diff --git a/tcg/s390/tcg-target.c.inc b/tcg/s390/tcg-target.c.inc
index 8517e55..3fec7fe 100644
--- a/tcg/s390/tcg-target.c.inc
+++ b/tcg/s390/tcg-target.c.inc
@@ -42,6 +42,19 @@
 #define TCG_CT_CONST_S33   0x400
 #define TCG_CT_CONST_ZERO  0x800
 
+#define ALL_GENERAL_REGS     MAKE_64BIT_MASK(0, 16)
+/*
+ * For softmmu, we need to avoid conflicts with the first 3
+ * argument registers to perform the tlb lookup, and to call
+ * the helper function.
+ */
+#ifdef CONFIG_SOFTMMU
+#define SOFTMMU_RESERVE_REGS MAKE_64BIT_MASK(TCG_REG_R2, 3)
+#else
+#define SOFTMMU_RESERVE_REGS 0
+#endif
+
+
 /* Several places within the instruction set 0 means "no register"
    rather than TCG_REG_R0.  */
 #define TCG_REG_NONE    0
@@ -403,46 +416,6 @@
     return false;
 }
 
-/* parse target specific constraints */
-static const char *target_parse_constraint(TCGArgConstraint *ct,
-                                           const char *ct_str, TCGType type)
-{
-    switch (*ct_str++) {
-    case 'r':                  /* all registers */
-        ct->regs = 0xffff;
-        break;
-    case 'L':                  /* qemu_ld/st constraint */
-        ct->regs = 0xffff;
-        tcg_regset_reset_reg(ct->regs, TCG_REG_R2);
-        tcg_regset_reset_reg(ct->regs, TCG_REG_R3);
-        tcg_regset_reset_reg(ct->regs, TCG_REG_R4);
-        break;
-    case 'a':                  /* force R2 for division */
-        ct->regs = 0;
-        tcg_regset_set_reg(ct->regs, TCG_REG_R2);
-        break;
-    case 'b':                  /* force R3 for division */
-        ct->regs = 0;
-        tcg_regset_set_reg(ct->regs, TCG_REG_R3);
-        break;
-    case 'A':
-        ct->ct |= TCG_CT_CONST_S33;
-        break;
-    case 'I':
-        ct->ct |= TCG_CT_CONST_S16;
-        break;
-    case 'J':
-        ct->ct |= TCG_CT_CONST_S32;
-        break;
-    case 'Z':
-        ct->ct |= TCG_CT_CONST_ZERO;
-        break;
-    default:
-        return NULL;
-    }
-    return ct_str;
-}
-
 /* Test if a constant matches the constraint. */
 static int tcg_target_const_match(tcg_target_long val, TCGType type,
                                   const TCGArgConstraint *arg_ct)