summaryrefslogtreecommitdiffstats
path: root/arch/c6x
diff options
context:
space:
mode:
Diffstat (limited to 'arch/c6x')
-rw-r--r--arch/c6x/Kconfig22
-rw-r--r--arch/c6x/include/asm/elf.h14
-rw-r--r--arch/c6x/include/asm/kvm_para.h1
-rw-r--r--arch/c6x/include/asm/mmu.h4
-rw-r--r--arch/c6x/include/asm/processor.h3
-rw-r--r--arch/c6x/include/asm/ptrace.h5
-rw-r--r--arch/c6x/include/asm/thread_info.h17
-rw-r--r--arch/c6x/kernel/process.c16
-rw-r--r--arch/c6x/kernel/signal.c48
9 files changed, 38 insertions, 92 deletions
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index 1c3ccd416d5..052f81a7623 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
@@ -15,40 +15,23 @@ config TMS320C6X
select IRQ_DOMAIN
select OF
select OF_EARLY_FLATTREE
+ select GENERIC_CLOCKEVENTS
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
config GENERIC_HWEIGHT
def_bool y
-config GENERIC_CLOCKEVENTS
- def_bool y
-
-config GENERIC_CLOCKEVENTS_BROADCAST
- bool
-
config GENERIC_BUG
def_bool y
@@ -137,7 +120,6 @@ source "mm/Kconfig"
source "kernel/Kconfig.preempt"
source "kernel/Kconfig.hz"
-source "kernel/time/Kconfig"
endmenu
diff --git a/arch/c6x/include/asm/elf.h b/arch/c6x/include/asm/elf.h
index d57865ba2c4..f4552db20b4 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/kvm_para.h b/arch/c6x/include/asm/kvm_para.h
new file mode 100644
index 00000000000..14fab8f0b95
--- /dev/null
+++ b/arch/c6x/include/asm/kvm_para.h
@@ -0,0 +1 @@
+#include <asm-generic/kvm_para.h>
diff --git a/arch/c6x/include/asm/mmu.h b/arch/c6x/include/asm/mmu.h
index 41592bf1606..4467e770a1c 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 3ff7fab956b..c50af7ef1c9 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 21e8d7931fe..b04ff596425 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 fd99148cda9..1710bcbb8d0 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 7ca8c41b03c..45e924a636a 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 3b5a0509998..3d8f3c22a94 100644
--- a/arch/c6x/kernel/signal.c
+++ b/arch/c6x/kernel/signal.c
@@ -20,8 +20,6 @@
#include <asm/cacheflush.h>
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
/*
* Do a signal return, undo the signal stack.
*/
@@ -69,6 +67,9 @@ 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
@@ -84,7 +85,6 @@ asmlinkage int do_rt_sigreturn(struct pt_regs *regs)
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
- sigdelsetmask(&set, ~_BLOCKABLE);
set_current_blocked(&set);
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
@@ -245,10 +245,9 @@ do_restart:
/*
* handle the actual delivery of a signal to userspace
*/
-static int handle_signal(int sig,
+static void handle_signal(int sig,
siginfo_t *info, struct k_sigaction *ka,
- sigset_t *oldset, struct pt_regs *regs,
- int syscall)
+ struct pt_regs *regs, int syscall)
{
int ret;
@@ -275,11 +274,9 @@ static int handle_signal(int sig,
}
/* Set up the stack frame */
- ret = setup_rt_frame(sig, ka, info, oldset, regs);
- if (ret == 0)
- block_sigmask(ka, sig);
-
- return ret;
+ if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0)
+ return;
+ signal_delivered(sig, info, ka, regs, 0);
}
/*
@@ -289,7 +286,6 @@ static void do_signal(struct pt_regs *regs, int syscall)
{
struct k_sigaction ka;
siginfo_t info;
- sigset_t *oldset;
int signr;
/* we want the common case to go fast, which is why we may in certain
@@ -297,25 +293,9 @@ static void do_signal(struct pt_regs *regs, int syscall)
if (!user_mode(regs))
return;
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
- oldset = &current->saved_sigmask;
- else
- oldset = &current->blocked;
-
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
- if (handle_signal(signr, &info, &ka, oldset,
- regs, syscall) == 0) {
- /* a signal was successfully delivered; the saved
- * sigmask will have been stored in the signal frame,
- * and will be restored by sigreturn, so we can simply
- * clear the TIF_RESTORE_SIGMASK flag */
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
- clear_thread_flag(TIF_RESTORE_SIGMASK);
-
- tracehook_signal_handler(signr, &info, &ka, regs, 0);
- }
-
+ handle_signal(signr, &info, &ka, regs, syscall);
return;
}
@@ -340,10 +320,7 @@ static void do_signal(struct pt_regs *regs, int syscall)
/* if there's no signal to deliver, we just put the saved sigmask
* back */
- if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
- clear_thread_flag(TIF_RESTORE_SIGMASK);
- sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
- }
+ restore_saved_sigmask();
}
/*
@@ -354,14 +331,11 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags,
int syscall)
{
/* deal with pending signal delivery */
- if (thread_info_flags & ((1 << TIF_SIGPENDING) |
- (1 << TIF_RESTORE_SIGMASK)))
+ if (thread_info_flags & (1 << TIF_SIGPENDING))
do_signal(regs, syscall);
if (thread_info_flags & (1 << TIF_NOTIFY_RESUME)) {
clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
- if (current->replacement_session_keyring)
- key_replace_session_keyring();
}
}