mips: replace addi with addiu

ADDI instruction has been removed in R6 so let's use ADDIU instead.

This patch has been sent upstream:

  https://bugs.kde.org/show_bug.cgi?id=356112

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>

Index: valgrind/coregrind/m_dispatch/dispatch-mips32-linux.S
===================================================================
--- valgrind/coregrind/m_dispatch/dispatch-mips32-linux.S	(revision 15740)
+++ valgrind/coregrind/m_dispatch/dispatch-mips32-linux.S	(working copy)
@@ -196,7 +196,7 @@
         addu $13, $13, $14
 
         lw $12, 0($13) /* t3 = VG_(tt_fast)[hash] :: ULong* */
-        addi $13, $13, 4
+        addiu $13, $13, 4
         lw $25, 0($13) /* little-endian, so comparing 1st 32bit word */
         nop
 
Index: valgrind/coregrind/m_dispatch/dispatch-mips64-linux.S
===================================================================
--- valgrind/coregrind/m_dispatch/dispatch-mips64-linux.S	(revision 15740)
+++ valgrind/coregrind/m_dispatch/dispatch-mips64-linux.S	(working copy)
@@ -196,7 +196,7 @@
         daddu $13, $13, $14

         ld $12, 0($13) /* t3 = VG_(tt_fast)[hash] :: ULong* */
-        daddi $13, $13, 8
+        daddiu $13, $13, 8
         ld $25, 0($13) /* little-endian, so comparing 1st 32bit word */
         nop

Index: valgrind/coregrind/m_libcsetjmp.c
===================================================================
--- valgrind/coregrind/m_libcsetjmp.c	(revision 15740)
+++ valgrind/coregrind/m_libcsetjmp.c	(working copy)
@@ -594,7 +594,7 @@
 /* Checking whether second argument is zero. */
 "   bnez $a1, 1f                \n\t"
 "   nop                         \n\t"
-"   addi $a1, $a1, 1            \n\t"  /* We must return 1 if val=0. */
+"   addiu $a1, $a1, 1           \n\t"  /* We must return 1 if val=0. */
 "1:                             \n\t"
 "   move $v0, $a1               \n\t"  /* Return value of second argument. */
 "   j    $ra                    \n\t"
Index: valgrind/coregrind/m_syswrap/syswrap-mips64-linux.c
===================================================================
--- valgrind/coregrind/m_syswrap/syswrap-mips64-linux.c	(revision 15740)
+++ valgrind/coregrind/m_syswrap/syswrap-mips64-linux.c	(working copy)
@@ -173,7 +173,7 @@
 "   ld $30, 8($29)\n"
 "   ld $28, 16($29)\n"
 "   jr $31\n"
-"   daddi $29,$29, 32\n"
+"   daddiu $29,$29, 32\n"
 ".previous\n"
 );

Index: valgrind/coregrind/m_trampoline.S
===================================================================
--- valgrind/coregrind/m_trampoline.S	(revision 15740)
+++ valgrind/coregrind/m_trampoline.S	(working copy)
@@ -1254,8 +1254,8 @@
       //la $a0, string
       j strlen_cond
    strlen_loop:
-      addi $v0, $v0, 1
-      addi $a0, $a0, 1
+      addiu $v0, $v0, 1
+      addiu $a0, $a0, 1
    strlen_cond:
       lbu $t0, ($a0)
       bne $t0, $zero, strlen_loop
Index: valgrind/helgrind/tests/tc08_hbl2.c
===================================================================
--- valgrind/helgrind/tests/tc08_hbl2.c	(revision 15740)
+++ valgrind/helgrind/tests/tc08_hbl2.c	(working copy)
@@ -125,11 +125,11 @@
 #  define INC(_lval,_lqual)                         \
      __asm__ __volatile__ (                         \
       "L1xyzzy1" _lqual":\n"                        \
-      "        move $t0, %0\n"                      \
-      "        ll   $t1, 0($t0)\n"                  \
-      "        addi $t1, $t1, 1\n"                  \
-      "        sc   $t1, 0($t0)\n"                  \
-      "        beqz $t1, L1xyzzy1" _lqual           \
+      "        move  $t0, %0\n"                     \
+      "        ll    $t1, 0($t0)\n"                 \
+      "        addiu $t1, $t1, 1\n"                 \
+      "        sc    $t1, 0($t0)\n"                 \
+      "        beqz  $t1, L1xyzzy1" _lqual          \
       : /*out*/ : /*in*/ "r"(&(_lval))              \
       : /*trash*/ "t0", "t1", "memory"              \
         )
Index: valgrind/VEX/priv/guest_mips_toIR.c
===================================================================
--- valgrind/VEX/priv/guest_mips_toIR.c	(revision 3206)
+++ valgrind/VEX/priv/guest_mips_toIR.c	(working copy)
@@ -16794,6 +16794,7 @@
                                      mkU64(0x0) : mkU32(0x0)))), imm);
       break;

+#if defined(__mips__) && ((defined(__mips_isa_rev) && __mips_isa_rev < 6))
    case 0x08: {  /* ADDI */
       DIP("addi r%u, r%u, %u", rt, rs, imm);
       IRTemp tmpRs32 = newTemp(Ity_I32);
@@ -16831,6 +16832,8 @@
       putIReg(rt,  mkWidenFrom32(ty, mkexpr(t0), True));
       break;
    }
+#endif
+
    case 0x09:  /* ADDIU */
       DIP("addiu r%u, r%u, %u", rt, rs, imm);
       if (mode64) {
@@ -16888,7 +16891,8 @@
                                             mkU32(extend_s_16to32(imm)))));
       break;

-   case 0x18: {  /* Doubleword Add Immidiate - DADD; MIPS64 */
+#if defined(__mips__) && ((defined(__mips_isa_rev) && __mips_isa_rev < 6))
+   case 0x18: {  /* Doubleword Add Immidiate - DADDI; MIPS64 */
       DIP("daddi r%u, r%u, %u", rt, rs, imm);
       IRTemp tmpRs64 = newTemp(Ity_I64);
       assign(tmpRs64, getIReg(rs));
@@ -16926,6 +16930,7 @@
       putIReg(rt,  mkexpr(t0));
       break;
    }
+#endif

    case 0x19:  /* Doubleword Add Immidiate Unsigned - DADDIU; MIPS64 */
       DIP("daddiu r%u, r%u, %u", rt, rs, imm);