[SPARC64]: Convert to use generic exception table support.

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / sparc64 / mm / extable.c

diff --git a/arch/sparc64/mm/extable.c b/arch/sparc64/mm/extable.c
deleted file mode 100644 (file)
index ec33429..0000000
--- a/arch/sparc64/mm/extable.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * linux/arch/sparc64/mm/extable.c
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <asm/uaccess.h>
-
-extern const struct exception_table_entry __start___ex_table[];
-extern const struct exception_table_entry __stop___ex_table[];
-
-void sort_extable(struct exception_table_entry *start,
-                 struct exception_table_entry *finish)
-{
-}
-
-/* Caller knows they are in a range if ret->fixup == 0 */
-const struct exception_table_entry *
-search_extable(const struct exception_table_entry *start,
-              const struct exception_table_entry *last,
-              unsigned long value)
-{
-       const struct exception_table_entry *walk;
-
-       /* Single insn entries are encoded as:
-        *      word 1: insn address
-        *      word 2: fixup code address
-        *
-        * Range entries are encoded as:
-        *      word 1: first insn address
-        *      word 2: 0
-        *      word 3: last insn address + 4 bytes
-        *      word 4: fixup code address
-        *
-        * See asm/uaccess.h for more details.
-        */
-
-       /* 1. Try to find an exact match. */
-       for (walk = start; walk <= last; walk++) {
-               if (walk->fixup == 0) {
-                       /* A range entry, skip both parts. */
-                       walk++;
-                       continue;
-               }
-
-               if (walk->insn == value)
-                       return walk;
-       }
-
-       /* 2. Try to find a range match. */
-       for (walk = start; walk <= (last - 1); walk++) {
-               if (walk->fixup)
-                       continue;
-
-               if (walk[0].insn <= value && walk[1].insn > value)
-                       return walk;
-
-               walk++;
-       }
-
-        return NULL;
-}
-
-/* Special extable search, which handles ranges.  Returns fixup */
-unsigned long search_extables_range(unsigned long addr, unsigned long *g2)
-{
-       const struct exception_table_entry *entry;
-
-       entry = search_exception_tables(addr);
-       if (!entry)
-               return 0;
-
-       /* Inside range?  Fix g2 and return correct fixup */
-       if (!entry->fixup) {
-               *g2 = (addr - entry->insn) / 4;
-               return (entry + 1)->fixup;
-       }
-
-       return entry->fixup;
-}