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Diffstat (limited to 'arch/um/sys-i386/ptrace.c')
-rw-r--r--arch/um/sys-i386/ptrace.c73
1 files changed, 48 insertions, 25 deletions
diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c
index cb899dd1c6b..659011df1e9 100644
--- a/arch/um/sys-i386/ptrace.c
+++ b/arch/um/sys-i386/ptrace.c
@@ -6,6 +6,7 @@
#include "linux/mm.h"
#include "linux/sched.h"
#include "asm/uaccess.h"
+#include "skas.h"
extern int arch_switch_tls(struct task_struct *from, struct task_struct *to);
@@ -144,48 +145,64 @@ int peek_user(struct task_struct *child, long addr, long data)
return put_user(tmp, (unsigned long __user *) data);
}
-static inline int convert_fxsr_to_user(struct _fpstate __user *buf,
- struct pt_regs *regs)
+int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
{
- return 0;
-}
+ int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
+ long fpregs[HOST_FP_SIZE];
-static inline int convert_fxsr_from_user(struct pt_regs *regs,
- struct _fpstate __user *buf)
-{
- return 0;
+ BUG_ON(sizeof(*buf) != sizeof(fpregs));
+ err = save_fp_registers(userspace_pid[cpu], fpregs);
+ if (err)
+ return err;
+
+ n = copy_to_user((void *) buf, fpregs, sizeof(fpregs));
+ if(n > 0)
+ return -EFAULT;
+
+ return n;
}
-int get_fpregs(unsigned long buf, struct task_struct *child)
+int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
{
- int err;
+ int n, cpu = ((struct thread_info *) child->stack)->cpu;
+ long fpregs[HOST_FP_SIZE];
- err = convert_fxsr_to_user((struct _fpstate __user *) buf,
- &child->thread.regs);
- if (err)
+ BUG_ON(sizeof(*buf) != sizeof(fpregs));
+ n = copy_from_user(fpregs, (void *) buf, sizeof(fpregs));
+ if (n > 0)
return -EFAULT;
- return 0;
+
+ return restore_fp_registers(userspace_pid[cpu], fpregs);
}
-int set_fpregs(unsigned long buf, struct task_struct *child)
+int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
{
- int err;
+ int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
+ long fpregs[HOST_XFP_SIZE];
- err = convert_fxsr_from_user(&child->thread.regs,
- (struct _fpstate __user *) buf);
+ BUG_ON(sizeof(*buf) != sizeof(fpregs));
+ err = save_fpx_registers(userspace_pid[cpu], fpregs);
if (err)
+ return err;
+
+ n = copy_to_user((void *) buf, fpregs, sizeof(fpregs));
+ if(n > 0)
return -EFAULT;
- return 0;
-}
-int get_fpxregs(unsigned long buf, struct task_struct *tsk)
-{
- return 0;
+ return n;
}
-int set_fpxregs(unsigned long buf, struct task_struct *tsk)
+int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
{
- return 0;
+ int n, cpu = ((struct thread_info *) child->stack)->cpu;
+ long fpregs[HOST_XFP_SIZE];
+
+ BUG_ON(sizeof(*buf) != sizeof(fpregs));
+ n = copy_from_user(fpregs, (void *) buf, sizeof(fpregs));
+ if (n > 0)
+ return -EFAULT;
+
+ return restore_fpx_registers(userspace_pid[cpu], fpregs);
}
#ifdef notdef
@@ -209,3 +226,9 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu )
{
return 1;
}
+
+long subarch_ptrace(struct task_struct *child, long request, long addr,
+ long data)
+{
+ return -EIO;
+}