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authorJeff Dike <jdike@addtoit.com>2007-10-16 01:27:16 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:07 -0700
commite8012b584fac3a1bb70cd896612c12086d28e9ff (patch)
tree0ec406be2ad1878b601c6e97ad6216764ddae942 /arch/um/kernel/ptrace.c
parenta5f6096c805e6d2fa03ee932f8c70af34cee41a0 (diff)
downloadop-kernel-dev-e8012b584fac3a1bb70cd896612c12086d28e9ff.zip
op-kernel-dev-e8012b584fac3a1bb70cd896612c12086d28e9ff.tar.gz
uml: ptrace floating point fixes
Handle floating point state better in ptrace. The code now correctly distinguishes between PTRACE_[GS]ETFPREGS and PTRACE_[GS]ETFPXREGS. The FPX requests get handed off to arch-specific code because that's not generic. get_fpregs, set_fpregs, set_fpregs, and set_fpxregs needed real implementations. Something here exposed a missing include in asm/page.h, which needed linux/types.h in order to get gfp_t, so that's fixed here. 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>
Diffstat (limited to 'arch/um/kernel/ptrace.c')
-rw-r--r--arch/um/kernel/ptrace.c18
1 files changed, 6 insertions, 12 deletions
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index db55a01..2511f91 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -143,22 +143,14 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
#endif
#ifdef PTRACE_GETFPREGS
case PTRACE_GETFPREGS: /* Get the child FPU state. */
- ret = get_fpregs(data, child);
+ ret = get_fpregs((struct user_i387_struct __user *) data,
+ child);
break;
#endif
#ifdef PTRACE_SETFPREGS
case PTRACE_SETFPREGS: /* Set the child FPU state. */
- ret = set_fpregs(data, child);
- break;
-#endif
-#ifdef PTRACE_GETFPXREGS
- case PTRACE_GETFPXREGS: /* Get the child FPU state. */
- ret = get_fpxregs(data, child);
- break;
-#endif
-#ifdef PTRACE_SETFPXREGS
- case PTRACE_SETFPXREGS: /* Set the child FPU state. */
- ret = set_fpxregs(data, child);
+ ret = set_fpregs((struct user_i387_struct __user *) data,
+ child);
break;
#endif
case PTRACE_GET_THREAD_AREA:
@@ -227,6 +219,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
#endif
default:
ret = ptrace_request(child, request, addr, data);
+ if (ret == -EIO)
+ ret = subarch_ptrace(child, request, addr, data);
break;
}
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