diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-17 13:48:37 -0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-22 22:55:19 -0700 |
| commit | 8569c9140bd41089f9b6be8837ca421102714a90 (patch) | |
| tree | cd289b322b215fe2ca2530aa320febfd99388d7f /arch/um/include/shared | |
| parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) | |
x86, um: take arch/um/include/* out of the way
We can't just plop asm/* into it - userland helpers are built with it
in search path and seeing asm/* show up there suddenly would be a bad
idea.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/um/include/shared')
78 files changed, 3879 insertions, 0 deletions
diff --git a/arch/um/include/shared/aio.h b/arch/um/include/shared/aio.h new file mode 100644 index 000000000000..423bae9153f8 --- /dev/null +++ b/arch/um/include/shared/aio.h @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2004 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef AIO_H__ +#define AIO_H__ + +enum aio_type { AIO_READ, AIO_WRITE, AIO_MMAP }; + +struct aio_thread_reply { + void *data; + int err; +}; + +struct aio_context { + int reply_fd; + struct aio_context *next; +}; + +#define INIT_AIO_CONTEXT { .reply_fd = -1, \ + .next = NULL } + +extern int submit_aio(enum aio_type type, int fd, char *buf, int len, + unsigned long long offset, int reply_fd, + struct aio_context *aio); + +#endif diff --git a/arch/um/include/shared/arch.h b/arch/um/include/shared/arch.h new file mode 100644 index 000000000000..2de92a08a76b --- /dev/null +++ b/arch/um/include/shared/arch.h @@ -0,0 +1,15 @@ +/* + * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __ARCH_H__ +#define __ARCH_H__ + +#include "sysdep/ptrace.h" + +extern void arch_check_bugs(void); +extern int arch_fixup(unsigned long address, struct uml_pt_regs *regs); +extern void arch_examine_signal(int sig, struct uml_pt_regs *regs); + +#endif diff --git a/arch/um/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h new file mode 100644 index 000000000000..58e852dfb0ce --- /dev/null +++ b/arch/um/include/shared/as-layout.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __START_H__ +#define __START_H__ + +#include "uml-config.h" +#include "kern_constants.h" + +/* + * Stolen from linux/const.h, which can't be directly included since + * this is used in userspace code, which has no access to the kernel + * headers. Changed to be suitable for adding casts to the start, + * rather than "UL" to the end. + */ + +/* Some constant macros are used in both assembler and + * C code. Therefore we cannot annotate them always with + * 'UL' and other type specifiers unilaterally. We + * use the following macros to deal with this. + */ + +#ifdef __ASSEMBLY__ +#define _UML_AC(X, Y) (Y) +#else +#define __UML_AC(X, Y) (X(Y)) +#define _UML_AC(X, Y) __UML_AC(X, Y) +#endif + +#define STUB_START _UML_AC(, 0x100000) +#define STUB_CODE _UML_AC((unsigned long), STUB_START) +#define STUB_DATA _UML_AC((unsigned long), STUB_CODE + UM_KERN_PAGE_SIZE) +#define STUB_END _UML_AC((unsigned long), STUB_DATA + UM_KERN_PAGE_SIZE) + +#ifndef __ASSEMBLY__ + +#include "sysdep/ptrace.h" + +struct cpu_task { + int pid; + void *task; +}; + +extern struct cpu_task cpu_tasks[]; + +extern unsigned long low_physmem; +extern unsigned long high_physmem; +extern unsigned long uml_physmem; +extern unsigned long uml_reserved; +extern unsigned long end_vm; +extern unsigned long start_vm; +extern unsigned long long highmem; + +extern unsigned long _stext, _etext, _sdata, _edata, __bss_start, _end; +extern unsigned long _unprotected_end; +extern unsigned long brk_start; + +extern unsigned long host_task_size; + +extern int linux_main(int argc, char **argv); + +extern void (*sig_info[])(int, struct uml_pt_regs *); + +#endif + +#endif diff --git a/arch/um/include/shared/chan_kern.h b/arch/um/include/shared/chan_kern.h new file mode 100644 index 000000000000..1e651457e049 --- /dev/null +++ b/arch/um/include/shared/chan_kern.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __CHAN_KERN_H__ +#define __CHAN_KERN_H__ + +#include "linux/tty.h" +#include "linux/list.h" +#include "linux/console.h" +#include "chan_user.h" +#include "line.h" + +struct chan { + struct list_head list; + struct list_head free_list; + struct line *line; + char *dev; + unsigned int primary:1; + unsigned int input:1; + unsigned int output:1; + unsigned int opened:1; + unsigned int enabled:1; + int fd; + const struct chan_ops *ops; + void *data; +}; + +extern void chan_interrupt(struct list_head *chans, struct delayed_work *task, + struct tty_struct *tty, int irq); +extern int parse_chan_pair(char *str, struct line *line, int device, + const struct chan_opts *opts, char **error_out); +extern int write_chan(struct list_head *chans, const char *buf, int len, + int write_irq); +extern int console_write_chan(struct list_head *chans, const char *buf, + int len); +extern int console_open_chan(struct line *line, struct console *co); +extern void deactivate_chan(struct list_head *chans, int irq); +extern void reactivate_chan(struct list_head *chans, int irq); +extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty); +extern int enable_chan(struct line *line); +extern void close_chan(struct list_head *chans, int delay_free_irq); +extern int chan_window_size(struct list_head *chans, + unsigned short *rows_out, + unsigned short *cols_out); +extern int chan_config_string(struct list_head *chans, char *str, int size, + char **error_out); + +#endif diff --git a/arch/um/include/shared/chan_user.h b/arch/um/include/shared/chan_user.h new file mode 100644 index 000000000000..9b9ced85b703 --- /dev/null +++ b/arch/um/include/shared/chan_user.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __CHAN_USER_H__ +#define __CHAN_USER_H__ + +#include "init.h" + +struct chan_opts { + void (*const announce)(char *dev_name, int dev); + char *xterm_title; + const int raw; +}; + +enum chan_init_pri { INIT_STATIC, INIT_ALL, INIT_ONE }; + +struct chan_ops { + char *type; + void *(*init)(char *, int, const struct chan_opts *); + int (*open)(int, int, int, void *, char **); + void (*close)(int, void *); + int (*read)(int, char *, void *); + int (*write)(int, const char *, int, void *); + int (*console_write)(int, const char *, int); + int (*window_size)(int, void *, unsigned short *, unsigned short *); + void (*free)(void *); + int winch; +}; + +extern const struct chan_ops fd_ops, null_ops, port_ops, pts_ops, pty_ops, + tty_ops, xterm_ops; + +extern void generic_close(int fd, void *unused); +extern int generic_read(int fd, char *c_out, void *unused); +extern int generic_write(int fd, const char *buf, int n, void *unused); +extern int generic_console_write(int fd, const char *buf, int n); +extern int generic_window_size(int fd, void *unused, unsigned short *rows_out, + unsigned short *cols_out); +extern void generic_free(void *data); + +struct tty_struct; +extern void register_winch(int fd, struct tty_struct *tty); +extern void register_winch_irq(int fd, int tty_fd, int pid, + struct tty_struct *tty, unsigned long stack); + +#define __channel_help(fn, prefix) \ +__uml_help(fn, prefix "[0-9]*=<channel description>\n" \ +" Attach a console or serial line to a host channel. See\n" \ +" http://user-mode-linux.sourceforge.net/old/input.html for a complete\n" \ +" description of this switch.\n\n" \ +); + +#endif diff --git a/arch/um/include/shared/common-offsets.h b/arch/um/include/shared/common-offsets.h new file mode 100644 index 000000000000..b54bd35585c2 --- /dev/null +++ b/arch/um/include/shared/common-offsets.h @@ -0,0 +1,41 @@ +/* for use by sys-$SUBARCH/kernel-offsets.c */ + +DEFINE(KERNEL_MADV_REMOVE, MADV_REMOVE); + +OFFSET(HOST_TASK_REGS, task_struct, thread.regs); +OFFSET(HOST_TASK_PID, task_struct, pid); + +DEFINE(UM_KERN_PAGE_SIZE, PAGE_SIZE); +DEFINE(UM_KERN_PAGE_MASK, PAGE_MASK); +DEFINE(UM_KERN_PAGE_SHIFT, PAGE_SHIFT); +DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC); + +DEFINE_STR(UM_KERN_EMERG, KERN_EMERG); +DEFINE_STR(UM_KERN_ALERT, KERN_ALERT); +DEFINE_STR(UM_KERN_CRIT, KERN_CRIT); +DEFINE_STR(UM_KERN_ERR, KERN_ERR); +DEFINE_STR(UM_KERN_WARNING, KERN_WARNING); +DEFINE_STR(UM_KERN_NOTICE, KERN_NOTICE); +DEFINE_STR(UM_KERN_INFO, KERN_INFO); +DEFINE_STR(UM_KERN_DEBUG, KERN_DEBUG); +DEFINE_STR(UM_KERN_CONT, KERN_CONT); + +DEFINE(UM_ELF_CLASS, ELF_CLASS); +DEFINE(UM_ELFCLASS32, ELFCLASS32); +DEFINE(UM_ELFCLASS64, ELFCLASS64); + +DEFINE(UM_NR_CPUS, NR_CPUS); + +DEFINE(UM_GFP_KERNEL, GFP_KERNEL); +DEFINE(UM_GFP_ATOMIC, GFP_ATOMIC); + +/* For crypto assembler code. */ +DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx)); + +DEFINE(UM_THREAD_SIZE, THREAD_SIZE); + +DEFINE(UM_HZ, HZ); + +DEFINE(UM_USEC_PER_SEC, USEC_PER_SEC); +DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC); +DEFINE(UM_NSEC_PER_USEC, NSEC_PER_USEC); diff --git a/arch/um/include/shared/elf_user.h b/arch/um/include/shared/elf_user.h new file mode 100644 index 000000000000..53516b637272 --- /dev/null +++ b/arch/um/include/shared/elf_user.h @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2004 Fujitsu Siemens Computers GmbH + * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com> + * Licensed under the GPL + */ + +#ifndef __ELF_USER_H__ +#define __ELF_USER_H__ + +/* For compilation on a host that doesn't support AT_SYSINFO (Linux 2.4) */ + +#ifndef AT_SYSINFO +#define AT_SYSINFO 32 +#endif +#ifndef AT_SYSINFO_EHDR +#define AT_SYSINFO_EHDR 33 +#endif + +#endif diff --git a/arch/um/include/shared/frame_kern.h b/arch/um/include/shared/frame_kern.h new file mode 100644 index 000000000000..ce9514f57211 --- /dev/null +++ b/arch/um/include/shared/frame_kern.h @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __FRAME_KERN_H_ +#define __FRAME_KERN_H_ + +#define _S(nr) (1<<((nr)-1)) +#define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP))) + +extern int setup_signal_stack_sc(unsigned long stack_top, int sig, + struct k_sigaction *ka, + struct pt_regs *regs, + sigset_t *mask); +extern int setup_signal_stack_si(unsigned long stack_top, int sig, + struct k_sigaction *ka, + struct pt_regs *regs, siginfo_t *info, + sigset_t *mask); + +#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: + */ diff --git a/arch/um/include/shared/init.h b/arch/um/include/shared/init.h new file mode 100644 index 000000000000..37dd097c16c0 --- /dev/null +++ b/arch/um/include/shared/init.h @@ -0,0 +1,151 @@ +#ifndef _LINUX_UML_INIT_H +#define _LINUX_UML_INIT_H + +/* These macros are used to mark some functions or + * initialized data (doesn't apply to uninitialized data) + * as `initialization' functions. The kernel can take this + * as hint that the function is used only during the initialization + * phase and free up used memory resources after + * + * Usage: + * For functions: + * + * You should add __init immediately before the function name, like: + * + * static void __init initme(int x, int y) + * { + * extern int z; z = x * y; + * } + * + * If the function has a prototype somewhere, you can also add + * __init between closing brace of the prototype and semicolon: + * + * extern int initialize_foobar_device(int, int, int) __init; + * + * For initialized data: + * You should insert __initdata between the variable name and equal + * sign followed by value, e.g.: + * + * static int init_variable __initdata = 0; + * static char linux_logo[] __initdata = { 0x32, 0x36, ... }; + * + * Don't forget to initialize data not at file scope, i.e. within a function, + * as gcc otherwise puts the data into the bss section and not into the init + * section. + * + * Also note, that this data cannot be "const". + */ + +#ifndef _LINUX_INIT_H +typedef int (*initcall_t)(void); +typedef void (*exitcall_t)(void); + +#ifndef __KERNEL__ +#ifndef __section +# define __section(S) __attribute__ ((__section__(#S))) +#endif + +#if __GNUC__ == 3 + +#if __GNUC_MINOR__ >= 3 +# define __used __attribute__((__used__)) +#else +# define __used __attribute__((__unused__)) +#endif + +#else +#if __GNUC__ == 4 +# define __used __attribute__((__used__)) +#endif +#endif + +#else +#include <linux/compiler.h> +#endif +/* These are for everybody (although not all archs will actually + discard it in modules) */ +#define __init __section(.init.text) +#define __initdata __section(.init.data) +#define __exitdata __section(.exit.data) +#define __exit_call __used __section(.exitcall.exit) + +#ifdef MODULE +#define __exit __section(.exit.text) +#else +#define __exit __used __section(.exit.text) +#endif + +#endif + +#ifndef MODULE +struct uml_param { + const char *str; + int (*setup_func)(char *, int *); +}; + +extern initcall_t __uml_initcall_start, __uml_initcall_end; +extern initcall_t __uml_postsetup_start, __uml_postsetup_end; +extern const char *__uml_help_start, *__uml_help_end; +#endif + +#define __uml_initcall(fn) \ + static initcall_t __uml_initcall_##fn __uml_init_call = fn + +#define __uml_exitcall(fn) \ + static exitcall_t __uml_exitcall_##fn __uml_exit_call = fn + +extern struct uml_param __uml_setup_start, __uml_setup_end; + +#define __uml_postsetup(fn) \ + static initcall_t __uml_postsetup_##fn __uml_postsetup_call = fn + +#define __non_empty_string(dummyname,string) \ + struct __uml_non_empty_string_struct_##dummyname \ + { \ + char _string[sizeof(string)-2]; \ + } + +#ifndef MODULE +#define __uml_setup(str, fn, help...) \ + __non_empty_string(fn ##_setup, str); \ + __uml_help(fn, help); \ + static char __uml_setup_str_##fn[] __initdata = str; \ + static struct uml_param __uml_setup_##fn __uml_init_setup = { __uml_setup_str_##fn, fn } +#else +#define __uml_setup(str, fn, help...) \ + +#endif + +#define __uml_help(fn, help...) \ + __non_empty_string(fn ##__help, help); \ + static char __uml_help_str_##fn[] __initdata = help; \ + static const char *__uml_help_##fn __uml_setup_help = __uml_help_str_##fn + +/* + * Mark functions and data as being only used at initialization + * or exit time. + */ +#define __uml_init_setup __used __section(.uml.setup.init) +#define __uml_setup_help __used __section(.uml.help.init) +#define __uml_init_call __used __section(.uml.initcall.init) +#define __uml_postsetup_call __used __section(.uml.postsetup.init) +#define __uml_exit_call __used __section(.uml.exitcall.exit) + +#ifndef __KERNEL__ + +#define __define_initcall(level,fn) \ + static initcall_t __initcall_##fn __used \ + __attribute__((__section__(".initcall" level ".init"))) = fn + +/* Userspace initcalls shouldn't depend on anything in the kernel, so we'll + * make them run first. + */ +#define __initcall(fn) __define_initcall("1", fn) + +#define __exitcall(fn) static exitcall_t __exitcall_##fn __exit_call = fn + +#define __init_call __used __section(.initcall.init) + +#endif + +#endif /* _LINUX_UML_INIT_H */ diff --git a/arch/um/include/shared/initrd.h b/arch/um/include/shared/initrd.h new file mode 100644 index 000000000000..439b9a814985 --- /dev/null +++ b/arch/um/include/shared/initrd.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __INITRD_USER_H__ +#define __INITRD_USER_H__ + +extern int load_initrd(char *filename, void *buf, int 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: + */ diff --git a/arch/um/include/shared/irq_kern.h b/arch/um/include/shared/irq_kern.h new file mode 100644 index 000000000000..fba3895274f9 --- /dev/null +++ b/arch/um/include/shared/irq_kern.h @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __IRQ_KERN_H__ +#define __IRQ_KERN_H__ + +#include "linux/interrupt.h" +#include "asm/ptrace.h" + +extern int um_request_irq(unsigned int irq, int fd, int type, + irq_handler_t handler, + unsigned long irqflags, const char * devname, + void *dev_id); + +#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: + */ diff --git a/arch/um/include/shared/irq_user.h b/arch/um/include/shared/irq_user.h new file mode 100644 index 000000000000..c6c784df2673 --- /dev/null +++ b/arch/um/include/shared/irq_user.h @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __IRQ_USER_H__ +#define __IRQ_USER_H__ + +#include "sysdep/ptrace.h" + +struct irq_fd { + struct irq_fd *next; + void *id; + int fd; + int type; + int irq; + int events; + int current_events; +}; + +enum { IRQ_READ, IRQ_WRITE }; + +extern void sigio_handler(int sig, struct uml_pt_regs *regs); +extern void free_irq_by_fd(int fd); +extern void reactivate_fd(int fd, int irqnum); +extern void deactivate_fd(int fd, int irqnum); +extern int deactivate_all_fds(void); +extern int activate_ipi(int fd, int pid); + +#endif diff --git a/arch/um/include/shared/kern.h b/arch/um/include/shared/kern.h new file mode 100644 index 000000000000..4ce3fc650e57 --- /dev/null +++ b/arch/um/include/shared/kern.h @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __KERN_H__ +#define __KERN_H__ + +/* These are all user-mode things which are convenient to call directly + * from kernel code and for which writing a wrapper is too much of a pain. + * The regular include files can't be included because this file is included + * only into kernel code, and user-space includes conflict with kernel + * includes. + */ + +extern int errno; + +extern int clone(int (*proc)(void *), void *sp, int flags, void *data); +extern int sleep(int); +extern int printf(const char *fmt, ...); +extern char *strerror(int errnum); +extern char *ptsname(int __fd); +extern int munmap(void *, int); +extern void *sbrk(int increment); +extern void *malloc(int size); +extern void perror(char *err); +extern int kill(int pid, int sig); +extern int getuid(void); +extern int getgid(void); +extern int pause(void); +extern int write(int, const void *, int); +extern void exit(int); +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 + diff --git a/arch/um/include/shared/kern_util.h b/arch/um/include/shared/kern_util.h new file mode 100644 index 000000000000..3c341222d252 --- /dev/null +++ b/arch/um/include/shared/kern_util.h @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __KERN_UTIL_H__ +#define __KERN_UTIL_H__ + +#include "sysdep/ptrace.h" +#include "sysdep/faultinfo.h" + +extern int uml_exitcode; + +extern int ncpus; +extern int kmalloc_ok; + +#define UML_ROUND_UP(addr) \ + ((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK) + +extern unsigned long alloc_stack(int order, int atomic); +extern void free_stack(unsigned long stack, int order); + +extern int do_signal(void); +extern void copy_sc(struct uml_pt_regs *regs, void *from); +extern void interrupt_end(void); +extern void relay_signal(int sig, struct uml_pt_regs *regs); + +extern unsigned long segv(struct faultinfo fi, unsigned long ip, + int is_user, struct uml_pt_regs *regs); +extern int handle_page_fault(unsigned long address, unsigned long ip, + int is_write, int is_user, int *code_out); + +extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs); +extern int smp_sigio_handler(void); +extern void initial_thread_cb(void (*proc)(void *), void *arg); +extern int is_syscall(unsigned long addr); +extern void timer_handler(int sig, struct uml_pt_regs *regs); + +extern void timer_handler(int sig, struct uml_pt_regs *regs); + +extern int start_uml(void); +extern void paging_init(void); + +extern void uml_cleanup(void); +extern void do_uml_exitcalls(void); + +/* + * Are we disallowed to sleep? Used to choose between GFP_KERNEL and + * GFP_ATOMIC. + */ +extern int __cant_sleep(void); +extern void *get_current(void); +extern int copy_from_user_proc(void *to, void *from, int size); +extern int cpu(void); +extern char *uml_strdup(const char *string); + +extern unsigned long to_irq_stack(unsigned long *mask_out); +extern unsigned long from_irq_stack(int nested); + +extern void syscall_trace(struct uml_pt_regs *regs, int entryexit); +extern int singlestepping(void *t); + +extern void segv_handler(int sig, struct uml_pt_regs *regs); +extern void bus_handler(int sig, struct uml_pt_regs *regs); +extern void winch(int sig, struct uml_pt_regs *regs); +extern void fatal_sigsegv(void) __attribute__ ((noreturn)); + + +#endif diff --git a/arch/um/include/shared/line.h b/arch/um/include/shared/line.h new file mode 100644 index 000000000000..311a0d3d93af --- /dev/null +++ b/arch/um/include/shared/line.h @@ -0,0 +1,105 @@ +/* + * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __LINE_H__ +#define __LINE_H__ + +#include "linux/list.h" +#include "linux/workqueue.h" +#include "linux/tty.h" +#include "linux/interrupt.h" +#include "linux/spinlock.h" +#include "linux/mutex.h" +#include "chan_user.h" +#include "mconsole_kern.h" + +/* There's only one modifiable field in this - .mc.list */ +struct line_driver { + const char *name; + const char *device_name; + const short major; + const short minor_start; + const short type; + const short subtype; + const int read_irq; + const char *read_irq_name; + const int write_irq; + const char *write_irq_name; + struct mc_device mc; +}; + +struct line { + struct tty_struct *tty; + spinlock_t count_lock; + int valid; + + char *init_str; + int init_pri; + struct list_head chan_list; + + /*This lock is actually, mostly, local to*/ + spinlock_t lock; + int throttled; + /* Yes, this is a real circular buffer. + * XXX: And this should become a struct kfifo! + * + * buffer points to a buffer allocated on demand, of length + * LINE_BUFSIZE, head to the start of the ring, tail to the end.*/ + char *buffer; + char *head; + char *tail; + + int sigio; + struct delayed_work task; + const struct line_driver *driver; + int have_irq; +}; + +#define LINE_INIT(str, d) \ + { .count_lock = __SPIN_LOCK_UNLOCKED((str).count_lock), \ + .init_str = str, \ + .init_pri = INIT_STATIC, \ + .valid = 1, \ + .lock = __SPIN_LOCK_UNLOCKED((str).lock), \ + .driver = d } + +extern void line_close(struct tty_struct *tty, struct file * filp); +extern int line_open(struct line *lines, struct tty_struct *tty); +extern int line_setup(struct line *lines, unsigned int sizeof_lines, + char *init, char **error_out); +extern int line_write(struct tty_struct *tty, const unsigned char *buf, + int len); +extern int line_put_char(struct tty_struct *tty, unsigned char ch); +extern void line_set_termios(struct tty_struct *tty, struct ktermios * old); +extern int line_chars_in_buffer(struct tty_struct *tty); +extern void line_flush_buffer(struct tty_struct *tty); +extern void line_flush_chars(struct tty_struct *tty); +extern int line_write_room(struct tty_struct *tty); +extern int line_ioctl(struct tty_struct *tty, struct file * file, + unsigned int cmd, unsigned long arg); +extern void line_throttle(struct tty_struct *tty); +extern void line_unthrottle(struct tty_struct *tty); + +extern char *add_xterm_umid(char *base); +extern int line_setup_irq(int fd, int input, int output, struct line *line, + void *data); +extern void line_close_chan(struct line *line); +extern struct tty_driver *register_lines(struct line_driver *line_driver, + const struct tty_operations *driver, + struct line *lines, int nlines); +extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts); +extern void close_lines(struct line *lines, int nlines); + +extern int line_config(struct line *lines, unsigned int sizeof_lines, + char *str, const struct chan_opts *opts, + char **error_out); +extern int line_id(char **str, int *start_out, int *end_out); +extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n, + char **error_out); +extern int line_get_config(char *dev, struct line *lines, + unsigned int sizeof_lines, char *str, + int size, char **error_out); + +#endif diff --git a/arch/um/include/shared/longjmp.h b/arch/um/include/shared/longjmp.h new file mode 100644 index 000000000000..e860bc5848e0 --- /dev/null +++ b/arch/um/include/shared/longjmp.h @@ -0,0 +1,23 @@ +#ifndef __UML_LONGJMP_H +#define __UML_LONGJMP_H + +#include "sysdep/archsetjmp.h" +#include "os.h" + +extern int setjmp(jmp_buf); +extern void longjmp(jmp_buf, int); + +#define UML_LONGJMP(buf, val) do { \ + longjmp(*buf, val); \ +} while(0) + +#define UML_SETJMP(buf) ({ \ + int n; \ + volatile int enable; \ + enable = get_signals(); \ + n = setjmp(*buf); \ + if(n != 0) \ + set_signals(enable); \ + n; }) + +#endif diff --git a/arch/um/include/shared/mconsole.h b/arch/um/include/shared/mconsole.h new file mode 100644 index 000000000000..c139ae1d6826 --- /dev/null +++ b/arch/um/include/shared/mconsole.h @@ -0,0 +1,98 @@ +/* + * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) + * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __MCONSOLE_H__ +#define __MCONSOLE_H__ + +#ifndef __KERNEL__ +#include <stdint.h> +#define u32 uint32_t +#endif + +#include "sysdep/ptrace.h" + +#define MCONSOLE_MAGIC (0xcafebabe) +#define MCONSOLE_MAX_DATA (512) +#define MCONSOLE_VERSION 2 + +struct mconsole_request { + u32 magic; + u32 version; + u32 len; + char data[MCONSOLE_MAX_DATA]; +}; + +struct mconsole_reply { + u32 err; + u32 more; + u32 len; + char data[MCONSOLE_MAX_DATA]; +}; + +struct mconsole_notify { + u32 magic; + u32 version; + enum { MCONSOLE_SOCKET, MCONSOLE_PANIC, MCONSOLE_HANG, + MCONSOLE_USER_NOTIFY } type; + u32 len; + char data[MCONSOLE_MAX_DATA]; +}; + +struct mc_request; + +enum mc_context { MCONSOLE_INTR, MCONSOLE_PROC }; + +struct mconsole_command +{ + char *command; + void (*handler)(struct mc_request *req); + enum mc_context context; +}; + +struct mc_request +{ + int len; + int as_interrupt; + + int originating_fd; + unsigned int originlen; + unsigned char origin[128]; /* sockaddr_un */ + + struct mconsole_request request; + struct mconsole_command *cmd; + struct uml_pt_regs regs; +}; + +extern char mconsole_socket_name[]; + +extern int mconsole_unlink_socket(void); +extern int mconsole_reply_len(struct mc_request *req, const char *reply, + int len, int err, int more); +extern int mconsole_reply(struct mc_request *req, const char *str, int err, + int more); + +extern void mconsole_version(struct mc_request *req); +extern void mconsole_help(struct mc_request *req); +extern void mconsole_halt(struct mc_request *req); +extern void mconsole_reboot(struct mc_request *req); +extern void mconsole_config(struct mc_request *req); +extern void mconsole_remove(struct mc_request *req); +extern void mconsole_sysrq(struct mc_request *req); +extern void mconsole_cad(struct mc_request *req); +extern void mconsole_stop(struct mc_request *req); +extern void mconsole_go(struct mc_request *req); +extern void mconsole_log(struct mc_request *req); +extern void mconsole_proc(struct mc_request *req); +extern void mconsole_stack(struct mc_request *req); + +extern int mconsole_get_request(int fd, struct mc_request *req); +extern int mconsole_notify(char *sock_name, int type, const void *data, + int len); +extern char *mconsole_notify_socket(void); +extern void lock_notify(void); +extern void unlock_notify(void); + +#endif diff --git a/arch/um/include/shared/mconsole_kern.h b/arch/um/include/shared/mconsole_kern.h new file mode 100644 index 000000000000..d2fe07e78958 --- /dev/null +++ b/arch/um/include/shared/mconsole_kern.h @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __MCONSOLE_KERN_H__ +#define __MCONSOLE_KERN_H__ + +#include "linux/list.h" +#include "mconsole.h" + +struct mconsole_entry { + struct list_head list; + struct mc_request request; +}; + +/* All these methods are called in process context. */ +struct mc_device { + struct list_head list; + char *name; + int (*config)(char *, char **); + int (*get_config)(char *, char *, int, char **); + int (*id)(char **, int *, int *); + int (*remove)(int, char **); +}; + +#define CONFIG_CHUNK(str, size, current, chunk, end) \ +do { \ + current += strlen(chunk); \ + if(current >= size) \ + str = NULL; \ + if(str != NULL){ \ + strcpy(str, chunk); \ + str += strlen(chunk); \ + } \ + if(end) \ + current++; \ +} while(0) + +#ifdef CONFIG_MCONSOLE + +extern void mconsole_register_dev(struct mc_device *new); + +#else + +static inline void mconsole_register_dev(struct mc_device *new) +{ +} + +#endif + +#endif diff --git a/arch/um/include/shared/mem.h b/arch/um/include/shared/mem.h new file mode 100644 index 000000000000..5cd40e99e8d5 --- /dev/null +++ b/arch/um/include/shared/mem.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __MEM_H__ +#define __MEM_H__ + +extern int phys_mapping(unsigned long phys, unsigned long long *offset_out); + +extern unsigned long uml_physmem; +static inline unsigned long to_phys(void *virt) +{ + return(((unsigned long) virt) - uml_physmem); +} + +static inline void *to_virt(unsigned long phys) +{ + return((void *) uml_physmem + phys); +} + +#endif diff --git a/arch/um/include/shared/mem_kern.h b/arch/um/include/shared/mem_kern.h new file mode 100644 index 000000000000..cb7e196d366b --- /dev/null +++ b/arch/um/include/shared/mem_kern.h @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2003 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#ifndef __MEM_KERN_H__ +#define __MEM_KERN_H__ + +#include "linux/list.h" +#include "linux/types.h" + +struct remapper { + struct list_head list; + int (*proc)(int, unsigned long, int, __u64); +}; + +extern void register_remapper(struct remapper *info); + +#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: + */ diff --git a/arch/um/include/shared/mem_user.h b/arch/um/include/shared/mem_user.h new file mode 100644 index 000000000000..46384acd547b --- /dev/null +++ b/arch/um/include/shared/mem_user.h @@ -0,0 +1,62 @@ +/* + * arch/um/include/mem_user.h + * + * BRIEF MODULE DESCRIPTION + * user side memory interface for support IO memory inside user mode linux + * + * Copyright (C) 2001 RidgeRun, Inc. + * Author: RidgeRun, Inc. + * Greg Lonnon glonnon@ridgerun.com or info@ridgerun.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _MEM_USER_H +#define _MEM_USER_H + +struct iomem_region { + struct iomem_region *next; + char *driver; + int fd; + int size; + unsigned long phys; + unsigned long virt; +}; + +extern struct iomem_region *iomem_regions; +extern int iomem_size; + +#define ROUND_4M(n) ((((unsigned long) (n)) + (1 << 22)) & ~((1 << 22) - 1)) + +extern int init_mem_user(void); +extern void setup_memory(void *entry); +extern unsigned long find_iomem(char *driver, unsigned long *len_out); +extern int init_maps(unsigned long physmem, unsigned long iomem, + unsigned long highmem); +extern unsigned long get_vm(unsigned long len); +extern void setup_physmem(unsigned long start, unsigned long usable, + unsigned long len, unsigned long long highmem); +extern void add_iomem(char *name, int fd, unsigned long size); +extern unsigned long phys_offset(unsigned long phys); +extern void map_memory(unsigned long virt, unsigned long phys, + unsigned long len, int r, int w, int x); + +#endif diff --git a/arch/um/include/shared/net_kern.h b/arch/um/include/shared/net_kern.h new file mode 100644 index 000000000000..d843c7924a7c --- /dev/null +++ b/arch/um/include/shared/net_kern.h @@ -0,0 +1,70 @@ +/* + * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __UM_NET_KERN_H +#define __UM_NET_KERN_H + +#include <linux/netdevice.h> +#include <linux/platform_device.h> +#include <linux/skbuff.h> +#include <linux/socket.h> +#include <linux/list.h> +#include <linux/workqueue.h> + +struct uml_net { + struct list_head list; + struct net_device *dev; + struct platform_device pdev; + int index; + unsigned char mac[ETH_ALEN]; +}; + +struct uml_net_private { + struct list_head list; + spinlock_t lock; + struct net_device *dev; + struct timer_list tl; + struct net_device_stats stats; + struct work_struct work; + int fd; + unsigned char mac[ETH_ALEN]; + int max_packet; + unsigned short (*protocol)(struct sk_buff *); + int (*open)(void *); + void (*close)(int, void *); + void (*remove)(void *); + int (*read)(int, struct sk_buff *skb, struct uml_net_private *); + int (*write)(int, struct sk_buff *skb, struct uml_net_private *); + + void (*add_address)(unsigned char *, unsigned char *, void *); + void (*delete_address)(unsigned char *, unsigned char *, void *); + char user[0]; +}; + +struct net_kern_info { + void (*init)(struct net_device *, void *); + unsigned short (*protocol)(struct sk_buff *); + int (*read)(int, struct sk_buff *skb, struct uml_net_private *); + int (*write)(int, struct sk_buff *skb, struct uml_net_private *); +}; + +struct transport { + struct list_head list; + const char *name; + int (* const setup)(char *, char **, void *); + const struct net_user_info *user; + const struct net_kern_info *kern; + const int private_size; + const int setup_size; +}; + +extern struct net_device *ether_init(int); +extern unsigned short ether_protocol(struct sk_buff *); +extern int tap_setup_common(char *str, char *type, char **dev_name, + char **mac_out, char **gate_addr); +extern void register_transport(struct transport *new); +extern unsigned short eth_protocol(struct sk_buff *skb); + +#endif diff --git a/arch/um/include/shared/net_user.h b/arch/um/include/shared/net_user.h new file mode 100644 index 000000000000..63bee158cd8e --- /dev/null +++ b/arch/um/include/shared/net_user.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __UM_NET_USER_H__ +#define __UM_NET_USER_H__ + +#define ETH_ADDR_LEN (6) +#define ETH_HEADER_ETHERTAP (16) +#define ETH_HEADER_OTHER (14) +#define ETH_MAX_PACKET (1500) + +#define UML_NET_VERSION (4) + +struct net_user_info { + int (*init)(void *, void *); + int (*open)(void *); + void (*close)(int, void *); + void (*remove)(void *); + void (*add_address)(unsigned char *, unsigned char *, void *); + void (*delete_address)(unsigned char *, unsigned char *, void *); + int max_packet; + int mtu; +}; + +extern void ether_user_init(void *data, void *dev); +extern void iter_addresses(void *d, void (*cb)(unsigned char *, + unsigned char *, void *), + void *arg); + +extern void *get_output_buffer(int *len_out); +extern void free_output_buffer(void *buffer); + +extern int tap_open_common(void *dev, char *gate_addr); +extern void tap_check_ips(char *gate_addr, unsigned char *eth_addr); + +extern void read_output(int fd, char *output_out, int len); + +extern int net_read(int fd, void *buf, int len); +extern int net_recvfrom(int fd, void *buf, int len); +extern int net_write(int fd, void *buf, int len); +extern int net_send(int fd, void *buf, int len); +extern int net_sendto(int fd, void *buf, int len, void *to, int sock_len); + +extern void open_addr(unsigned char *addr, unsigned char *netmask, void *arg); +extern void close_addr(unsigned char *addr, unsigned char *netmask, void *arg); + +extern char *split_if_spec(char *str, ...); + +extern int dev_netmask(void *d, void *m); + +#endif diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h new file mode 100644 index 000000000000..2aaffa04fc8f --- /dev/null +++ b/arch/um/include/shared/os.h @@ -0,0 +1,304 @@ +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __OS_H__ +#define __OS_H__ + +#include <stdarg.h> +#include "irq_user.h" +#include "longjmp.h" +#include "mm_id.h" +#include "sysdep/tls.h" +#include "../../os/include/file.h" + +#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR)) + +#define OS_TYPE_FILE 1 +#define OS_TYPE_DIR 2 +#define OS_TYPE_SYMLINK 3 +#define OS_TYPE_CHARDEV 4 +#define OS_TYPE_BLOCKDEV 5 +#define OS_TYPE_FIFO 6 +#define OS_TYPE_SOCK 7 + +/* os_access() flags */ +#define OS_ACC_F_OK 0 /* Test for existence. */ +#define OS_ACC_X_OK 1 /* Test for execute permission. */ +#define OS_ACC_W_OK 2 /* Test for write permission. */ +#define OS_ACC_R_OK 4 /* Test for read permission. */ +#define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */ + +/* + * types taken from stat_file() in hostfs_user.c + * (if they are wrong here, they are wrong there...). + */ +struct uml_stat { + int ust_dev; /* device */ + unsigned long long ust_ino; /* inode */ + int ust_mode; /* protection */ + int ust_nlink; /* number of hard links */ + int ust_uid; /* user ID of owner */ + int ust_gid; /* group ID of owner */ + unsigned long long ust_size; /* total size, in bytes */ + int ust_blksize; /* blocksize for filesystem I/O */ + unsigned long long ust_blocks; /* number of blocks allocated */ + unsigned long ust_atime; /* time of last access */ + unsigned long ust_mtime; /* time of last modification */ + unsigned long ust_ctime; /* time of last change */ +}; + +struct openflags { + unsigned int r : 1; + unsigned int w : 1; + unsigned int s : 1; /* O_SYNC */ + unsigned int c : 1; /* O_CREAT */ + unsigned int t : 1; /* O_TRUNC */ + unsigned int a : 1; /* O_APPEND */ + unsigned int e : 1; /* O_EXCL */ + unsigned int cl : 1; /* FD_CLOEXEC */ +}; + +#define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \ + .t = 0, .a = 0, .e = 0, .cl = 0 }) + +static inline struct openflags of_read(struct openflags flags) +{ + flags.r = 1; + return flags; +} + +static inline struct openflags of_write(struct openflags flags) +{ + flags.w = 1; + return flags; +} + +static inline struct openflags of_rdwr(struct openflags flags) +{ + return of_read(of_write(flags)); +} + +static inline struct openflags of_set_rw(struct openflags flags, int r, int w) +{ + flags.r = r; + flags.w = w; + return flags; +} + +static inline struct openflags of_sync(struct openflags flags) +{ + flags.s = 1; + return flags; +} + +static inline struct openflags of_create(struct openflags flags) +{ + flags.c = 1; + return flags; +} + +static inline struct openflags of_trunc(struct openflags flags) +{ + flags.t = 1; + return flags; +} + +static inline struct openflags of_append(struct openflags flags) +{ + flags.a = 1; + return flags; +} + +static inline struct openflags of_excl(struct openflags flags) +{ + flags.e = 1; + return flags; +} + +static inline struct openflags of_cloexec(struct openflags flags) +{ + flags.cl = 1; + return flags; +} + +/* file.c */ +extern int os_stat_file(const char *file_name, struct uml_stat *buf); +extern int os_stat_fd(const int fd, struct uml_stat *buf); +extern int os_access(const char *file, int mode); +extern int os_set_exec_close(int fd); +extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg); +extern int os_get_ifname(int fd, char *namebuf); +extern int os_set_slip(int fd); +extern int os_mode_fd(int fd, int mode); + +extern int os_seek_file(int fd, unsigned long long offset); +extern int os_open_file(const char *file, struct openflags flags, int mode); +extern int os_read_file(int fd, void *buf, int len); +extern int os_write_file(int fd, const void *buf, int count); +extern int os_file_size(const char *file, unsigned long long *size_out); +extern int os_file_modtime(const char *file, unsigned long *modtime); +extern int os_pipe(int *fd, int stream, int close_on_exec); +extern int os_set_fd_async(int fd); +extern int os_clear_fd_async(int fd); +extern int os_set_fd_block(int fd, int blocking); +extern int os_accept_connection(int fd); +extern int os_create_unix_socket(const char *file, int len, int close_on_exec); +extern int os_shutdown_socket(int fd, int r, int w); +extern void os_close_file(int fd); +extern int os_rcv_fd(int fd, int *helper_pid_out); +extern int create_unix_socket(char *file, int len, int close_on_exec); +extern int os_connect_socket(const char *name); +extern int os_file_type(char *file); +extern int os_file_mode(const char *file, struct openflags *mode_out); +extern int os_lock_file(int fd, int excl); +extern void os_flush_stdout(void); +extern int os_stat_filesystem(char *path, long *bsize_out, + long long *blocks_out, long long *bfree_out, + long long *bavail_out, long long *files_out, + long long *ffree_out, void *fsid_out, + int fsid_size, long *namelen_out, + long *spare_out); +extern int os_change_dir(char *dir); +extern int os_fchange_dir(int fd); + +/* start_up.c */ +extern void os_early_checks(void); +extern void can_do_skas(void); +extern void os_check_bugs(void); +extern void check_host_supports_tls(int *supports_tls, int *tls_min); + +/* mem.c */ +extern int create_mem_file(unsigned long long len); + +/* process.c */ +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, int reap_child); +extern void os_kill_ptraced_process(int pid, int reap_child); +extern long os_ptrace_ldt(long pid, long addr, long data); + +extern int os_getpid(void); +extern int os_getpgrp(void); + +extern void init_new_thread_signals(void); +extern int run_kernel_thread(int (*fn)(void *), void *arg, jmp_buf **jmp_ptr); + +extern int os_map_memory(void *virt, int fd, unsigned long 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); +extern int os_drop_memory(void *addr, int length); +extern int can_drop_memory(void); +extern void os_flush_stdout(void); + +/* uaccess.c */ +extern unsigned long __do_user_copy(void *to, const void *from, int n, + void **fault_addr, jmp_buf **fault_catcher, + void (*op)(void *to, const void *from, + int n), int *faulted_out); + +/* execvp.c */ +extern int execvp_noalloc(char *buf, const char *file, char *const argv[]); +/* helper.c */ +extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv); +extern int run_helper_thread(int (*proc)(void *), void *arg, + unsigned int flags, unsigned long *stack_out); +extern int helper_wait(int pid); + + +/* tls.c */ +extern int os_set_thread_area(user_desc_t *info, int pid); +extern int os_get_thread_area(user_desc_t *info, int pid); + +/* umid.c */ +extern int umid_file_name(char *name, char *buf, int len); +extern int set_umid(char *name); +extern char *get_umid(void); + +/* signal.c */ +extern void timer_init(void); +extern void set_sigstack(void *sig_stack, int size); +extern void remove_sigstack(void); +extern void set_handler(int sig, void (*handler)(int), int flags, ...); +extern int change_sig(int signal, int on); +extern void block_signals(void); +extern void unblock_signals(void); +extern int get_signals(void); +extern int set_signals(int enable); + +/* util.c */ +extern void stack_protections(unsigned long address); +extern int raw(int fd); +extern void setup_machinename(char *machine_out); +extern void setup_hostinfo(char *buf, int len); +extern void os_dump_core(void) __attribute__ ((noreturn)); + +/* time.c */ +extern void idle_sleep(unsigned long long nsecs); +extern int set_interval(void); +extern int timer_one_shot(int ticks); +extern long long disable_timer(void); +extern void uml_idle_timer(void); +extern long long os_nsecs(void); + +/* skas/mem.c */ +extern long run_syscall_stub(struct mm_id * mm_idp, + int syscall, unsigned long *args, long expected, + void **addr, int done); +extern long syscall_stub_data(struct mm_id * mm_idp, + unsigned long *data, int data_count, + void **addr, void **stub_addr); +extern int map(struct mm_id * mm_idp, unsigned long virt, + unsigned long len, int prot, int phys_fd, + unsigned long long offset, int done, void **data); +extern int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len, + int done, void **data); +extern int protect(struct mm_id * mm_idp, unsigned long addr, + unsigned long len, unsigned int prot, int done, void **data); + +/* skas/process.c */ +extern int is_skas_winch(int pid, int fd, void *data); +extern int start_userspace(unsigned long stub_stack); +extern int copy_context_skas0(unsigned long stack, int pid); +extern void userspace(struct uml_pt_regs *regs); +extern int map_stub_pages(int fd, unsigned long code, unsigned long data, + unsigned long stack); +extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void)); +extern void switch_threads(jmp_buf *me, jmp_buf *you); +extern int start_idle_thread(void *stack, jmp_buf *switch_buf); +extern void initial_thread_cb_skas(void (*proc)(void *), + void *arg); +extern void halt_skas(void); +extern void reboot_skas(void); + +/* irq.c */ +extern int os_waiting_for_events(struct irq_fd *active_fds); +extern int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds); +extern void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg, + struct irq_fd *active_fds, struct irq_fd ***last_irq_ptr2); +extern void os_free_irq_later(struct irq_fd *active_fds, + int irq, void *dev_id); +extern int os_get_pollfd(int i); +extern void os_set_pollfd(int i, int fd); +extern void os_set_ioignore(void); + +/* sigio.c */ +extern int add_sigio_fd(int fd); +extern int ignore_sigio_fd(int fd); +extern void maybe_sigio_broken(int fd, int read); +extern void sigio_broken(int fd, int read); + +/* sys-x86_64/prctl.c */ +extern int os_arch_prctl(int pid, int code, unsigned long *addr); + +/* tty.c */ +extern int get_pty(void); + +/* sys-$ARCH/task_size.c */ +extern unsigned long os_get_top_address(void); + +#endif diff --git a/arch/um/include/shared/process.h b/arch/um/include/shared/process.h new file mode 100644 index 000000000000..bb873a51262e --- /dev/null +++ b/arch/um/include/shared/process.h @@ -0,0 +1,17 @@ +/* + * Copyright (C) 2000 - 2008 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __PROCESS_H__ +#define __PROCESS_H__ + +#include <signal.h> + +/* Copied from linux/compiler-gcc.h since we can't include it directly */ +#define barrier() __asm__ __volatile__("": : :"memory") + +extern void sig_handler(int sig, struct sigcontext *sc); +extern void alarm_handler(int sig, struct sigcontext *sc); + +#endif diff --git a/arch/um/include/shared/ptrace_user.h b/arch/um/include/shared/ptrace_user.h new file mode 100644 index 000000000000..4bce6e012889 --- /dev/null +++ b/arch/um/include/shared/ptrace_user.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __PTRACE_USER_H__ +#define __PTRACE_USER_H__ + +#include "sysdep/ptrace_user.h" + +extern int ptrace_getregs(long pid, unsigned long *regs_out); +extern int ptrace_setregs(long pid, unsigned long *regs_in); + +/* syscall emulation path in ptrace */ + +#ifndef PTRACE_SYSEMU +#define PTRACE_SYSEMU 31 +#endif +#ifndef PTRACE_SYSEMU_SINGLESTEP +#define PTRACE_SYSEMU_SINGLESTEP 32 +#endif + +/* On architectures, that started to support PTRACE_O_TRACESYSGOOD + * in linux 2.4, there are two different definitions of + * PTRACE_SETOPTIONS: linux 2.4 uses 21 while linux 2.6 uses 0x4200. + * For binary compatibility, 2.6 also supports the old "21", named + * PTRACE_OLDSETOPTION. On these architectures, UML always must use + * "21", to ensure the kernel runs on 2.4 and 2.6 host without + * recompilation. So, we use PTRACE_OLDSETOPTIONS in UML. + * We also want to be able to build the kernel on 2.4, which doesn't + * have PTRACE_OLDSETOPTIONS. So, if it is missing, we declare + * PTRACE_OLDSETOPTIONS to to be the same as PTRACE_SETOPTIONS. + * + * On architectures, that start to support PTRACE_O_TRACESYSGOOD on + * linux 2.6, PTRACE_OLDSETOPTIONS never is defined, and also isn't + * supported by the host kernel. In that case, our trick lets us use + * the new 0x4200 with the name PTRACE_OLDSETOPTIONS. + */ +#ifndef PTRACE_OLDSETOPTIONS +#define PTRACE_OLDSETOPTIONS PTRACE_SETOPTIONS +#endif + +void set_using_sysemu(int value); +int get_using_sysemu(void); +extern int sysemu_supported; + +#define SELECT_PTRACE_OPERATION(sysemu_mode, singlestep_mode) \ + (((int[3][3] ) { \ + { PTRACE_SYSCALL, PTRACE_SYSCALL, PTRACE_SINGLESTEP }, \ + { PTRACE_SYSEMU, PTRACE_SYSEMU, PTRACE_SINGLESTEP }, \ + { PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, \ + PTRACE_SYSEMU_SINGLESTEP } }) \ + [sysemu_mode][singlestep_mode]) + +#endif diff --git a/arch/um/include/shared/registers.h b/arch/um/include/shared/registers.h new file mode 100644 index 000000000000..b0b4589e0ebc --- /dev/null +++ b/arch/um/include/shared/registers.h @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2004 PathScale, Inc + * Licensed under the GPL + */ + +#ifndef __REGISTERS_H +#define __REGISTERS_H + +#include "sysdep/ptrace.h" +#include "sysdep/archsetjmp.h" + +extern int save_fp_registers(int pid, unsigned long *fp_regs); +extern int restore_fp_registers(int pid, unsigned long *fp_regs); +extern int save_fpx_registers(int pid, unsigned long *fp_regs); +extern int restore_fpx_registers(int pid, unsigned long *fp_regs); +extern int save_registers(int pid, struct uml_pt_regs *regs); +extern int restore_registers(int pid, struct uml_pt_regs *regs); +extern int init_registers(int pid); +extern void get_safe_registers(unsigned long *regs); +extern unsigned long get_thread_reg(int reg, jmp_buf *buf); +extern int get_fp_registers(int pid, unsigned long *regs); +extern int put_fp_registers(int pid, unsigned long *regs); + +#endif diff --git a/arch/um/include/shared/sigcontext.h b/arch/um/include/shared/sigcontext.h new file mode 100644 index 000000000000..59816ca7a8df --- /dev/null +++ b/arch/um/include/shared/sigcontext.h @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __UML_SIGCONTEXT_H__ +#define __UML_SIGCONTEXT_H__ + +#include "sysdep/sigcontext.h" + +extern int sc_size(void *data); +extern void sc_to_sc(void *to_ptr, void *from_ptr); + +#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: + */ diff --git a/arch/um/include/shared/sigio.h b/arch/um/include/shared/sigio.h new file mode 100644 index 000000000000..434f1a9ae4b3 --- /dev/null +++ b/arch/um/include/shared/sigio.h @@ -0,0 +1,14 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SIGIO_H__ +#define __SIGIO_H__ + +extern int write_sigio_irq(int fd); +extern int register_sigio_fd(int fd); +extern void sigio_lock(void); +extern void sigio_unlock(void); + +#endif diff --git a/arch/um/include/shared/skas/mm_id.h b/arch/um/include/shared/skas/mm_id.h new file mode 100644 index 000000000000..48dd0989ddaa --- /dev/null +++ b/arch/um/include/shared/skas/mm_id.h @@ -0,0 +1,17 @@ +/* + * Copyright (C) 2005 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __MM_ID_H +#define __MM_ID_H + +struct mm_id { + union { + int mm_fd; + int pid; + } u; + unsigned long stack; +}; + +#endif diff --git a/arch/um/include/shared/skas/proc_mm.h b/arch/um/include/shared/skas/proc_mm.h new file mode 100644 index 000000000000..902809209603 --- /dev/null +++ b/arch/um/include/shared/skas/proc_mm.h @@ -0,0 +1,44 @@ +/* + * 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 diff --git a/arch/um/include/shared/skas/skas.h b/arch/um/include/shared/skas/skas.h new file mode 100644 index 000000000000..64d2c7443306 --- /dev/null +++ b/arch/um/include/shared/skas/skas.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __SKAS_H +#define __SKAS_H + +#include "sysdep/ptrace.h" + +extern int userspace_pid[]; +extern int proc_mm, ptrace_faultinfo, ptrace_ldt; +extern int skas_needs_stub; + +extern int user_thread(unsigned long stack, int flags); +extern void new_thread_handler(void); +extern void handle_syscall(struct uml_pt_regs *regs); +extern int new_mm(unsigned long stack); +extern long execute_syscall_skas(void *r); +extern unsigned long current_stub_stack(void); + +#endif diff --git a/arch/um/include/shared/skas/stub-data.h b/arch/um/include/shared/skas/stub-data.h new file mode 100644 index 000000000000..f6ed92c3727d --- /dev/null +++ b/arch/um/include/shared/skas/stub-data.h @@ -0,0 +1,18 @@ +/* + * Copyright (C) 2005 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __STUB_DATA_H +#define __STUB_DATA_H + +#include <sys/time.h> + +struct stub_data { + long offset; + int fd; + struct itimerval timer; + long err; +}; + +#endif diff --git a/arch/um/include/shared/skas_ptrace.h b/arch/um/include/shared/skas_ptrace.h new file mode 100644 index 000000000000..3d31bbacd016 --- /dev/null +++ b/arch/um/include/shared/skas_ptrace.h @@ -0,0 +1,14 @@ +/* + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __SKAS_PTRACE_H +#define __SKAS_PTRACE_H + +#define PTRACE_FAULTINFO 52 +#define PTRACE_SWITCH_MM 55 + +#include "sysdep/skas_ptrace.h" + +#endif diff --git a/arch/um/include/shared/skas_ptregs.h b/arch/um/include/shared/skas_ptregs.h new file mode 100644 index 000000000000..73db19e9c077 --- /dev/null +++ b/arch/um/include/shared/skas_ptregs.h @@ -0,0 +1,6 @@ +#ifndef __SKAS_PT_REGS_ +#define __SKAS_PT_REGS_ + +#include <user_constants.h> + +#endif diff --git a/arch/um/include/shared/syscall.h b/arch/um/include/shared/syscall.h new file mode 100644 index 000000000000..dda1df901a08 --- /dev/null +++ b/arch/um/include/shared/syscall.h @@ -0,0 +1,12 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSCALL_USER_H +#define __SYSCALL_USER_H + +extern int record_syscall_start(int syscall); +extern void record_syscall_end(int index, long result); + +#endif diff --git a/arch/um/include/shared/sysdep-i386/archsetjmp.h b/arch/um/include/shared/sysdep-i386/archsetjmp.h new file mode 100644 index 000000000000..0f312085ce1d --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/archsetjmp.h @@ -0,0 +1,22 @@ +/* + * arch/um/include/sysdep-i386/archsetjmp.h + */ + +#ifndef _KLIBC_ARCHSETJMP_H +#define _KLIBC_ARCHSETJMP_H + +struct __jmp_buf { + unsigned int __ebx; + unsigned int __esp; + unsigned int __ebp; + unsigned int __esi; + unsigned int __edi; + unsigned int __eip; +}; + +typedef struct __jmp_buf jmp_buf[1]; + +#define JB_IP __eip +#define JB_SP __esp + +#endif /* _SETJMP_H */ diff --git a/arch/um/include/shared/sysdep-i386/barrier.h b/arch/um/include/shared/sysdep-i386/barrier.h new file mode 100644 index 000000000000..b58d52c5b2f4 --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/barrier.h @@ -0,0 +1,9 @@ +#ifndef __SYSDEP_I386_BARRIER_H +#define __SYSDEP_I386_BARRIER_H + +/* Copied from include/asm-i386 for use by userspace. i386 has the option + * of using mfence, but I'm just using this, which works everywhere, for now. + */ +#define mb() asm volatile("lock; addl $0,0(%esp)") + +#endif diff --git a/arch/um/include/shared/sysdep-i386/checksum.h b/arch/um/include/shared/sysdep-i386/checksum.h new file mode 100644 index 000000000000..0cb4645cbeb8 --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/checksum.h @@ -0,0 +1,211 @@ +/* + * Licensed under the GPL + */ + +#ifndef __UM_SYSDEP_CHECKSUM_H +#define __UM_SYSDEP_CHECKSUM_H + +#include "linux/in6.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 + */ +__wsum csum_partial(const void *buff, int len, __wsum sum); + +/* + * 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 + * access_ok(). + */ + +static __inline__ +__wsum csum_partial_copy_nocheck(const void *src, void *dst, + int len, __wsum sum) +{ + memcpy(dst, src, len); + return csum_partial(dst, len, 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 + */ + +static __inline__ +__wsum csum_partial_copy_from_user(const void __user *src, void *dst, + int len, __wsum sum, int *err_ptr) +{ + if (copy_from_user(dst, src, len)) { + *err_ptr = -EFAULT; + return (__force __wsum)-1; + } + + return csum_partial(dst, len, 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 __sum16 ip_fast_csum(const void *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) + : "memory"); + return (__force __sum16)sum; +} + +/* + * Fold a partial checksum + */ + +static inline __sum16 csum_fold(__wsum sum) +{ + __asm__( + "addl %1, %0 ;\n" + "adcl $0xffff, %0 ;\n" + : "=r" (sum) + : "r" ((__force u32)sum << 16), + "0" ((__force u32)sum & 0xffff0000) + ); + return (__force __sum16)(~(__force u32)sum >> 16); +} + +static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr, + unsigned short len, + unsigned short proto, + __wsum 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"((len + proto) << 8), "0"(sum)); + return sum; +} + +/* + * computes the checksum of the TCP/UDP pseudo-header + * returns a 16-bit checksum, already complemented + */ +static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr, + unsigned short len, + unsigned short proto, + __wsum 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 __sum16 ip_compute_csum(const void *buff, int len) +{ + return csum_fold (csum_partial(buff, len, 0)); +} + +#define _HAVE_ARCH_IPV6_CSUM +static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr, + const struct in6_addr *daddr, + __u32 len, unsigned short proto, + __wsum 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__ __wsum csum_and_copy_to_user(const void *src, + void __user *dst, + int len, __wsum sum, int *err_ptr) +{ + if (access_ok(VERIFY_WRITE, dst, len)) { + if (copy_to_user(dst, src, len)) { + *err_ptr = -EFAULT; + return (__force __wsum)-1; + } + + return csum_partial(src, len, sum); + } + + if (len) + *err_ptr = -EFAULT; + + return (__force __wsum)-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: + */ diff --git a/arch/um/include/shared/sysdep-i386/faultinfo.h b/arch/um/include/shared/sysdep-i386/faultinfo.h new file mode 100644 index 000000000000..db437cc373bc --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/faultinfo.h @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2004 Fujitsu Siemens Computers GmbH + * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com> + * Licensed under the GPL + */ + +#ifndef __FAULTINFO_I386_H +#define __FAULTINFO_I386_H + +/* this structure contains the full arch-specific faultinfo + * from the traps. + * On i386, ptrace_faultinfo unfortunately doesn't provide + * all the info, since trap_no is missing. + * All common elements are defined at the same position in + * both structures, thus making it easy to copy the + * contents without knowledge about the structure elements. + */ +struct faultinfo { + int error_code; /* in ptrace_faultinfo misleadingly called is_write */ + unsigned long cr2; /* in ptrace_faultinfo called addr */ + int trap_no; /* missing in ptrace_faultinfo */ +}; + +#define FAULT_WRITE(fi) ((fi).error_code & 2) +#define FAULT_ADDRESS(fi) ((fi).cr2) + +#define PTRACE_FULL_FAULTINFO 0 + +#endif diff --git a/arch/um/include/shared/sysdep-i386/kernel-offsets.h b/arch/um/include/shared/sysdep-i386/kernel-offsets.h new file mode 100644 index 000000000000..5868526b5eef --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/kernel-offsets.h @@ -0,0 +1,21 @@ +#include <linux/stddef.h> +#include <linux/sched.h> +#include <linux/elf.h> +#include <linux/crypto.h> +#include <asm/mman.h> + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define STR(x) #x +#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " STR(val) " " #val: : ) + +#define BLANK() asm volatile("\n->" : : ) + +#define OFFSET(sym, str, mem) \ + DEFINE(sym, offsetof(struct str, mem)); + +void foo(void) +{ +#include <common-offsets.h> +} diff --git a/arch/um/include/shared/sysdep-i386/ptrace.h b/arch/um/include/shared/sysdep-i386/ptrace.h new file mode 100644 index 000000000000..11c08969d134 --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/ptrace.h @@ -0,0 +1,171 @@ +/* + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_I386_PTRACE_H +#define __SYSDEP_I386_PTRACE_H + +#include "uml-config.h" +#include "user_constants.h" +#include "sysdep/faultinfo.h" + +#define MAX_REG_NR (UM_FRAME_SIZE / sizeof(unsigned long)) +#define MAX_REG_OFFSET (UM_FRAME_SIZE) + +static inline void update_debugregs(int seq) {} + +/* syscall emulation path in ptrace */ + +#ifndef PTRACE_SYSEMU +#define PTRACE_SYSEMU 31 +#endif + +void set_using_sysemu(int value); +int get_using_sysemu(void); +extern int sysemu_supported; + +#include "skas_ptregs.h" + +#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)) + +#ifndef PTRACE_SYSEMU_SINGLESTEP +#define PTRACE_SYSEMU_SINGLESTEP 32 +#endif + +struct uml_pt_regs { + unsigned long gp[MAX_REG_NR]; + struct faultinfo faultinfo; + long syscall; + int is_user; +}; + +#define EMPTY_UML_PT_REGS { } + +#define UPT_IP(r) REGS_IP((r)->gp) +#define UPT_SP(r) REGS_SP((r)->gp) +#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp) +#define UPT_EAX(r) REGS_EAX((r)->gp) +#define UPT_EBX(r) REGS_EBX((r)->gp) +#define UPT_ECX(r) REGS_ECX((r)->gp) +#define UPT_EDX(r) REGS_EDX((r)->gp) +#define UPT_ESI(r) REGS_ESI((r)->gp) +#define UPT_EDI(r) REGS_EDI((r)->gp) +#define UPT_EBP(r) REGS_EBP((r)->gp) +#define UPT_ORIG_EAX(r) ((r)->syscall) +#define UPT_CS(r) REGS_CS((r)->gp) +#define UPT_SS(r) REGS_SS((r)->gp) +#define UPT_DS(r) REGS_DS((r)->gp) +#define UPT_ES(r) REGS_ES((r)->gp) +#define UPT_FS(r) REGS_FS((r)->gp) +#define UPT_GS(r) REGS_GS((r)->gp) + +#define UPT_SYSCALL_ARG1(r) UPT_EBX(r) +#define UPT_SYSCALL_ARG2(r) UPT_ECX(r) +#define UPT_SYSCALL_ARG3(r) UPT_EDX(r) +#define UPT_SYSCALL_ARG4(r) UPT_ESI(r) +#define UPT_SYSCALL_ARG5(r) UPT_EDI(r) +#define UPT_SYSCALL_ARG6(r) UPT_EBP(r) + +extern int user_context(unsigned long sp); + +#define UPT_IS_USER(r) ((r)->is_user) + +struct syscall_args { + unsigned long args[6]; +}; + +#define SYSCALL_ARGS(r) ((struct syscall_args) \ + { .args = { UPT_SYSCALL_ARG1(r), \ + UPT_SYSCALL_ARG2(r), \ + UPT_SYSCALL_ARG3(r), \ + UPT_SYSCALL_ARG4(r), \ + UPT_SYSCALL_ARG5(r), \ + UPT_SYSCALL_ARG6(r) } } ) + +#define UPT_REG(regs, reg) \ + ({ unsigned long val; \ + switch(reg){ \ + case EIP: val = UPT_IP(regs); break; \ + case UESP: val = UPT_SP(regs); break; \ + case EAX: val = UPT_EAX(regs); break; \ + case EBX: val = UPT_EBX(regs); break; \ + case ECX: val = UPT_ECX(regs); break; \ + case EDX: val = UPT_EDX(regs); break; \ + case ESI: val = UPT_ESI(regs); break; \ + case EDI: val = UPT_EDI(regs); break; \ + case EBP: val = UPT_EBP(regs); break; \ + case ORIG_EAX: val = UPT_ORIG_EAX(regs); break; \ + case CS: val = UPT_CS(regs); break; \ + case SS: val = UPT_SS(regs); break; \ + case DS: val = UPT_DS(regs); break; \ + case ES: val = UPT_ES(regs); break; \ + case FS: val = UPT_FS(regs); break; \ + case GS: val = UPT_GS(regs); break; \ + case EFL: val = UPT_EFLAGS(regs); break; \ + default : \ + panic("Bad register in UPT_REG : %d\n", reg); \ + val = -1; \ + } \ + val; \ + }) + +#define UPT_SET(regs, reg, val) \ + do { \ + switch(reg){ \ + case EIP: UPT_IP(regs) = val; break; \ + case UESP: UPT_SP(regs) = val; break; \ + case EAX: UPT_EAX(regs) = val; break; \ + case EBX: UPT_EBX(regs) = val; break; \ + case ECX: UPT_ECX(regs) = val; break; \ + case EDX: UPT_EDX(regs) = val; break; \ + case ESI: UPT_ESI(regs) = val; break; \ + case EDI: UPT_EDI(regs) = val; break; \ + case EBP: UPT_EBP(regs) = val; break; \ + case ORIG_EAX: UPT_ORIG_EAX(regs) = val; break; \ + case CS: UPT_CS(regs) = val; break; \ + case SS: UPT_SS(regs) = val; break; \ + case DS: UPT_DS(regs) = val; break; \ + case ES: UPT_ES(regs) = val; break; \ + case FS: UPT_FS(regs) = val; break; \ + case GS: UPT_GS(regs) = val; break; \ + case EFL: UPT_EFLAGS(regs) = val; break; \ + default : \ + panic("Bad register in UPT_SET : %d\n", reg); \ + break; \ + } \ + } while (0) + +#define UPT_SET_SYSCALL_RETURN(r, res) \ + REGS_SET_SYSCALL_RETURN((r)->regs, (res)) + +#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp) + +#define UPT_ORIG_SYSCALL(r) UPT_EAX(r) +#define UPT_SYSCALL_NR(r) UPT_ORIG_EAX(r) +#define UPT_SYSCALL_RET(r) UPT_EAX(r) + +#define UPT_FAULTINFO(r) (&(r)->faultinfo) + +extern void arch_init_registers(int pid); + +#endif diff --git a/arch/um/include/shared/sysdep-i386/ptrace_user.h b/arch/um/include/shared/sysdep-i386/ptrace_user.h new file mode 100644 index 000000000000..ef56247e4143 --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/ptrace_user.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_I386_PTRACE_USER_H__ +#define __SYSDEP_I386_PTRACE_USER_H__ + +#include <sys/ptrace.h> +#include <linux/ptrace.h> +#include <asm/ptrace.h> +#include "user_constants.h" + +#define PT_OFFSET(r) ((r) * sizeof(long)) + +#define PT_SYSCALL_NR(regs) ((regs)[ORIG_EAX]) +#define PT_SYSCALL_NR_OFFSET PT_OFFSET(ORIG_EAX) + +#define PT_SYSCALL_ARG1_OFFSET PT_OFFSET(EBX) +#define PT_SYSCALL_ARG2_OFFSET PT_OFFSET(ECX) +#define PT_SYSCALL_ARG3_OFFSET PT_OFFSET(EDX) +#define PT_SYSCALL_ARG4_OFFSET PT_OFFSET(ESI) +#define PT_SYSCALL_ARG5_OFFSET PT_OFFSET(EDI) +#define PT_SYSCALL_ARG6_OFFSET PT_OFFSET(EBP) + +#define PT_SYSCALL_RET_OFFSET PT_OFFSET(EAX) + +#define REGS_SYSCALL_NR EAX /* This is used before a system call */ +#define REGS_SYSCALL_ARG1 EBX +#define REGS_SYSCALL_ARG2 ECX +#define REGS_SYSCALL_ARG3 EDX +#define REGS_SYSCALL_ARG4 ESI +#define REGS_SYSCALL_ARG5 EDI +#define REGS_SYSCALL_ARG6 EBP + +#define REGS_IP_INDEX EIP +#define REGS_SP_INDEX UESP + +#define PT_IP_OFFSET PT_OFFSET(EIP) +#define PT_IP(regs) ((regs)[EIP]) +#define PT_SP_OFFSET PT_OFFSET(UESP) +#define PT_SP(regs) ((regs)[UESP]) + +#define FP_SIZE ((HOST_FPX_SIZE > HOST_FP_SIZE) ? HOST_FPX_SIZE : HOST_FP_SIZE) + +#ifndef FRAME_SIZE +#define FRAME_SIZE (17) +#endif + +#endif diff --git a/arch/um/include/shared/sysdep-i386/sc.h b/arch/um/include/shared/sysdep-i386/sc.h new file mode 100644 index 000000000000..c57d1780ad37 --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/sc.h @@ -0,0 +1,44 @@ +#ifndef __SYSDEP_I386_SC_H +#define __SYSDEP_I386_SC_H + +#include <user_constants.h> + +#define SC_OFFSET(sc, field) \ + *((unsigned long *) &(((char *) (sc))[HOST_##field])) +#define SC_FP_OFFSET(sc, field) \ + *((unsigned long *) &(((char *) (SC_FPSTATE(sc)))[HOST_##field])) +#define SC_FP_OFFSET_PTR(sc, field, type) \ + ((type *) &(((char *) (SC_FPSTATE(sc)))[HOST_##field])) + +#define SC_IP(sc) SC_OFFSET(sc, SC_IP) +#define SC_SP(sc) SC_OFFSET(sc, SC_SP) +#define SC_FS(sc) SC_OFFSET(sc, SC_FS) +#define SC_GS(sc) SC_OFFSET(sc, SC_GS) +#define SC_DS(sc) SC_OFFSET(sc, SC_DS) +#define SC_ES(sc) SC_OFFSET(sc, SC_ES) +#define SC_SS(sc) SC_OFFSET(sc, SC_SS) +#define SC_CS(sc) SC_OFFSET(sc, SC_CS) +#define SC_EFLAGS(sc) SC_OFFSET(sc, SC_EFLAGS) +#define SC_EAX(sc) SC_OFFSET(sc, SC_EAX) +#define SC_EBX(sc) SC_OFFSET(sc, SC_EBX) +#define SC_ECX(sc) SC_OFFSET(sc, SC_ECX) +#define SC_EDX(sc) SC_OFFSET(sc, SC_EDX) +#define SC_EDI(sc) SC_OFFSET(sc, SC_EDI) +#define SC_ESI(sc) SC_OFFSET(sc, SC_ESI) +#define SC_EBP(sc) SC_OFFSET(sc, SC_EBP) +#define SC_TRAPNO(sc) SC_OFFSET(sc, SC_TRAPNO) +#define SC_ERR(sc) SC_OFFSET(sc, SC_ERR) +#define SC_CR2(sc) SC_OFFSET(sc, SC_CR2) +#define SC_FPSTATE(sc) SC_OFFSET(sc, SC_FPSTATE) +#define SC_SIGMASK(sc) SC_OFFSET(sc, SC_SIGMASK) +#define SC_FP_CW(sc) SC_FP_OFFSET(sc, SC_FP_CW) +#define SC_FP_SW(sc) SC_FP_OFFSET(sc, SC_FP_SW) +#define SC_FP_TAG(sc) SC_FP_OFFSET(sc, SC_FP_TAG) +#define SC_FP_IPOFF(sc) SC_FP_OFFSET(sc, SC_FP_IPOFF) +#define SC_FP_CSSEL(sc) SC_FP_OFFSET(sc, SC_FP_CSSEL) +#define SC_FP_DATAOFF(sc) SC_FP_OFFSET(sc, SC_FP_DATAOFF) +#define SC_FP_DATASEL(sc) SC_FP_OFFSET(sc, SC_FP_DATASEL) +#define SC_FP_ST(sc) SC_FP_OFFSET_PTR(sc, SC_FP_ST, struct _fpstate) +#define SC_FXSR_ENV(sc) SC_FP_OFFSET_PTR(sc, SC_FXSR_ENV, void) + +#endif diff --git a/arch/um/include/shared/sysdep-i386/sigcontext.h b/arch/um/include/shared/sysdep-i386/sigcontext.h new file mode 100644 index 000000000000..f583c87111a0 --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/sigcontext.h @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __SYS_SIGCONTEXT_I386_H +#define __SYS_SIGCONTEXT_I386_H + +#include "sysdep/sc.h" + +#define IP_RESTART_SYSCALL(ip) ((ip) -= 2) + +#define GET_FAULTINFO_FROM_SC(fi, sc) \ + { \ + (fi).cr2 = SC_CR2(sc); \ + (fi).error_code = SC_ERR(sc); \ + (fi).trap_no = SC_TRAPNO(sc); \ + } + +/* This is Page Fault */ +#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14) + +/* SKAS3 has no trap_no on i386, but get_skas_faultinfo() sets it to 0. */ +#define SEGV_MAYBE_FIXABLE(fi) ((fi)->trap_no == 0 && ptrace_faultinfo) + +#endif diff --git a/arch/um/include/shared/sysdep-i386/skas_ptrace.h b/arch/um/include/shared/sysdep-i386/skas_ptrace.h new file mode 100644 index 000000000000..e27b8a791773 --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/skas_ptrace.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_I386_SKAS_PTRACE_H +#define __SYSDEP_I386_SKAS_PTRACE_H + +struct ptrace_faultinfo { + int is_write; + unsigned long addr; +}; + +struct ptrace_ldt { + int func; + void *ptr; + unsigned long bytecount; +}; + +#define PTRACE_LDT 54 + +#endif diff --git a/arch/um/include/shared/sysdep-i386/stub.h b/arch/um/include/shared/sysdep-i386/stub.h new file mode 100644 index 000000000000..8c097b87fca7 --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/stub.h @@ -0,0 +1,102 @@ +/* + * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_STUB_H +#define __SYSDEP_STUB_H + +#include <sys/mman.h> +#include <asm/ptrace.h> +#include <asm/unistd.h> +#include "as-layout.h" +#include "stub-data.h" +#include "kern_constants.h" +#include "uml-config.h" + +extern void stub_segv_handler(int sig); +extern void stub_clone_handler(void); + +#define STUB_SYSCALL_RET EAX +#define STUB_MMAP_NR __NR_mmap2 +#define MMAP_OFFSET(o) ((o) >> UM_KERN_PAGE_SHIFT) + +static inline long stub_syscall0(long syscall) +{ + long ret; + + __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall)); + + return ret; +} + +static inline long stub_syscall1(long syscall, long arg1) +{ + long ret; + + __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1)); + + return ret; +} + +static inline long stub_syscall2(long syscall, long arg1, long arg2) +{ + long ret; + + __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1), + "c" (arg2)); + + return ret; +} + +static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3) +{ + long ret; + + __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1), + "c" (arg2), "d" (arg3)); + + return ret; +} + +static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3, + long arg4) +{ + long ret; + + __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1), + "c" (arg2), "d" (arg3), "S" (arg4)); + + return ret; +} + +static inline long stub_syscall5(long syscall, long arg1, long arg2, long arg3, + long arg4, long arg5) +{ + long ret; + + __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1), + "c" (arg2), "d" (arg3), "S" (arg4), "D" (arg5)); + + return ret; +} + +static inline void trap_myself(void) +{ + __asm("int3"); +} + +static inline void remap_stack(int fd, unsigned long offset) +{ + __asm__ volatile ("movl %%eax,%%ebp ; movl %0,%%eax ; int $0x80 ;" + "movl %7, %%ebx ; movl %%eax, (%%ebx)" + : : "g" (STUB_MMAP_NR), "b" (STUB_DATA), + "c" (UM_KERN_PAGE_SIZE), + "d" (PROT_READ | PROT_WRITE), + "S" (MAP_FIXED | MAP_SHARED), "D" (fd), + "a" (offset), + "i" (&((struct stub_data *) STUB_DATA)->err) + : "memory"); +} + +#endif diff --git a/arch/um/include/shared/sysdep-i386/syscalls.h b/arch/um/include/shared/sysdep-i386/syscalls.h new file mode 100644 index 000000000000..905698197e35 --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/syscalls.h @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2000 - 2008 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#include "asm/unistd.h" +#include "sysdep/ptrace.h" + +typedef long syscall_handler_t(struct pt_regs); + +/* Not declared on x86, incompatible declarations on x86_64, so these have + * to go here rather than in sys_call_table.c + */ +extern syscall_handler_t sys_rt_sigaction; + +extern syscall_handler_t old_mmap_i386; + +extern syscall_handler_t *sys_call_table[]; + +#define EXECUTE_SYSCALL(syscall, regs) \ + ((long (*)(struct syscall_args)) \ + (*sys_call_table[syscall]))(SYSCALL_ARGS(®s->regs)) + +extern long sys_mmap2(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff); diff --git a/arch/um/include/shared/sysdep-i386/tls.h b/arch/um/include/shared/sysdep-i386/tls.h new file mode 100644 index 000000000000..918fd3c5ff9c --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/tls.h @@ -0,0 +1,32 @@ +#ifndef _SYSDEP_TLS_H +#define _SYSDEP_TLS_H + +# ifndef __KERNEL__ + +/* Change name to avoid conflicts with the original one from <asm/ldt.h>, which + * may be named user_desc (but in 2.4 and in header matching its API was named + * modify_ldt_ldt_s). */ + +typedef struct um_dup_user_desc { + unsigned int entry_number; + unsigned int base_addr; + unsigned int limit; + unsigned int seg_32bit:1; + unsigned int contents:2; + unsigned int read_exec_only:1; + unsigned int limit_in_pages:1; + unsigned int seg_not_present:1; + unsigned int useable:1; +} user_desc_t; + +# else /* __KERNEL__ */ + +# include <asm/ldt.h> +typedef struct user_desc user_desc_t; + +# endif /* __KERNEL__ */ + +#define GDT_ENTRY_TLS_MIN_I386 6 +#define GDT_ENTRY_TLS_MIN_X86_64 12 + +#endif /* _SYSDEP_TLS_H */ diff --git a/arch/um/include/shared/sysdep-ia64/ptrace.h b/arch/um/include/shared/sysdep-ia64/ptrace.h new file mode 100644 index 000000000000..42dd8fb6f2f9 --- /dev/null +++ b/arch/um/include/shared/sysdep-ia64/ptrace.h @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_IA64_PTRACE_H +#define __SYSDEP_IA64_PTRACE_H + +struct sys_pt_regs { + int foo; +}; + +#define EMPTY_REGS { 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 + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/include/shared/sysdep-ia64/sigcontext.h b/arch/um/include/shared/sysdep-ia64/sigcontext.h new file mode 100644 index 000000000000..f15fb25260ba --- /dev/null +++ b/arch/um/include/shared/sysdep-ia64/sigcontext.h @@ -0,0 +1,20 @@ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_IA64_SIGCONTEXT_H +#define __SYSDEP_IA64_SIGCONTEXT_H + +#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: + */ diff --git a/arch/um/include/shared/sysdep-ia64/skas_ptrace.h b/arch/um/include/shared/sysdep-ia64/skas_ptrace.h new file mode 100644 index 000000000000..25a38e715702 --- /dev/null +++ b/arch/um/include/shared/sysdep-ia64/skas_ptrace.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_IA64_SKAS_PTRACE_H +#define __SYSDEP_IA64_SKAS_PTRACE_H + +struct ptrace_faultinfo { + int is_write; + unsigned long addr; +}; + +struct ptrace_ldt { + int func; + void *ptr; + unsigned long bytecount; +}; + +#define PTRACE_LDT 54 + +#endif diff --git a/arch/um/include/shared/sysdep-ia64/syscalls.h b/arch/um/include/shared/sysdep-ia64/syscalls.h new file mode 100644 index 000000000000..4a1f46ef1ebc --- /dev/null +++ b/arch/um/include/shared/sysdep-ia64/syscalls.h @@ -0,0 +1,20 @@ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_IA64_SYSCALLS_H +#define __SYSDEP_IA64_SYSCALLS_H + +#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: + */ diff --git a/arch/um/include/shared/sysdep-ppc/ptrace.h b/arch/um/include/shared/sysdep-ppc/ptrace.h new file mode 100644 index 000000000000..df2397dba3e5 --- /dev/null +++ b/arch/um/include/shared/sysdep-ppc/ptrace.h @@ -0,0 +1,103 @@ +/* + * Licensed under the GPL + */ + +#ifndef __SYS_PTRACE_PPC_H +#define __SYS_PTRACE_PPC_H + +#include "linux/types.h" + +/* the following taken from <asm-ppc/ptrace.h> */ + +#ifdef CONFIG_PPC64 +#define PPC_REG unsigned long /*long*/ +#else +#define PPC_REG unsigned long +#endif +struct sys_pt_regs_s { + PPC_REG gpr[32]; + PPC_REG nip; + PPC_REG msr; + PPC_REG orig_gpr3; /* Used for restarting system calls */ + PPC_REG ctr; + PPC_REG link; + PPC_REG xer; + PPC_REG ccr; + PPC_REG mq; /* 601 only (not used at present) */ + /* Used on APUS to hold IPL value. */ + PPC_REG trap; /* Reason for being here */ + PPC_REG dar; /* Fault registers */ + PPC_REG dsisr; + PPC_REG result; /* Result of a system call */ +}; + +#define NUM_REGS (sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG)) + +struct sys_pt_regs { + PPC_REG regs[sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG)]; +}; + +#define UM_MAX_REG (PT_FPR0) +#define UM_MAX_REG_OFFSET (UM_MAX_REG * sizeof(PPC_REG)) + +#define EMPTY_REGS { { [ 0 ... NUM_REGS - 1] = 0 } } + +#define UM_REG(r, n) ((r)->regs[n]) + +#define UM_SYSCALL_RET(r) UM_REG(r, PT_R3) +#define UM_SP(r) UM_REG(r, PT_R1) +#define UM_IP(r) UM_REG(r, PT_NIP) +#define UM_ELF_ZERO(r) UM_REG(r, PT_FPSCR) +#define UM_SYSCALL_NR(r) UM_REG(r, PT_R0) +#define UM_SYSCALL_ARG1(r) UM_REG(r, PT_ORIG_R3) +#define UM_SYSCALL_ARG2(r) UM_REG(r, PT_R4) +#define UM_SYSCALL_ARG3(r) UM_REG(r, PT_R5) +#define UM_SYSCALL_ARG4(r) UM_REG(r, PT_R6) +#define UM_SYSCALL_ARG5(r) UM_REG(r, PT_R7) +#define UM_SYSCALL_ARG6(r) UM_REG(r, PT_R8) + +#define UM_SYSCALL_NR_OFFSET (PT_R0 * sizeof(PPC_REG)) +#define UM_SYSCALL_RET_OFFSET (PT_R3 * sizeof(PPC_REG)) +#define UM_SYSCALL_ARG1_OFFSET (PT_R3 * sizeof(PPC_REG)) +#define UM_SYSCALL_ARG2_OFFSET (PT_R4 * sizeof(PPC_REG)) +#define UM_SYSCALL_ARG3_OFFSET (PT_R5 * sizeof(PPC_REG)) +#define UM_SYSCALL_ARG4_OFFSET (PT_R6 * sizeof(PPC_REG)) +#define UM_SYSCALL_ARG5_OFFSET (PT_R7 * sizeof(PPC_REG)) +#define UM_SYSCALL_ARG6_OFFSET (PT_R8 * sizeof(PPC_REG)) +#define UM_SP_OFFSET (PT_R1 * sizeof(PPC_REG)) +#define UM_IP_OFFSET (PT_NIP * sizeof(PPC_REG)) +#define UM_ELF_ZERO_OFFSET (PT_R3 * sizeof(PPC_REG)) + +#define UM_SET_SYSCALL_RETURN(_regs, result) \ +do { \ + if (result < 0) { \ + (_regs)->regs[PT_CCR] |= 0x10000000; \ + UM_SYSCALL_RET((_regs)) = -result; \ + } else { \ + UM_SYSCALL_RET((_regs)) = result; \ + } \ +} while(0) + +extern void shove_aux_table(unsigned long sp); +#define UM_FIX_EXEC_STACK(sp) shove_aux_table(sp); + +/* These aren't actually defined. The undefs are just to make sure + * everyone's clear on the concept. + */ +#undef UML_HAVE_GETREGS +#undef UML_HAVE_GETFPREGS +#undef UML_HAVE_SETREGS +#undef UML_HAVE_SETFPREGS + +#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: + */ diff --git a/arch/um/include/shared/sysdep-ppc/sigcontext.h b/arch/um/include/shared/sysdep-ppc/sigcontext.h new file mode 100644 index 000000000000..f20d965de9c7 --- /dev/null +++ b/arch/um/include/shared/sysdep-ppc/sigcontext.h @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYS_SIGCONTEXT_PPC_H +#define __SYS_SIGCONTEXT_PPC_H + +#define DSISR_WRITE 0x02000000 + +#define SC_FAULT_ADDR(sc) ({ \ + struct sigcontext *_sc = (sc); \ + long retval = -1; \ + switch (_sc->regs->trap) { \ + case 0x300: \ + /* data exception */ \ + retval = _sc->regs->dar; \ + break; \ + case 0x400: \ + /* instruction exception */ \ + retval = _sc->regs->nip; \ + break; \ + default: \ + panic("SC_FAULT_ADDR: unhandled trap type\n"); \ + } \ + retval; \ + }) + +#define SC_FAULT_WRITE(sc) ({ \ + struct sigcontext *_sc = (sc); \ + long retval = -1; \ + switch (_sc->regs->trap) { \ + case 0x300: \ + /* data exception */ \ + retval = !!(_sc->regs->dsisr & DSISR_WRITE); \ + break; \ + case 0x400: \ + /* instruction exception: not a write */ \ + retval = 0; \ + break; \ + default: \ + panic("SC_FAULT_ADDR: unhandled trap type\n"); \ + } \ + retval; \ + }) + +#define SC_IP(sc) ((sc)->regs->nip) +#define SC_SP(sc) ((sc)->regs->gpr[1]) +#define SEGV_IS_FIXABLE(sc) (1) + +#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: + */ diff --git a/arch/um/include/shared/sysdep-ppc/skas_ptrace.h b/arch/um/include/shared/sysdep-ppc/skas_ptrace.h new file mode 100644 index 000000000000..d9fbbac10de0 --- /dev/null +++ b/arch/um/include/shared/sysdep-ppc/skas_ptrace.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_PPC_SKAS_PTRACE_H +#define __SYSDEP_PPC_SKAS_PTRACE_H + +struct ptrace_faultinfo { + int is_write; + unsigned long addr; +}; + +struct ptrace_ldt { + int func; + void *ptr; + unsigned long bytecount; +}; + +#define PTRACE_LDT 54 + +#endif diff --git a/arch/um/include/shared/sysdep-ppc/syscalls.h b/arch/um/include/shared/sysdep-ppc/syscalls.h new file mode 100644 index 000000000000..679df351e19b --- /dev/null +++ b/arch/um/include/shared/sysdep-ppc/syscalls.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +typedef long syscall_handler_t(unsigned long arg1, unsigned long arg2, + unsigned long arg3, unsigned long arg4, + unsigned long arg5, unsigned long arg6); + +#define EXECUTE_SYSCALL(syscall, regs) \ + (*sys_call_table[syscall])(UM_SYSCALL_ARG1(®s), \ + UM_SYSCALL_ARG2(®s), \ + UM_SYSCALL_ARG3(®s), \ + UM_SYSCALL_ARG4(®s), \ + UM_SYSCALL_ARG5(®s), \ + UM_SYSCALL_ARG6(®s)) + +extern syscall_handler_t sys_mincore; +extern syscall_handler_t sys_madvise; + +/* old_mmap needs the correct prototype since syscall_kern.c includes + * this file. + */ +int old_mmap(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long offset); + +#define ARCH_SYSCALLS \ + [ __NR_modify_ldt ] = sys_ni_syscall, \ + [ __NR_pciconfig_read ] = sys_ni_syscall, \ + [ __NR_pciconfig_write ] = sys_ni_syscall, \ + [ __NR_pciconfig_iobase ] = sys_ni_syscall, \ + [ __NR_pivot_root ] = sys_ni_syscall, \ + [ __NR_multiplexer ] = sys_ni_syscall, \ + [ __NR_mmap ] = old_mmap, \ + [ __NR_madvise ] = sys_madvise, \ + [ __NR_mincore ] = sys_mincore, \ + [ __NR_iopl ] = (syscall_handler_t *) sys_ni_syscall, \ + [ __NR_utimes ] = (syscall_handler_t *) sys_utimes, \ + [ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64, + +#define LAST_ARCH_SYSCALL __NR_fadvise64 + +/* + * 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: + */ diff --git a/arch/um/include/shared/sysdep-x86_64/archsetjmp.h b/arch/um/include/shared/sysdep-x86_64/archsetjmp.h new file mode 100644 index 000000000000..2af8f12ca161 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/archsetjmp.h @@ -0,0 +1,24 @@ +/* + * arch/um/include/sysdep-x86_64/archsetjmp.h + */ + +#ifndef _KLIBC_ARCHSETJMP_H +#define _KLIBC_ARCHSETJMP_H + +struct __jmp_buf { + unsigned long __rbx; + unsigned long __rsp; + unsigned long __rbp; + unsigned long __r12; + unsigned long __r13; + unsigned long __r14; + unsigned long __r15; + unsigned long __rip; +}; + +typedef struct __jmp_buf jmp_buf[1]; + +#define JB_IP __rip +#define JB_SP __rsp + +#endif /* _SETJMP_H */ diff --git a/arch/um/include/shared/sysdep-x86_64/barrier.h b/arch/um/include/shared/sysdep-x86_64/barrier.h new file mode 100644 index 000000000000..7b610befdc8f --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/barrier.h @@ -0,0 +1,7 @@ +#ifndef __SYSDEP_X86_64_BARRIER_H +#define __SYSDEP_X86_64_BARRIER_H + +/* Copied from include/asm-x86_64 for use by userspace. */ +#define mb() asm volatile("mfence":::"memory") + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/checksum.h b/arch/um/include/shared/sysdep-x86_64/checksum.h new file mode 100644 index 000000000000..a5be9031ea85 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/checksum.h @@ -0,0 +1,144 @@ +/* + * Licensed under the GPL + */ + +#ifndef __UM_SYSDEP_CHECKSUM_H +#define __UM_SYSDEP_CHECKSUM_H + +#include "linux/string.h" +#include "linux/in6.h" +#include "asm/uaccess.h" + +extern __wsum csum_partial(const void *buff, int len, __wsum sum); + +/* + * 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 + * access_ok(). + */ + +static __inline__ +__wsum csum_partial_copy_nocheck(const void *src, void *dst, + int len, __wsum sum) +{ + memcpy(dst, src, len); + return(csum_partial(dst, len, sum)); +} + +static __inline__ +__wsum csum_partial_copy_from_user(const void __user *src, + void *dst, int len, __wsum sum, + int *err_ptr) +{ + if (copy_from_user(dst, src, len)) { + *err_ptr = -EFAULT; + return (__force __wsum)-1; + } + return csum_partial(dst, len, sum); +} + +/** + * csum_fold - Fold and invert a 32bit checksum. + * sum: 32bit unfolded sum + * + * Fold a 32bit running checksum to 16bit and invert it. This is usually + * the last step before putting a checksum into a packet. + * Make sure not to mix with 64bit checksums. + */ +static inline __sum16 csum_fold(__wsum sum) +{ + __asm__( + " addl %1,%0\n" + " adcl $0xffff,%0" + : "=r" (sum) + : "r" ((__force u32)sum << 16), + "0" ((__force u32)sum & 0xffff0000) + ); + return (__force __sum16)(~(__force u32)sum >> 16); +} + +/** + * csum_tcpup_nofold - Compute an IPv4 pseudo header checksum. + * @saddr: source address + * @daddr: destination address + * @len: length of packet + * @proto: ip protocol of packet + * @sum: initial sum to be added in (32bit unfolded) + * + * Returns the pseudo header checksum the input data. Result is + * 32bit unfolded. + */ +static inline __wsum +csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, + unsigned short proto, __wsum 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" ((len + proto) << 8), "0" (sum)); + return sum; +} + +/* + * computes the checksum of the TCP/UDP pseudo-header + * returns a 16-bit checksum, already complemented + */ +static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr, + unsigned short len, + unsigned short proto, + __wsum sum) +{ + return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum)); +} + +/** + * ip_fast_csum - Compute the IPv4 header checksum efficiently. + * iph: ipv4 header + * ihl: length of header / 4 + */ +static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl) +{ + unsigned int sum; + + asm( " 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:" + /* 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) + : "memory"); + return (__force __sum16)sum; +} + +static inline unsigned add32_with_carry(unsigned a, unsigned b) +{ + asm("addl %2,%0\n\t" + "adcl $0,%0" + : "=r" (a) + : "0" (a), "r" (b)); + return a; +} + +extern __sum16 ip_compute_csum(const void *buff, int len); + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/faultinfo.h b/arch/um/include/shared/sysdep-x86_64/faultinfo.h new file mode 100644 index 000000000000..cb917b0d5660 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/faultinfo.h @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2004 Fujitsu Siemens Computers GmbH + * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com> + * Licensed under the GPL + */ + +#ifndef __FAULTINFO_X86_64_H +#define __FAULTINFO_X86_64_H + +/* this structure contains the full arch-specific faultinfo + * from the traps. + * On i386, ptrace_faultinfo unfortunately doesn't provide + * all the info, since trap_no is missing. + * All common elements are defined at the same position in + * both structures, thus making it easy to copy the + * contents without knowledge about the structure elements. + */ +struct faultinfo { + int error_code; /* in ptrace_faultinfo misleadingly called is_write */ + unsigned long cr2; /* in ptrace_faultinfo called addr */ + int trap_no; /* missing in ptrace_faultinfo */ +}; + +#define FAULT_WRITE(fi) ((fi).error_code & 2) +#define FAULT_ADDRESS(fi) ((fi).cr2) + +#define PTRACE_FULL_FAULTINFO 1 + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/kernel-offsets.h b/arch/um/include/shared/sysdep-x86_64/kernel-offsets.h new file mode 100644 index 000000000000..a307237b7964 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/kernel-offsets.h @@ -0,0 +1,23 @@ +#include <linux/stddef.h> +#include <linux/sched.h> +#include <linux/time.h> +#include <linux/elf.h> +#include <linux/crypto.h> +#include <asm/page.h> +#include <asm/mman.h> + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define DEFINE_STR1(x) #x +#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " DEFINE_STR1(val) " " #val: : ) + +#define BLANK() asm volatile("\n->" : : ) + +#define OFFSET(sym, str, mem) \ + DEFINE(sym, offsetof(struct str, mem)); + +void foo(void) +{ +#include <common-offsets.h> +} diff --git a/arch/um/include/shared/sysdep-x86_64/ptrace.h b/arch/um/include/shared/sysdep-x86_64/ptrace.h new file mode 100644 index 000000000000..9ea44d111f33 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/ptrace.h @@ -0,0 +1,240 @@ +/* + * Copyright 2003 PathScale, Inc. + * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * + * Licensed under the GPL + */ + +#ifndef __SYSDEP_X86_64_PTRACE_H +#define __SYSDEP_X86_64_PTRACE_H + +#include "uml-config.h" +#include "user_constants.h" +#include "sysdep/faultinfo.h" + +#define MAX_REG_OFFSET (UM_FRAME_SIZE) +#define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long)) + +#include "skas_ptregs.h" + +#define REGS_IP(r) ((r)[HOST_IP]) +#define REGS_SP(r) ((r)[HOST_SP]) + +#define REGS_RBX(r) ((r)[HOST_RBX]) +#define REGS_RCX(r) ((r)[HOST_RCX]) +#define REGS_RDX(r) ((r)[HOST_RDX]) +#define REGS_RSI(r) ((r)[HOST_RSI]) +#define REGS_RDI(r) ((r)[HOST_RDI]) +#define REGS_RBP(r) ((r)[HOST_RBP]) +#define REGS_RAX(r) ((r)[HOST_RAX]) +#define REGS_R8(r) ((r)[HOST_R8]) +#define REGS_R9(r) ((r)[HOST_R9]) +#define REGS_R10(r) ((r)[HOST_R10]) +#define REGS_R11(r) ((r)[HOST_R11]) +#define REGS_R12(r) ((r)[HOST_R12]) +#define REGS_R13(r) ((r)[HOST_R13]) +#define REGS_R14(r) ((r)[HOST_R14]) +#define REGS_R15(r) ((r)[HOST_R15]) +#define REGS_CS(r) ((r)[HOST_CS]) +#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS]) +#define REGS_SS(r) ((r)[HOST_SS]) + +#define HOST_FS_BASE 21 +#define HOST_GS_BASE 22 +#define HOST_DS 23 +#define HOST_ES 24 +#define HOST_FS 25 +#define HOST_GS 26 + +/* Also defined in asm/ptrace-x86_64.h, but not in libc headers. So, these + * are already defined for kernel code, but not for userspace code. + */ +#ifndef FS_BASE +/* These aren't defined in ptrace.h, but exist in struct user_regs_struct, + * which is what x86_64 ptrace actually uses. + */ +#define FS_BASE (HOST_FS_BASE * sizeof(long)) +#define GS_BASE (HOST_GS_BASE * sizeof(long)) +#define DS (HOST_DS * sizeof(long)) +#define ES (HOST_ES * sizeof(long)) +#define FS (HOST_FS * sizeof(long)) +#define GS (HOST_GS * sizeof(long)) +#endif + +#define REGS_FS_BASE(r) ((r)[HOST_FS_BASE]) +#define REGS_GS_BASE(r) ((r)[HOST_GS_BASE]) +#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_ORIG_RAX(r) ((r)[HOST_ORIG_RAX]) + +#define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(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) + +#define REGS_TRAP(r) ((r)->trap_type) + +#define REGS_ERR(r) ((r)->fault_type) + +struct uml_pt_regs { + unsigned long gp[MAX_REG_NR]; + struct faultinfo faultinfo; + long syscall; + int is_user; +}; + +#define EMPTY_UML_PT_REGS { } + +#define UPT_RBX(r) REGS_RBX((r)->gp) +#define UPT_RCX(r) REGS_RCX((r)->gp) +#define UPT_RDX(r) REGS_RDX((r)->gp) +#define UPT_RSI(r) REGS_RSI((r)->gp) +#define UPT_RDI(r) REGS_RDI((r)->gp) +#define UPT_RBP(r) REGS_RBP((r)->gp) +#define UPT_RAX(r) REGS_RAX((r)->gp) +#define UPT_R8(r) REGS_R8((r)->gp) +#define UPT_R9(r) REGS_R9((r)->gp) +#define UPT_R10(r) REGS_R10((r)->gp) +#define UPT_R11(r) REGS_R11((r)->gp) +#define UPT_R12(r) REGS_R12((r)->gp) +#define UPT_R13(r) REGS_R13((r)->gp) +#define UPT_R14(r) REGS_R14((r)->gp) +#define UPT_R15(r) REGS_R15((r)->gp) +#define UPT_CS(r) REGS_CS((r)->gp) +#define UPT_FS_BASE(r) REGS_FS_BASE((r)->gp) +#define UPT_FS(r) REGS_FS((r)->gp) +#define UPT_GS_BASE(r) REGS_GS_BASE((r)->gp) +#define UPT_GS(r) REGS_GS((r)->gp) +#define UPT_DS(r) REGS_DS((r)->gp) +#define UPT_ES(r) REGS_ES((r)->gp) +#define UPT_CS(r) REGS_CS((r)->gp) +#define UPT_SS(r) REGS_SS((r)->gp) +#define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->gp) + +#define UPT_IP(r) REGS_IP((r)->gp) +#define UPT_SP(r) REGS_SP((r)->gp) + +#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp) +#define UPT_SYSCALL_NR(r) ((r)->syscall) +#define UPT_SYSCALL_RET(r) UPT_RAX(r) + +extern int user_context(unsigned long sp); + +#define UPT_IS_USER(r) ((r)->is_user) + +#define UPT_SYSCALL_ARG1(r) UPT_RDI(r) +#define UPT_SYSCALL_ARG2(r) UPT_RSI(r) +#define UPT_SYSCALL_ARG3(r) UPT_RDX(r) +#define UPT_SYSCALL_ARG4(r) UPT_R10(r) +#define UPT_SYSCALL_ARG5(r) UPT_R8(r) +#define UPT_SYSCALL_ARG6(r) UPT_R9(r) + +struct syscall_args { + unsigned long args[6]; +}; + +#define SYSCALL_ARGS(r) ((struct syscall_args) \ + { .args = { UPT_SYSCALL_ARG1(r), \ + UPT_SYSCALL_ARG2(r), \ + UPT_SYSCALL_ARG3(r), \ + UPT_SYSCALL_ARG4(r), \ + UPT_SYSCALL_ARG5(r), \ + UPT_SYSCALL_ARG6(r) } } ) + +#define UPT_REG(regs, reg) \ + ({ unsigned long val; \ + switch(reg){ \ + case R8: val = UPT_R8(regs); break; \ + case R9: val = UPT_R9(regs); break; \ + case R10: val = UPT_R10(regs); break; \ + case R11: val = UPT_R11(regs); break; \ + case R12: val = UPT_R12(regs); break; \ + case R13: val = UPT_R13(regs); break; \ + case R14: val = UPT_R14(regs); break; \ + case R15: val = UPT_R15(regs); break; \ + case RIP: val = UPT_IP(regs); break; \ + case RSP: val = UPT_SP(regs); break; \ + case RAX: val = UPT_RAX(regs); break; \ + case RBX: val = UPT_RBX(regs); break; \ + case RCX: val = UPT_RCX(regs); break; \ + case RDX: val = UPT_RDX(regs); break; \ + case RSI: val = UPT_RSI(regs); break; \ + case RDI: val = UPT_RDI(regs); break; \ + case RBP: val = UPT_RBP(regs); break; \ + case ORIG_RAX: val = UPT_ORIG_RAX(regs); break; \ + case CS: val = UPT_CS(regs); break; \ + case SS: val = UPT_SS(regs); break; \ + case FS_BASE: val = UPT_FS_BASE(regs); break; \ + case GS_BASE: val = UPT_GS_BASE(regs); break; \ + case DS: val = UPT_DS(regs); break; \ + case ES: val = UPT_ES(regs); break; \ + case FS : val = UPT_FS (regs); break; \ + case GS: val = UPT_GS(regs); break; \ + case EFLAGS: val = UPT_EFLAGS(regs); break; \ + default : \ + panic("Bad register in UPT_REG : %d\n", reg); \ + val = -1; \ + } \ + val; \ + }) + + +#define UPT_SET(regs, reg, val) \ + ({ unsigned long __upt_val = val; \ + switch(reg){ \ + case R8: UPT_R8(regs) = __upt_val; break; \ + case R9: UPT_R9(regs) = __upt_val; break; \ + case R10: UPT_R10(regs) = __upt_val; break; \ + case R11: UPT_R11(regs) = __upt_val; break; \ + case R12: UPT_R12(regs) = __upt_val; break; \ + case R13: UPT_R13(regs) = __upt_val; break; \ + case R14: UPT_R14(regs) = __upt_val; break; \ + case R15: UPT_R15(regs) = __upt_val; break; \ + case RIP: UPT_IP(regs) = __upt_val; break; \ + case RSP: UPT_SP(regs) = __upt_val; break; \ + case RAX: UPT_RAX(regs) = __upt_val; break; \ + case RBX: UPT_RBX(regs) = __upt_val; break; \ + case RCX: UPT_RCX(regs) = __upt_val; break; \ + case RDX: UPT_RDX(regs) = __upt_val; break; \ + case RSI: UPT_RSI(regs) = __upt_val; break; \ + case RDI: UPT_RDI(regs) = __upt_val; break; \ + case RBP: UPT_RBP(regs) = __upt_val; break; \ + case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \ + case CS: UPT_CS(regs) = __upt_val; break; \ + case SS: UPT_SS(regs) = __upt_val; break; \ + case FS_BASE: UPT_FS_BASE(regs) = __upt_val; break; \ + case GS_BASE: UPT_GS_BASE(regs) = __upt_val; break; \ + case DS: UPT_DS(regs) = __upt_val; break; \ + case ES: UPT_ES(regs) = __upt_val; break; \ + case FS: UPT_FS(regs) = __upt_val; break; \ + case GS: UPT_GS(regs) = __upt_val; break; \ + case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \ + default : \ + panic("Bad register in UPT_SET : %d\n", reg); \ + break; \ + } \ + __upt_val; \ + }) + +#define UPT_SET_SYSCALL_RETURN(r, res) \ + REGS_SET_SYSCALL_RETURN((r)->regs, (res)) + +#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp) + +#define UPT_SEGV_IS_FIXABLE(r) REGS_SEGV_IS_FIXABLE(&r->skas) + +#define UPT_FAULTINFO(r) (&(r)->faultinfo) + +static inline void arch_init_registers(int pid) +{ +} + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/ptrace_user.h b/arch/um/include/shared/sysdep-x86_64/ptrace_user.h new file mode 100644 index 000000000000..4dbccdb58f48 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/ptrace_user.h @@ -0,0 +1,77 @@ +/* + * Copyright 2003 PathScale, Inc. + * + * Licensed under the GPL + */ + +#ifndef __SYSDEP_X86_64_PTRACE_USER_H__ +#define __SYSDEP_X86_64_PTRACE_USER_H__ + +#define __FRAME_OFFSETS +#include <sys/ptrace.h> +#include <linux/ptrace.h> +#include <asm/ptrace.h> +#undef __FRAME_OFFSETS +#include "user_constants.h" + +#define PT_INDEX(off) ((off) / sizeof(unsigned long)) + +#define PT_SYSCALL_NR(regs) ((regs)[PT_INDEX(ORIG_RAX)]) +#define PT_SYSCALL_NR_OFFSET (ORIG_RAX) + +#define PT_SYSCALL_ARG1(regs) (((unsigned long *) (regs))[PT_INDEX(RDI)]) +#define PT_SYSCALL_ARG1_OFFSET (RDI) + +#define PT_SYSCALL_ARG2(regs) (((unsigned long *) (regs))[PT_INDEX(RSI)]) +#define PT_SYSCALL_ARG2_OFFSET (RSI) + +#define PT_SYSCALL_ARG3(regs) (((unsigned long *) (regs))[PT_INDEX(RDX)]) +#define PT_SYSCALL_ARG3_OFFSET (RDX) + +#define PT_SYSCALL_ARG4(regs) (((unsigned long *) (regs))[PT_INDEX(RCX)]) +#define PT_SYSCALL_ARG4_OFFSET (RCX) + +#define PT_SYSCALL_ARG5(regs) (((unsigned long *) (regs))[PT_INDEX(R8)]) +#define PT_SYSCALL_ARG5_OFFSET (R8) + +#define PT_SYSCALL_ARG6(regs) (((unsigned long *) (regs))[PT_INDEX(R9)]) +#define PT_SYSCALL_ARG6_OFFSET (R9) + +#define PT_SYSCALL_RET_OFFSET (RAX) + +#define PT_IP_OFFSET (RIP) +#define PT_IP(regs) ((regs)[PT_INDEX(RIP)]) + +#define PT_SP_OFFSET (RSP) +#define PT_SP(regs) ((regs)[PT_INDEX(RSP)]) + +#define PT_ORIG_RAX_OFFSET (ORIG_RAX) +#define PT_ORIG_RAX(regs) ((regs)[PT_INDEX(ORIG_RAX)]) + +/* + * x86_64 FC3 doesn't define this in /usr/include/linux/ptrace.h even though + * it's defined in the kernel's include/linux/ptrace.h. Additionally, use the + * 2.4 name and value for 2.4 host compatibility. + */ +#ifndef PTRACE_OLDSETOPTIONS +#define PTRACE_OLDSETOPTIONS 21 +#endif + +/* + * These are before the system call, so the system call number is RAX + * rather than ORIG_RAX, and arg4 is R10 rather than RCX + */ +#define REGS_SYSCALL_NR PT_INDEX(RAX) +#define REGS_SYSCALL_ARG1 PT_INDEX(RDI) +#define REGS_SYSCALL_ARG2 PT_INDEX(RSI) +#define REGS_SYSCALL_ARG3 PT_INDEX(RDX) +#define REGS_SYSCALL_ARG4 PT_INDEX(R10) +#define REGS_SYSCALL_ARG5 PT_INDEX(R8) +#define REGS_SYSCALL_ARG6 PT_INDEX(R9) + +#define REGS_IP_INDEX PT_INDEX(RIP) +#define REGS_SP_INDEX PT_INDEX(RSP) + +#define FP_SIZE (HOST_FP_SIZE) + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/sc.h b/arch/um/include/shared/sysdep-x86_64/sc.h new file mode 100644 index 000000000000..8aee45b07434 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/sc.h @@ -0,0 +1,45 @@ +#ifndef __SYSDEP_X86_64_SC_H +#define __SYSDEP_X86_64_SC_H + +/* Copyright (C) 2003 - 2004 PathScale, Inc + * Released under the GPL + */ + +#include <user_constants.h> + +#define SC_OFFSET(sc, field) \ + *((unsigned long *) &(((char *) (sc))[HOST_##field])) + +#define SC_RBX(sc) SC_OFFSET(sc, SC_RBX) +#define SC_RCX(sc) SC_OFFSET(sc, SC_RCX) +#define SC_RDX(sc) SC_OFFSET(sc, SC_RDX) +#define SC_RSI(sc) SC_OFFSET(sc, SC_RSI) +#define SC_RDI(sc) SC_OFFSET(sc, SC_RDI) +#define SC_RBP(sc) SC_OFFSET(sc, SC_RBP) +#define SC_RAX(sc) SC_OFFSET(sc, SC_RAX) +#define SC_R8(sc) SC_OFFSET(sc, SC_R8) +#define SC_R9(sc) SC_OFFSET(sc, SC_R9) +#define SC_R10(sc) SC_OFFSET(sc, SC_R10) +#define SC_R11(sc) SC_OFFSET(sc, SC_R11) +#define SC_R12(sc) SC_OFFSET(sc, SC_R12) +#define SC_R13(sc) SC_OFFSET(sc, SC_R13) +#define SC_R14(sc) SC_OFFSET(sc, SC_R14) +#define SC_R15(sc) SC_OFFSET(sc, SC_R15) +#define SC_IP(sc) SC_OFFSET(sc, SC_IP) +#define SC_SP(sc) SC_OFFSET(sc, SC_SP) +#define SC_CR2(sc) SC_OFFSET(sc, SC_CR2) +#define SC_ERR(sc) SC_OFFSET(sc, SC_ERR) +#define SC_TRAPNO(sc) SC_OFFSET(sc, SC_TRAPNO) +#define SC_CS(sc) SC_OFFSET(sc, SC_CS) +#define SC_FS(sc) SC_OFFSET(sc, SC_FS) +#define SC_GS(sc) SC_OFFSET(sc, SC_GS) +#define SC_EFLAGS(sc) SC_OFFSET(sc, SC_EFLAGS) +#define SC_SIGMASK(sc) SC_OFFSET(sc, SC_SIGMASK) +#define SC_SS(sc) SC_OFFSET(sc, SC_SS) +#if 0 +#define SC_ORIG_RAX(sc) SC_OFFSET(sc, SC_ORIG_RAX) +#define SC_DS(sc) SC_OFFSET(sc, SC_DS) +#define SC_ES(sc) SC_OFFSET(sc, SC_ES) +#endif + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/sigcontext.h b/arch/um/include/shared/sysdep-x86_64/sigcontext.h new file mode 100644 index 000000000000..0155133b1458 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/sigcontext.h @@ -0,0 +1,27 @@ +/* + * Copyright 2003 PathScale, Inc. + * + * Licensed under the GPL + */ + +#ifndef __SYSDEP_X86_64_SIGCONTEXT_H +#define __SYSDEP_X86_64_SIGCONTEXT_H + +#include <sysdep/sc.h> + +#define IP_RESTART_SYSCALL(ip) ((ip) -= 2) + +#define GET_FAULTINFO_FROM_SC(fi, sc) \ + { \ + (fi).cr2 = SC_CR2(sc); \ + (fi).error_code = SC_ERR(sc); \ + (fi).trap_no = SC_TRAPNO(sc); \ + } + +/* This is Page Fault */ +#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14) + +/* No broken SKAS API, which doesn't pass trap_no, here. */ +#define SEGV_MAYBE_FIXABLE(fi) 0 + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/skas_ptrace.h b/arch/um/include/shared/sysdep-x86_64/skas_ptrace.h new file mode 100644 index 000000000000..95db4be786e4 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/skas_ptrace.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_X86_64_SKAS_PTRACE_H +#define __SYSDEP_X86_64_SKAS_PTRACE_H + +struct ptrace_faultinfo { + int is_write; + unsigned long addr; +}; + +struct ptrace_ldt { + int func; + void *ptr; + unsigned long bytecount; +}; + +#define PTRACE_LDT 54 + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/stub.h b/arch/um/include/shared/sysdep-x86_64/stub.h new file mode 100644 index 000000000000..655f9c2de3ac --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/stub.h @@ -0,0 +1,108 @@ +/* + * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_STUB_H +#define __SYSDEP_STUB_H + +#include <sys/mman.h> +#include <asm/unistd.h> +#include <sysdep/ptrace_user.h> +#include "as-layout.h" +#include "stub-data.h" +#include "kern_constants.h" +#include "uml-config.h" + +extern void stub_segv_handler(int sig); +extern void stub_clone_handler(void); + +#define STUB_SYSCALL_RET PT_INDEX(RAX) +#define STUB_MMAP_NR __NR_mmap +#define MMAP_OFFSET(o) (o) + +#define __syscall_clobber "r11","rcx","memory" +#define __syscall "syscall" + +static inline long stub_syscall0(long syscall) +{ + long ret; + + __asm__ volatile (__syscall + : "=a" (ret) + : "0" (syscall) : __syscall_clobber ); + + return ret; +} + +static inline long stub_syscall2(long syscall, long arg1, long arg2) +{ + long ret; + + __asm__ volatile (__syscall + : "=a" (ret) + : "0" (syscall), "D" (arg1), "S" (arg2) : __syscall_clobber ); + + return ret; +} + +static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3) +{ + long ret; + + __asm__ volatile (__syscall + : "=a" (ret) + : "0" (syscall), "D" (arg1), "S" (arg2), "d" (arg3) + : __syscall_clobber ); + + return ret; +} + +static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3, + long arg4) +{ + long ret; + + __asm__ volatile ("movq %5,%%r10 ; " __syscall + : "=a" (ret) + : "0" (syscall), "D" (arg1), "S" (arg2), "d" (arg3), + "g" (arg4) + : __syscall_clobber, "r10" ); + + return ret; +} + +static inline long stub_syscall5(long syscall, long arg1, long arg2, long arg3, + long arg4, long arg5) +{ + long ret; + + __asm__ volatile ("movq %5,%%r10 ; movq %6,%%r8 ; " __syscall + : "=a" (ret) + : "0" (syscall), "D" (arg1), "S" (arg2), "d" (arg3), + "g" (arg4), "g" (arg5) + : __syscall_clobber, "r10", "r8" ); + + return ret; +} + +static inline void trap_myself(void) +{ + __asm("int3"); +} + +static inline void remap_stack(long fd, unsigned long offset) +{ + __asm__ volatile ("movq %4,%%r10 ; movq %5,%%r8 ; " + "movq %6, %%r9; " __syscall "; movq %7, %%rbx ; " + "movq %%rax, (%%rbx)": + : "a" (STUB_MMAP_NR), "D" (STUB_DATA), + "S" (UM_KERN_PAGE_SIZE), + "d" (PROT_READ | PROT_WRITE), + "g" (MAP_FIXED | MAP_SHARED), "g" (fd), + "g" (offset), + "i" (&((struct stub_data *) STUB_DATA)->err) + : __syscall_clobber, "r10", "r8", "r9" ); +} + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/syscalls.h b/arch/um/include/shared/sysdep-x86_64/syscalls.h new file mode 100644 index 000000000000..7cfb0b085655 --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/syscalls.h @@ -0,0 +1,33 @@ +/* + * Copyright 2003 PathScale, Inc. + * + * Licensed under the GPL + */ + +#ifndef __SYSDEP_X86_64_SYSCALLS_H__ +#define __SYSDEP_X86_64_SYSCALLS_H__ + +#include <linux/msg.h> +#include <linux/shm.h> +#include <kern_constants.h> + +typedef long syscall_handler_t(void); + +extern syscall_handler_t *sys_call_table[]; + +#define EXECUTE_SYSCALL(syscall, regs) \ + (((long (*)(long, long, long, long, long, long)) \ + (*sys_call_table[syscall]))(UPT_SYSCALL_ARG1(®s->regs), \ + UPT_SYSCALL_ARG2(®s->regs), \ + UPT_SYSCALL_ARG3(®s->regs), \ + UPT_SYSCALL_ARG4(®s->regs), \ + UPT_SYSCALL_ARG5(®s->regs), \ + UPT_SYSCALL_ARG6(®s->regs))) + +extern long old_mmap(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff); +extern syscall_handler_t sys_modify_ldt; +extern syscall_handler_t sys_arch_prctl; + +#endif diff --git a/arch/um/include/shared/sysdep-x86_64/tls.h b/arch/um/include/shared/sysdep-x86_64/tls.h new file mode 100644 index 000000000000..35f19f25bd3b --- /dev/null +++ b/arch/um/include/shared/sysdep-x86_64/tls.h @@ -0,0 +1,29 @@ +#ifndef _SYSDEP_TLS_H +#define _SYSDEP_TLS_H + +# ifndef __KERNEL__ + +/* Change name to avoid conflicts with the original one from <asm/ldt.h>, which + * may be named user_desc (but in 2.4 and in header matching its API was named + * modify_ldt_ldt_s). */ + +typedef struct um_dup_user_desc { + unsigned int entry_number; + unsigned int base_addr; + unsigned int limit; + unsigned int seg_32bit:1; + unsigned int contents:2; + unsigned int read_exec_only:1; + unsigned int limit_in_pages:1; + unsigned int seg_not_present:1; + unsigned int useable:1; + unsigned int lm:1; +} user_desc_t; + +# else /* __KERNEL__ */ + +# include <asm/ldt.h> +typedef struct user_desc user_desc_t; + +# endif /* __KERNEL__ */ +#endif /* _SYSDEP_TLS_H */ diff --git a/arch/um/include/shared/sysrq.h b/arch/um/include/shared/sysrq.h new file mode 100644 index 000000000000..c8d332b56b98 --- /dev/null +++ b/arch/um/include/shared/sysrq.h @@ -0,0 +1,7 @@ +#ifndef __UM_SYSRQ_H +#define __UM_SYSRQ_H + +struct task_struct; +extern void show_trace(struct task_struct* task, unsigned long *stack); + +#endif diff --git a/arch/um/include/shared/task.h b/arch/um/include/shared/task.h new file mode 100644 index 000000000000..3fe726b3cf48 --- /dev/null +++ b/arch/um/include/shared/task.h @@ -0,0 +1,9 @@ +#ifndef __TASK_H +#define __TASK_H + +#include <kern_constants.h> + +#define TASK_REGS(task) ((struct uml_pt_regs *) &(((char *) (task))[HOST_TASK_REGS])) +#define TASK_PID(task) *((int *) &(((char *) (task))[HOST_TASK_PID])) + +#endif diff --git a/arch/um/include/shared/tlb.h b/arch/um/include/shared/tlb.h new file mode 100644 index 000000000000..ecd2265b301b --- /dev/null +++ b/arch/um/include/shared/tlb.h @@ -0,0 +1,15 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __TLB_H__ +#define __TLB_H__ + +#include "um_mmu.h" + +extern void force_flush_all(void); +extern int flush_tlb_kernel_range_common(unsigned long start, + unsigned long end); + +#endif diff --git a/arch/um/include/shared/ubd_user.h b/arch/um/include/shared/ubd_user.h new file mode 100644 index 000000000000..bb66517f0739 --- /dev/null +++ b/arch/um/include/shared/ubd_user.h @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2001 RidgeRun, Inc (glonnon@ridgerun.com) + * Licensed under the GPL + */ + +#ifndef __UM_UBD_USER_H +#define __UM_UBD_USER_H + +extern void ignore_sigwinch_sig(void); +extern int start_io_thread(unsigned long sp, int *fds_out); +extern int io_thread(void *arg); +extern int kernel_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: + */ diff --git a/arch/um/include/shared/um_malloc.h b/arch/um/include/shared/um_malloc.h new file mode 100644 index 000000000000..c554d706d106 --- /dev/null +++ b/arch/um/include/shared/um_malloc.h @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2005 Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> + * Licensed under the GPL + */ + +#ifndef __UM_MALLOC_H__ +#define __UM_MALLOC_H__ + +#include "kern_constants.h" + +extern void *uml_kmalloc(int size, int flags); +extern void kfree(const void *ptr); + +extern void *vmalloc(unsigned long size); +extern void vfree(void *ptr); + +#endif /* __UM_MALLOC_H__ */ + + diff --git a/arch/um/include/shared/um_mmu.h b/arch/um/include/shared/um_mmu.h new file mode 100644 index 000000000000..f575ff91f2a0 --- /dev/null +++ b/arch/um/include/shared/um_mmu.h @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __ARCH_UM_MMU_H +#define __ARCH_UM_MMU_H + +#include "uml-config.h" +#include "mm_id.h" +#include "asm/ldt.h" + +typedef struct mm_context { + struct mm_id id; + struct uml_ldt ldt; + struct page **stub_pages; +} mm_context_t; + +extern void __switch_mm(struct mm_id * mm_idp); + +/* Avoid tangled inclusion with asm/ldt.h */ +extern long init_new_ldt(struct mm_context *to_mm, struct mm_context *from_mm); +extern void free_ldt(struct mm_context *mm); + +#endif diff --git a/arch/um/include/shared/um_uaccess.h b/arch/um/include/shared/um_uaccess.h new file mode 100644 index 000000000000..45c04999d670 --- /dev/null +++ b/arch/um/include/shared/um_uaccess.h @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __ARCH_UM_UACCESS_H +#define __ARCH_UM_UACCESS_H + +#include <asm/elf.h> +#include <asm/fixmap.h> +#include "sysdep/archsetjmp.h" + +#define __under_task_size(addr, size) \ + (((unsigned long) (addr) < TASK_SIZE) && \ + (((unsigned long) (addr) + (size)) < TASK_SIZE)) + +#define __access_ok_vsyscall(type, addr, size) \ + ((type == VERIFY_READ) && \ + ((unsigned long) (addr) >= FIXADDR_USER_START) && \ + ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \ + ((unsigned long) (addr) + (size) >= (unsigned long)(addr))) + +#define __addr_range_nowrap(addr, size) \ + ((unsigned long) (addr) <= ((unsigned long) (addr) + (size))) + +#define access_ok(type, addr, size) \ + (__addr_range_nowrap(addr, size) && \ + (__under_task_size(addr, size) || \ + __access_ok_vsyscall(type, addr, size) || \ + segment_eq(get_fs(), KERNEL_DS))) + +extern int copy_from_user(void *to, const void __user *from, int n); +extern int copy_to_user(void __user *to, const void *from, int n); + +extern int __do_copy_to_user(void *to, const void *from, int n, + void **fault_addr, jmp_buf **fault_catcher); + +/* + * strncpy_from_user: - Copy a NUL terminated string from userspace. + * @dst: Destination address, in kernel space. This buffer must be at + * least @count bytes long. + * @src: Source address, in user space. + * @count: Maximum number of bytes to copy, including the trailing NUL. + * + * Copies a NUL-terminated string from userspace to kernel space. + * + * On success, returns the length of the string (not including the trailing + * NUL). + * + * If access to userspace fails, returns -EFAULT (some data may have been + * copied). + * + * If @count is smaller than the length of the string, copies @count bytes + * and returns @count. + */ + +extern int strncpy_from_user(char *dst, const char __user *src, int count); + +/* + * __clear_user: - Zero a block of memory in user space, with less checking. + * @to: Destination address, in user space. + * @n: Number of bytes to zero. + * + * Zero a block of memory in user space. Caller must check + * the specified block with access_ok() before calling this function. + * + * Returns number of bytes that could not be cleared. + * On success, this will be zero. + */ +extern int __clear_user(void __user *mem, int len); + +/* + * clear_user: - Zero a block of memory in user space. + * @to: Destination address, in user space. + * @n: Number of bytes to zero. + * + * Zero a block of memory in user space. + * + * Returns number of bytes that could not be cleared. + * On success, this will be zero. + */ +extern int clear_user(void __user *mem, int len); + +/* + * strlen_user: - Get the size of a string in user space. + * @str: The string to measure. + * @n: The maximum valid length + * + * Get the size of a NUL-terminated string in user space. + * + * Returns the size of the string INCLUDING the terminating NUL. + * On exception, returns 0. + * If the string is too long, returns a value greater than @n. + */ +extern int strnlen_user(const void __user *str, int len); + +#endif diff --git a/arch/um/include/shared/user.h b/arch/um/include/shared/user.h new file mode 100644 index 000000000000..1723fac6f40d --- /dev/null +++ b/arch/um/include/shared/user.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#ifndef __USER_H__ +#define __USER_H__ + +#include "uml-config.h" + +/* + * The usual definition - copied here because the kernel provides its own, + * fancier, type-safe, definition. Using that one would require + * copying too much infrastructure for my taste, so userspace files + * get less checking than kernel files. + */ +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +/* This is to get size_t */ +#ifdef __KERNEL__ +#include <linux/types.h> +#else +#include <stddef.h> +#endif + +extern void panic(const char *fmt, ...) + __attribute__ ((format (printf, 1, 2))); + +#ifdef UML_CONFIG_PRINTK +extern int printk(const char *fmt, ...) + __attribute__ ((format (printf, 1, 2))); +#else +static inline int printk(const char *fmt, ...) +{ + return 0; +} +#endif + +extern void schedule(void); +extern int in_aton(char *str); +extern int open_gdb_chan(void); +extern size_t strlcpy(char *, const char *, size_t); +extern size_t strlcat(char *, const char *, size_t); + +#endif |