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uml: tidy ptrace interface

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Tidy the ptrace interface code.  Removed a bunch of unused macros.
Started converting register sets from arrays of longs to structures.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: WANG Cong <xiyou.wangcong@gmail.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
2008-05-12 14:01:50 -07:00
committed by Linus Torvalds
parent 46d7b522eb
commit 47906dd9e6
6 changed files with 23 additions and 62 deletions
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30
arch/um/sys-i386/ptrace.c
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@@ -148,14 +148,13 @@ int peek_user(struct task_struct *child, long addr, long data)
int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
{
int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
long fpregs[HOST_FP_SIZE];
struct user_i387_struct fpregs;
BUG_ON(sizeof(*buf) != sizeof(fpregs));
err = save_fp_registers(userspace_pid[cpu], fpregs);
err = save_fp_registers(userspace_pid[cpu], (unsigned long *) &fpregs);
if (err)
return err;
n = copy_to_user(buf, fpregs, sizeof(fpregs));
n = copy_to_user(buf, &fpregs, sizeof(fpregs));
if(n > 0)
return -EFAULT;
@@ -165,27 +164,26 @@ int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
{
int n, cpu = ((struct thread_info *) child->stack)->cpu;
long fpregs[HOST_FP_SIZE];
struct user_i387_struct fpregs;
BUG_ON(sizeof(*buf) != sizeof(fpregs));
n = copy_from_user(fpregs, buf, sizeof(fpregs));
n = copy_from_user(&fpregs, buf, sizeof(fpregs));
if (n > 0)
return -EFAULT;
return restore_fp_registers(userspace_pid[cpu], fpregs);
return restore_fp_registers(userspace_pid[cpu],
(unsigned long *) &fpregs);
}
int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
{
int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
long fpregs[HOST_XFP_SIZE];
struct user_fxsr_struct fpregs;
BUG_ON(sizeof(*buf) != sizeof(fpregs));
err = save_fpx_registers(userspace_pid[cpu], fpregs);
err = save_fpx_registers(userspace_pid[cpu], (unsigned long *) &fpregs);
if (err)
return err;
n = copy_to_user(buf, fpregs, sizeof(fpregs));
n = copy_to_user(buf, &fpregs, sizeof(fpregs));
if(n > 0)
return -EFAULT;
@@ -195,14 +193,14 @@ int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
{
int n, cpu = ((struct thread_info *) child->stack)->cpu;
long fpregs[HOST_XFP_SIZE];
struct user_fxsr_struct fpregs;
BUG_ON(sizeof(*buf) != sizeof(fpregs));
n = copy_from_user(fpregs, buf, sizeof(fpregs));
n = copy_from_user(&fpregs, buf, sizeof(fpregs));
if (n > 0)
return -EFAULT;
return restore_fpx_registers(userspace_pid[cpu], fpregs);
return restore_fpx_registers(userspace_pid[cpu],
(unsigned long *) &fpregs);
}
long subarch_ptrace(struct task_struct *child, long request, long addr,