removed c++ comment
[cacao.git] / src / vm / jit / stack.c
index 676f3d7f79581ac3db336571ed9bf88c28207f2c..b50342b2875e39dd4058d017b44084dd7980e861 100644 (file)
 
    Authors: Andreas Krall
 
-   $Id: stack.c 665 2003-11-21 18:36:43Z jowenn $
+   Changes: Edwin Steiner
+
+   $Id: stack.c 787 2003-12-15 18:20:31Z edwin $
 
 */
 
 
 #include <stdio.h>
+#include <string.h>
 #include "stack.h"
 #include "global.h"
 #include "jit.h"
@@ -57,71 +60,83 @@ extern int dseglen;
 #define STACKRESET {curstack=0;stackdepth=0;}
 
 #define TYPEPANIC  {show_icmd_method();panic("Stack type mismatch");}
+#define UNDERFLOW  {show_icmd_method();panic("Stack underflow");} /* XXX why isn't this caught in parse.c? */
 #define CURKIND    curstack->varkind
 #define CURTYPE    curstack->type
 
-#define NEWSTACK(s,v,n) {new->prev=curstack;new->type=s;new->flags=0;\
+#define REQUIRE(num)  do { if (stackdepth<(num)) {UNDERFLOW;} } while(0)
+#define REQUIRE_1     REQUIRE(1)
+#define REQUIRE_2     REQUIRE(2)
+#define REQUIRE_3     REQUIRE(3)
+#define REQUIRE_4     REQUIRE(4)
+
+#define NEWSTACK(s,v,n) {new->prev=curstack;new->type=s;new->flags=0;  \
                         new->varkind=v;new->varnum=n;curstack=new;new++;}
 #define NEWSTACKn(s,n)  NEWSTACK(s,UNDEFVAR,n)
 #define NEWSTACK0(s)    NEWSTACK(s,UNDEFVAR,0)
 #define NEWXSTACK   {NEWSTACK(TYPE_ADR,STACKVAR,0);curstack=0;}
 
 #define SETDST      {iptr->dst=curstack;}
-#define POP(s)      {if(s!=curstack->type){TYPEPANIC;}\
+
+/* The following macros do NOT check stackdepth, set stackdepth and iptr->dst */
+#define POP(s)      {if(s!=curstack->type){TYPEPANIC;}                                                                         \
                      if(curstack->varkind==UNDEFVAR)curstack->varkind=TEMPVAR;\
                      curstack=curstack->prev;}
-#define POPANY      {if(curstack->varkind==UNDEFVAR)curstack->varkind=TEMPVAR;\
+#define POPANY      {if(curstack->varkind==UNDEFVAR)curstack->varkind=TEMPVAR; \
                      curstack=curstack->prev;}
 #define COPY(s,d)   {(d)->flags=0;(d)->type=(s)->type;\
                      (d)->varkind=(s)->varkind;(d)->varnum=(s)->varnum;}
+/******************************/
 
+/* The following macros check stackdepth, set stackdepth and itpr->dst */
 #define PUSHCONST(s){NEWSTACKn(s,stackdepth);SETDST;stackdepth++;}
 #define LOAD(s,v,n) {NEWSTACK(s,v,n);SETDST;stackdepth++;}
-#define STORE(s)    {POP(s);SETDST;stackdepth--;}
-#define OP1_0(s)    {POP(s);SETDST;stackdepth--;}
-#define OP1_0ANY    {POPANY;SETDST;stackdepth--;}
+#define STORE(s)    {REQUIRE_1;POP(s);SETDST;stackdepth--;}
+#define OP1_0(s)    {REQUIRE_1;POP(s);SETDST;stackdepth--;}
+#define OP1_0ANY    {REQUIRE_1;POPANY;SETDST;stackdepth--;}
 #define OP0_1(s)    {NEWSTACKn(s,stackdepth);SETDST;stackdepth++;}
-#define OP1_1(s,d)  {POP(s);NEWSTACKn(d,stackdepth-1);SETDST;}
-#define OP2_0(s)    {POP(s);POP(s);SETDST;stackdepth-=2;}
-#define OPTT2_0(t,b){POP(t);POP(b);SETDST;stackdepth-=2;}
-#define OP2_1(s)    {POP(s);POP(s);NEWSTACKn(s,stackdepth-2);SETDST;stackdepth--;}
-#define OP2IAT_1(s) {POP(TYPE_INT);POP(TYPE_ADR);NEWSTACKn(s,stackdepth-2);\
+#define OP1_1(s,d)  {REQUIRE_1;POP(s);NEWSTACKn(d,stackdepth-1);SETDST;}
+#define OP2_0(s)    {REQUIRE_2;POP(s);POP(s);SETDST;stackdepth-=2;}
+#define OPTT2_0(t,b){REQUIRE_2;POP(t);POP(b);SETDST;stackdepth-=2;}
+#define OP2_1(s)    {REQUIRE_2;POP(s);POP(s);NEWSTACKn(s,stackdepth-2);SETDST;stackdepth--;}
+#define OP2IAT_1(s) {REQUIRE_2;POP(TYPE_INT);POP(TYPE_ADR);NEWSTACKn(s,stackdepth-2);\
                      SETDST;stackdepth--;}
-#define OP2IT_1(s)  {POP(TYPE_INT);POP(s);NEWSTACKn(s,stackdepth-2);\
+#define OP2IT_1(s)  {REQUIRE_2;POP(TYPE_INT);POP(s);NEWSTACKn(s,stackdepth-2);\
                      SETDST;stackdepth--;}
-#define OPTT2_1(s,d){POP(s);POP(s);NEWSTACKn(d,stackdepth-2);SETDST;stackdepth--;}
-#define OP2_2(s)    {POP(s);POP(s);NEWSTACKn(s,stackdepth-2);\
+#define OPTT2_1(s,d){REQUIRE_2;POP(s);POP(s);NEWSTACKn(d,stackdepth-2);SETDST;stackdepth--;}
+#define OP2_2(s)    {REQUIRE_2;POP(s);POP(s);NEWSTACKn(s,stackdepth-2);\
                      NEWSTACKn(s,stackdepth-1);SETDST;}
-#define OP3TIA_0(s) {POP(s);POP(TYPE_INT);POP(TYPE_ADR);SETDST;stackdepth-=3;}
-#define OP3_0(s)    {POP(s);POP(s);POP(s);SETDST;stackdepth-=3;}
-#define POPMANY(i)  {stackdepth-=i;while(--i>=0){POPANY;}SETDST;}
-#define DUP         {NEWSTACK(CURTYPE,CURKIND,curstack->varnum);SETDST;\
+#define OP3TIA_0(s) {REQUIRE_3;POP(s);POP(TYPE_INT);POP(TYPE_ADR);SETDST;stackdepth-=3;}
+#define OP3_0(s)    {REQUIRE_3;POP(s);POP(s);POP(s);SETDST;stackdepth-=3;}
+#define POPMANY(i)  {REQUIRE(i);stackdepth-=i;while(--i>=0){POPANY;}SETDST;}
+#define DUP         {REQUIRE_1;NEWSTACK(CURTYPE,CURKIND,curstack->varnum);SETDST; \
                     stackdepth++;}
-#define SWAP        {COPY(curstack,new);POPANY;COPY(curstack,new+1);POPANY;\
+#define SWAP        {REQUIRE_2;COPY(curstack,new);POPANY;COPY(curstack,new+1);POPANY;\
                     new[0].prev=curstack;new[1].prev=new;\
                     curstack=new+1;new+=2;SETDST;}
-#define DUP_X1      {COPY(curstack,new);COPY(curstack,new+2);POPANY;\
+#define DUP_X1      {REQUIRE_2;COPY(curstack,new);COPY(curstack,new+2);POPANY;\
                     COPY(curstack,new+1);POPANY;new[0].prev=curstack;\
                     new[1].prev=new;new[2].prev=new+1;\
                     curstack=new+2;new+=3;SETDST;stackdepth++;}
-#define DUP2_X1     {COPY(curstack,new+1);COPY(curstack,new+4);POPANY;\
+#define DUP2_X1     {REQUIRE_3;COPY(curstack,new+1);COPY(curstack,new+4);POPANY;\
                     COPY(curstack,new);COPY(curstack,new+3);POPANY;\
                     COPY(curstack,new+2);POPANY;new[0].prev=curstack;\
                     new[1].prev=new;new[2].prev=new+1;\
                     new[3].prev=new+2;new[4].prev=new+3;\
                     curstack=new+4;new+=5;SETDST;stackdepth+=2;}
-#define DUP_X2      {COPY(curstack,new);COPY(curstack,new+3);POPANY;\
+#define DUP_X2      {REQUIRE_3;COPY(curstack,new);COPY(curstack,new+3);POPANY;\
                     COPY(curstack,new+2);POPANY;COPY(curstack,new+1);POPANY;\
                     new[0].prev=curstack;new[1].prev=new;\
                     new[2].prev=new+1;new[3].prev=new+2;\
                     curstack=new+3;new+=4;SETDST;stackdepth++;}
-#define DUP2_X2     {COPY(curstack,new+1);COPY(curstack,new+5);POPANY;\
+#define DUP2_X2     {REQUIRE_4;COPY(curstack,new+1);COPY(curstack,new+5);POPANY;\
                     COPY(curstack,new);COPY(curstack,new+4);POPANY;\
                     COPY(curstack,new+3);POPANY;COPY(curstack,new+2);POPANY;\
                     new[0].prev=curstack;new[1].prev=new;\
                     new[2].prev=new+1;new[3].prev=new+2;\
                     new[4].prev=new+3;new[5].prev=new+4;\
                     curstack=new+5;new+=6;SETDST;stackdepth+=2;}
+/******************************/
 
 #define COPYCURSTACK(copy) {\
        int d;\
@@ -204,8 +219,19 @@ void analyse_stack()
        basicblock *tbptr;
        s4 *s4ptr;
        void* *tptr;
+       int *argren;
+
+       if (compileverbose) {
+               char logtext[MAXLOGTEXT];
+               sprintf(logtext, "Analysing: ");
+               utf_sprint(logtext+strlen(logtext), method->class->name);
+               strcpy(logtext+strlen(logtext), ".");
+               utf_sprint(logtext+strlen(logtext), method->name);
+               utf_sprint(logtext+strlen(logtext), method->descriptor);
+               log_text(logtext);
+       }
 
-       int *argren = DMNEW(int, maxlocals); 
+       argren = DMNEW(int, maxlocals); 
        //int *argren = (int *)alloca(maxlocals * sizeof(int)); /* table for argument renaming */
        for (i = 0; i < maxlocals; i++)
                argren[i] = i;
@@ -336,11 +362,30 @@ void analyse_stack()
                                        opcode = iptr->opc;
                                        iptr->target = NULL;
 
+                                       /* DEBUG XXX */ /*  dolog("p:%04d op: %s",iptr-instr,icmd_names[opcode]); */
+
 #ifdef USEBUILTINTABLE
                                        {
+#if 0
                                                stdopdescriptor *breplace;
                                                breplace = find_builtin(opcode);
 
+                                               if (breplace && opcode == breplace->opcode) {
+                                                       iptr[0].opc = breplace->icmd;
+                                                       iptr[0].op1 = breplace->type_d;
+                                                       iptr[0].val.a = breplace->builtin;
+                                                       isleafmethod = false;
+                                                       switch (breplace->icmd) {
+                                                       case ICMD_BUILTIN1:
+                                                               goto builtin1;
+                                                       case ICMD_BUILTIN2:
+                                                               goto builtin2;
+                                                       }
+                                               }
+#endif
+                                               builtin_descriptor *breplace;
+                                               breplace = find_builtin(opcode);
+
                                                if (breplace && opcode == breplace->opcode) {
                                                        iptr[0].opc = breplace->icmd;
                                                        iptr[0].op1 = breplace->type_d;
@@ -598,6 +643,9 @@ void analyse_stack()
 #if SUPPORT_LONG_MUL
                                                        case ICMD_LMUL:
                                                                iptr[0].opc = ICMD_LMULCONST;
+#if defined(__I386__)
+                                                               method_uses_edx = true;
+#endif
                                                                goto icmd_lconst_tail;
 #endif
 #if SUPPORT_LONG_DIV
@@ -806,8 +854,11 @@ void analyse_stack()
 
                                                /* pop 2 push 1 */
 
-                                       case ICMD_IALOAD:
                                        case ICMD_LALOAD:
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
+                                       case ICMD_IALOAD:
                                        case ICMD_FALOAD:
                                        case ICMD_DALOAD:
                                        case ICMD_AALOAD:
@@ -858,6 +909,7 @@ void analyse_stack()
                                        case ICMD_DSTORE:
                                        case ICMD_ASTORE:
                                        icmd_store:
+                                               REQUIRE_1;
 
                                        i = opcode - ICMD_ISTORE;
                                        locals[iptr->op1][i].type = i;
@@ -895,15 +947,19 @@ void analyse_stack()
                                        /* pop 3 push 0 */
 
                                        case ICMD_IASTORE:
+                                       case ICMD_AASTORE:
                                        case ICMD_LASTORE:
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
                                        case ICMD_FASTORE:
                                        case ICMD_DASTORE:
-                                       case ICMD_AASTORE:
                                                COUNT(count_check_null);
                                                COUNT(count_check_bound);
                                                COUNT(count_pcmd_mem);
                                                OP3TIA_0(opcode-ICMD_IASTORE);
                                                break;
+
                                        case ICMD_BASTORE:
                                        case ICMD_CASTORE:
                                        case ICMD_SASTORE:
@@ -911,6 +967,9 @@ void analyse_stack()
                                                COUNT(count_check_bound);
                                                COUNT(count_pcmd_mem);
                                                OP3TIA_0(TYPE_INT);
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
                                                break;
 
                                                /* pop 1 push 0 */
@@ -1142,6 +1201,7 @@ void analyse_stack()
                                                break;
 
                                        case ICMD_POP2:
+                                               REQUIRE_1;
                                                if (! IS_2_WORD_TYPE(curstack->type)) {
                                                        OP1_0ANY;                /* second pop */
                                                }
@@ -1158,11 +1218,13 @@ void analyse_stack()
                                                break;
 
                                        case ICMD_DUP2:
+                                               REQUIRE_1;
                                                if (IS_2_WORD_TYPE(curstack->type)) {
                                                        iptr->opc = ICMD_DUP;
                                                        DUP;
                                                }
                                                else {
+                                                       REQUIRE_2;
                                                        copy = curstack;
                                                        NEWSTACK(copy->prev->type, copy->prev->varkind,
                                                                         copy->prev->varnum);
@@ -1180,6 +1242,7 @@ void analyse_stack()
                                                break;
 
                                        case ICMD_DUP2_X1:
+                                               REQUIRE_2;
                                                if (IS_2_WORD_TYPE(curstack->type)) {
                                                        iptr->opc = ICMD_DUP_X1;
                                                        DUP_X1;
@@ -1192,6 +1255,7 @@ void analyse_stack()
                                                /* pop 3 push 4 dup */
                                                
                                        case ICMD_DUP_X2:
+                                               REQUIRE_2;
                                                if (IS_2_WORD_TYPE(curstack->prev->type)) {
                                                        iptr->opc = ICMD_DUP_X1;
                                                        DUP_X1;
@@ -1202,6 +1266,7 @@ void analyse_stack()
                                                break;
 
                                        case ICMD_DUP2_X2:
+                                               REQUIRE_2;
                                                if (IS_2_WORD_TYPE(curstack->type)) {
                                                        if (IS_2_WORD_TYPE(curstack->prev->type)) {
                                                                iptr->opc = ICMD_DUP_X1;
@@ -1212,7 +1277,8 @@ void analyse_stack()
                                                                DUP_X2;
                                                        }
                                                }
-                                               else
+                                               else {
+                                                       REQUIRE_3;
                                                        if (IS_2_WORD_TYPE(curstack->prev->prev->type)) {
                                                                iptr->opc = ICMD_DUP2_X1;
                                                                DUP2_X1;
@@ -1220,6 +1286,7 @@ void analyse_stack()
                                                        else {
                                                                DUP2_X2;
                                                        }
+                                               }
                                                break;
 
                                                /* pop 2 push 2 swap */
@@ -1234,7 +1301,7 @@ void analyse_stack()
 #if !SUPPORT_DIVISION
                                                iptr[0].opc = ICMD_BUILTIN2;
                                                iptr[0].op1 = TYPE_INT;
-                                               iptr[0].val.a = (functionptr) asm_builtin_idiv;
+                                               iptr[0].val.a = BUILTIN_idiv;
                                                isleafmethod = false;
                                                goto builtin2;
 #endif
@@ -1243,18 +1310,23 @@ void analyse_stack()
 #if !SUPPORT_DIVISION
                                                iptr[0].opc = ICMD_BUILTIN2;
                                                iptr[0].op1 = TYPE_INT;
-                                               iptr[0].val.a = (functionptr) asm_builtin_irem;
+                                               iptr[0].val.a = BUILTIN_irem;
                                                isleafmethod = false;
                                                goto builtin2;
 #endif
-
-                                       case ICMD_IADD:
-                                       case ICMD_ISUB:
-                                       case ICMD_IMUL:
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
 
                                        case ICMD_ISHL:
                                        case ICMD_ISHR:
                                        case ICMD_IUSHR:
+#if defined(__I386__)
+                                               method_uses_ecx = true;
+#endif
+                                       case ICMD_IADD:
+                                       case ICMD_ISUB:
+                                       case ICMD_IMUL:
                                        case ICMD_IAND:
                                        case ICMD_IOR:
                                        case ICMD_IXOR:
@@ -1266,7 +1338,7 @@ void analyse_stack()
 #if !(SUPPORT_DIVISION && SUPPORT_LONG && SUPPORT_LONG_DIV)
                                                iptr[0].opc = ICMD_BUILTIN2;
                                                iptr[0].op1 = TYPE_LNG;
-                                               iptr[0].val.a = (functionptr) asm_builtin_ldiv;
+                                               iptr[0].val.a = BUILTIN_ldiv;
                                                isleafmethod = false;
                                                goto builtin2;
 #endif
@@ -1275,18 +1347,21 @@ void analyse_stack()
 #if !(SUPPORT_DIVISION && SUPPORT_LONG && SUPPORT_LONG_DIV)
                                                iptr[0].opc = ICMD_BUILTIN2;
                                                iptr[0].op1 = TYPE_LNG;
-                                               iptr[0].val.a = (functionptr) asm_builtin_lrem;
+                                               iptr[0].val.a = BUILTIN_lrem;
                                                isleafmethod = false;
                                                goto builtin2;
 #endif
 
+                                       case ICMD_LMUL:
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
                                        case ICMD_LADD:
                                        case ICMD_LSUB:
-                                       case ICMD_LMUL:
-
                                        case ICMD_LOR:
                                        case ICMD_LAND:
                                        case ICMD_LXOR:
+                                               /* XXX DEBUG */ /*dolog("OP2_1(TYPE_LNG)"); */
                                                COUNT(count_pcmd_op);
                                                OP2_1(TYPE_LNG);
                                                break;
@@ -1296,6 +1371,10 @@ void analyse_stack()
                                        case ICMD_LUSHR:
                                                COUNT(count_pcmd_op);
                                                OP2IT_1(TYPE_LNG);
+#if defined(__I386__)
+                                               method_uses_ecx = true;
+                                               method_uses_edx = true;
+#endif
                                                break;
 
                                        case ICMD_FADD:
@@ -1395,6 +1474,9 @@ void analyse_stack()
                                        case ICMD_I2L:
                                                COUNT(count_pcmd_op);
                                                OP1_1(TYPE_INT, TYPE_LNG);
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
                                                break;
                                        case ICMD_I2F:
                                                COUNT(count_pcmd_op);
@@ -1423,6 +1505,9 @@ void analyse_stack()
                                        case ICMD_F2L:
                                                COUNT(count_pcmd_op);
                                                OP1_1(TYPE_FLT, TYPE_LNG);
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
                                                break;
                                        case ICMD_F2D:
                                                COUNT(count_pcmd_op);
@@ -1435,6 +1520,9 @@ void analyse_stack()
                                        case ICMD_D2L:
                                                COUNT(count_pcmd_op);
                                                OP1_1(TYPE_DBL, TYPE_LNG);
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
                                                break;
                                        case ICMD_D2F:
                                                COUNT(count_pcmd_op);
@@ -1443,10 +1531,16 @@ void analyse_stack()
 
                                        case ICMD_CHECKCAST:
                                                OP1_1(TYPE_ADR, TYPE_ADR);
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
                                                break;
 
-                                       case ICMD_ARRAYLENGTH:
                                        case ICMD_INSTANCEOF:
+#if defined(__I386__)
+                                               method_uses_edx = true;
+#endif
+                                       case ICMD_ARRAYLENGTH:
                                                OP1_1(TYPE_ADR, TYPE_INT);
                                                break;
 
@@ -1478,6 +1572,12 @@ void analyse_stack()
 
                                                iptr[0].target = (void *) tbptr;
 
+                                               /* XXX This is a dirty hack. The typechecker
+                                                * needs it because the OP1_0ANY below
+                                                * overwrites iptr->dst.
+                                                */
+                                               iptr->val.a = (void*) iptr->dst;
+
                                                tbptr->type=BBTYPE_SBR;
                                                MARKREACHED(tbptr, copy);
                                                OP1_0ANY;
@@ -1497,6 +1597,7 @@ void analyse_stack()
                                                        i = iptr->op1;
                                                        if (i > arguments_num)
                                                                arguments_num = i;
+                                                       REQUIRE(i);
 #if defined(__X86_64__)
                                                        {
                                                                int iarg = 0;
@@ -1559,6 +1660,8 @@ void analyse_stack()
                                                }
 
                                        case ICMD_BUILTIN3:
+                                               /* XXX DEBUG */ /*dolog("builtin3");*/
+                                               REQUIRE_3;
                                                if (! (curstack->flags & SAVEDVAR)) {
                                                        curstack->varkind = ARGVAR;
                                                        curstack->varnum = 2;
@@ -1570,6 +1673,8 @@ void analyse_stack()
 
                                        case ICMD_BUILTIN2:
                                        builtin2:
+                                               REQUIRE_2;
+                                               /* XXX DEBUG */ /*dolog("builtin2");*/
                                        if (!(curstack->flags & SAVEDVAR)) {
                                                curstack->varkind = ARGVAR;
                                                curstack->varnum = 1;
@@ -1581,6 +1686,8 @@ void analyse_stack()
 
                                        case ICMD_BUILTIN1:
                                        builtin1:
+                                               REQUIRE_1;
+                                               /* XXX DEBUG */ /*dolog("builtin1");*/
                                        if (!(curstack->flags & SAVEDVAR)) {
                                                curstack->varkind = ARGVAR;
                                                curstack->varnum = 0;
@@ -1600,6 +1707,7 @@ void analyse_stack()
 
                                        case ICMD_MULTIANEWARRAY:
                                                i = iptr->op1;
+                                               REQUIRE(i);
                                                if ((i + intreg_argnum) > arguments_num)
                                                        arguments_num = i + intreg_argnum;
                                                copy = curstack;
@@ -1632,6 +1740,7 @@ void analyse_stack()
                                        case ICMD_READONLY_ARG+3:
                                        case ICMD_READONLY_ARG+4:
 
+                                               REQUIRE_1;
                                                if (curstack->varkind == LOCALVAR) {
                                                        i = curstack->varnum;
                                                        argren[iptr->op1] = i;
@@ -1646,6 +1755,7 @@ void analyse_stack()
                                                printf("ICMD %d at %d\n", iptr->opc, (int)(iptr-instr));
                                                panic("Missing ICMD code during stack analysis");
                                        } /* switch */
+                                       /* XXX DEBUG */ /*dolog("iptr++");*/
                                        iptr++;
                                } /* while instructions */
                                bptr->outstack = curstack;
@@ -1734,7 +1844,7 @@ void analyse_stack()
 }
 
 
-static void print_stack(stackptr s)
+void icmd_print_stack(stackptr s)
 {
        int i, j;
        stackptr t;
@@ -1751,15 +1861,17 @@ static void print_stack(stackptr s)
                printf("    ");
        while (s) {
                j--;
+               /* XXX remove */ /* printf("(%d)",s->flags); fflush(stdout); */
                if (s->flags & SAVEDVAR)
                        switch (s->varkind) {
                        case TEMPVAR:
                                if (s->flags & INMEMORY)
-                                       printf(" M%02d", s->regoff);
+                                       printf((regs_ok) ? " M%02d" : " M??", s->regoff);
                                else if ((s->type == TYPE_FLT) || (s->type == TYPE_DBL))
-                                       printf(" F%02d", s->regoff);
-                               else
-                                       printf(" %3s", regs[s->regoff]);
+                                       printf((regs_ok) ? " F%02d" : " F??", s->regoff);
+                               else {
+                                       if (regs_ok) printf(" %3s",regs[s->regoff]); else printf(" ???");
+                               }
                                break;
                        case STACKVAR:
                                printf(" I%02d", s->varnum);
@@ -1777,11 +1889,12 @@ static void print_stack(stackptr s)
                        switch (s->varkind) {
                        case TEMPVAR:
                                if (s->flags & INMEMORY)
-                                       printf(" m%02d", s->regoff);
+                                       printf((regs_ok) ? " m%02d" : " m??", s->regoff);
                                else if ((s->type == TYPE_FLT) || (s->type == TYPE_DBL))
-                                       printf(" f%02d", s->regoff);
-                               else
-                                       printf(" %3s", regs[s->regoff]);
+                                       printf((regs_ok) ? " f%02d" : " f??", s->regoff);
+                               else {
+                                       if (regs_ok) printf(" %3s",regs[s->regoff]); else printf(" ???");
+                               }
                                break;
                        case STACKVAR:
                                printf(" i%02d", s->varnum);
@@ -1851,12 +1964,12 @@ static void print_reg(stackptr s) {
 #endif
 
 
-static char *builtin_name(functionptr bptr)
+char *icmd_builtin_name(functionptr bptr)
 {
        builtin_descriptor *bdesc = builtin_desc;
-       while ((bdesc->bptr != NULL) && (bdesc->bptr != bptr))
+       while ((bdesc->opcode != 0) && (bdesc->builtin != bptr))
                bdesc++;
-       return bdesc->name;
+       return (bdesc->opcode) ? bdesc->name : "<NOT IN TABLE>";
 }
 
 
@@ -1902,11 +2015,12 @@ void show_icmd_method()
                        if (locals[i][j].type >= 0) {
                                printf("   (%s) ", jit_type[j]);
                                if (locals[i][j].flags & INMEMORY)
-                                       printf("m%2d", locals[i][j].regoff);
+                                       printf((regs_ok) ? "m%2d" : "m??", locals[i][j].regoff);
                                else if ((j == TYPE_FLT) || (j == TYPE_DBL))
-                                       printf("f%02d", locals[i][j].regoff);
-                               else
-                                       printf("%3s", regs[locals[i][j].regoff]);
+                                       printf((regs_ok) ? "f%02d" : "f??", locals[i][j].regoff);
+                               else {
+                                       if (regs_ok) printf("%3s",regs[locals[i][j].regoff]); else printf("???");
+                               }
                        }
                printf("\n");
        }
@@ -1923,19 +2037,21 @@ void show_icmd_method()
                                        printf("   (%s) ", jit_type[j]);
                                        if (interfaces[i][j].flags & SAVEDVAR) {
                                                if (interfaces[i][j].flags & INMEMORY)
-                                                       printf("M%2d", interfaces[i][j].regoff);
+                                                       printf((regs_ok) ? "M%2d" : "M??", interfaces[i][j].regoff);
                                                else if ((j == TYPE_FLT) || (j == TYPE_DBL))
-                                                       printf("F%02d", interfaces[i][j].regoff);
-                                               else
-                                                       printf("%3s", regs[interfaces[i][j].regoff]);
+                                                       printf((regs_ok) ? "F%02d" : "F??", interfaces[i][j].regoff);
+                                               else {
+                                                       if (regs_ok) printf("%3s",regs[interfaces[i][j].regoff]); else printf("???");
+                                               }
                                        }
                                        else {
                                                if (interfaces[i][j].flags & INMEMORY)
-                                                       printf("m%2d", interfaces[i][j].regoff);
+                                                       printf((regs_ok) ? "m%2d" : "m??", interfaces[i][j].regoff);
                                                else if ((j == TYPE_FLT) || (j == TYPE_DBL))
-                                                       printf("f%02d", interfaces[i][j].regoff);
-                                               else
-                                                       printf("%3s", regs[interfaces[i][j].regoff]);
+                                                       printf((regs_ok) ? "f%02d" : "f??", interfaces[i][j].regoff);
+                                               else {
+                                                       if (regs_ok) printf("%3s",regs[interfaces[i][j].regoff]); else printf("???");
+                                               }
                                        }
                                }
                        printf("\n");
@@ -1966,308 +2082,394 @@ void show_icmd_method()
 
        
        for (bptr = block; bptr != NULL; bptr = bptr->next) {
-               if (bptr->flags != BBDELETED) {
-                       deadcode = bptr->flags <= BBREACHED;
+               show_icmd_block(bptr);
+       }
+}
+
+
+void show_icmd_block(basicblock *bptr)
+{
+       int i, j;
+       int deadcode;
+       s4  *s4ptr;
+       instruction *iptr;
+
+       if (bptr->flags != BBDELETED) {
+               deadcode = bptr->flags <= BBREACHED;
+               printf("[");
+               if (deadcode)
+                       for (j = method->maxstack; j > 0; j--)
+                               printf(" ?  ");
+               else
+                       icmd_print_stack(bptr->instack);
+               printf("] L%03d(%d - %d) flags=%d:\n", bptr->debug_nr, bptr->icount, bptr->pre_count,bptr->flags);
+               iptr = bptr->iinstr;
+
+               for (i=0; i < bptr->icount; i++, iptr++) {
                        printf("[");
-                       if (deadcode)
-                               for (j = maxstack; j > 0; j--)
+                       if (deadcode) {
+                               for (j = method->maxstack; j > 0; j--)
                                        printf(" ?  ");
+                       }
                        else
-                               print_stack(bptr->instack);
-                       printf("] L%03d(%d - %d):\n", bptr->debug_nr, bptr->icount, bptr->pre_count);
-                       iptr = bptr->iinstr;
-
-                       for (i=0; i < bptr->icount; i++, iptr++) {
-                               printf("[");
-                               if (deadcode) {
-                                       for (j = maxstack; j > 0; j--)
-                                               printf(" ?  ");
+                               icmd_print_stack(iptr->dst);
+                       printf("]     %4d  ", i);
+                       /* XXX remove */ /*fflush(stdout);*/
+                       show_icmd(iptr,deadcode);
+                       printf("\n");
+               }
+
+               if (showdisassemble && (!deadcode)) {
+#if defined(__I386__) || defined(__X86_64__)
+                       u1 *u1ptr;
+                       int a;
+
+                       printf("\n");
+                       i = bptr->mpc;
+                       u1ptr = method->mcode + dseglen + i;
+
+                       if (bptr->next != NULL) {
+                               for (; i < bptr->next->mpc; i++, u1ptr++) {
+                                       a = disassinstr(u1ptr, i);
+                                       i += a;
+                                       u1ptr += a;
                                }
-                               else
-                                       print_stack(iptr->dst);
-                               printf("]     %4d  %s", i, icmd_names[iptr->opc]);
-                               switch ((int) iptr->opc) {
-                               case ICMD_IADDCONST:
-                               case ICMD_ISUBCONST:
-                               case ICMD_IMULCONST:
-                               case ICMD_IDIVPOW2:
-                               case ICMD_IREMPOW2:
-                               case ICMD_IREM0X10001:
-                               case ICMD_IANDCONST:
-                               case ICMD_IORCONST:
-                               case ICMD_IXORCONST:
-                               case ICMD_ISHLCONST:
-                               case ICMD_ISHRCONST:
-                               case ICMD_IUSHRCONST:
-                               case ICMD_LSHLCONST:
-                               case ICMD_LSHRCONST:
-                               case ICMD_LUSHRCONST:
-                               case ICMD_ICONST:
-                               case ICMD_ELSE_ICONST:
-                               case ICMD_IFEQ_ICONST:
-                               case ICMD_IFNE_ICONST:
-                               case ICMD_IFLT_ICONST:
-                               case ICMD_IFGE_ICONST:
-                               case ICMD_IFGT_ICONST:
-                               case ICMD_IFLE_ICONST:
-                                       printf(" %d", iptr->val.i);
-                                       break;
-                               case ICMD_LADDCONST:
-                               case ICMD_LSUBCONST:
-                               case ICMD_LMULCONST:
-                               case ICMD_LDIVPOW2:
-                               case ICMD_LREMPOW2:
-                               case ICMD_LANDCONST:
-                               case ICMD_LORCONST:
-                               case ICMD_LXORCONST:
-                               case ICMD_LCONST:
-#if defined(__I386__)
-                                       printf(" %lld", iptr->val.l);
+                               printf("\n");
+
+                       } else {
+                               for (; u1ptr < (u1 *) (method->mcode + method->mcodelength); i++, u1ptr++) {
+                                       a = disassinstr(u1ptr, i); 
+                                       i += a;
+                                       u1ptr += a;
+                               }
+                               printf("\n");
+                       }
 #else
-                                       printf(" %ld", iptr->val.l);
-#endif
-                                       break;
-                               case ICMD_FCONST:
-                                       printf(" %f", iptr->val.f);
-                                       break;
-                               case ICMD_DCONST:
-                                       printf(" %f", iptr->val.d);
-                                       break;
-                               case ICMD_ACONST:
-                                       printf(" %p", iptr->val.a);
-                                       break;
-                               case ICMD_GETFIELD:
-                               case ICMD_PUTFIELD:
-                                       printf(" %d,", ((fieldinfo *) iptr->val.a)->offset);
-                               case ICMD_PUTSTATIC:
-                               case ICMD_GETSTATIC:
-                                       printf(" ");
-                                       utf_fprint(stdout,
-                                                          ((fieldinfo *) iptr->val.a)->name);
-                                       break;
-                               case ICMD_IINC:
-                                       printf(" %d + %d", iptr->op1, iptr->val.i);
-                                       break;
+                       printf("\n");
+                       i = bptr->mpc;
+                       s4ptr = (s4 *) (method->mcode + dseglen + i);
 
-                           case ICMD_IASTORE:
-                           case ICMD_SASTORE:
-                           case ICMD_BASTORE:
-                           case ICMD_CASTORE:
-                           case ICMD_LASTORE:
-                           case ICMD_DASTORE:
-                           case ICMD_FASTORE:
-                           case ICMD_AASTORE:
-
-                           case ICMD_IALOAD:
-                           case ICMD_SALOAD:
-                           case ICMD_BALOAD:
-                           case ICMD_CALOAD:
-                           case ICMD_LALOAD:
-                           case ICMD_DALOAD:
-                           case ICMD_FALOAD:
-                           case ICMD_AALOAD:
-                                       if (iptr->op1 != 0)
-                                               printf("(opt.)");
-                                       break;
+                       if (bptr->next != NULL) {
+                               for (; i < bptr->next->mpc; i += 4, s4ptr++) {
+                                       disassinstr(*s4ptr, i); 
+                               }
+                               printf("\n");
 
-                               case ICMD_RET:
-                               case ICMD_ILOAD:
-                               case ICMD_LLOAD:
-                               case ICMD_FLOAD:
-                               case ICMD_DLOAD:
-                               case ICMD_ALOAD:
-                               case ICMD_ISTORE:
-                               case ICMD_LSTORE:
-                               case ICMD_FSTORE:
-                               case ICMD_DSTORE:
-                               case ICMD_ASTORE:
-                                       printf(" %d", iptr->op1);
-                                       break;
-                               case ICMD_NEW:
-                                       printf(" ");
-                                       utf_fprint(stdout,
-                                                          ((classinfo *) iptr->val.a)->name);
-                                       break;
-                               case ICMD_NEWARRAY:
-                                       switch (iptr->op1) {
-                                       case 4:
-                                               printf(" boolean");
-                                               break;
-                                       case 5:
-                                               printf(" char");
-                                               break;
-                                       case 6:
-                                               printf(" float");
-                                               break;
-                                       case 7:
-                                               printf(" double");
-                                               break;
-                                       case 8:
-                                               printf(" byte");
-                                               break;
-                                       case 9:
-                                               printf(" short");
-                                               break;
-                                       case 10:
-                                               printf(" int");
-                                               break;
-                                       case 11:
-                                               printf(" long");
-                                               break;
-                                       }
-                                       break;
-                               case ICMD_ANEWARRAY:
-                                       if (iptr->op1) {
-                                               printf(" ");
-                                               utf_fprint(stdout,
-                                                                  ((classinfo *) iptr->val.a)->name);
-                                       }
-                                       break;
-                               case ICMD_CHECKCAST:
-                               case ICMD_INSTANCEOF:
-                                       if (iptr->op1) {
-                                               classinfo *c = iptr->val.a;
-                                               if (c->flags & ACC_INTERFACE)
-                                                       printf(" (INTERFACE) ");
-                                               else
-                                                       printf(" (CLASS,%3d) ", c->vftbl->diffval);
-                                               utf_fprint(stdout, c->name);
-                                       }
-                                       break;
-                               case ICMD_BUILTIN3:
-                               case ICMD_BUILTIN2:
-                               case ICMD_BUILTIN1:
-                                       printf(" %s", builtin_name((functionptr) iptr->val.a));
-                                       break;
-                               case ICMD_INVOKEVIRTUAL:
-                               case ICMD_INVOKESPECIAL:
-                               case ICMD_INVOKESTATIC:
-                               case ICMD_INVOKEINTERFACE:
-                                       printf(" ");
-                                       utf_fprint(stdout,
-                                                          ((methodinfo *) iptr->val.a)->class->name);
-                                       printf(".");
-                                       utf_fprint(stdout,
-                                                          ((methodinfo *) iptr->val.a)->name);
-                                       break;
-                               case ICMD_IFEQ:
-                               case ICMD_IFNE:
-                               case ICMD_IFLT:
-                               case ICMD_IFGE:
-                               case ICMD_IFGT:
-                               case ICMD_IFLE:
-                                       printf("(%d) L%03d", iptr->val.i, ((basicblock *) iptr->target)->debug_nr);
-                                       break;
-                               case ICMD_IF_LEQ:
-                               case ICMD_IF_LNE:
-                               case ICMD_IF_LLT:
-                               case ICMD_IF_LGE:
-                               case ICMD_IF_LGT:
-                               case ICMD_IF_LLE:
-                                       printf("(%lld) L%03d", iptr->val.l, ((basicblock *) iptr->target)->debug_nr);
-                                       break;
-                               case ICMD_JSR:
-                               case ICMD_GOTO:
-                               case ICMD_IFNULL:
-                               case ICMD_IFNONNULL:
-                               case ICMD_IF_ICMPEQ:
-                               case ICMD_IF_ICMPNE:
-                               case ICMD_IF_ICMPLT:
-                               case ICMD_IF_ICMPGE:
-                               case ICMD_IF_ICMPGT:
-                               case ICMD_IF_ICMPLE:
-                               case ICMD_IF_LCMPEQ:
-                               case ICMD_IF_LCMPNE:
-                               case ICMD_IF_LCMPLT:
-                               case ICMD_IF_LCMPGE:
-                               case ICMD_IF_LCMPGT:
-                               case ICMD_IF_LCMPLE:
-                               case ICMD_IF_ACMPEQ:
-                               case ICMD_IF_ACMPNE:
-                                       printf(" L%03d", ((basicblock *) iptr->target)->debug_nr);
-                                       break;
-                               case ICMD_TABLESWITCH:
+                       } else {
+                               for (; s4ptr < (s4 *) (method->mcode + method->mcodelength); i += 4, s4ptr++) {
+                                       disassinstr(*s4ptr, i); 
+                               }
+                               printf("\n");
+                       }
+#endif
+               }
+       }
+}
 
-                                       s4ptr = iptr->val.a;
-                                       tptr = (void **) iptr->target;
 
-                                       printf(" L%03d;", ((basicblock *) *tptr)->debug_nr); 
-                                       /* default */
+void show_icmd(instruction *iptr,bool deadcode)
+{
+       int j;
+       s4  *s4ptr;
+       void **tptr;
+       
+       printf("%s", icmd_names[iptr->opc]);
+
+       switch ((int) iptr->opc) {
+       case ICMD_IADDCONST:
+       case ICMD_ISUBCONST:
+       case ICMD_IMULCONST:
+       case ICMD_IDIVPOW2:
+       case ICMD_IREMPOW2:
+       case ICMD_IREM0X10001:
+       case ICMD_IANDCONST:
+       case ICMD_IORCONST:
+       case ICMD_IXORCONST:
+       case ICMD_ISHLCONST:
+       case ICMD_ISHRCONST:
+       case ICMD_IUSHRCONST:
+       case ICMD_LSHLCONST:
+       case ICMD_LSHRCONST:
+       case ICMD_LUSHRCONST:
+       case ICMD_ICONST:
+       case ICMD_ELSE_ICONST:
+       case ICMD_IFEQ_ICONST:
+       case ICMD_IFNE_ICONST:
+       case ICMD_IFLT_ICONST:
+       case ICMD_IFGE_ICONST:
+       case ICMD_IFGT_ICONST:
+       case ICMD_IFLE_ICONST:
+               printf(" %d", iptr->val.i);
+               break;
+
+       case ICMD_LADDCONST:
+       case ICMD_LSUBCONST:
+       case ICMD_LMULCONST:
+       case ICMD_LDIVPOW2:
+       case ICMD_LREMPOW2:
+       case ICMD_LANDCONST:
+       case ICMD_LORCONST:
+       case ICMD_LXORCONST:
+       case ICMD_LCONST:
+#if defined(__I386__)
+               printf(" %lld", iptr->val.l);
+#else
+               printf(" %ld", iptr->val.l);
+#endif
+               break;
+
+       case ICMD_FCONST:
+               printf(" %f", iptr->val.f);
+               break;
+
+       case ICMD_DCONST:
+               printf(" %f", iptr->val.d);
+               break;
+
+       case ICMD_ACONST:
+               printf(" %p", iptr->val.a);
+               break;
+
+       case ICMD_GETFIELD:
+       case ICMD_PUTFIELD:
+               printf(" %d,", ((fieldinfo *) iptr->val.a)->offset);
+       case ICMD_PUTSTATIC:
+       case ICMD_GETSTATIC:
+               printf(" ");
+               utf_fprint(stdout,
+                                  ((fieldinfo *) iptr->val.a)->class->name);
+               printf(".");
+               utf_fprint(stdout,
+                                  ((fieldinfo *) iptr->val.a)->name);
+               printf(" (type ");
+               utf_fprint(stdout,
+                                  ((fieldinfo *) iptr->val.a)->descriptor);
+               printf(")");
+               break;
+
+       case ICMD_IINC:
+               printf(" %d + %d", iptr->op1, iptr->val.i);
+               break;
+
+       case ICMD_IASTORE:
+       case ICMD_SASTORE:
+       case ICMD_BASTORE:
+       case ICMD_CASTORE:
+       case ICMD_LASTORE:
+       case ICMD_DASTORE:
+       case ICMD_FASTORE:
+       case ICMD_AASTORE:
+
+       case ICMD_IALOAD:
+       case ICMD_SALOAD:
+       case ICMD_BALOAD:
+       case ICMD_CALOAD:
+       case ICMD_LALOAD:
+       case ICMD_DALOAD:
+       case ICMD_FALOAD:
+       case ICMD_AALOAD:
+               if (iptr->op1 != 0)
+                       printf("(opt.)");
+               break;
+
+       case ICMD_RET:
+       case ICMD_ILOAD:
+       case ICMD_LLOAD:
+       case ICMD_FLOAD:
+       case ICMD_DLOAD:
+       case ICMD_ALOAD:
+       case ICMD_ISTORE:
+       case ICMD_LSTORE:
+       case ICMD_FSTORE:
+       case ICMD_DSTORE:
+       case ICMD_ASTORE:
+               printf(" %d", iptr->op1);
+               break;
+
+       case ICMD_NEW:
+               printf(" ");
+               utf_fprint(stdout,
+                                  ((classinfo *) iptr->val.a)->name);
+               break;
+
+       case ICMD_NEWARRAY:
+               switch (iptr->op1) {
+               case 4:
+                       printf(" boolean");
+                       break;
+               case 5:
+                       printf(" char");
+                       break;
+               case 6:
+                       printf(" float");
+                       break;
+               case 7:
+                       printf(" double");
+                       break;
+               case 8:
+                       printf(" byte");
+                       break;
+               case 9:
+                       printf(" short");
+                       break;
+               case 10:
+                       printf(" int");
+                       break;
+               case 11:
+                       printf(" long");
+                       break;
+               }
+               break;
 
-                                       s4ptr++;
-                                       tptr++;
+       case ICMD_ANEWARRAY:
+               if (iptr->op1) {
+                       printf(" ");
+                       utf_fprint(stdout,
+                                          ((classinfo *) iptr->val.a)->name);
+               }
+               break;
+
+       case ICMD_MULTIANEWARRAY:
+               {
+                       vftbl *vft;
+                       printf(" %d ",iptr->op1);
+                       vft = (vftbl *)iptr->val.a;
+                       if (vft)
+                               utf_fprint(stdout,vft->class->name);
+                       else
+                               printf("<null>");
+               }
+               break;
+
+       case ICMD_CHECKCAST:
+       case ICMD_INSTANCEOF:
+               if (iptr->op1) {
+                       classinfo *c = iptr->val.a;
+                       if (c->flags & ACC_INTERFACE)
+                               printf(" (INTERFACE) ");
+                       else
+                               printf(" (CLASS,%3d) ", c->vftbl->diffval);
+                       utf_fprint(stdout, c->name);
+               }
+               break;
+
+       case ICMD_BUILTIN3:
+       case ICMD_BUILTIN2:
+       case ICMD_BUILTIN1:
+               printf(" %s", icmd_builtin_name((functionptr) iptr->val.a));
+               break;
+
+       case ICMD_INVOKEVIRTUAL:
+       case ICMD_INVOKESPECIAL:
+       case ICMD_INVOKESTATIC:
+       case ICMD_INVOKEINTERFACE:
+               printf(" ");
+               utf_fprint(stdout,
+                                  ((methodinfo *) iptr->val.a)->class->name);
+               printf(".");
+               utf_fprint(stdout,
+                                  ((methodinfo *) iptr->val.a)->name);
+               break;
+
+       case ICMD_IFEQ:
+       case ICMD_IFNE:
+       case ICMD_IFLT:
+       case ICMD_IFGE:
+       case ICMD_IFGT:
+       case ICMD_IFLE:
+               if (deadcode || !iptr->target)
+                       printf("(%d) op1=%d", iptr->val.i, iptr->op1);
+               else
+                       printf("(%d) L%03d", iptr->val.i, ((basicblock *) iptr->target)->debug_nr);
+               break;
+
+       case ICMD_IF_LEQ:
+       case ICMD_IF_LNE:
+       case ICMD_IF_LLT:
+       case ICMD_IF_LGE:
+       case ICMD_IF_LGT:
+       case ICMD_IF_LLE:
+               if (deadcode || !iptr->target)
+                       printf("(%lld) op1=%d", iptr->val.l, iptr->op1);
+               else
+                       printf("(%lld) L%03d", iptr->val.l, ((basicblock *) iptr->target)->debug_nr);
+               break;
+
+       case ICMD_JSR:
+       case ICMD_GOTO:
+       case ICMD_IFNULL:
+       case ICMD_IFNONNULL:
+       case ICMD_IF_ICMPEQ:
+       case ICMD_IF_ICMPNE:
+       case ICMD_IF_ICMPLT:
+       case ICMD_IF_ICMPGE:
+       case ICMD_IF_ICMPGT:
+       case ICMD_IF_ICMPLE:
+       case ICMD_IF_LCMPEQ:
+       case ICMD_IF_LCMPNE:
+       case ICMD_IF_LCMPLT:
+       case ICMD_IF_LCMPGE:
+       case ICMD_IF_LCMPGT:
+       case ICMD_IF_LCMPLE:
+       case ICMD_IF_ACMPEQ:
+       case ICMD_IF_ACMPNE:
+               if (deadcode || !iptr->target)
+                       printf(" op1=%d", iptr->op1);
+               else
+                       printf(" L%03d", ((basicblock *) iptr->target)->debug_nr);
+               break;
 
-                                       j = *s4ptr++;                               /* low     */
-                                       j = *s4ptr++ - j;                           /* high    */
-                                       while (j >= 0) {
-                                               printf(" L%03d", ((basicblock *) *tptr)->debug_nr);
-                                               tptr++;
-                                               j--;
-                                       }
-                                       break;
-                               case ICMD_LOOKUPSWITCH:
-                                       s4ptr = iptr->val.a;
-                                       tptr = (void **) iptr->target;
+       case ICMD_TABLESWITCH:
+               s4ptr = (s4*)iptr->val.a;
 
-                                       printf(" L%03d", ((basicblock *) *tptr)->debug_nr); 
-                                       s4ptr++;                                         /* default */
-                                       j = *s4ptr;                                      /* count   */
-                                       tptr++;
+               if (deadcode || !iptr->target) {
+                       printf(" %d;", *s4ptr);
+               }
+               else {
+                       tptr = (void **) iptr->target;
+                       printf(" L%03d;", ((basicblock *) *tptr)->debug_nr); 
+                       tptr++;
+               }
 
-                                       while (--j >= 0) {
-                                               printf(" L%03d", ((basicblock *) *tptr)->debug_nr);
-                                               tptr++;
-                                       }
-                                       break;
-                               }
-                               printf("\n");
+               s4ptr++;         /* skip default */
+               j = *s4ptr++;                               /* low     */
+               j = *s4ptr++ - j;                           /* high    */
+               while (j >= 0) {
+                       if (deadcode || !*tptr)
+                               printf(" %d", *s4ptr++);
+                       else {
+                               printf(" L%03d", ((basicblock *) *tptr)->debug_nr);
+                               tptr++;
                        }
+                       j--;
+               }
+               break;
 
-                       if (showdisassemble && (!deadcode)) {
-#if defined(__I386__) || defined(__X86_64__)
-                               u1 *u1ptr;
-                               int a;
+       case ICMD_LOOKUPSWITCH:
+               s4ptr = (s4*)iptr->val.a;
 
-                               printf("\n");
-                               i = bptr->mpc;
-                               u1ptr = method->mcode + dseglen + i;
-
-                               if (bptr->next != NULL) {
-                                       for (; i < bptr->next->mpc; i++, u1ptr++) {
-                                               a = disassinstr(u1ptr, i);
-                                               i += a;
-                                               u1ptr += a;
-                                       }
-                                       printf("\n");
+               if (deadcode || !iptr->target) {
+                       printf(" %d;", *s4ptr);
+               }
+               else {
+                       tptr = (void **) iptr->target;
+                       printf(" L%03d;", ((basicblock *) *tptr)->debug_nr);
+                       tptr++;
+               }
+               s4ptr++;                                         /* default */
+               j = *s4ptr++;                                    /* count   */
 
-                               } else {
-                                       for (; u1ptr < (u1 *) (method->mcode + method->mcodelength); i++, u1ptr++) {
-                                               a = disassinstr(u1ptr, i); 
-                                               i += a;
-                                               u1ptr += a;
-                                       }
-                                       printf("\n");
-                               }
-#else
-                               printf("\n");
-                               i = bptr->mpc;
-                               s4ptr = (s4 *) (method->mcode + dseglen + i);
-
-                               if (bptr->next != NULL) {
-                                       for (; i < bptr->next->mpc; i += 4, s4ptr++) {
-                                               disassinstr(*s4ptr, i); 
-                                   }
-                                       printf("\n");
-                           }
-                               else {
-                                       for (; s4ptr < (s4 *) (method->mcode + method->mcodelength); i += 4, s4ptr++) {
-                                               disassinstr(*s4ptr, i); 
-                                   }
-                                       printf("\n");
-                           }
-#endif
-                   }
+               while (--j >= 0) {
+                       if (deadcode || !*tptr) {
+                               s4ptr++; /* skip value */
+                               printf(" %d",*s4ptr++);
+                       }
+                       else {
+                               printf(" L%03d", ((basicblock *) *tptr)->debug_nr);
+                               tptr++;
+                       }
                }
+               break;
        }
 }