arch: remove blackfin port

[sfrench/cifs-2.6.git] / arch / blackfin / kernel / dumpstack.c

diff --git a/arch/blackfin/kernel/dumpstack.c b/arch/blackfin/kernel/dumpstack.c
deleted file mode 100644 (file)
index 3c992c1..0000000
--- a/arch/blackfin/kernel/dumpstack.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/* Provide basic stack dumping functions
- *
- * Copyright 2004-2009 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later
- */
-
-#include <linux/kernel.h>
-#include <linux/thread_info.h>
-#include <linux/mm.h>
-#include <linux/uaccess.h>
-#include <linux/module.h>
-#include <linux/sched/debug.h>
-
-#include <asm/trace.h>
-
-/*
- * Checks to see if the address pointed to is either a
- * 16-bit CALL instruction, or a 32-bit CALL instruction
- */
-static bool is_bfin_call(unsigned short *addr)
-{
-       unsigned int opcode;
-
-       if (!get_instruction(&opcode, addr))
-               return false;
-
-       if ((opcode >= 0x0060 && opcode <= 0x0067) ||
-           (opcode >= 0x0070 && opcode <= 0x0077) ||
-           (opcode >= 0xE3000000 && opcode <= 0xE3FFFFFF))
-               return true;
-
-       return false;
-
-}
-
-void show_stack(struct task_struct *task, unsigned long *stack)
-{
-#ifdef CONFIG_PRINTK
-       unsigned int *addr, *endstack, *fp = 0, *frame;
-       unsigned short *ins_addr;
-       char buf[150];
-       unsigned int i, j, ret_addr, frame_no = 0;
-
-       /*
-        * If we have been passed a specific stack, use that one otherwise
-        *    if we have been passed a task structure, use that, otherwise
-        *    use the stack of where the variable "stack" exists
-        */
-
-       if (stack == NULL) {
-               if (task) {
-                       /* We know this is a kernel stack, so this is the start/end */
-                       stack = (unsigned long *)task->thread.ksp;
-                       endstack = (unsigned int *)(((unsigned int)(stack) & ~(THREAD_SIZE - 1)) + THREAD_SIZE);
-               } else {
-                       /* print out the existing stack info */
-                       stack = (unsigned long *)&stack;
-                       endstack = (unsigned int *)PAGE_ALIGN((unsigned int)stack);
-               }
-       } else
-               endstack = (unsigned int *)PAGE_ALIGN((unsigned int)stack);
-
-       printk(KERN_NOTICE "Stack info:\n");
-       decode_address(buf, (unsigned int)stack);
-       printk(KERN_NOTICE " SP: [0x%p] %s\n", stack, buf);
-
-       if (!access_ok(VERIFY_READ, stack, (unsigned int)endstack - (unsigned int)stack)) {
-               printk(KERN_NOTICE "Invalid stack pointer\n");
-               return;
-       }
-
-       /* First thing is to look for a frame pointer */
-       for (addr = (unsigned int *)((unsigned int)stack & ~0xF); addr < endstack; addr++) {
-               if (*addr & 0x1)
-                       continue;
-               ins_addr = (unsigned short *)*addr;
-               ins_addr--;
-               if (is_bfin_call(ins_addr))
-                       fp = addr - 1;
-
-               if (fp) {
-                       /* Let's check to see if it is a frame pointer */
-                       while (fp >= (addr - 1) && fp < endstack
-                              && fp && ((unsigned int) fp & 0x3) == 0)
-                               fp = (unsigned int *)*fp;
-                       if (fp == 0 || fp == endstack) {
-                               fp = addr - 1;
-                               break;
-                       }
-                       fp = 0;
-               }
-       }
-       if (fp) {
-               frame = fp;
-               printk(KERN_NOTICE " FP: (0x%p)\n", fp);
-       } else
-               frame = 0;
-
-       /*
-        * Now that we think we know where things are, we
-        * walk the stack again, this time printing things out
-        * incase there is no frame pointer, we still look for
-        * valid return addresses
-        */
-
-       /* First time print out data, next time, print out symbols */
-       for (j = 0; j <= 1; j++) {
-               if (j)
-                       printk(KERN_NOTICE "Return addresses in stack:\n");
-               else
-                       printk(KERN_NOTICE " Memory from 0x%08lx to %p", ((long unsigned int)stack & ~0xF), endstack);
-
-               fp = frame;
-               frame_no = 0;
-
-               for (addr = (unsigned int *)((unsigned int)stack & ~0xF), i = 0;
-                    addr < endstack; addr++, i++) {
-
-                       ret_addr = 0;
-                       if (!j && i % 8 == 0)
-                               printk(KERN_NOTICE "%p:", addr);
-
-                       /* if it is an odd address, or zero, just skip it */
-                       if (*addr & 0x1 || !*addr)
-                               goto print;
-
-                       ins_addr = (unsigned short *)*addr;
-
-                       /* Go back one instruction, and see if it is a CALL */
-                       ins_addr--;
-                       ret_addr = is_bfin_call(ins_addr);
- print:
-                       if (!j && stack == (unsigned long *)addr)
-                               printk("[%08x]", *addr);
-                       else if (ret_addr)
-                               if (j) {
-                                       decode_address(buf, (unsigned int)*addr);
-                                       if (frame == addr) {
-                                               printk(KERN_NOTICE "   frame %2i : %s\n", frame_no, buf);
-                                               continue;
-                                       }
-                                       printk(KERN_NOTICE "    address : %s\n", buf);
-                               } else
-                                       printk("<%08x>", *addr);
-                       else if (fp == addr) {
-                               if (j)
-                                       frame = addr+1;
-                               else
-                                       printk("(%08x)", *addr);
-
-                               fp = (unsigned int *)*addr;
-                               frame_no++;
-
-                       } else if (!j)
-                               printk(" %08x ", *addr);
-               }
-               if (!j)
-                       printk("\n");
-       }
-#endif
-}
-EXPORT_SYMBOL(show_stack);
-
-void dump_stack(void)
-{
-       unsigned long stack;
-#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
-       int tflags;
-#endif
-       trace_buffer_save(tflags);
-       dump_bfin_trace_buffer();
-       dump_stack_print_info(KERN_DEFAULT);
-       show_stack(current, &stack);
-       trace_buffer_restore(tflags);
-}
-EXPORT_SYMBOL(dump_stack);