diff options
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/Makefile | 2 | ||||
| -rw-r--r-- | arch/x86_64/ia32/Makefile | 35 | ||||
| -rw-r--r-- | arch/x86_64/ia32/audit.c | 42 | ||||
| -rw-r--r-- | arch/x86_64/ia32/fpu32.c | 183 | ||||
| -rw-r--r-- | arch/x86_64/ia32/ia32_aout.c | 528 | ||||
| -rw-r--r-- | arch/x86_64/ia32/ia32_binfmt.c | 320 | ||||
| -rw-r--r-- | arch/x86_64/ia32/ia32_signal.c | 617 | ||||
| -rw-r--r-- | arch/x86_64/ia32/ia32entry.S | 736 | ||||
| -rw-r--r-- | arch/x86_64/ia32/ipc32.c | 57 | ||||
| -rw-r--r-- | arch/x86_64/ia32/mmap32.c | 79 | ||||
| -rw-r--r-- | arch/x86_64/ia32/ptrace32.c | 404 | ||||
| -rw-r--r-- | arch/x86_64/ia32/sys_ia32.c | 889 | ||||
| -rw-r--r-- | arch/x86_64/ia32/syscall32.c | 83 | ||||
| -rw-r--r-- | arch/x86_64/ia32/syscall32_syscall.S | 17 | ||||
| -rw-r--r-- | arch/x86_64/ia32/tls32.c | 163 | ||||
| -rw-r--r-- | arch/x86_64/ia32/vsyscall-sigreturn.S | 143 | ||||
| -rw-r--r-- | arch/x86_64/ia32/vsyscall-syscall.S | 69 | ||||
| -rw-r--r-- | arch/x86_64/ia32/vsyscall-sysenter.S | 95 | ||||
| -rw-r--r-- | arch/x86_64/ia32/vsyscall.lds | 80 |
19 files changed, 1 insertions, 4541 deletions
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile index 4208a0ded52..189d80d3a89 100644 --- a/arch/x86_64/Makefile +++ b/arch/x86_64/Makefile @@ -78,7 +78,7 @@ core-y += arch/x86_64/kernel/ \ arch/x86/mm/ \ arch/x86/crypto/ \ arch/x86/vdso/ -core-$(CONFIG_IA32_EMULATION) += arch/x86_64/ia32/ +core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/ drivers-$(CONFIG_PCI) += arch/x86/pci/ drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/ diff --git a/arch/x86_64/ia32/Makefile b/arch/x86_64/ia32/Makefile deleted file mode 100644 index cdae36435e2..00000000000 --- a/arch/x86_64/ia32/Makefile +++ /dev/null @@ -1,35 +0,0 @@ -# -# Makefile for the ia32 kernel emulation subsystem. -# - -obj-$(CONFIG_IA32_EMULATION) := ia32entry.o sys_ia32.o ia32_signal.o tls32.o \ - ia32_binfmt.o fpu32.o ptrace32.o syscall32.o syscall32_syscall.o \ - mmap32.o - -sysv-$(CONFIG_SYSVIPC) := ipc32.o -obj-$(CONFIG_IA32_EMULATION) += $(sysv-y) - -obj-$(CONFIG_IA32_AOUT) += ia32_aout.o - -audit-class-$(CONFIG_AUDIT) := audit.o -obj-$(CONFIG_IA32_EMULATION) += $(audit-class-y) - -$(obj)/syscall32_syscall.o: \ - $(foreach F,sysenter syscall,$(obj)/vsyscall-$F.so) - -# Teach kbuild about targets -targets := $(foreach F,sysenter syscall,vsyscall-$F.o vsyscall-$F.so) - -# The DSO images are built using a special linker script -quiet_cmd_syscall = SYSCALL $@ - cmd_syscall = $(CC) -m32 -nostdlib -shared -s \ - $(call ld-option, -Wl$(comma)--hash-style=sysv) \ - -Wl,-soname=linux-gate.so.1 -o $@ \ - -Wl,-T,$(filter-out FORCE,$^) - -$(obj)/vsyscall-sysenter.so $(obj)/vsyscall-syscall.so: \ -$(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE - $(call if_changed,syscall) - -AFLAGS_vsyscall-sysenter.o = -m32 -Wa,-32 -AFLAGS_vsyscall-syscall.o = -m32 -Wa,-32 diff --git a/arch/x86_64/ia32/audit.c b/arch/x86_64/ia32/audit.c deleted file mode 100644 index 8850fe40ea3..00000000000 --- a/arch/x86_64/ia32/audit.c +++ /dev/null @@ -1,42 +0,0 @@ -#include <asm-i386/unistd.h> - -unsigned ia32_dir_class[] = { -#include <asm-generic/audit_dir_write.h> -~0U -}; - -unsigned ia32_chattr_class[] = { -#include <asm-generic/audit_change_attr.h> -~0U -}; - -unsigned ia32_write_class[] = { -#include <asm-generic/audit_write.h> -~0U -}; - -unsigned ia32_read_class[] = { -#include <asm-generic/audit_read.h> -~0U -}; - -unsigned ia32_signal_class[] = { -#include <asm-generic/audit_signal.h> -~0U -}; - -int ia32_classify_syscall(unsigned syscall) -{ - switch(syscall) { - case __NR_open: - return 2; - case __NR_openat: - return 3; - case __NR_socketcall: - return 4; - case __NR_execve: - return 5; - default: - return 1; - } -} diff --git a/arch/x86_64/ia32/fpu32.c b/arch/x86_64/ia32/fpu32.c deleted file mode 100644 index 2c8209a3605..00000000000 --- a/arch/x86_64/ia32/fpu32.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * Copyright 2002 Andi Kleen, SuSE Labs. - * FXSAVE<->i387 conversion support. Based on code by Gareth Hughes. - * This is used for ptrace, signals and coredumps in 32bit emulation. - */ - -#include <linux/sched.h> -#include <asm/sigcontext32.h> -#include <asm/processor.h> -#include <asm/uaccess.h> -#include <asm/i387.h> - -static inline unsigned short twd_i387_to_fxsr(unsigned short twd) -{ - unsigned int tmp; /* to avoid 16 bit prefixes in the code */ - - /* Transform each pair of bits into 01 (valid) or 00 (empty) */ - tmp = ~twd; - tmp = (tmp | (tmp>>1)) & 0x5555; /* 0V0V0V0V0V0V0V0V */ - /* and move the valid bits to the lower byte. */ - tmp = (tmp | (tmp >> 1)) & 0x3333; /* 00VV00VV00VV00VV */ - tmp = (tmp | (tmp >> 2)) & 0x0f0f; /* 0000VVVV0000VVVV */ - tmp = (tmp | (tmp >> 4)) & 0x00ff; /* 00000000VVVVVVVV */ - return tmp; -} - -static inline unsigned long twd_fxsr_to_i387(struct i387_fxsave_struct *fxsave) -{ - struct _fpxreg *st = NULL; - unsigned long tos = (fxsave->swd >> 11) & 7; - unsigned long twd = (unsigned long) fxsave->twd; - unsigned long tag; - unsigned long ret = 0xffff0000; - int i; - -#define FPREG_ADDR(f, n) ((void *)&(f)->st_space + (n) * 16); - - for (i = 0 ; i < 8 ; i++) { - if (twd & 0x1) { - st = FPREG_ADDR( fxsave, (i - tos) & 7 ); - - switch (st->exponent & 0x7fff) { - case 0x7fff: - tag = 2; /* Special */ - break; - case 0x0000: - if ( !st->significand[0] && - !st->significand[1] && - !st->significand[2] && - !st->significand[3] ) { - tag = 1; /* Zero */ - } else { - tag = 2; /* Special */ - } - break; - default: - if (st->significand[3] & 0x8000) { - tag = 0; /* Valid */ - } else { - tag = 2; /* Special */ - } - break; - } - } else { - tag = 3; /* Empty */ - } - ret |= (tag << (2 * i)); - twd = twd >> 1; - } - return ret; -} - - -static inline int convert_fxsr_from_user(struct i387_fxsave_struct *fxsave, - struct _fpstate_ia32 __user *buf) -{ - struct _fpxreg *to; - struct _fpreg __user *from; - int i; - u32 v; - int err = 0; - -#define G(num,val) err |= __get_user(val, num + (u32 __user *)buf) - G(0, fxsave->cwd); - G(1, fxsave->swd); - G(2, fxsave->twd); - fxsave->twd = twd_i387_to_fxsr(fxsave->twd); - G(3, fxsave->rip); - G(4, v); - fxsave->fop = v>>16; /* cs ignored */ - G(5, fxsave->rdp); - /* 6: ds ignored */ -#undef G - if (err) - return -1; - - to = (struct _fpxreg *)&fxsave->st_space[0]; - from = &buf->_st[0]; - for (i = 0 ; i < 8 ; i++, to++, from++) { - if (__copy_from_user(to, from, sizeof(*from))) - return -1; - } - return 0; -} - - -static inline int convert_fxsr_to_user(struct _fpstate_ia32 __user *buf, - struct i387_fxsave_struct *fxsave, - struct pt_regs *regs, - struct task_struct *tsk) -{ - struct _fpreg __user *to; - struct _fpxreg *from; - int i; - u16 cs,ds; - int err = 0; - - if (tsk == current) { - /* should be actually ds/cs at fpu exception time, - but that information is not available in 64bit mode. */ - asm("movw %%ds,%0 " : "=r" (ds)); - asm("movw %%cs,%0 " : "=r" (cs)); - } else { /* ptrace. task has stopped. */ - ds = tsk->thread.ds; - cs = regs->cs; - } - -#define P(num,val) err |= __put_user(val, num + (u32 __user *)buf) - P(0, (u32)fxsave->cwd | 0xffff0000); - P(1, (u32)fxsave->swd | 0xffff0000); - P(2, twd_fxsr_to_i387(fxsave)); - P(3, (u32)fxsave->rip); - P(4, cs | ((u32)fxsave->fop) << 16); - P(5, fxsave->rdp); - P(6, 0xffff0000 | ds); -#undef P - - if (err) - return -1; - - to = &buf->_st[0]; - from = (struct _fpxreg *) &fxsave->st_space[0]; - for ( i = 0 ; i < 8 ; i++, to++, from++ ) { - if (__copy_to_user(to, from, sizeof(*to))) - return -1; - } - return 0; -} - -int restore_i387_ia32(struct task_struct *tsk, struct _fpstate_ia32 __user *buf, int fsave) -{ - clear_fpu(tsk); - if (!fsave) { - if (__copy_from_user(&tsk->thread.i387.fxsave, - &buf->_fxsr_env[0], - sizeof(struct i387_fxsave_struct))) - return -1; - tsk->thread.i387.fxsave.mxcsr &= mxcsr_feature_mask; - set_stopped_child_used_math(tsk); - } - return convert_fxsr_from_user(&tsk->thread.i387.fxsave, buf); -} - -int save_i387_ia32(struct task_struct *tsk, - struct _fpstate_ia32 __user *buf, - struct pt_regs *regs, - int fsave) -{ - int err = 0; - - init_fpu(tsk); - if (convert_fxsr_to_user(buf, &tsk->thread.i387.fxsave, regs, tsk)) - return -1; - if (fsave) - return 0; - err |= __put_user(tsk->thread.i387.fxsave.swd, &buf->status); - if (fsave) - return err ? -1 : 1; - err |= __put_user(X86_FXSR_MAGIC, &buf->magic); - err |= __copy_to_user(&buf->_fxsr_env[0], &tsk->thread.i387.fxsave, - sizeof(struct i387_fxsave_struct)); - return err ? -1 : 1; -} diff --git a/arch/x86_64/ia32/ia32_aout.c b/arch/x86_64/ia32/ia32_aout.c deleted file mode 100644 index 08781370256..00000000000 --- a/arch/x86_64/ia32/ia32_aout.c +++ /dev/null @@ -1,528 +0,0 @@ -/* - * a.out loader for x86-64 - * - * Copyright (C) 1991, 1992, 1996 Linus Torvalds - * Hacked together by Andi Kleen - */ - -#include <linux/module.h> - -#include <linux/time.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/mman.h> -#include <linux/a.out.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/string.h> -#include <linux/fs.h> -#include <linux/file.h> -#include <linux/stat.h> -#include <linux/fcntl.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/slab.h> -#include <linux/binfmts.h> -#include <linux/personality.h> -#include <linux/init.h> - -#include <asm/system.h> -#include <asm/uaccess.h> -#include <asm/pgalloc.h> -#include <asm/cacheflush.h> -#include <asm/user32.h> -#include <asm/ia32.h> - -#undef WARN_OLD -#undef CORE_DUMP /* probably broken */ - -static int load_aout_binary(struct linux_binprm *, struct pt_regs * regs); -static int load_aout_library(struct file*); - -#ifdef CORE_DUMP -static int aout_core_dump(long signr, struct pt_regs * regs, struct file *file); - -/* - * fill in the user structure for a core dump.. - */ -static void dump_thread32(struct pt_regs * regs, struct user32 * dump) -{ - u32 fs,gs; - -/* changed the size calculations - should hopefully work better. lbt */ - dump->magic = CMAGIC; - dump->start_code = 0; - dump->start_stack = regs->rsp & ~(PAGE_SIZE - 1); - dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT; - dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT; - dump->u_dsize -= dump->u_tsize; - dump->u_ssize = 0; - dump->u_debugreg[0] = current->thread.debugreg0; - dump->u_debugreg[1] = current->thread.debugreg1; - dump->u_debugreg[2] = current->thread.debugreg2; - dump->u_debugreg[3] = current->thread.debugreg3; - dump->u_debugreg[4] = 0; - dump->u_debugreg[5] = 0; - dump->u_debugreg[6] = current->thread.debugreg6; - dump->u_debugreg[7] = current->thread.debugreg7; - - if (dump->start_stack < 0xc0000000) - dump->u_ssize = ((unsigned long) (0xc0000000 - dump->start_stack)) >> PAGE_SHIFT; - - dump->regs.ebx = regs->rbx; - dump->regs.ecx = regs->rcx; - dump->regs.edx = regs->rdx; - dump->regs.esi = regs->rsi; - dump->regs.edi = regs->rdi; - dump->regs.ebp = regs->rbp; - dump->regs.eax = regs->rax; - dump->regs.ds = current->thread.ds; - dump->regs.es = current->thread.es; - asm("movl %%fs,%0" : "=r" (fs)); dump->regs.fs = fs; - asm("movl %%gs,%0" : "=r" (gs)); dump->regs.gs = gs; - dump->regs.orig_eax = regs->orig_rax; - dump->regs.eip = regs->rip; - dump->regs.cs = regs->cs; - dump->regs.eflags = regs->eflags; - dump->regs.esp = regs->rsp; - dump->regs.ss = regs->ss; - -#if 1 /* FIXME */ - dump->u_fpvalid = 0; -#else - dump->u_fpvalid = dump_fpu (regs, &dump->i387); -#endif -} - -#endif - -static struct linux_binfmt aout_format = { - .module = THIS_MODULE, - .load_binary = load_aout_binary, - .load_shlib = load_aout_library, -#ifdef CORE_DUMP - .core_dump = aout_core_dump, -#endif - .min_coredump = PAGE_SIZE -}; - -static void set_brk(unsigned long start, unsigned long end) -{ - start = PAGE_ALIGN(start); - end = PAGE_ALIGN(end); - if (end <= start) - return; - down_write(¤t->mm->mmap_sem); - do_brk(start, end - start); - up_write(¤t->mm->mmap_sem); -} - -#ifdef CORE_DUMP -/* - * These are the only things you should do on a core-file: use only these - * macros to write out all the necessary info. - */ - -static int dump_write(struct file *file, const void *addr, int nr) -{ - return file->f_op->write(file, addr, nr, &file->f_pos) == nr; -} - -#define DUMP_WRITE(addr, nr) \ - if (!dump_write(file, (void *)(addr), (nr))) \ - goto end_coredump; - -#define DUMP_SEEK(offset) \ -if (file->f_op->llseek) { \ - if (file->f_op->llseek(file,(offset),0) != (offset)) \ - goto end_coredump; \ -} else file->f_pos = (offset) - -/* - * Routine writes a core dump image in the current directory. - * Currently only a stub-function. - * - * Note that setuid/setgid files won't make a core-dump if the uid/gid - * changed due to the set[u|g]id. It's enforced by the "current->mm->dumpable" - * field, which also makes sure the core-dumps won't be recursive if the - * dumping of the process results in another error.. - */ - -static int aout_core_dump(long signr, struct pt_regs * regs, struct file *file) -{ - mm_segment_t fs; - int has_dumped = 0; - unsigned long dump_start, dump_size; - struct user32 dump; -# define START_DATA(u) (u.u_tsize << PAGE_SHIFT) -# define START_STACK(u) (u.start_stack) - - fs = get_fs(); - set_fs(KERNEL_DS); - has_dumped = 1; - current->flags |= PF_DUMPCORE; - strncpy(dump.u_comm, current->comm, sizeof(current->comm)); - dump.u_ar0 = (u32)(((unsigned long)(&dump.regs)) - ((unsigned long)(&dump))); - dump.signal = signr; - dump_thread32(regs, &dump); - -/* If the size of the dump file exceeds the rlimit, then see what would happen - if we wrote the stack, but not the data area. */ - if ((dump.u_dsize+dump.u_ssize+1) * PAGE_SIZE > - current->signal->rlim[RLIMIT_CORE].rlim_cur) - dump.u_dsize = 0; - -/* Make sure we have enough room to write the stack and data areas. */ - if ((dump.u_ssize+1) * PAGE_SIZE > - current->signal->rlim[RLIMIT_CORE].rlim_cur) - dump.u_ssize = 0; - -/* make sure we actually have a data and stack area to dump */ - set_fs(USER_DS); - if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_DATA(dump), dump.u_dsize << PAGE_SHIFT)) - dump.u_dsize = 0; - if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_STACK(dump), dump.u_ssize << PAGE_SHIFT)) - dump.u_ssize = 0; - - set_fs(KERNEL_DS); -/* struct user */ - DUMP_WRITE(&dump,sizeof(dump)); -/* Now dump all of the user data. Include malloced stuff as well */ - DUMP_SEEK(PAGE_SIZE); -/* now we start writing out the user space info */ - set_fs(USER_DS); -/* Dump the data area */ - if (dump.u_dsize != 0) { - dump_start = START_DATA(dump); - dump_size = dump.u_dsize << PAGE_SHIFT; - DUMP_WRITE(dump_start,dump_size); - } -/* Now prepare to dump the stack area */ - if (dump.u_ssize != 0) { - dump_start = START_STACK(dump); - dump_size = dump.u_ssize << PAGE_SHIFT; - DUMP_WRITE(dump_start,dump_size); - } -/* Finally dump the task struct. Not be used by gdb, but could be useful */ - set_fs(KERNEL_DS); - DUMP_WRITE(current,sizeof(*current)); -end_coredump: - set_fs(fs); - return has_dumped; -} -#endif - -/* - * create_aout_tables() parses the env- and arg-strings in new user - * memory and creates the pointer tables from them, and puts their - * addresses on the "stack", returning the new stack pointer value. - */ -static u32 __user *create_aout_tables(char __user *p, struct linux_binprm *bprm) -{ - u32 __user *argv; - u32 __user *envp; - u32 __user *sp; - int argc = bprm->argc; - int envc = bprm->envc; - - sp = (u32 __user *) ((-(unsigned long)sizeof(u32)) & (unsigned long) p); - sp -= envc+1; - envp = sp; - sp -= argc+1; - argv = sp; - put_user((unsigned long) envp,--sp); - put_user((unsigned long) argv,--sp); - put_user(argc,--sp); - current->mm->arg_start = (unsigned long) p; - while (argc-->0) { - char c; - put_user((u32)(unsigned long)p,argv++); - do { - get_user(c,p++); - } while (c); - } - put_user(0, argv); - current->mm->arg_end = current->mm->env_start = (unsigned long) p; - while (envc-->0) { - char c; - put_user((u32)(unsigned long)p,envp++); - do { - get_user(c,p++); - } while (c); - } - put_user(0, envp); - current->mm->env_end = (unsigned long) p; - return sp; -} - -/* - * These are the functions used to load a.out style executables and shared - * libraries. There is no binary dependent code anywhere else. - */ - -static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) -{ - struct exec ex; - unsigned long error; - unsigned long fd_offset; - unsigned long rlim; - int retval; - - ex = *((struct exec *) bprm->buf); /* exec-header */ - if ((N_MAGIC(ex) != ZMAGIC && N_MAGIC(ex) != OMAGIC && - N_MAGIC(ex) != QMAGIC && N_MAGIC(ex) != NMAGIC) || - N_TRSIZE(ex) || N_DRSIZE(ex) || - i_size_read(bprm->file->f_path.dentry->d_inode) < ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) { - return -ENOEXEC; - } - - fd_offset = N_TXTOFF(ex); - - /* Check initial limits. This avoids letting people circumvent - * size limits imposed on them by creating programs with large - * arrays in the data or bss. - */ - rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur; - if (rlim >= RLIM_INFINITY) - rlim = ~0; - if (ex.a_data + ex.a_bss > rlim) - return -ENOMEM; - - /* Flush all traces of the currently running executable */ - retval = flush_old_exec(bprm); - if (retval) - return retval; - - regs->cs = __USER32_CS; - regs->r8 = regs->r9 = regs->r10 = regs->r11 = regs->r12 = - regs->r13 = regs->r14 = regs->r15 = 0; - - /* OK, This is the point of no return */ - set_personality(PER_LINUX); - set_thread_flag(TIF_IA32); - clear_thread_flag(TIF_ABI_PENDING); - - current->mm->end_code = ex.a_text + - (current->mm->start_code = N_TXTADDR(ex)); - current->mm->end_data = ex.a_data + - (current->mm->start_data = N_DATADDR(ex)); - current->mm->brk = ex.a_bss + - (current->mm->start_brk = N_BSSADDR(ex)); - current->mm->free_area_cache = TASK_UNMAPPED_BASE; - current->mm->cached_hole_size = 0; - - current->mm->mmap = NULL; - compute_creds(bprm); - current->flags &= ~PF_FORKNOEXEC; - - if (N_MAGIC(ex) == OMAGIC) { - unsigned long text_addr, map_size; - loff_t pos; - - text_addr = N_TXTADDR(ex); - - pos = 32; - map_size = ex.a_text+ex.a_data; - - down_write(¤t->mm->mmap_sem); - error = do_brk(text_addr & PAGE_MASK, map_size); - up_write(¤t->mm->mmap_sem); - - if (error != (text_addr & PAGE_MASK)) { - send_sig(SIGKILL, current, 0); - return error; - } - - error = bprm->file->f_op->read(bprm->file, - (char __user *)text_addr, - ex.a_text+ex.a_data, &pos); - if ((signed long)error < 0) { - send_sig(SIGKILL, current, 0); - return error; - } - - flush_icache_range(text_addr, text_addr+ex.a_text+ex.a_data); - } else { -#ifdef WARN_OLD - static unsigned long error_time, error_time2; - if ((ex.a_text & 0xfff || ex.a_data & 0xfff) && - (N_MAGIC(ex) != NMAGIC) && (jiffies-error_time2) > 5*HZ) - { - printk(KERN_NOTICE "executable not page aligned\n"); - error_time2 = jiffies; - } - - if ((fd_offset & ~PAGE_MASK) != 0 && - (jiffies-error_time) > 5*HZ) - { - printk(KERN_WARNING - "fd_offset is not page aligned. Please convert program: %s\n", - bprm->file->f_path.dentry->d_name.name); - error_time = jiffies; - } -#endif - - if (!bprm->file->f_op->mmap||((fd_offset & ~PAGE_MASK) != 0)) { - loff_t pos = fd_offset; - down_write(¤t->mm->mmap_sem); - do_brk(N_TXTADDR(ex), ex.a_text+ex.a_data); - up_write(¤t->mm->mmap_sem); - bprm->file->f_op->read(bprm->file, - (char __user *)N_TXTADDR(ex), - ex.a_text+ex.a_data, &pos); - flush_icache_range((unsigned long) N_TXTADDR(ex), - (unsigned long) N_TXTADDR(ex) + - ex.a_text+ex.a_data); - goto beyond_if; - } - - down_write(¤t->mm->mmap_sem); - error = do_mmap(bprm->file, N_TXTADDR(ex), ex.a_text, - PROT_READ | PROT_EXEC, - MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE | MAP_32BIT, - fd_offset); - up_write(¤t->mm->mmap_sem); - - if (error != N_TXTADDR(ex)) { - send_sig(SIGKILL, current, 0); - return error; - } - - down_write(¤t->mm->mmap_sem); - error = do_mmap(bprm->file, N_DATADDR(ex), ex.a_data, - PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE | MAP_32BIT, - fd_offset + ex.a_text); - up_write(¤t->mm->mmap_sem); - if (error != N_DATADDR(ex)) { - send_sig(SIGKILL, current, 0); - return error; - } - } -beyond_if: - set_binfmt(&aout_format); - - set_brk(current->mm->start_brk, current->mm->brk); - - retval = setup_arg_pages(bprm, IA32_STACK_TOP, EXSTACK_DEFAULT); - if (retval < 0) { - /* Someone check-me: is this error path enough? */ - send_sig(SIGKILL, current, 0); - return retval; - } - - current->mm->start_stack = - (unsigned long)create_aout_tables((char __user *)bprm->p, bprm); - /* start thread */ - asm volatile("movl %0,%%fs" :: "r" (0)); \ - asm volatile("movl %0,%%es; movl %0,%%ds": :"r" (__USER32_DS)); - load_gs_index(0); - (regs)->rip = ex.a_entry; - (regs)->rsp = current->mm->start_stack; - (regs)->eflags = 0x200; - (regs)->cs = __USER32_CS; - (regs)->ss = __USER32_DS; - set_fs(USER_DS); - if (unlikely(current->ptrace & PT_PTRACED)) { - if (current->ptrace & PT_TRACE_EXEC) - ptrace_notify ((PTRACE_EVENT_EXEC << 8) | SIGTRAP); - else - send_sig(SIGTRAP, current, 0); - } - return 0; -} - -static int load_aout_library(struct file *file) -{ - struct inode * inode; - unsigned long bss, start_addr, len; - unsigned long error; - int retval; - struct exec ex; - - inode = file->f_path.dentry->d_inode; - - retval = -ENOEXEC; - error = kernel_read(file, 0, (char *) &ex, sizeof(ex)); - if (error != sizeof(ex)) - goto out; - - /* We come in here for the regular a.out style of shared libraries */ - if ((N_MAGIC(ex) != ZMAGIC && N_MAGIC(ex) != QMAGIC) || N_TRSIZE(ex) || - N_DRSIZE(ex) || ((ex.a_entry & 0xfff) && N_MAGIC(ex) == ZMAGIC) || - i_size_read(inode) < ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) { - goto out; - } - - if (N_FLAGS(ex)) - goto out; - - /* For QMAGIC, the starting address is 0x20 into the page. We mask - this off to get the starting address for the page */ - - start_addr = ex.a_entry & 0xfffff000; - - if ((N_TXTOFF(ex) & ~PAGE_MASK) != 0) { - loff_t pos = N_TXTOFF(ex); - -#ifdef WARN_OLD - static unsigned long error_time; - if ((jiffies-error_time) > 5*HZ) - { - printk(KERN_WARNING - "N_TXTOFF is not page aligned. Please convert library: %s\n", - file->f_path.dentry->d_name.name); - error_time = jiffies; - } -#endif - down_write(¤t->mm->mmap_sem); - do_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss); - up_write(¤t->mm->mmap_sem); - - file->f_op->read(file, (char __user *)start_addr, - ex.a_text + ex.a_data, &pos); - flush_icache_range((unsigned long) start_addr, - (unsigned long) start_addr + ex.a_text + ex.a_data); - - retval = 0; - goto out; - } - /* Now use mmap to map the library into memory. */ - down_write(¤t->mm->mmap_sem); - error = do_mmap(file, start_addr, ex.a_text + ex.a_data, - PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_32BIT, - N_TXTOFF(ex)); - up_write(¤t->mm->mmap_sem); - retval = error; - if (error != start_addr) - goto out; - - len = PAGE_ALIGN(ex.a_text + ex.a_data); - bss = ex.a_text + ex.a_data + ex.a_bss; - if (bss > len) { - down_write(¤t->mm->mmap_sem); - error = do_brk(start_addr + len, bss - len); - up_write(¤t->mm->mmap_sem); - retval = error; - if (error != start_addr + len) - goto out; - } - retval = 0; -out: - return retval; -} - -static int __init init_aout_binfmt(void) -{ - return register_binfmt(&aout_format); -} - -static void __exit exit_aout_binfmt(void) -{ - unregister_binfmt(&aout_format); -} - -module_init(init_aout_binfmt); -module_exit(exit_aout_binfmt); -MODULE_LICENSE("GPL"); diff --git a/arch/x86_64/ia32/ia32_binfmt.c b/arch/x86_64/ia32/ia32_binfmt.c deleted file mode 100644 index dffd2ac7274..00000000000 --- a/arch/x86_64/ia32/ia32_binfmt.c +++ /dev/null @@ -1,320 +0,0 @@ -/* - * Written 2000,2002 by Andi Kleen. - * - * Loosely based on the sparc64 and IA64 32bit emulation loaders. - * This tricks binfmt_elf.c into loading 32bit binaries using lots - * of ugly preprocessor tricks. Talk about very very poor man's inheritance. - */ -#define __ASM_X86_64_ELF_H 1 - -#undef ELF_CLASS -#define ELF_CLASS ELFCLASS32 - -#include <linux/types.h> -#include <linux/stddef.h> -#include <linux/rwsem.h> -#include <linux/sched.h> -#include <linux/compat.h> -#include <linux/string.h> -#include <linux/binfmts.h> -#include <linux/mm.h> -#include <linux/security.h> - -#include <asm/segment.h> -#include <asm/ptrace.h> -#include <asm/processor.h> -#include <asm/user32.h> -#include <asm/sigcontext32.h> -#include <asm/fpu32.h> -#include <asm/i387.h> -#include <asm/uaccess.h> -#include <asm/ia32.h> -#include <asm/vsyscall32.h> - -#define ELF_NAME "elf/i386" - -#define AT_SYSINFO 32 -#define AT_SYSINFO_EHDR 33 - -int sysctl_vsyscall32 = 1; - -#undef ARCH_DLINFO -#define ARCH_DLINFO do { \ - if (sysctl_vsyscall32) { \ - current->mm->context.vdso = (void *)VSYSCALL32_BASE; \ - NEW_AUX_ENT(AT_SYSINFO, (u32)(u64)VSYSCALL32_VSYSCALL); \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, VSYSCALL32_BASE); \ - } \ -} while(0) - -struct file; -struct elf_phdr; - -#define IA32_EMULATOR 1 - -#define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000) - -#undef ELF_ARCH -#define ELF_ARCH EM_386 - -#define ELF_DATA ELFDATA2LSB - -#define USE_ELF_CORE_DUMP 1 - -/* Override elfcore.h */ -#define _LINUX_ELFCORE_H 1 -typedef unsigned int elf_greg_t; - -#define ELF_NGREG (sizeof (struct user_regs_struct32) / sizeof(elf_greg_t)) -typedef elf_greg_t elf_gregset_t[ELF_NGREG]; - -struct elf_siginfo -{ - int si_signo; /* signal number */ - int si_code; /* extra code */ - int si_errno; /* errno */ -}; - -#define jiffies_to_timeval(a,b) do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; }while(0) - -struct elf_prstatus -{ - struct elf_siginfo pr_info; /* Info associated with signal */ - short pr_cursig; /* Current signal */ - unsigned int pr_sigpend; /* Set of pending signals */ - unsigned int pr_sighold; /* Set of held signals */ - pid_t pr_pid; - pid_t pr_ppid; - pid_t pr_pgrp; - pid_t pr_sid; - struct compat_timeval pr_utime; /* User time */ - struct compat_timeval pr_stime; /* System time */ - struct compat_timeval pr_cutime; /* Cumulative user time */ - struct compat_timeval pr_cstime; /* Cumulative system time */ - elf_gregset_t pr_reg; /* GP registers */ - int pr_fpvalid; /* True if math co-processor being used. */ -}; - -#define ELF_PRARGSZ (80) /* Number of chars for args */ - -struct elf_prpsinfo -{ - char pr_state; /* numeric process state */ - char pr_sname; /* char for pr_state */ - char pr_zomb; /* zombie */ - char pr_nice; /* nice val */ - unsigned int pr_flag; /* flags */ - __u16 pr_uid; - __u16 pr_gid; - pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; - /* Lots missing */ - char pr_fname[16]; /* filename of executable */ - char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ -}; - -#define __STR(x) #x -#define STR(x) __STR(x) - -#define _GET_SEG(x) \ - ({ __u32 seg; asm("movl %%" STR(x) ",%0" : "=r"(seg)); seg; }) - -/* Assumes current==process to be dumped */ -#define ELF_CORE_COPY_REGS(pr_reg, regs) \ - pr_reg[0] = regs->rbx; \ - pr_reg[1] = regs->rcx; \ - pr_reg[2] = regs->rdx; \ - pr_reg[3] = regs->rsi; \ - pr_reg[4] = regs->rdi; \ - pr_reg[5] = regs->rbp; \ - pr_reg[6] = regs->rax; \ - pr_reg[7] = _GET_SEG(ds); \ - pr_reg[8] = _GET_SEG(es); \ - pr_reg[9] = _GET_SEG(fs); \ - pr_reg[10] = _GET_SEG(gs); \ - pr_reg[11] = regs->orig_rax; \ - pr_reg[12] = regs->rip; \ - pr_reg[13] = regs->cs; \ - pr_reg[14] = regs->eflags; \ - pr_reg[15] = regs->rsp; \ - pr_reg[16] = regs->ss; - -#define user user32 - -#undef elf_read_implies_exec -#define elf_read_implies_exec(ex, executable_stack) (executable_stack != EXSTACK_DISABLE_X) -//#include <asm/ia32.h> -#include <linux/elf.h> - -typedef struct user_i387_ia32_struct elf_fpregset_t; -typedef struct user32_fxsr_struct elf_fpxregset_t; - - -static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs) -{ - ELF_CORE_COPY_REGS((*elfregs), regs) -} - -static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs) -{ - struct pt_regs *pp = task_pt_regs(t); - ELF_CORE_COPY_REGS((*elfregs), pp); - /* fix wrong segments */ - (*elfregs)[7] = t->thread.ds; - (*elfregs)[9] = t->thread.fsindex; - (*elfregs)[10] = t->thread.gsindex; - (*elfregs)[8] = t->thread.es; - return 1; -} - -static inline int -elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpregset_t *fpu) -{ - struct _fpstate_ia32 *fpstate = (void*)fpu; - mm_segment_t oldfs = get_fs(); - - if (!tsk_used_math(tsk)) - return 0; - if (!regs) - regs = task_pt_regs(tsk); - if (tsk == current) - unlazy_fpu(tsk); - set_fs(KERNEL_DS); - save_i387_ia32(tsk, fpstate, regs, 1); - /* Correct for i386 bug. It puts the fop into the upper 16bits of - the tag word (like FXSAVE), not into the fcs*/ - fpstate->cssel |= fpstate->tag & 0xffff0000; - set_fs(oldfs); - return 1; -} - -#define ELF_CORE_COPY_XFPREGS 1 -static inline int -elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu) -{ - struct pt_regs *regs = task_pt_regs(t); - if (!tsk_used_math(t)) - return 0; - if (t == current) - unlazy_fpu(t); - memcpy(xfpu, &t->thread.i387.fxsave, sizeof(elf_fpxregset_t)); - xfpu->fcs = regs->cs; - xfpu->fos = t->thread.ds; /* right? */ - return 1; -} - -#undef elf_check_arch -#define elf_check_arch(x) \ - ((x)->e_machine == EM_386) - -extern int force_personality32; - -#define ELF_EXEC_PAGESIZE PAGE_SIZE -#define ELF_HWCAP (boot_cpu_data.x86_capability[0]) -#define ELF_PLATFORM ("i686") -#define SET_PERSONALITY(ex, ibcs2) \ -do { \ - unsigned long new_flags = 0; \ - if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \ - new_flags = _TIF_IA32; \ - if ((current_thread_info()->flags & _TIF_IA32) \ - != new_flags) \ - set_thread_flag(TIF_ABI_PENDING); \ - else \ - clear_thread_flag(TIF_ABI_PENDING); \ - /* XXX This overwrites the user set personality */ \ - current->personality |= force_personality32; \ -} while (0) - -/* Override some function names */ -#define elf_format elf32_format - -#define init_elf_binfmt init_elf32_binfmt -#define exit_elf_binfmt exit_elf32_binfmt - -#define load_elf_binary load_elf32_binary - -#define ELF_PLAT_INIT(r, load_addr) elf32_init(r) - -#undef start_thread -#define start_thread(regs,new_rip,new_rsp) do { \ - asm volatile("movl %0,%%fs" :: "r" (0)); \ - asm volatile("movl %0,%%es; movl %0,%%ds": :"r" (__USER32_DS)); \ - load_gs_index(0); \ - (regs)->rip = (new_rip); \ - (regs)->rsp = (new_rsp); \ - (regs)->eflags = 0x200; \ - (regs)->cs = __USER32_CS; \ - (regs)->ss = __USER32_DS; \ - set_fs(USER_DS); \ -} while(0) - - -#include <linux/module.h> - -MODULE_DESCRIPTION("Binary format loader for compatibility with IA32 ELF binaries."); -MODULE_AUTHOR("Eric Youngdale, Andi Kleen"); - -#undef MODULE_DESCRIPTION -#undef MODULE_AUTHOR - -static void elf32_init(struct pt_regs *); - -#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 -#define arch_setup_additional_pages syscall32_setup_pages -extern int syscall32_setup_pages(struct linux_binprm *, int exstack); - -#include "../../../fs/binfmt_elf.c" - -static void elf32_init(struct pt_regs *regs) -{ - struct task_struct *me = current; - regs->rdi = 0; - regs->rsi = 0; - regs->rdx = 0; - regs->rcx = 0; - regs->rax = 0; - regs->rbx = 0; - regs->rbp = 0; - regs->r8 = regs->r9 = regs->r10 = regs->r11 = regs->r12 = - regs->r13 = regs->r14 = regs->r15 = 0; - me->thread.fs = 0; - me->thread.gs = 0; - me->thread.fsindex = 0; - me->thread.gsindex = 0; - me->thread.ds = __USER_DS; - me->thread.es = __USER_DS; -} - -#ifdef CONFIG_SYSCTL -/* Register vsyscall32 into the ABI table */ -#include <linux/sysctl.h> - -static ctl_table abi_table2[] = { - { - .ctl_name = 99, - .procname = "vsyscall32", - .data = &sysctl_vsyscall32, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec - }, - {} -}; - -static ctl_table abi_root_table2[] = { - { - .ctl_name = CTL_ABI, - .procname = "abi", - .mode = 0555, - .child = abi_table2 - }, - {} -}; - -static __init int ia32_binfmt_init(void) -{ - register_sysctl_table(abi_root_table2); - return 0; -} -__initcall(ia32_binfmt_init); -#endif diff --git a/arch/x86_64/ia32/ia32_signal.c b/arch/x86_64/ia32/ia32_signal.c deleted file mode 100644 index 6ea19c25f90..00000000000 --- a/arch/x86_64/ia32/ia32_signal.c +++ /dev/null @@ -1,617 +0,0 @@ -/* - * linux/arch/x86_64/ia32/ia32_signal.c - * - * Copyright (C) 1991, 1992 Linus Torvalds - * - * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson - * 2000-06-20 Pentium III FXSR, SSE support by Gareth Hughes - * 2000-12-* x86-64 compatibility mode signal handling by Andi Kleen - */ - -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/errno.h> -#include <linux/wait.h> -#include <linux/ptrace.h> -#include <linux/unistd.h> -#include <linux/stddef.h> -#include <linux/personality.h> -#include <linux/compat.h> -#include <linux/binfmts.h> -#include <asm/ucontext.h> -#include <asm/uaccess.h> -#include <asm/i387.h> -#include <asm/ia32.h> -#include <asm/ptrace.h> -#include <asm/ia32_unistd.h> -#include <asm/user32.h> -#include <asm/sigcontext32.h> -#include <asm/fpu32.h> -#include <asm/proto.h> -#include <asm/vsyscall32.h> - -#define DEBUG_SIG 0 - -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) - -asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset); -void signal_fault(struct pt_regs *regs, void __user *frame, char *where); - -int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from) -{ - int err; - if (!access_ok (VERIFY_WRITE, to, sizeof(compat_siginfo_t))) - return -EFAULT; - - /* If you change siginfo_t structure, please make sure that - this code is fixed accordingly. - It should never copy any pad contained in the structure - to avoid security leaks, but must copy the generic - 3 ints plus the relevant union member. */ - err = __put_user(from->si_signo, &to->si_signo); - err |= __put_user(from->si_errno, &to->si_errno); - err |= __put_user((short)from->si_code, &to->si_code); - - if (from->si_code < 0) { - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - err |= __put_user(ptr_to_compat(from->si_ptr), &to->si_ptr); - } else { - /* First 32bits of unions are always present: - * si_pid === si_band === si_tid === si_addr(LS half) */ - err |= __put_user(from->_sifields._pad[0], &to->_sifields._pad[0]); - switch (from->si_code >> 16) { - case __SI_FAULT >> 16: - break; - case __SI_CHLD >> 16: - err |= __put_user(from->si_utime, &to->si_utime); - err |= __put_user(from->si_stime, &to->si_stime); - err |= __put_user(from->si_status, &to->si_status); - /* FALL THROUGH */ - default: - case __SI_KILL >> 16: - err |= __put_user(from->si_uid, &to->si_uid); - break; - case __SI_POLL >> 16: - err |= __put_user(from->si_fd, &to->si_fd); - break; - case __SI_TIMER >> 16: - err |= __put_user(from->si_overrun, &to->si_overrun); - err |= __put_user(ptr_to_compat(from->si_ptr), - &to->si_ptr); - break; - case __SI_RT >> 16: /* This is not generated by the kernel as of now. */ - case __SI_MESGQ >> 16: - err |= __put_user(from->si_uid, &to->si_uid); - err |= __put_user(from->si_int, &to->si_int); - break; - } - } - return err; -} - -int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) -{ - int err; - u32 ptr32; - if (!access_ok (VERIFY_READ, from, sizeof(compat_siginfo_t))) - return -EFAULT; - - err = __get_user(to->si_signo, &from->si_signo); - err |= __get_user(to->si_errno, &from->si_errno); - err |= __get_user(to->si_code, &from->si_code); - - err |= __get_user(to->si_pid, &from->si_pid); - err |= __get_user(to->si_uid, &from->si_uid); - err |= __get_user(ptr32, &from->si_ptr); - to->si_ptr = compat_ptr(ptr32); - - return err; -} - -asmlinkage long -sys32_sigsuspend(int history0, int history1, old_sigset_t mask) -{ - mask &= _BLOCKABLE; - spin_lock_irq(¤t->sighand->siglock); - current->saved_sigmask = current->blocked; - siginitset(¤t->blocked, mask); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - current->state = TASK_INTERRUPTIBLE; - schedule(); - set_thread_flag(TIF_RESTORE_SIGMASK); - return -ERESTARTNOHAND; -} - -asmlinkage long -sys32_sigaltstack(const stack_ia32_t __user *uss_ptr, - stack_ia32_t __user *uoss_ptr, - struct pt_regs *regs) -{ - stack_t uss,uoss; - int ret; - mm_segment_t seg; - if (uss_ptr) { - u32 ptr; - memset(&uss,0,sizeof(stack_t)); - if (!access_ok(VERIFY_READ,uss_ptr,sizeof(stack_ia32_t)) || - __get_user(ptr, &uss_ptr->ss_sp) || - __get_user(uss.ss_flags, &uss_ptr->ss_flags) || - __get_user(uss.ss_size, &uss_ptr->ss_size)) - return -EFAULT; - uss.ss_sp = compat_ptr(ptr); - } - seg = get_fs(); - set_fs(KERNEL_DS); - ret = do_sigaltstack(uss_ptr ? &uss : NULL, &uoss, regs->rsp); - set_fs(seg); - if (ret >= 0 && uoss_ptr) { - if (!access_ok(VERIFY_WRITE,uoss_ptr,sizeof(stack_ia32_t)) || - __put_user(ptr_to_compat(uoss.ss_sp), &uoss_ptr->ss_sp) || - __put_user(uoss.ss_flags, &uoss_ptr->ss_flags) || - __put_user(uoss.ss_size, &uoss_ptr->ss_size)) - ret = -EFAULT; - } - return ret; -} - -/* - * Do a signal return; undo the signal stack. - */ - -struct sigframe -{ - u32 pretcode; - int sig; - struct sigcontext_ia32 sc; - struct _fpstate_ia32 fpstate; - unsigned int extramask[_COMPAT_NSIG_WORDS-1]; - char retcode[8]; -}; - -struct rt_sigframe -{ - u32 pretcode; - int sig; - u32 pinfo; - u32 puc; - compat_siginfo_t info; - struct ucontext_ia32 uc; - struct _fpstate_ia32 fpstate; - char retcode[8]; -}; - -static int -ia32_restore_sigcontext(struct pt_regs *regs, struct sigcontext_ia32 __user *sc, unsigned int *peax) -{ - unsigned int err = 0; - - /* Always make any pending restarted system calls return -EINTR */ - current_thread_info()->restart_block.fn = do_no_restart_syscall; - -#if DEBUG_SIG - printk("SIG restore_sigcontext: sc=%p err(%x) eip(%x) cs(%x) flg(%x)\n", - sc, sc->err, sc->eip, sc->cs, sc->eflags); -#endif -#define COPY(x) { \ - unsigned int reg; \ - err |= __get_user(reg, &sc->e ##x); \ - regs->r ## x = reg; \ -} - -#define RELOAD_SEG(seg,mask) \ - { unsigned int cur; \ - unsigned short pre; \ - err |= __get_user(pre, &sc->seg); \ - asm volatile("movl %%" #seg ",%0" : "=r" (cur)); \ - pre |= mask; \ - if (pre != cur) loadsegment(seg,pre); } - - /* Reload fs and gs if they have changed in the signal handler. - This does not handle long fs/gs base changes in the handler, but - does not clobber them at least in the normal case. */ - - { - unsigned gs, oldgs; - err |= __get_user(gs, &sc->gs); - gs |= 3; - asm("movl %%gs,%0" : "=r" (oldgs)); - if (gs != oldgs) - load_gs_index(gs); - } - RELOAD_SEG(fs,3); - RELOAD_SEG(ds,3); - RELOAD_SEG(es,3); - - COPY(di); COPY(si); COPY(bp); COPY(sp); COPY(bx); - COPY(dx); COPY(cx); COPY(ip); - /* Don't touch extended registers */ - - err |= __get_user(regs->cs, &sc->cs); - regs->cs |= 3; - err |= __get_user(regs->ss, &sc->ss); - regs->ss |= 3; - - { - unsigned int tmpflags; - err |= __get_user(tmpflags, &sc->eflags); - regs->eflags = (regs->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); - regs->orig_rax = -1; /* disable syscall checks */ - } - - { - u32 tmp; - struct _fpstate_ia32 __user * buf; - err |= __get_user(tmp, &sc->fpstate); - buf = compat_ptr(tmp); - if (buf) { - if (!access_ok(VERIFY_READ, buf, sizeof(*buf))) - goto badframe; - err |= restore_i387_ia32(current, buf, 0); - } else { - struct task_struct *me = current; - if (used_math()) { - clear_fpu(me); - clear_used_math(); - } - } - } - - { - u32 tmp; - err |= __get_user(tmp, &sc->eax); - *peax = tmp; - } - return err; - -badframe: - return 1; -} - -asmlinkage long sys32_sigreturn(struct pt_regs *regs) -{ - struct sigframe __user *frame = (struct sigframe __user *)(regs->rsp-8); - sigset_t set; - unsigned int eax; - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__get_user(set.sig[0], &frame->sc.oldmask) - || (_COMPAT_NSIG_WORDS > 1 - && __copy_from_user((((char *) &set.sig) + 4), &frame->extramask, - sizeof(frame->extramask)))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - if (ia32_restore_sigcontext(regs, &frame->sc, &eax)) - goto badframe; - return eax; - -badframe: - signal_fault(regs, frame, "32bit sigreturn"); - return 0; -} - -asmlinkage long sys32_rt_sigreturn(struct pt_regs *regs) -{ - struct rt_sigframe __user *frame; - sigset_t set; - unsigned int eax; - struct pt_regs tregs; - - frame = (struct rt_sigframe __user *)(regs->rsp - 4); - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - if (ia32_restore_sigcontext(regs, &frame->uc.uc_mcontext, &eax)) - goto badframe; - - tregs = *regs; - if (sys32_sigaltstack(&frame->uc.uc_stack, NULL, &tregs) == -EFAULT) - goto badframe; - - return eax; - -badframe: - signal_fault(regs,frame,"32bit rt sigreturn"); - return 0; -} - -/* - * Set up a signal frame. - */ - -static int -ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc, struct _fpstate_ia32 __user *fpstate, - struct pt_regs *regs, unsigned int mask) -{ - int tmp, err = 0; - - tmp = 0; - __asm__("movl %%gs,%0" : "=r"(tmp): "0"(tmp)); - err |= __put_user(tmp, (unsigned int __user *)&sc->gs); - __asm__("movl %%fs,%0" : "=r"(tmp): "0"(tmp)); - err |= __put_user(tmp, (unsigned int __user *)&sc->fs); - __asm__("movl %%ds,%0" : "=r"(tmp): "0"(tmp)); - err |= __put_user(tmp, (unsigned int __user *)&sc->ds); - __asm__("movl %%es,%0" : "=r"(tmp): "0"(tmp)); - err |= __put_user(tmp, (unsigned int __user *)&sc->es); - - err |= __put_user((u32)regs->rdi, &sc->edi); - err |= __put_user((u32)regs->rsi, &sc->esi); - err |= __put_user((u32)regs->rbp, &sc->ebp); - err |= __put_user((u32)regs->rsp, &sc->esp); - err |= __put_user((u32)regs->rbx, &sc->ebx); - err |= __put_user((u32)regs->rdx, &sc->edx); - err |= __put_user((u32)regs->rcx, &sc->ecx); - err |= __put_user((u32)regs->rax, &sc->eax); - err |= __put_user((u32)regs->cs, &sc->cs); - err |= __put_user((u32)regs->ss, &sc->ss); - err |= __put_user(current->thread.trap_no, &sc->trapno); - err |= __put_user(current->thread.error_code, &sc->err); - err |= __put_user((u32)regs->rip, &sc->eip); - err |= __put_user((u32)regs->eflags, &sc->eflags); - err |= __put_user((u32)regs->rsp, &sc->esp_at_signal); - - tmp = save_i387_ia32(current, fpstate, regs, 0); - if (tmp < 0) - err = -EFAULT; - else { - clear_used_math(); - stts(); - err |= __put_user(ptr_to_compat(tmp ? fpstate : NULL), - &sc->fpstate); - } - - /* non-iBCS2 extensions.. */ - err |= __put_user(mask, &sc->oldmask); - err |= __put_user(current->thread.cr2, &sc->cr2); - - return err; -} - -/* - * Determine which stack to use.. - */ -static void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) -{ - unsigned long rsp; - - /* Default to using normal stack */ - rsp = regs->rsp; - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (sas_ss_flags(rsp) == 0) - rsp = current->sas_ss_sp + current->sas_ss_size; - } - - /* This is the legacy signal stack switching. */ - else if ((regs->ss & 0xffff) != __USER_DS && - !(ka->sa.sa_flags & SA_RESTORER) && - ka->sa.sa_restorer) { - rsp = (unsigned long) ka->sa.sa_restorer; - } - - rsp -= frame_size; - /* Align the stack pointer according to the i386 ABI, - * i.e. so that on function entry ((sp + 4) & 15) == 0. */ - rsp = ((rsp + 4) & -16ul) - 4; - return (void __user *) rsp; -} - -int ia32_setup_frame(int sig, struct k_sigaction *ka, - compat_sigset_t *set, struct pt_regs * regs) -{ - struct sigframe __user *frame; - int err = 0; - - frame = get_sigframe(ka, regs, sizeof(*frame)); - - if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; - - err |= __put_user(sig, &frame->sig); - if (err) - goto give_sigsegv; - - err |= ia32_setup_sigcontext(&frame->sc, &frame->fpstate, regs, - set->sig[0]); - if (err) - goto give_sigsegv; - - if (_COMPAT_NSIG_WORDS > 1) { - err |= __copy_to_user(frame->extramask, &set->sig[1], - sizeof(frame->extramask)); - } - if (err) - goto give_sigsegv; - - /* Return stub is in 32bit vsyscall page */ - { - void __user *restorer; - if (current->binfmt->hasvdso) - restorer = VSYSCALL32_SIGRETURN; - else - restorer = (void *)&frame->retcode; - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ka->sa.sa_restorer; - err |= __put_user(ptr_to_compat(restorer), &frame->pretcode); - } - /* These are actually not used anymore, but left because some - gdb versions depend on them as a marker. */ - { - /* copy_to_user optimizes that into a single 8 byte store */ - static const struct { - u16 poplmovl; - u32 val; - u16 int80; - u16 pad; - } __attribute__((packed)) code = { - 0xb858, /* popl %eax ; movl $...,%eax */ - __NR_ia32_sigreturn, - 0x80cd, /* int $0x80 */ - 0, - }; - err |= __copy_to_user(frame->retcode, &code, 8); - } - if (err) - goto give_sigsegv; - - /* Set up registers for signal handler */ - regs->rsp = (unsigned long) frame; - regs->rip = (unsigned long) ka->sa.sa_handler; - - /* Make -mregparm=3 work */ - regs->rax = sig; - regs->rdx = 0; - regs->rcx = 0; - - asm volatile("movl %0,%%ds" :: "r" (__USER32_DS)); - asm volatile("movl %0,%%es" :: "r" (__USER32_DS)); - - regs->cs = __USER32_CS; - regs->ss = __USER32_DS; - - set_fs(USER_DS); - regs->eflags &= ~TF_MASK; - if (test_thread_flag(TIF_SINGLESTEP)) - ptrace_notify(SIGTRAP); - -#if DEBUG_SIG - printk("SIG deliver (%s:%d): sp=%p pc=%lx ra=%u\n", - current->comm, current->pid, frame, regs->rip, frame->pretcode); -#endif - - return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; -} - -int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - compat_sigset_t *set, struct pt_regs * regs) -{ - struct rt_sigframe __user *frame; - int err = 0; - - frame = get_sigframe(ka, regs, sizeof(*frame)); - - if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; - - { - struct exec_domain *ed = current_thread_info()->exec_domain; - err |= __put_user((ed - && ed->signal_invmap - && sig < 32 - ? ed->signal_invmap[sig] - : sig), - &frame->sig); - } - err |= __put_user(ptr_to_compat(&frame->info), &frame->pinfo); - err |= __put_user(ptr_to_compat(&frame->uc), &frame->puc); - err |= copy_siginfo_to_user32(&frame->info, info); - if (err) - goto give_sigsegv; - - /* Create the ucontext. */ - err |= __put_user(0, &frame->uc.uc_flags); - err |= __put_user(0, &frame->uc.uc_link); - err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(regs->rsp), - &frame->uc.uc_stack.ss_flags); - err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); - err |= ia32_setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate, - regs, set->sig[0]); - err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); - if (err) - goto give_sigsegv; - - - { - void __user *restorer = VSYSCALL32_RTSIGRETURN; - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ka->sa.sa_restorer; - err |= __put_user(ptr_to_compat(restorer), &frame->pretcode); - } - - /* This is movl $,%eax ; int $0x80 */ - /* Not actually used anymore, but left because some gdb versions - need it. */ - { - /* __copy_to_user optimizes that into a single 8 byte store */ - static const struct { - u8 movl; - u32 val; - u16 int80; - u16 pad; - u8 pad2; - } __attribute__((packed)) code = { - 0xb8, - __NR_ia32_rt_sigreturn, - 0x80cd, - 0, - }; - err |= __copy_to_user(frame->retcode, &code, 8); - } - if (err) - goto give_sigsegv; - - /* Set up registers for signal handler */ - regs->rsp = (unsigned long) frame; - regs->rip = (unsigned long) ka->sa.sa_handler; - - /* Make -mregparm=3 work */ - regs->rax = sig; - regs->rdx = (unsigned long) &frame->info; - regs->rcx = (unsigned long) &frame->uc; - - /* Make -mregparm=3 work */ - regs->rax = sig; - regs->rdx = (unsigned long) &frame->info; - regs->rcx = (unsigned long) &frame->uc; - - asm volatile("movl %0,%%ds" :: "r" (__USER32_DS)); - asm volatile("movl %0,%%es" :: "r" (__USER32_DS)); - - regs->cs = __USER32_CS; - regs->ss = __USER32_DS; - - set_fs(USER_DS); - regs->eflags &= ~TF_MASK; - if (test_thread_flag(TIF_SINGLESTEP)) - ptrace_notify(SIGTRAP); - -#if DEBUG_SIG - printk("SIG deliver (%s:%d): sp=%p pc=%lx ra=%u\n", - current->comm, current->pid, frame, regs->rip, frame->pretcode); -#endif - - return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; -} diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S deleted file mode 100644 index 18b23181090..00000000000 --- a/arch/x86_64/ia32/ia32entry.S +++ /dev/null @@ -1,736 +0,0 @@ -/* - * Compatibility mode system call entry point for x86-64. - * - * Copyright 2000-2002 Andi Kleen, SuSE Labs. - */ - -#include <asm/dwarf2.h> -#include <asm/calling.h> -#include <asm/asm-offsets.h> -#include <asm/current.h> -#include <asm/errno.h> -#include <asm/ia32_unistd.h> -#include <asm/thread_info.h> -#include <asm/segment.h> -#include <asm/vsyscall32.h> -#include <asm/irqflags.h> -#include <linux/linkage.h> - -#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8) - - .macro IA32_ARG_FIXUP noebp=0 - movl %edi,%r8d - .if \noebp - .else - movl %ebp,%r9d - .endif - xchg %ecx,%esi - movl %ebx,%edi - movl %edx,%edx /* zero extension */ - .endm - - /* clobbers %eax */ - .macro CLEAR_RREGS - xorl %eax,%eax - movq %rax,R11(%rsp) - movq %rax,R10(%rsp) - movq %rax,R9(%rsp) - movq %rax,R8(%rsp) - .endm - - .macro LOAD_ARGS32 offset - movl \offset(%rsp),%r11d - movl \offset+8(%rsp),%r10d - movl \offset+16(%rsp),%r9d - movl \offset+24(%rsp),%r8d - movl \offset+40(%rsp),%ecx - movl \offset+48(%rsp),%edx - movl \offset+56(%rsp),%esi - movl \offset+64(%rsp),%edi - movl \offset+72(%rsp),%eax - .endm - - .macro CFI_STARTPROC32 simple - CFI_STARTPROC \simple - CFI_UNDEFINED r8 - CFI_UNDEFINED r9 - CFI_UNDEFINED r10 - CFI_UNDEFINED r11 - CFI_UNDEFINED r12 - CFI_UNDEFINED r13 - CFI_UNDEFINED r14 - CFI_UNDEFINED r15 - .endm - -/* - * 32bit SYSENTER instruction entry. - * - * Arguments: - * %eax System call number. - * %ebx Arg1 - * %ecx Arg2 - * %edx Arg3 - * %esi Arg4 - * %edi Arg5 - * %ebp user stack - * 0(%ebp) Arg6 - * - * Interrupts off. - * - * This is purely a fast path. For anything complicated we use the int 0x80 - * path below. Set up a complete hardware stack frame to share code - * with the int 0x80 path. - */ -ENTRY(ia32_sysenter_target) - CFI_STARTPROC32 simple - CFI_SIGNAL_FRAME - CFI_DEF_CFA rsp,0 - CFI_REGISTER rsp,rbp - swapgs - movq %gs:pda_kernelstack, %rsp - addq $(PDA_STACKOFFSET),%rsp - /* - * No need to follow this irqs on/off section: the syscall - * disabled irqs, here we enable it straight after entry: - */ - sti - movl %ebp,%ebp /* zero extension */ - pushq $__USER32_DS - CFI_ADJUST_CFA_OFFSET 8 - /*CFI_REL_OFFSET ss,0*/ - pushq %rbp - CFI_ADJUST_CFA_OFFSET 8 - CFI_REL_OFFSET rsp,0 - pushfq - CFI_ADJUST_CFA_OFFSET 8 - /*CFI_REL_OFFSET rflags,0*/ - movl $VSYSCALL32_SYSEXIT, %r10d - CFI_REGISTER rip,r10 - pushq $__USER32_CS - CFI_ADJUST_CFA_OFFSET 8 - /*CFI_REL_OFFSET cs,0*/ - movl %eax, %eax - pushq %r10 - CFI_ADJUST_CFA_OFFSET 8 - CFI_REL_OFFSET rip,0 - pushq %rax - CFI_ADJUST_CFA_OFFSET 8 - cld - SAVE_ARGS 0,0,1 - /* no need to do an access_ok check here because rbp has been - 32bit zero extended */ -1: movl (%rbp),%r9d - .section __ex_table,"a" - .quad 1b,ia32_badarg - .previous - GET_THREAD_INFO(%r10) - orl $TS_COMPAT,threadinfo_status(%r10) - testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10) - CFI_REMEMBER_STATE - jnz sysenter_tracesys -sysenter_do_call: - cmpl $(IA32_NR_syscalls-1),%eax - ja ia32_badsys - IA32_ARG_FIXUP 1 - call *ia32_sys_call_table(,%rax,8) - movq %rax,RAX-ARGOFFSET(%rsp) - GET_THREAD_INFO(%r10) - cli - TRACE_IRQS_OFF - testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10) - jnz int_ret_from_sys_call - andl $~TS_COMPAT,threadinfo_status(%r10) - /* clear IF, that popfq doesn't enable interrupts early */ - andl $~0x200,EFLAGS-R11(%rsp) - RESTORE_ARGS 1,24,1,1,1,1 - popfq - CFI_ADJUST_CFA_OFFSET -8 - /*CFI_RESTORE rflags*/ - popq %rcx /* User %esp */ - CFI_ADJUST_CFA_OFFSET -8 - CFI_REGISTER rsp,rcx - movl $VSYSCALL32_SYSEXIT,%edx /* User %eip */ - CFI_REGISTER rip,rdx - TRACE_IRQS_ON - swapgs - sti /* sti only takes effect after the next instruction */ - /* sysexit */ - .byte 0xf, 0x35 - -sysenter_tracesys: - CFI_RESTORE_STATE - SAVE_REST - CLEAR_RREGS - movq $-ENOSYS,RAX(%rsp) /* really needed? */ - movq %rsp,%rdi /* &pt_regs -> arg1 */ - call syscall_trace_enter - LOAD_ARGS32 ARGOFFSET /* reload args from stack in case ptrace changed it */ - RESTORE_REST - movl %ebp, %ebp - /* no need to do an access_ok check here because rbp has been - 32bit zero extended */ -1: movl (%rbp),%r9d - .section __ex_table,"a" - .quad 1b,ia32_badarg - .previous - jmp sysenter_do_call - CFI_ENDPROC -ENDPROC(ia32_sysenter_target) - -/* - * 32bit SYSCALL instruction entry. - * - * Arguments: - * %eax System call number. - * %ebx Arg1 - * %ecx return EIP - * %edx Arg3 - * %esi Arg4 - * %edi Arg5 - * %ebp Arg2 [note: not saved in the stack frame, should not be touched] - * %esp user stack - * 0(%esp) Arg6 - * - * Interrupts off. - * - * This is purely a fast path. For anything complicated we use the int 0x80 - * path below. Set up a complete hardware stack frame to share code - * with the int 0x80 path. - */ -ENTRY(ia32_cstar_target) - CFI_STARTPROC32 simple - CFI_SIGNAL_FRAME - CFI_DEF_CFA rsp,PDA_STACKOFFSET - CFI_REGISTER rip,rcx - /*CFI_REGISTER rflags,r11*/ - swapgs - movl %esp,%r8d - CFI_REGISTER rsp,r8 - movq %gs:pda_kernelstack,%rsp - /* - * No need to follow this irqs on/off section: the syscall - * disabled irqs and here we enable it straight after entry: - */ - sti - SAVE_ARGS 8,1,1 - movl %eax,%eax /* zero extension */ - movq %rax,ORIG_RAX-ARGOFFSET(%rsp) - movq %rcx,RIP-ARGOFFSET(%rsp) - CFI_REL_OFFSET rip,RIP-ARGOFFSET - movq %rbp,RCX-ARGOFFSET(%rsp) /* this lies slightly to ptrace */ - movl %ebp,%ecx - movq $__USER32_CS,CS-ARGOFFSET(%rsp) - movq $__USER32_DS,SS-ARGOFFSET(%rsp) - movq %r11,EFLAGS-ARGOFFSET(%rsp) - /*CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/ - movq %r8,RSP-ARGOFFSET(%rsp) - CFI_REL_OFFSET rsp,RSP-ARGOFFSET - /* no need to do an access_ok check here because r8 has been - 32bit zero extended */ - /* hardware stack frame is complete now */ -1: movl (%r8),%r9d - .section __ex_table,"a" - .quad 1b,ia32_badarg - .previous - GET_THREAD_INFO(%r10) - orl $TS_COMPAT,threadinfo_status(%r10) - testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10) - CFI_REMEMBER_STATE - jnz cstar_tracesys -cstar_do_call: - cmpl $IA32_NR_syscalls-1,%eax - ja ia32_badsys - IA32_ARG_FIXUP 1 - call *ia32_sys_call_table(,%rax,8) - movq %rax,RAX-ARGOFFSET(%rsp) - GET_THREAD_INFO(%r10) - cli - TRACE_IRQS_OFF - testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10) - jnz int_ret_from_sys_call - andl $~TS_COMPAT,threadinfo_status(%r10) - RESTORE_ARGS 1,-ARG_SKIP,1,1,1 - movl RIP-ARGOFFSET(%rsp),%ecx - CFI_REGISTER rip,rcx - movl EFLAGS-ARGOFFSET(%rsp),%r11d - /*CFI_REGISTER rflags,r11*/ - TRACE_IRQS_ON - movl RSP-ARGOFFSET(%rsp),%esp - CFI_RESTORE rsp - swapgs - sysretl - -cstar_tracesys: - CFI_RESTORE_STATE - SAVE_REST - CLEAR_RREGS - movq $-ENOSYS,RAX(%rsp) /* really needed? */ - movq %rsp,%rdi /* &pt_regs -> arg1 */ - call syscall_trace_enter - LOAD_ARGS32 ARGOFFSET /* reload args from stack in case ptrace changed it */ - RESTORE_REST - movl RSP-ARGOFFSET(%rsp), %r8d - /* no need to do an access_ok check here because r8 has been - 32bit zero extended */ -1: movl (%r8),%r9d - .section __ex_table,"a" - .quad 1b,ia32_badarg - .previous - jmp cstar_do_call -END(ia32_cstar_target) - -ia32_badarg: - movq $-EFAULT,%rax - jmp ia32_sysret - CFI_ENDPROC - -/* - * Emulated IA32 system calls via int 0x80. - * - * Arguments: - * %eax System call number. - * %ebx Arg1 - * %ecx Arg2 - * %edx Arg3 - * %esi Arg4 - * %edi Arg5 - * %ebp Arg6 [note: not saved in the stack frame, should not be touched] - * - * Notes: - * Uses the same stack frame as the x86-64 version. - * All registers except %eax must be saved (but ptrace may violate that) - * Arguments are zero extended. For system calls that want sign extension and - * take long arguments a wrapper is needed. Most calls can just be called - * directly. - * Assumes it is only called from user space and entered with interrupts off. - */ - -ENTRY(ia32_syscall) - CFI_STARTPROC32 simple - CFI_SIGNAL_FRAME - CFI_DEF_CFA rsp,SS+8-RIP - /*CFI_REL_OFFSET ss,SS-RIP*/ - CFI_REL_OFFSET rsp,RSP-RIP - /*CFI_REL_OFFSET rflags,EFLAGS-RIP*/ - /*CFI_REL_OFFSET cs,CS-RIP*/ - CFI_REL_OFFSET rip,RIP-RIP - swapgs - /* - * No need to follow this irqs on/off section: the syscall - * disabled irqs and here we enable it straight after entry: - */ - sti - movl %eax,%eax - pushq %rax - CFI_ADJUST_CFA_OFFSET 8 - cld - /* note the registers are not zero extended to the sf. - this could be a problem. */ - SAVE_ARGS 0,0,1 - GET_THREAD_INFO(%r10) - orl $TS_COMPAT,threadinfo_status(%r10) - testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10) - jnz ia32_tracesys -ia32_do_syscall: - cmpl $(IA32_NR_syscalls-1),%eax - ja ia32_badsys - IA32_ARG_FIXUP - call *ia32_sys_call_table(,%rax,8) # xxx: rip relative -ia32_sysret: - movq %rax,RAX-ARGOFFSET(%rsp) - jmp int_ret_from_sys_call - -ia32_tracesys: - SAVE_REST - CLEAR_RREGS - movq $-ENOSYS,RAX(%rsp) /* really needed? */ - movq %rsp,%rdi /* &pt_regs -> arg1 */ - call syscall_trace_enter - LOAD_ARGS32 ARGOFFSET /* reload args from stack in case ptrace changed it */ - RESTORE_REST - jmp ia32_do_syscall -END(ia32_syscall) - -ia32_badsys: - movq $0,ORIG_RAX-ARGOFFSET(%rsp) - movq $-ENOSYS,RAX-ARGOFFSET(%rsp) - jmp int_ret_from_sys_call - -quiet_ni_syscall: - movq $-ENOSYS,%rax - ret - CFI_ENDPROC - - .macro PTREGSCALL label, func, arg - .globl \label -\label: - leaq \func(%rip),%rax - leaq -ARGOFFSET+8(%rsp),\arg /* 8 for return address */ - jmp ia32_ptregs_common - .endm - - CFI_STARTPROC32 - - PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi - PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi - PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx - PTREGSCALL stub32_sigsuspend, sys32_sigsuspend, %rcx - PTREGSCALL stub32_execve, sys32_execve, %rcx - PTREGSCALL stub32_fork, sys_fork, %rdi - PTREGSCALL stub32_clone, sys32_clone, %rdx - PTREGSCALL stub32_vfork, sys_vfork, %rdi - PTREGSCALL stub32_iopl, sys_iopl, %rsi - PTREGSCALL stub32_rt_sigsuspend, sys_rt_sigsuspend, %rdx - -ENTRY(ia32_ptregs_common) - popq %r11 - CFI_ENDPROC - CFI_STARTPROC32 simple - CFI_SIGNAL_FRAME - CFI_DEF_CFA rsp,SS+8-ARGOFFSET - CFI_REL_OFFSET rax,RAX-ARGOFFSET - CFI_REL_OFFSET rcx,RCX-ARGOFFSET - CFI_REL_OFFSET rdx,RDX-ARGOFFSET - CFI_REL_OFFSET rsi,RSI-ARGOFFSET - CFI_REL_OFFSET rdi,RDI-ARGOFFSET - CFI_REL_OFFSET rip,RIP-ARGOFFSET -/* CFI_REL_OFFSET cs,CS-ARGOFFSET*/ -/* CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/ - CFI_REL_OFFSET rsp,RSP-ARGOFFSET -/* CFI_REL_OFFSET ss,SS-ARGOFFSET*/ - SAVE_REST - call *%rax - RESTORE_REST - jmp ia32_sysret /* misbalances the return cache */ - CFI_ENDPROC -END(ia32_ptregs_common) - - .section .rodata,"a" - .align 8 -ia32_sys_call_table: - .quad sys_restart_syscall - .quad sys_exit - .quad stub32_fork - .quad sys_read - .quad sys_write - .quad compat_sys_open /* 5 */ - .quad sys_close - .quad sys32_waitpid - .quad sys_creat - .quad sys_link - .quad sys_unlink /* 10 */ - .quad stub32_execve - .quad sys_chdir - .quad compat_sys_time - .quad sys_mknod - .quad sys_chmod /* 15 */ - .quad sys_lchown16 - .quad quiet_ni_syscall /* old break syscall holder */ - .quad sys_stat - .quad sys32_lseek - .quad sys_getpid /* 20 */ - .quad compat_sys_mount /* mount */ - .quad sys_oldumount /* old_umount */ - .quad sys_setuid16 - .quad sys_getuid16 - .quad compat_sys_stime /* stime */ /* 25 */ - .quad sys32_ptrace /* ptrace */ - .quad sys_alarm - .quad sys_fstat /* (old)fstat */ - .quad sys_pause - .quad compat_sys_utime /* 30 */ - .quad quiet_ni_syscall /* old stty syscall holder */ - .quad quiet_ni_syscall /* old gtty syscall holder */ - .quad sys_access - .quad sys_nice - .quad quiet_ni_syscall /* 35 */ /* old ftime syscall holder */ - .quad sys_sync - .quad sys32_kill - .quad sys_rename - .quad sys_mkdir - .quad sys_rmdir /* 40 */ - .quad sys_dup - .quad sys32_pipe - .quad compat_sys_times - .quad quiet_ni_syscall /* old prof syscall holder */ - .quad sys_brk /* 45 */ - .quad sys_setgid16 - .quad sys_getgid16 - .quad sys_signal - .quad sys_geteuid16 - .quad sys_getegid16 /* 50 */ - .quad sys_acct - .quad sys_umount /* new_umount */ - .quad quiet_ni_syscall /* old lock syscall holder */ - .quad compat_sys_ioctl - .quad compat_sys_fcntl64 /* 55 */ - .quad quiet_ni_syscall /* old mpx syscall holder */ - .quad sys_setpgid - .quad quiet_ni_syscall /* old ulimit syscall holder */ - .quad sys32_olduname - .quad sys_umask /* 60 */ - .quad sys_chroot - .quad sys32_ustat - .quad sys_dup2 - .quad sys_getppid - .quad sys_getpgrp /* 65 */ - .quad sys_setsid - .quad sys32_sigaction - .quad sys_sgetmask - .quad sys_ssetmask - .quad sys_setreuid16 /* 70 */ - .quad sys_setregid16 - .quad stub32_sigsuspend - .quad compat_sys_sigpending - .quad sys_sethostname - .quad compat_sys_setrlimit /* 75 */ - .quad compat_sys_old_getrlimit /* old_getrlimit */ - .quad compat_sys_getrusage - .quad sys32_gettimeofday - .quad sys32_settimeofday - .quad sys_getgroups16 /* 80 */ - .quad sys_setgroups16 - .quad sys32_old_select - .quad sys_symlink - .quad sys_lstat - .quad sys_readlink /* 85 */ - .quad sys_uselib - .quad sys_swapon - .quad sys_reboot - .quad compat_sys_old_readdir - .quad sys32_mmap /* 90 */ - .quad sys_munmap - .quad sys_truncate - .quad sys_ftruncate - .quad sys_fchmod - .quad sys_fchown16 /* 95 */ - .quad sys_getpriority - .quad sys_setpriority - .quad quiet_ni_syscall /* old profil syscall holder */ - .quad compat_sys_statfs - .quad compat_sys_fstatfs /* 100 */ - .quad sys_ioperm - .quad compat_sys_socketcall - .quad sys_syslog - .quad compat_sys_setitimer - .quad compat_sys_getitimer /* 105 */ - .quad compat_sys_newstat - .quad compat_sys_newlstat - .quad compat_sys_newfstat - .quad sys32_uname - .quad stub32_iopl /* 110 */ - .quad sys_vhangup - .quad quiet_ni_syscall /* old "idle" system call */ - .quad sys32_vm86_warning /* vm86old */ - .quad compat_sys_wait4 - .quad sys_swapoff /* 115 */ - .quad compat_sys_sysinfo - .quad sys32_ipc - .quad sys_fsync - .quad stub32_sigreturn - .quad stub32_clone /* 120 */ - .quad sys_setdomainname - .quad sys_uname - .quad sys_modify_ldt - .quad compat_sys_adjtimex - .quad sys32_mprotect /* 125 */ - .quad compat_sys_sigprocmask - .quad quiet_ni_syscall /* create_module */ - .quad sys_init_module - .quad sys_delete_module - .quad quiet_ni_syscall /* 130 get_kernel_syms */ - .quad sys32_quotactl - .quad sys_getpgid - .quad sys_fchdir - .quad quiet_ni_syscall /* bdflush */ - .quad sys_sysfs /* 135 */ - .quad sys_personality - .quad quiet_ni_syscall /* for afs_syscall */ - .quad sys_setfsuid16 - .quad sys_setfsgid16 - .quad sys_llseek /* 140 */ - .quad compat_sys_getdents - .quad compat_sys_select - .quad sys_flock - .quad sys_msync - .quad compat_sys_readv /* 145 */ - .quad compat_sys_writev - .quad sys_getsid - .quad sys_fdatasync - .quad sys32_sysctl /* sysctl */ - .quad sys_mlock /* 150 */ - .quad sys_munlock - .quad sys_mlockall - .quad sys_munlockall - .quad sys_sched_setparam - .quad sys_sched_getparam /* 155 */ - .quad sys_sched_setscheduler - .quad sys_sched_getscheduler - .quad sys_sched_yield - .quad sys_sched_get_priority_max - .quad sys_sched_get_priority_min /* 160 */ - .quad sys32_sched_rr_get_interval - .quad compat_sys_nanosleep - .quad sys_mremap - .quad sys_setresuid16 - .quad sys_getresuid16 /* 165 */ - .quad sys32_vm86_warning /* vm86 */ - .quad quiet_ni_syscall /* query_module */ - .quad sys_poll - .quad compat_sys_nfsservctl - .quad sys_setresgid16 /* 170 */ - .quad sys_getresgid16 - .quad sys_prctl - .quad stub32_rt_sigreturn - .quad sys32_rt_sigaction - .quad sys32_rt_sigprocmask /* 175 */ - .quad sys32_rt_sigpending - .quad compat_sys_rt_sigtimedwait - .quad sys32_rt_sigqueueinfo - .quad stub32_rt_sigsuspend - .quad sys32_pread /* 180 */ - .quad sys32_pwrite - .quad sys_chown16 - .quad sys_getcwd - .quad sys_capget - .quad sys_capset - .quad stub32_sigaltstack - .quad sys32_sendfile - .quad quiet_ni_syscall /* streams1 */ - .quad quiet_ni_syscall /* streams2 */ - .quad stub32_vfork /* 190 */ - .quad compat_sys_getrlimit - .quad sys32_mmap2 - .quad sys32_truncate64 - .quad sys32_ftruncate64 - .quad sys32_stat64 /* 195 */ - .quad sys32_lstat64 - .quad sys32_fstat64 - .quad sys_lchown - .quad sys_getuid - .quad sys_getgid /* 200 */ - .quad sys_geteuid - .quad sys_getegid - .quad sys_setreuid - .quad sys_setregid - .quad sys_getgroups /* 205 */ - .quad sys_setgroups - .quad sys_fchown - .quad sys_setresuid - .quad sys_getresuid - .quad sys_setresgid /* 210 */ - .quad sys_getresgid - .quad sys_chown - .quad sys_setuid - .quad sys_setgid - .quad sys_setfsuid /* 215 */ - .quad sys_setfsgid - .quad sys_pivot_root - .quad sys_mincore - .quad sys_madvise - .quad compat_sys_getdents64 /* 220 getdents64 */ - .quad compat_sys_fcntl64 - .quad quiet_ni_syscall /* tux */ - .quad quiet_ni_syscall /* security */ - .quad sys_gettid - .quad sys32_readahead /* 225 */ - .quad sys_setxattr - .quad sys_lsetxattr - .quad sys_fsetxattr - .quad sys_getxattr - .quad sys_lgetxattr /* 230 */ - .quad sys_fgetxattr - .quad sys_listxattr - .quad sys_llistxattr - .quad sys_flistxattr - .quad sys_removexattr /* 235 */ - .quad sys_lremovexattr - .quad sys_fremovexattr - .quad sys_tkill - .quad sys_sendfile64 - .quad compat_sys_futex /* 240 */ - .quad compat_sys_sched_setaffinity - .quad compat_sys_sched_getaffinity - .quad sys32_set_thread_area - .quad sys32_get_thread_area - .quad compat_sys_io_setup /* 245 */ - .quad sys_io_destroy - .quad compat_sys_io_getevents - .quad compat_sys_io_submit - .quad sys_io_cancel - .quad sys32_fadvise64 /* 250 */ - .quad quiet_ni_syscall /* free_huge_pages */ - .quad sys_exit_group - .quad sys32_lookup_dcookie - .quad sys_epoll_create - .quad sys_epoll_ctl /* 255 */ - .quad sys_epoll_wait - .quad sys_remap_file_pages - .quad sys_set_tid_address - .quad compat_sys_timer_create - .quad compat_sys_timer_settime /* 260 */ - .quad compat_sys_timer_gettime - .quad sys_timer_getoverrun - .quad sys_timer_delete - .quad compat_sys_clock_settime - .quad compat_sys_clock_gettime /* 265 */ - .quad compat_sys_clock_getres - .quad compat_sys_clock_nanosleep - .quad compat_sys_statfs64 - .quad compat_sys_fstatfs64 - .quad sys_tgkill /* 270 */ - .quad compat_sys_utimes - .quad sys32_fadvise64_64 - .quad quiet_ni_syscall /* sys_vserver */ - .quad sys_mbind - .quad compat_sys_get_mempolicy /* 275 */ - .quad sys_set_mempolicy - .quad compat_sys_mq_open - .quad sys_mq_unlink - .quad compat_sys_mq_timedsend - .quad compat_sys_mq_timedreceive /* 280 */ - .quad compat_sys_mq_notify - .quad compat_sys_mq_getsetattr - .quad compat_sys_kexec_load /* reserved for kexec */ - .quad compat_sys_waitid - .quad quiet_ni_syscall /* 285: sys_altroot */ - .quad sys_add_key - .quad sys_request_key - .quad sys_keyctl - .quad sys_ioprio_set - .quad sys_ioprio_get /* 290 */ - .quad sys_inotify_init - .quad sys_inotify_add_watch - .quad sys_inotify_rm_watch - .quad sys_migrate_pages - .quad compat_sys_openat /* 295 */ - .quad sys_mkdirat - .quad sys_mknodat - .quad sys_fchownat - .quad compat_sys_futimesat - .quad sys32_fstatat /* 300 */ - .quad sys_unlinkat - .quad sys_renameat - .quad sys_linkat - .quad sys_symlinkat - .quad sys_readlinkat /* 305 */ - .quad sys_fchmodat - .quad sys_faccessat - .quad compat_sys_pselect6 - .quad compat_sys_ppoll - .quad sys_unshare /* 310 */ - .quad compat_sys_set_robust_list - .quad compat_sys_get_robust_list - .quad sys_splice - .quad sys32_sync_file_range - .quad sys_tee /* 315 */ - .quad compat_sys_vmsplice - .quad compat_sys_move_pages - .quad sys_getcpu - .quad sys_epoll_pwait - .quad compat_sys_utimensat /* 320 */ - .quad compat_sys_signalfd - .quad compat_sys_timerfd - .quad sys_eventfd - .quad sys32_fallocate -ia32_syscall_end: diff --git a/arch/x86_64/ia32/ipc32.c b/arch/x86_64/ia32/ipc32.c deleted file mode 100644 index 369151dc321..00000000000 --- a/arch/x86_64/ia32/ipc32.c +++ /dev/null @@ -1,57 +0,0 @@ -#include <linux/kernel.h> -#include <linux/spinlock.h> -#include <linux/list.h> -#include <linux/syscalls.h> -#include <linux/time.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/ipc.h> -#include <linux/compat.h> - -#include <asm-i386/ipc.h> - -asmlinkage long -sys32_ipc(u32 call, int first, int second, int third, - compat_uptr_t ptr, u32 fifth) -{ - int version; - - version = call >> 16; /* hack for backward compatibility */ - call &= 0xffff; - - switch (call) { - case SEMOP: - /* struct sembuf is the same on 32 and 64bit :)) */ - return sys_semtimedop(first, compat_ptr(ptr), second, NULL); - case SEMTIMEDOP: - return compat_sys_semtimedop(first, compat_ptr(ptr), second, - compat_ptr(fifth)); - case SEMGET: - return sys_semget(first, second, third); - case SEMCTL: - return compat_sys_semctl(first, second, third, compat_ptr(ptr)); - - case MSGSND: - return compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); - case MSGRCV: - return compat_sys_msgrcv(first, second, fifth, third, - version, compat_ptr(ptr)); - case MSGGET: - return sys_msgget((key_t) first, second); - case MSGCTL: - return compat_sys_msgctl(first, second, compat_ptr(ptr)); - - case SHMAT: - return compat_sys_shmat(first, second, third, version, - compat_ptr(ptr)); - break; - case SHMDT: - return sys_shmdt(compat_ptr(ptr)); - case SHMGET: - return sys_shmget(first, (unsigned)second, third); - case SHMCTL: - return compat_sys_shmctl(first, second, compat_ptr(ptr)); - } - return -ENOSYS; -} diff --git a/arch/x86_64/ia32/mmap32.c b/arch/x86_64/ia32/mmap32.c deleted file mode 100644 index e4b84b4a417..00000000000 --- a/arch/x86_64/ia32/mmap32.c +++ /dev/null @@ -1,79 +0,0 @@ -/* - * linux/arch/x86_64/ia32/mm/mmap.c - * - * flexible mmap layout support - * - * Based on the i386 version which was - * - * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * - * Started by Ingo Molnar <mingo@elte.hu> - */ - -#include <linux/personality.h> -#include <linux/mm.h> -#include <linux/random.h> -#include <linux/sched.h> - -/* - * Top of mmap area (just below the process stack). - * - * Leave an at least ~128 MB hole. - */ -#define MIN_GAP (128*1024*1024) -#define MAX_GAP (TASK_SIZE/6*5) - -static inline unsigned long mmap_base(struct mm_struct *mm) -{ - unsigned long gap = current->signal->rlim[RLIMIT_STACK].rlim_cur; - unsigned long random_factor = 0; - - if (current->flags & PF_RANDOMIZE) - random_factor = get_random_int() % (1024*1024); - - if (gap < MIN_GAP) - gap = MIN_GAP; - else if (gap > MAX_GAP) - gap = MAX_GAP; - - return PAGE_ALIGN(TASK_SIZE - gap - random_factor); -} - -/* - * This function, called very early during the creation of a new - * process VM image, sets up which VM layout function to use: - */ -void ia32_pick_mmap_layout(struct mm_struct *mm) -{ - /* - * Fall back to the standard layout if the personality - * bit is set, or if the expected stack growth is unlimited: - */ - if (sysctl_legacy_va_layout || - (current->personality & ADDR_COMPAT_LAYOUT) || - current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY) { - mm->mmap_base = TASK_UNMAPPED_BASE; - mm->get_unmapped_area = arch_get_unmapped_area; - mm->unmap_area = arch_unmap_area; - } else { - mm->mmap_base = mmap_base(mm); - mm->get_unmapped_area = arch_get_unmapped_area_topdown; - mm->unmap_area = arch_unmap_area_topdown; - } -} diff --git a/arch/x86_64/ia32/ptrace32.c b/arch/x86_64/ia32/ptrace32.c deleted file mode 100644 index 4a233ad6269..00000000000 --- a/arch/x86_64/ia32/ptrace32.c +++ /dev/null @@ -1,404 +0,0 @@ -/* - * 32bit ptrace for x86-64. - * - * Copyright 2001,2002 Andi Kleen, SuSE Labs. - * Some parts copied from arch/i386/kernel/ptrace.c. See that file for earlier - * copyright. - * - * This allows to access 64bit processes too; but there is no way to see the extended - * register contents. - */ - -#include <linux/kernel.h> -#include <linux/stddef.h> -#include <linux/sched.h> -#include <linux/syscalls.h> -#include <linux/unistd.h> -#include <linux/mm.h> -#include <linux/err.h> -#include <linux/ptrace.h> -#include <asm/ptrace.h> -#include <asm/compat.h> -#include <asm/uaccess.h> -#include <asm/user32.h> -#include <asm/user.h> -#include <asm/errno.h> -#include <asm/debugreg.h> -#include <asm/i387.h> -#include <asm/fpu32.h> -#include <asm/ia32.h> - -/* - * Determines which flags the user has access to [1 = access, 0 = no access]. - * Prohibits changing ID(21), VIP(20), VIF(19), VM(17), IOPL(12-13), IF(9). - * Also masks reserved bits (31-22, 15, 5, 3, 1). - */ -#define FLAG_MASK 0x54dd5UL - -#define R32(l,q) \ - case offsetof(struct user32, regs.l): stack[offsetof(struct pt_regs, q)/8] = val; break - -static int putreg32(struct task_struct *child, unsigned regno, u32 val) -{ - int i; - __u64 *stack = (__u64 *)task_pt_regs(child); - - switch (regno) { - case offsetof(struct user32, regs.fs): - if (val && (val & 3) != 3) return -EIO; - child->thread.fsindex = val & 0xffff; - break; - case offsetof(struct user32, regs.gs): - if (val && (val & 3) != 3) return -EIO; - child->thread.gsindex = val & 0xffff; - break; - case offsetof(struct user32, regs.ds): - if (val && (val & 3) != 3) return -EIO; - child->thread.ds = val & 0xffff; - break; - case offsetof(struct user32, regs.es): - child->thread.es = val & 0xffff; - break; - case offsetof(struct user32, regs.ss): - if ((val & 3) != 3) return -EIO; - stack[offsetof(struct pt_regs, ss)/8] = val & 0xffff; - break; - case offsetof(struct user32, regs.cs): - if ((val & 3) != 3) return -EIO; - stack[offsetof(struct pt_regs, cs)/8] = val & 0xffff; - break; - - R32(ebx, rbx); - R32(ecx, rcx); - R32(edx, rdx); - R32(edi, rdi); - R32(esi, rsi); - R32(ebp, rbp); - R32(eax, rax); - R32(orig_eax, orig_rax); - R32(eip, rip); - R32(esp, rsp); - - case offsetof(struct user32, regs.eflags): { - __u64 *flags = &stack[offsetof(struct pt_regs, eflags)/8]; - val &= FLAG_MASK; - *flags = val | (*flags & ~FLAG_MASK); - break; - } - - case offsetof(struct user32, u_debugreg[4]): - case offsetof(struct user32, u_debugreg[5]): - return -EIO; - - case offsetof(struct user32, u_debugreg[0]): - child->thread.debugreg0 = val; - break; - - case offsetof(struct user32, u_debugreg[1]): - child->thread.debugreg1 = val; - break; - - case offsetof(struct user32, u_debugreg[2]): - child->thread.debugreg2 = val; - break; - - case offsetof(struct user32, u_debugreg[3]): - child->thread.debugreg3 = val; - break; - - case offsetof(struct user32, u_debugreg[6]): - child->thread.debugreg6 = val; - break; - - case offsetof(struct user32, u_debugreg[7]): - val &= ~DR_CONTROL_RESERVED; - /* See arch/i386/kernel/ptrace.c for an explanation of - * this awkward check.*/ - for(i=0; i<4; i++) - if ((0x5454 >> ((val >> (16 + 4*i)) & 0xf)) & 1) - return -EIO; - child->thread.debugreg7 = val; - if (val) - set_tsk_thread_flag(child, TIF_DEBUG); - else - clear_tsk_thread_flag(child, TIF_DEBUG); - break; - - default: - if (regno > sizeof(struct user32) || (regno & 3)) - return -EIO; - - /* Other dummy fields in the virtual user structure are ignored */ - break; - } - return 0; -} - -#undef R32 - -#define R32(l,q) \ - case offsetof(struct user32, regs.l): *val = stack[offsetof(struct pt_regs, q)/8]; break - -static int getreg32(struct task_struct *child, unsigned regno, u32 *val) -{ - __u64 *stack = (__u64 *)task_pt_regs(child); - - switch (regno) { - case offsetof(struct user32, regs.fs): - *val = child->thread.fsindex; - break; - case offsetof(struct user32, regs.gs): - *val = child->thread.gsindex; - break; - case offsetof(struct user32, regs.ds): - *val = child->thread.ds; - break; - case offsetof(struct user32, regs.es): - *val = child->thread.es; - break; - - R32(cs, cs); - R32(ss, ss); - R32(ebx, rbx); - R32(ecx, rcx); - R32(edx, rdx); - R32(edi, rdi); - R32(esi, rsi); - R32(ebp, rbp); - R32(eax, rax); - R32(orig_eax, orig_rax); - R32(eip, rip); - R32(eflags, eflags); - R32(esp, rsp); - - case offsetof(struct user32, u_debugreg[0]): - *val = child->thread.debugreg0; - break; - case offsetof(struct user32, u_debugreg[1]): - *val = child->thread.debugreg1; - break; - case offsetof(struct user32, u_debugreg[2]): - *val = child->thread.debugreg2; - break; - case offsetof(struct user32, u_debugreg[3]): - *val = child->thread.debugreg3; - break; - case offsetof(struct user32, u_debugreg[6]): - *val = child->thread.debugreg6; - break; - case offsetof(struct user32, u_debugreg[7]): - *val = child->thread.debugreg7; - break; - - default: - if (regno > sizeof(struct user32) || (regno & 3)) - return -EIO; - - /* Other dummy fields in the virtual user structure are ignored */ - *val = 0; - break; - } - return 0; -} - -#undef R32 - -static long ptrace32_siginfo(unsigned request, u32 pid, u32 addr, u32 data) -{ - int ret; - compat_siginfo_t __user *si32 = compat_ptr(data); - siginfo_t ssi; - siginfo_t __user *si = compat_alloc_user_space(sizeof(siginfo_t)); - if (request == PTRACE_SETSIGINFO) { - memset(&ssi, 0, sizeof(siginfo_t)); - ret = copy_siginfo_from_user32(&ssi, si32); - if (ret) - return ret; - if (copy_to_user(si, &ssi, sizeof(siginfo_t))) - return -EFAULT; - } - ret = sys_ptrace(request, pid, addr, (unsigned long)si); - if (ret) - return ret; - if (request == PTRACE_GETSIGINFO) { - if (copy_from_user(&ssi, si, sizeof(siginfo_t))) - return -EFAULT; - ret = copy_siginfo_to_user32(si32, &ssi); - } - return ret; -} - -asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data) -{ - struct task_struct *child; - struct pt_regs *childregs; - void __user *datap = compat_ptr(data); - int ret; - __u32 val; - - switch (request) { - case PTRACE_TRACEME: - case PTRACE_ATTACH: - case PTRACE_KILL: - case PTRACE_CONT: - case PTRACE_SINGLESTEP: - case PTRACE_DETACH: - case PTRACE_SYSCALL: - case PTRACE_OLDSETOPTIONS: - case PTRACE_SETOPTIONS: - case PTRACE_SET_THREAD_AREA: - case PTRACE_GET_THREAD_AREA: - return sys_ptrace(request, pid, addr, data); - - default: - return -EINVAL; - - case PTRACE_PEEKTEXT: - case PTRACE_PEEKDATA: - case PTRACE_POKEDATA: - case PTRACE_POKETEXT: - case PTRACE_POKEUSR: - case PTRACE_PEEKUSR: - case PTRACE_GETREGS: - case PTRACE_SETREGS: - case PTRACE_SETFPREGS: - case PTRACE_GETFPREGS: - case PTRACE_SETFPXREGS: - case PTRACE_GETFPXREGS: - case PTRACE_GETEVENTMSG: - break; - - case PTRACE_SETSIGINFO: - case PTRACE_GETSIGINFO: - return ptrace32_siginfo(request, pid, addr, data); - } - - child = ptrace_get_task_struct(pid); - if (IS_ERR(child)) - return PTR_ERR(child); - - ret = ptrace_check_attach(child, request == PTRACE_KILL); - if (ret < 0) - goto out; - - childregs = task_pt_regs(child); - - switch (request) { - case PTRACE_PEEKDATA: - case PTRACE_PEEKTEXT: - ret = 0; - if (access_process_vm(child, addr, &val, sizeof(u32), 0)!=sizeof(u32)) - ret = -EIO; - else - ret = put_user(val, (unsigned int __user *)datap); - break; - - case PTRACE_POKEDATA: - case PTRACE_POKETEXT: - ret = 0; - if (access_process_vm(child, addr, &data, sizeof(u32), 1)!=sizeof(u32)) - ret = -EIO; - break; - - case PTRACE_PEEKUSR: - ret = getreg32(child, addr, &val); - if (ret == 0) - ret = put_user(val, (__u32 __user *)datap); - break; - - case PTRACE_POKEUSR: - ret = putreg32(child, addr, data); - break; - - case PTRACE_GETREGS: { /* Get all gp regs from the child. */ - int i; - if (!access_ok(VERIFY_WRITE, datap, 16*4)) { - ret = -EIO; - break; - } - ret = 0; - for ( i = 0; i <= 16*4 ; i += sizeof(__u32) ) { - getreg32(child, i, &val); - ret |= __put_user(val,(u32 __user *)datap); - datap += sizeof(u32); - } - break; - } - - case PTRACE_SETREGS: { /* Set all gp regs in the child. */ - unsigned long tmp; - int i; - if (!access_ok(VERIFY_READ, datap, 16*4)) { - ret = -EIO; - break; - } - ret = 0; - for ( i = 0; i <= 16*4; i += sizeof(u32) ) { - ret |= __get_user(tmp, (u32 __user *)datap); - putreg32(child, i, tmp); - datap += sizeof(u32); - } - break; - } - - case PTRACE_GETFPREGS: - ret = -EIO; - if (!access_ok(VERIFY_READ, compat_ptr(data), - sizeof(struct user_i387_struct))) - break; - save_i387_ia32(child, datap, childregs, 1); - ret = 0; - break; - - case PTRACE_SETFPREGS: - ret = -EIO; - if (!access_ok(VERIFY_WRITE, datap, - sizeof(struct user_i387_struct))) - break; - ret = 0; - /* don't check EFAULT to be bug-to-bug compatible to i386 */ - restore_i387_ia32(child, datap, 1); - break; - - case PTRACE_GETFPXREGS: { - struct user32_fxsr_struct __user *u = datap; - init_fpu(child); - ret = -EIO; - if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) - break; - ret = -EFAULT; - if (__copy_to_user(u, &child->thread.i387.fxsave, sizeof(*u))) - break; - ret = __put_user(childregs->cs, &u->fcs); - ret |= __put_user(child->thread.ds, &u->fos); - break; - } - case PTRACE_SETFPXREGS: { - struct user32_fxsr_struct __user *u = datap; - unlazy_fpu(child); - ret = -EIO; - if (!access_ok(VERIFY_READ, u, sizeof(*u))) - break; - /* no checking to be bug-to-bug compatible with i386. */ - /* but silence warning */ - if (__copy_from_user(&child->thread.i387.fxsave, u, sizeof(*u))) - ; - set_stopped_child_used_math(child); - child->thread.i387.fxsave.mxcsr &= mxcsr_feature_mask; - ret = 0; - break; - } - - case PTRACE_GETEVENTMSG: - ret = put_user(child->ptrace_message,(unsigned int __user *)compat_ptr(data)); - break; - - default: - BUG(); - } - - out: - put_task_struct(child); - return ret; -} - diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c deleted file mode 100644 index bee96d61443..00000000000 --- a/arch/x86_64/ia32/sys_ia32.c +++ /dev/null @@ -1,889 +0,0 @@ -/* - * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Based on - * sys_sparc32 - * - * Copyright (C) 2000 VA Linux Co - * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> - * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com> - * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) - * Copyright (C) 2000 Hewlett-Packard Co. - * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> - * Copyright (C) 2000,2001,2002 Andi Kleen, SuSE Labs (x86-64 port) - * - * These routines maintain argument size conversion between 32bit and 64bit - * environment. In 2.5 most of this should be moved to a generic directory. - * - * This file assumes that there is a hole at the end of user address space. - * - * Some of the functions are LE specific currently. These are hopefully all marked. - * This should be fixed. - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/fs.h> -#include <linux/file.h> -#include <linux/signal.h> -#include <linux/syscalls.h> -#include <linux/resource.h> -#include <linux/times.h> -#include <linux/utsname.h> -#include <linux/smp.h> -#include <linux/smp_lock.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/mm.h> -#include <linux/shm.h> -#include <linux/slab.h> -#include <linux/uio.h> -#include <linux/nfs_fs.h> -#include <linux/quota.h> -#include <linux/module.h> -#include <linux/sunrpc/svc.h> -#include <linux/nfsd/nfsd.h> -#include <linux/nfsd/cache.h> -#include <linux/nfsd/xdr.h> -#include <linux/nfsd/syscall.h> -#include <linux/poll.h> -#include <linux/personality.h> -#include <linux/stat.h> -#include <linux/ipc.h> -#include <linux/rwsem.h> -#include <linux/binfmts.h> -#include <linux/init.h> -#include <linux/aio_abi.h> -#include <linux/aio.h> -#include <linux/compat.h> -#include <linux/vfs.h> -#include <linux/ptrace.h> -#include <linux/highuid.h> -#include <linux/vmalloc.h> -#include <linux/fsnotify.h> -#include <linux/sysctl.h> -#include <asm/mman.h> -#include <asm/types.h> -#include <asm/uaccess.h> -#include <asm/semaphore.h> -#include <asm/atomic.h> -#include <asm/ldt.h> - -#include <net/scm.h> -#include <net/sock.h> -#include <asm/ia32.h> - -#define AA(__x) ((unsigned long)(__x)) - -int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf) -{ - compat_ino_t ino; - - typeof(ubuf->st_uid) uid = 0; - typeof(ubuf->st_gid) gid = 0; - SET_UID(uid, kbuf->uid); - SET_GID(gid, kbuf->gid); - if (!old_valid_dev(kbuf->dev) || !old_valid_dev(kbuf->rdev)) - return -EOVERFLOW; - if (kbuf->size >= 0x7fffffff) - return -EOVERFLOW; - ino = kbuf->ino; - if (sizeof(ino) < sizeof(kbuf->ino) && ino != kbuf->ino) - return -EOVERFLOW; - if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) || - __put_user (old_encode_dev(kbuf->dev), &ubuf->st_dev) || - __put_user (ino, &ubuf->st_ino) || - __put_user (kbuf->mode, &ubuf->st_mode) || - __put_user (kbuf->nlink, &ubuf->st_nlink) || - __put_user (uid, &ubuf->st_uid) || - __put_user (gid, &ubuf->st_gid) || - __put_user (old_encode_dev(kbuf->rdev), &ubuf->st_rdev) || - __put_user (kbuf->size, &ubuf->st_size) || - __put_user (kbuf->atime.tv_sec, &ubuf->st_atime) || - __put_user (kbuf->atime.tv_nsec, &ubuf->st_atime_nsec) || - __put_user (kbuf->mtime.tv_sec, &ubuf->st_mtime) || - __put_user (kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec) || - __put_user (kbuf->ctime.tv_sec, &ubuf->st_ctime) || - __put_user (kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec) || - __put_user (kbuf->blksize, &ubuf->st_blksize) || - __put_user (kbuf->blocks, &ubuf->st_blocks)) - return -EFAULT; - return 0; -} - -asmlinkage long -sys32_truncate64(char __user * filename, unsigned long offset_low, unsigned long offset_high) -{ - return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low); -} - -asmlinkage long -sys32_ftruncate64(unsigned int fd, unsigned long offset_low, unsigned long offset_high) -{ - return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low); -} - -/* Another set for IA32/LFS -- x86_64 struct stat is different due to - support for 64bit inode numbers. */ - -static int -cp_stat64(struct stat64 __user *ubuf, struct kstat *stat) -{ - typeof(ubuf->st_uid) uid = 0; - typeof(ubuf->st_gid) gid = 0; - SET_UID(uid, stat->uid); - SET_GID(gid, stat->gid); - if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) || - __put_user(huge_encode_dev(stat->dev), &ubuf->st_dev) || - __put_user (stat->ino, &ubuf->__st_ino) || - __put_user (stat->ino, &ubuf->st_ino) || - __put_user (stat->mode, &ubuf->st_mode) || - __put_user (stat->nlink, &ubuf->st_nlink) || - __put_user (uid, &ubuf->st_uid) || - __put_user (gid, &ubuf->st_gid) || - __put_user (huge_encode_dev(stat->rdev), &ubuf->st_rdev) || - __put_user (stat->size, &ubuf->st_size) || - __put_user (stat->atime.tv_sec, &ubuf->st_atime) || - __put_user (stat->atime.tv_nsec, &ubuf->st_atime_nsec) || - __put_user (stat->mtime.tv_sec, &ubuf->st_mtime) || - __put_user (stat->mtime.tv_nsec, &ubuf->st_mtime_nsec) || - __put_user (stat->ctime.tv_sec, &ubuf->st_ctime) || - __put_user (stat->ctime.tv_nsec, &ubuf->st_ctime_nsec) || - __put_user (stat->blksize, &ubuf->st_blksize) || - __put_user (stat->blocks, &ubuf->st_blocks)) - return -EFAULT; - return 0; -} - -asmlinkage long -sys32_stat64(char __user * filename, struct stat64 __user *statbuf) -{ - struct kstat stat; - int ret = vfs_stat(filename, &stat); - if (!ret) - ret = cp_stat64(statbuf, &stat); - return ret; -} - -asmlinkage long -sys32_lstat64(char __user * filename, struct stat64 __user *statbuf) -{ - struct kstat stat; - int ret = vfs_lstat(filename, &stat); - if (!ret) - ret = cp_stat64(statbuf, &stat); - return ret; -} - -asmlinkage long -sys32_fstat64(unsigned int fd, struct stat64 __user *statbuf) -{ - struct kstat stat; - int ret = vfs_fstat(fd, &stat); - if (!ret) - ret = cp_stat64(statbuf, &stat); - return ret; -} - -asmlinkage long -sys32_fstatat(unsigned int dfd, char __user *filename, - struct stat64 __user* statbuf, int flag) -{ - struct kstat stat; - int error = -EINVAL; - - if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0) - goto out; - - if (flag & AT_SYMLINK_NOFOLLOW) - error = vfs_lstat_fd(dfd, filename, &stat); - else - error = vfs_stat_fd(dfd, filename, &stat); - - if (!error) - error = cp_stat64(statbuf, &stat); - -out: - return error; -} - -/* - * Linux/i386 didn't use to be able to handle more than - * 4 system call parameters, so these system calls used a memory - * block for parameter passing.. - */ - -struct mmap_arg_struct { - unsigned int addr; - unsigned int len; - unsigned int prot; - unsigned int flags; - unsigned int fd; - unsigned int offset; -}; - -asmlinkage long -sys32_mmap(struct mmap_arg_struct __user *arg) -{ - struct mmap_arg_struct a; - struct file *file = NULL; - unsigned long retval; - struct mm_struct *mm ; - - if (copy_from_user(&a, arg, sizeof(a))) - return -EFAULT; - - if (a.offset & ~PAGE_MASK) - return -EINVAL; - - if (!(a.flags & MAP_ANONYMOUS)) { - file = fget(a.fd); - if (!file) - return -EBADF; - } - - mm = current->mm; - down_write(&mm->mmap_sem); - retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, a.offset>>PAGE_SHIFT); - if (file) - fput(file); - - up_write(&mm->mmap_sem); - - return retval; -} - -asmlinkage long -sys32_mprotect(unsigned long start, size_t len, unsigned long prot) -{ - return sys_mprotect(start,len,prot); -} - -asmlinkage long -sys32_pipe(int __user *fd) -{ - int retval; - int fds[2]; - - retval = do_pipe(fds); - if (retval) - goto out; - if (copy_to_user(fd, fds, sizeof(fds))) - retval = -EFAULT; - out: - return retval; -} - -asmlinkage long -sys32_rt_sigaction(int sig, struct sigaction32 __user *act, - struct sigaction32 __user *oact, unsigned int sigsetsize) -{ - struct k_sigaction new_ka, old_ka; - int ret; - compat_sigset_t set32; - - /* XXX: Don't preclude handling different sized sigset_t's. */ - if (sigsetsize != sizeof(compat_sigset_t)) - return -EINVAL; - - if (act) { - compat_uptr_t handler, restorer; - - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(restorer, &act->sa_restorer)|| - __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t))) - return -EFAULT; - new_ka.sa.sa_handler = compat_ptr(handler); - new_ka.sa.sa_restorer = compat_ptr(restorer); - /* FIXME: here we rely on _COMPAT_NSIG_WORS to be >= than _NSIG_WORDS << 1 */ - switch (_NSIG_WORDS) { - case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] - | (((long)set32.sig[7]) << 32); - case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] - | (((long)set32.sig[5]) << 32); - case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] - | (((long)set32.sig[3]) << 32); - case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] - | (((long)set32.sig[1]) << 32); - } - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - /* FIXME: here we rely on _COMPAT_NSIG_WORS to be >= than _NSIG_WORDS << 1 */ - switch (_NSIG_WORDS) { - case 4: - set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); - set32.sig[6] = old_ka.sa.sa_mask.sig[3]; - case 3: - set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); - set32.sig[4] = old_ka.sa.sa_mask.sig[2]; - case 2: - set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); - set32.sig[2] = old_ka.sa.sa_mask.sig[1]; - case 1: - set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); - set32.sig[0] = old_ka.sa.sa_mask.sig[0]; - } - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler) || - __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t))) - return -EFAULT; - } - - return ret; -} - -asmlinkage long -sys32_sigaction (int sig, struct old_sigaction32 __user *act, struct old_sigaction32 __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - compat_old_sigset_t mask; - compat_uptr_t handler, restorer; - - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(restorer, &act->sa_restorer) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - - new_ka.sa.sa_handler = compat_ptr(handler); - new_ka.sa.sa_restorer = compat_ptr(restorer); - - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler) || - __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - -asmlinkage long -sys32_rt_sigprocmask(int how, compat_sigset_t __user *set, - compat_sigset_t __user *oset, unsigned int sigsetsize) -{ - sigset_t s; - compat_sigset_t s32; - int ret; - mm_segment_t old_fs = get_fs(); - - if (set) { - if (copy_from_user (&s32, set, sizeof(compat_sigset_t))) - return -EFAULT; - switch (_NSIG_WORDS) { - case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); - case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); - case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); - case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); - } - } - set_fs (KERNEL_DS); - ret = sys_rt_sigprocmask(how, - set ? (sigset_t __user *)&s : NULL, - oset ? (sigset_t __user *)&s : NULL, - sigsetsize); - set_fs (old_fs); - if (ret) return ret; - if (oset) { - switch (_NSIG_WORDS) { - case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; - case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; - case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; - case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; - } - if (copy_to_user (oset, &s32, sizeof(compat_sigset_t))) - return -EFAULT; - } - return 0; -} - -static inline long -get_tv32(struct timeval *o, struct compat_timeval __user *i) -{ - int err = -EFAULT; - if (access_ok(VERIFY_READ, i, sizeof(*i))) { - err = __get_user(o->tv_sec, &i->tv_sec); - err |= __get_user(o->tv_usec, &i->tv_usec); - } - return err; -} - -static inline long -put_tv32(struct compat_timeval __user *o, struct timeval *i) -{ - int err = -EFAULT; - if (access_ok(VERIFY_WRITE, o, sizeof(*o))) { - err = __put_user(i->tv_sec, &o->tv_sec); - err |= __put_user(i->tv_usec, &o->tv_usec); - } - return err; -} - -extern unsigned int alarm_setitimer(unsigned int seconds); - -asmlinkage long -sys32_alarm(unsigned int seconds) -{ - return alarm_setitimer(seconds); -} - -/* Translations due to time_t size differences. Which affects all - sorts of things, like timeval and itimerval. */ - -extern struct timezone sys_tz; - -asmlinkage long -sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) -{ - if (tv) { - struct timeval ktv; - do_gettimeofday(&ktv); - if (put_tv32(tv, &ktv)) - return -EFAULT; - } - if (tz) { - if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) - return -EFAULT; - } - return 0; -} - -asmlinkage long -sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) -{ - struct timeval ktv; - struct timespec kts; - struct timezone ktz; - - if (tv) { - if (get_tv32(&ktv, tv)) - return -EFAULT; - kts.tv_sec = ktv.tv_sec; - kts.tv_nsec = ktv.tv_usec * NSEC_PER_USEC; - } - if (tz) { - if (copy_from_user(&ktz, tz, sizeof(ktz))) - return -EFAULT; - } - - return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); -} - -struct sel_arg_struct { - unsigned int n; - unsigned int inp; - unsigned int outp; - unsigned int exp; - unsigned int tvp; -}; - -asmlinkage long -sys32_old_select(struct sel_arg_struct __user *arg) -{ - struct sel_arg_struct a; - - if (copy_from_user(&a, arg, sizeof(a))) - return -EFAULT; - return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp), - compat_ptr(a.exp), compat_ptr(a.tvp)); -} - -extern asmlinkage long -compat_sys_wait4(compat_pid_t pid, compat_uint_t * stat_addr, int options, - struct compat_rusage *ru); - -asmlinkage long -sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options) -{ - return compat_sys_wait4(pid, stat_addr, options, NULL); -} - -/* 32-bit timeval and related flotsam. */ - -asmlinkage long -sys32_sysfs(int option, u32 arg1, u32 arg2) -{ - return sys_sysfs(option, arg1, arg2); -} - -asmlinkage long -sys32_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) -{ - struct timespec t; - int ret; - mm_segment_t old_fs = get_fs (); - - set_fs (KERNEL_DS); - ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); - set_fs (old_fs); - if (put_compat_timespec(&t, interval)) - return -EFAULT; - return ret; -} - -asmlinkage long -sys32_rt_sigpending(compat_sigset_t __user *set, compat_size_t sigsetsize) -{ - sigset_t s; - compat_sigset_t s32; - int ret; - mm_segment_t old_fs = get_fs(); - - set_fs (KERNEL_DS); - ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize); - set_fs (old_fs); - if (!ret) { - switch (_NSIG_WORDS) { - case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; - case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; - case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; - case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; - } - if (copy_to_user (set, &s32, sizeof(compat_sigset_t))) - return -EFAULT; - } - return ret; -} - -asmlinkage long -sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo) -{ - siginfo_t info; - int ret; - mm_segment_t old_fs = get_fs(); - - if (copy_siginfo_from_user32(&info, uinfo)) - return -EFAULT; - set_fs (KERNEL_DS); - ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info); - set_fs (old_fs); - return ret; -} - -/* These are here just in case some old ia32 binary calls it. */ -asmlinkage long -sys32_pause(void) -{ - current->state = TASK_INTERRUPTIBLE; - schedule(); - return -ERESTARTNOHAND; -} - - -#ifdef CONFIG_SYSCTL_SYSCALL -struct sysctl_ia32 { - unsigned int name; - int nlen; - unsigned int oldval; - unsigned int oldlenp; - unsigned int newval; - unsigned int newlen; - unsigned int __unused[4]; -}; - - -asmlinkage long -sys32_sysctl(struct sysctl_ia32 __user *args32) -{ - struct sysctl_ia32 a32; - mm_segment_t old_fs = get_fs (); - void __user *oldvalp, *newvalp; - size_t oldlen; - int __user *namep; - long ret; - - if (copy_from_user(&a32, args32, sizeof (a32))) - return -EFAULT; - - /* - * We need to pre-validate these because we have to disable address checking - * before calling do_sysctl() because of OLDLEN but we can't run the risk of the - * user specifying bad addresses here. Well, since we're dealing with 32 bit - * addresses, we KNOW that access_ok() will always succeed, so this is an - * expensive NOP, but so what... - */ - namep = compat_ptr(a32.name); - oldvalp = compat_ptr(a32.oldval); - newvalp = compat_ptr(a32.newval); - - if ((oldvalp && get_user(oldlen, (int __user *)compat_ptr(a32.oldlenp))) - || !access_ok(VERIFY_WRITE, namep, 0) - || !access_ok(VERIFY_WRITE, oldvalp, 0) - || !access_ok(VERIFY_WRITE, newvalp, 0)) - return -EFAULT; - - set_fs(KERNEL_DS); - lock_kernel(); - ret = do_sysctl(namep, a32.nlen, oldvalp, (size_t __user *)&oldlen, - newvalp, (size_t) a32.newlen); - unlock_kernel(); - set_fs(old_fs); - - if (oldvalp && put_user (oldlen, (int __user *)compat_ptr(a32.oldlenp))) - return -EFAULT; - - return ret; -} -#endif - -/* warning: next two assume little endian */ -asmlinkage long -sys32_pread(unsigned int fd, char __user *ubuf, u32 count, u32 poslo, u32 poshi) -{ - return sys_pread64(fd, ubuf, count, - ((loff_t)AA(poshi) << 32) | AA(poslo)); -} - -asmlinkage long -sys32_pwrite(unsigned int fd, char __user *ubuf, u32 count, u32 poslo, u32 poshi) -{ - return sys_pwrite64(fd, ubuf, count, - ((loff_t)AA(poshi) << 32) | AA(poslo)); -} - - -asmlinkage long -sys32_personality(unsigned long personality) -{ - int ret; - if (personality(current->personality) == PER_LINUX32 && - personality == PER_LINUX) - personality = PER_LINUX32; - ret = sys_personality(personality); - if (ret == PER_LINUX32) - ret = PER_LINUX; - return ret; -} - -asmlinkage long -sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count) -{ - mm_segment_t old_fs = get_fs(); - int ret; - off_t of; - - if (offset && get_user(of, offset)) - return -EFAULT; - - set_fs(KERNEL_DS); - ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, - count); - set_fs(old_fs); - - if (offset && put_user(of, offset)) - return -EFAULT; - - return ret; -} - -asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff) -{ - struct mm_struct *mm = current->mm; - unsigned long error; - struct file * file = NULL; - - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); - if (!(flags & MAP_ANONYMOUS)) { - file = fget(fd); - if (!file) - return -EBADF; - } - - down_write(&mm->mmap_sem); - error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); - up_write(&mm->mmap_sem); - - if (file) - fput(file); - return error; -} - -asmlinkage long sys32_olduname(struct oldold_utsname __user * name) -{ - int err; - - if (!name) - return -EFAULT; - if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname))) - return -EFAULT; - - down_read(&uts_sem); - - err = __copy_to_user(&name->sysname,&utsname()->sysname, - __OLD_UTS_LEN); - err |= __put_user(0,name->sysname+__OLD_UTS_LEN); - err |= __copy_to_user(&name->nodename,&utsname()->nodename, - __OLD_UTS_LEN); - err |= __put_user(0,name->nodename+__OLD_UTS_LEN); - err |= __copy_to_user(&name->release,&utsname()->release, - __OLD_UTS_LEN); - err |= __put_user(0,name->release+__OLD_UTS_LEN); - err |= __copy_to_user(&name->version,&utsname()->version, - __OLD_UTS_LEN); - err |= __put_user(0,name->version+__OLD_UTS_LEN); - { - char *arch = "x86_64"; - if (personality(current->personality) == PER_LINUX32) - arch = "i686"; - - err |= __copy_to_user(&name->machine, arch, strlen(arch)+1); - } - - up_read(&uts_sem); - - err = err ? -EFAULT : 0; - - return err; -} - -long sys32_uname(struct old_utsname __user * name) -{ - int err; - if (!name) - return -EFAULT; - down_read(&uts_sem); - err = copy_to_user(name, utsname(), sizeof (*name)); - up_read(&uts_sem); - if (personality(current->personality) == PER_LINUX32) - err |= copy_to_user(&name->machine, "i686", 5); - return err?-EFAULT:0; -} - -long sys32_ustat(unsigned dev, struct ustat32 __user *u32p) -{ - struct ustat u; - mm_segment_t seg; - int ret; - - seg = get_fs(); - set_fs(KERNEL_DS); - ret = sys_ustat(dev, (struct ustat __user *)&u); - set_fs(seg); - if (ret >= 0) { - if (!access_ok(VERIFY_WRITE,u32p,sizeof(struct ustat32)) || - __put_user((__u32) u.f_tfree, &u32p->f_tfree) || - __put_user((__u32) u.f_tinode, &u32p->f_tfree) || - __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) || - __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack))) - ret = -EFAULT; - } - return ret; -} - -asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv, - compat_uptr_t __user *envp, struct pt_regs *regs) -{ - long error; - char * filename; - - filename = getname(name); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - return error; - error = compat_do_execve(filename, argv, envp, regs); - if (error == 0) { - task_lock(current); - current->ptrace &= ~PT_DTRACE; - task_unlock(current); - } - putname(filename); - return error; -} - -asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp, - struct pt_regs *regs) -{ - void __user *parent_tid = (void __user *)regs->rdx; - void __user *child_tid = (void __user *)regs->rdi; - if (!newsp) - newsp = regs->rsp; - return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid); -} - -/* - * Some system calls that need sign extended arguments. This could be done by a generic wrapper. - */ - -long sys32_lseek (unsigned int fd, int offset, unsigned int whence) -{ - return sys_lseek(fd, offset, whence); -} - -long sys32_kill(int pid, int sig) -{ - return sys_kill(pid, sig); -} - -long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high, - __u32 len_low, __u32 len_high, int advice) -{ - return sys_fadvise64_64(fd, - (((u64)offset_high)<<32) | offset_low, - (((u64)len_high)<<32) | len_low, - advice); -} - -long sys32_vm86_warning(void) -{ - struct task_struct *me = current; - static char lastcomm[sizeof(me->comm)]; - if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) { - compat_printk(KERN_INFO "%s: vm86 mode not supported on 64 bit kernel\n", - me->comm); - strncpy(lastcomm, me->comm, sizeof(lastcomm)); - } - return -ENOSYS; -} - -long sys32_lookup_dcookie(u32 addr_low, u32 addr_high, - char __user * buf, size_t len) -{ - return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len); -} - -asmlinkage ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi, size_t count) -{ - return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count); -} - -asmlinkage long sys32_sync_file_range(int fd, unsigned off_low, unsigned off_hi, - unsigned n_low, unsigned n_hi, int flags) -{ - return sys_sync_file_range(fd, - ((u64)off_hi << 32) | off_low, - ((u64)n_hi << 32) | n_low, flags); -} - -asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi, size_t len, - int advice) -{ - return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo, - len, advice); -} - -asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_lo, - unsigned offset_hi, unsigned len_lo, - unsigned len_hi) -{ - return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo, - ((u64)len_hi << 32) | len_lo); -} diff --git a/arch/x86_64/ia32/syscall32.c b/arch/x86_64/ia32/syscall32.c deleted file mode 100644 index 15013bac181..00000000000 --- a/arch/x86_64/ia32/syscall32.c +++ /dev/null @@ -1,83 +0,0 @@ -/* Copyright 2002,2003 Andi Kleen, SuSE Labs */ - -/* vsyscall handling for 32bit processes. Map a stub page into it - on demand because 32bit cannot reach the kernel's fixmaps */ - -#include <linux/mm.h> -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/gfp.h> -#include <linux/init.h> -#include <linux/stringify.h> -#include <linux/security.h> -#include <asm/proto.h> -#include <asm/tlbflush.h> -#include <asm/ia32_unistd.h> -#include <asm/vsyscall32.h> - -extern unsigned char syscall32_syscall[], syscall32_syscall_end[]; -extern unsigned char syscall32_sysenter[], syscall32_sysenter_end[]; -extern int sysctl_vsyscall32; - -static struct page *syscall32_pages[1]; -static int use_sysenter = -1; - -struct linux_binprm; - -/* Setup a VMA at program startup for the vsyscall page */ -int syscall32_setup_pages(struct linux_binprm *bprm, int exstack) -{ - struct mm_struct *mm = current->mm; - int ret; - - down_write(&mm->mmap_sem); - /* - * MAYWRITE to allow gdb to COW and set breakpoints - * - * Make sure the vDSO gets into every core dump. - * Dumping its contents makes post-mortem fully interpretable later - * without matching up the same kernel and hardware config to see - * what PC values meant. - */ - /* Could randomize here */ - ret = install_special_mapping(mm, VSYSCALL32_BASE, PAGE_SIZE, - VM_READ|VM_EXEC| - VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC| - VM_ALWAYSDUMP, - syscall32_pages); - up_write(&mm->mmap_sem); - return ret; -} - -static int __init init_syscall32(void) -{ - char *syscall32_page = (void *)get_zeroed_page(GFP_KERNEL); - if (!syscall32_page) - panic("Cannot allocate syscall32 page"); - syscall32_pages[0] = virt_to_page(syscall32_page); - if (use_sysenter > 0) { - memcpy(syscall32_page, syscall32_sysenter, - syscall32_sysenter_end - syscall32_sysenter); - } else { - memcpy(syscall32_page, syscall32_syscall, - syscall32_syscall_end - syscall32_syscall); - } - return 0; -} - -__initcall(init_syscall32); - -/* May not be __init: called during resume */ -void syscall32_cpu_init(void) -{ - if (use_sysenter < 0) - use_sysenter = (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL); - - /* Load these always in case some future AMD CPU supports - SYSENTER from compat mode too. */ - checking_wrmsrl(MSR_IA32_SYSENTER_CS, (u64)__KERNEL_CS); - checking_wrmsrl(MSR_IA32_SYSENTER_ESP, 0ULL); - checking_wrmsrl(MSR_IA32_SYSENTER_EIP, (u64)ia32_sysenter_target); - - wrmsrl(MSR_CSTAR, ia32_cstar_target); -} diff --git a/arch/x86_64/ia32/syscall32_syscall.S b/arch/x86_64/ia32/syscall32_syscall.S deleted file mode 100644 index 8f8271bdf13..00000000000 --- a/arch/x86_64/ia32/syscall32_syscall.S +++ /dev/null @@ -1,17 +0,0 @@ -/* 32bit VDSOs mapped into user space. */ - - .section ".init.data","aw" - - .globl syscall32_syscall - .globl syscall32_syscall_end - -syscall32_syscall: - .incbin "arch/x86_64/ia32/vsyscall-syscall.so" -syscall32_syscall_end: - - .globl syscall32_sysenter - .globl syscall32_sysenter_end - -syscall32_sysenter: - .incbin "arch/x86_64/ia32/vsyscall-sysenter.so" -syscall32_sysenter_end: diff --git a/arch/x86_64/ia32/tls32.c b/arch/x86_64/ia32/tls32.c deleted file mode 100644 index 1cc4340de3c..00000000000 --- a/arch/x86_64/ia32/tls32.c +++ /dev/null @@ -1,163 +0,0 @@ -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/user.h> - -#include <asm/uaccess.h> -#include <asm/desc.h> -#include <asm/system.h> -#include <asm/ldt.h> -#include <asm/processor.h> -#include <asm/proto.h> - -/* - * sys_alloc_thread_area: get a yet unused TLS descriptor index. - */ -static int get_free_idx(void) -{ - struct thread_struct *t = ¤t->thread; - int idx; - - for (idx = 0; idx < GDT_ENTRY_TLS_ENTRIES; idx++) - if (desc_empty((struct n_desc_struct *)(t->tls_array) + idx)) - return idx + GDT_ENTRY_TLS_MIN; - return -ESRCH; -} - -/* - * Set a given TLS descriptor: - * When you want addresses > 32bit use arch_prctl() - */ -int do_set_thread_area(struct thread_struct *t, struct user_desc __user *u_info) -{ - struct user_desc info; - struct n_desc_struct *desc; - int cpu, idx; - - if (copy_from_user(&info, u_info, sizeof(info))) - return -EFAULT; - - idx = info.entry_number; - - /* - * index -1 means the kernel should try to find and - * allocate an empty descriptor: - */ - if (idx == -1) { - idx = get_free_idx(); - if (idx < 0) - return idx; - if (put_user(idx, &u_info->entry_number)) - return -EFAULT; - } - - if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX) - return -EINVAL; - - desc = ((struct n_desc_struct *)t->tls_array) + idx - GDT_ENTRY_TLS_MIN; - - /* - * We must not get preempted while modifying the TLS. - */ - cpu = get_cpu(); - - if (LDT_empty(&info)) { - desc->a = 0; - desc->b = 0; - } else { - desc->a = LDT_entry_a(&info); - desc->b = LDT_entry_b(&info); - } - if (t == ¤t->thread) - load_TLS(t, cpu); - - put_cpu(); - return 0; -} - -asmlinkage long sys32_set_thread_area(struct user_desc __user *u_info) -{ - return do_set_thread_area(¤t->thread, u_info); -} - - -/* - * Get the current Thread-Local Storage area: - */ - -#define GET_BASE(desc) ( \ - (((desc)->a >> 16) & 0x0000ffff) | \ - (((desc)->b << 16) & 0x00ff0000) | \ - ( (desc)->b & 0xff000000) ) - -#define GET_LIMIT(desc) ( \ - ((desc)->a & 0x0ffff) | \ - ((desc)->b & 0xf0000) ) - -#define GET_32BIT(desc) (((desc)->b >> 22) & 1) -#define GET_CONTENTS(desc) (((desc)->b >> 10) & 3) -#define GET_WRITABLE(desc) (((desc)->b >> 9) & 1) -#define GET_LIMIT_PAGES(desc) (((desc)->b >> 23) & 1) -#define GET_PRESENT(desc) (((desc)->b >> 15) & 1) -#define GET_USEABLE(desc) (((desc)->b >> 20) & 1) -#define GET_LONGMODE(desc) (((desc)->b >> 21) & 1) - -int do_get_thread_area(struct thread_struct *t, struct user_desc __user *u_info) -{ - struct user_desc info; - struct n_desc_struct *desc; - int idx; - - if (get_user(idx, &u_info->entry_number)) - return -EFAULT; - if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX) - return -EINVAL; - - desc = ((struct n_desc_struct *)t->tls_array) + idx - GDT_ENTRY_TLS_MIN; - - memset(&info, 0, sizeof(struct user_desc)); - info.entry_number = idx; - info.base_addr = GET_BASE(desc); - info.limit = GET_LIMIT(desc); - info.seg_32bit = GET_32BIT(desc); - info.contents = GET_CONTENTS(desc); - info.read_exec_only = !GET_WRITABLE(desc); - info.limit_in_pages = GET_LIMIT_PAGES(desc); - info.seg_not_present = !GET_PRESENT(desc); - info.useable = GET_USEABLE(desc); - info.lm = GET_LONGMODE(desc); - - if (copy_to_user(u_info, &info, sizeof(info))) - return -EFAULT; - return 0; -} - -asmlinkage long sys32_get_thread_area(struct user_desc __user *u_info) -{ - return do_get_thread_area(¤t->thread, u_info); -} - - -int ia32_child_tls(struct task_struct *p, struct pt_regs *childregs) -{ - struct n_desc_struct *desc; - struct user_desc info; - struct user_desc __user *cp; - int idx; - - cp = (void __user *)childregs->rsi; - if (copy_from_user(&info, cp, sizeof(info))) - return -EFAULT; - if (LDT_empty(&info)) - return -EINVAL; - - idx = info.entry_number; - if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX) - return -EINVAL; - - desc = (struct n_desc_struct *)(p->thread.tls_array) + idx - GDT_ENTRY_TLS_MIN; - desc->a = LDT_entry_a(&info); - desc->b = LDT_entry_b(&info); - - return 0; -} diff --git a/arch/x86_64/ia32/vsyscall-sigreturn.S b/arch/x86_64/ia32/vsyscall-sigreturn.S deleted file mode 100644 index b383be00bae..00000000000 --- a/arch/x86_64/ia32/vsyscall-sigreturn.S +++ /dev/null @@ -1,143 +0,0 @@ -/* - * Common code for the sigreturn entry points on the vsyscall page. - * This code uses SYSCALL_ENTER_KERNEL (either syscall or int $0x80) - * to enter the kernel. - * This file is #include'd by vsyscall-*.S to define them after the - * vsyscall entry point. The addresses we get for these entry points - * by doing ".balign 32" must match in both versions of the page. - */ - - .code32 - .section .text.sigreturn,"ax" - .balign 32 - .globl __kernel_sigreturn - .type __kernel_sigreturn,@function -__kernel_sigreturn: -.LSTART_sigreturn: - popl %eax - movl $__NR_ia32_sigreturn, %eax - SYSCALL_ENTER_KERNEL -.LEND_sigreturn: - .size __kernel_sigreturn,.-.LSTART_sigreturn - - .section .text.rtsigreturn,"ax" - .balign 32 - .globl __kernel_rt_sigreturn - .type __kernel_rt_sigreturn,@function -__kernel_rt_sigreturn: -.LSTART_rt_sigreturn: - movl $__NR_ia32_rt_sigreturn, %eax - SYSCALL_ENTER_KERNEL -.LEND_rt_sigreturn: - .size __kernel_rt_sigreturn,.-.LSTART_rt_sigreturn - - .section .eh_frame,"a",@progbits -.LSTARTFRAMES: - .long .LENDCIES-.LSTARTCIES -.LSTARTCIES: - .long 0 /* CIE ID */ - .byte 1 /* Version number */ - .string "zRS" /* NUL-terminated augmentation string */ - .uleb128 1 /* Code alignment factor */ - .sleb128 -4 /* Data alignment factor */ - .byte 8 /* Return address register column */ - .uleb128 1 /* Augmentation value length */ - .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */ - .byte 0x0c /* DW_CFA_def_cfa */ - .uleb128 4 - .uleb128 4 - .byte 0x88 /* DW_CFA_offset, column 0x8 */ - .uleb128 1 - .align 4 -.LENDCIES: - - .long .LENDFDE2-.LSTARTFDE2 /* Length FDE */ -.LSTARTFDE2: - .long .LSTARTFDE2-.LSTARTFRAMES /* CIE pointer */ - /* HACK: The dwarf2 unwind routines will subtract 1 from the - return address to get an address in the middle of the - presumed call instruction. Since we didn't get here via - a call, we need to include the nop before the real start - to make up for it. */ - .long .LSTART_sigreturn-1-. /* PC-relative start address */ - .long .LEND_sigreturn-.LSTART_sigreturn+1 - .uleb128 0 /* Augmentation length */ - /* What follows are the instructions for the table generation. - We record the locations of each register saved. This is - complicated by the fact that the "CFA" is always assumed to - be the value of the stack pointer in the caller. This means - that we must define the CFA of this body of code to be the - saved value of the stack pointer in the sigcontext. Which - also means that there is no fixed relation to the other - saved registers, which means that we must use DW_CFA_expression - to compute their addresses. It also means that when we - adjust the stack with the popl, we have to do it all over again. */ - -#define do_cfa_expr(offset) \ - .byte 0x0f; /* DW_CFA_def_cfa_expression */ \ - .uleb128 1f-0f; /* length */ \ -0: .byte 0x74; /* DW_OP_breg4 */ \ - .sleb128 offset; /* offset */ \ - .byte 0x06; /* DW_OP_deref */ \ -1: - -#define do_expr(regno, offset) \ - .byte 0x10; /* DW_CFA_expression */ \ - .uleb128 regno; /* regno */ \ - .uleb128 1f-0f; /* length */ \ -0: .byte 0x74; /* DW_OP_breg4 */ \ - .sleb128 offset; /* offset */ \ -1: - - do_cfa_expr(IA32_SIGCONTEXT_esp+4) - do_expr(0, IA32_SIGCONTEXT_eax+4) - do_expr(1, IA32_SIGCONTEXT_ecx+4) - do_expr(2, IA32_SIGCONTEXT_edx+4) - do_expr(3, IA32_SIGCONTEXT_ebx+4) - do_expr(5, IA32_SIGCONTEXT_ebp+4) - do_expr(6, IA32_SIGCONTEXT_esi+4) - do_expr(7, IA32_SIGCONTEXT_edi+4) - do_expr(8, IA32_SIGCONTEXT_eip+4) - - .byte 0x42 /* DW_CFA_advance_loc 2 -- nop; popl eax. */ - - do_cfa_expr(IA32_SIGCONTEXT_esp) - do_expr(0, IA32_SIGCONTEXT_eax) - do_expr(1, IA32_SIGCONTEXT_ecx) - do_expr(2, IA32_SIGCONTEXT_edx) - do_expr(3, IA32_SIGCONTEXT_ebx) - do_expr(5, IA32_SIGCONTEXT_ebp) - do_expr(6, IA32_SIGCONTEXT_esi) - do_expr(7, IA32_SIGCONTEXT_edi) - do_expr(8, IA32_SIGCONTEXT_eip) - - .align 4 -.LENDFDE2: - - .long .LENDFDE3-.LSTARTFDE3 /* Length FDE */ -.LSTARTFDE3: - .long .LSTARTFDE3-.LSTARTFRAMES /* CIE pointer */ - /* HACK: See above wrt unwind library assumptions. */ - .long .LSTART_rt_sigreturn-1-. /* PC-relative start address */ - .long .LEND_rt_sigreturn-.LSTART_rt_sigreturn+1 - .uleb128 0 /* Augmentation */ - /* What follows are the instructions for the table generation. - We record the locations of each register saved. This is - slightly less complicated than the above, since we don't - modify the stack pointer in the process. */ - - do_cfa_expr(IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_esp) - do_expr(0, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_eax) - do_expr(1, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_ecx) - do_expr(2, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_edx) - do_expr(3, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_ebx) - do_expr(5, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_ebp) - do_expr(6, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_esi) - do_expr(7, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_edi) - do_expr(8, IA32_RT_SIGFRAME_sigcontext-4 + IA32_SIGCONTEXT_eip) - - .align 4 -.LENDFDE3: - -#include "../../x86/kernel/vsyscall-note_32.S" - diff --git a/arch/x86_64/ia32/vsyscall-syscall.S b/arch/x86_64/ia32/vsyscall-syscall.S deleted file mode 100644 index cf9ef678de3..00000000000 --- a/arch/x86_64/ia32/vsyscall-syscall.S +++ /dev/null @@ -1,69 +0,0 @@ -/* - * Code for the vsyscall page. This version uses the syscall instruction. - */ - -#include <asm/ia32_unistd.h> -#include <asm/asm-offsets.h> -#include <asm/segment.h> - - .code32 - .text - .section .text.vsyscall,"ax" - .globl __kernel_vsyscall - .type __kernel_vsyscall,@function -__kernel_vsyscall: -.LSTART_vsyscall: - push %ebp -.Lpush_ebp: - movl %ecx, %ebp - syscall - movl $__USER32_DS, %ecx - movl %ecx, %ss - movl %ebp, %ecx - popl %ebp -.Lpop_ebp: - ret -.LEND_vsyscall: - .size __kernel_vsyscall,.-.LSTART_vsyscall - - .section .eh_frame,"a",@progbits -.LSTARTFRAME: - .long .LENDCIE-.LSTARTCIE -.LSTARTCIE: - .long 0 /* CIE ID */ - .byte 1 /* Version number */ - .string "zR" /* NUL-terminated augmentation string */ - .uleb128 1 /* Code alignment factor */ - .sleb128 -4 /* Data alignment factor */ - .byte 8 /* Return address register column */ - .uleb128 1 /* Augmentation value length */ - .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */ - .byte 0x0c /* DW_CFA_def_cfa */ - .uleb128 4 - .uleb128 4 - .byte 0x88 /* DW_CFA_offset, column 0x8 */ - .uleb128 1 - .align 4 -.LENDCIE: - - .long .LENDFDE1-.LSTARTFDE1 /* Length FDE */ -.LSTARTFDE1: - .long .LSTARTFDE1-.LSTARTFRAME /* CIE pointer */ - .long .LSTART_vsyscall-. /* PC-relative start address */ - .long .LEND_vsyscall-.LSTART_vsyscall - .uleb128 0 /* Augmentation length */ - /* What follows are the instructions for the table generation. - We have to record all changes of the stack pointer. */ - .byte 0x40 + .Lpush_ebp-.LSTART_vsyscall /* DW_CFA_advance_loc */ - .byte 0x0e /* DW_CFA_def_cfa_offset */ - .uleb128 8 - .byte 0x85, 0x02 /* DW_CFA_offset %ebp -8 */ - .byte 0x40 + .Lpop_ebp-.Lpush_ebp /* DW_CFA_advance_loc */ - .byte 0xc5 /* DW_CFA_restore %ebp */ - .byte 0x0e /* DW_CFA_def_cfa_offset */ - .uleb128 4 - .align 4 -.LENDFDE1: - -#define SYSCALL_ENTER_KERNEL syscall -#include "vsyscall-sigreturn.S" diff --git a/arch/x86_64/ia32/vsyscall-sysenter.S b/arch/x86_64/ia32/vsyscall-sysenter.S deleted file mode 100644 index ae056e553d1..00000000000 --- a/arch/x86_64/ia32/vsyscall-sysenter.S +++ /dev/null @@ -1,95 +0,0 @@ -/* - * Code for the vsyscall page. This version uses the sysenter instruction. - */ - -#include <asm/ia32_unistd.h> -#include <asm/asm-offsets.h> - - .code32 - .text - .section .text.vsyscall,"ax" - .globl __kernel_vsyscall - .type __kernel_vsyscall,@function -__kernel_vsyscall: -.LSTART_vsyscall: - push %ecx -.Lpush_ecx: - push %edx -.Lpush_edx: - push %ebp -.Lenter_kernel: - movl %esp,%ebp - sysenter - .space 7,0x90 - jmp .Lenter_kernel - /* 16: System call normal return point is here! */ - pop %ebp -.Lpop_ebp: - pop %edx -.Lpop_edx: - pop %ecx -.Lpop_ecx: - ret -.LEND_vsyscall: - .size __kernel_vsyscall,.-.LSTART_vsyscall - - .section .eh_frame,"a",@progbits -.LSTARTFRAME: - .long .LENDCIE-.LSTARTCIE -.LSTARTCIE: - .long 0 /* CIE ID */ - .byte 1 /* Version number */ - .string "zR" /* NUL-terminated augmentation string */ - .uleb128 1 /* Code alignment factor */ - .sleb128 -4 /* Data alignment factor */ - .byte 8 /* Return address register column */ - .uleb128 1 /* Augmentation value length */ - .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */ - .byte 0x0c /* DW_CFA_def_cfa */ - .uleb128 4 - .uleb128 4 - .byte 0x88 /* DW_CFA_offset, column 0x8 */ - .uleb128 1 - .align 4 -.LENDCIE: - - .long .LENDFDE1-.LSTARTFDE1 /* Length FDE */ -.LSTARTFDE1: - .long .LSTARTFDE1-.LSTARTFRAME /* CIE pointer */ - .long .LSTART_vsyscall-. /* PC-relative start address */ - .long .LEND_vsyscall-.LSTART_vsyscall - .uleb128 0 /* Augmentation length */ - /* What follows are the instructions for the table generation. - We have to record all changes of the stack pointer. */ - .byte 0x04 /* DW_CFA_advance_loc4 */ - .long .Lpush_ecx-.LSTART_vsyscall - .byte 0x0e /* DW_CFA_def_cfa_offset */ - .byte 0x08 /* RA at offset 8 now */ - .byte 0x04 /* DW_CFA_advance_loc4 */ - .long .Lpush_edx-.Lpush_ecx - .byte 0x0e /* DW_CFA_def_cfa_offset */ - .byte 0x0c /* RA at offset 12 now */ - .byte 0x04 /* DW_CFA_advance_loc4 */ - .long .Lenter_kernel-.Lpush_edx - .byte 0x0e /* DW_CFA_def_cfa_offset */ - .byte 0x10 /* RA at offset 16 now */ - .byte 0x85, 0x04 /* DW_CFA_offset %ebp -16 */ - /* Finally the epilogue. */ - .byte 0x04 /* DW_CFA_advance_loc4 */ - .long .Lpop_ebp-.Lenter_kernel - .byte 0x0e /* DW_CFA_def_cfa_offset */ - .byte 0x12 /* RA at offset 12 now */ - .byte 0xc5 /* DW_CFA_restore %ebp */ - .byte 0x04 /* DW_CFA_advance_loc4 */ - .long .Lpop_edx-.Lpop_ebp - .byte 0x0e /* DW_CFA_def_cfa_offset */ - .byte 0x08 /* RA at offset 8 now */ - .byte 0x04 /* DW_CFA_advance_loc4 */ - .long .Lpop_ecx-.Lpop_edx - .byte 0x0e /* DW_CFA_def_cfa_offset */ - .byte 0x04 /* RA at offset 4 now */ - .align 4 -.LENDFDE1: - -#define SYSCALL_ENTER_KERNEL int $0x80 -#include "vsyscall-sigreturn.S" diff --git a/arch/x86_64/ia32/vsyscall.lds b/arch/x86_64/ia32/vsyscall.lds deleted file mode 100644 index 1dc86ff5bcb..00000000000 --- a/arch/x86_64/ia32/vsyscall.lds +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Linker script for vsyscall DSO. The vsyscall page is an ELF shared - * object prelinked to its virtual address. This script controls its layout. - */ - -/* This must match <asm/fixmap.h>. */ -VSYSCALL_BASE = 0xffffe000; - -SECTIONS -{ - . = VSYSCALL_BASE + 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) } - - /* This linker script is used both with -r and with -shared. - For the layouts to match, we need to skip more than enough - space for the dynamic symbol table et al. If this amount - is insufficient, ld -shared will barf. Just increase it here. */ - . = VSYSCALL_BASE + 0x400; - - .text.vsyscall : { *(.text.vsyscall) } :text =0x90909090 - - /* This is an 32bit object and we cannot easily get the offsets - into the 64bit kernel. Just hardcode them here. This assumes - that all the stubs don't need more than 0x100 bytes. */ - . = VSYSCALL_BASE + 0x500; - - .text.sigreturn : { *(.text.sigreturn) } :text =0x90909090 - - . = VSYSCALL_BASE + 0x600; - - .text.rtsigreturn : { *(.text.rtsigreturn) } :text =0x90909090 - - .note : { *(.note.*) } :text :note - .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr - .eh_frame : { KEEP (*(.eh_frame)) } :text - .dynamic : { *(.dynamic) } :text :dynamic - .useless : { - *(.got.plt) *(.got) - *(.data .data.* .gnu.linkonce.d.*) - *(.dynbss) - *(.bss .bss.* .gnu.linkonce.b.*) - } :text -} - -/* - * 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 FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */ - dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ - note PT_NOTE FLAGS(4); /* PF_R */ - eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */ -} - -/* - * This controls what symbols we export from the DSO. - */ -VERSION -{ - LINUX_2.5 { - global: - __kernel_vsyscall; - __kernel_sigreturn; - __kernel_rt_sigreturn; - - local: *; - }; -} - -/* The ELF entry point can be used to set the AT_SYSINFO value. */ -ENTRY(__kernel_vsyscall); |