2008-08-22 Zoltan Varga <vargaz@gmail.com>
[mono.git] / mono / mini / inssel-s390.brg
index c8c79b74412dfada3de5047c99a7ff82eb268147..74758869c9171d4bbdb390ce465f099e226b2f4b 100644 (file)
@@ -17,7 +17,7 @@ stmt: OP_START_HANDLER {
        mono_bblock_add_inst (s->cbb, tree);
 }
 
-stmt: CEE_ENDFINALLY {
+stmt: OP_ENDFINALLY {
        MonoInst *spvar = mono_find_spvar_for_region (s, s->cbb->region);
        tree->inst_left = spvar;
        mono_bblock_add_inst (s->cbb, tree);
@@ -30,28 +30,42 @@ stmt: OP_ENDFILTER (reg) {
        mono_bblock_add_inst (s->cbb, tree);
 }
 
-lreg: OP_LADD_OVF (lreg, lreg) "0" {
-       /* ADC sets the condition code */
-       MONO_EMIT_NEW_BIALU (s, OP_ADDCC, state->reg1, state->left->reg1, state->right->reg1);
-       MONO_EMIT_NEW_BIALU (s, OP_ADD_OVF_CARRY, state->reg2, state->left->reg2, state->right->reg2);
+lreg: OP_LADD (lreg, lreg),
+lreg: OP_LADD_OVF (lreg, lreg),
+lreg: OP_LADD_OVF_UN (lreg, lreg),
+lreg: OP_LSUB (lreg, lreg),
+lreg: OP_LSUB_OVF (lreg, lreg),
+lreg: OP_LSUB_OVF_UN (lreg, lreg) "0" {
+       MONO_EMIT_NEW_UNALU (s, OP_MOVE, s390_r0, state->left->reg1);
+       MONO_EMIT_NEW_UNALU (s, OP_MOVE, s390_r1, state->left->reg2);
+       tree->dreg    = state->reg1;
+       tree->sreg1   = state->right->reg1;
+       tree->sreg2   = state->right->reg2;
+       mono_bblock_add_inst (s->cbb, tree);
 }
 
-lreg: OP_LADD_OVF_UN (lreg, lreg) "0" {
-       /* ADC sets the condition code */
-       MONO_EMIT_NEW_BIALU (s, OP_ADDCC, state->reg1, state->left->reg1, state->right->reg1);
-       MONO_EMIT_NEW_BIALU (s, OP_ADD_OVF_UN_CARRY, state->reg2, state->left->reg2, state->right->reg2);
+lreg: OP_LADD (lreg, i8con) "0" {
+       MONO_EMIT_NEW_ICONST (s, s390_r0, state->right->tree->inst_ls_word);
+       MONO_EMIT_NEW_ICONST (s, s390_r1, state->right->tree->inst_ms_word);
+       tree->dreg    = state->reg1;
+       tree->sreg1   = state->left->reg1;
+       tree->sreg2   = state->left->reg2;
+       mono_bblock_add_inst (s->cbb, tree);
 }
 
-lreg: OP_LSUB_OVF (lreg, lreg) "0" {
-       /* SBB sets the condition code */
-       MONO_EMIT_NEW_BIALU (s, OP_SUBCC, state->reg1, state->left->reg1, state->right->reg1);
-       MONO_EMIT_NEW_BIALU (s, OP_SUB_OVF_CARRY, state->reg2, state->left->reg2, state->right->reg2);
-}
+lreg: OP_LSUB (lreg, i8con) "0" {
+       int rh,rl;
 
-lreg: OP_LSUB_OVF_UN (lreg, lreg) "0" {
-       /* SBB sets the condition code */
-       MONO_EMIT_NEW_BIALU (s, OP_SUBCC, state->reg1, state->left->reg1, state->right->reg1);
-       MONO_EMIT_NEW_BIALU (s, OP_SUB_OVF_UN_CARRY, state->reg2, state->left->reg2, state->right->reg2);
+       MONO_EMIT_NEW_UNALU (s, OP_MOVE, s390_r0, state->left->reg1);
+       MONO_EMIT_NEW_UNALU (s, OP_MOVE, s390_r1, state->left->reg2);
+       rh = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_ICONST (s, rh, state->right->tree->inst_ls_word);
+       rl = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_ICONST (s, rl, state->right->tree->inst_ms_word);
+       tree->dreg    = state->reg1;
+       tree->sreg1   = rh;
+       tree->sreg2   = rl;
+       mono_bblock_add_inst (s->cbb, tree);
 }
 
 reg: CEE_ADD_OVF (reg, reg) "0" {
@@ -104,14 +118,14 @@ freg: CEE_CONV_R_UN (reg) {
 }
 
 stmt: OP_MEMCPY (reg, reg) "0" {
-       int size = tree->unused;
+       int size = tree->backend.memcpy_args->size;
        if (size > 0) 
                MONO_EMIT_NEW_MOVE (s, state->left->reg1, 0, 
                                    state->right->reg1, 0, size);
 }
 
 stmt: OP_MEMCPY (base, base) "0" {
-       int size = tree->unused;
+       int size = tree->backend.memcpy_args->size;
        if (size > 0)  
                MONO_EMIT_NEW_MOVE (s, state->left->tree->sreg1, 
                                    state->left->tree->inst_offset, 
@@ -168,138 +182,167 @@ stmt: OP_SETRET (OP_ICONST) {
        mono_bblock_add_inst (s->cbb, tree);
 }
 
-lreg: OP_LSUB_OVF_UN (lreg, lreg) "0" {
-       /*----------------------------------------------------------------------*/
-       /* SBB sets the condition code - CC 0 or 1 indicates Borrow == Overflow */
-       /*----------------------------------------------------------------------*/
-       MONO_EMIT_NEW_BIALU (s, OP_SUBCC, state->reg1, state->left->reg1, state->right->reg1);
-       MONO_EMIT_NEW_BIALU (s, OP_SBB, state->reg2, state->left->reg2, state->right->reg2);
-       MONO_EMIT_NEW_COND_EXC (s, NC, "OverflowException");
-}
-
 stmt: OP_OUTARG (reg) {
-       if (tree->inst_imm) {
-               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, tree->inst_imm, state->left->reg1);
-               return;
-       }
-       tree->opcode = OP_SETREG;
-       tree->dreg = tree->unused;
-       tree->sreg1 = state->left->reg1;
+       MonoCallInst *call = (MonoCallInst*)tree->inst_right;
+
+       tree->opcode = OP_MOVE;
+       tree->dreg   = mono_regstate_next_int (s->rs);
+       tree->sreg1  = state->left->reg1;
        mono_bblock_add_inst (s->cbb, tree);
+
+       mono_call_inst_add_outarg_reg (s, call, tree->dreg, tree->backend.reg3, FALSE);
+}
+
+stmt: OP_OUTARG_MEMBASE (reg) {
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+
+       MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, 
+                                    arg->offset, state->left->reg1);
 }
 
 stmt: OP_OUTARG (OP_REGVAR) {
-       if (tree->inst_imm) {
-               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, tree->inst_imm, state->left->tree->dreg);
-               return;
-       }
-       tree->opcode = OP_SETREG;
-       tree->dreg = tree->unused;
-       tree->sreg1 = state->left->tree->dreg;
+       MonoCallInst *call = (MonoCallInst*) tree->inst_right;
+
+       tree->opcode       = OP_MOVE;
+       tree->dreg         = mono_regstate_next_int (s->rs);
+       tree->sreg1        = state->left->tree->dreg;
        mono_bblock_add_inst (s->cbb, tree);
+
+       mono_call_inst_add_outarg_reg (s, call, tree->dreg, tree->backend.reg3, FALSE);
+}
+
+stmt: OP_OUTARG_MEMBASE (OP_REGVAR) {
+       MonoCallArgParm *arg = (MonoCallArgParm *)  tree;
+
+       MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, 
+                                    arg->offset, state->left->tree->dreg);
 }
 
 stmt: OP_OUTARG (lreg) {
-       if (tree->inst_imm) {
-               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, tree->inst_imm, state->left->reg2);
-               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, tree->inst_imm + 4, state->left->reg1);
-               return;
-       }
-       MONO_EMIT_NEW_UNALU (s, OP_SETREG, tree->unused, state->left->reg2);
-       tree->opcode = OP_SETREG;
-       tree->dreg = tree->unused + 1;
+       MonoCallInst *call = (MonoCallInst*)tree->inst_right;
+       int tdreg;
+
+       tdreg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_UNALU (s, OP_MOVE, tdreg, state->left->reg2);
+       
+       mono_call_inst_add_outarg_reg (s, call, tdreg, tree->backend.reg3, FALSE);
+
+       tree->opcode = OP_MOVE;
+       tree->dreg = mono_regstate_next_int (s->rs);
        tree->sreg1 = state->left->reg1;
        mono_bblock_add_inst (s->cbb, tree);
+       
+       mono_call_inst_add_outarg_reg (s, call, tree->dreg, tree->backend.reg3 + 1, FALSE);
+}
+
+stmt: OP_OUTARG_MEMBASE (lreg) {
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+
+       MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, 
+                                    arg->offset, state->left->reg2);
+       MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, 
+                                    arg->offset + 4, state->left->reg1);
 }
 
 stmt: OP_OUTARG (OP_ICONST) {
-       if (tree->inst_imm) {
-               MONO_EMIT_NEW_STORE_MEMBASE_IMM (s, OP_STORE_MEMBASE_IMM, STK_BASE, tree->inst_imm, state->left->tree->inst_c0);
-               return;
-       }
-       tree->opcode = OP_SETREGIMM;
-       tree->dreg = tree->unused;
-       tree->inst_c0 = state->left->tree->inst_c0;
+       MonoCallInst *call = (MonoCallInst*)tree->inst_right;
+
+       tree->opcode       = OP_ICONST;
+       tree->dreg         = mono_regstate_next_int (s->rs);
+       tree->inst_c0      = state->left->tree->inst_c0;
        mono_bblock_add_inst (s->cbb, tree);
+
+       mono_call_inst_add_outarg_reg (s, call, tree->dreg, tree->backend.reg3, FALSE);
+}
+
+stmt: OP_OUTARG_MEMBASE (OP_ICONST) {
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+
+       MONO_EMIT_NEW_STORE_MEMBASE_IMM (s, OP_STORE_MEMBASE_IMM, STK_BASE, 
+                                        arg->offset, state->left->tree->inst_c0);
 }
 
 stmt: OP_OUTARG (CEE_LDIND_REF (OP_REGVAR)) {
-       if (tree->inst_imm) {
-               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, tree->inst_imm, state->left->left->tree->dreg);
-               return;
-       }
-       tree->opcode = OP_SETREG;
-       tree->sreg1 = state->left->left->tree->dreg;
-       tree->dreg = tree->unused;
+       MonoCallInst *call = (MonoCallInst*) tree->inst_right;
+
+       tree->opcode       = OP_MOVE;
+       tree->sreg1        = state->left->left->tree->dreg;
+       tree->dreg         = mono_regstate_next_int (s->rs);
        mono_bblock_add_inst (s->cbb, tree);
+
+       mono_call_inst_add_outarg_reg (s, call, tree->dreg, tree->backend.reg3, FALSE);
 }
 
-stmt: OP_OUTARG (OP_LDADDR (OP_S390_LOADARG)) {
-       if (tree->inst_imm) {
-               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, tree->inst_imm, state->left->left->tree->dreg);
-               return;
-       }
-       MONO_EMIT_BIALU_IMM (s, tree, OP_ADD_IMM, tree->unused,
-                            state->left->left->tree->sreg1,
-                            state->left->left->tree->inst_offset);
+stmt: OP_OUTARG_MEMBASE (CEE_LDIND_REF (OP_REGVAR)) {
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+
+       MONO_EMIT_NEW_STORE_MEMBASE_IMM (s, OP_STORE_MEMBASE_IMM, STK_BASE, 
+                                        arg->offset, state->left->tree->inst_c0);
 }
 
-stmt: OP_OUTARG (freg) {
-       if (tree->inst_imm) {
-               /*----------------------------------------------*/
-               /* The length stored in unused tells us whether */
-               /* we need to store a float or a double         */
-               /*----------------------------------------------*/
-               if ((tree->unused & 0xff00) == 0x0400) {
-                       MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORER4_MEMBASE_REG, 
-                                                    STK_BASE, tree->inst_imm, 
-                                                    state->left->reg1);
-               } else {
-                       MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORER8_MEMBASE_REG, 
-                                                    STK_BASE, tree->inst_imm, 
-                                                    state->left->reg1);
-               }
-               return;
-       }
-       tree->opcode = OP_SETFREG;
-       tree->sreg1 = state->left->reg1;
-       tree->dreg = tree->unused;
-       mono_bblock_add_inst (s->cbb, tree);
+stmt: OP_OUTARG_MEMBASE (OP_LDADDR (OP_S390_LOADARG)) {
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+
+       MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, STK_BASE, 
+                                    arg->offset, state->left->left->tree->dreg);
+}
+
+freg: OP_FCONV_TO_R4 (freg) "0" {
+       /* The conversion is done elsewhere */
+       MONO_EMIT_UNALU (s, tree, OP_FMOVE, state->reg1, state->left->reg1);
 }
 
 stmt: OP_OUTARG_R4 (freg) {
-       if (tree->inst_imm) {
-               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORER4_MEMBASE_REG, STK_BASE, tree->inst_imm, state->left->reg1);
-               return;
-       }
-       tree->opcode = OP_SETFREG;
-       tree->sreg1 = state->left->reg1;
-       tree->dreg = tree->unused;
+       MonoCallInst *call = (MonoCallInst*)tree->inst_right;
+
+       tree->opcode = OP_S390_SETF4RET;
+       tree->dreg   = mono_regstate_next_float (s->rs);
+       tree->sreg1  = state->left->reg1;
        mono_bblock_add_inst (s->cbb, tree);
+
+       mono_call_inst_add_outarg_reg (s, call, tree->dreg, tree->backend.reg3, TRUE);
 }
 
-stmt: OP_OUTARG_R8 (freg) {
-       if (tree->inst_imm) {
-               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORER8_MEMBASE_REG, STK_BASE, 
-                                            tree->inst_imm, state->left->reg1);
-               return;
-       }
-       tree->opcode = OP_SETFREG;
-       tree->sreg1 = state->left->reg1;
-       tree->dreg = tree->unused;
+stmt: OP_OUTARG_R8 (freg),
+stmt: OP_OUTARG (freg) {
+       MonoCallInst *call = (MonoCallInst*)tree->inst_right;
+
+       tree->opcode = OP_FMOVE;
+       tree->dreg   = mono_regstate_next_float (s->rs);
+       tree->sreg1  = state->left->reg1;
        mono_bblock_add_inst (s->cbb, tree);
+
+       mono_call_inst_add_outarg_reg (s, call, tree->dreg, tree->backend.reg3, TRUE);
 }
 
-stmt: OP_OUTARG_R8 (CEE_LDOBJ (OP_REGOFFSET)) {
-       if (tree->inst_imm) {
-               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORER8_MEMBASE_REG, STK_BASE, 
-                                            tree->inst_imm, state->left->reg1);
-               return;
+stmt: OP_OUTARG_MEMBASE (freg) {
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+
+       /*----------------------------------------------*/
+       /* The length stored in size tells us whether   */
+       /* we need to store a float or a double         */
+       /*----------------------------------------------*/
+       if (arg->size == 4) {
+               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORER4_MEMBASE_REG, 
+                                            STK_BASE, arg->offset,
+                                            state->left->reg1);
+       } else {
+               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORER8_MEMBASE_REG, 
+                                            STK_BASE, arg->offset,
+                                            state->left->reg1);
        }
-       tree->opcode = OP_SETFREG;
-       tree->sreg1 = state->left->reg1;
-       tree->dreg = tree->unused;
+}
+
+stmt: OP_OUTARG_R4 (CEE_LDOBJ (OP_REGOFFSET)),
+stmt: OP_OUTARG_R8 (CEE_LDOBJ (OP_REGOFFSET)) {
+       MonoCallInst *call = (MonoCallInst*)tree->inst_right;
+
+       tree->opcode = OP_FMOVE;
+       tree->dreg   = mono_regstate_next_float (s->rs);
+       tree->sreg1  = state->left->reg1;
        mono_bblock_add_inst (s->cbb, tree);
+
+       mono_call_inst_add_outarg_reg (s, call, tree->dreg, tree->backend.reg3, TRUE);
 }
 
 freg: OP_FCONV_TO_R4 (CEE_LDOBJ (OP_REGOFFSET)) {
@@ -311,158 +354,169 @@ freg: OP_FCONV_TO_R4 (CEE_LDOBJ (OP_REGOFFSET)) {
 }
 
 freg: OP_FCONV_TO_R8 (CEE_LDOBJ (OP_REGOFFSET)) {
-       tree->opcode = OP_SETFREG;
+       tree->opcode = OP_FMOVE;
        tree->sreg1 = state->left->reg1;
-       tree->dreg = tree->unused;
+       tree->dreg = tree->backend.reg3;
        mono_bblock_add_inst (s->cbb, tree);
 }
 
 
 stmt: OP_OUTARG_VT (CEE_LDOBJ (base)) {
-       MonoInst *vt  = state->left->left->tree;
+       MonoCallInst *call   = (MonoCallInst*) tree->inst_right;
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+       MonoInst *vt         = state->left->left->tree;
+       
        int start_reg = tree->sreg1;
-       int size      = tree->unused;
+       int size      = arg->size;
        int soffset   = vt->inst_offset;
-       int tmpr;
+       int treg;
        
-//printf("OP_OUTARG_VT(CEE_LDOBJ(base))\n");
        if (size < 0) { 
                size = -size;
+               treg = mono_regstate_next_int (s->rs);
                if (start_reg != STK_BASE) {
-                       MONO_EMIT_NEW_MOVE(s, STK_BASE, tree->sreg2,
+                       MONO_EMIT_NEW_MOVE(s, STK_BASE, arg->offPrm,
                                           vt->inst_basereg, soffset, size);
-                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, start_reg, 
-                                                STK_BASE, tree->sreg2);
+                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, 
+                                                STK_BASE, arg->offPrm);
+                       mono_call_inst_add_outarg_reg (s, call, treg, start_reg, FALSE);
                } else { 
-                       MONO_EMIT_NEW_MOVE(s, STK_BASE, tree->sreg2+sizeof(gpointer),
+                       MONO_EMIT_NEW_MOVE(s, STK_BASE, arg->offPrm,
                                           vt->inst_basereg, soffset, size);
-                       tmpr = mono_regstate_next_int (s->rs);
-                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, STK_BASE, 
-                                                tree->sreg2+sizeof(gpointer));
+                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, STK_BASE, arg->offPrm);
                        MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, 
-                                                    STK_BASE, tree->sreg2, tmpr);
+                                                    STK_BASE, arg->offset, treg);
                }
        } else {
                if (start_reg != STK_BASE) {
                        MONO_OUTPUT_VTR (s, size, start_reg, vt->inst_basereg, soffset);
                } else {
-                       MONO_OUTPUT_VTS (s, size, STK_BASE, tree->inst_imm,
+                       MONO_OUTPUT_VTS (s, size, STK_BASE, arg->offset,
                                         vt->inst_basereg, soffset);
                }       
        }
 }
 
 stmt: OP_OUTARG_VT (CEE_LDOBJ (OP_S390_ARGPTR)) {
-       MonoInst *vt  = state->left->left->tree;
+       MonoCallInst *call   = (MonoCallInst*) tree->inst_right;
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+       MonoInst *vt         = state->left->left->tree;
+       
        int start_reg = tree->sreg1;
-       int size      = tree->unused;
+       int size      = arg->size;
        int soffset   = vt->inst_offset;
-       int tmpr;
 
-//printf("OP_OUTARG_VT(CEE_LDOBJ(OP_S390_ARGPTR))\n");
-       if (size < 0) { 
-               size = -size;
-               if (start_reg != STK_BASE) {
-                       MONO_EMIT_NEW_MOVE (s, STK_BASE, tree->inst_imm,
-                                           vt->inst_basereg, soffset, size);
-                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, start_reg, 
-                                                STK_BASE, tree->sreg2);
-               } else {
-                       MONO_EMIT_NEW_MOVE (s, STK_BASE, 
-                                           tree->inst_imm+sizeof(gpointer),
-                                           vt->inst_basereg, soffset, size);
-                       tmpr = mono_regstate_next_int (s->rs);
-                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, STK_BASE,
-                                                tree->inst_imm+sizeof(gpointer));
-                       MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, 
-                                                    STK_BASE, tree->inst_imm,
-                                                    tmpr);
-               }
+       if (start_reg != STK_BASE) {
+               MONO_OUTPUT_VTR (s, size, start_reg, vt->inst_basereg, soffset);
        } else {
-               if (start_reg != STK_BASE) {
-                       MONO_OUTPUT_VTR (s, size, start_reg, vt->inst_basereg, soffset);
-               } else {
-                       MONO_OUTPUT_VTS (s, size, STK_BASE, 
-                                        tree->inst_imm,
-                                        vt->inst_basereg, soffset);
-               }       
-       }
+               
+               MONO_OUTPUT_VTS (s, size, STK_BASE, arg->offset,
+                                vt->inst_basereg, soffset);
+       }       
 }
 
 stmt: OP_OUTARG_VT (CEE_LDOBJ (OP_REGOFFSET)) "0" {
-       MonoInst *vt  = state->left->left->tree;
+       MonoCallInst *call   = (MonoCallInst*) tree->inst_right;
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+       MonoInst *vt         = state->left->left->tree;
+       
        int start_reg = tree->sreg1;
-       int size      = tree->unused;
+       int size      = arg->size;
        int soffset   = vt->inst_offset;
-       int tmpr;
+       int treg;
 
 //printf("OP_OUTARG_VT(CEE_LDOBJ(OP_REGOFFSET))\n");
        if (size < 0) { 
                size = -size;
+               treg = mono_regstate_next_int (s->rs);
                if (start_reg != STK_BASE) {
-                       MONO_EMIT_NEW_MOVE (s, STK_BASE, tree->sreg2, 
+//                     MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg,
+//                                              STK_BASE, soffset);
+                       MONO_EMIT_NEW_MOVE (s, STK_BASE, arg->offPrm,
                                            vt->inst_basereg, soffset, size);
-                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, start_reg, 
-                                                STK_BASE, tree->sreg2);
+                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg,
+                                                STK_BASE, arg->offPrm);
+                       mono_call_inst_add_outarg_reg (s, call, treg, start_reg, FALSE);
                } else {
-                       MONO_EMIT_NEW_MOVE (s, STK_BASE, 
-                                           tree->sreg2+sizeof(gpointer),
+                       MONO_EMIT_NEW_MOVE (s, STK_BASE, arg->offPrm,
                                            vt->inst_basereg, soffset, size);
-                       tmpr = mono_regstate_next_int (s->rs);
-                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, STK_BASE,
-                                                tree->sreg2+sizeof(gpointer));
+                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, STK_BASE, arg->offPrm);
                        MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, 
-                                                    STK_BASE, tree->sreg2,
-                                                    tmpr);
+                                                    STK_BASE, arg->offset, treg);
                }
        } else {
                if (start_reg != STK_BASE) {
                        MONO_OUTPUT_VTR(s, size, start_reg, vt->inst_basereg, soffset);
                } else {
-                       MONO_OUTPUT_VTS(s, size, STK_BASE, tree->inst_imm,
+                       MONO_OUTPUT_VTS(s, size, STK_BASE, arg->offset,
                                          vt->inst_basereg, soffset);
                }       
        }
 }
 
 stmt: OP_OUTARG_VT (CEE_LDOBJ (OP_S390_LOADARG)) {
-       MonoInst *vt  = state->left->left->tree;
-       int start_reg = tree->sreg1;
-       int size      = -tree->unused;
+       MonoCallInst *call   = (MonoCallInst*) tree->inst_right;
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+       MonoInst *vt         = state->left->left->tree;
+       
+       int start_reg = tree->inst_basereg;
+       int size      = -arg->size;
        int soffset   = vt->inst_offset;
-       int tmpr;
+       int treg;
 
 //printf("OP_OUTARG_VT(CEE_LDOBJ(OP_S390_LOADARG))\n");
+       treg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_UNALU (s, OP_S390_BKCHAIN, treg, s->frame_reg);
+       MONO_EMIT_NEW_LOAD_MEMBASE (s, treg, treg, vt->backend.arg_info);
+       MONO_EMIT_NEW_MOVE (s, STK_BASE, soffset, treg, 0, size);
+       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, STK_BASE, soffset);
        if (start_reg != STK_BASE) {
-               MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, start_reg, STK_BASE, soffset);
-               MONO_EMIT_NEW_MOVE (s, STK_BASE, tree->sreg2, start_reg, 0, size);
-               MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, start_reg, 
-                                        STK_BASE, tree->sreg2);
+               mono_call_inst_add_outarg_reg (s, call, treg, start_reg, FALSE);
+       } else {
+               MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, 
+                                            STK_BASE, arg->offset, treg);
+       }
+}
+
+stmt: OP_OUTARG_VT (CEE_LDOBJ (OP_S390_ARGREG)) {
+       MonoCallInst *call   = (MonoCallInst*) tree->inst_right;
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+       MonoInst *vt         = state->left->left->tree;
+       
+       int base_reg = tree->inst_basereg;
+       int size     = -arg->size;
+       int soffset  = vt->inst_offset;
+       int treg;
+
+//printf("OP_OUTARG_VT(CEE_LDOBJ(OP_S390_ARGREG))\n");
+       treg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_LOAD_MEMBASE (s, treg, s->frame_reg, soffset);
+       MONO_EMIT_NEW_MOVE (s, STK_BASE, arg->offPrm, treg, 0, size);
+       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, STK_BASE, arg->offPrm);
+       if (base_reg != STK_BASE) {
+               mono_call_inst_add_outarg_reg (s, call, treg, base_reg, FALSE);
        } else {
-               MONO_EMIT_NEW_MOVE (s, STK_BASE, 
-                                   tree->inst_imm+sizeof(gpointer),
-                                   vt->inst_basereg, soffset, size);
-               tmpr = mono_regstate_next_int (s->rs);
-               MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, STK_BASE,
-                                        tree->inst_imm+sizeof(gpointer));
                MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, 
-                                            STK_BASE, tree->inst_imm,
-                                            tmpr);
+                                            STK_BASE, arg->offset, treg);
        }
 }
 
 stmt: OP_OUTARG_VT (OP_ICONST) {
+       MonoCallInst *call   = (MonoCallInst*) tree->inst_right;
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+
        int start_reg = tree->sreg1;
-       int size      = tree->unused;
+       int size      = arg->size;
        int nregs     = size / 4;
 
 //printf("OP_OUTARG_VT(OP_ICONST)\n");
        if (start_reg != STK_BASE) {
                if (nregs) {
-                       tree->opcode  = OP_SETREGIMM;
-                       tree->dreg    = start_reg;
+                       tree->opcode  = OP_ICONST;
+                       tree->dreg    = mono_regstate_next_int (s->rs);
                        tree->inst_c0 = state->left->tree->inst_c0;
                        mono_bblock_add_inst (s->cbb, tree);
+                       mono_call_inst_add_outarg_reg (s, call, tree->dreg, start_reg, FALSE);
                }
        } else {
                MONO_OUTPUT_VTS (s, size, STK_BASE, tree->inst_c0, 
@@ -471,43 +525,40 @@ stmt: OP_OUTARG_VT (OP_ICONST) {
 }
 
 stmt: OP_OUTARG_VT (reg) {
-       int start_reg = tree->sreg1;
-       int size      = tree->unused;
-       int soffset   = tree->sreg2;
-       int tmpr;
+       MonoCallInst *call   = (MonoCallInst*) tree->inst_right;
+       MonoCallArgParm *arg = (MonoCallArgParm *) tree; 
+       MonoInst *vt         = state->left->left->tree;
+       int start_reg        = tree->sreg1;
+       int size             = arg->size;
+       int soffset          = vt->inst_offset;
+       int treg;
 
-//printf("OP_OUTARG_VT(reg)\n");
        if (size < 0) { 
                size = -size;
+               treg = mono_regstate_next_int (s->rs);
                if (start_reg != STK_BASE) {
-                       MONO_EMIT_NEW_MOVE (s, STK_BASE, soffset,
-                                           state->left->tree->sreg1,
-                                           tree->inst_imm, size);
-                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, start_reg, 
-                                                STK_BASE, soffset);
+                       MONO_EMIT_NEW_MOVE (s, STK_BASE, arg->offPrm, state->left->reg1,
+                                           0, size);
+                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg,
+                                                STK_BASE, arg->offPrm);
+                       mono_call_inst_add_outarg_reg (s, call, treg, start_reg, FALSE);
                } else {
-                       MONO_EMIT_NEW_MOVE (s, STK_BASE, 
-                                           soffset+sizeof(gpointer),
-                                           state->left->tree->sreg1,
-                                           tree->inst_imm, size);
-                       tmpr = mono_regstate_next_int (s->rs);
-                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, STK_BASE,
-                                                soffset+sizeof(gpointer));
+                       MONO_EMIT_NEW_MOVE (s, STK_BASE, soffset+size, state->left->reg1,
+                                           0, size);
+                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, STK_BASE,
+                                                soffset+size);
                        MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, 
-                                                    STK_BASE, tree->inst_imm,
-                                                    tmpr);
+                                                    STK_BASE, arg->offset, treg);
                }
        } else {
                if (start_reg != STK_BASE) {
-//                     MONO_OUTPUT_VTR (s, size, start_reg, STK_BASE,
-//                                      state->left->tree->inst_offset);
                        MONO_OUTPUT_VTR (s, size, start_reg, STK_BASE, soffset);
                } else {
-                       MONO_OUTPUT_VTS (s, size, STK_BASE, soffset, tmpr,
+                       treg = mono_regstate_next_int (s->rs);
+                       MONO_OUTPUT_VTS (s, size, STK_BASE, soffset, treg,
                                         state->left->tree->inst_offset);
-                       tmpr = mono_regstate_next_int (s->rs);
-                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, STK_BASE, 
-                                               s->stack_offset);
+                       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, STK_BASE, 
+                                                s->stack_offset);
                }
        }
 }
@@ -516,9 +567,6 @@ stmt: OP_OUTARG_VT (OP_REFANYTYPE (reg)) "0" {
 //printf("OP_OUTARG_VT (OP_REFANYTYPE (base))\n");
        MONO_EMIT_NEW_LOAD_MEMBASE (s, state->tree->sreg1, state->left->left->reg1, 
                                    G_STRUCT_OFFSET (MonoTypedRef, type));
-//     MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STOREI4_MEMBASE_REG, STK_BASE,
-//                                  tree->sreg2, state->reg1);
-//     MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, state->reg1, STK_BASE, tree->sreg2);
 }      
 
 stmt: CEE_STIND_R8 (OP_REGVAR, freg) {
@@ -621,55 +669,57 @@ reg: OP_CGT_UN (OP_COMPARE (freg, freg)) {
 }
 
 base: OP_S390_STKARG "0" {
-       int tmpr;
+       int treg;
 
-       tmpr = mono_regstate_next_int (s->rs);
-//     MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, s->frame_reg, 
-//                             (s->stack_offset+state->tree->unused));
-       MONO_EMIT_NEW_LOAD_MEMBASE (s, tmpr, s->frame_reg, 0);
+       treg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_UNALU (s, OP_S390_BKCHAIN, treg, s->frame_reg);
        tree->inst_offset  = state->tree->inst_offset;
-       tree->inst_basereg = tmpr;
+       tree->inst_basereg = treg;
+}
+
+reg: OP_LDADDR (OP_S390_ARGREG),
+reg: CEE_LDOBJ (OP_S390_ARGREG) "0" {
+       MONO_EMIT_LOAD_MEMBASE (s, tree, state->reg1, s->frame_reg, state->left->tree->inst_offset);
 }
 
 base: OP_LDADDR (OP_S390_LOADARG) "0" {
-       int tmpr;
+       int treg;
 
-       tmpr = mono_regstate_next_int (s->rs);
-       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, s->frame_reg, 
-                                state->left->tree->inst_offset);
+       treg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_UNALU (s, OP_S390_BKCHAIN, treg, s->frame_reg);
+       MONO_EMIT_NEW_LOAD_MEMBASE (s, treg, treg, state->left->tree->backend.arg_info);
        tree->inst_offset  = 0;
-       tree->inst_basereg = tmpr;
+       tree->inst_basereg = treg;
 }
 
 base: OP_LDADDR (OP_S390_ARGPTR) "0" {
-       int tmpr;
+       int treg;
 
-       tmpr = mono_regstate_next_int (s->rs);
-       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, s->frame_reg, 
+       treg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, s->frame_reg, 
                                 state->left->tree->inst_offset);
        tree->inst_offset  = 0;
-       tree->inst_basereg = tmpr;
+       tree->inst_basereg = treg;
 }
 
 base: OP_LDADDR (OP_S390_STKARG) "0" {
-       int tmpr;
-
-printf("OP_LDADDR (OP_S390_STKARG)\n");
-       tmpr = mono_regstate_next_int (s->rs);
-//     MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, s->frame_reg, 
-//                              (s->stack_offset + state->left->tree->unused));
-       MONO_EMIT_NEW_LOAD_MEMBASE (s, tmpr, s->frame_reg, 0);
-       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, tmpr, 
+       int treg;
+
+printf("base: OP_LDADDR(OP_S390_STKARG) 0\n");
+       treg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_UNALU (s, OP_S390_BKCHAIN, treg, s->frame_reg);
+       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, treg, 
                                 state->left->tree->inst_offset);
        tree->inst_offset  = 0;
-       tree->inst_basereg = tmpr;
+       tree->inst_basereg = treg;
 }
 
-reg: OP_LDADDR (OP_S390_LOADARG) "2" {
-       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, state->reg1, s->frame_reg, 
-                                state->left->tree->inst_offset);
-       tree->inst_offset  = 0;
-       tree->inst_basereg = state->reg1;
+reg: OP_LDADDR (OP_S390_LOADARG) {
+       int treg;
+
+       treg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_UNALU (s, OP_S390_BKCHAIN, treg, s->frame_reg);
+       MONO_EMIT_NEW_LOAD_MEMBASE (s, state->reg1, treg, state->left->tree->inst_offset);
 }
 
 reg: OP_LDADDR (OP_S390_ARGPTR) "2" {
@@ -680,10 +730,10 @@ reg: OP_LDADDR (OP_S390_ARGPTR) "2" {
 }
 
 reg: OP_LDADDR (OP_S390_STKARG) "2" {
-       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, state->reg1, s->frame_reg, 
-                                (s->stack_offset + state->left->tree->unused));
-       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, state->reg1, state->reg1, 
-                                state->left->tree->inst_offset);
+       MONO_EMIT_NEW_UNALU (s, OP_S390_BKCHAIN, state->reg1, s->frame_reg);
+       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, state->reg1, state->reg1,
+                                (state->left->tree->backend.arg_info +
+                                 state->left->tree->inst_offset));
        tree->inst_offset  = 0;
        tree->inst_basereg = state->reg1;
 }
@@ -699,33 +749,34 @@ reg: CEE_LDOBJ (OP_S390_ARGPTR) "1" {
 }
 
 reg: CEE_LDOBJ (OP_S390_STKARG) "1" {
-       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, state->reg1, s->frame_reg,
-                                (s->stack_offset + state->left->tree->unused));
+printf("reg: CEE_LDOBJ(OP_S390_STKARG)\n");
+       MONO_EMIT_NEW_UNALU (s, OP_S390_BKCHAIN, state->reg1, s->frame_reg);
        MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, state->reg1, state->reg1,
-                                state->left->tree->inst_offset);
+                                (state->left->tree->inst_offset + 
+                                 state->left->tree->backend.arg_info));
        tree->inst_offset  = 0;
        tree->inst_basereg = state->reg1;
 }
 
 base: CEE_LDOBJ (OP_S390_ARGPTR) "0" {
-       int tmpr;
+       int treg;
 
-       tmpr = mono_regstate_next_int (s->rs);
-       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, s->frame_reg, 
+       treg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, s->frame_reg, 
                                    state->left->tree->inst_offset);
        tree->inst_offset  = 0;
-       tree->inst_basereg = tmpr;
+       tree->inst_basereg = treg;
 }
 
 base: CEE_LDOBJ (OP_S390_STKARG) "0" {
-       int tmpr;
+       int treg;
 
-       tmpr = mono_regstate_next_int (s->rs);
-       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, tmpr, s->frame_reg,
-                                (s->stack_offset + state->left->tree->unused));
-       MONO_EMIT_NEW_LOAD_MEMBASE (s, tmpr, tmpr, state->left->tree->inst_offset);
+       treg = mono_regstate_next_int (s->rs);
+       MONO_EMIT_NEW_UNALU (s, OP_S390_BKCHAIN, treg, s->frame_reg);
+       MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, treg, treg, state->left->tree->backend.arg_info);
+       MONO_EMIT_NEW_LOAD_MEMBASE (s, treg, treg, state->left->tree->inst_offset);
        tree->inst_offset  = 0;
-       tree->inst_basereg = tmpr;
+       tree->inst_basereg = treg;
 }
 
 reg: OP_ATOMIC_ADD_NEW_I4 (base, reg),