Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 71 insertions, 0 deletions

diff --git a/arch/um/kernel/skas/trap_user.c b/arch/um/kernel/skas/trap_user.c
new file mode 100644
index 000000000000..8e9b46d4702e
--- /dev/null
+++ b/arch/um/kernel/skas/trap_user.c
@@ -0,0 +1,71 @@
+/* 
+ * Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com)
+ * Licensed under the GPL
+ */
+
+#include <signal.h>
+#include <errno.h>
+#include "sysdep/ptrace.h"
+#include "signal_user.h"
+#include "user_util.h"
+#include "kern_util.h"
+#include "task.h"
+#include "sigcontext.h"
+
+void sig_handler_common_skas(int sig, void *sc_ptr)
+{
+        struct sigcontext *sc = sc_ptr;
+        struct skas_regs *r;
+        struct signal_info *info;
+        int save_errno = errno;
+        int save_user;
+
+        /* This is done because to allow SIGSEGV to be delivered inside a SEGV
+         * handler.  This can happen in copy_user, and if SEGV is disabled,
+         * the process will die.
+         * XXX Figure out why this is better than SA_NODEFER
+         */
+        if(sig == SIGSEGV)
+                change_sig(SIGSEGV, 1);
+
+        r = &TASK_REGS(get_current())->skas;
+        save_user = r->is_user;
+        r->is_user = 0;
+        r->fault_addr = SC_FAULT_ADDR(sc);
+        r->fault_type = SC_FAULT_TYPE(sc);
+        r->trap_type = SC_TRAP_TYPE(sc);
+
+        change_sig(SIGUSR1, 1);
+        info = &sig_info[sig];
+        if(!info->is_irq) unblock_signals();
+
+        (*info->handler)(sig, (union uml_pt_regs *) r);
+
+        errno = save_errno;
+        r->is_user = save_user;
+}
+
+void user_signal(int sig, union uml_pt_regs *regs)
+{
+        struct signal_info *info;
+
+        regs->skas.is_user = 1;
+        regs->skas.fault_addr = 0;
+        regs->skas.fault_type = 0;
+        regs->skas.trap_type = 0;
+        info = &sig_info[sig];
+        (*info->handler)(sig, regs);
+
+        unblock_signals();
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */