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, 142 insertions, 0 deletions

diff --git a/arch/v850/kernel/bug.c b/arch/v850/kernel/bug.c
new file mode 100644
index 000000000000..c78cf750915a
--- /dev/null
+++ b/arch/v850/kernel/bug.c
@@ -0,0 +1,142 @@
+/*
+ * arch/v850/kernel/bug.c -- Bug reporting functions
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/sched.h>
+#include <linux/module.h>
+
+#include <asm/errno.h>
+#include <asm/ptrace.h>
+#include <asm/processor.h>
+#include <asm/current.h>
+
+/* We should use __builtin_return_address, but it doesn't work in gcc-2.90
+   (which is currently our standard compiler on the v850).  */
+#define ret_addr() ({ register u32 lp asm ("lp"); lp; })
+#define stack_addr() ({ register u32 sp asm ("sp"); sp; })
+
+void __bug ()
+{
+        printk (KERN_CRIT "kernel BUG at PC 0x%x (SP ~0x%x)!\n",
+                ret_addr() - 4, /* - 4 for `jarl' */
+                stack_addr());
+        machine_halt ();
+}
+
+int bad_trap (int trap_num, struct pt_regs *regs)
+{
+        printk (KERN_CRIT
+                "unimplemented trap %d called at 0x%08lx, pid %d!\n",
+                trap_num, regs->pc, current->pid);
+        return -ENOSYS;
+}
+
+#ifdef CONFIG_RESET_GUARD
+void unexpected_reset (unsigned long ret_addr, unsigned long kmode,
+                       struct task_struct *task, unsigned long sp)
+{
+        printk (KERN_CRIT
+                "unexpected reset in %s mode, pid %d"
+                " (ret_addr = 0x%lx, sp = 0x%lx)\n",
+                kmode ? "kernel" : "user",
+                task ? task->pid : -1,
+                ret_addr, sp);
+
+        machine_halt ();
+}
+#endif /* CONFIG_RESET_GUARD */
+
+
+
+struct spec_reg_name {
+        const char *name;
+        int gpr;
+};
+
+struct spec_reg_name spec_reg_names[] = {
+        { "sp", GPR_SP },
+        { "gp", GPR_GP },
+        { "tp", GPR_TP },
+        { "ep", GPR_EP },
+        { "lp", GPR_LP },
+        { 0, 0 }
+};
+
+void show_regs (struct pt_regs *regs)
+{
+        int gpr_base, gpr_offs;
+
+        printk ("     pc 0x%08lx    psw 0x%08lx                       kernel_mode %d\n",
+                regs->pc, regs->psw, regs->kernel_mode);
+        printk ("   ctpc 0x%08lx  ctpsw 0x%08lx   ctbp 0x%08lx\n",
+                regs->ctpc, regs->ctpsw, regs->ctbp);
+
+        for (gpr_base = 0; gpr_base < NUM_GPRS; gpr_base += 4) {
+                for (gpr_offs = 0; gpr_offs < 4; gpr_offs++) {
+                        int gpr = gpr_base + gpr_offs;
+                        long val = regs->gpr[gpr];
+                        struct spec_reg_name *srn;
+
+                        for (srn = spec_reg_names; srn->name; srn++)
+                                if (srn->gpr == gpr)
+                                        break;
+
+                        if (srn->name)
+                                printk ("%7s 0x%08lx", srn->name, val);
+                        else
+                                printk ("    r%02d 0x%08lx", gpr, val);
+                }
+
+                printk ("\n");
+        }
+}
+
+/*
+ * TASK is a pointer to the task whose backtrace we want to see (or NULL
+ * for current task), SP is the stack pointer of the first frame that
+ * should be shown in the back trace (or NULL if the entire call-chain of
+ * the task should be shown).
+ */
+void show_stack (struct task_struct *task, unsigned long *sp)
+{
+        unsigned long addr, end;
+
+        if (sp)
+                addr = (unsigned long)sp;
+        else if (task)
+                addr = task_sp (task);
+        else
+                addr = stack_addr ();
+
+        addr = addr & ~3;
+        end = (addr + THREAD_SIZE - 1) & THREAD_MASK;
+
+        while (addr < end) {
+                printk ("%8lX: ", addr);
+                while (addr < end) {
+                        printk (" %8lX", *(unsigned long *)addr);
+                        addr += sizeof (unsigned long);
+                        if (! (addr & 0xF))
+                                break;
+                }
+                printk ("\n");
+        }
+}
+
+void dump_stack ()
+{
+        show_stack (0, 0);
+}
+
+EXPORT_SYMBOL(dump_stack);