7 files changed, 101 insertions, 186 deletions

diff --git a/arch/sparc64/kernel/sys32.S b/arch/sparc64/kernel/sys32.S
index 5f9e4fae612e..4fb99e0bc7c3 100644
--- a/arch/sparc64/kernel/sys32.S
+++ b/arch/sparc64/kernel/sys32.S
@@ -158,163 +158,163 @@ sys32_socketcall:	/* %o0=call, %o1=args */
         jmpl            %g2 + %o0, %g0
          nop
 
-        /* Each entry is exactly 32 bytes. */
         .align          32
 __socketcall_table_begin:
+
+        /* Each entry is exactly 32 bytes. */
 do_sys_socket: /* sys_socket(int, int, int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+1:      ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_socket), %g1
-        ldswa           [%o1 + 0x8] %asi, %o2
+2:      ldswa           [%o1 + 0x8] %asi, %o2
         jmpl            %g1 + %lo(sys_socket), %g0
-         ldswa          [%o1 + 0x4] %asi, %o1
+3:       ldswa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
 do_sys_bind: /* sys_bind(int fd, struct sockaddr *, int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+4:      ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_bind), %g1
-        ldswa           [%o1 + 0x8] %asi, %o2
+5:      ldswa           [%o1 + 0x8] %asi, %o2
         jmpl            %g1 + %lo(sys_bind), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+6:       lduwa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
 do_sys_connect: /* sys_connect(int, struct sockaddr *, int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+7:      ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_connect), %g1
-        ldswa           [%o1 + 0x8] %asi, %o2
+8:      ldswa           [%o1 + 0x8] %asi, %o2
         jmpl            %g1 + %lo(sys_connect), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+9:       lduwa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
 do_sys_listen: /* sys_listen(int, int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+10:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_listen), %g1
         jmpl            %g1 + %lo(sys_listen), %g0
-         ldswa          [%o1 + 0x4] %asi, %o1
+11:      ldswa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
         nop
 do_sys_accept: /* sys_accept(int, struct sockaddr *, int *) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+12:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_accept), %g1
-        lduwa           [%o1 + 0x8] %asi, %o2
+13:     lduwa           [%o1 + 0x8] %asi, %o2
         jmpl            %g1 + %lo(sys_accept), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+14:      lduwa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
 do_sys_getsockname: /* sys_getsockname(int, struct sockaddr *, int *) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+15:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_getsockname), %g1
-        lduwa           [%o1 + 0x8] %asi, %o2
+16:     lduwa           [%o1 + 0x8] %asi, %o2
         jmpl            %g1 + %lo(sys_getsockname), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+17:      lduwa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
 do_sys_getpeername: /* sys_getpeername(int, struct sockaddr *, int *) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+18:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_getpeername), %g1
-        lduwa           [%o1 + 0x8] %asi, %o2
+19:     lduwa           [%o1 + 0x8] %asi, %o2
         jmpl            %g1 + %lo(sys_getpeername), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+20:      lduwa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
 do_sys_socketpair: /* sys_socketpair(int, int, int, int *) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+21:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_socketpair), %g1
-        ldswa           [%o1 + 0x8] %asi, %o2
-        lduwa           [%o1 + 0xc] %asi, %o3
+22:     ldswa           [%o1 + 0x8] %asi, %o2
+23:     lduwa           [%o1 + 0xc] %asi, %o3
         jmpl            %g1 + %lo(sys_socketpair), %g0
-         ldswa          [%o1 + 0x4] %asi, %o1
+24:      ldswa          [%o1 + 0x4] %asi, %o1
         nop
         nop
 do_sys_send: /* sys_send(int, void *, size_t, unsigned int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+25:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_send), %g1
-        lduwa           [%o1 + 0x8] %asi, %o2
-        lduwa           [%o1 + 0xc] %asi, %o3
+26:     lduwa           [%o1 + 0x8] %asi, %o2
+27:     lduwa           [%o1 + 0xc] %asi, %o3
         jmpl            %g1 + %lo(sys_send), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+28:      lduwa          [%o1 + 0x4] %asi, %o1
         nop
         nop
 do_sys_recv: /* sys_recv(int, void *, size_t, unsigned int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+29:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_recv), %g1
-        lduwa           [%o1 + 0x8] %asi, %o2
-        lduwa           [%o1 + 0xc] %asi, %o3
+30:     lduwa           [%o1 + 0x8] %asi, %o2
+31:     lduwa           [%o1 + 0xc] %asi, %o3
         jmpl            %g1 + %lo(sys_recv), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+32:      lduwa          [%o1 + 0x4] %asi, %o1
         nop
         nop
 do_sys_sendto: /* sys_sendto(int, u32, compat_size_t, unsigned int, u32, int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+33:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_sendto), %g1
-        lduwa           [%o1 + 0x8] %asi, %o2
-        lduwa           [%o1 + 0xc] %asi, %o3
-        lduwa           [%o1 + 0x10] %asi, %o4
-        ldswa           [%o1 + 0x14] %asi, %o5
+34:     lduwa           [%o1 + 0x8] %asi, %o2
+35:     lduwa           [%o1 + 0xc] %asi, %o3
+36:     lduwa           [%o1 + 0x10] %asi, %o4
+37:     ldswa           [%o1 + 0x14] %asi, %o5
         jmpl            %g1 + %lo(sys_sendto), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+38:      lduwa          [%o1 + 0x4] %asi, %o1
 do_sys_recvfrom: /* sys_recvfrom(int, u32, compat_size_t, unsigned int, u32, u32) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+39:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_recvfrom), %g1
-        lduwa           [%o1 + 0x8] %asi, %o2
-        lduwa           [%o1 + 0xc] %asi, %o3
-        lduwa           [%o1 + 0x10] %asi, %o4
-        lduwa           [%o1 + 0x14] %asi, %o5
+40:     lduwa           [%o1 + 0x8] %asi, %o2
+41:     lduwa           [%o1 + 0xc] %asi, %o3
+42:     lduwa           [%o1 + 0x10] %asi, %o4
+43:     lduwa           [%o1 + 0x14] %asi, %o5
         jmpl            %g1 + %lo(sys_recvfrom), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+44:      lduwa          [%o1 + 0x4] %asi, %o1
 do_sys_shutdown: /* sys_shutdown(int, int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+45:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(sys_shutdown), %g1
         jmpl            %g1 + %lo(sys_shutdown), %g0
-         ldswa          [%o1 + 0x4] %asi, %o1
+46:      ldswa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
         nop
 do_sys_setsockopt: /* compat_sys_setsockopt(int, int, int, char *, int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+47:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(compat_sys_setsockopt), %g1
-        ldswa           [%o1 + 0x8] %asi, %o2
-        lduwa           [%o1 + 0xc] %asi, %o3
-        ldswa           [%o1 + 0x10] %asi, %o4
+48:     ldswa           [%o1 + 0x8] %asi, %o2
+49:     lduwa           [%o1 + 0xc] %asi, %o3
+50:     ldswa           [%o1 + 0x10] %asi, %o4
         jmpl            %g1 + %lo(compat_sys_setsockopt), %g0
-         ldswa          [%o1 + 0x4] %asi, %o1
+51:      ldswa          [%o1 + 0x4] %asi, %o1
         nop
 do_sys_getsockopt: /* compat_sys_getsockopt(int, int, int, u32, u32) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+52:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(compat_sys_getsockopt), %g1
-        ldswa           [%o1 + 0x8] %asi, %o2
-        lduwa           [%o1 + 0xc] %asi, %o3
-        lduwa           [%o1 + 0x10] %asi, %o4
+53:     ldswa           [%o1 + 0x8] %asi, %o2
+54:     lduwa           [%o1 + 0xc] %asi, %o3
+55:     lduwa           [%o1 + 0x10] %asi, %o4
         jmpl            %g1 + %lo(compat_sys_getsockopt), %g0
-         ldswa          [%o1 + 0x4] %asi, %o1
+56:      ldswa          [%o1 + 0x4] %asi, %o1
         nop
 do_sys_sendmsg: /* compat_sys_sendmsg(int, struct compat_msghdr *, unsigned int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+57:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(compat_sys_sendmsg), %g1
-        lduwa           [%o1 + 0x8] %asi, %o2
+58:     lduwa           [%o1 + 0x8] %asi, %o2
         jmpl            %g1 + %lo(compat_sys_sendmsg), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+59:      lduwa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
 do_sys_recvmsg: /* compat_sys_recvmsg(int, struct compat_msghdr *, unsigned int) */
-        ldswa           [%o1 + 0x0] %asi, %o0
+60:     ldswa           [%o1 + 0x0] %asi, %o0
         sethi           %hi(compat_sys_recvmsg), %g1
-        lduwa           [%o1 + 0x8] %asi, %o2
+61:     lduwa           [%o1 + 0x8] %asi, %o2
         jmpl            %g1 + %lo(compat_sys_recvmsg), %g0
-         lduwa          [%o1 + 0x4] %asi, %o1
+62:      lduwa          [%o1 + 0x4] %asi, %o1
         nop
         nop
         nop
-__socketcall_table_end:
 
 do_einval:
         retl
@@ -325,5 +325,20 @@ do_efault:
 
         .section        __ex_table
         .align          4
-        .word           __socketcall_table_begin, 0, __socketcall_table_end, do_efault
+        .word   1b, do_efault, 2b, do_efault, 3b, do_efault, 4b, do_efault
+        .word   5b, do_efault, 6b, do_efault, 7b, do_efault, 8b, do_efault
+        .word   9b, do_efault, 10b, do_efault, 11b, do_efault, 12b, do_efault
+        .word   13b, do_efault, 14b, do_efault, 15b, do_efault, 16b, do_efault
+        .word   17b, do_efault, 18b, do_efault, 19b, do_efault, 20b, do_efault
+        .word   21b, do_efault, 22b, do_efault, 23b, do_efault, 24b, do_efault
+        .word   25b, do_efault, 26b, do_efault, 27b, do_efault, 28b, do_efault
+        .word   29b, do_efault, 30b, do_efault, 31b, do_efault, 32b, do_efault
+        .word   33b, do_efault, 34b, do_efault, 35b, do_efault, 36b, do_efault
+        .word   37b, do_efault, 38b, do_efault, 39b, do_efault, 40b, do_efault
+        .word   41b, do_efault, 42b, do_efault, 43b, do_efault, 44b, do_efault
+        .word   45b, do_efault, 46b, do_efault, 47b, do_efault, 48b, do_efault
+        .word   49b, do_efault, 50b, do_efault, 51b, do_efault, 52b, do_efault
+        .word   53b, do_efault, 54b, do_efault, 55b, do_efault, 56b, do_efault
+        .word   57b, do_efault, 58b, do_efault, 59b, do_efault, 60b, do_efault
+        .word   61b, do_efault, 62b, do_efault
         .previous
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;
                                 }
                         }
                 }
diff --git a/arch/sparc64/kernel/unaligned.c b/arch/sparc64/kernel/unaligned.c
index 02af08ffec8f..9d6be20f4125 100644
--- a/arch/sparc64/kernel/unaligned.c
+++ b/arch/sparc64/kernel/unaligned.c
@@ -246,10 +246,10 @@ void kernel_mna_trap_fault(void)
 {
         struct pt_regs *regs = current_thread_info()->kern_una_regs;
         unsigned int insn = current_thread_info()->kern_una_insn;
-        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) {
+        entry = search_exception_tables(regs->tpc);
+        if (!entry) {
                 unsigned long address;
 
                 address = compute_effective_address(regs, insn,
@@ -270,9 +270,8 @@ void kernel_mna_trap_fault(void)
                 die_if_kernel("Oops", regs);
                 /* Not reached */
         }
-        regs->tpc = fixup;
+        regs->tpc = entry->fixup;
         regs->tnpc = regs->tpc + 4;
-        regs->u_regs [UREG_G2] = g2;
 
         regs->tstate &= ~TSTATE_ASI;
         regs->tstate |= (ASI_AIUS << 24UL);
diff --git a/arch/sparc64/mm/Makefile b/arch/sparc64/mm/Makefile
index cda87333a77b..9d0960e69f48 100644
--- a/arch/sparc64/mm/Makefile
+++ b/arch/sparc64/mm/Makefile
@@ -5,6 +5,6 @@
 EXTRA_AFLAGS := -ansi
 EXTRA_CFLAGS := -Werror
 
-obj-y    := ultra.o tlb.o fault.o init.o generic.o extable.o
+obj-y    := ultra.o tlb.o fault.o init.o generic.o
 
 obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
diff --git a/arch/sparc64/mm/extable.c b/arch/sparc64/mm/extable.c
deleted file mode 100644
index ec334297ff4f..000000000000
--- 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;
-}
diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c
index db1e3310e907..59dc9a2ece5a 100644
--- a/arch/sparc64/mm/fault.c
+++ b/arch/sparc64/mm/fault.c
@@ -242,7 +242,6 @@ static unsigned int get_fault_insn(struct pt_regs *regs, unsigned int insn)
 static void do_kernel_fault(struct pt_regs *regs, int si_code, int fault_code,
                             unsigned int insn, unsigned long address)
 {
-        unsigned long g2;
         unsigned char asi = ASI_P;
  
         if ((!insn) && (regs->tstate & TSTATE_PRIV))
@@ -273,11 +272,9 @@ static void do_kernel_fault(struct pt_regs *regs, int si_code, int fault_code,
                 }
         }
                 
-        g2 = regs->u_regs[UREG_G2];
-
         /* Is this in ex_table? */
         if (regs->tstate & TSTATE_PRIV) {
-                unsigned long fixup;
+                const struct exception_table_entry *entry;
 
                 if (asi == ASI_P && (insn & 0xc0800000) == 0xc0800000) {
                         if (insn & 0x2000)
@@ -288,10 +285,9 @@ static void do_kernel_fault(struct pt_regs *regs, int si_code, int fault_code,
         
                 /* Look in asi.h: All _S asis have LS bit set */
                 if ((asi & 0x1) &&
-                    (fixup = search_extables_range(regs->tpc, &g2))) {
-                        regs->tpc = fixup;
+                    (entry = search_exception_tables(regs->tpc))) {
+                        regs->tpc = entry->fixup;
                         regs->tnpc = regs->tpc + 4;
-                        regs->u_regs[UREG_G2] = g2;
                         return;
                 }
         } else {
diff --git a/include/asm-sparc64/uaccess.h b/include/asm-sparc64/uaccess.h
index 80a65d7e3dbf..c099aa339784 100644
--- a/include/asm-sparc64/uaccess.h
+++ b/include/asm-sparc64/uaccess.h
@@ -70,25 +70,12 @@ static inline int access_ok(int type, const void __user * addr, unsigned long si
  * with the main instruction path.  This means when everything is well,
  * we don't even have to jump over them.  Further, they do not intrude
  * on our cache or tlb entries.
- *
- * There is a special way how to put a range of potentially faulting
- * insns (like twenty ldd/std's with now intervening other instructions)
- * You specify address of first in insn and 0 in fixup and in the next
- * exception_table_entry you specify last potentially faulting insn + 1
- * and in fixup the routine which should handle the fault.
- * That fixup code will get
- * (faulting_insn_address - first_insn_in_the_range_address)/4
- * in %g2 (ie. index of the faulting instruction in the range).
  */
 
-struct exception_table_entry
-{
-        unsigned insn, fixup;
+struct exception_table_entry {
+        unsigned int insn, fixup;
 };
 
-/* Special exable search, which handles ranges.  Returns fixup */
-unsigned long search_extables_range(unsigned long addr, unsigned long *g2);
-
 extern void __ret_efault(void);
 
 /* Uh, these should become the main single-value transfer routines..