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

The funny "range" exception table entries we had were only
used by the compat layer socketcall assembly, and it wasn't
even needed there.

For free we now get proper exception table sorting and fast
binary searching.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 13 deletions

diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index f8e7005fede9..1aa15990f5af 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -189,19 +189,18 @@ void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, un
 
         if (regs->tstate & TSTATE_PRIV) {
                 /* Test if this comes from uaccess places. */
-                unsigned long fixup;
-                unsigned long g2 = regs->u_regs[UREG_G2];
+                const struct exception_table_entry *entry;
 
-                if ((fixup = search_extables_range(regs->tpc, &g2))) {
-                        /* Ouch, somebody is trying ugly VM hole tricks on us... */
+                entry = search_exception_tables(regs->tpc);
+                if (entry) {
+                        /* Ouch, somebody is trying VM hole tricks on us... */
 #ifdef DEBUG_EXCEPTIONS
                         printk("Exception: PC<%016lx> faddr<UNKNOWN>\n", regs->tpc);
-                        printk("EX_TABLE: insn<%016lx> fixup<%016lx> "
-                               "g2<%016lx>\n", regs->tpc, fixup, g2);
+                        printk("EX_TABLE: insn<%016lx> fixup<%016lx>\n",
+                               regs->tpc, entry->fixup);
 #endif
-                        regs->tpc = fixup;
+                        regs->tpc = entry->fixup;
                         regs->tnpc = regs->tpc + 4;
-                        regs->u_regs[UREG_G2] = g2;
                         return;
                 }
                 /* Shit... */
@@ -1610,10 +1609,10 @@ void cheetah_deferred_handler(struct pt_regs *regs, unsigned long afsr, unsigned
                         /* OK, usermode access. */
                         recoverable = 1;
                 } else {
-                        unsigned long g2 = regs->u_regs[UREG_G2];
-                        unsigned long fixup = search_extables_range(regs->tpc, &g2);
+                        const struct exception_table_entry *entry;
 
-                        if (fixup != 0UL) {
+                        entry = search_exception_tables(regs->tpc);
+                        if (entry) {
                                 /* OK, kernel access to userspace. */
                                 recoverable = 1;
 
@@ -1632,9 +1631,8 @@ void cheetah_deferred_handler(struct pt_regs *regs, unsigned long afsr, unsigned
                                  * recoverable condition.
                                  */
                                 if (recoverable) {
-                                        regs->tpc = fixup;
+                                        regs->tpc = entry->fixup;
                                         regs->tnpc = regs->tpc + 4;
-                                        regs->u_regs[UREG_G2] = g2;
                                 }
                         }
                 }