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authorMaxim Kuvyrkov <maxim@codesourcery.com>2009-12-07 00:24:27 -0800
committerGeert Uytterhoeven <geert@linux-m68k.org>2010-02-27 18:31:19 +0100
commit9674cdc74d63f346870943ef966a034f8c71ee57 (patch)
treec590640335983c5b1a7f5c9589478bf90fb68d03 /arch/m68k/include
parentf54bcdc2b81558a2b7e624cfeb4992422d9265f9 (diff)
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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/include')
-rw-r--r--arch/m68k/include/asm/ptrace.h2
-rw-r--r--arch/m68k/include/asm/thread_info_mm.h1
-rw-r--r--arch/m68k/include/asm/unistd.h6
3 files changed, 8 insertions, 1 deletions
diff --git a/arch/m68k/include/asm/ptrace.h b/arch/m68k/include/asm/ptrace.h
index ee4011c..21605c7 100644
--- a/arch/m68k/include/asm/ptrace.h
+++ b/arch/m68k/include/asm/ptrace.h
@@ -71,6 +71,8 @@ struct switch_stack {
#define PTRACE_GETFPREGS 14
#define PTRACE_SETFPREGS 15
+#define PTRACE_GET_THREAD_AREA 25
+
#define PTRACE_SINGLEBLOCK 33 /* resume execution until next branch */
#ifdef __KERNEL__
diff --git a/arch/m68k/include/asm/thread_info_mm.h b/arch/m68k/include/asm/thread_info_mm.h
index 167e518..67266c6 100644
--- a/arch/m68k/include/asm/thread_info_mm.h
+++ b/arch/m68k/include/asm/thread_info_mm.h
@@ -16,6 +16,7 @@ struct thread_info {
struct exec_domain *exec_domain; /* execution domain */
int preempt_count; /* 0 => preemptable, <0 => BUG */
__u32 cpu; /* should always be 0 on m68k */
+ unsigned long tp_value; /* thread pointer */
struct restart_block restart_block;
};
#endif /* __ASSEMBLY__ */
diff --git a/arch/m68k/include/asm/unistd.h b/arch/m68k/include/asm/unistd.h
index 48b87f5..d72a71d 100644
--- a/arch/m68k/include/asm/unistd.h
+++ b/arch/m68k/include/asm/unistd.h
@@ -336,10 +336,14 @@
#define __NR_pwritev 330
#define __NR_rt_tgsigqueueinfo 331
#define __NR_perf_event_open 332
+#define __NR_get_thread_area 333
+#define __NR_set_thread_area 334
+#define __NR_atomic_cmpxchg_32 335
+#define __NR_atomic_barrier 336
#ifdef __KERNEL__
-#define NR_syscalls 333
+#define NR_syscalls 337
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR