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uml: style fixes in arch/um/sys-x86_64

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Style fixes in arch/um/sys-x86_64:
	updated copyrights
	CodingStyle fixes
	added severities to printks which needed them

A bunch of functions in sys-*/ptrace_user.c turn out to be unused, so they and
their declarations are gone.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike 2008-02-04 22:31:20 -08:00 committed by Linus Torvalds
parent 7281ff952c
commit 95906b24fb
8 changed files with 66 additions and 107 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/um/include/ptrace_user.h
View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
@ -10,12 +10,6 @@
extern int ptrace_getregs(long pid, unsigned long *regs_out);
extern int ptrace_setregs(long pid, unsigned long *regs_in);
extern int ptrace_getfpregs(long pid, unsigned long *regs_out);
extern int ptrace_setfpregs(long pid, unsigned long *regs);
extern void arch_enter_kernel(void *task, int pid);
extern void arch_leave_kernel(void *task, int pid);
extern void ptrace_pokeuser(unsigned long addr, unsigned long data);
/* syscall emulation path in ptrace */
@ -54,7 +48,8 @@ extern int sysemu_supported;
(((int[3][3] ) { \
{ PTRACE_SYSCALL, PTRACE_SYSCALL, PTRACE_SINGLESTEP }, \
{ PTRACE_SYSEMU, PTRACE_SYSEMU, PTRACE_SINGLESTEP }, \
{ PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, PTRACE_SYSEMU_SINGLESTEP }}) \
{ PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, \
PTRACE_SYSEMU_SINGLESTEP } }) \
[sysemu_mode][singlestep_mode])
#endif

14
arch/um/sys-i386/ptrace_user.c
View File

@ -19,17 +19,3 @@ int ptrace_setregs(long pid, unsigned long *regs)
return -errno;
return 0;
}
int ptrace_getfpregs(long pid, unsigned long *regs)
{
if (ptrace(PTRACE_GETFPREGS, pid, 0, regs) < 0)
return -errno;
return 0;
}
int ptrace_setfpregs(long pid, unsigned long *regs)
{
if (ptrace(PTRACE_SETFPREGS, pid, 0, regs) < 0)
return -errno;
return 0;
}

3
arch/um/sys-x86_64/bug.c
View File

@ -5,7 +5,8 @@
#include <linux/uaccess.h>
/* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because
/*
* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because
* that's not relevant in skas mode.
*/

29
arch/um/sys-x86_64/ptrace.c
View File

@ -5,13 +5,12 @@
* Licensed under the GPL
*/
#define __FRAME_OFFSETS
#include <asm/ptrace.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/mm.h>
#define __FRAME_OFFSETS
#include <asm/ptrace.h>
#include <asm/uaccess.h>
#include <asm/elf.h>
/*
* determines which flags the user has access to.
@ -24,12 +23,14 @@ int putreg(struct task_struct *child, int regno, unsigned long value)
unsigned long tmp;
#ifdef TIF_IA32
/* Some code in the 64bit emulation may not be 64bit clean.
Don't take any chances. */
/*
* Some code in the 64bit emulation may not be 64bit clean.
* Don't take any chances.
*/
if (test_tsk_thread_flag(child, TIF_IA32))
value &= 0xffffffff;
#endif
switch (regno){
switch (regno) {
case FS:
case GS:
case DS:
@ -66,7 +67,7 @@ int poke_user(struct task_struct *child, long addr, long data)
if (addr < MAX_REG_OFFSET)
return putreg(child, addr, data);
else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
(addr <= offsetof(struct user, u_debugreg[7]))){
(addr <= offsetof(struct user, u_debugreg[7]))) {
addr -= offsetof(struct user, u_debugreg[0]);
addr = addr >> 2;
if ((addr == 4) || (addr == 5))
@ -108,11 +109,10 @@ int peek_user(struct task_struct *child, long addr, long data)
return -EIO;
tmp = 0; /* Default return condition */
if (addr < MAX_REG_OFFSET){
if (addr < MAX_REG_OFFSET)
tmp = getreg(child, addr);
}
else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
(addr <= offsetof(struct user, u_debugreg[7]))){
(addr <= offsetof(struct user, u_debugreg[7]))) {
addr -= offsetof(struct user, u_debugreg[0]);
addr = addr >> 2;
tmp = child->thread.arch.debugregs[addr];
@ -127,8 +127,9 @@ int is_syscall(unsigned long addr)
int n;
n = copy_from_user(&instr, (void __user *) addr, sizeof(instr));
if (n){
/* access_process_vm() grants access to vsyscall and stub,
if (n) {
/*
* access_process_vm() grants access to vsyscall and stub,
* while copy_from_user doesn't. Maybe access_process_vm is
* slow, but that doesn't matter, since it will be called only
* in case of singlestepping, if copy_from_user failed.
@ -155,7 +156,7 @@ int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
return err;
n = copy_to_user(buf, fpregs, sizeof(fpregs));
if(n > 0)
if (n > 0)
return -EFAULT;
return n;

48
arch/um/sys-x86_64/ptrace_user.c
View File

@ -4,55 +4,19 @@
* Licensed under the GPL
*/
#include <stddef.h>
#include <errno.h>
#include "ptrace_user.h"
#include "user.h"
#include "kern_constants.h"
int ptrace_getregs(long pid, unsigned long *regs_out)
{
if(ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
return(-errno);
return(0);
}
int ptrace_setregs(long pid, unsigned long *regs)
{
if(ptrace(PTRACE_SETREGS, pid, 0, regs) < 0)
return(-errno);
return(0);
}
int ptrace_setfpregs(long pid, unsigned long *regs)
{
if (ptrace(PTRACE_SETFPREGS, pid, 0, regs) < 0)
if (ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
return -errno;
return 0;
return(0);
}
void ptrace_pokeuser(unsigned long addr, unsigned long data)
int ptrace_setregs(long pid, unsigned long *regs_out)
{
panic("ptrace_pokeuser");
}
#define DS 184
#define ES 192
#define __USER_DS 0x2b
void arch_enter_kernel(void *task, int pid)
{
}
void arch_leave_kernel(void *task, int pid)
{
#ifdef UM_USER_CS
if(ptrace(PTRACE_POKEUSR, pid, CS, UM_USER_CS) < 0)
printk("POKEUSR CS failed");
#endif
if(ptrace(PTRACE_POKEUSR, pid, DS, __USER_DS) < 0)
printk("POKEUSR DS failed");
if(ptrace(PTRACE_POKEUSR, pid, ES, __USER_DS) < 0)
printk("POKEUSR ES failed");
if (ptrace(PTRACE_SETREGS, pid, 0, regs_out) < 0)
return -errno;
return(0);
}

31
arch/um/sys-x86_64/syscall_table.c
View File

@ -1,5 +1,7 @@
/* System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c
* with some changes for UML. */
/*
* System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c
* with some changes for UML.
*/
#include <linux/linkage.h>
#include <linux/sys.h>
@ -8,22 +10,26 @@
#define __NO_STUBS
/* Below you can see, in terms of #define's, the differences between the x86-64
* and the UML syscall table. */
/*
* Below you can see, in terms of #define's, the differences between the x86-64
* and the UML syscall table.
*/
/* Not going to be implemented by UML, since we have no hardware. */
#define stub_iopl sys_ni_syscall
#define sys_ioperm sys_ni_syscall
/* The UML TLS problem. Note that x86_64 does not implement this, so the below
* is needed only for the ia32 compatibility. */
/*#define sys_set_thread_area sys_ni_syscall
#define sys_get_thread_area sys_ni_syscall*/
/*
* The UML TLS problem. Note that x86_64 does not implement this, so the below
* is needed only for the ia32 compatibility.
*/
/* On UML we call it this way ("old" means it's not mmap2) */
#define sys_mmap old_mmap
/* On x86-64 sys_uname is actually sys_newuname plus a compatibility trick.
* See arch/x86_64/kernel/sys_x86_64.c */
/*
* On x86-64 sys_uname is actually sys_newuname plus a compatibility trick.
* See arch/x86_64/kernel/sys_x86_64.c
*/
#define sys_uname sys_uname64
#define stub_clone sys_clone
@ -47,7 +53,10 @@ typedef void (*sys_call_ptr_t)(void);
extern void sys_ni_syscall(void);
sys_call_ptr_t sys_call_table[UM_NR_syscall_max+1] __cacheline_aligned = {
/* Smells like a like a compiler bug -- it doesn't work when the & below is removed. */
/*
* Smells like a like a compiler bug -- it doesn't work when the &
* below is removed.
*/
[0 ... UM_NR_syscall_max] = &sys_ni_syscall,
#include <asm-x86/unistd_64.h>
};

29
arch/um/sys-x86_64/sysrq.c
View File

@ -4,32 +4,33 @@
* Licensed under the GPL
*/
#include "linux/kernel.h"
#include "linux/utsname.h"
#include "linux/module.h"
#include "asm/current.h"
#include "asm/ptrace.h"
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/utsname.h>
#include <asm/current.h>
#include <asm/ptrace.h>
#include "sysrq.h"
void __show_regs(struct pt_regs * regs)
void __show_regs(struct pt_regs *regs)
{
printk("\n");
print_modules();
printk("Pid: %d, comm: %.20s %s %s\n", task_pid_nr(current),
printk(KERN_INFO "Pid: %d, comm: %.20s %s %s\n", task_pid_nr(current),
current->comm, print_tainted(), init_utsname()->release);
printk("RIP: %04lx:[<%016lx>] ", PT_REGS_CS(regs) & 0xffff,
printk(KERN_INFO "RIP: %04lx:[<%016lx>]\n", PT_REGS_CS(regs) & 0xffff,
PT_REGS_RIP(regs));
printk("\nRSP: %016lx EFLAGS: %08lx\n", PT_REGS_RSP(regs),
printk(KERN_INFO "RSP: %016lx EFLAGS: %08lx\n", PT_REGS_RSP(regs),
PT_REGS_EFLAGS(regs));
printk("RAX: %016lx RBX: %016lx RCX: %016lx\n",
printk(KERN_INFO "RAX: %016lx RBX: %016lx RCX: %016lx\n",
PT_REGS_RAX(regs), PT_REGS_RBX(regs), PT_REGS_RCX(regs));
printk("RDX: %016lx RSI: %016lx RDI: %016lx\n",
printk(KERN_INFO "RDX: %016lx RSI: %016lx RDI: %016lx\n",
PT_REGS_RDX(regs), PT_REGS_RSI(regs), PT_REGS_RDI(regs));
printk("RBP: %016lx R08: %016lx R09: %016lx\n",
printk(KERN_INFO "RBP: %016lx R08: %016lx R09: %016lx\n",
PT_REGS_RBP(regs), PT_REGS_R8(regs), PT_REGS_R9(regs));
printk("R10: %016lx R11: %016lx R12: %016lx\n",
printk(KERN_INFO "R10: %016lx R11: %016lx R12: %016lx\n",
PT_REGS_R10(regs), PT_REGS_R11(regs), PT_REGS_R12(regs));
printk("R13: %016lx R14: %016lx R15: %016lx\n",
printk(KERN_INFO "R13: %016lx R14: %016lx R15: %016lx\n",
PT_REGS_R13(regs), PT_REGS_R14(regs), PT_REGS_R15(regs));
}

8
arch/um/sys-x86_64/um_module.c
View File

@ -1,7 +1,7 @@
#include <linux/vmalloc.h>
#include <linux/moduleloader.h>
/*Copied from i386 arch/i386/kernel/module.c */
/* Copied from i386 arch/i386/kernel/module.c */
void *module_alloc(unsigned long size)
{
if (size == 0)
@ -13,7 +13,9 @@ void *module_alloc(unsigned long size)
void module_free(struct module *mod, void *module_region)
{
vfree(module_region);
/* FIXME: If module_region == mod->init_region, trim exception
table entries. */
/*
* FIXME: If module_region == mod->init_region, trim exception
* table entries.
*/
}