diff options
Diffstat (limited to 'arch/um/os-Linux')
33 files changed, 59 insertions, 557 deletions
diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile index b33f4dfe7ae..dd764101e48 100644 --- a/arch/um/os-Linux/Makefile +++ b/arch/um/os-Linux/Makefile @@ -4,14 +4,14 @@ # obj-y = aio.o execvp.o file.o helper.o irq.o main.o mem.o process.o \ - registers.o sigio.o signal.o start_up.o time.o tty.o uaccess.o \ - umid.o tls.o user_syms.o util.o drivers/ sys-$(SUBARCH)/ skas/ + registers.o sigio.o signal.o start_up.o time.o tty.o \ + umid.o user_syms.o util.o drivers/ skas/ obj-$(CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA) += elf_aux.o USER_OBJS := $(user-objs-y) aio.o elf_aux.o execvp.o file.o helper.o irq.o \ main.o mem.o process.o registers.o sigio.o signal.o start_up.o time.o \ - tty.o tls.o uaccess.o umid.o util.o + tty.o umid.o util.o CFLAGS_user_syms.o += -DSUBARCH_$(SUBARCH) diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c index 57e3d46c989..c5d039e1ff3 100644 --- a/arch/um/os-Linux/aio.c +++ b/arch/um/os-Linux/aio.c @@ -11,10 +11,8 @@ #include <asm/unistd.h> #include "aio.h" #include "init.h" -#include "kern_constants.h" #include "kern_util.h" #include "os.h" -#include "user.h" struct aio_thread_req { enum aio_type type; diff --git a/arch/um/os-Linux/drivers/ethertap_user.c b/arch/um/os-Linux/drivers/ethertap_user.c index cc72cb2c1af..db3d6481375 100644 --- a/arch/um/os-Linux/drivers/ethertap_user.c +++ b/arch/um/os-Linux/drivers/ethertap_user.c @@ -13,11 +13,9 @@ #include <sys/socket.h> #include <sys/wait.h> #include "etap.h" -#include "kern_constants.h" #include "os.h" #include "net_user.h" #include "um_malloc.h" -#include "user.h" #define MAX_PACKET ETH_MAX_PACKET diff --git a/arch/um/os-Linux/drivers/tuntap_user.c b/arch/um/os-Linux/drivers/tuntap_user.c index 2448be03fd7..a2aacffdd90 100644 --- a/arch/um/os-Linux/drivers/tuntap_user.c +++ b/arch/um/os-Linux/drivers/tuntap_user.c @@ -13,11 +13,9 @@ #include <sys/socket.h> #include <sys/wait.h> #include <sys/uio.h> -#include "kern_constants.h" #include "kern_util.h" #include "os.h" #include "tuntap.h" -#include "user.h" static int tuntap_user_init(void *data, void *dev) { diff --git a/arch/um/os-Linux/elf_aux.c b/arch/um/os-Linux/elf_aux.c index 95332379938..d895271ad6f 100644 --- a/arch/um/os-Linux/elf_aux.c +++ b/arch/um/os-Linux/elf_aux.c @@ -12,7 +12,6 @@ #include "init.h" #include "elf_user.h" #include "mem_user.h" -#include <kern_constants.h> typedef Elf32_auxv_t elf_auxv_t; diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c index 140e587bc0a..b049a63bb74 100644 --- a/arch/um/os-Linux/file.c +++ b/arch/um/os-Linux/file.c @@ -13,9 +13,7 @@ #include <sys/socket.h> #include <sys/stat.h> #include <sys/un.h> -#include "kern_constants.h" #include "os.h" -#include "user.h" static void copy_stat(struct uml_stat *dst, const struct stat64 *src) { diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c index feff22d6467..cf26c4a9a43 100644 --- a/arch/um/os-Linux/helper.c +++ b/arch/um/os-Linux/helper.c @@ -10,11 +10,9 @@ #include <linux/limits.h> #include <sys/socket.h> #include <sys/wait.h> -#include "kern_constants.h" #include "kern_util.h" #include "os.h" #include "um_malloc.h" -#include "user.h" struct helper_data { void (*pre_exec)(void*); diff --git a/arch/um/os-Linux/internal.h b/arch/um/os-Linux/internal.h new file mode 100644 index 00000000000..2c3c3ecd8c0 --- /dev/null +++ b/arch/um/os-Linux/internal.h @@ -0,0 +1 @@ +void alarm_handler(int, mcontext_t *); diff --git a/arch/um/os-Linux/irq.c b/arch/um/os-Linux/irq.c index 0348b975e81..9a49908b576 100644 --- a/arch/um/os-Linux/irq.c +++ b/arch/um/os-Linux/irq.c @@ -9,11 +9,8 @@ #include <signal.h> #include <string.h> #include "irq_user.h" -#include "kern_constants.h" #include "os.h" -#include "process.h" #include "um_malloc.h" -#include "user.h" /* * Locked by irq_lock in arch/um/kernel/irq.c. Changed by os_create_pollfd diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c index 8471b817d94..7a86dd516eb 100644 --- a/arch/um/os-Linux/main.c +++ b/arch/um/os-Linux/main.c @@ -12,7 +12,6 @@ #include <sys/resource.h> #include "as-layout.h" #include "init.h" -#include "kern_constants.h" #include "kern_util.h" #include "os.h" #include "um_malloc.h" diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c index 62878cf1d33..8e421e1d6d3 100644 --- a/arch/um/os-Linux/mem.c +++ b/arch/um/os-Linux/mem.c @@ -14,9 +14,7 @@ #include <sys/mman.h> #include <sys/param.h> #include "init.h" -#include "kern_constants.h" #include "os.h" -#include "user.h" /* Modified by which_tmpdir, which is called during early boot */ static char *default_tmpdir = "/tmp"; diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c index 0c45dc8efb0..307f173e7f8 100644 --- a/arch/um/os-Linux/process.c +++ b/arch/um/os-Linux/process.c @@ -13,12 +13,9 @@ #include <sys/wait.h> #include <asm/unistd.h> #include "init.h" -#include "kern_constants.h" #include "longjmp.h" #include "os.h" -#include "process.h" #include "skas_ptrace.h" -#include "user.h" #define ARBITRARY_ADDR -1 #define FAILURE_PID -1 @@ -237,21 +234,13 @@ out: void init_new_thread_signals(void) { - set_handler(SIGSEGV, (__sighandler_t) sig_handler, SA_ONSTACK, - SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1); - set_handler(SIGTRAP, (__sighandler_t) sig_handler, SA_ONSTACK, - SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1); - set_handler(SIGFPE, (__sighandler_t) sig_handler, SA_ONSTACK, - SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1); - set_handler(SIGILL, (__sighandler_t) sig_handler, SA_ONSTACK, - SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1); - set_handler(SIGBUS, (__sighandler_t) sig_handler, SA_ONSTACK, - SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1); + set_handler(SIGSEGV); + set_handler(SIGTRAP); + set_handler(SIGFPE); + set_handler(SIGILL); + set_handler(SIGBUS); signal(SIGHUP, SIG_IGN); - - set_handler(SIGIO, (__sighandler_t) sig_handler, - SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, - SIGVTALRM, -1); + set_handler(SIGIO); signal(SIGWINCH, SIG_IGN); signal(SIGTERM, SIG_DFL); } diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c index 63d299df152..3c161218c67 100644 --- a/arch/um/os-Linux/sigio.c +++ b/arch/um/os-Linux/sigio.c @@ -11,14 +11,11 @@ #include <sched.h> #include <signal.h> #include <string.h> -#include "kern_constants.h" #include "kern_util.h" #include "init.h" #include "os.h" -#include "process.h" #include "sigio.h" #include "um_malloc.h" -#include "user.h" /* * Protected by sigio_lock(), also used by sigio_cleanup, which is an diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index 6ae180703a6..2d22f1fcd8e 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -12,13 +12,7 @@ #include "as-layout.h" #include "kern_util.h" #include "os.h" -#include "process.h" -#include "sysdep/barrier.h" -#include "sysdep/sigcontext.h" -#include "user.h" - -/* Copied from linux/compiler-gcc.h since we can't include it directly */ -#define barrier() __asm__ __volatile__("": : :"memory") +#include "sysdep/mcontext.h" void (*sig_info[NSIG])(int, struct uml_pt_regs *) = { [SIGTRAP] = relay_signal, @@ -30,7 +24,7 @@ void (*sig_info[NSIG])(int, struct uml_pt_regs *) = { [SIGIO] = sigio_handler, [SIGVTALRM] = timer_handler }; -static void sig_handler_common(int sig, struct sigcontext *sc) +static void sig_handler_common(int sig, mcontext_t *mc) { struct uml_pt_regs r; int save_errno = errno; @@ -38,8 +32,8 @@ static void sig_handler_common(int sig, struct sigcontext *sc) r.is_user = 0; if (sig == SIGSEGV) { /* For segfaults, we want the data from the sigcontext. */ - copy_sc(&r, sc); - GET_FAULTINFO_FROM_SC(r.faultinfo, sc); + get_regs_from_mc(&r, mc); + GET_FAULTINFO_FROM_MC(r.faultinfo, mc); } /* enable signals if sig isn't IRQ signal */ @@ -66,7 +60,7 @@ static void sig_handler_common(int sig, struct sigcontext *sc) static int signals_enabled; static unsigned int signals_pending; -void sig_handler(int sig, struct sigcontext *sc) +void sig_handler(int sig, mcontext_t *mc) { int enabled; @@ -78,23 +72,23 @@ void sig_handler(int sig, struct sigcontext *sc) block_signals(); - sig_handler_common(sig, sc); + sig_handler_common(sig, mc); set_signals(enabled); } -static void real_alarm_handler(struct sigcontext *sc) +static void real_alarm_handler(mcontext_t *mc) { struct uml_pt_regs regs; - if (sc != NULL) - copy_sc(®s, sc); + if (mc != NULL) + get_regs_from_mc(®s, mc); regs.is_user = 0; unblock_signals(); timer_handler(SIGVTALRM, ®s); } -void alarm_handler(int sig, struct sigcontext *sc) +void alarm_handler(int sig, mcontext_t *mc) { int enabled; @@ -106,14 +100,13 @@ void alarm_handler(int sig, struct sigcontext *sc) block_signals(); - real_alarm_handler(sc); + real_alarm_handler(mc); set_signals(enabled); } void timer_init(void) { - set_handler(SIGVTALRM, (__sighandler_t) alarm_handler, - SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, -1); + set_handler(SIGVTALRM); } void set_sigstack(void *sig_stack, int size) @@ -126,10 +119,23 @@ void set_sigstack(void *sig_stack, int size) panic("enabling signal stack failed, errno = %d\n", errno); } -static void (*handlers[_NSIG])(int sig, struct sigcontext *sc); +static void (*handlers[_NSIG])(int sig, mcontext_t *mc) = { + [SIGSEGV] = sig_handler, + [SIGBUS] = sig_handler, + [SIGILL] = sig_handler, + [SIGFPE] = sig_handler, + [SIGTRAP] = sig_handler, + + [SIGIO] = sig_handler, + [SIGWINCH] = sig_handler, + [SIGVTALRM] = alarm_handler +}; + -void handle_signal(int sig, struct sigcontext *sc) +static void hard_handler(int sig, siginfo_t *info, void *p) { + struct ucontext *uc = p; + mcontext_t *mc = &uc->uc_mcontext; unsigned long pending = 1UL << sig; do { @@ -155,7 +161,7 @@ void handle_signal(int sig, struct sigcontext *sc) while ((sig = ffs(pending)) != 0){ sig--; pending &= ~(1 << sig); - (*handlers[sig])(sig, sc); + (*handlers[sig])(sig, mc); } /* @@ -169,28 +175,26 @@ void handle_signal(int sig, struct sigcontext *sc) } while (pending); } -extern void hard_handler(int sig); - -void set_handler(int sig, void (*handler)(int), int flags, ...) +void set_handler(int sig) { struct sigaction action; - va_list ap; + int flags = SA_SIGINFO | SA_ONSTACK; sigset_t sig_mask; - int mask; - handlers[sig] = (void (*)(int, struct sigcontext *)) handler; - action.sa_handler = hard_handler; + action.sa_sigaction = hard_handler; + /* block irq ones */ sigemptyset(&action.sa_mask); - - va_start(ap, flags); - while ((mask = va_arg(ap, int)) != -1) - sigaddset(&action.sa_mask, mask); - va_end(ap); + sigaddset(&action.sa_mask, SIGVTALRM); + sigaddset(&action.sa_mask, SIGIO); + sigaddset(&action.sa_mask, SIGWINCH); if (sig == SIGSEGV) flags |= SA_NODEFER; + if (sigismember(&action.sa_mask, sig)) + flags |= SA_RESTART; /* if it's an irq signal */ + action.sa_flags = flags; action.sa_restorer = NULL; if (sigaction(sig, &action, NULL) < 0) diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c index e771398be5f..c0afff7af4b 100644 --- a/arch/um/os-Linux/skas/mem.c +++ b/arch/um/os-Linux/skas/mem.c @@ -9,7 +9,6 @@ #include <string.h> #include <sys/mman.h> #include "init.h" -#include "kern_constants.h" #include "as-layout.h" #include "mm_id.h" #include "os.h" @@ -17,7 +16,6 @@ #include "ptrace_user.h" #include "registers.h" #include "skas.h" -#include "user.h" #include "sysdep/ptrace.h" #include "sysdep/stub.h" diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index dee0e8cf8ad..cd65727854e 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -9,31 +9,23 @@ #include <errno.h> #include <string.h> #include <sys/mman.h> -#include <sys/ptrace.h> #include <sys/wait.h> #include <asm/unistd.h> #include "as-layout.h" -#include "chan_user.h" -#include "kern_constants.h" +#include "init.h" #include "kern_util.h" #include "mem.h" #include "os.h" -#include "process.h" #include "proc_mm.h" #include "ptrace_user.h" #include "registers.h" #include "skas.h" #include "skas_ptrace.h" -#include "user.h" #include "sysdep/stub.h" int is_skas_winch(int pid, int fd, void *data) { - if (pid != getpgrp()) - return 0; - - register_winch_irq(-1, fd, -1, data, 0); - return 1; + return pid == getpgrp(); } static int ptrace_dump_regs(int pid) @@ -169,7 +161,7 @@ static void handle_trap(int pid, struct uml_pt_regs *regs, if (!local_using_sysemu) { - err = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_NR_OFFSET, + err = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET, __NR_getpid); if (err < 0) { printk(UM_KERN_ERR "handle_trap - nullifying syscall " @@ -257,8 +249,8 @@ static int userspace_tramp(void *stack) set_sigstack((void *) STUB_DATA, UM_KERN_PAGE_SIZE); sigemptyset(&sa.sa_mask); - sa.sa_flags = SA_ONSTACK | SA_NODEFER; - sa.sa_handler = (void *) v; + sa.sa_flags = SA_ONSTACK | SA_NODEFER | SA_SIGINFO; + sa.sa_sigaction = (void *) v; sa.sa_restorer = NULL; if (sigaction(SIGSEGV, &sa, NULL) < 0) { printk(UM_KERN_ERR "userspace_tramp - setting SIGSEGV " @@ -661,8 +653,7 @@ int start_idle_thread(void *stack, jmp_buf *switch_buf) { int n; - set_handler(SIGWINCH, (__sighandler_t) sig_handler, - SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGVTALRM, -1); + set_handler(SIGWINCH); /* * Can't use UML_SETJMP or UML_LONGJMP here because they save diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c index 02ee9adff54..425162e22af 100644 --- a/arch/um/os-Linux/start_up.c +++ b/arch/um/os-Linux/start_up.c @@ -13,12 +13,10 @@ #include <signal.h> #include <string.h> #include <sys/mman.h> -#include <sys/ptrace.h> #include <sys/stat.h> #include <sys/wait.h> #include <asm/unistd.h> #include "init.h" -#include "kern_constants.h" #include "os.h" #include "mem_user.h" #include "ptrace_user.h" @@ -225,7 +223,7 @@ static void __init check_sysemu(void) goto fail; } - n = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_RET_OFFSET, os_getpid()); + n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_RET_OFFSET, os_getpid()); if (n < 0) { non_fatal("check_sysemu : failed to modify system call " "return"); @@ -261,7 +259,7 @@ static void __init check_sysemu(void) "doesn't singlestep"); goto fail; } - n = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_RET_OFFSET, + n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_RET_OFFSET, os_getpid()); if (n < 0) fatal_perror("check_sysemu : failed to modify " @@ -317,10 +315,10 @@ static void __init check_ptrace(void) fatal("check_ptrace : expected (SIGTRAP|0x80), " "got status = %d", status); - syscall = ptrace(PTRACE_PEEKUSR, pid, PT_SYSCALL_NR_OFFSET, + syscall = ptrace(PTRACE_PEEKUSER, pid, PT_SYSCALL_NR_OFFSET, 0); if (syscall == __NR_getpid) { - n = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_NR_OFFSET, + n = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET, __NR_getppid); if (n < 0) fatal_perror("check_ptrace : failed to modify " diff --git a/arch/um/os-Linux/sys-i386/Makefile b/arch/um/os-Linux/sys-i386/Makefile deleted file mode 100644 index b4bc6ac4f30..00000000000 --- a/arch/um/os-Linux/sys-i386/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -# -# Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) -# Licensed under the GPL -# - -obj-y = registers.o signal.o task_size.o tls.o - -USER_OBJS := $(obj-y) - -include arch/um/scripts/Makefile.rules diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c deleted file mode 100644 index 229f7a53d8d..00000000000 --- a/arch/um/os-Linux/sys-i386/registers.c +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright (C) 2004 PathScale, Inc - * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#include <errno.h> -#include <sys/ptrace.h> -#include <sys/user.h> -#include "kern_constants.h" -#include "longjmp.h" -#include "user.h" -#include "sysdep/ptrace_user.h" - -int save_fp_registers(int pid, unsigned long *fp_regs) -{ - if (ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0) - return -errno; - return 0; -} - -int restore_fp_registers(int pid, unsigned long *fp_regs) -{ - if (ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0) - return -errno; - return 0; -} - -int save_fpx_registers(int pid, unsigned long *fp_regs) -{ - if (ptrace(PTRACE_GETFPXREGS, pid, 0, fp_regs) < 0) - return -errno; - return 0; -} - -int restore_fpx_registers(int pid, unsigned long *fp_regs) -{ - if (ptrace(PTRACE_SETFPXREGS, pid, 0, fp_regs) < 0) - return -errno; - return 0; -} - -unsigned long get_thread_reg(int reg, jmp_buf *buf) -{ - switch (reg) { - case EIP: - return buf[0]->__eip; - case UESP: - return buf[0]->__esp; - case EBP: - return buf[0]->__ebp; - default: - printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n", - reg); - return 0; - } -} - -int have_fpx_regs = 1; - -int get_fp_registers(int pid, unsigned long *regs) -{ - if (have_fpx_regs) - return save_fpx_registers(pid, regs); - else - return save_fp_registers(pid, regs); -} - -int put_fp_registers(int pid, unsigned long *regs) -{ - if (have_fpx_regs) - return restore_fpx_registers(pid, regs); - else - return restore_fp_registers(pid, regs); -} - -void arch_init_registers(int pid) -{ - struct user_fpxregs_struct fpx_regs; - int err; - - err = ptrace(PTRACE_GETFPXREGS, pid, 0, &fpx_regs); - if (!err) - return; - - if (errno != EIO) - panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d", - errno); - - have_fpx_regs = 0; -} diff --git a/arch/um/os-Linux/sys-i386/signal.c b/arch/um/os-Linux/sys-i386/signal.c deleted file mode 100644 index f311609f93d..00000000000 --- a/arch/um/os-Linux/sys-i386/signal.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * Copyright (C) 2006 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#include <signal.h> - -extern void handle_signal(int sig, struct sigcontext *sc); - -void hard_handler(int sig) -{ - handle_signal(sig, (struct sigcontext *) (&sig + 1)); -} diff --git a/arch/um/os-Linux/sys-i386/task_size.c b/arch/um/os-Linux/sys-i386/task_size.c deleted file mode 100644 index be04c1e183b..00000000000 --- a/arch/um/os-Linux/sys-i386/task_size.c +++ /dev/null @@ -1,139 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <signal.h> -#include <sys/mman.h> -#include "longjmp.h" -#include "kern_constants.h" - -static jmp_buf buf; - -static void segfault(int sig) -{ - longjmp(buf, 1); -} - -static int page_ok(unsigned long page) -{ - unsigned long *address = (unsigned long *) (page << UM_KERN_PAGE_SHIFT); - unsigned long n = ~0UL; - void *mapped = NULL; - int ok = 0; - - /* - * First see if the page is readable. If it is, it may still - * be a VDSO, so we go on to see if it's writable. If not - * then try mapping memory there. If that fails, then we're - * still in the kernel area. As a sanity check, we'll fail if - * the mmap succeeds, but gives us an address different from - * what we wanted. - */ - if (setjmp(buf) == 0) - n = *address; - else { - mapped = mmap(address, UM_KERN_PAGE_SIZE, - PROT_READ | PROT_WRITE, - MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - if (mapped == MAP_FAILED) - return 0; - if (mapped != address) - goto out; - } - - /* - * Now, is it writeable? If so, then we're in user address - * space. If not, then try mprotecting it and try the write - * again. - */ - if (setjmp(buf) == 0) { - *address = n; - ok = 1; - goto out; - } else if (mprotect(address, UM_KERN_PAGE_SIZE, - PROT_READ | PROT_WRITE) != 0) - goto out; - - if (setjmp(buf) == 0) { - *address = n; - ok = 1; - } - - out: - if (mapped != NULL) - munmap(mapped, UM_KERN_PAGE_SIZE); - return ok; -} - -unsigned long os_get_top_address(void) -{ - struct sigaction sa, old; - unsigned long bottom = 0; - /* - * A 32-bit UML on a 64-bit host gets confused about the VDSO at - * 0xffffe000. It is mapped, is readable, can be reprotected writeable - * and written. However, exec discovers later that it can't be - * unmapped. So, just set the highest address to be checked to just - * below it. This might waste some address space on 4G/4G 32-bit - * hosts, but shouldn't hurt otherwise. - */ - unsigned long top = 0xffffd000 >> UM_KERN_PAGE_SHIFT; - unsigned long test, original; - - printf("Locating the bottom of the address space ... "); - fflush(stdout); - - /* - * We're going to be longjmping out of the signal handler, so - * SA_DEFER needs to be set. - */ - sa.sa_handler = segfault; - sigemptyset(&sa.sa_mask); - sa.sa_flags = SA_NODEFER; - if (sigaction(SIGSEGV, &sa, &old)) { - perror("os_get_top_address"); - exit(1); - } - - /* Manually scan the address space, bottom-up, until we find - * the first valid page (or run out of them). - */ - for (bottom = 0; bottom < top; bottom++) { - if (page_ok(bottom)) - break; - } - - /* If we've got this far, we ran out of pages. */ - if (bottom == top) { - fprintf(stderr, "Unable to determine bottom of address " - "space.\n"); - exit(1); - } - - printf("0x%x\n", bottom << UM_KERN_PAGE_SHIFT); - printf("Locating the top of the address space ... "); - fflush(stdout); - - original = bottom; - - /* This could happen with a 4G/4G split */ - if (page_ok(top)) - goto out; - - do { - test = bottom + (top - bottom) / 2; - if (page_ok(test)) - bottom = test; - else - top = test; - } while (top - bottom > 1); - -out: - /* Restore the old SIGSEGV handling */ - if (sigaction(SIGSEGV, &old, NULL)) { - perror("os_get_top_address"); - exit(1); - } - top <<= UM_KERN_PAGE_SHIFT; - printf("0x%x\n", top); - - return top; -} diff --git a/arch/um/os-Linux/sys-i386/tls.c b/arch/um/os-Linux/sys-i386/tls.c deleted file mode 100644 index 32ed41ec1a3..00000000000 --- a/arch/um/os-Linux/sys-i386/tls.c +++ /dev/null @@ -1,36 +0,0 @@ -#include <errno.h> -#include <linux/unistd.h> - -#include <sys/syscall.h> -#include <unistd.h> - -#include "sysdep/tls.h" -#include "user.h" - -/* Checks whether host supports TLS, and sets *tls_min according to the value - * valid on the host. - * i386 host have it == 6; x86_64 host have it == 12, for i386 emulation. */ -void check_host_supports_tls(int *supports_tls, int *tls_min) { - /* Values for x86 and x86_64.*/ - int val[] = {GDT_ENTRY_TLS_MIN_I386, GDT_ENTRY_TLS_MIN_X86_64}; - int i; - - for (i = 0; i < ARRAY_SIZE(val); i++) { - user_desc_t info; - info.entry_number = val[i]; - - if (syscall(__NR_get_thread_area, &info) == 0) { - *tls_min = val[i]; - *supports_tls = 1; - return; - } else { - if (errno == EINVAL) - continue; - else if (errno == ENOSYS) - *supports_tls = 0; - return; - } - } - - *supports_tls = 0; -} diff --git a/arch/um/os-Linux/sys-x86_64/Makefile b/arch/um/os-Linux/sys-x86_64/Makefile deleted file mode 100644 index a44a47f8f57..00000000000 --- a/arch/um/os-Linux/sys-x86_64/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -# -# Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) -# Licensed under the GPL -# - -obj-y = registers.o prctl.o signal.o task_size.o - -USER_OBJS := $(obj-y) - -include arch/um/scripts/Makefile.rules diff --git a/arch/um/os-Linux/sys-x86_64/prctl.c b/arch/um/os-Linux/sys-x86_64/prctl.c deleted file mode 100644 index 9d34eddb517..00000000000 --- a/arch/um/os-Linux/sys-x86_64/prctl.c +++ /dev/null @@ -1,12 +0,0 @@ -/* - * Copyright (C) 2007 Jeff Dike (jdike@{addtoit.com,linux.intel.com}) - * Licensed under the GPL - */ - -#include <sys/ptrace.h> -#include <linux/ptrace.h> - -int os_arch_prctl(int pid, int code, unsigned long *addr) -{ - return ptrace(PTRACE_ARCH_PRCTL, pid, (unsigned long) addr, code); -} diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c deleted file mode 100644 index 594d97ad02b..00000000000 --- a/arch/um/os-Linux/sys-x86_64/registers.c +++ /dev/null @@ -1,52 +0,0 @@ -/* - * Copyright (C) 2006 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#include <errno.h> -#include <sys/ptrace.h> -#define __FRAME_OFFSETS -#include <asm/ptrace.h> -#include "kern_constants.h" -#include "longjmp.h" -#include "user.h" - -int save_fp_registers(int pid, unsigned long *fp_regs) -{ - if (ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0) - return -errno; - return 0; -} - -int restore_fp_registers(int pid, unsigned long *fp_regs) -{ - if (ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0) - return -errno; - return 0; -} - -unsigned long get_thread_reg(int reg, jmp_buf *buf) -{ - switch (reg) { - case RIP: - return buf[0]->__rip; - case RSP: - return buf[0]->__rsp; - case RBP: - return buf[0]->__rbp; - default: - printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n", - reg); - return 0; - } -} - -int get_fp_registers(int pid, unsigned long *regs) -{ - return save_fp_registers(pid, regs); -} - -int put_fp_registers(int pid, unsigned long *regs) -{ - return restore_fp_registers(pid, regs); -} diff --git a/arch/um/os-Linux/sys-x86_64/signal.c b/arch/um/os-Linux/sys-x86_64/signal.c deleted file mode 100644 index 82a388822cd..00000000000 --- a/arch/um/os-Linux/sys-x86_64/signal.c +++ /dev/null @@ -1,16 +0,0 @@ -/* - * Copyright (C) 2006 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#include <signal.h> - -extern void handle_signal(int sig, struct sigcontext *sc); - -void hard_handler(int sig) -{ - struct ucontext *uc; - asm("movq %%rdx, %0" : "=r" (uc)); - - handle_signal(sig, (struct sigcontext *) &uc->uc_mcontext); -} diff --git a/arch/um/os-Linux/sys-x86_64/task_size.c b/arch/um/os-Linux/sys-x86_64/task_size.c deleted file mode 100644 index 26a0dd1f349..00000000000 --- a/arch/um/os-Linux/sys-x86_64/task_size.c +++ /dev/null @@ -1,5 +0,0 @@ -unsigned long os_get_top_address(unsigned long shift) -{ - /* The old value of CONFIG_TOP_ADDR */ - return 0x7fc0000000; -} diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c index 6e3359d6a83..910499d76a6 100644 --- a/arch/um/os-Linux/time.c +++ b/arch/um/os-Linux/time.c @@ -8,11 +8,9 @@ #include <signal.h> #include <time.h> #include <sys/time.h> -#include "kern_constants.h" #include "kern_util.h" #include "os.h" -#include "process.h" -#include "user.h" +#include "internal.h" int set_interval(void) { diff --git a/arch/um/os-Linux/tls.c b/arch/um/os-Linux/tls.c deleted file mode 100644 index 73277801ef1..00000000000 --- a/arch/um/os-Linux/tls.c +++ /dev/null @@ -1,35 +0,0 @@ -#include <errno.h> -#include <sys/ptrace.h> -#include "sysdep/tls.h" - -/* TLS support - we basically rely on the host's one.*/ - -#ifndef PTRACE_GET_THREAD_AREA -#define PTRACE_GET_THREAD_AREA 25 -#endif - -#ifndef PTRACE_SET_THREAD_AREA -#define PTRACE_SET_THREAD_AREA 26 -#endif - -int os_set_thread_area(user_desc_t *info, int pid) -{ - int ret; - - ret = ptrace(PTRACE_SET_THREAD_AREA, pid, info->entry_number, - (unsigned long) info); - if (ret < 0) - ret = -errno; - return ret; -} - -int os_get_thread_area(user_desc_t *info, int pid) -{ - int ret; - - ret = ptrace(PTRACE_GET_THREAD_AREA, pid, info->entry_number, - (unsigned long) info); - if (ret < 0) - ret = -errno; - return ret; -} diff --git a/arch/um/os-Linux/tty.c b/arch/um/os-Linux/tty.c index b09ff66a77e..dd12b99dcb5 100644 --- a/arch/um/os-Linux/tty.c +++ b/arch/um/os-Linux/tty.c @@ -7,10 +7,8 @@ #include <unistd.h> #include <errno.h> #include <fcntl.h> -#include "kern_constants.h" #include "kern_util.h" #include "os.h" -#include "user.h" struct grantpt_info { int fd; diff --git a/arch/um/os-Linux/uaccess.c b/arch/um/os-Linux/uaccess.c deleted file mode 100644 index 087ed74ffca..00000000000 --- a/arch/um/os-Linux/uaccess.c +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk) - * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#include <stddef.h> -#include "longjmp.h" - -unsigned long __do_user_copy(void *to, const void *from, int n, - void **fault_addr, jmp_buf **fault_catcher, - void (*op)(void *to, const void *from, - int n), int *faulted_out) -{ - unsigned long *faddrp = (unsigned long *) fault_addr, ret; - - jmp_buf jbuf; - *fault_catcher = &jbuf; - if (UML_SETJMP(&jbuf) == 0) { - (*op)(to, from, n); - ret = 0; - *faulted_out = 0; - } - else { - ret = *faddrp; - *faulted_out = 1; - } - *fault_addr = NULL; - *fault_catcher = NULL; - return ret; -} - diff --git a/arch/um/os-Linux/umid.c b/arch/um/os-Linux/umid.c index a27defb8188..4832eb519f8 100644 --- a/arch/um/os-Linux/umid.c +++ b/arch/um/os-Linux/umid.c @@ -13,9 +13,7 @@ #include <unistd.h> #include <sys/stat.h> #include "init.h" -#include "kern_constants.h" #include "os.h" -#include "user.h" #define UML_DIR "~/.uml/" diff --git a/arch/um/os-Linux/util.c b/arch/um/os-Linux/util.c index 5803b188767..9e3b43bb84c 100644 --- a/arch/um/os-Linux/util.c +++ b/arch/um/os-Linux/util.c @@ -13,9 +13,7 @@ #include <wait.h> #include <sys/mman.h> #include <sys/utsname.h> -#include "kern_constants.h" #include "os.h" -#include "user.h" void stack_protections(unsigned long address) { |