs); - break; - case ARCH_SET_GS: - ret = save_registers(pid, ¤t->thread.regs.regs); - break; - case ARCH_GET_FS: - ret = put_user(tmp, addr); - break; - case ARCH_GET_GS: - ret = put_user(tmp, addr); - break; - } - - return ret; -} - -long sys_arch_prctl(int code, unsigned long addr) -{ - return arch_prctl(current, code, (unsigned long __user *) addr); -} - -long sys_clone(unsigned long clone_flags, unsigned long newsp, - void __user *parent_tid, void __user *child_tid) -{ - long ret; - - if (!newsp) - newsp = UPT_SP(¤t->thread.regs.regs); - current->thread.forking = 1; - ret = do_fork(clone_flags, newsp, ¤t->thread.regs, 0, parent_tid, - child_tid); - current->thread.forking = 0; - return ret; -} - -void arch_switch_to(struct task_struct *to) -{ - if ((to->thread.arch.fs == 0) || (to->mm == NULL)) - return; - - arch_prctl(to, ARCH_SET_FS, (void __user *) to->thread.arch.fs); -} diff --git a/arch/um/sys-x86_64/sysrq.c b/arch/um/sys-x86_64/sysrq.c deleted file mode 100644 index f4f82beb3508..000000000000 --- a/arch/um/sys-x86_64/sysrq.c +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Copyright 2003 PathScale, Inc. - * - * Licensed under the GPL - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/utsname.h> -#include <asm/current.h> -#include <asm/ptrace.h> -#include "sysrq.h" - -void __show_regs(struct pt_regs *regs) -{ - printk("\n"); - print_modules(); - printk(KERN_INFO "Pid: %d, comm: %.20s %s %s\n", task_pid_nr(current), - current->comm, print_tainted(), init_utsname()->release); - printk(KERN_INFO "RIP: %04lx:[<%016lx>]\n", PT_REGS_CS(regs) & 0xffff, - PT_REGS_RIP(regs)); - printk(KERN_INFO "RSP: %016lx EFLAGS: %08lx\n", PT_REGS_RSP(regs), - PT_REGS_EFLAGS(regs)); - printk(KERN_INFO "RAX: %016lx RBX: %016lx RCX: %016lx\n", - PT_REGS_RAX(regs), PT_REGS_RBX(regs), PT_REGS_RCX(regs)); - printk(KERN_INFO "RDX: %016lx RSI: %016lx RDI: %016lx\n", - PT_REGS_RDX(regs), PT_REGS_RSI(regs), PT_REGS_RDI(regs)); - printk(KERN_INFO "RBP: %016lx R08: %016lx R09: %016lx\n", - PT_REGS_RBP(regs), PT_REGS_R8(regs), PT_REGS_R9(regs)); - printk(KERN_INFO "R10: %016lx R11: %016lx R12: %016lx\n", - PT_REGS_R10(regs), PT_REGS_R11(regs), PT_REGS_R12(regs)); - printk(KERN_INFO "R13: %016lx R14: %016lx R15: %016lx\n", - PT_REGS_R13(regs), PT_REGS_R14(regs), PT_REGS_R15(regs)); -} - -void show_regs(struct pt_regs *regs) -{ - __show_regs(regs); - show_trace(current, (unsigned long *) ®s); -} diff --git a/arch/um/sys-x86_64/tls.c b/arch/um/sys-x86_64/tls.c deleted file mode 100644 index f7ba46200ecd..000000000000 --- a/arch/um/sys-x86_64/tls.c +++ /dev/null @@ -1,17 +0,0 @@ -#include "linux/sched.h" - -void clear_flushed_tls(struct task_struct *task) -{ -} - -int arch_copy_tls(struct task_struct *t) -{ - /* - * If CLONE_SETTLS is set, we need to save the thread id - * (which is argument 5, child_tid, of clone) so it can be set - * during context switches. - */ - t->thread.arch.fs = t->thread.regs.regs.gp[R8 / sizeof(long)]; - - return 0; -} diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c deleted file mode 100644 index 973585414a66..000000000000 --- a/arch/um/sys-x86_64/user-offsets.c +++ /dev/null @@ -1,65 +0,0 @@ -#include <stdio.h> -#include <stddef.h> -#include <signal.h> -#include <sys/poll.h> -#include <sys/mman.h> -#include <sys/user.h> -#define __FRAME_OFFSETS -#include <asm/ptrace.h> -#include <asm/types.h> - -#define DEFINE(sym, val) \ - asm volatile("\n->" #sym " %0 " #val : : "i" (val)) - -#define DEFINE_LONGS(sym, val) \ - asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long))) - -#define OFFSET(sym, str, mem) \ - DEFINE(sym, offsetof(struct str, mem)); - -void foo(void) -{ - OFFSET(HOST_SC_CR2, sigcontext, cr2); - OFFSET(HOST_SC_ERR, sigcontext, err); - OFFSET(HOST_SC_TRAPNO, sigcontext, trapno); - - DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long)); - DEFINE_LONGS(HOST_RBX, RBX); - DEFINE_LONGS(HOST_RCX, RCX); - DEFINE_LONGS(HOST_RDI, RDI); - DEFINE_LONGS(HOST_RSI, RSI); - DEFINE_LONGS(HOST_RDX, RDX); - DEFINE_LONGS(HOST_RBP, RBP); - DEFINE_LONGS(HOST_RAX, RAX); - DEFINE_LONGS(HOST_R8, R8); - DEFINE_LONGS(HOST_R9, R9); - DEFINE_LONGS(HOST_R10, R10); - DEFINE_LONGS(HOST_R11, R11); - DEFINE_LONGS(HOST_R12, R12); - DEFINE_LONGS(HOST_R13, R13); - DEFINE_LONGS(HOST_R14, R14); - DEFINE_LONGS(HOST_R15, R15); - DEFINE_LONGS(HOST_ORIG_RAX, ORIG_RAX); - DEFINE_LONGS(HOST_CS, CS); - DEFINE_LONGS(HOST_SS, SS); - DEFINE_LONGS(HOST_EFLAGS, EFLAGS); -#if 0 - DEFINE_LONGS(HOST_FS, FS); - DEFINE_LONGS(HOST_GS, GS); - DEFINE_LONGS(HOST_DS, DS); - DEFINE_LONGS(HOST_ES, ES); -#endif - - DEFINE_LONGS(HOST_IP, RIP); - DEFINE_LONGS(HOST_SP, RSP); - DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct)); - - /* XXX Duplicated between i386 and x86_64 */ - DEFINE(UM_POLLIN, POLLIN); - DEFINE(UM_POLLPRI, POLLPRI); - DEFINE(UM_POLLOUT, POLLOUT); - - DEFINE(UM_PROT_READ, PROT_READ); - DEFINE(UM_PROT_WRITE, PROT_WRITE); - DEFINE(UM_PROT_EXEC, PROT_EXEC); -} diff --git a/arch/um/sys-x86_64/vdso/Makefile b/arch/um/sys-x86_64/vdso/Makefile deleted file mode 100644 index 5dffe6d46686..000000000000 --- a/arch/um/sys-x86_64/vdso/Makefile +++ /dev/null @@ -1,90 +0,0 @@ -# -# Building vDSO images for x86. -# - -VDSO64-y := y - -vdso-install-$(VDSO64-y) += vdso.so - - -# files to link into the vdso -vobjs-y := vdso-note.o um_vdso.o - -# files to link into kernel -obj-$(VDSO64-y) += vdso.o vma.o - -vobjs := $(foreach F,$(vobjs-y),$(obj)/$F) - -$(obj)/vdso.o: $(obj)/vdso.so - -targets += vdso.so vdso.so.dbg vdso.lds $(vobjs-y) - -export CPPFLAGS_vdso.lds += -P -C - -VDSO_LDFLAGS_vdso.lds = -m64 -Wl,-soname=linux-vdso.so.1 \ - -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096 - -$(obj)/vdso.o: $(src)/vdso.S $(obj)/vdso.so - -$(obj)/vdso.so.dbg: $(src)/vdso.lds $(vobjs) FORCE - $(call if_changed,vdso) - -$(obj)/%.so: OBJCOPYFLAGS := -S -$(obj)/%.so: $(obj)/%.so.dbg FORCE - $(call if_changed,objcopy) - -# -# Don't omit frame pointers for ease of userspace debugging, but do -# optimize sibling calls. -# -CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \ - $(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) \ - -fno-omit-frame-pointer -foptimize-sibling-calls - -$(vobjs): KBUILD_CFLAGS += $(CFL) - -# -# vDSO code runs in userspace and -pg doesn't help with profiling anyway. -# -CFLAGS_REMOVE_vdso-note.o = -pg -CFLAGS_REMOVE_um_vdso.o = -pg - -targets += vdso-syms.lds -obj-$(VDSO64-y) += vdso-syms.lds - -# -# Match symbols in the DSO that look like VDSO*; produce a file of constants. -# -sed-vdsosym := -e 's/^00*/0/' \ - -e 's/^\([0-9a-fA-F]*\) . \(VDSO[a-zA-Z0-9_]*\)$$/\2 = 0x\1;/p' -quiet_cmd_vdsosym = VDSOSYM $@ -define cmd_vdsosym - $(NM) $< | LC_ALL=C sed -n $(sed-vdsosym) | LC_ALL=C sort > $@ -endef - -$(obj)/%-syms.lds: $(obj)/%.so.dbg FORCE - $(call if_changed,vdsosym) - -# -# The DSO images are built using a special linker script. -# -quiet_cmd_vdso = VDSO $@ - cmd_vdso = $(CC) -nostdlib -o $@ \ - $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \ - -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \ - sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@' - -VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) -GCOV_PROFILE := n - -# -# Install the unstripped copy of vdso*.so listed in $(vdso-install-y). -# -quiet_cmd_vdso_install = INSTALL $@ - cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ -$(vdso-install-y): %.so: $(obj)/%.so.dbg FORCE - @mkdir -p $(MODLIB)/vdso - $(call cmd,vdso_install) - -PHONY += vdso_install $(vdso-install-y) -vdso_install: $(vdso-install-y) diff --git a/arch/um/sys-x86_64/vdso/checkundef.sh b/arch/um/sys-x86_64/vdso/checkundef.sh deleted file mode 100644 index 7ee90a9b549d..000000000000 --- a/arch/um/sys-x86_64/vdso/checkundef.sh +++ /dev/null @@ -1,10 +0,0 @@ -#!/bin/sh -nm="$1" -file="$2" -$nm "$file" | grep '^ *U' > /dev/null 2>&1 -if [ $? -eq 1 ]; then - exit 0 -else - echo "$file: undefined symbols found" >&2 - exit 1 -fi diff --git a/arch/um/sys-x86_64/vdso/um_vdso.c b/arch/um/sys-x86_64/vdso/um_vdso.c deleted file mode 100644 index 7c441b59d375..000000000000 --- a/arch/um/sys-x86_64/vdso/um_vdso.c +++ /dev/null @@ -1,71 +0,0 @@ -/* - * Copyright (C) 2011 Richard Weinberger <richrd@nod.at> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This vDSO turns all calls into a syscall so that UML can trap them. - */ - - -/* Disable profiling for userspace code */ -#define DISABLE_BRANCH_PROFILING - -#include <linux/time.h> -#include <linux/getcpu.h> -#include <asm/unistd.h> - -int __vdso_clock_gettime(clockid_t clock, struct timespec *ts) -{ - long ret; - - asm("syscall" : "=a" (ret) : - "0" (__NR_clock_gettime), "D" (clock), "S" (ts) : "memory"); - - return ret; -} -int clock_gettime(clockid_t, struct timespec *) - __attribute__((weak, alias("__vdso_clock_gettime"))); - -int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) -{ - long ret; - - asm("syscall" : "=a" (ret) : - "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory"); - - return ret; -} -int gettimeofday(struct timeval *, struct timezone *) - __attribute__((weak, alias("__vdso_gettimeofday"))); - -time_t __vdso_time(time_t *t) -{ - long secs; - - asm volatile("syscall" - : "=a" (secs) - : "0" (__NR_time), "D" (t) : "cc", "r11", "cx", "memory"); - - return secs; -} -int time(time_t *t) __attribute__((weak, alias("__vdso_time"))); - -long -__vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused) -{ - /* - * UML does not support SMP, we can cheat here. :) - */ - - if (cpu) - *cpu = 0; - if (node) - *node = 0; - - return 0; -} - -long getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache) - __attribute__((weak, alias("__vdso_getcpu"))); diff --git a/arch/um/sys-x86_64/vdso/vdso-layout.lds.S b/arch/um/sys-x86_64/vdso/vdso-layout.lds.S deleted file mode 100644 index 634a2cf62046..000000000000 --- a/arch/um/sys-x86_64/vdso/vdso-layout.lds.S +++ /dev/null @@ -1,64 +0,0 @@ -/* - * Linker script for vDSO. This is an ELF shared object prelinked to - * its virtual address, and with only one read-only segment. - * This script controls its layout. - */ - -SECTIONS -{ - . = VDSO_PRELINK + SIZEOF_HEADERS; - - .hash : { *(.hash) } :text - .gnu.hash : { *(.gnu.hash) } - .dynsym : { *(.dynsym) } - .dynstr : { *(.dynstr) } - .gnu.version : { *(.gnu.version) } - .gnu.version_d : { *(.gnu.version_d) } - .gnu.version_r : { *(.gnu.version_r) } - - .note : { *(.note.*) } :text :note - - .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr - .eh_frame : { KEEP (*(.eh_frame)) } :text - - .dynamic : { *(.dynamic) } :text :dynamic - - .rodata : { *(.rodata*) } :text - .data : { - *(.data*) - *(.sdata*) - *(.got.plt) *(.got) - *(.gnu.linkonce.d.*) - *(.bss*) - *(.dynbss*) - *(.gnu.linkonce.b.*) - } - - .altinstructions : { *(.altinstructions) } - .altinstr_replacement : { *(.altinstr_replacement) } - - /* - * Align the actual code well away from the non-instruction data. - * This is the best thing for the I-cache. - */ - . = ALIGN(0x100); - - .text : { *(.text*) } :text =0x90909090 -} - -/* - * Very old versions of ld do not recognize this name token; use the constant. - */ -#define PT_GNU_EH_FRAME 0x6474e550 - -/* - * We must supply the ELF program headers explicitly to get just one - * PT_LOAD segment, and set the flags explicitly to make segments read-only. - */ -PHDRS -{ - text PT_LOAD FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */ - dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ - note PT_NOTE FLAGS(4); /* PF_R */ - eh_frame_hdr PT_GNU_EH_FRAME; -} diff --git a/arch/um/sys-x86_64/vdso/vdso-note.S b/arch/um/sys-x86_64/vdso/vdso-note.S deleted file mode 100644 index 79a071e4357e..000000000000 --- a/arch/um/sys-x86_64/vdso/vdso-note.S +++ /dev/null @@ -1,12 +0,0 @@ -/* - * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text. - * Here we can supply some information useful to userland. - */ - -#include <linux/uts.h> -#include <linux/version.h> -#include <linux/elfnote.h> - -ELFNOTE_START(Linux, 0, "a") - .long LINUX_VERSION_CODE -ELFNOTE_END diff --git a/arch/um/sys-x86_64/vdso/vdso.S b/arch/um/sys-x86_64/vdso/vdso.S deleted file mode 100644 index ec82c1686bd6..000000000000 --- a/arch/um/sys-x86_64/vdso/vdso.S +++ /dev/null @@ -1,10 +0,0 @@ -#include <linux/init.h> - -__INITDATA - - .globl vdso_start, vdso_end -vdso_start: - .incbin "arch/um/sys-x86_64/vdso/vdso.so" -vdso_end: - -__FINIT diff --git a/arch/um/sys-x86_64/vdso/vdso.lds.S b/arch/um/sys-x86_64/vdso/vdso.lds.S deleted file mode 100644 index b96b2677cad8..000000000000 --- a/arch/um/sys-x86_64/vdso/vdso.lds.S +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Linker script for 64-bit vDSO. - * We #include the file to define the layout details. - * Here we only choose the prelinked virtual address. - * - * This file defines the version script giving the user-exported symbols in - * the DSO. We can define local symbols here called VDSO* to make their - * values visible using the asm-x86/vdso.h macros from the kernel proper. - */ - -#define VDSO_PRELINK 0xffffffffff700000 -#include "vdso-layout.lds.S" - -/* - * This controls what userland symbols we export from the vDSO. - */ -VERSION { - LINUX_2.6 { - global: - clock_gettime; - __vdso_clock_gettime; - gettimeofday; - __vdso_gettimeofday; - getcpu; - __vdso_getcpu; - time; - __vdso_time; - local: *; - }; -} - -VDSO64_PRELINK = VDSO_PRELINK; diff --git a/arch/um/sys-x86_64/vdso/vma.c b/arch/um/sys-x86_64/vdso/vma.c deleted file mode 100644 index 9495c8d0ce37..000000000000 --- a/arch/um/sys-x86_64/vdso/vma.c +++ /dev/null @@ -1,74 +0,0 @@ -/* - * Copyright (C) 2011 Richard Weinberger <richrd@nod.at> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/slab.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <asm/page.h> -#include <linux/init.h> - -unsigned int __read_mostly vdso_enabled = 1; -unsigned long um_vdso_addr; - -extern unsigned long task_size; -extern char vdso_start[], vdso_end[]; - -static struct page **vdsop; - -static int __init init_vdso(void) -{ - struct page *um_vdso; - - BUG_ON(vdso_end - vdso_start > PAGE_SIZE); - - um_vdso_addr = task_size - PAGE_SIZE; - - vdsop = kmalloc(GFP_KERNEL, sizeof(struct page *)); - if (!vdsop) - goto oom; - - um_vdso = alloc_page(GFP_KERNEL); - if (!um_vdso) { - kfree(vdsop); - - goto oom; - } - - copy_page(page_address(um_vdso), vdso_start); - *vdsop = um_vdso; - - return 0; - -oom: - printk(KERN_ERR "Cannot allocate vdso\n"); - vdso_enabled = 0; - - return -ENOMEM; -} -subsys_initcall(init_vdso); - -int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) -{ - int err; - struct mm_struct *mm = current->mm; - - if (!vdso_enabled) - return 0; - - down_write(&mm->mmap_sem); - - err = install_special_mapping(mm, um_vdso_addr, PAGE_SIZE, - VM_READ|VM_EXEC| - VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC| - VM_ALWAYSDUMP, - vdsop); - - up_write(&mm->mmap_sem); - - return err; -} |