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authorMaxim Kuvyrkov <maxim@codesourcery.com>2009-12-07 08:24:27 (GMT)
committerGeert Uytterhoeven <geert@linux-m68k.org>2010-02-27 17:31:19 (GMT)
commit9674cdc74d63f346870943ef966a034f8c71ee57 (patch)
treec590640335983c5b1a7f5c9589478bf90fb68d03 /arch/m68k/kernel/ptrace.c
parentf54bcdc2b81558a2b7e624cfeb4992422d9265f9 (diff)
downloadlinux-9674cdc74d63f346870943ef966a034f8c71ee57.tar.xz
m68k: Add NPTL support
This patch adds several syscalls, that provide necessary functionality to support NPTL on m68k/ColdFire. The syscalls are get_thread_area, set_thread_area, atomic_cmpxchg_32 and atomic_barrier. The cmpxchg syscall is required for ColdFire as it doesn't support 'cas' instruction. Also a ptrace call PTRACE_GET_THREAD_AREA is added to allow debugger to inspect the TLS storage. Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/kernel/ptrace.c')
-rw-r--r--arch/m68k/kernel/ptrace.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index 1fc217e..616e597 100644
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -245,6 +245,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
ret = -EFAULT;
break;
+ case PTRACE_GET_THREAD_AREA:
+ ret = put_user(task_thread_info(child)->tp_value,
+ (unsigned long __user *)data);
+ break;
+
default:
ret = ptrace_request(child, request, addr, data);
break;