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Commit 0672b227 authored by Linus Torvalds's avatar Linus Torvalds
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Merge http://uml.bkbits.net/skas-2.5 

into home.transmeta.com:/home/torvalds/v2.5/linux
parents df2649b4 ab5bb6ab
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Showing with 6646 additions and 2452 deletions
arch/um/Kconfig
View file @ 0672b227
......@@ -30,6 +30,13 @@ config RWSEM_GENERIC_SPINLOCK
bool
default y
config MODE_TT
bool
default y
config MODE_SKAS
bool
default y
menu "Code maturity level options"
......
arch/um/Makefile
View file @ 0672b227
#
# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
# Licensed under the GPL
#
ARCH_DIR = arch/um
OS := $(shell uname -s)
......@@ -11,37 +16,31 @@ include/linux/version.h: arch/$(ARCH)/Makefile
# EXTRAVERSION...
MODLIB := $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
MAKEBOOT = $(MAKE) -C $(ARCH_DIR)/boot
ifeq ($(CONFIG_DEBUGSYM),y)
DEBUG = -g
CFLAGS := $(subst -fomit-frame-pointer,,$(CFLAGS))
endif
ifeq ($(CONFIG_GCOV),y)
CFLAGS += -fprofile-arcs -ftest-coverage
endif
ifeq ($(CONFIG_GPROF), y)
PROFILE += -pg -DPROFILING
LINK_PROFILE = $(PROFILE) -Wl,--wrap,__monstartup
endif
CFLAGS-$(CONFIG_DEBUGSYM) += -g
CFLAGS-$(CONFIG_GCOV) += -fprofile-arcs -ftest-coverage
CFLAGS-$(CONFIG_GPROF) += $(PROFILE)
LINK-$(CONFIG_GPROF) += $(PROFILE) -Wl,--wrap,__monstartup
core-y += $(ARCH_DIR)/kernel/ \
$(ARCH_DIR)/drivers/ \
$(ARCH_DIR)/sys-$(SUBARCH)/
core-$(CONFIG_PT_PROXY) += $(ARCH_DIR)/ptproxy/
ARCH_INCLUDE = $(TOPDIR)/$(ARCH_DIR)/include
ARCH_INCLUDE = -I$(ARCH_DIR)/include
MODE_INCLUDE = -I$(ARCH_DIR)/kernel/tt/include \
-I$(ARCH_DIR)/kernel/skas/include
# -Derrno=kernel_errno - This turns all kernel references to errno into
# kernel_errno to separate them from the libc errno. This allows -fno-common
# in CFLAGS. Otherwise, it would cause ld to complain about the two different
# errnos.
CFLAGS += $(DEBUG) $(PROFILE) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
-D_LARGEFILE64_SOURCE -I$(ARCH_INCLUDE) -Derrno=kernel_errno
CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
-D_LARGEFILE64_SOURCE $(ARCH_INCLUDE) -Derrno=kernel_errno \
$(MODE_INCLUDE)
LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
......@@ -51,10 +50,16 @@ SYMLINK_HEADERS = include/asm-um/archparam.h include/asm-um/system.h \
include/asm-um/sigcontext.h include/asm-um/processor.h \
include/asm-um/ptrace.h include/asm-um/arch-signal.h
ARCH_SYMLINKS = include/asm-um/arch arch/um/include/sysdep arch/um/os \
$(SYMLINK_HEADERS)
ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \
$(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h
ifeq ($(CONFIG_MODE_SKAS), y)
GEN_HEADERS = $(ARCH_DIR)/kernel/skas/include/skas_ptregs.h
GEN_HEADERS = $(ARCH_DIR)/include/task.h
$(SYS_HEADERS) : $(ARCH_DIR)/kernel/skas/include/skas_ptregs.h
endif
GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h
include $(ARCH_DIR)/Makefile-$(SUBARCH)
include $(ARCH_DIR)/Makefile-os-$(OS)
......@@ -62,9 +67,9 @@ include $(ARCH_DIR)/Makefile-os-$(OS)
$(ARCH_DIR)/vmlinux.lds.S :
touch $@
prepare: $(ARCH_SYMLINKS) $(GEN_HEADERS)
prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS)
LDFLAGS_vmlinux = -r $(ARCH_DIR)/main.o
LDFLAGS_vmlinux = -r
vmlinux: $(ARCH_DIR)/main.o
......@@ -74,18 +79,21 @@ $(ARCH_DIR)/uml.lds.s : $(ARCH_DIR)/uml.lds.S scripts FORCE
AFLAGS_uml.lds.o = -U$(SUBARCH) -DSTART=$$(($(TOP_ADDR) - $(SIZE))) \
-DELF_ARCH=$(ELF_ARCH) -DELF_FORMAT=\"$(ELF_FORMAT)\" -P -C -Uum
linux: arch/um/uml.lds.s vmlinux
$(CC) -Wl,-T,arch/um/uml.lds.s -o $@ $(LINK_PROFILE) \
$(LINK_WRAPS) -static vmlinux -L/usr/lib -lutil
linux: $(ARCH_DIR)/uml.lds.s vmlinux
$(CC) -Wl,-T,$(ARCH_DIR)/uml.lds.s -static $(LINK-y) $(LINK_WRAPS) \
-o linux $(ARCH_DIR)/main.o vmlinux -L/usr/lib -lutil
USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
USER_CFLAGS := $(patsubst -Derrno=kernel_errno,,$(USER_CFLAGS))
USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) -I$(ARCH_INCLUDE)
USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
$(MODE_INCLUDE)
# To get a definition of F_SETSIG
USER_CFLAGS += -D_GNU_SOURCE
CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/link.ld $(GEN_HEADERS)
$(ARCH_DIR)/main.o: $(ARCH_DIR)/main.c
$(CC) $(USER_CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $<
......@@ -106,7 +114,6 @@ archclean: sysclean
find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
-o -name '*.gcov' \) -type f -print | xargs rm -f
rm -f linux x.i gmon.out $(ARCH_DIR)/link.ld $(GEN_HEADERS)
@$(MAKEBOOT) clean
archdep:
for d in $(ARCH_SUBDIRS); do $(MAKE) -C $$d fastdep; done
......@@ -119,18 +126,28 @@ $(SYMLINK_HEADERS):
include/asm-um/arch:
cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
arch/um/include/sysdep:
cd $(TOPDIR)/arch/um/include && ln -sf sysdep-$(SUBARCH) sysdep
$(ARCH_DIR)/include/sysdep:
cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
arch/um/os:
$(ARCH_DIR)/os:
cd $(ARCH_DIR) && ln -sf os-$(OS) os
$(ARCH_DIR)/include/uml-config.h :
ln -sf $(TOPDIR)/include/linux/autoconf.h $@
$(ARCH_DIR)/include/task.h : $(ARCH_DIR)/util/mk_task
$< > $@
$(ARCH_DIR)/util/mk_task : $(ARCH_DIR)/util FORCE ;
$(ARCH_DIR)/include/kern_constants.h : $(ARCH_DIR)/util/mk_constants
$< > $@
$(ARCH_DIR)/util/mk_task : $(ARCH_DIR)/kernel/skas/include/skas_ptregs.h \
$(ARCH_DIR)/util FORCE ;
$(ARCH_DIR)/util: FORCE
@$(call descend,$@,)
$(ARCH_DIR)/kernel/skas/include/skas_ptregs.h :
$(MAKE) -C $(ARCH_DIR)/kernel/skas include/skas_ptregs.h
export SUBARCH USER_CFLAGS OS
arch/um/Makefile-i386
View file @ 0672b227
......@@ -21,13 +21,13 @@ prepare: $(SYS_HEADERS)
$(SYS_DIR)/sc.h: $(SYS_UTIL_DIR)/mk_sc
$< > $@
$(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread
$(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread
$< > $@
$(SYS_UTIL_DIR)/mk_sc: FORCE ;
@$(call descend,$(SYS_UTIL_DIR),$@)
$(SYS_UTIL_DIR)/mk_thread: $(ARCH_SYMLINKS) FORCE ;
$(SYS_UTIL_DIR)/mk_thread: $(ARCH_SYMLINKS) $(GEN_HEADERS) FORCE ;
@$(call descend,$(SYS_UTIL_DIR),$@)
$(SYS_UTIL_DIR): include/asm FORCE
......
arch/um/drivers/chan_user.c
View file @ 0672b227
......@@ -19,6 +19,8 @@
#include "user.h"
#include "helper.h"
#include "os.h"
#include "choose-mode.h"
#include "mode.h"
void generic_close(int fd, void *unused)
{
......@@ -144,32 +146,6 @@ static int winch_thread(void *arg)
}
}
static int tracer_winch[2];
static void tracer_winch_handler(int sig)
{
char c = 1;
if(write(tracer_winch[1], &c, sizeof(c)) != sizeof(c))
printk("tracer_winch_handler - write failed, errno = %d\n",
errno);
}
/* Called only by the tracing thread during initialization */
void setup_tracer_winch(void)
{
int err;
err = os_pipe(tracer_winch, 1, 1);
if(err){
printk("setup_tracer_winch : os_pipe failed, errno = %d\n",
-err);
return;
}
signal(SIGWINCH, tracer_winch_handler);
}
static int winch_tramp(int fd, void *device_data, int *fd_out)
{
struct winch_data data;
......@@ -212,9 +188,8 @@ void register_winch(int fd, void *device_data)
if(!isatty(fd)) return;
pid = tcgetpgrp(fd);
if(pid == tracing_pid)
register_winch_irq(tracer_winch[0], fd, -1, device_data);
else if(pid == -1){
if(!CHOOSE_MODE(is_tracer_winch(pid, fd, device_data), 0) &&
(pid == -1)){
thread = winch_tramp(fd, device_data, &thread_fd);
if(fd != -1){
register_winch_irq(thread_fd, fd, thread, device_data);
......
arch/um/drivers/line.c
View file @ 0672b227
......@@ -89,15 +89,26 @@ static int flush_buffer(struct line *line)
return(line->head == line->tail);
}
int line_write(struct line *lines, struct tty_struct *tty, const char *buf,
int len)
int line_write(struct line *lines, struct tty_struct *tty, int from_user,
const char *buf, int len)
{
struct line *line;
char *new;
unsigned long flags;
int n, err, i;
if(tty->stopped) return 0;
if(from_user){
new = kmalloc(len, GFP_KERNEL);
if(new == NULL)
return(0);
n = copy_from_user(new, buf, len);
if(n == len)
return(-EFAULT);
buf = new;
}
i = minor(tty->device) - tty->driver.minor_start;
line = &lines[i];
......@@ -522,7 +533,7 @@ static void winch_cleanup(void)
list_for_each(ele, &winch_handlers){
winch = list_entry(ele, struct winch, list);
close(winch->fd);
if(winch->pid != -1) os_kill_process(winch->pid);
if(winch->pid != -1) os_kill_process(winch->pid, 0);
}
}
......
arch/um/drivers/port_kern.c
View file @ 0672b227
......@@ -99,14 +99,13 @@ static int port_accept(struct port_list *port)
}
list_add(&conn->list, &port->pending);
ret = 1;
goto out;
return(1);
out_free:
kfree(conn);
out_close:
os_close_file(fd);
if(pid != -1) os_kill_process(pid);
if(pid != -1) os_kill_process(pid, 0);
out:
return(ret);
}
......@@ -210,9 +209,9 @@ void port_remove_dev(void *d)
struct port_dev *dev = d;
if(dev->helper_pid != -1)
os_kill_process(dev->helper_pid);
os_kill_process(dev->helper_pid, 0);
if(dev->telnetd_pid != -1)
os_kill_process(dev->telnetd_pid);
os_kill_process(dev->telnetd_pid, 0);
dev->helper_pid = -1;
}
......@@ -275,8 +274,8 @@ void port_kern_free(void *d)
{
struct port_dev *dev = d;
if(dev->helper_pid != -1) os_kill_process(dev->telnetd_pid);
if(dev->telnetd_pid != -1) os_kill_process(dev->telnetd_pid);
if(dev->helper_pid != -1) os_kill_process(dev->helper_pid, 0);
if(dev->telnetd_pid != -1) os_kill_process(dev->telnetd_pid, 0);
kfree(dev);
}
......
arch/um/drivers/pty.c
View file @ 0672b227
......@@ -111,7 +111,7 @@ int pty_open(int input, int output, int primary, void *d, char **dev_out)
if(fd < 0) return(-errno);
info.fd = fd;
tracing_cb(grantpt_cb, &info);
initial_thread_cb(grantpt_cb, &info);
unlockpt(fd);
if(data->raw) raw(fd, 0);
......
arch/um/drivers/ssl.c
View file @ 0672b227
......@@ -113,12 +113,12 @@ static void ssl_close(struct tty_struct *tty, struct file * filp)
static int ssl_write(struct tty_struct * tty, int from_user,
const unsigned char *buf, int count)
{
return(line_write(serial_lines, tty, buf, count));
return(line_write(serial_lines, tty, from_user, buf, count));
}
static void ssl_put_char(struct tty_struct *tty, unsigned char ch)
{
line_write(serial_lines, tty, &ch, sizeof(ch));
line_write(serial_lines, tty, 0, &ch, sizeof(ch));
}
static void ssl_flush_chars(struct tty_struct *tty)
......
arch/um/drivers/stdio_console.c
View file @ 0672b227
......@@ -148,7 +148,7 @@ static void con_close(struct tty_struct *tty, struct file *filp)
static int con_write(struct tty_struct *tty, int from_user,
const unsigned char *buf, int count)
{
return(line_write(vts, tty, buf, count));
return(line_write(vts, tty, from_user, buf, count));
}
static void set_termios(struct tty_struct *tty, struct termios * old)
......
arch/um/include/chan_user.h
View file @ 0672b227
......@@ -44,7 +44,6 @@ extern void generic_free(void *data);
extern void register_winch(int fd, void *device_data);
extern void register_winch_irq(int fd, int tty_fd, int pid, void *line);
extern void setup_tracer_winch(void);
#define __channel_help(fn, prefix) \
__uml_help(fn, prefix "[0-9]*=<channel description>\n" \
......
arch/um/include/choose-mode.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __CHOOSE_MODE_H__
#define __CHOOSE_MODE_H__
#include "uml-config.h"
#if defined(CONFIG_MODE_TT) && defined(CONFIG_MODE_SKAS)
#define CHOOSE_MODE(tt, skas) (mode_tt ? (tt) : (skas))
#elif defined(CONFIG_MODE_SKAS)
#define CHOOSE_MODE(tt, skas) (skas)
#elif defined(CONFIG_MODE_TT)
#define CHOOSE_MODE(tt, skas) (tt)
#endif
#define CHOOSE_MODE_PROC(tt, skas, args...) \
CHOOSE_MODE(tt(args), skas(args))
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/include/frame.h
View file @ 0672b227
......@@ -8,34 +8,34 @@
#include "sysdep/frame.h"
struct sc_frame {
struct frame_common {
void *data;
int len;
int sig_index;
int sc_index;
int sr_index;
int sr_relative;
int sp_index;
};
struct sc_frame {
struct frame_common common;
int sc_index;
struct arch_frame_data arch;
};
extern struct sc_frame signal_frame_sc;
extern struct sc_frame signal_frame_sc_sr;
struct si_frame {
void *data;
int len;
int sig_index;
struct frame_common common;
int sip_index;
int si_index;
int sr_index;
int sr_relative;
int sp_index;
};
extern struct si_frame signal_frame_si;
extern void capture_signal_stack(void);
extern void set_sc_ip_sp(void *sc_ptr, unsigned long ip, unsigned long sp);
#endif
......
arch/um/include/kern.h
View file @ 0672b227
......@@ -25,7 +25,6 @@ extern void *sbrk(int increment);
extern void *malloc(int size);
extern void perror(char *err);
extern int kill(int pid, int sig);
extern int getpid(void);
extern int getuid(void);
extern int pause(void);
extern int write(int, const void *, int);
......@@ -34,6 +33,7 @@ extern int close(int);
extern int read(unsigned int, char *, int);
extern int pipe(int *);
extern int sched_yield(void);
extern int ptrace(int op, int pid, long addr, long data);
#endif
/*
......
arch/um/include/kern_util.h
View file @ 0672b227
......@@ -15,23 +15,26 @@ extern char *gdb_init;
extern int kmalloc_ok;
extern int timer_irq_inited;
extern int jail;
extern int nsyscalls;
extern struct task_struct *idle_threads[NR_CPUS];
#define ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK))
#define ROUND_UP(addr) ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1)
#define UML_ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK))
#define UML_ROUND_UP(addr) \
UML_ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1)
extern int kernel_fork(unsigned long flags, int (*fn)(void *), void * arg);
extern unsigned long stack_sp(unsigned long page);
extern int kernel_thread_proc(void *data);
extern void syscall_segv(int sig);
extern int current_pid(void);
extern void set_init_pid(int pid);
extern unsigned long alloc_stack(int order, int atomic);
extern int do_signal(int error);
extern int is_stack_fault(unsigned long sp);
extern unsigned long segv(unsigned long address, unsigned long ip,
int is_write, int is_user, void *sc_ptr);
extern int set_user_mode(void *task);
int is_write, int is_user, void *sc);
extern int handle_page_fault(unsigned long address, unsigned long ip,
int is_write, int is_user, int *code_out);
extern void syscall_ready(void);
extern void set_tracing(void *t, int tracing);
extern int is_tracing(void *task);
......@@ -40,7 +43,6 @@ extern void kern_finish_exec(void *task, int new_pid, unsigned long stack);
extern int page_size(void);
extern int page_mask(void);
extern int need_finish_fork(void);
extern int do_proc_op(void *t, int proc_id);
extern void free_stack(unsigned long stack, int order);
extern void add_input_request(int op, void (*proc)(int), void *arg);
extern int sys_execve(char *file, char **argv, char **env);
......@@ -57,7 +59,6 @@ extern int next_trap_index(int max);
extern void default_idle(void);
extern void finish_fork(void);
extern void paging_init(void);
extern unsigned long um_virt_to_phys(void *t, unsigned long addr);
extern void init_flush_vm(void);
extern void *syscall_sp(void *t);
extern void syscall_trace(void);
......@@ -68,35 +69,28 @@ extern int external_pid(void *t);
extern int pid_to_processor_id(int pid);
extern void boot_timer_handler(int sig);
extern void interrupt_end(void);
extern void tracing_reboot(void);
extern void tracing_halt(void);
extern void tracing_cb(void (*proc)(void *), void *arg);
extern void initial_thread_cb(void (*proc)(void *), void *arg);
extern int debugger_signal(int status, int pid);
extern void debugger_parent_signal(int status, int pid);
extern void child_signal(int pid, int status);
extern int init_ptrace_proxy(int idle_pid, int startup, int stop);
extern int init_parent_proxy(int pid);
extern int singlestepping(void *t);
extern void check_stack_overflow(void *ptr);
extern void relay_signal(int sig, struct uml_pt_regs *regs);
extern int singlestepping(void *t);
extern void clear_singlestep(void *t);
extern void not_implemented(void);
extern int user_context(unsigned long sp);
extern void timer_irq(struct uml_pt_regs *regs);
extern void unprotect_stack(unsigned long stack);
extern void do_uml_exitcalls(void);
extern int attach_debugger(int idle_pid, int pid, int stop);
extern void *round_up(unsigned long addr);
extern void *round_down(unsigned long addr);
extern void bad_segv(unsigned long address, unsigned long ip, int is_write);
extern int config_gdb(char *str);
extern int remove_gdb(void);
extern char *uml_strdup(char *string);
extern void unprotect_kernel_mem(void);
extern void protect_kernel_mem(void);
extern unsigned long get_kmem_end(void);
extern void set_kmem_end(unsigned long);
extern void set_task_sizes(int arg);
extern void uml_cleanup(void);
extern int pid_to_processor_id(int pid);
extern void set_current(void *t);
......@@ -107,7 +101,6 @@ extern void *get_init_task(void);
extern int clear_user_proc(void *buf, int size);
extern int copy_to_user_proc(void *to, void *from, int size);
extern int copy_from_user_proc(void *to, void *from, int size);
extern void set_thread_sc(void *sc);
extern void bus_handler(int sig, struct uml_pt_regs *regs);
extern long execute_syscall(void *r);
extern int smp_sigio_handler(void);
......@@ -116,7 +109,6 @@ extern struct task_struct *get_task(int pid, int require);
extern void machine_halt(void);
extern int is_syscall(unsigned long addr);
extern void arch_switch(void);
extern int is_valid_pid(int pid);
extern void free_irq(unsigned int, void *);
extern int um_in_interrupt(void);
extern int cpu(void);
......
arch/um/include/line.h
View file @ 0672b227
......@@ -74,7 +74,7 @@ extern int line_open(struct line *lines, struct tty_struct *tty,
struct chan_opts *opts);
extern int line_setup(struct line *lines, int num, char *init,
int all_allowed);
extern int line_write(struct line *line, struct tty_struct *tty,
extern int line_write(struct line *line, struct tty_struct *tty, int from_user,
const char *buf, int len);
extern int line_write_room(struct tty_struct *tty);
extern char *add_xterm_umid(char *base);
......
arch/um/include/mem.h
View file @ 0672b227
......@@ -13,6 +13,7 @@ struct vm_reserved {
};
extern void set_usable_vm(unsigned long start, unsigned long end);
extern void set_kmem_end(unsigned long new);
#endif
......
arch/um/include/mem_user.h
View file @ 0672b227
......@@ -54,11 +54,6 @@ extern int create_mem_file(unsigned long len);
extern void setup_range(int fd, char *driver, unsigned long start,
unsigned long pfn, unsigned long total, int need_vm,
struct mem_region *region, void *reserved);
extern void map(unsigned long virt, unsigned long p, unsigned long len,
int r, int w, int x);
extern int unmap(void *addr, int len);
extern int protect(unsigned long addr, unsigned long len, int r, int w,
int x, int must_succeed);
extern void setup_memory(void *entry);
extern unsigned long find_iomem(char *driver, unsigned long *len_out);
extern int init_maps(struct mem_region *region);
......@@ -68,10 +63,15 @@ extern unsigned long get_vm(unsigned long len);
extern void setup_physmem(unsigned long start, unsigned long usable,
unsigned long len);
extern int setup_region(struct mem_region *region, void *entry);
extern void add_iomem(char *name, int fd, int size);
extern void add_iomem(char *name, int fd, unsigned long size);
extern struct mem_region *phys_region(unsigned long phys);
extern unsigned long phys_offset(unsigned long phys);
extern void unmap_physmem(void);
extern int map_memory(unsigned long virt, unsigned long phys,
unsigned long len, int r, int w, int x);
extern int protect_memory(unsigned long addr, unsigned long len,
int r, int w, int x, int must_succeed);
extern unsigned long get_kmem_end(void);
#endif
......
arch/um/include/mode.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __MODE_H__
#define __MODE_H__
#include "uml-config.h"
#ifdef CONFIG_MODE_TT
#include "../kernel/tt/include/mode.h"
#endif
#ifdef CONFIG_MODE_SKAS
#include "../kernel/skas/include/mode.h"
#endif
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/include/mode_kern.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __MODE_KERN_H__
#define __MODE_KERN_H__
#include "linux/config.h"
#ifdef CONFIG_MODE_TT
#include "../kernel/tt/include/mode_kern.h"
#endif
#ifdef CONFIG_MODE_SKAS
#include "../kernel/skas/include/mode_kern.h"
#endif
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/include/os.h
View file @ 0672b227
......@@ -103,10 +103,16 @@ extern int os_write_file(int fd, char *buf, int count);
extern unsigned long os_process_pc(int pid);
extern int os_process_parent(int pid);
extern void os_stop_process(int pid);
extern void os_kill_process(int pid);
extern void os_kill_process(int pid, int reap_child);
extern void os_usr1_process(int pid);
extern int os_getpid(void);
extern int os_map_memory(void *virt, int fd, unsigned long off,
unsigned long len, int r, int w, int x);
extern int os_protect_memory(void *addr, unsigned long len,
int r, int w, int x);
extern int os_unmap_memory(void *addr, int len);
#endif
/*
......
arch/um/include/sigcontext.h
View file @ 0672b227
......@@ -9,8 +9,6 @@
#include "sysdep/sigcontext.h"
extern int sc_size(void *data);
extern int copy_sc_to_user(void *to_ptr, void *from_ptr, void *data);
extern int copy_sc_from_user(void *to_ptr, void *from_ptr, void *data);
extern void sc_to_sc(void *to_ptr, void *from_ptr);
#endif
......
arch/um/include/syscall_user.h
View file @ 0672b227
/*
* Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SYSCALL_USER_H__
#define __SYSCALL_USER_H__
#ifndef __SYSCALL_USER_H
#define __SYSCALL_USER_H
#include <asm/sigcontext.h>
extern void syscall_handler(int sig, struct uml_pt_regs *regs);
extern void exit_kernel(int pid, void *task);
extern int do_syscall(void *task, int pid);
extern int record_syscall_start(int syscall);
extern void record_syscall_end(int index, int result);
#endif
......
arch/um/include/sysdep-i386/checksum.h 0 → 100644
View file @ 0672b227
/*
* Licensed under the GPL
*/
#ifndef __UM_SYSDEP_CHECKSUM_H
#define __UM_SYSDEP_CHECKSUM_H
#include "linux/string.h"
/*
* computes the checksum of a memory block at buff, length len,
* and adds in "sum" (32-bit)
*
* returns a 32-bit number suitable for feeding into itself
* or csum_tcpudp_magic
*
* this function must be called with even lengths, except
* for the last fragment, which may be odd
*
* it's best to have buff aligned on a 32-bit boundary
*/
unsigned int csum_partial(const unsigned char * buff, int len,
unsigned int sum);
/*
* the same as csum_partial, but copies from src while it
* checksums, and handles user-space pointer exceptions correctly, when needed.
*
* here even more important to align src and dst on a 32-bit (or even
* better 64-bit) boundary
*/
unsigned int csum_partial_copy_to(const char *src, char *dst, int len,
int sum, int *err_ptr);
unsigned int csum_partial_copy_from(const char *src, char *dst, int len,
int sum, int *err_ptr);
/*
* Note: when you get a NULL pointer exception here this means someone
* passed in an incorrect kernel address to one of these functions.
*
* If you use these functions directly please don't forget the
* verify_area().
*/
static __inline__
unsigned int csum_partial_copy_nocheck(const char *src, char *dst,
int len, int sum)
{
memcpy(dst, src, len);
return(csum_partial(dst, len, sum));
}
static __inline__
unsigned int csum_partial_copy_from_user(const char *src, char *dst,
int len, int sum, int *err_ptr)
{
return csum_partial_copy_from(src, dst, len, sum, err_ptr);
}
/*
* These are the old (and unsafe) way of doing checksums, a warning message
* will be printed if they are used and an exeption occurs.
*
* these functions should go away after some time.
*/
#define csum_partial_copy_fromuser csum_partial_copy_from_user
unsigned int csum_partial_copy( const char *src, char *dst, int len, int sum);
/*
* This is a version of ip_compute_csum() optimized for IP headers,
* which always checksum on 4 octet boundaries.
*
* By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
* Arnt Gulbrandsen.
*/
static inline unsigned short ip_fast_csum(unsigned char * iph,
unsigned int ihl)
{
unsigned int sum;
__asm__ __volatile__(
"movl (%1), %0 ;\n"
"subl $4, %2 ;\n"
"jbe 2f ;\n"
"addl 4(%1), %0 ;\n"
"adcl 8(%1), %0 ;\n"
"adcl 12(%1), %0 ;\n"
"1: adcl 16(%1), %0 ;\n"
"lea 4(%1), %1 ;\n"
"decl %2 ;\n"
"jne 1b ;\n"
"adcl $0, %0 ;\n"
"movl %0, %2 ;\n"
"shrl $16, %0 ;\n"
"addw %w2, %w0 ;\n"
"adcl $0, %0 ;\n"
"notl %0 ;\n"
"2: ;\n"
/* Since the input registers which are loaded with iph and ipl
are modified, we must also specify them as outputs, or gcc
will assume they contain their original values. */
: "=r" (sum), "=r" (iph), "=r" (ihl)
: "1" (iph), "2" (ihl));
return(sum);
}
/*
* Fold a partial checksum
*/
static inline unsigned int csum_fold(unsigned int sum)
{
__asm__(
"addl %1, %0 ;\n"
"adcl $0xffff, %0 ;\n"
: "=r" (sum)
: "r" (sum << 16), "0" (sum & 0xffff0000)
);
return (~sum) >> 16;
}
static inline unsigned long csum_tcpudp_nofold(unsigned long saddr,
unsigned long daddr,
unsigned short len,
unsigned short proto,
unsigned int sum)
{
__asm__(
"addl %1, %0 ;\n"
"adcl %2, %0 ;\n"
"adcl %3, %0 ;\n"
"adcl $0, %0 ;\n"
: "=r" (sum)
: "g" (daddr), "g"(saddr), "g"((ntohs(len)<<16)+proto*256), "0"(sum));
return sum;
}
/*
* computes the checksum of the TCP/UDP pseudo-header
* returns a 16-bit checksum, already complemented
*/
static inline unsigned short int csum_tcpudp_magic(unsigned long saddr,
unsigned long daddr,
unsigned short len,
unsigned short proto,
unsigned int sum)
{
return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
}
/*
* this routine is used for miscellaneous IP-like checksums, mainly
* in icmp.c
*/
static inline unsigned short ip_compute_csum(unsigned char * buff, int len)
{
return csum_fold (csum_partial(buff, len, 0));
}
#define _HAVE_ARCH_IPV6_CSUM
static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
struct in6_addr *daddr,
__u32 len,
unsigned short proto,
unsigned int sum)
{
__asm__(
"addl 0(%1), %0 ;\n"
"adcl 4(%1), %0 ;\n"
"adcl 8(%1), %0 ;\n"
"adcl 12(%1), %0 ;\n"
"adcl 0(%2), %0 ;\n"
"adcl 4(%2), %0 ;\n"
"adcl 8(%2), %0 ;\n"
"adcl 12(%2), %0 ;\n"
"adcl %3, %0 ;\n"
"adcl %4, %0 ;\n"
"adcl $0, %0 ;\n"
: "=&r" (sum)
: "r" (saddr), "r" (daddr),
"r"(htonl(len)), "r"(htonl(proto)), "0"(sum));
return csum_fold(sum);
}
/*
* Copy and checksum to user
*/
#define HAVE_CSUM_COPY_USER
static __inline__ unsigned int csum_and_copy_to_user(const char *src,
char *dst, int len,
int sum, int *err_ptr)
{
if (access_ok(VERIFY_WRITE, dst, len))
return(csum_partial_copy_to(src, dst, len, sum, err_ptr));
if (len)
*err_ptr = -EFAULT;
return -1; /* invalid checksum */
}
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/include/sysdep-i386/frame_kern.h
View file @ 0672b227
......@@ -20,7 +20,8 @@ static inline void *sp_to_rt_sc(unsigned long sp)
{
unsigned long sc;
sc = sp - signal_frame_si.sp_index + signal_frame_si.len - 4;
sc = sp - signal_frame_si.common.sp_index +
signal_frame_si.common.len - 4;
return((void *) sc);
}
......@@ -28,7 +29,8 @@ static inline void *sp_to_mask(unsigned long sp)
{
unsigned long mask;
mask = sp - signal_frame_sc.sp_index + signal_frame_sc.len - 8;
mask = sp - signal_frame_sc.common.sp_index +
signal_frame_sc.common.len - 8;
return((void *) mask);
}
......@@ -38,7 +40,8 @@ static inline void *sp_to_rt_mask(unsigned long sp)
{
unsigned long mask;
mask = sp - signal_frame_si.sp_index + signal_frame_si.len +
mask = sp - signal_frame_si.common.sp_index +
signal_frame_si.common.len +
sc_size(&signal_frame_sc.arch) - 4;
return((void *) mask);
}
......
arch/um/include/sysdep-i386/ptrace.h
View file @ 0672b227
/*
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SYSDEP_I386_PTRACE_H
#define __SYSDEP_I386_PTRACE_H
#include "sysdep/sc.h"
#include "uml-config.h"
#include "ptrace-tt.h"
#include "ptrace-skas.h"
#include "choose-mode.h"
struct uml_pt_regs {
unsigned long args[6];
long syscall;
int is_user;
void *sc;
union {
#ifdef CONFIG_MODE_TT
void *tt;
#endif
#ifdef CONFIG_MODE_SKAS
struct {
unsigned long regs[HOST_FRAME_SIZE];
unsigned long fp[HOST_FP_SIZE];
unsigned long xfp[HOST_XFP_SIZE];
unsigned long fault_addr;
unsigned long fault_type;
unsigned long trap_type;
} skas;
#endif
} mode;
};
#define EMPTY_UML_PT_REGS { \
syscall : -1, \
args : { [0 ... 5] = 0 }, \
is_user : 0, \
sc : NULL }
#define UPT_IP(regs) SC_IP((regs)->sc)
#define UPT_SP(regs) SC_SP((regs)->sc)
#define UPT_EFLAGS(regs) SC_EFLAGS((regs)->sc)
#define UPT_EAX(regs) SC_EAX((regs)->sc)
#define UPT_EBX(regs) SC_EBX((regs)->sc)
#define UPT_ECX(regs) SC_ECX((regs)->sc)
#define UPT_EDX(regs) SC_EDX((regs)->sc)
#define UPT_ESI(regs) SC_ESI((regs)->sc)
#define UPT_EDI(regs) SC_EDI((regs)->sc)
#define UPT_EBP(regs) SC_EBP((regs)->sc)
#define UPT_ORIG_EAX(regs) ((regs)->syscall)
#define UPT_CS(regs) SC_CS((regs)->sc)
#define UPT_SS(regs) SC_SS((regs)->sc)
#define UPT_DS(regs) SC_DS((regs)->sc)
#define UPT_ES(regs) SC_ES((regs)->sc)
#define UPT_FS(regs) SC_FS((regs)->sc)
#define UPT_GS(regs) SC_GS((regs)->sc)
#define UPT_SC(regs) ((regs)->sc)
is_user : 0 }
extern int mode_tt;
#define UPT_IP(r) \
CHOOSE_MODE(SC_IP((r)->mode.tt), REGS_IP((r)->mode.skas.regs))
#define UPT_SP(r) \
CHOOSE_MODE(SC_SP((r)->mode.tt), REGS_SP((r)->mode.skas.regs))
#define UPT_EFLAGS(r) \
CHOOSE_MODE(SC_EFLAGS((r)->mode.tt), REGS_EFLAGS((r)->mode.skas.regs))
#define UPT_EAX(r) \
CHOOSE_MODE(SC_EAX((r)->mode.tt), REGS_EAX((r)->mode.skas.regs))
#define UPT_EBX(r) \
CHOOSE_MODE(SC_EBX((r)->mode.tt), REGS_EBX((r)->mode.skas.regs))
#define UPT_ECX(r) \
CHOOSE_MODE(SC_ECX((r)->mode.tt), REGS_ECX((r)->mode.skas.regs))
#define UPT_EDX(r) \
CHOOSE_MODE(SC_EDX((r)->mode.tt), REGS_EDX((r)->mode.skas.regs))
#define UPT_ESI(r) \
CHOOSE_MODE(SC_ESI((r)->mode.tt), REGS_ESI((r)->mode.skas.regs))
#define UPT_EDI(r) \
CHOOSE_MODE(SC_EDI((r)->mode.tt), REGS_EDI((r)->mode.skas.regs))
#define UPT_EBP(r) \
CHOOSE_MODE(SC_EBP((r)->mode.tt), REGS_EBP((r)->mode.skas.regs))
#define UPT_ORIG_EAX(r) ((r)->syscall)
#define UPT_CS(r) \
CHOOSE_MODE(SC_CS((r)->mode.tt), REGS_CS((r)->mode.skas.regs))
#define UPT_SS(r) \
CHOOSE_MODE(SC_SS((r)->mode.tt), REGS_SS((r)->mode.skas.regs))
#define UPT_DS(r) \
CHOOSE_MODE(SC_DS((r)->mode.tt), REGS_DS((r)->mode.skas.regs))
#define UPT_ES(r) \
CHOOSE_MODE(SC_ES((r)->mode.tt), REGS_ES((r)->mode.skas.regs))
#define UPT_FS(r) \
CHOOSE_MODE(SC_FS((r)->mode.tt), REGS_FS((r)->mode.skas.regs))
#define UPT_GS(r) \
CHOOSE_MODE(SC_GS((r)->mode.tt), REGS_GS((r)->mode.skas.regs))
#define UPT_SC(r) ((r)->mode.tt)
#define UPT_REG(regs, reg) \
({ unsigned long val; \
......@@ -94,12 +128,29 @@ struct uml_pt_regs {
} \
} while (0)
#define UPT_SET_SYSCALL_RETURN(regs, res) \
SC_SET_SYSCALL_RETURN((regs)->sc, (res))
#define UPT_RESTART_SYSCALL(regs) SC_RESTART_SYSCALL((regs)->sc)
#define UPT_ORIG_SYSCALL(regs) UPT_EAX(regs)
#define UPT_SYSCALL_NR(regs) ((regs)->syscall)
#define UPT_SYSCALL_RET(regs) UPT_EAX(regs)
#define UPT_SET_SYSCALL_RETURN(r, res) \
CHOOSE_MODE(SC_SET_SYSCALL_RETURN((r)->mode.tt, (res)), \
REGS_SET_SYSCALL_RETURN((r)->mode.skas.regs, (res)))
#define UPT_RESTART_SYSCALL(r) \
CHOOSE_MODE(SC_RESTART_SYSCALL((r)->mode.tt), \
REGS_RESTART_SYSCALL((r)->mode.skas.regs))
#define UPT_ORIG_SYSCALL(r) UPT_EAX(r)
#define UPT_SYSCALL_NR(r) ((r)->syscall)
#define UPT_SYSCALL_RET(r) UPT_EAX(r)
#define UPT_SEGV_IS_FIXABLE(r) \
CHOOSE_MODE(SC_SEGV_IS_FIXABLE(r->mode.tt), \
REGS_SEGV_IS_FIXABLE(&r->mode.skas))
#define UPT_FAULT_ADDR(r) \
CHOOSE_MODE(SC_FAULT_ADDR(r->mode.tt), \
REGS_FAULT_ADDR(&r->mode.skas))
#define UPT_FAULT_WRITE(r) \
CHOOSE_MODE(SC_FAULT_WRITE(r->mode.tt), \
REGS_FAULT_WRITE(&r->mode.skas))
#endif
......
arch/um/include/sysdep-i386/sigcontext.h
View file @ 0672b227
......@@ -6,13 +6,22 @@
#ifndef __SYS_SIGCONTEXT_I386_H
#define __SYS_SIGCONTEXT_I386_H
#include "sc.h"
#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
#define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
#define SC_SET_SYSCALL_RETURN(sc, result) do SC_EAX(sc) = (result) ; while(0)
#define SC_SET_SYSCALL_RETURN(sc, result) SC_EAX(sc) = (result)
#define SC_FAULT_ADDR(sc) SC_CR2(sc)
#define SC_FAULT_WRITE(sc) (SC_ERR(sc) & 2)
#define SC_FAULT_TYPE(sc) SC_ERR(sc)
#define FAULT_WRITE(err) (err & 2)
#define TO_SC_ERR(is_write) ((is_write) ? 2 : 0)
#define SC_FAULT_WRITE(sc) (FAULT_WRITE(SC_ERR(sc)))
#define SC_TRAP_TYPE(sc) SC_TRAPNO(sc)
/* ptrace expects that, at the start of a system call, %eax contains
* -ENOSYS, so this makes it so.
......@@ -20,10 +29,12 @@
#define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0)
/* These are General Protection and Page Fault */
#define SEGV_IS_FIXABLE(sc) ((SC_TRAPNO(sc) == 13) || (SC_TRAPNO(sc) == 14))
#define SEGV_IS_FIXABLE(trap) ((trap == 13) || (trap == 14))
/* XXX struct sigcontext needs declaring by now */
#define SC_SEGV_IS_FIXABLE(sc) (SEGV_IS_FIXABLE(SC_TRAPNO(sc)))
#ifdef CONFIG_MODE_TT
/* XXX struct sigcontext needs declaring by now */
static inline void sc_to_regs(struct uml_pt_regs *regs, struct sigcontext *sc,
unsigned long syscall)
{
......@@ -35,6 +46,20 @@ static inline void sc_to_regs(struct uml_pt_regs *regs, struct sigcontext *sc,
regs->args[4] = SC_EDI(sc);
regs->args[5] = SC_EBP(sc);
}
#endif
#ifdef CONFIG_MODE_SKAS
static inline void host_to_regs(struct uml_pt_regs *regs)
{
regs->syscall = UPT_ORIG_EAX(regs);
regs->args[0] = UPT_EBX(regs);
regs->args[1] = UPT_ECX(regs);
regs->args[2] = UPT_EDX(regs);
regs->args[3] = UPT_ESI(regs);
regs->args[4] = UPT_EDI(regs);
regs->args[5] = UPT_EBP(regs);
}
#endif
extern unsigned long *sc_sigmask(void *sc_ptr);
extern int sc_get_fpregs(unsigned long buf, void *sc_ptr);
......
arch/um/include/time_user.h
View file @ 0672b227
......@@ -8,7 +8,7 @@
extern void timer(void);
extern void switch_timers(int to_real);
extern void user_time_init(void);
extern void set_interval(int timer_type);
extern void idle_sleep(int secs);
extern void enable_timer(void);
extern void time_lock(void);
......
arch/um/include/um_mmu.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __ARCH_UM_MMU_H
#define __ARCH_UM_MMU_H
#include "linux/config.h"
#include "choose-mode.h"
#ifdef CONFIG_MODE_TT
#include "../kernel/tt/include/mmu.h"
#endif
#ifdef CONFIG_MODE_SKAS
#include "../kernel/skas/include/mmu.h"
#endif
typedef union {
#ifdef CONFIG_MODE_TT
struct mmu_context_tt tt;
#endif
#ifdef CONFIG_MODE_SKAS
struct mmu_context_skas skas;
#endif
} mm_context_t;
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/include/um_uaccess.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __ARCH_UM_UACCESS_H
#define __ARCH_UM_UACCESS_H
#include "linux/config.h"
#include "choose-mode.h"
#ifdef CONFIG_MODE_TT
#include "../kernel/tt/include/uaccess.h"
#endif
#ifdef CONFIG_MODE_SKAS
#include "../kernel/skas/include/uaccess.h"
#endif
#define access_ok(type, addr, size) \
CHOOSE_MODE_PROC(access_ok_tt, access_ok_skas, type, addr, size)
static inline int verify_area(int type, const void * addr, unsigned long size)
{
return(CHOOSE_MODE_PROC(verify_area_tt, verify_area_skas, type, addr,
size));
}
static inline int copy_from_user(void *to, const void *from, int n)
{
return(CHOOSE_MODE_PROC(copy_from_user_tt, copy_from_user_skas, to,
from, n));
}
static inline int copy_to_user(void *to, const void *from, int n)
{
return(CHOOSE_MODE_PROC(copy_to_user_tt, copy_to_user_skas, to,
from, n));
}
static inline int strncpy_from_user(char *dst, const char *src, int count)
{
return(CHOOSE_MODE_PROC(strncpy_from_user_tt, strncpy_from_user_skas,
dst, src, count));
}
static inline int __clear_user(void *mem, int len)
{
return(CHOOSE_MODE_PROC(__clear_user_tt, __clear_user_skas, mem, len));
}
static inline int clear_user(void *mem, int len)
{
return(CHOOSE_MODE_PROC(clear_user_tt, clear_user_skas, mem, len));
}
static inline int strnlen_user(const void *str, int len)
{
return(CHOOSE_MODE_PROC(strnlen_user_tt, strnlen_user_skas, str, len));
}
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/include/user_util.h
View file @ 0672b227
......@@ -8,6 +8,8 @@
#include "sysdep/ptrace.h"
extern int mode_tt;
extern int grantpt(int __fd);
extern int unlockpt(int __fd);
extern char *ptsname(int __fd);
......@@ -21,6 +23,13 @@ struct cpu_task {
extern struct cpu_task cpu_tasks[];
struct signal_info {
void (*handler)(int, struct uml_pt_regs *);
int is_irq;
};
extern struct signal_info sig_info[];
extern unsigned long low_physmem;
extern unsigned long high_physmem;
extern unsigned long uml_physmem;
......@@ -29,16 +38,11 @@ extern unsigned long end_vm;
extern unsigned long start_vm;
extern unsigned long highmem;
extern int tracing_pid;
extern int honeypot;
extern char host_info[];
extern char saved_command_line[];
extern char command_line[];
extern int gdb_pid;
extern char *tempdir;
extern unsigned long _stext, _etext, _sdata, _edata, __bss_start, _end;
......@@ -51,12 +55,10 @@ extern int pty_close_sigio;
extern void stop(void);
extern void stack_protections(unsigned long address);
extern void task_protections(unsigned long address);
extern int signals(int (*init_proc)(void *), void *sp);
extern int wait_for_stop(int pid, int sig, int cont_type, void *relay);
extern void *add_signal_handler(int sig, void (*handler)(int));
extern int start_fork_tramp(void *arg, unsigned long temp_stack,
int clone_flags, int (*tramp)(void *));
extern void trace_myself(void);
extern int clone_and_wait(int (*fn)(void *), void *arg, void *sp, int flags);
extern int linux_main(int argc, char **argv);
extern void remap_data(void *segment_start, void *segment_end, int w);
......@@ -69,13 +71,12 @@ extern int switcheroo(int fd, int prot, void *from, void *to, int size);
extern void setup_machinename(char *machine_out);
extern void setup_hostinfo(void);
extern void add_arg(char *cmd_line, char *arg);
extern void init_new_thread(void *sig_stack, void (*usr1_handler)(int));
extern void attach_process(int pid);
extern int fork_tramp(void *sig_stack);
extern void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int));
extern void init_new_thread_signals(int altstack);
extern void do_exec(int old_pid, int new_pid);
extern void tracer_panic(char *msg, ...);
extern char *get_umid(int only_if_set);
extern void do_longjmp(void *p);
extern void do_longjmp(void *p, int val);
extern void suspend_new_thread(int fd);
extern int detach(int pid, int sig);
extern int attach(int pid);
......@@ -89,7 +90,8 @@ extern void arch_check_bugs(void);
extern int arch_handle_signal(int sig, struct uml_pt_regs *regs);
extern int arch_fixup(unsigned long address, void *sc_ptr);
extern void forward_pending_sigio(int target);
extern int can_do_skas(void);
#endif
/*
......
arch/um/kernel/Makefile
View file @ 0672b227
#
# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
# Licensed under the GPL
#
EXTRA_TARGETS := unmap_fin.o
obj-y = config.o exec_kern.o exec_user.o exitcode.o frame_kern.o frame.o \
obj-y = checksum.o config.o exec_kern.o exitcode.o frame_kern.o frame.o \
helper.o init_task.o irq.o irq_user.o ksyms.o mem.o mem_user.o \
process.o process_kern.o ptrace.o reboot.o resource.o sigio_user.o \
sigio_kern.o signal_kern.o signal_user.o smp.o syscall_kern.o \
syscall_user.o sysrq.o sys_call_table.o tempfile.o time.o \
time_kern.o tlb.o trap_kern.o trap_user.o uaccess_user.o um_arch.o \
time_kern.o tlb.o trap_kern.o trap_user.o um_arch.o \
umid.o user_util.o
obj-$(CONFIG_BLK_DEV_INITRD) += initrd_kern.o initrd_user.o
obj-$(CONFIG_GPROF) += gprof_syms.o
obj-$(CONFIG_GCOV) += gmon_syms.o
obj-$(CONFIG_TTY_LOG) += tty_log.o
# user_syms.o not included here because kbuild has its own ideas about
# building anything in export-objs
obj-$(CONFIG_MODE_TT) += tt/
obj-$(CONFIG_MODE_SKAS) += skas/
USER_OBJS := $(filter %_user.o,$(obj-y)) config.o helper.o process.o \
tempfile.o time.o tty_log.o umid.o user_util.o user_syms.o
USER_OBJS := $(foreach file,$(USER_OBJS),arch/um/kernel/$(file))
user-objs-$(CONFIG_TTY_LOG) += tty_log.o
export-objs := ksyms.o process_kern.o signal_kern.o gprof_syms.o gmon_syms.o
# user_syms.o not included here because Rules.make has its own ideas about
# building anything in export-objs
USER_OBJS := $(filter %_user.o,$(obj-y)) $(user-objs-y) config.o helper.o \
process.o tempfile.o time.o tty_log.o umid.o user_util.o user_syms.o
USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
UNMAP_CFLAGS := $(patsubst -pg -DPROFILING,,$(USER_CFLAGS))
UNMAP_CFLAGS := $(patsubst -fprofile-arcs -ftest-coverage,,$(UNMAP_CFLAGS))
ifeq ($(CONFIG_MODULES), y)
DMODULES = -D__CONFIG_MODULES__
endif
DMODULES-$(CONFIG_MODULES) = -D__CONFIG_MODULES__
DMODVERSIONS-$(CONFIG_MODVERSIONS) = -D__CONFIG_MODVERSIONS__
ifeq ($(CONFIG_MODVERSIONS), y)
DMODVERSIONS = -D__CONFIG_MODVERSIONS__
endif
export-objs-$(CONFIG_GPROF) += gprof_syms.o
export-objs-$(CONFIG_GCOV) += gmon_syms.o
obj-$(CONFIG_GPROF) += gprof_syms.o
obj-$(CONFIG_GCOV) += gmon_syms.o
obj-$(CONFIG_TTY_LOG) += tty_log.o
export-objs := ksyms.o process_kern.o signal_kern.o $(export-objs-y)
CFLAGS_user_syms.o = -D__AUTOCONF_INCLUDED__ $(DMODULES) $(DMODVERSIONS) \
CFLAGS_user_syms.o = -D__AUTOCONF_INCLUDED__ $(DMODULES-y) $(DMODVERSIONS-y) \
-I/usr/include -I../include
CFLAGS_frame.o := $(patsubst -fomit-frame-pointer,,$(USER_CFLAGS))
......@@ -42,27 +49,28 @@ CFLAGS_frame.o := $(patsubst -fomit-frame-pointer,,$(USER_CFLAGS))
$(USER_OBJS) : %.o: %.c
$(CC) $(CFLAGS_$@) $(USER_CFLAGS) -c -o $@ $<
arch/um/kernel/unmap.o: arch/um/kernel/unmap.c
$(obj)/unmap.o: $(src)/unmap.c
$(CC) $(UNMAP_CFLAGS) -c -o $@ $<
arch/um/kernel/unmap_fin.o : arch/um/kernel/unmap.o
$(obj)/unmap_fin.o : $(src)/unmap.o
ld -r -o $@ $< -lc -L/usr/lib
# This has to be separate because it needs be compiled with frame pointers
# regardless of how the rest of the kernel is built.
arch/um/kernel/frame.o: arch/um/kernel/frame.c
$(obj)/frame.o: $(src)/frame.c
$(CC) $(CFLAGS_$(notdir $@)) -c -o $@ $<
QUOTE = 'my $$config=`cat $(TOPDIR)/.config`; $$config =~ s/"/\\"/g ; while(<STDIN>) { $$_ =~ s/CONFIG/$$config/; print $$_ }'
arch/um/kernel/config.c : arch/um/kernel/config.c.in $(TOPDIR)/.config
$(PERL) -e $(QUOTE) < arch/um/kernel/config.c.in > $@
$(obj)/config.c : $(src)/config.c.in $(TOPDIR)/.config
$(PERL) -e $(QUOTE) < $(src)/config.c.in > $@
arch/um/kernel/config.o : arch/um/kernel/config.c
$(obj)/config.o : $(obj)/config.c
clean:
rm -f config.c
for dir in $(subdir-y) ; do $(MAKE) -C $$dir clean; done
modules:
......
arch/um/kernel/checksum.c 0 → 100644
View file @ 0672b227
#include "asm/uaccess.h"
#include "linux/errno.h"
extern unsigned int arch_csum_partial(const char *buff, int len, int sum);
extern unsigned int csum_partial(char *buff, int len, int sum)
{
return(arch_csum_partial(buff, len, sum));
}
unsigned int csum_partial_copy_to(const char *src, char *dst, int len,
int sum, int *err_ptr)
{
if(copy_to_user(dst, src, len)){
*err_ptr = -EFAULT;
return(-1);
}
return(arch_csum_partial(src, len, sum));
}
unsigned int csum_partial_copy_from(const char *src, char *dst, int len,
int sum, int *err_ptr)
{
if(copy_from_user(dst, src, len)){
*err_ptr = -EFAULT;
return(-1);
}
return(arch_csum_partial(dst, len, sum));
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/exec_kern.c
View file @ 0672b227
......@@ -18,65 +18,17 @@
#include "2_5compat.h"
#include "os.h"
#include "time_user.h"
/* See comment above fork_tramp for why sigstop is defined and used like
* this
*/
static int sigstop = SIGSTOP;
static int exec_tramp(void *sig_stack)
{
int sig = sigstop;
init_new_thread(sig_stack, NULL);
kill(os_getpid(), sig);
return(0);
}
#include "choose-mode.h"
#include "mode_kern.h"
void flush_thread(void)
{
unsigned long stack;
int new_pid;
stack = alloc_stack(0, 0);
if(stack == 0){
printk(KERN_ERR
"flush_thread : failed to allocate temporary stack\n");
do_exit(SIGKILL);
}
new_pid = start_fork_tramp((void *) current->thread.kernel_stack,
stack, 0, exec_tramp);
if(new_pid < 0){
printk(KERN_ERR
"flush_thread : new thread failed, errno = %d\n",
-new_pid);
do_exit(SIGKILL);
}
if(current->thread_info->cpu == 0)
forward_interrupts(new_pid);
current->thread.request.op = OP_EXEC;
current->thread.request.u.exec.pid = new_pid;
unprotect_stack((unsigned long) current->thread_info);
os_usr1_process(os_getpid());
enable_timer();
free_page(stack);
protect(uml_reserved, high_physmem - uml_reserved, 1, 1, 0, 1);
task_protections((unsigned long) current->thread_info);
force_flush_all();
unblock_signals();
CHOOSE_MODE(flush_thread_tt(), flush_thread_skas());
}
void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
{
set_fs(USER_DS);
flush_tlb_mm(current->mm);
PT_REGS_IP(regs) = eip;
PT_REGS_SP(regs) = esp;
PT_FIX_EXEC_STACK(esp);
CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp);
}
static int execve1(char *file, char **argv, char **env)
......@@ -93,8 +45,12 @@ static int execve1(char *file, char **argv, char **env)
int um_execve(char *file, char **argv, char **env)
{
if(execve1(file, argv, env) == 0) do_longjmp(current->thread.jmp);
return(-1);
int err;
err = execve1(file, argv, env);
if(!err)
do_longjmp(current->thread.exec_buf, 1);
return(err);
}
int sys_execve(char *file, char **argv, char **env)
......
arch/um/kernel/frame.c
View file @ 0672b227
......@@ -12,6 +12,7 @@
#include <sched.h>
#include <errno.h>
#include <sys/ptrace.h>
#include <sys/syscall.h>
#include <sys/mman.h>
#include <asm/page.h>
#include <asm/ptrace.h>
......@@ -84,8 +85,8 @@ static int capture_stack(int (*child)(void *arg), void *arg, void *sp,
printf("capture_stack : waitpid failed - errno = %d\n", errno);
exit(1);
}
if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0)){
printf("capture_stack : Expected exit status 0, "
if(!WIFSIGNALED(status) || (WTERMSIG(status) != 9)){
printf("capture_stack : Expected exit signal 9, "
"got status = 0x%x\n", status);
exit(1);
}
......@@ -103,28 +104,61 @@ static int capture_stack(int (*child)(void *arg), void *arg, void *sp,
return(len);
}
static void child_common(void *sp, int size, sighandler_t handler, int flags)
struct common_raw {
void *stack;
int size;
unsigned long sig;
unsigned long sr;
unsigned long sp;
};
#define SA_RESTORER (0x04000000)
typedef unsigned long old_sigset_t;
struct old_sigaction {
__sighandler_t handler;
old_sigset_t sa_mask;
unsigned long sa_flags;
void (*sa_restorer)(void);
};
static void child_common(struct common_raw *common, sighandler_t handler,
int restorer, int flags)
{
stack_t ss;
struct sigaction sa;
stack_t ss = ((stack_t) { .ss_sp = common->stack,
.ss_flags = 0,
.ss_size = common->size });
int err;
if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){
printf("PTRACE_TRACEME failed, errno = %d\n", errno);
}
ss.ss_sp = sp;
ss.ss_flags = 0;
ss.ss_size = size;
if(sigaltstack(&ss, NULL) < 0){
printf("sigaltstack failed - errno = %d\n", errno);
_exit(1);
kill(getpid(), SIGKILL);
}
sa.sa_handler = handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_ONSTACK | flags;
if(sigaction(SIGUSR1, &sa, NULL) < 0){
if(restorer){
struct sigaction sa;
sa.sa_handler = handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_ONSTACK | flags;
err = sigaction(SIGUSR1, &sa, NULL);
}
else {
struct old_sigaction sa;
sa.handler = handler;
sa.sa_mask = 0;
sa.sa_flags = (SA_ONSTACK | flags) & ~SA_RESTORER;
err = syscall(__NR_sigaction, SIGUSR1, &sa, NULL);
}
if(err < 0){
printf("sigaction failed - errno = %d\n", errno);
_exit(1);
kill(getpid(), SIGKILL);
}
os_stop_process(os_getpid());
......@@ -133,13 +167,12 @@ static void child_common(void *sp, int size, sighandler_t handler, int flags)
/* Changed only during early boot */
struct sc_frame signal_frame_sc;
struct sc_frame signal_frame_sc_sr;
struct sc_frame_raw {
void *stack;
int size;
unsigned long sig;
struct common_raw common;
unsigned long sc;
unsigned long sr;
unsigned long sp;
int restorer;
struct arch_frame_data_raw arch;
};
......@@ -148,20 +181,20 @@ static struct sc_frame_raw *raw_sc = NULL;
static void sc_handler(int sig, struct sigcontext sc)
{
raw_sc->sig = (unsigned long) &sig;
raw_sc->common.sig = (unsigned long) &sig;
raw_sc->common.sr = frame_restorer();
raw_sc->common.sp = frame_sp();
raw_sc->sc = (unsigned long) &sc;
raw_sc->sr = frame_restorer();
raw_sc->sp = frame_sp();
setup_arch_frame_raw(&raw_sc->arch, &sc);
os_stop_process(os_getpid());
_exit(0);
kill(getpid(), SIGKILL);
}
static int sc_child(void *arg)
{
raw_sc = arg;
child_common(raw_sc->stack, raw_sc->size, (sighandler_t) sc_handler,
0);
child_common(&raw_sc->common, (sighandler_t) sc_handler,
raw_sc->restorer, 0);
return(-1);
}
......@@ -169,13 +202,9 @@ static int sc_child(void *arg)
struct si_frame signal_frame_si;
struct si_frame_raw {
void *stack;
int size;
unsigned long sig;
struct common_raw common;
unsigned long sip;
unsigned long si;
unsigned long sr;
unsigned long sp;
};
/* Changed only during early boot */
......@@ -183,23 +212,59 @@ static struct si_frame_raw *raw_si = NULL;
static void si_handler(int sig, siginfo_t *si)
{
raw_si->sig = (unsigned long) &sig;
raw_si->common.sig = (unsigned long) &sig;
raw_si->common.sr = frame_restorer();
raw_si->common.sp = frame_sp();
raw_si->sip = (unsigned long) &si;
raw_si->si = (unsigned long) si;
raw_si->sr = frame_restorer();
raw_si->sp = frame_sp();
os_stop_process(os_getpid());
_exit(0);
kill(getpid(), SIGKILL);
}
static int si_child(void *arg)
{
raw_si = arg;
child_common(raw_si->stack, raw_si->size, (sighandler_t) si_handler,
SA_SIGINFO);
child_common(&raw_si->common, (sighandler_t) si_handler, 1,
SA_SIGINFO);
return(-1);
}
static int relative_sr(unsigned long sr, int sr_index, void *stack,
void *framep)
{
unsigned long *srp = (unsigned long *) sr;
unsigned long frame = (unsigned long) framep;
if((*srp & PAGE_MASK) == (unsigned long) stack){
*srp -= sr;
*((unsigned long *) (frame + sr_index)) = *srp;
return(1);
}
else return(0);
}
static unsigned long capture_stack_common(int (*proc)(void *), void *arg,
struct common_raw *common_in,
void *top, void *sigstack,
int stack_len,
struct frame_common *common_out)
{
unsigned long sig_top = (unsigned long) sigstack + stack_len, base;
common_in->stack = (void *) sigstack;
common_in->size = stack_len;
common_out->len = capture_stack(proc, arg, top, sig_top,
&common_out->data);
base = sig_top - common_out->len;
common_out->sig_index = common_in->sig - base;
common_out->sp_index = common_in->sp - base;
common_out->sr_index = common_in->sr - base;
common_out->sr_relative = relative_sr(common_in->sr,
common_out->sr_index, sigstack,
common_out->data);
return(base);
}
void capture_signal_stack(void)
{
struct sc_frame_raw raw_sc;
......@@ -220,54 +285,29 @@ void capture_signal_stack(void)
top = (unsigned long) stack + PAGE_SIZE - sizeof(void *);
sig_top = (unsigned long) sigstack + PAGE_SIZE;
raw_sc.stack = sigstack;
raw_sc.size = PAGE_SIZE;
signal_frame_sc.len = capture_stack(sc_child, &raw_sc, (void *) top,
sig_top, &signal_frame_sc.data);
/* These are the offsets within signal_frame_sc.data (counting from
* the bottom) of sig, sc, SA_RESTORER, and the initial sp.
*/
/* Get the sigcontext, no sigrestorer layout */
raw_sc.restorer = 0;
base = capture_stack_common(sc_child, &raw_sc, &raw_sc.common,
(void *) top, sigstack, PAGE_SIZE,
&signal_frame_sc.common);
base = sig_top - signal_frame_sc.len;
signal_frame_sc.sig_index = raw_sc.sig - base;
signal_frame_sc.sc_index = raw_sc.sc - base;
signal_frame_sc.sr_index = raw_sc.sr - base;
if((*((unsigned long *) raw_sc.sr) & PAGE_MASK) ==
(unsigned long) sigstack){
unsigned long *sr = (unsigned long *) raw_sc.sr;
unsigned long frame = (unsigned long) signal_frame_sc.data;
signal_frame_sc.sr_relative = 1;
*sr -= raw_sc.sr;
*((unsigned long *) (frame + signal_frame_sc.sr_index)) = *sr;
}
else signal_frame_sc.sr_relative = 0;
signal_frame_sc.sp_index = raw_sc.sp - base;
setup_arch_frame(&raw_sc.arch, &signal_frame_sc.arch);
/* Repeat for the siginfo variant */
/* Ditto for the sigcontext, sigrestorer layout */
raw_sc.restorer = 1;
base = capture_stack_common(sc_child, &raw_sc, &raw_sc.common,
(void *) top, sigstack, PAGE_SIZE,
&signal_frame_sc_sr.common);
signal_frame_sc_sr.sc_index = raw_sc.sc - base;
/* And the siginfo layout */
raw_si.stack = sigstack;
raw_si.size = PAGE_SIZE;
signal_frame_si.len = capture_stack(si_child, &raw_si, (void *) top,
sig_top, &signal_frame_si.data);
base = sig_top - signal_frame_si.len;
signal_frame_si.sig_index = raw_si.sig - base;
base = capture_stack_common(si_child, &raw_si, &raw_si.common,
(void *) top, sigstack, PAGE_SIZE,
&signal_frame_si.common);
signal_frame_si.sip_index = raw_si.sip - base;
signal_frame_si.si_index = raw_si.si - base;
signal_frame_si.sr_index = raw_si.sr - base;
if((*((unsigned long *) raw_si.sr) & PAGE_MASK) ==
(unsigned long) sigstack){
unsigned long *sr = (unsigned long *) raw_si.sr;
unsigned long frame = (unsigned long) signal_frame_si.data;
signal_frame_sc.sr_relative = 1;
*sr -= raw_si.sr;
*((unsigned long *) (frame + signal_frame_si.sr_index)) = *sr;
}
else signal_frame_si.sr_relative = 0;
signal_frame_si.sp_index = raw_si.sp - base;
if((munmap(stack, PAGE_SIZE) < 0) ||
(munmap(sigstack, PAGE_SIZE) < 0)){
......@@ -277,14 +317,6 @@ void capture_signal_stack(void)
}
}
void set_sc_ip_sp(void *sc_ptr, unsigned long ip, unsigned long sp)
{
struct sigcontext *sc = sc_ptr;
SC_IP(sc) = ip;
SC_SP(sc) = sp;
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
......
arch/um/kernel/frame_kern.c
View file @ 0672b227
......@@ -9,20 +9,31 @@
#include "frame_kern.h"
#include "sigcontext.h"
#include "sysdep/ptrace.h"
#include "choose-mode.h"
#include "mode.h"
static int copy_restorer(void (*restorer)(void), unsigned long start,
unsigned long sr_index, int sr_relative)
{
if(restorer != 0){
if(copy_to_user((void *) (start + sr_index), &restorer,
sizeof(restorer)))
return(1);
}
else if(sr_relative){
unsigned long *sr = (unsigned long *) (start + sr_index);
*sr += (unsigned long) sr;
unsigned long sr;
if(sr_relative){
sr = (unsigned long) restorer;
sr += start + sr_index;
restorer = (void (*)(void)) sr;
}
return(0);
return(copy_to_user((void *) (start + sr_index), &restorer,
sizeof(restorer)));
}
static int copy_sc_to_user(void *to, struct pt_regs *from)
{
return(CHOOSE_MODE(copy_sc_to_user_tt(to, from->regs.mode.tt,
&signal_frame_sc_sr.arch),
copy_sc_to_user_skas(to, &from->regs,
current->thread.cr2,
current->thread.err)));
}
int setup_signal_stack_si(unsigned long stack_top, int sig,
......@@ -34,27 +45,30 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
void *sip;
int sig_size = _NSIG_WORDS * sizeof(unsigned long);
start = stack_top - signal_frame_si.len -
start = stack_top - signal_frame_si.common.len -
sc_size(&signal_frame_sc.arch) - sig_size;
sip = (void *) (start + signal_frame_si.si_index);
sc = start + signal_frame_si.len;
sc = start + signal_frame_si.common.len;
sigs = sc + sc_size(&signal_frame_sc.arch);
if(copy_sc_to_user((void *) sc, regs->regs.sc,
&signal_frame_sc.arch) ||
copy_to_user((void *) start, signal_frame_si.data,
signal_frame_si.len) ||
copy_to_user((void *) (start + signal_frame_si.sig_index), &sig,
sizeof(sig)) ||
if(restorer == NULL)
panic("setup_signal_stack_si - no restorer");
if(copy_sc_to_user((void *) sc, regs) ||
copy_to_user((void *) start, signal_frame_si.common.data,
signal_frame_si.common.len) ||
copy_to_user((void *) (start + signal_frame_si.common.sig_index),
&sig, sizeof(sig)) ||
copy_siginfo_to_user(sip, info) ||
copy_to_user((void *) (start + signal_frame_si.sip_index), &sip,
sizeof(sip)) ||
copy_to_user((void *) sigs, mask, sig_size) ||
copy_restorer(restorer, start, signal_frame_si.sr_index,
signal_frame_si.sr_relative))
copy_restorer(restorer, start, signal_frame_si.common.sr_index,
signal_frame_si.common.sr_relative))
return(1);
PT_REGS_IP(regs) = handler;
PT_REGS_SP(regs) = start + signal_frame_sc.sp_index;
PT_REGS_SP(regs) = start + signal_frame_sc.common.sp_index;
return(0);
}
......@@ -62,26 +76,35 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
unsigned long handler, void (*restorer)(void),
struct pt_regs *regs, sigset_t *mask)
{
struct frame_common *frame = &signal_frame_sc_sr.common;
void *user_sc;
int sig_size = (_NSIG_WORDS - 1) * sizeof(unsigned long);
unsigned long sigs, start = stack_top - signal_frame_sc.len - sig_size;
void *user_sc = (void *) (start + signal_frame_sc.sc_index);
unsigned long sigs, sr;
unsigned long start = stack_top - frame->len - sig_size;
user_sc = (void *) (start + signal_frame_sc_sr.sc_index);
if(restorer == NULL){
frame = &signal_frame_sc.common;
user_sc = (void *) (start + signal_frame_sc.sc_index);
sr = (unsigned long) frame->data;
sr += frame->sr_index;
sr = *((unsigned long *) sr);
restorer = ((void (*)(void)) sr);
}
sigs = start + signal_frame_sc.len;
if(copy_to_user((void *) start, signal_frame_sc.data,
signal_frame_sc.len) ||
copy_to_user((void *) (start + signal_frame_sc.sig_index), &sig,
sigs = start + frame->len;
if(copy_to_user((void *) start, frame->data, frame->len) ||
copy_to_user((void *) (start + frame->sig_index), &sig,
sizeof(sig)) ||
copy_sc_to_user(user_sc, regs->regs.sc, &signal_frame_sc.arch) ||
copy_sc_to_user(user_sc, regs) ||
copy_to_user(sc_sigmask(user_sc), mask, sizeof(mask->sig[0])) ||
copy_to_user((void *) sigs, &mask->sig[1], sig_size) ||
copy_restorer(restorer, start, signal_frame_sc.sr_index,
signal_frame_sc.sr_relative))
copy_restorer(restorer, start, frame->sr_index, frame->sr_relative))
return(1);
PT_REGS_IP(regs) = handler;
PT_REGS_SP(regs) = start + signal_frame_sc.sp_index;
PT_REGS_SP(regs) = start + frame->sp_index;
set_sc_ip_sp(regs->regs.sc, handler, start + signal_frame_sc.sp_index);
return(0);
}
......
arch/um/kernel/helper.c
View file @ 0672b227
......@@ -43,9 +43,12 @@ static int helper_child(void *arg)
execvp(argv[0], argv);
printk("execvp of '%s' failed - errno = %d\n", argv[0], errno);
write(data->fd, &errno, sizeof(errno));
_exit(1);
os_kill_process(os_getpid(), 0);
return(0);
}
/* XXX The alloc_stack here breaks if this is called in the tracing thread */
int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
unsigned long *stack_out)
{
......
arch/um/kernel/init_task.c
View file @ 0672b227
......@@ -47,7 +47,7 @@ struct task_struct *alloc_task_struct(void){
void unprotect_stack(unsigned long stack)
{
protect(stack, 4 * PAGE_SIZE, 1, 1, 0, 1);
protect_memory(stack, 4 * PAGE_SIZE, 1, 1, 0, 1);
}
void free_task_struct(struct task_struct *task)
......
arch/um/kernel/ksyms.c
View file @ 0672b227
/*
* Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/config.h"
#include "linux/module.h"
#include "linux/string.h"
......@@ -19,17 +24,13 @@
EXPORT_SYMBOL(stop);
EXPORT_SYMBOL(uml_physmem);
EXPORT_SYMBOL(set_signals);
EXPORT_SYMBOL(get_signals);
EXPORT_SYMBOL(kernel_thread);
EXPORT_SYMBOL(__const_udelay);
EXPORT_SYMBOL(__udelay);
EXPORT_SYMBOL(sys_waitpid);
EXPORT_SYMBOL(task_size);
EXPORT_SYMBOL(__do_copy_from_user);
EXPORT_SYMBOL(__do_copy_to_user);
EXPORT_SYMBOL(__do_strncpy_from_user);
EXPORT_SYMBOL(__do_strnlen_user);
EXPORT_SYMBOL(flush_tlb_range);
EXPORT_SYMBOL(__do_clear_user);
EXPORT_SYMBOL(honeypot);
EXPORT_SYMBOL(host_task_size);
EXPORT_SYMBOL(arch_validate);
......@@ -37,10 +38,10 @@ EXPORT_SYMBOL(region_pa);
EXPORT_SYMBOL(region_va);
EXPORT_SYMBOL(phys_mem_map);
EXPORT_SYMBOL(page_mem_map);
EXPORT_SYMBOL(get_signals);
EXPORT_SYMBOL(page_to_phys);
EXPORT_SYMBOL(phys_to_page);
EXPORT_SYMBOL(high_physmem);
EXPORT_SYMBOL(empty_zero_page);
EXPORT_SYMBOL(os_open_file);
EXPORT_SYMBOL(os_read_file);
......@@ -53,7 +54,6 @@ EXPORT_SYMBOL(helper_wait);
EXPORT_SYMBOL(os_shutdown_socket);
EXPORT_SYMBOL(os_connect_socket);
EXPORT_SYMBOL(run_helper);
EXPORT_SYMBOL(tracing_pid);
EXPORT_SYMBOL(start_thread);
EXPORT_SYMBOL(dump_thread);
......@@ -75,6 +75,7 @@ EXPORT_SYMBOL_NOVERS(__write_lock_failed);
extern void FASTCALL( __read_lock_failed(rwlock_t *rw));
EXPORT_SYMBOL_NOVERS(__read_lock_failed);
EXPORT_SYMBOL(smp_num_cpus);
#endif
#ifdef CONFIG_HIGHMEM
......
arch/um/kernel/mem.c
View file @ 0672b227
......@@ -25,6 +25,8 @@
#include "mem.h"
#include "kern.h"
#include "init.h"
#include "os.h"
#include "mode_kern.h"
/* Changed during early boot */
pgd_t swapper_pg_dir[1024];
......@@ -56,12 +58,12 @@ static unsigned long brk_end;
static void map_cb(void *unused)
{
map(brk_end, __pa(brk_end), uml_reserved - brk_end, 1, 1, 0);
map_memory(brk_end, __pa(brk_end), uml_reserved - brk_end, 1, 1, 0);
}
void unmap_physmem(void)
{
unmap((void *) brk_end, uml_reserved - brk_end);
os_unmap_memory((void *) brk_end, uml_reserved - brk_end);
}
extern char __binary_start;
......@@ -81,17 +83,17 @@ void mem_init(void)
/* Map in the area just after the brk now that kmalloc is about
* to be turned on.
*/
brk_end = (unsigned long) ROUND_UP(sbrk(0));
brk_end = (unsigned long) UML_ROUND_UP(sbrk(0));
map_cb(NULL);
tracing_cb(map_cb, NULL);
initial_thread_cb(map_cb, NULL);
free_bootmem(__pa(brk_end), uml_reserved - brk_end);
uml_reserved = brk_end;
/* Fill in any hole at the start of the binary */
start = (unsigned long) &__binary_start;
if(uml_physmem != start){
map(uml_physmem, __pa(uml_physmem), start - uml_physmem,
1, 1, 0);
map_memory(uml_physmem, __pa(uml_physmem), start - uml_physmem,
1, 1, 0);
}
/* this will put all low memory onto the freelists */
......@@ -106,6 +108,21 @@ void mem_init(void)
kmalloc_ok = 1;
}
/* Changed during early boot */
static unsigned long kmem_top = 0;
unsigned long get_kmem_end(void)
{
if(kmem_top == 0)
kmem_top = CHOOSE_MODE(kmem_end_tt, kmem_end_skas);
return(kmem_top);
}
void set_kmem_end(unsigned long new)
{
kmem_top = new;
}
#if CONFIG_HIGHMEM
/* Changed during early boot */
pte_t *kmap_pte;
......@@ -379,20 +396,6 @@ void show_mem(void)
printk("%d pages swap cached\n", cached);
}
/* Changed during early boot */
static unsigned long kmem_top = 0;
unsigned long get_kmem_end(void)
{
if(kmem_top == 0) kmem_top = host_task_size - ABOVE_KMEM;
return(kmem_top);
}
void set_kmem_end(unsigned long new)
{
kmem_top = new;
}
static int __init uml_mem_setup(char *line, int *add)
{
char *retptr;
......@@ -411,28 +414,8 @@ __uml_setup("mem=", uml_mem_setup,
struct page *arch_validate(struct page *page, int mask, int order)
{
unsigned long addr, zero = 0;
int i;
again:
if(page == NULL) return(page);
if(PageHighMem(page)) return(page);
addr = (unsigned long) page_address(page);
for(i = 0; i < (1 << order); i++){
current->thread.fault_addr = (void *) addr;
if(__do_copy_to_user((void *) addr, &zero,
sizeof(zero),
&current->thread.fault_addr,
&current->thread.fault_catcher)){
if(!(mask & __GFP_WAIT)) return(NULL);
else break;
}
addr += PAGE_SIZE;
}
if(i == (1 << order)) return(page);
page = alloc_pages(mask, order);
goto again;
return(CHOOSE_MODE_PROC(arch_validate_tt, arch_validate_skas, page,
mask, order));
}
DECLARE_MUTEX(vm_reserved_sem);
......@@ -513,7 +496,7 @@ unsigned long get_vm(unsigned long len)
return(0);
found:
up(&vm_reserved_sem);
start = (unsigned long) ROUND_UP(this->end) + PAGE_SIZE;
start = (unsigned long) UML_ROUND_UP(this->end) + PAGE_SIZE;
err = reserve_vm(start, start + len, NULL);
if(err) return(0);
return(start);
......@@ -562,7 +545,7 @@ struct iomem iomem_regions[NREGIONS] = { [ 0 ... NREGIONS - 1 ] =
int num_iomem_regions = 0;
void add_iomem(char *name, int fd, int size)
void add_iomem(char *name, int fd, unsigned long size)
{
if(num_iomem_regions == sizeof(iomem_regions)/sizeof(iomem_regions[0]))
return;
......
arch/um/kernel/mem_user.c
View file @ 0672b227
......@@ -181,44 +181,22 @@ void log(char *fmt, ...)
}
#endif
void map(unsigned long virt, unsigned long phys, unsigned long len,
int r, int w, int x)
int map_memory(unsigned long virt, unsigned long phys, unsigned long len,
int r, int w, int x)
{
struct mem_region *region;
void *loc;
int prot;
prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) |
(x ? PROT_EXEC : 0);
region = phys_region(phys);
loc = mmap((void *) virt, len, prot, MAP_SHARED | MAP_FIXED,
region->fd, phys_offset(phys));
if(loc != (void *) virt){
panic("Error mapping a page - errno = %d", errno);
}
}
int unmap(void *addr, int len)
{
int err;
struct mem_region *region = phys_region(phys);
err = munmap(addr, len);
if(err < 0) return(-errno);
else return(err);
return(os_map_memory((void *) virt, region->fd, phys_offset(phys), len,
r, w, x));
}
int protect(unsigned long addr, unsigned long len, int r, int w, int x,
int must_succeed)
int protect_memory(unsigned long addr, unsigned long len, int r, int w, int x,
int must_succeed)
{
int prot;
prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) |
(x ? PROT_EXEC : 0);
if(mprotect((void *) addr, len, prot) == -1){
if(must_succeed)
panic("protect failed, errno = %d", errno);
else return(-errno);
if(os_protect_memory((void *) addr, len, r, w, x) < 0){
if(must_succeed)
panic("protect failed, errno = %d", errno);
else return(-errno);
}
return(0);
}
......
arch/um/kernel/process.c
View file @ 0672b227
......@@ -21,9 +21,6 @@
#include <asm/sigcontext.h>
#include <asm/unistd.h>
#include <asm/page.h>
#ifdef PROFILING
#include <sys/gmon.h>
#endif
#include "user_util.h"
#include "kern_util.h"
#include "user.h"
......@@ -33,13 +30,19 @@
#include "sysdep/ptrace.h"
#include "sysdep/sigcontext.h"
#include "irq_user.h"
#include "syscall_user.h"
#include "ptrace_user.h"
#include "time_user.h"
#include "init.h"
#include "os.h"
#include "uml-config.h"
#include "choose-mode.h"
#include "mode.h"
#ifdef CONFIG_MODE_SKAS
#include "skas_ptrace.h"
#include "skas.h"
#endif
void init_new_thread(void *sig_stack, void (*usr1_handler)(int))
void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int))
{
int flags = 0;
......@@ -47,6 +50,13 @@ void init_new_thread(void *sig_stack, void (*usr1_handler)(int))
set_sigstack(sig_stack, 2 * page_size());
flags = SA_ONSTACK;
}
if(usr1_handler) set_handler(SIGUSR1, usr1_handler, flags, -1);
}
void init_new_thread_signals(int altstack)
{
int flags = altstack ? SA_ONSTACK : 0;
set_handler(SIGSEGV, (__sighandler_t) sig_handler, flags,
SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
set_handler(SIGTRAP, (__sighandler_t) sig_handler, flags,
......@@ -61,11 +71,10 @@ void init_new_thread(void *sig_stack, void (*usr1_handler)(int))
SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
set_handler(SIGUSR2, (__sighandler_t) sig_handler,
SA_NOMASK | flags, -1);
if(usr1_handler) set_handler(SIGUSR1, usr1_handler, flags, -1);
signal(SIGCHLD, SIG_IGN);
(void) CHOOSE_MODE(signal(SIGCHLD, SIG_IGN), (void *) 0);
signal(SIGHUP, SIG_IGN);
init_irq_signals(sig_stack != NULL);
init_irq_signals(altstack);
}
struct tramp {
......@@ -122,32 +131,6 @@ int start_fork_tramp(void *thread_arg, unsigned long temp_stack,
return(arg.pid);
}
void trace_myself(void)
{
if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0)
panic("ptrace failed in trace_myself");
}
void attach_process(int pid)
{
if((ptrace(PTRACE_ATTACH, pid, 0, 0) < 0) ||
(ptrace(PTRACE_CONT, pid, 0, 0) < 0))
tracer_panic("OP_FORK failed to attach pid");
wait_for_stop(pid, SIGSTOP, PTRACE_CONT, NULL);
if(ptrace(PTRACE_CONT, pid, 0, 0) < 0)
tracer_panic("OP_FORK failed to continue process");
}
void tracer_panic(char *format, ...)
{
va_list ap;
va_start(ap, format);
vprintf(format, ap);
printf("\n");
while(1) sleep(10);
}
void suspend_new_thread(int fd)
{
char c;
......@@ -164,19 +147,18 @@ static int ptrace_child(void *arg)
if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){
perror("ptrace");
_exit(1);
os_kill_process(pid, 0);
}
os_stop_process(pid);
_exit(os_getpid() == pid);
}
void __init check_ptrace(void)
static int start_ptraced_child(void **stack_out)
{
void *stack;
unsigned long sp;
int status, pid, n, syscall;
printk("Checking that ptrace can change system call numbers...");
int pid, n, status;
stack = mmap(NULL, PAGE_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if(stack == MAP_FAILED)
......@@ -191,6 +173,33 @@ void __init check_ptrace(void)
if(!WIFSTOPPED(status) || (WSTOPSIG(status) != SIGSTOP))
panic("check_ptrace : expected SIGSTOP, got status = %d",
status);
*stack_out = stack;
return(pid);
}
static void stop_ptraced_child(int pid, void *stack, int exitcode)
{
int status, n;
if(ptrace(PTRACE_CONT, pid, 0, 0) < 0)
panic("check_ptrace : ptrace failed, errno = %d", errno);
n = waitpid(pid, &status, 0);
if(!WIFEXITED(status) || (WEXITSTATUS(status) != exitcode))
panic("check_ptrace : child exited with status 0x%x", status);
if(munmap(stack, PAGE_SIZE) < 0)
panic("check_ptrace : munmap failed, errno = %d", errno);
}
void __init check_ptrace(void)
{
void *stack;
int pid, syscall, n, status;
printk("Checking that ptrace can change system call numbers...");
pid = start_ptraced_child(&stack);
while(1){
if(ptrace(PTRACE_SYSCALL, pid, 0, 0) < 0)
panic("check_ptrace : ptrace failed, errno = %d",
......@@ -213,23 +222,19 @@ void __init check_ptrace(void)
break;
}
}
if(ptrace(PTRACE_CONT, pid, 0, 0) < 0)
panic("check_ptrace : ptrace failed, errno = %d", errno);
n = waitpid(pid, &status, 0);
if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0))
panic("check_ptrace : child exited with status 0x%x", status);
if(munmap(stack, PAGE_SIZE) < 0)
panic("check_ptrace : munmap failed, errno = %d", errno);
stop_ptraced_child(pid, stack, 0);
printk("OK\n");
}
int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr)
{
jmp_buf buf;
int n;
*jmp_ptr = &buf;
if(setjmp(buf)) return(1);
n = setjmp(buf);
if(n != 0)
return(n);
(*fn)(arg);
return(0);
}
......@@ -244,6 +249,41 @@ void forward_pending_sigio(int target)
kill(target, SIGIO);
}
int can_do_skas(void)
{
#ifdef CONFIG_MODE_SKAS
struct ptrace_faultinfo fi;
void *stack;
int pid, n, ret = 1;
printk("Checking for the skas3 patch in the host...");
pid = start_ptraced_child(&stack);
n = ptrace(PTRACE_FAULTINFO, pid, 0, &fi);
if(n < 0){
if(errno == EIO)
printk("not found\n");
else printk("No (unexpected errno - %d)\n", errno);
ret = 0;
}
else printk("found\n");
init_registers(pid);
stop_ptraced_child(pid, stack, 1);
printk("Checking for /proc/mm...");
if(access("/proc/mm", W_OK)){
printk("not found\n");
ret = 0;
}
else printk("found\n");
return(ret);
#else
return(0);
#endif
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
......
arch/um/kernel/process_kern.c
View file @ 0672b227
This diff is collapsed.
arch/um/kernel/ptrace.c
View file @ 0672b227
......@@ -9,6 +9,7 @@
#include "linux/smp_lock.h"
#include "linux/security.h"
#include "linux/ptrace.h"
#include "linux/proc_mm.h"
#include "asm/ptrace.h"
#include "asm/uaccess.h"
#include "kern_util.h"
......@@ -21,6 +22,11 @@ void ptrace_disable(struct task_struct *child)
{
}
extern long do_mmap2(struct task_struct *task, unsigned long addr,
unsigned long len, unsigned long prot,
unsigned long flags, unsigned long fd,
unsigned long pgoff);
int sys_ptrace(long request, long pid, long addr, long data)
{
struct task_struct *child;
......@@ -182,13 +188,13 @@ int sys_ptrace(long request, long pid, long addr, long data)
#ifdef PTRACE_GETREGS
case PTRACE_GETREGS: { /* Get all gp regs from the child. */
if (!access_ok(VERIFY_WRITE, (unsigned *)data,
if (!access_ok(VERIFY_WRITE, (unsigned long *)data,
FRAME_SIZE_OFFSET)) {
ret = -EIO;
break;
}
for ( i = 0; i < FRAME_SIZE_OFFSET; i += sizeof(long) ) {
__put_user(getreg(child, i),(unsigned long *) data);
__put_user(getreg(child, i), (unsigned long *) data);
data += sizeof(long);
}
ret = 0;
......@@ -231,6 +237,57 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SETFPXREGS: /* Set the child FPU state. */
ret = set_fpxregs(data, child);
break;
#endif
case PTRACE_FAULTINFO: {
struct ptrace_faultinfo fault;
fault = ((struct ptrace_faultinfo)
{ .is_write = child->thread.err,
.addr = child->thread.cr2 });
ret = copy_to_user((unsigned long *) data, &fault,
sizeof(fault));
if(ret)
break;
break;
}
case PTRACE_SIGPENDING:
ret = copy_to_user((unsigned long *) data,
&child->pending.signal,
sizeof(child->pending.signal));
break;
case PTRACE_LDT: {
struct ptrace_ldt ldt;
if(copy_from_user(&ldt, (unsigned long *) data,
sizeof(ldt))){
ret = -EIO;
break;
}
/* This one is confusing, so just punt and return -EIO for
* now
*/
ret = -EIO;
break;
}
#ifdef CONFIG_PROC_MM
case PTRACE_SWITCH_MM: {
struct mm_struct *old = child->mm;
struct mm_struct *new = proc_mm_get_mm(data);
if(IS_ERR(new)){
ret = PTR_ERR(new);
break;
}
atomic_inc(&new->mm_users);
child->mm = new;
child->active_mm = new;
mmput(old);
ret = 0;
break;
}
#endif
default:
ret = -EIO;
......
arch/um/kernel/reboot.c
View file @ 0672b227
......@@ -8,6 +8,8 @@
#include "kern_util.h"
#include "kern.h"
#include "os.h"
#include "mode.h"
#include "choose-mode.h"
#ifdef CONFIG_SMP
static void kill_idlers(int me)
......@@ -17,26 +19,17 @@ static void kill_idlers(int me)
for(i = 0; i < sizeof(idle_threads)/sizeof(idle_threads[0]); i++){
p = idle_threads[i];
if((p != NULL) && (p->thread.extern_pid != me))
os_kill_process(p->thread.extern_pid);
if((p != NULL) && (p->thread.mode.tt.extern_pid != me))
os_kill_process(p->thread.mode.tt.extern_pid, 0);
}
}
#endif
static void kill_off_processes(void)
{
struct task_struct *p;
int me;
me = os_getpid();
for_each_process(p){
if(p->thread.extern_pid != me)
os_kill_process(p->thread.extern_pid);
}
if(init_task.thread.extern_pid != me)
os_kill_process(init_task.thread.extern_pid);
CHOOSE_MODE(kill_off_processes_tt(), kill_off_processes_skas());
#ifdef CONFIG_SMP
kill_idlers(me);
kill_idlers(os_getpid());
#endif
}
......@@ -50,16 +43,14 @@ void machine_restart(char * __unused)
{
do_uml_exitcalls();
kill_off_processes();
tracing_reboot();
os_kill_process(os_getpid());
CHOOSE_MODE(reboot_tt(), reboot_skas());
}
void machine_power_off(void)
{
do_uml_exitcalls();
kill_off_processes();
tracing_halt();
os_kill_process(os_getpid());
CHOOSE_MODE(halt_tt(), halt_skas());
}
void machine_halt(void)
......
arch/um/kernel/sigio_user.c
View file @ 0672b227
......@@ -39,14 +39,13 @@ struct openpty_arg {
int err;
};
static int openpty_cb(void *arg)
static void openpty_cb(void *arg)
{
struct openpty_arg *info = arg;
info->err = 0;
if(openpty(&info->master, &info->slave, NULL, NULL, NULL))
info->err = errno;
return(0);
}
void __init check_one_sigio(void (*proc)(int, int))
......@@ -54,13 +53,9 @@ void __init check_one_sigio(void (*proc)(int, int))
struct sigaction old, new;
struct termios tt;
struct openpty_arg pty = { master : -1, slave : -1 };
int master, slave, flags, err;
int master, slave, flags;
err = run_helper_thread(openpty_cb, &pty, CLONE_FILES, NULL, 2);
if(err < 0){
printk("run_helper_thread failed, errno = %d\n", -err);
return;
}
initial_thread_cb(openpty_cb, &pty);
if(pty.err){
printk("openpty failed, errno = %d\n", pty.err);
return;
......@@ -387,7 +382,7 @@ void write_sigio_workaround(void)
goto out_close2;
write_sigio_pid = run_helper_thread(write_sigio_thread, NULL,
CLONE_FILES, &stack, 0);
CLONE_FILES | CLONE_VM, &stack, 0);
if(write_sigio_pid < 0) goto out_close2;
......
arch/um/kernel/signal_kern.c
View file @ 0672b227
......@@ -24,6 +24,7 @@
#include "kern.h"
#include "frame_kern.h"
#include "sigcontext.h"
#include "mode.h"
EXPORT_SYMBOL(block_signals);
EXPORT_SYMBOL(unblock_signals);
......@@ -179,7 +180,7 @@ static int kern_do_signal(struct pt_regs *regs, sigset_t *oldset, int error)
*/
if((current->ptrace & PT_DTRACE) &&
is_syscall(PT_REGS_IP(&current->thread.regs)))
current->thread.singlestep_syscall = 1;
(void) CHOOSE_MODE(current->thread.mode.tt.singlestep_syscall = 1, 0);
return(0);
}
......@@ -236,6 +237,16 @@ int sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize)
}
}
static int copy_sc_from_user(struct pt_regs *to, void *from)
{
int ret;
ret = CHOOSE_MODE(copy_sc_from_user_tt(to->regs.mode.tt, from,
&signal_frame_sc.arch),
copy_sc_from_user_skas(&to->regs, from));
return(ret);
}
int sys_sigreturn(struct pt_regs regs)
{
void *sc = sp_to_sc(PT_REGS_SP(&regs));
......@@ -249,8 +260,7 @@ int sys_sigreturn(struct pt_regs regs)
sigdelsetmask(&current->blocked, ~_BLOCKABLE);
recalc_sigpending();
spin_unlock_irq(&current->sig->siglock);
copy_sc_from_user(current->thread.regs.regs.sc, sc,
&signal_frame_sc.arch);
copy_sc_from_user(&current->thread.regs, sc);
return(PT_REGS_SYSCALL_RET(&current->thread.regs));
}
......@@ -265,8 +275,7 @@ int sys_rt_sigreturn(struct pt_regs regs)
sigdelsetmask(&current->blocked, ~_BLOCKABLE);
recalc_sigpending();
spin_unlock_irq(&current->sig->siglock);
copy_sc_from_user(current->thread.regs.regs.sc, sc,
&signal_frame_sc.arch);
copy_sc_from_user(&current->thread.regs, sc);
return(PT_REGS_SYSCALL_RET(&current->thread.regs));
}
......
arch/um/kernel/signal_user.c
View file @ 0672b227
......@@ -21,13 +21,12 @@
void set_sigstack(void *sig_stack, int size)
{
stack_t stack;
stack_t stack = ((stack_t) { .ss_flags = 0,
.ss_sp = (__ptr_t) sig_stack,
.ss_size = size - sizeof(void *) });
stack.ss_sp = (__ptr_t) sig_stack;
stack.ss_flags = 0;
stack.ss_size = size - sizeof(void *);
if(sigaltstack(&stack, NULL) != 0)
panic("sigaltstack failed");
panic("enabling signal stack failed, errno = %d\n", errno);
}
void set_handler(int sig, void (*handler)(int), int flags, ...)
......
arch/um/kernel/skas/Makefile 0 → 100644
View file @ 0672b227
#
# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
# Licensed under the GPL
#
obj-y = exec_kern.o exec_user.o mem.o mem_user.o mmu.o process.o \
process_kern.o syscall_kern.o syscall_user.o time.o tlb.o trap_user.o \
sys-$(SUBARCH)/
USER_OBJS = $(filter %_user.o,$(obj-y)) process.o time.o
USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
include/skas_ptregs.h : util/mk_ptregs
util/mk_ptregs > $@
util/mk_ptregs :
$(MAKE) -C util
$(USER_OBJS) : %.o: %.c
$(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $<
clean :
$(MAKE) -C util clean
$(RM) -f include/skas_ptregs.h
arch/um/kernel/skas/exec_kern.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/kernel.h"
#include "asm/current.h"
#include "asm/page.h"
#include "asm/signal.h"
#include "asm/ptrace.h"
#include "asm/uaccess.h"
#include "asm/mmu_context.h"
#include "tlb.h"
#include "skas.h"
#include "mmu.h"
#include "os.h"
void flush_thread_skas(void)
{
force_flush_all();
switch_mm_skas(current->mm->context.skas.mm_fd);
}
void start_thread_skas(struct pt_regs *regs, unsigned long eip,
unsigned long esp)
{
set_fs(USER_DS);
PT_REGS_IP(regs) = eip;
PT_REGS_SP(regs) = esp;
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/exec_user.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <stdlib.h>
#include <errno.h>
#include <signal.h>
#include <sched.h>
#include <sys/wait.h>
#include <sys/ptrace.h>
#include "user.h"
#include "kern_util.h"
#include "os.h"
#include "time_user.h"
static int user_thread_tramp(void *arg)
{
if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0)
panic("user_thread_tramp - PTRACE_TRACEME failed, "
"errno = %d\n", errno);
enable_timer();
os_stop_process(os_getpid());
return(0);
}
int user_thread(unsigned long stack, int flags)
{
int pid, status;
pid = clone(user_thread_tramp, (void *) stack_sp(stack),
flags | CLONE_FILES | SIGCHLD, NULL);
if(pid < 0){
printk("user_thread - clone failed, errno = %d\n", errno);
return(pid);
}
if(waitpid(pid, &status, WUNTRACED) < 0){
printk("user_thread - waitpid failed, errno = %d\n", errno);
return(-errno);
}
if(!WIFSTOPPED(status) || (WSTOPSIG(status) != SIGSTOP)){
printk("user_thread - trampoline didn't stop, status = %d\n",
status);
return(-EINVAL);
}
return(pid);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/include/mmu.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SKAS_MMU_H
#define __SKAS_MMU_H
#include "linux/list.h"
#include "linux/spinlock.h"
struct mmu_context_skas {
int mm_fd;
};
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/include/mode.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __MODE_SKAS_H__
#define __MODE_SKAS_H__
extern unsigned long exec_regs[];
extern unsigned long exec_fp_regs[];
extern unsigned long exec_fpx_regs[];
extern int have_fpx_regs;
extern void user_time_init_skas(void);
extern int copy_sc_from_user_skas(struct uml_pt_regs *regs, void *from_ptr);
extern int copy_sc_to_user_skas(void *to_ptr, struct uml_pt_regs *regs,
unsigned long fault_addr, int fault_type);
extern void sig_handler_common_skas(int sig, struct sigcontext *sc);
extern void halt_skas(void);
extern void reboot_skas(void);
extern void kill_off_processes_skas(void);
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/include/mode_kern.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SKAS_MODE_KERN_H__
#define __SKAS_MODE_KERN_H__
#include "linux/sched.h"
#include "asm/page.h"
#include "asm/ptrace.h"
extern void flush_thread_skas(void);
extern void *switch_to_skas(void *prev, void *next);
extern void start_thread_skas(struct pt_regs *regs, unsigned long eip,
unsigned long esp);
extern int copy_thread_skas(int nr, unsigned long clone_flags,
unsigned long sp, unsigned long stack_top,
struct task_struct *p, struct pt_regs *regs);
extern void release_thread_skas(struct task_struct *task);
extern void exit_thread_skas(void);
extern void initial_thread_cb_skas(void (*proc)(void *), void *arg);
extern void init_idle_skas(void);
extern void flush_tlb_kernel_vm_skas(void);
extern void __flush_tlb_one_skas(unsigned long addr);
extern void flush_tlb_range_skas(struct vm_area_struct *vma,
unsigned long start, unsigned long end);
extern void flush_tlb_mm_skas(struct mm_struct *mm);
extern void force_flush_all_skas(void);
extern long execute_syscall_skas(void *r);
extern void before_mem_skas(unsigned long unused);
extern unsigned long set_task_sizes_skas(int arg, unsigned long *host_size_out,
unsigned long *task_size_out);
extern int start_uml_skas(void);
extern struct page *arch_validate_skas(struct page *page, int mask, int order);
extern int external_pid_skas(struct task_struct *task);
extern int thread_pid_skas(struct task_struct *task);
#define kmem_end_skas (host_task_size)
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/include/proc_mm.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SKAS_PROC_MM_H
#define __SKAS_PROC_MM_H
#define MM_MMAP 54
#define MM_MUNMAP 55
#define MM_MPROTECT 56
#define MM_COPY_SEGMENTS 57
struct mm_mmap {
unsigned long addr;
unsigned long len;
unsigned long prot;
unsigned long flags;
unsigned long fd;
unsigned long offset;
};
struct mm_munmap {
unsigned long addr;
unsigned long len;
};
struct mm_mprotect {
unsigned long addr;
unsigned long len;
unsigned int prot;
};
struct proc_mm_op {
int op;
union {
struct mm_mmap mmap;
struct mm_munmap munmap;
struct mm_mprotect mprotect;
int copy_segments;
} u;
};
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/include/ptrace-skas.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __PTRACE_SKAS_H
#define __PTRACE_SKAS_H
#include "uml-config.h"
#ifdef CONFIG_MODE_SKAS
#include "skas_ptregs.h"
#define HOST_FRAME_SIZE 17
#define REGS_IP(r) ((r)[HOST_IP])
#define REGS_SP(r) ((r)[HOST_SP])
#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
#define REGS_EAX(r) ((r)[HOST_EAX])
#define REGS_EBX(r) ((r)[HOST_EBX])
#define REGS_ECX(r) ((r)[HOST_ECX])
#define REGS_EDX(r) ((r)[HOST_EDX])
#define REGS_ESI(r) ((r)[HOST_ESI])
#define REGS_EDI(r) ((r)[HOST_EDI])
#define REGS_EBP(r) ((r)[HOST_EBP])
#define REGS_CS(r) ((r)[HOST_CS])
#define REGS_SS(r) ((r)[HOST_SS])
#define REGS_DS(r) ((r)[HOST_DS])
#define REGS_ES(r) ((r)[HOST_ES])
#define REGS_FS(r) ((r)[HOST_FS])
#define REGS_GS(r) ((r)[HOST_GS])
#define REGS_SET_SYSCALL_RETURN(r, res) REGS_EAX(r) = (res)
#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))
#define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type)
#define REGS_FAULT_ADDR(r) ((r)->fault_addr)
#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type)
#endif
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/include/skas.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SKAS_H
#define __SKAS_H
#include "sysdep/ptrace.h"
extern int userspace_pid;
extern void switch_threads(void *me, void *next);
extern void thread_wait(void *sw, void *fb);
extern void new_thread(void *stack, void **switch_buf_ptr, void **fork_buf_ptr,
void (*handler)(int));
extern int start_idle_thread(void *stack, void *switch_buf_ptr,
void **fork_buf_ptr);
extern int user_thread(unsigned long stack, int flags);
extern void userspace(struct uml_pt_regs *regs);
extern void new_thread_proc(void *stack, void (*handler)(int sig));
extern void remove_sigstack(void);
extern void new_thread_handler(int sig);
extern void handle_syscall(struct uml_pt_regs *regs);
extern void map(int fd, unsigned long virt, unsigned long phys,
unsigned long len, int r, int w, int x);
extern int unmap(int fd, void *addr, int len);
extern int protect(int fd, unsigned long addr, unsigned long len,
int r, int w, int x, int must_succeed);
extern void user_signal(int sig, struct uml_pt_regs *regs);
extern int singlestepping_skas(void);
extern int new_mm(int from);
extern void save_registers(struct uml_pt_regs *regs);
extern void restore_registers(struct uml_pt_regs *regs);
extern void start_userspace(void);
extern void init_registers(int pid);
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/include/skas_ptrace.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SKAS_PTRACE_H
#define __SKAS_PTRACE_H
struct ptrace_faultinfo {
int is_write;
unsigned long addr;
};
struct ptrace_ldt {
int func;
void *ptr;
unsigned long bytecount;
};
#define PTRACE_FAULTINFO 52
#define PTRACE_SIGPENDING 53
#define PTRACE_LDT 54
#define PTRACE_SWITCH_MM 55
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/include/uaccess.h 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SKAS_UACCESS_H
#define __SKAS_UACCESS_H
#include "linux/string.h"
#include "linux/sched.h"
#include "linux/err.h"
#include "asm/processor.h"
#include "asm/pgtable.h"
#include "asm/errno.h"
#include "asm/current.h"
#include "asm/a.out.h"
#include "kern_util.h"
#define access_ok_skas(type, addr, size) \
((segment_eq(get_fs(), KERNEL_DS)) || \
(((unsigned long) (addr) < TASK_SIZE) && \
((unsigned long) (addr) + (size) < TASK_SIZE)))
static inline int verify_area_skas(int type, const void * addr,
unsigned long size)
{
return(access_ok_skas(type, addr, size) ? 0 : -EFAULT);
}
extern void *um_virt_to_phys(struct task_struct *task, unsigned long virt,
pte_t *pte_out);
static inline unsigned long maybe_map(unsigned long virt, int is_write)
{
pte_t pte;
void *phys = um_virt_to_phys(current, virt, &pte);
int dummy_code;
if(IS_ERR(phys) || (is_write && !pte_write(pte))){
if(handle_page_fault(virt, 0, is_write, 0, &dummy_code))
return(0);
phys = um_virt_to_phys(current, virt, NULL);
}
return((unsigned long) __va((unsigned long) phys));
}
static inline int buffer_op(unsigned long addr, int len,
int (*op)(unsigned long addr, int len, void *arg),
void *arg)
{
int size = min(PAGE_ALIGN(addr) - addr, (unsigned long) len);
int remain = len, n;
n = (*op)(addr, size, arg);
if(n != 0)
return(n < 0 ? remain : 0);
addr += size;
remain -= size;
if(remain == 0)
return(0);
while(addr < ((addr + remain) & PAGE_MASK)){
n = (*op)(addr, PAGE_SIZE, arg);
if(n != 0)
return(n < 0 ? remain : 0);
addr += PAGE_SIZE;
remain -= PAGE_SIZE;
}
if(remain == 0)
return(0);
n = (*op)(addr, remain, arg);
if(n != 0)
return(n < 0 ? remain : 0);
return(0);
}
static inline int copy_chunk_from_user(unsigned long from, int len, void *arg)
{
unsigned long *to_ptr = arg, to = *to_ptr;
from = maybe_map(from, 0);
if(from == 0)
return(-1);
memcpy((void *) to, (void *) from, len);
*to_ptr += len;
return(0);
}
static inline int copy_from_user_skas(void *to, const void *from, int n)
{
if(segment_eq(get_fs(), KERNEL_DS)){
memcpy(to, from, n);
return(0);
}
return(access_ok_skas(VERIFY_READ, from, n) ?
buffer_op((unsigned long) from, n, copy_chunk_from_user, &to) :
n);
}
static inline int copy_chunk_to_user(unsigned long to, int len, void *arg)
{
unsigned long *from_ptr = arg, from = *from_ptr;
to = maybe_map(to, 1);
if(to == 0)
return(-1);
memcpy((void *) to, (void *) from, len);
*from_ptr += len;
return(0);
}
static inline int copy_to_user_skas(void *to, const void *from, int n)
{
if(segment_eq(get_fs(), KERNEL_DS)){
memcpy(to, from, n);
return(0);
}
return(access_ok_skas(VERIFY_WRITE, to, n) ?
buffer_op((unsigned long) to, n, copy_chunk_to_user, &from) :
n);
}
static inline int strncpy_chunk_from_user(unsigned long from, int len,
void *arg)
{
char **to_ptr = arg, *to = *to_ptr;
int n;
from = maybe_map(from, 0);
if(from == 0)
return(-1);
strncpy(to, (void *) from, len);
n = strnlen(to, len);
*to_ptr += n;
if(n < len)
return(1);
return(0);
}
static inline int strncpy_from_user_skas(char *dst, const char *src, int count)
{
int n;
char *ptr = dst;
if(segment_eq(get_fs(), KERNEL_DS)){
strncpy(dst, src, count);
return(strnlen(dst, count));
}
if(!access_ok_skas(VERIFY_READ, src, 1))
return(-EFAULT);
n = buffer_op((unsigned long) src, count, strncpy_chunk_from_user,
&ptr);
if(n != 0)
return(-EFAULT);
return(strnlen(dst, count));
}
static inline int clear_chunk(unsigned long addr, int len, void *unused)
{
addr = maybe_map(addr, 1);
if(addr == 0)
return(-1);
memset((void *) addr, 0, len);
return(0);
}
static inline int __clear_user_skas(void *mem, int len)
{
return(buffer_op((unsigned long) mem, len, clear_chunk, NULL));
}
static inline int clear_user_skas(void *mem, int len)
{
if(segment_eq(get_fs(), KERNEL_DS)){
memset(mem, 0, len);
return(0);
}
return(access_ok_skas(VERIFY_WRITE, mem, len) ?
buffer_op((unsigned long) mem, len, clear_chunk, NULL) : len);
}
static inline int strnlen_chunk(unsigned long str, int len, void *arg)
{
int *len_ptr = arg, n;
str = maybe_map(str, 0);
if(str == 0)
return(-1);
n = strnlen((void *) str, len);
*len_ptr += n;
if(n < len)
return(1);
return(0);
}
static inline int strnlen_user_skas(const void *str, int len)
{
int count = 0, n;
if(segment_eq(get_fs(), KERNEL_DS))
return(strnlen(str, len) + 1);
n = buffer_op((unsigned long) str, len, strnlen_chunk, &count);
if(n == 0)
return(count + 1);
return(-EFAULT);
}
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/mem.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/config.h"
#include "linux/mm.h"
#include "mem_user.h"
unsigned long set_task_sizes_skas(int arg, unsigned long *host_size_out,
unsigned long *task_size_out)
{
/* Round up to the nearest 4M */
unsigned long top = ROUND_4M((unsigned long) &arg);
*host_size_out = top;
*task_size_out = top;
return(((unsigned long) set_task_sizes_skas) & ~0xffffff);
}
struct page *arch_validate_skas(struct page *page, int mask, int order)
{
return(page);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/mem_user.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <errno.h>
#include <sys/mman.h>
#include <sys/ptrace.h>
#include "mem_user.h"
#include "user.h"
#include "os.h"
#include "proc_mm.h"
void map(int fd, unsigned long virt, unsigned long phys, unsigned long len,
int r, int w, int x)
{
struct proc_mm_op map;
struct mem_region *region;
int prot, n;
prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) |
(x ? PROT_EXEC : 0);
region = phys_region(phys);
map = ((struct proc_mm_op) { .op = MM_MMAP,
.u =
{ .mmap =
{ .addr = virt,
.len = len,
.prot = prot,
.flags = MAP_SHARED |
MAP_FIXED,
.fd = region->fd,
.offset = phys_offset(phys)
} } } );
n = os_write_file(fd, (char *) &map, sizeof(map));
if(n != sizeof(map))
printk("map : /proc/mm map failed, errno = %d\n", errno);
}
int unmap(int fd, void *addr, int len)
{
struct proc_mm_op unmap;
int n;
unmap = ((struct proc_mm_op) { .op = MM_MUNMAP,
.u =
{ .munmap =
{ .addr = (unsigned long) addr,
.len = len } } } );
n = os_write_file(fd, (char *) &unmap, sizeof(unmap));
if((n != 0) && (n != sizeof(unmap)))
return(-errno);
return(0);
}
int protect(int fd, unsigned long addr, unsigned long len, int r, int w,
int x, int must_succeed)
{
struct proc_mm_op protect;
int prot, n;
prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) |
(x ? PROT_EXEC : 0);
protect = ((struct proc_mm_op) { .op = MM_MPROTECT,
.u =
{ .mprotect =
{ .addr = (unsigned long) addr,
.len = len,
.prot = prot } } } );
n = os_write_file(fd, (char *) &protect, sizeof(protect));
if((n != 0) && (n != sizeof(protect))){
if(must_succeed)
panic("protect failed, errno = %d", errno);
return(-errno);
}
return(0);
}
void before_mem_skas(unsigned long unused)
{
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/mmu.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/sched.h"
#include "linux/list.h"
#include "linux/spinlock.h"
#include "linux/slab.h"
#include "asm/current.h"
#include "asm/segment.h"
#include "asm/mmu.h"
#include "os.h"
#include "skas.h"
int init_new_context_skas(struct task_struct *task, struct mm_struct *mm)
{
int from;
if((current->mm != NULL) && (current->mm != &init_mm))
from = current->mm->context.skas.mm_fd;
else from = -1;
mm->context.skas.mm_fd = new_mm(from);
if(mm->context.skas.mm_fd < 0)
panic("init_new_context_skas - new_mm failed, errno = %d\n",
mm->context.skas.mm_fd);
return(0);
}
void destroy_context_skas(struct mm_struct *mm)
{
os_close_file(mm->context.skas.mm_fd);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/process.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <stdlib.h>
#include <errno.h>
#include <signal.h>
#include <setjmp.h>
#include <sched.h>
#include <sys/wait.h>
#include <sys/ptrace.h>
#include <sys/mman.h>
#include <sys/user.h>
#include <asm/unistd.h>
#include "user.h"
#include "ptrace_user.h"
#include "time_user.h"
#include "sysdep/ptrace.h"
#include "user_util.h"
#include "kern_util.h"
#include "skas.h"
#include "skas_ptrace.h"
#include "sysdep/sigcontext.h"
#include "os.h"
#include "proc_mm.h"
unsigned long exec_regs[FRAME_SIZE];
unsigned long exec_fp_regs[HOST_FP_SIZE];
unsigned long exec_fpx_regs[HOST_XFP_SIZE];
int have_fpx_regs = 1;
static void handle_segv(int pid)
{
struct ptrace_faultinfo fault;
int err;
err = ptrace(PTRACE_FAULTINFO, pid, 0, &fault);
if(err)
panic("handle_segv - PTRACE_FAULTINFO failed, errno = %d\n",
errno);
segv(fault.addr, 0, FAULT_WRITE(fault.is_write), 1, NULL);
}
static void handle_trap(int pid, struct uml_pt_regs *regs)
{
int err, syscall_nr, status;
syscall_nr = PT_SYSCALL_NR(regs->mode.skas.regs);
if(syscall_nr < 1){
relay_signal(SIGTRAP, regs);
return;
}
UPT_SYSCALL_NR(regs) = syscall_nr;
err = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET, __NR_getpid);
if(err < 0)
panic("handle_trap - nullifying syscall failed errno = %d\n",
errno);
err = ptrace(PTRACE_SYSCALL, pid, 0, 0);
if(err < 0)
panic("handle_trap - continuing to end of syscall failed, "
"errno = %d\n", errno);
err = waitpid(pid, &status, WUNTRACED);
if((err < 0) || !WIFSTOPPED(status) || (WSTOPSIG(status) != SIGTRAP))
panic("handle_trap - failed to wait at end of syscall, "
"errno = %d, status = %d\n", errno, status);
handle_syscall(regs);
}
int userspace_pid;
static int userspace_tramp(void *arg)
{
init_new_thread_signals(0);
enable_timer();
ptrace(PTRACE_TRACEME, 0, 0, 0);
os_stop_process(os_getpid());
}
void start_userspace(void)
{
void *stack;
unsigned long sp;
int pid, status, n;
stack = mmap(NULL, PAGE_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if(stack == MAP_FAILED)
panic("start_userspace : mmap failed, errno = %d", errno);
sp = (unsigned long) stack + PAGE_SIZE - sizeof(void *);
pid = clone(userspace_tramp, (void *) sp,
CLONE_FILES | CLONE_VM | SIGCHLD, NULL);
if(pid < 0)
panic("start_userspace : clone failed, errno = %d", errno);
do {
n = waitpid(pid, &status, WUNTRACED);
if(n < 0)
panic("start_userspace : wait failed, errno = %d",
errno);
} while(WIFSTOPPED(status) && (WSTOPSIG(status) == SIGVTALRM));
if(!WIFSTOPPED(status) || (WSTOPSIG(status) != SIGSTOP))
panic("start_userspace : expected SIGSTOP, got status = %d",
status);
if(munmap(stack, PAGE_SIZE) < 0)
panic("start_userspace : munmap failed, errno = %d\n", errno);
userspace_pid = pid;
}
void userspace(struct uml_pt_regs *regs)
{
int err, status, op;
restore_registers(regs);
err = ptrace(PTRACE_SYSCALL, userspace_pid, 0, 0);
if(err)
panic("userspace - PTRACE_SYSCALL failed, errno = %d\n",
errno);
while(1){
err = waitpid(userspace_pid, &status, WUNTRACED);
if(err < 0)
panic("userspace - waitpid failed, errno = %d\n",
errno);
regs->is_user = 1;
save_registers(regs);
if(WIFSTOPPED(status)){
switch(WSTOPSIG(status)){
case SIGSEGV:
handle_segv(userspace_pid);
break;
case SIGTRAP:
handle_trap(userspace_pid, regs);
break;
case SIGIO:
case SIGVTALRM:
case SIGILL:
case SIGBUS:
case SIGFPE:
user_signal(WSTOPSIG(status), regs);
break;
default:
printk("userspace - child stopped with signal "
"%d\n", WSTOPSIG(status));
}
interrupt_end();
}
restore_registers(regs);
op = singlestepping_skas() ? PTRACE_SINGLESTEP :
PTRACE_SYSCALL;
err = ptrace(op, userspace_pid, 0, 0);
if(err)
panic("userspace - PTRACE_SYSCALL failed, "
"errno = %d\n", errno);
}
}
void new_thread(void *stack, void **switch_buf_ptr, void **fork_buf_ptr,
void (*handler)(int))
{
jmp_buf switch_buf, fork_buf;
*switch_buf_ptr = &switch_buf;
*fork_buf_ptr = &fork_buf;
if(setjmp(fork_buf) == 0)
new_thread_proc(stack, handler);
remove_sigstack();
}
void thread_wait(void *sw, void *fb)
{
jmp_buf buf, **switch_buf = sw, *fork_buf;
*switch_buf = &buf;
fork_buf = fb;
if(setjmp(buf) == 0)
longjmp(*fork_buf, 1);
}
static int move_registers(int int_op, int fp_op, struct uml_pt_regs *regs,
unsigned long *fp_regs)
{
if(ptrace(int_op, userspace_pid, 0, regs->mode.skas.regs) < 0)
return(-errno);
if(ptrace(fp_op, userspace_pid, 0, fp_regs) < 0)
return(-errno);
return(0);
}
void save_registers(struct uml_pt_regs *regs)
{
unsigned long *fp_regs;
int err, fp_op;
if(have_fpx_regs){
fp_op = PTRACE_GETFPXREGS;
fp_regs = regs->mode.skas.xfp;
}
else {
fp_op = PTRACE_GETFPREGS;
fp_regs = regs->mode.skas.fp;
}
err = move_registers(PTRACE_GETREGS, fp_op, regs, fp_regs);
if(err)
panic("save_registers - saving registers failed, errno = %d\n",
err);
}
void restore_registers(struct uml_pt_regs *regs)
{
unsigned long *fp_regs;
int err, fp_op;
if(have_fpx_regs){
fp_op = PTRACE_SETFPXREGS;
fp_regs = regs->mode.skas.xfp;
}
else {
fp_op = PTRACE_SETFPREGS;
fp_regs = regs->mode.skas.fp;
}
err = move_registers(PTRACE_SETREGS, fp_op, regs, fp_regs);
if(err)
panic("restore_registers - saving registers failed, "
"errno = %d\n", err);
}
void switch_threads(void *me, void *next)
{
jmp_buf my_buf, **me_ptr = me, *next_buf = next;
*me_ptr = &my_buf;
if(setjmp(my_buf) == 0)
longjmp(*next_buf, 1);
}
static jmp_buf initial_jmpbuf;
/* XXX Make these percpu */
static void (*cb_proc)(void *arg);
static void *cb_arg;
static jmp_buf *cb_back;
int start_idle_thread(void *stack, void *switch_buf_ptr, void **fork_buf_ptr)
{
jmp_buf **switch_buf = switch_buf_ptr;
int n;
*fork_buf_ptr = &initial_jmpbuf;
n = setjmp(initial_jmpbuf);
if(n == 0)
new_thread_proc((void *) stack, new_thread_handler);
else if(n == 1)
remove_sigstack();
else if(n == 2){
(*cb_proc)(cb_arg);
longjmp(*cb_back, 1);
}
else if(n == 3)
return(0);
else if(n == 4)
return(1);
longjmp(**switch_buf, 1);
}
void remove_sigstack(void)
{
stack_t stack = ((stack_t) { .ss_flags = SS_DISABLE,
.ss_sp = NULL,
.ss_size = 0 });
if(sigaltstack(&stack, NULL) != 0)
panic("disabling signal stack failed, errno = %d\n", errno);
}
void initial_thread_cb_skas(void (*proc)(void *), void *arg)
{
jmp_buf here;
cb_proc = proc;
cb_arg = arg;
cb_back = &here;
if(setjmp(here) == 0)
longjmp(initial_jmpbuf, 2);
cb_proc = NULL;
cb_arg = NULL;
cb_back = NULL;
}
void halt_skas(void)
{
block_signals();
longjmp(initial_jmpbuf, 3);
}
void reboot_skas(void)
{
block_signals();
longjmp(initial_jmpbuf, 4);
}
int new_mm(int from)
{
struct proc_mm_op copy;
int n, fd = os_open_file("/proc/mm", of_write(OPENFLAGS()), 0);
if(fd < 0)
return(-errno);
if(from != -1){
copy = ((struct proc_mm_op) { .op = MM_COPY_SEGMENTS,
.u =
{ .copy_segments = from } } );
n = os_write_file(fd, (char *) &copy, sizeof(copy));
if(n != sizeof(copy))
printk("new_mm : /proc/mm copy_segments failed, "
"errno = %d\n", errno);
}
return(fd);
}
void switch_mm_skas(int mm_fd)
{
int err;
err = ptrace(PTRACE_SWITCH_MM, userspace_pid, 0, mm_fd);
if(err)
panic("switch_mm_skas - PTRACE_SWITCH_MM failed, errno = %d\n",
errno);
}
void kill_off_processes_skas(void)
{
os_kill_process(userspace_pid, 1);
}
void init_registers(int pid)
{
int err;
if(ptrace(PTRACE_GETREGS, pid, 0, exec_regs) < 0)
panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
errno);
err = ptrace(PTRACE_GETFPXREGS, pid, 0, exec_fpx_regs);
if(!err)
return;
have_fpx_regs = 0;
if(errno != EIO)
panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d",
errno);
err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs);
if(err)
panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d",
errno);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/process_kern.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/sched.h"
#include "linux/slab.h"
#include "kern_util.h"
#include "time_user.h"
#include "signal_user.h"
#include "skas.h"
#include "os.h"
#include "user_util.h"
#include "tlb.h"
#include "frame.h"
#include "kern.h"
#include "mode.h"
int singlestepping_skas(void)
{
int ret = current->ptrace & PT_DTRACE;
current->ptrace &= ~PT_DTRACE;
return(ret);
}
void *switch_to_skas(void *prev, void *next)
{
struct task_struct *from, *to;
from = prev;
to = next;
/* XXX need to check runqueues[cpu].idle */
if(current->pid == 0)
switch_timers(0);
to->thread.prev_sched = from;
set_current(to);
switch_threads(&from->thread.mode.skas.switch_buf,
to->thread.mode.skas.switch_buf);
if(current->pid == 0)
switch_timers(1);
return(current->thread.prev_sched);
}
extern void schedule_tail(struct task_struct *prev);
void new_thread_handler(int sig)
{
int (*fn)(void *), n;
void *arg;
fn = current->thread.request.u.thread.proc;
arg = current->thread.request.u.thread.arg;
change_sig(SIGUSR1, 1);
thread_wait(&current->thread.mode.skas.switch_buf,
current->thread.mode.skas.fork_buf);
#ifdef CONFIG_SMP
schedule_tail(NULL);
#endif
current->thread.prev_sched = NULL;
n = run_kernel_thread(fn, arg, &current->thread.exec_buf);
if(n == 1)
userspace(&current->thread.regs.regs);
else if(n == 2)
do_exit(0);
}
void new_thread_proc(void *stack, void (*handler)(int sig))
{
init_new_thread_stack(stack, handler);
os_usr1_process(os_getpid());
}
void release_thread_skas(struct task_struct *task)
{
}
void exit_thread_skas(void)
{
}
void fork_handler(int sig)
{
change_sig(SIGUSR1, 1);
thread_wait(&current->thread.mode.skas.switch_buf,
current->thread.mode.skas.fork_buf);
force_flush_all();
#ifdef CONFIG_SMP
schedule_tail(current->thread.prev_sched);
#endif
current->thread.prev_sched = NULL;
unblock_signals();
userspace(&current->thread.regs.regs);
}
int copy_thread_skas(int nr, unsigned long clone_flags, unsigned long sp,
unsigned long stack_top, struct task_struct * p,
struct pt_regs *regs)
{
void (*handler)(int);
if(current->thread.forking){
memcpy(&p->thread.regs.regs.mode.skas,
&current->thread.regs.regs.mode.skas,
sizeof(p->thread.regs.regs.mode.skas));
REGS_SET_SYSCALL_RETURN(p->thread.regs.regs.mode.skas.regs, 0);
if(sp != 0) REGS_SP(p->thread.regs.regs.mode.skas.regs) = sp;
handler = fork_handler;
}
else {
memcpy(p->thread.regs.regs.mode.skas.regs, exec_regs,
sizeof(p->thread.regs.regs.mode.skas.regs));
memcpy(p->thread.regs.regs.mode.skas.fp, exec_fp_regs,
sizeof(p->thread.regs.regs.mode.skas.fp));
memcpy(p->thread.regs.regs.mode.skas.xfp, exec_fpx_regs,
sizeof(p->thread.regs.regs.mode.skas.xfp));
p->thread.request.u.thread = current->thread.request.u.thread;
handler = new_thread_handler;
}
new_thread((void *) p->thread.kernel_stack,
&p->thread.mode.skas.switch_buf,
&p->thread.mode.skas.fork_buf, handler);
return(0);
}
void init_idle_skas(void)
{
cpu_tasks[current->thread_info->cpu].pid = os_getpid();
default_idle();
}
extern void start_kernel(void);
static int start_kernel_proc(void *unused)
{
int pid;
block_signals();
pid = os_getpid();
cpu_tasks[0].pid = pid;
cpu_tasks[0].task = current;
#ifdef CONFIG_SMP
cpu_online_map = 1;
#endif
start_kernel();
return(0);
}
int start_uml_skas(void)
{
start_userspace();
capture_signal_stack();
init_new_thread_signals(1);
idle_timer();
init_task.thread.request.u.thread.proc = start_kernel_proc;
init_task.thread.request.u.thread.arg = NULL;
return(start_idle_thread((void *) init_task.thread.kernel_stack,
&init_task.thread.mode.skas.switch_buf,
&init_task.thread.mode.skas.fork_buf));
}
int external_pid_skas(struct task_struct *task)
{
return(userspace_pid);
}
int thread_pid_skas(struct task_struct *task)
{
return(userspace_pid);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/sys-i386/Makefile 0 → 100644
View file @ 0672b227
#
# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
# Licensed under the GPL
#
obj-y = sigcontext.o
USER_OBJS = sigcontext.o
USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
$(USER_OBJS) : %.o: %.c
$(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $<
clean :
arch/um/kernel/skas/sys-i386/sigcontext.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <errno.h>
#include <asm/sigcontext.h>
#include <sys/ptrace.h>
#include <linux/ptrace.h>
#include "sysdep/ptrace.h"
#include "sysdep/ptrace_user.h"
#include "kern_util.h"
#include "user.h"
#include "sigcontext.h"
extern int userspace_pid;
int copy_sc_from_user_skas(struct uml_pt_regs *regs, void *from_ptr)
{
struct sigcontext sc, *from = from_ptr;
unsigned long fpregs[FP_FRAME_SIZE];
int err;
err = copy_from_user_proc(&sc, from, sizeof(sc));
err |= copy_from_user_proc(fpregs, sc.fpstate, sizeof(fpregs));
if(err)
return(err);
regs->mode.skas.regs[GS] = sc.gs;
regs->mode.skas.regs[FS] = sc.fs;
regs->mode.skas.regs[ES] = sc.es;
regs->mode.skas.regs[DS] = sc.ds;
regs->mode.skas.regs[EDI] = sc.edi;
regs->mode.skas.regs[ESI] = sc.esi;
regs->mode.skas.regs[EBP] = sc.ebp;
regs->mode.skas.regs[UESP] = sc.esp;
regs->mode.skas.regs[EBX] = sc.ebx;
regs->mode.skas.regs[EDX] = sc.edx;
regs->mode.skas.regs[ECX] = sc.ecx;
regs->mode.skas.regs[EAX] = sc.eax;
regs->mode.skas.regs[EIP] = sc.eip;
regs->mode.skas.regs[CS] = sc.cs;
regs->mode.skas.regs[EFL] = sc.eflags;
regs->mode.skas.regs[UESP] = sc.esp_at_signal;
regs->mode.skas.regs[SS] = sc.ss;
regs->mode.skas.fault_addr = sc.cr2;
regs->mode.skas.fault_type = FAULT_WRITE(sc.err);
regs->mode.skas.trap_type = sc.trapno;
err = ptrace(PTRACE_SETFPREGS, userspace_pid, 0, fpregs);
if(err < 0){
printk("copy_sc_to_user - PTRACE_SETFPREGS failed, "
"errno = %d\n", errno);
return(1);
}
return(0);
}
int copy_sc_to_user_skas(void *to_ptr, struct uml_pt_regs *regs,
unsigned long fault_addr, int fault_type)
{
struct sigcontext sc, *to = to_ptr;
struct _fpstate *to_fp;
unsigned long fpregs[FP_FRAME_SIZE];
int err;
sc.gs = regs->mode.skas.regs[GS];
sc.fs = regs->mode.skas.regs[FS];
sc.es = regs->mode.skas.regs[ES];
sc.ds = regs->mode.skas.regs[DS];
sc.edi = regs->mode.skas.regs[EDI];
sc.esi = regs->mode.skas.regs[ESI];
sc.ebp = regs->mode.skas.regs[EBP];
sc.esp = regs->mode.skas.regs[UESP];
sc.ebx = regs->mode.skas.regs[EBX];
sc.edx = regs->mode.skas.regs[EDX];
sc.ecx = regs->mode.skas.regs[ECX];
sc.eax = regs->mode.skas.regs[EAX];
sc.eip = regs->mode.skas.regs[EIP];
sc.cs = regs->mode.skas.regs[CS];
sc.eflags = regs->mode.skas.regs[EFL];
sc.esp_at_signal = regs->mode.skas.regs[UESP];
sc.ss = regs->mode.skas.regs[SS];
sc.cr2 = fault_addr;
sc.err = TO_SC_ERR(fault_type);
sc.trapno = regs->mode.skas.trap_type;
err = ptrace(PTRACE_GETFPREGS, userspace_pid, 0, fpregs);
if(err < 0){
printk("copy_sc_to_user - PTRACE_GETFPREGS failed, "
"errno = %d\n", errno);
return(1);
}
to_fp = (struct _fpstate *)((unsigned long) to + sizeof(*to));
sc.fpstate = to_fp;
if(err)
return(err);
return(copy_to_user_proc(to, &sc, sizeof(sc)) ||
copy_to_user_proc(to_fp, fpregs, sizeof(fpregs)));
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/syscall_kern.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "linux/sys.h"
#include "asm/errno.h"
#include "asm/unistd.h"
#include "asm/ptrace.h"
#include "asm/current.h"
#include "sysdep/syscalls.h"
#include "kern_util.h"
extern syscall_handler_t *sys_call_table[];
long execute_syscall_skas(void *r)
{
struct pt_regs *regs = r;
long res;
int syscall;
current->thread.nsyscalls++;
nsyscalls++;
syscall = regs->regs.syscall;
if((syscall >= NR_syscalls) || (syscall < 0))
res = -ENOSYS;
else res = EXECUTE_SYSCALL(syscall, regs);
return(res);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/syscall_user.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <stdlib.h>
#include <signal.h>
#include "kern_util.h"
#include "syscall_user.h"
#include "sysdep/ptrace.h"
#include "sysdep/sigcontext.h"
/* XXX Bogus */
#define ERESTARTSYS 512
#define ERESTARTNOINTR 513
#define ERESTARTNOHAND 514
void handle_syscall(struct uml_pt_regs *regs)
{
long result;
int index;
host_to_regs(regs);
index = record_syscall_start(UPT_SYSCALL_NR(regs));
syscall_trace();
result = execute_syscall(regs);
REGS_SET_SYSCALL_RETURN(regs->mode.skas.regs, result);
if((result == -ERESTARTNOHAND) || (result == -ERESTARTSYS) ||
(result == -ERESTARTNOINTR))
do_signal(result);
syscall_trace();
record_syscall_end(index, result);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/time.c 0 → 100644
View file @ 0672b227
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <sys/signal.h>
#include <sys/time.h>
#include "time_user.h"
#include "process.h"
#include "user.h"
void user_time_init_skas(void)
{
if(signal(SIGALRM, (__sighandler_t) alarm_handler) == SIG_ERR)
panic("Couldn't set SIGALRM handler");
if(signal(SIGVTALRM, (__sighandler_t) alarm_handler) == SIG_ERR)
panic("Couldn't set SIGVTALRM handler");
set_interval(ITIMER_VIRTUAL);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
arch/um/kernel/skas/tlb.c 0 → 100644
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all: mk_ptregs
mk_ptregs : mk_ptregs.o
$(CC) -o mk_ptregs mk_ptregs.o
mk_ptregs.o : mk_ptregs.c
$(CC) -c $<
clean :
$(RM) -f mk_ptregs *.o *~
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arch/um/kernel/smp.c
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......@@ -116,7 +116,8 @@ static int idle_proc(void *cpup)
panic("CPU#%d failed to create IPI pipe, errno = %d", cpu,
-err);
activate_ipi(cpu_data[cpu].ipi_pipe[0], current->thread.extern_pid);
activate_ipi(cpu_data[cpu].ipi_pipe[0],
current->thread.mode.tt.extern_pid);
wmb();
if (test_and_set_bit(cpu, &smp_callin_map)) {
......@@ -143,10 +144,12 @@ static struct task_struct *idle_thread(int cpu)
if(IS_ERR(new_task)) panic("do_fork failed in idle_thread");
cpu_tasks[cpu] = ((struct cpu_task)
{ .pid = new_task->thread.extern_pid,
{ .pid = new_task->thread.mode.tt.extern_pid,
.task = new_task } );
idle_threads[cpu] = new_task;
write(new_task->thread.switch_pipe[1], &c, sizeof(c));
CHOOSE_MODE(write(new_task->thread.mode.tt.switch_pipe[1], &c,
sizeof(c)),
({ panic("skas mode doesn't support SMP"); }));
return(new_task);
}
......@@ -162,7 +165,8 @@ void smp_prepare_cpus(unsigned int maxcpus)
err = os_pipe(cpu_data[0].ipi_pipe, 1, 1);
if(err) panic("CPU#0 failed to create IPI pipe, errno = %d", -err);
activate_ipi(cpu_data[0].ipi_pipe[0], current->thread.extern_pid);
activate_ipi(cpu_data[0].ipi_pipe[0],
current->thread.mode.tt.extern_pid);
for(cpu = 1; cpu < ncpus; cpu++){
printk("Booting processor %d...\n", cpu);
......
arch/um/kernel/syscall_kern.c
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arch/um/kernel/time.c
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arch/um/kernel/time_kern.c
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arch/um/kernel/tlb.c
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arch/um/kernel/trap_kern.c
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arch/um/kernel/trap_user.c
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arch/um/kernel/tt/include/mode.h 0 → 100644
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arch/um/kernel/tt/include/mode_kern.h 0 → 100644
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arch/um/kernel/tt/ptproxy/Makefile 0 → 100644
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arch/um/ptproxy/ptrace.c → arch/um/kernel/tt/ptproxy/ptrace.c
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......@@ -21,6 +21,7 @@ Jeff Dike (jdike@karaya.com) : Modified for integration into uml
#include "user_util.h"
#include "kern_util.h"
#include "ptrace_user.h"
#include "tt.h"
long proxy_ptrace(struct debugger *debugger, int arg1, pid_t arg2,
long arg3, long arg4, pid_t child, int *ret)
......
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arch/um/kernel/um_arch.c
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arch/um/kernel/umid.c
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arch/um/main.c
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arch/um/os-Linux/tty.c
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arch/um/sys-i386/ldt.c
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arch/um/sys-i386/util/mk_thread_kern.c
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arch/um/sys-i386/util/mk_thread_user.c
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include/asm-um/a.out.h
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include/asm-um/checksum.h
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include/asm-um/mmu.h
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include/asm-um/mmu_context.h
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include/asm-um/page.h
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include/asm-um/ptrace-generic.h
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include/asm-um/uaccess.h
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