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Message-ID: <20080117214041.GA6722@c2.user-mode-linux.org>
Date: Thu, 17 Jan 2008 16:40:41 -0500
From: Jeff Dike <jdike@...toit.com>
To: Andrew Morton <akpm@...l.org>
Cc: uml-devel <user-mode-linux-devel@...ts.sourceforge.net>,
LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 8/20] UML - Style fixes in arch/um/sys-x86_64
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@...ux.intel.com>
---
arch/um/include/ptrace_user.h | 11 ++------
arch/um/sys-i386/ptrace_user.c | 14 -----------
arch/um/sys-x86_64/bug.c | 3 +-
arch/um/sys-x86_64/ptrace.c | 29 ++++++++++++-----------
arch/um/sys-x86_64/ptrace_user.c | 46 ++++---------------------------------
arch/um/sys-x86_64/syscall_table.c | 31 ++++++++++++++++--------
arch/um/sys-x86_64/sysrq.c | 29 ++++++++++++-----------
arch/um/sys-x86_64/um_module.c | 8 ++++--
8 files changed, 65 insertions(+), 106 deletions(-)
Index: linux-2.6.22/arch/um/include/ptrace_user.h
===================================================================
--- linux-2.6.22.orig/arch/um/include/ptrace_user.h 2007-12-14 11:28:07.000000000 -0500
+++ linux-2.6.22/arch/um/include/ptrace_user.h 2007-12-14 11:47:57.000000000 -0500
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@...aya.com)
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@...dtoit,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
Index: linux-2.6.22/arch/um/sys-i386/ptrace_user.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-i386/ptrace_user.c 2007-12-14 11:28:07.000000000 -0500
+++ linux-2.6.22/arch/um/sys-i386/ptrace_user.c 2007-12-14 11:38:28.000000000 -0500
@@ -19,17 +19,3 @@ int ptrace_setregs(long pid, unsigned lo
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;
-}
Index: linux-2.6.22/arch/um/sys-x86_64/bug.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/bug.c 2007-12-14 11:28:07.000000000 -0500
+++ linux-2.6.22/arch/um/sys-x86_64/bug.c 2007-12-14 11:38:28.000000000 -0500
@@ -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.
*/
Index: linux-2.6.22/arch/um/sys-x86_64/ptrace.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/ptrace.c 2007-12-14 11:28:07.000000000 -0500
+++ linux-2.6.22/arch/um/sys-x86_64/ptrace.c 2007-12-14 11:47:21.000000000 -0500
@@ -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, in
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,
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,
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 _
return err;
n = copy_to_user(buf, fpregs, sizeof(fpregs));
- if(n > 0)
+ if (n > 0)
return -EFAULT;
return n;
Index: linux-2.6.22/arch/um/sys-x86_64/ptrace_user.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/ptrace_user.c 2007-12-14 11:28:07.000000000 -0500
+++ linux-2.6.22/arch/um/sys-x86_64/ptrace_user.c 2007-12-14 11:38:28.000000000 -0500
@@ -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);
+ if (ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
+ return -errno;
return(0);
}
-int ptrace_setfpregs(long pid, unsigned long *regs)
+int ptrace_setregs(long pid, unsigned long *regs_out)
{
- if (ptrace(PTRACE_SETFPREGS, pid, 0, regs) < 0)
+ if (ptrace(PTRACE_SETREGS, pid, 0, regs_out) < 0)
return -errno;
- return 0;
-}
-
-void ptrace_pokeuser(unsigned long addr, unsigned long data)
-{
- 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");
+ return(0);
}
Index: linux-2.6.22/arch/um/sys-x86_64/syscall_table.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/syscall_table.c 2007-12-14 11:28:07.000000000 -0500
+++ linux-2.6.22/arch/um/sys-x86_64/syscall_table.c 2007-12-14 11:38:28.000000000 -0500
@@ -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>
};
Index: linux-2.6.22/arch/um/sys-x86_64/sysrq.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/sysrq.c 2007-12-14 11:28:07.000000000 -0500
+++ linux-2.6.22/arch/um/sys-x86_64/sysrq.c 2007-12-14 11:47:39.000000000 -0500
@@ -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));
}
Index: linux-2.6.22/arch/um/sys-x86_64/um_module.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/um_module.c 2007-12-14 11:28:07.000000000 -0500
+++ linux-2.6.22/arch/um/sys-x86_64/um_module.c 2007-12-14 11:38:28.000000000 -0500
@@ -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.
+ */
}
--
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