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Diffstat (limited to 'arch/sh/kernel')
-rw-r--r--arch/sh/kernel/ptrace_32.c23
-rw-r--r--arch/sh/kernel/signal_32.c25
2 files changed, 46 insertions, 2 deletions
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index fddb547f3c2..2bc72def5cf 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -241,6 +241,29 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
break;
}
#endif
+#ifdef CONFIG_BINFMT_ELF_FDPIC
+ case PTRACE_GETFDPIC: {
+ unsigned long tmp = 0;
+
+ switch (addr) {
+ case PTRACE_GETFDPIC_EXEC:
+ tmp = child->mm->context.exec_fdpic_loadmap;
+ break;
+ case PTRACE_GETFDPIC_INTERP:
+ tmp = child->mm->context.interp_fdpic_loadmap;
+ break;
+ default:
+ break;
+ }
+
+ ret = 0;
+ if (put_user(tmp, (unsigned long *) data)) {
+ ret = -EFAULT;
+ break;
+ }
+ break;
+ }
+#endif
default:
ret = ptrace_request(child, request, addr, data);
break;
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index f311551d9a0..46170a9a722 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -33,6 +33,11 @@
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+struct fdpic_func_descriptor {
+ unsigned long text;
+ unsigned long GOT;
+};
+
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
@@ -378,7 +383,15 @@ static int setup_frame(int sig, struct k_sigaction *ka,
regs->regs[4] = signal; /* Arg for signal handler */
regs->regs[5] = 0;
regs->regs[6] = (unsigned long) &frame->sc;
- regs->pc = (unsigned long) ka->sa.sa_handler;
+
+ if (current->personality & FDPIC_FUNCPTRS) {
+ struct fdpic_func_descriptor __user *funcptr =
+ (struct fdpic_func_descriptor __user *)ka->sa.sa_handler;
+
+ __get_user(regs->pc, &funcptr->text);
+ __get_user(regs->regs[12], &funcptr->GOT);
+ } else
+ regs->pc = (unsigned long)ka->sa.sa_handler;
set_fs(USER_DS);
@@ -458,7 +471,15 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->regs[4] = signal; /* Arg for signal handler */
regs->regs[5] = (unsigned long) &frame->info;
regs->regs[6] = (unsigned long) &frame->uc;
- regs->pc = (unsigned long) ka->sa.sa_handler;
+
+ if (current->personality & FDPIC_FUNCPTRS) {
+ struct fdpic_func_descriptor __user *funcptr =
+ (struct fdpic_func_descriptor __user *)ka->sa.sa_handler;
+
+ __get_user(regs->pc, &funcptr->text);
+ __get_user(regs->regs[12], &funcptr->GOT);
+ } else
+ regs->pc = (unsigned long)ka->sa.sa_handler;
set_fs(USER_DS);