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/* -----------------------------------------------------------------------------
* Bytecode disassembler
*
* Copyright (c) 1994-1998.
*
* $RCSfile: Disassembler.c,v $
* $Revision: 1.12 $
* $Date: 1999/12/07 11:49:11 $
* ---------------------------------------------------------------------------*/
#include "Rts.h"
#ifdef INTERPRETER
#include "RtsUtils.h"
#include "Bytecodes.h"
#include "Assembler.h"
#include "Printer.h"
#include "Disassembler.h"
/* --------------------------------------------------------------------------
* Disassembler
* ------------------------------------------------------------------------*/
static InstrPtr disNone ( StgBCO *bco, InstrPtr pc, char* i );
static InstrPtr disInt ( StgBCO *bco, InstrPtr pc, char* i );
static InstrPtr disIntInt ( StgBCO *bco, InstrPtr pc, char* i );
static InstrPtr disInfo ( StgBCO *bco, InstrPtr pc, char* i );
static InstrPtr disConstPtr ( StgBCO *bco, InstrPtr pc, char* i );
static InstrPtr disConstInt ( StgBCO *bco, InstrPtr pc, char* i );
static InstrPtr disConstChar ( StgBCO *bco, InstrPtr pc, char* i );
static InstrPtr disConstFloat ( StgBCO *bco, InstrPtr pc, char* i );
static InstrPtr disNone ( StgBCO *bco, InstrPtr pc, char* i )
{
fprintf(stderr,"%s",i);
return pc;
}
static InstrPtr disInt ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInt x = bcoInstr(bco,pc++);
ASSERT(pc <= bco->n_instrs);
fprintf(stderr,"%s %d",i,x);
return pc;
}
static InstrPtr disInt16 ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInt x = bcoInstr16(bco,pc); pc+=2;
ASSERT(pc <= bco->n_instrs);
fprintf(stderr,"%s %d",i,x);
return pc;
}
static InstrPtr disIntInt ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInt x = bcoInstr(bco,pc++);
StgInt y = bcoInstr(bco,pc++);
fprintf(stderr,"%s %d %d",i,x,y);
return pc;
}
static InstrPtr disIntInt16 ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInt x, y;
x = bcoInstr16(bco,pc); pc += 2;
y = bcoInstr16(bco,pc); pc += 2;
fprintf(stderr,"%s %d %d",i,x,y);
return pc;
}
static InstrPtr disIntPC ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInt x;
StgWord y;
x = bcoInstr(bco,pc++);
y = bcoInstr16(bco,pc); pc += 2;
fprintf(stderr,"%s %d %d",i,x,pc+y);
return pc;
}
static InstrPtr disPC ( StgBCO *bco, InstrPtr pc, char* i )
{
StgWord y = bcoInstr16(bco,pc); pc += 2;
fprintf(stderr,"%s %d",i,pc+y);
return pc;
}
static InstrPtr disInfo ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInfoTable* info = bcoConstInfoPtr(bco,bcoInstr(bco,pc++));
/* ToDo: print contents of infotable */
fprintf(stderr,"%s ",i);
printPtr(stgCast(StgPtr,info));
return pc;
}
static InstrPtr disInfo16 ( StgBCO *bco, InstrPtr pc, char* i )
{
StgWord x = bcoInstr16(bco,pc);
StgInfoTable* info = bcoConstInfoPtr(bco,x);
pc+=2;
/* ToDo: print contents of infotable */
fprintf(stderr,"%s ",i);
printPtr(stgCast(StgPtr,info));
return pc;
}
static InstrPtr disConstPtr ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInt o = bcoInstr(bco,pc++);
StgPtr x = bcoConstPtr(bco,o);
fprintf(stderr,"%s [%d]=",i,o);
printPtr(x); /* bad way to print it... */
return pc;
}
static InstrPtr disConstPtr16 ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInt o;
StgPtr x;
o = bcoInstr16(bco,pc); pc += 2;
x = bcoConstPtr(bco,o);
fprintf(stderr,"%s [%d]=",i,o);
printPtr(x); /* bad way to print it... */
return pc;
}
static InstrPtr disConstInt ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInt x = bcoConstInt(bco,bcoInstr(bco,pc++));
fprintf(stderr,"%s %d (0x%x)",i,x,x);
return pc;
}
static InstrPtr disConstInt16 ( StgBCO *bco, InstrPtr pc, char* i )
{
StgInt x = bcoConstInt(bco,bcoInstr16(bco,pc)); pc += 2;
fprintf(stderr,"%s %d (0x%x)",i,x,x);
return pc;
}
static InstrPtr disConstAddr ( StgBCO *bco, InstrPtr pc, char* i )
{
StgAddr x = bcoConstAddr(bco,bcoInstr(bco,pc++));
fprintf(stderr,"%s ",i);
printPtr(x);
return pc;
}
static InstrPtr disConstAddr16 ( StgBCO *bco, InstrPtr pc, char* i )
{
StgAddr x = bcoConstAddr(bco,bcoInstr16(bco,pc)); pc += 2;
fprintf(stderr,"%s ",i);
printPtr(x);
return pc;
}
static InstrPtr disConstChar ( StgBCO *bco, InstrPtr pc, char* i )
{
StgChar x = bcoConstChar(bco,bcoInstr(bco,pc++));
if (isprint((int)x))
fprintf(stderr,"%s '%c'",i,x); else
fprintf(stderr,"%s 0x%x",i,(int)x);
return pc;
}
static InstrPtr disConstChar16 ( StgBCO *bco, InstrPtr pc, char* i )
{
StgChar x = bcoConstChar(bco,bcoInstr16(bco,pc)); pc += 2;
if (isprint((int)x))
fprintf(stderr,"%s '%c'",i,x); else
fprintf(stderr,"%s 0x%x",i,(int)x);
return pc;
}
static InstrPtr disConstFloat ( StgBCO *bco, InstrPtr pc, char* i )
{
StgFloat x = bcoConstFloat(bco,bcoInstr(bco,pc++));
fprintf(stderr,"%s %f",i,x);
return pc;
}
static InstrPtr disConstFloat16 ( StgBCO *bco, InstrPtr pc, char* i )
{
StgFloat x = bcoConstFloat(bco,bcoInstr16(bco,pc)); pc += 2;
fprintf(stderr,"%s %f",i,x);
return pc;
}
static InstrPtr disConstDouble ( StgBCO *bco, InstrPtr pc, char* i )
{
StgDouble x = bcoConstDouble(bco,bcoInstr(bco,pc++));
fprintf(stderr,"%s %f",i,x);
return pc;
}
static InstrPtr disConstDouble16 ( StgBCO *bco, InstrPtr pc, char* i )
{
StgDouble x = bcoConstDouble(bco,bcoInstr16(bco,pc)); pc += 2;
fprintf(stderr,"%s %f",i,x);
return pc;
}
InstrPtr disInstr( StgBCO *bco, InstrPtr pc )
{
Instr in;
ASSERT(pc < bco->n_instrs);
in = bcoInstr(bco,pc++);
switch (in) {
case i_INTERNAL_ERROR:
return disNone(bco,pc,"INTERNAL_ERROR");
case i_PANIC:
return disNone(bco,pc,"PANIC");
case i_STK_CHECK:
return disInt(bco,pc,"STK_CHECK");
case i_STK_CHECK_big:
return disInt16(bco,pc,"STK_CHECK_big");
case i_ARG_CHECK:
return disInt(bco,pc,"ARG_CHECK");
case i_ALLOC_AP:
return disInt(bco,pc,"ALLOC_AP");
case i_ALLOC_PAP:
return disInt(bco,pc,"ALLOC_PAP");
case i_ALLOC_CONSTR:
return disInfo(bco,pc,"ALLOC_CONSTR");
case i_ALLOC_CONSTR_big:
return disInfo16(bco,pc,"ALLOC_CONSTR_big");
case i_MKAP:
return disIntInt(bco,pc,"MKAP");
case i_MKAP_big:
return disIntInt16(bco,pc,"MKAP_big");
case i_MKPAP:
return disIntInt(bco,pc,"MKPAP");
case i_PACK:
return disInt(bco,pc,"PACK");
case i_SLIDE:
return disIntInt(bco,pc,"SLIDE");
case i_RV:
return disIntInt(bco,pc,"R_V");
case i_RVE:
return disIntInt(bco,pc,"R_V_E");
case i_VV:
return disIntInt(bco,pc,"V_V");
case i_SE:
return disIntInt(bco,pc,"S_E");
case i_SLIDE_big:
return disIntInt16(bco,pc,"SLIDE_big");
case i_ENTER:
return disNone(bco,pc,"ENTER");
case i_RETADDR:
return disConstPtr(bco,pc,"RETADDR");
case i_RETADDR_big:
return disConstPtr16(bco,pc,"RETADDR_big");
case i_TEST:
return disIntPC(bco,pc,"TEST");
case i_UNPACK:
return disNone(bco,pc,"UNPACK");
case i_VAR:
return disInt(bco,pc,"VAR");
case i_VAR_big:
return disInt16(bco,pc,"VAR_big");
case i_CONST:
return disConstPtr(bco,pc,"CONST");
case i_CONST_big:
return disConstPtr16(bco,pc,"CONST_big");
case i_VOID:
return disNone(bco,pc,"VOID");
case i_VAR_INT:
return disInt(bco,pc,"VAR_INT");
case i_VAR_INT_big:
return disInt16(bco,pc,"VAR_INT_big");
case i_CONST_INT:
return disConstInt(bco,pc,"CONST_INT");
case i_CONST_INT_big:
return disConstInt16(bco,pc,"CONST_INT_big");
case i_PACK_INT:
return disNone(bco,pc,"PACK_INT");
case i_UNPACK_INT:
return disNone(bco,pc,"UNPACK_INT");
case i_TEST_INT:
return disPC(bco,pc,"TEST_INT");
case i_CONST_INTEGER:
return disConstAddr(bco,pc,"CONST_INTEGER");
case i_CONST_INTEGER_big:
return disConstAddr16(bco,pc,"CONST_INTEGER_big");
case i_VAR_WORD:
return disInt(bco,pc,"VAR_WORD");
case i_CONST_WORD:
return disConstInt(bco,pc,"CONST_WORD");
case i_PACK_WORD:
return disNone(bco,pc,"PACK_WORD");
case i_UNPACK_WORD:
return disNone(bco,pc,"UNPACK_WORD");
case i_VAR_ADDR:
return disInt(bco,pc,"VAR_ADDR");
case i_VAR_ADDR_big:
return disInt16(bco,pc,"VAR_ADDR_big");
case i_CONST_ADDR:
return disConstAddr(bco,pc,"CONST_ADDR");
case i_CONST_ADDR_big:
return disConstAddr16(bco,pc,"CONST_ADDR_big");
case i_PACK_ADDR:
return disNone(bco,pc,"PACK_ADDR");
case i_UNPACK_ADDR:
return disNone(bco,pc,"UNPACK_ADDR");
case i_VAR_CHAR:
return disInt(bco,pc,"VAR_CHAR");
case i_VAR_CHAR_big:
return disInt16(bco,pc,"VAR_CHAR_big");
case i_CONST_CHAR:
return disConstChar(bco,pc,"CONST_CHAR");
case i_CONST_CHAR_big:
return disConstChar16(bco,pc,"CONST_CHAR_big");
case i_PACK_CHAR:
return disNone(bco,pc,"PACK_CHAR");
case i_UNPACK_CHAR:
return disNone(bco,pc,"UNPACK_CHAR");
case i_VAR_FLOAT:
return disInt(bco,pc,"VAR_FLOAT");
case i_VAR_FLOAT_big:
return disInt16(bco,pc,"VAR_FLOAT_big");
case i_CONST_FLOAT:
return disConstFloat(bco,pc,"CONST_FLOAT");
case i_CONST_FLOAT_big:
return disConstFloat16(bco,pc,"CONST_FLOAT_big");
case i_PACK_FLOAT:
return disNone(bco,pc,"PACK_FLOAT");
case i_UNPACK_FLOAT:
return disNone(bco,pc,"UNPACK_FLOAT");
case i_VAR_DOUBLE:
return disInt(bco,pc,"VAR_DOUBLE");
case i_VAR_DOUBLE_big:
return disInt16(bco,pc,"VAR_DOUBLE_big");
case i_CONST_DOUBLE:
return disConstDouble(bco,pc,"CONST_DOUBLE");
case i_CONST_DOUBLE_big:
return disConstDouble16(bco,pc,"CONST_DOUBLE_big");
case i_PACK_DOUBLE:
return disNone(bco,pc,"PACK_DOUBLE");
case i_UNPACK_DOUBLE:
return disNone(bco,pc,"UNPACK_DOUBLE");
case i_VAR_STABLE:
return disInt(bco,pc,"VAR_STABLE");
case i_PACK_STABLE:
return disNone(bco,pc,"PACK_STABLE");
case i_UNPACK_STABLE:
return disNone(bco,pc,"UNPACK_STABLE");
case i_PRIMOP1:
{
Primop1 op = bcoInstr(bco,pc++);
switch (op) {
case i_INTERNAL_ERROR1:
return disNone(bco,pc,"INTERNAL_ERROR1");
case i_pushseqframe:
return disNone(bco,pc,"i_pushseqframe");
case i_pushcatchframe:
return disNone(bco,pc,"i_pushcatchframe");
default:
{
const AsmPrim* p = asmFindPrimop(i_PRIMOP1,op);
if (p) {
return disNone(bco,pc,p->name);
}
barf("Unrecognised primop1 %d\n",op);
}
}
}
case i_PRIMOP2:
{
Primop2 op = bcoInstr(bco,pc++);
switch (op) {
case i_INTERNAL_ERROR2:
return disNone(bco,pc,"INTERNAL_ERROR2");
case i_ccall_ccall_Id:
return disNone(bco,pc,"ccall_ccall_Id");
case i_ccall_ccall_IO:
return disNone(bco,pc,"ccall_ccall_IO");
case i_ccall_stdcall_Id:
return disNone(bco,pc,"ccall_stdcall_Id");
case i_ccall_stdcall_IO:
return disNone(bco,pc,"ccall_stdcall_IO");
case i_raise:
return disNone(bco,pc,"primRaise");
case i_takeMVar:
return disNone(bco,pc,"primTakeMVar");
default:
{
const AsmPrim* p = asmFindPrimop(i_PRIMOP2,op);
if (p) {
return disNone(bco,pc,p->name);
}
barf("Unrecognised primop2 %d\n",op);
}
}
}
default:
barf("Unrecognised instruction %d\n",in);
}
}
void disassemble( StgBCO *bco, char* prefix )
{
int pc = 0;
int pcLim = bco->n_instrs;
ASSERT( get_itbl(bco)->type == BCO);
while (pc < pcLim) {
fprintf(stderr,"%s%d:\t",prefix,pc);
pc = disInstr(bco,pc);
fprintf(stderr,"\n");
}
if (bco->stgexpr) {
ppStgExpr(bco->stgexpr);
fprintf(stderr, "\n");
}
else
fprintf(stderr, "\t(no associated tree)\n" );
}
#endif /* INTERPRETER */
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