Linux-2.6.12-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!
diff --git a/arch/um/kernel/trap_user.c b/arch/um/kernel/trap_user.c
new file mode 100644
index 0000000..50a4042
--- /dev/null
+++ b/arch/um/kernel/trap_user.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <asm/page.h>
+#include <asm/unistd.h>
+#include <asm/ptrace.h>
+#include "init.h"
+#include "sysdep/ptrace.h"
+#include "sigcontext.h"
+#include "sysdep/sigcontext.h"
+#include "irq_user.h"
+#include "signal_user.h"
+#include "time_user.h"
+#include "task.h"
+#include "mode.h"
+#include "choose-mode.h"
+#include "kern_util.h"
+#include "user_util.h"
+#include "os.h"
+
+void kill_child_dead(int pid)
+{
+ kill(pid, SIGKILL);
+ kill(pid, SIGCONT);
+ do {
+ int n;
+ CATCH_EINTR(n = waitpid(pid, NULL, 0));
+ if (n > 0)
+ kill(pid, SIGCONT);
+ else
+ break;
+ } while(1);
+}
+
+/* Unlocked - don't care if this is a bit off */
+int nsegfaults = 0;
+
+struct {
+ unsigned long address;
+ int is_write;
+ int pid;
+ unsigned long sp;
+ int is_user;
+} segfault_record[1024];
+
+void segv_handler(int sig, union uml_pt_regs *regs)
+{
+ int index, max;
+
+ if(UPT_IS_USER(regs) && !UPT_SEGV_IS_FIXABLE(regs)){
+ bad_segv(UPT_FAULT_ADDR(regs), UPT_IP(regs),
+ UPT_FAULT_WRITE(regs));
+ return;
+ }
+ max = sizeof(segfault_record)/sizeof(segfault_record[0]);
+ index = next_trap_index(max);
+
+ nsegfaults++;
+ segfault_record[index].address = UPT_FAULT_ADDR(regs);
+ segfault_record[index].pid = os_getpid();
+ segfault_record[index].is_write = UPT_FAULT_WRITE(regs);
+ segfault_record[index].sp = UPT_SP(regs);
+ segfault_record[index].is_user = UPT_IS_USER(regs);
+ segv(UPT_FAULT_ADDR(regs), UPT_IP(regs), UPT_FAULT_WRITE(regs),
+ UPT_IS_USER(regs), regs);
+}
+
+void usr2_handler(int sig, union uml_pt_regs *regs)
+{
+ CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0);
+}
+
+struct signal_info sig_info[] = {
+ [ SIGTRAP ] { .handler = relay_signal,
+ .is_irq = 0 },
+ [ SIGFPE ] { .handler = relay_signal,
+ .is_irq = 0 },
+ [ SIGILL ] { .handler = relay_signal,
+ .is_irq = 0 },
+ [ SIGWINCH ] { .handler = winch,
+ .is_irq = 1 },
+ [ SIGBUS ] { .handler = bus_handler,
+ .is_irq = 0 },
+ [ SIGSEGV] { .handler = segv_handler,
+ .is_irq = 0 },
+ [ SIGIO ] { .handler = sigio_handler,
+ .is_irq = 1 },
+ [ SIGVTALRM ] { .handler = timer_handler,
+ .is_irq = 1 },
+ [ SIGALRM ] { .handler = timer_handler,
+ .is_irq = 1 },
+ [ SIGUSR2 ] { .handler = usr2_handler,
+ .is_irq = 0 },
+};
+
+void do_longjmp(void *b, int val)
+{
+ sigjmp_buf *buf = b;
+
+ siglongjmp(*buf, val);
+}
+
+/*
+ * 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:
+ */