8 files changed, 28 insertions, 48 deletions

diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index 9d446eff2c04..052f81a76239 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -3,7 +3,7 @@
 # see Documentation/kbuild/kconfig-language.txt.
 #
 
-config TMS320C6X
+config C6X
         def_bool y
         select CLKDEV_LOOKUP
         select GENERIC_IRQ_SHOW
@@ -20,24 +20,12 @@ config TMS320C6X
 config MMU
         def_bool n
 
-config ZONE_DMA
-        def_bool y
-
 config FPU
         def_bool n
 
-config HIGHMEM
-        def_bool n
-
-config NUMA
-        def_bool n
-
 config RWSEM_GENERIC_SPINLOCK
         def_bool y
 
-config RWSEM_XCHGADD_ALGORITHM
-        def_bool n
-
 config GENERIC_CALIBRATE_DELAY
         def_bool y
 
diff --git a/arch/c6x/include/asm/elf.h b/arch/c6x/include/asm/elf.h
index d57865ba2c44..f4552db20b4a 100644
--- a/arch/c6x/include/asm/elf.h
+++ b/arch/c6x/include/asm/elf.h
@@ -30,7 +30,19 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
  */
 #define elf_check_arch(x) ((x)->e_machine == EM_TI_C6000)
 
-#define elf_check_const_displacement(x) (1)
+#define elf_check_fdpic(x) (1)
+#define elf_check_const_displacement(x) (0)
+
+#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map, _interp_map, _dynamic_addr) \
+do {                                                            \
+        _regs->b4       = (_exec_map);                          \
+        _regs->a6       = (_interp_map);                        \
+        _regs->b6       = (_dynamic_addr);                      \
+} while (0)
+
+#define ELF_FDPIC_CORE_EFLAGS   0
+
+#define ELF_CORE_COPY_FPREGS(...) 0 /* No FPU regs to copy */
 
 /*
  * These are used to set parameters in the core dumps.
diff --git a/arch/c6x/include/asm/mmu.h b/arch/c6x/include/asm/mmu.h
index 41592bf16067..4467e770a1ce 100644
--- a/arch/c6x/include/asm/mmu.h
+++ b/arch/c6x/include/asm/mmu.h
@@ -13,6 +13,10 @@
 
 typedef struct {
         unsigned long           end_brk;
+#ifdef CONFIG_BINFMT_ELF_FDPIC
+        unsigned long   exec_fdpic_loadmap;
+        unsigned long   interp_fdpic_loadmap;
+#endif
 } mm_context_t;
 
 #endif /* _ASM_C6X_MMU_H */
diff --git a/arch/c6x/include/asm/processor.h b/arch/c6x/include/asm/processor.h
index 3ff7fab956ba..c50af7ef1c96 100644
--- a/arch/c6x/include/asm/processor.h
+++ b/arch/c6x/include/asm/processor.h
@@ -92,9 +92,6 @@ static inline void release_thread(struct task_struct *dead_task)
 {
 }
 
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk)    do { } while (0)
-
 extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
 
 #define copy_segments(tsk, mm)          do { } while (0)
diff --git a/arch/c6x/include/asm/ptrace.h b/arch/c6x/include/asm/ptrace.h
index 21e8d7931fe7..b04ff5964258 100644
--- a/arch/c6x/include/asm/ptrace.h
+++ b/arch/c6x/include/asm/ptrace.h
@@ -97,6 +97,11 @@
 #define PT_DP      PT_B14  /* Data Segment Pointer (B14) */
 #define PT_SP      PT_B15  /* Stack Pointer (B15)  */
 
+#define PTRACE_GETFDPIC         31      /* get the ELF fdpic loadmap address */
+
+#define PTRACE_GETFDPIC_EXEC    0       /* [addr] request the executable loadmap */
+#define PTRACE_GETFDPIC_INTERP  1       /* [addr] request the interpreter loadmap */
+
 #ifndef __ASSEMBLY__
 
 #ifdef _BIG_ENDIAN
diff --git a/arch/c6x/include/asm/thread_info.h b/arch/c6x/include/asm/thread_info.h
index fd99148cda9d..1710bcbb8d09 100644
--- a/arch/c6x/include/asm/thread_info.h
+++ b/arch/c6x/include/asm/thread_info.h
@@ -20,11 +20,11 @@
 #ifdef CONFIG_4KSTACKS
 #define THREAD_SIZE             4096
 #define THREAD_SHIFT            12
-#define THREAD_ORDER            0
+#define THREAD_SIZE_ORDER       0
 #else
 #define THREAD_SIZE             8192
 #define THREAD_SHIFT            13
-#define THREAD_ORDER            1
+#define THREAD_SIZE_ORDER       1
 #endif
 
 #define THREAD_START_SP         (THREAD_SIZE - 8)
@@ -80,19 +80,6 @@ struct thread_info *current_thread_info(void)
         return ti;
 }
 
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
-/* thread information allocation */
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define THREAD_FLAGS (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
-#else
-#define THREAD_FLAGS (GFP_KERNEL | __GFP_NOTRACK)
-#endif
-
-#define alloc_thread_info_node(tsk, node)       \
-        ((struct thread_info *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER))
-
-#define free_thread_info(ti)    free_pages((unsigned long) (ti), THREAD_ORDER)
 #define get_thread_info(ti)     get_task_struct((ti)->task)
 #define put_thread_info(ti)     put_task_struct((ti)->task)
 #endif /* __ASSEMBLY__ */
diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c
index 7ca8c41b03cd..45e924a636a0 100644
--- a/arch/c6x/kernel/process.c
+++ b/arch/c6x/kernel/process.c
@@ -26,22 +26,6 @@ void	(*c6x_halt)(void);
 
 extern asmlinkage void ret_from_fork(void);
 
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-
-/*
- * Initial thread structure.
- */
-union thread_union init_thread_union __init_task_data = {
-        INIT_THREAD_INFO(init_task)
-};
-
-/*
- * Initial task structure.
- */
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
-
 /*
  * power off function, if any
  */
diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c
index 3b5a05099989..cf37478c1169 100644
--- a/arch/c6x/kernel/signal.c
+++ b/arch/c6x/kernel/signal.c
@@ -69,6 +69,9 @@ asmlinkage int do_rt_sigreturn(struct pt_regs *regs)
         struct rt_sigframe __user *frame;
         sigset_t set;
 
+        /* Always make any pending restarted system calls return -EINTR */
+        current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
         /*
          * Since we stacked the signal on a dword boundary,
          * 'sp' should be dword aligned here.  If it's