diff options
Diffstat (limited to 'arch/um/sys-x86_64')
| -rw-r--r-- | arch/um/sys-x86_64/ptrace.c | 53 |
1 files changed, 39 insertions, 14 deletions
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c index 1970d78aa528..b9032992a997 100644 --- a/arch/um/sys-x86_64/ptrace.c +++ b/arch/um/sys-x86_64/ptrace.c @@ -156,28 +156,53 @@ int is_syscall(unsigned long addr) return(instr == 0x050f); } -int get_fpregs(unsigned long buf, struct task_struct *child) +int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child) { - panic("get_fpregs"); - return(0); -} + int err, n, cpu = ((struct thread_info *) child->stack)->cpu; + long fpregs[HOST_FP_SIZE]; -int set_fpregs(unsigned long buf, struct task_struct *child) -{ - panic("set_fpregs"); - 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_fpxregs(unsigned long buf, struct task_struct *tsk) +int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child) { - panic("get_fpxregs"); - return(0); + int n, cpu = ((struct thread_info *) child->stack)->cpu; + long fpregs[HOST_FP_SIZE]; + + BUG_ON(sizeof(*buf) != sizeof(fpregs)); + n = copy_from_user(fpregs, (void *) buf, sizeof(fpregs)); + if (n > 0) + return -EFAULT; + + return restore_fp_registers(userspace_pid[cpu], fpregs); } -int set_fpxregs(unsigned long buf, struct task_struct *tsk) +long subarch_ptrace(struct task_struct *child, long request, long addr, + long data) { - panic("set_fxpregs"); - return(0); + int ret = -EIO; + + switch (request) { + case PTRACE_GETFPXREGS: /* Get the child FPU state. */ + ret = get_fpregs((struct user_i387_struct __user *) data, + child); + break; + case PTRACE_SETFPXREGS: /* Set the child FPU state. */ + ret = set_fpregs((struct user_i387_struct __user *) data, + child); + break; + } + + return ret; } /* |