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/* -----------------------------------------------------------------------------
* Bytecode disassembler
*
* Copyright (c) 1994-2002.
*
* $RCSfile: Disassembler.c,v $
* $Revision: 1.29 $
* $Date: 2004/09/03 15:28:19 $
* ---------------------------------------------------------------------------*/
#if defined(DEBUG)
#include "rts/PosixSource.h"
#include "Rts.h"
#include "RtsAPI.h"
#include "rts/Bytecodes.h"
#include "RtsUtils.h"
#include "Schedule.h"
#include "Printer.h"
#include "Disassembler.h"
#include "Interpreter.h"
/* --------------------------------------------------------------------------
* Disassembler
* ------------------------------------------------------------------------*/
int
disInstr ( StgBCO *bco, int pc )
{
StgWord16 instr;
StgWord16* instrs = (StgWord16*)(bco->instrs->payload);
StgArrBytes* literal_arr = bco->literals;
StgWord* literals = (StgWord*)(&literal_arr->payload[0]);
StgMutArrPtrs* ptrs_arr = bco->ptrs;
StgPtr* ptrs = (StgPtr*)(&ptrs_arr->payload[0]);
instr = instrs[pc++];
if (instr & bci_FLAG_LARGE_ARGS) {
debugBelch ("LARGE ");
}
#define BCO_NEXT instrs[pc++]
#define BCO_NEXT_32 (pc += 2)
#define BCO_READ_NEXT_32 (BCO_NEXT_32, (((StgWord) instrs[pc-2]) << 16) \
+ ( (StgWord) instrs[pc-1]))
#define BCO_NEXT_64 (pc += 4)
#define BCO_READ_NEXT_64 (BCO_NEXT_64, (((StgWord) instrs[pc-4]) << 48) \
+ (((StgWord) instrs[pc-3]) << 32) \
+ (((StgWord) instrs[pc-2]) << 16) \
+ ( (StgWord) instrs[pc-1]))
#if WORD_SIZE_IN_BITS == 32
#define BCO_NEXT_WORD BCO_NEXT_32
#define BCO_READ_NEXT_WORD BCO_READ_NEXT_32
#elif WORD_SIZE_IN_BITS == 64
#define BCO_NEXT_WORD BCO_NEXT_64
#define BCO_READ_NEXT_WORD BCO_READ_NEXT_64
#else
#error Cannot cope with WORD_SIZE_IN_BITS being nether 32 nor 64
#endif
#define BCO_GET_LARGE_ARG ((instr & bci_FLAG_LARGE_ARGS) ? BCO_READ_NEXT_WORD : BCO_NEXT)
switch (instr & 0xff) {
case bci_BRK_FUN:
debugBelch ("BRK_FUN " ); printPtr( ptrs[instrs[pc]] );
debugBelch (" %d ", instrs[pc+1]); printPtr( ptrs[instrs[pc+2]] );
CostCentre* cc = (CostCentre*)literals[instrs[pc+3]];
if (cc) {
debugBelch(" %s", cc->label);
}
debugBelch("\n");
pc += 4;
break;
case bci_SWIZZLE: {
W_ stkoff = BCO_GET_LARGE_ARG;
StgInt by = BCO_GET_LARGE_ARG;
debugBelch("SWIZZLE stkoff %" FMT_Word " by %" FMT_Int "\n", stkoff, by);
break; }
case bci_CCALL: {
debugBelch("CCALL marshaller at 0x%" FMT_HexWord "\n",
literals[instrs[pc]] );
pc += 1; break; }
case bci_PRIMCALL:
debugBelch("PRIMCALL\n");
break;
case bci_STKCHECK: {
StgWord stk_words_reqd = BCO_GET_LARGE_ARG + 1;
debugBelch("STKCHECK %" FMT_Word "\n", (W_)stk_words_reqd );
break;
}
case bci_PUSH_L: {
W_ x1 = BCO_GET_LARGE_ARG;
debugBelch("PUSH_L %" FMT_Word "\n", x1 );
break; }
case bci_PUSH_LL: {
W_ x1 = BCO_GET_LARGE_ARG;
W_ x2 = BCO_GET_LARGE_ARG;
debugBelch("PUSH_LL %" FMT_Word " %" FMT_Word "\n", x1, x2 );
break; }
case bci_PUSH_LLL: {
W_ x1 = BCO_GET_LARGE_ARG;
W_ x2 = BCO_GET_LARGE_ARG;
W_ x3 = BCO_GET_LARGE_ARG;
debugBelch("PUSH_LLL %" FMT_Word " %" FMT_Word " %" FMT_Word "\n", x1, x2, x3);
break; }
case bci_PUSH8: {
W_ x1 = BCO_GET_LARGE_ARG;
debugBelch("PUSH8 %" FMT_Word "\n", x1 );
break; }
case bci_PUSH16: {
W_ x1 = BCO_GET_LARGE_ARG;
debugBelch("PUSH16 %" FMT_Word "\n", x1 );
break; }
case bci_PUSH32: {
W_ x1 = BCO_GET_LARGE_ARG;
debugBelch("PUSH32 %" FMT_Word "\n", x1 );
break; }
case bci_PUSH8_W: {
W_ x1 = BCO_GET_LARGE_ARG;
debugBelch("PUSH8_W %" FMT_Word "\n", x1 );
break; }
case bci_PUSH16_W: {
W_ x1 = BCO_GET_LARGE_ARG;
debugBelch("PUSH16_W %" FMT_Word "\n", x1 );
break; }
case bci_PUSH32_W: {
W_ x1 = BCO_GET_LARGE_ARG;
debugBelch("PUSH32_W %" FMT_Word "\n", x1 );
break; }
case bci_PUSH_G:
debugBelch("PUSH_G " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n" );
pc += 1; break;
case bci_PUSH_ALTS_P:
debugBelch("PUSH_ALTS_P " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_N:
debugBelch("PUSH_ALTS_N " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_F:
debugBelch("PUSH_ALTS_F " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_D:
debugBelch("PUSH_ALTS_D " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_L:
debugBelch("PUSH_ALTS_L " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_V:
debugBelch("PUSH_ALTS_V " ); printPtr( ptrs[instrs[pc]] );
debugBelch("\n");
pc += 1; break;
case bci_PUSH_ALTS_T:
debugBelch("PUSH_ALTS_T ");
printPtr( ptrs[instrs[pc]] );
debugBelch(" 0x%" FMT_HexWord " ", literals[instrs[pc+1]] );
printPtr( ptrs[instrs[pc+2]] );
debugBelch("\n");
pc += 3; break;
case bci_PUSH_PAD8:
debugBelch("PUSH_PAD8\n");
pc += 1; break;
case bci_PUSH_PAD16:
debugBelch("PUSH_PAD16\n");
pc += 1; break;
case bci_PUSH_PAD32:
debugBelch("PUSH_PAD32\n");
pc += 1; break;
case bci_PUSH_UBX8:
debugBelch(
"PUSH_UBX8 0x%" FMT_HexWord8 "\n",
(StgWord8) literals[instrs[pc]] );
pc += 1; break;
case bci_PUSH_UBX16:
debugBelch(
"PUSH_UBX16 0x%" FMT_HexWord16 "\n",
(StgWord16) literals[instrs[pc]] );
pc += 1; break;
case bci_PUSH_UBX32:
debugBelch(
"PUSH_UBX32 0x%" FMT_HexWord32 "\n",
(StgWord32) literals[instrs[pc]] );
pc += 1; break;
case bci_PUSH_UBX: {
debugBelch("PUSH_UBX ");
W_ offset = BCO_GET_LARGE_ARG;
W_ nwords = BCO_GET_LARGE_ARG;
for (W_ i = 0; i < nwords; i++)
debugBelch("0x%" FMT_HexWord " ", literals[i + offset] );
debugBelch("\n");
break; }
case bci_PUSH_APPLY_N:
debugBelch("PUSH_APPLY_N\n");
break;
case bci_PUSH_APPLY_V:
debugBelch("PUSH_APPLY_V\n");
break;
case bci_PUSH_APPLY_F:
debugBelch("PUSH_APPLY_F\n");
break;
case bci_PUSH_APPLY_D:
debugBelch("PUSH_APPLY_D\n");
break;
case bci_PUSH_APPLY_L:
debugBelch("PUSH_APPLY_L\n");
break;
case bci_PUSH_APPLY_P:
debugBelch("PUSH_APPLY_P\n");
break;
case bci_PUSH_APPLY_PP:
debugBelch("PUSH_APPLY_PP\n");
break;
case bci_PUSH_APPLY_PPP:
debugBelch("PUSH_APPLY_PPP\n");
break;
case bci_PUSH_APPLY_PPPP:
debugBelch("PUSH_APPLY_PPPP\n");
break;
case bci_PUSH_APPLY_PPPPP:
debugBelch("PUSH_APPLY_PPPPP\n");
break;
case bci_PUSH_APPLY_PPPPPP:
debugBelch("PUSH_APPLY_PPPPPP\n");
break;
case bci_SLIDE: {
W_ nwords = BCO_GET_LARGE_ARG;
W_ by = BCO_GET_LARGE_ARG;
debugBelch("SLIDE %" FMT_Word " down by %" FMT_Word "\n", nwords, by );
break; }
case bci_ALLOC_AP: {
W_ nwords = BCO_GET_LARGE_ARG;
debugBelch("ALLOC_AP %" FMT_Word " words\n", nwords );
break; }
case bci_ALLOC_AP_NOUPD: {
W_ nwords = BCO_GET_LARGE_ARG;
debugBelch("ALLOC_AP_NOUPD %" FMT_Word " words\n", nwords );
break; }
case bci_ALLOC_PAP: {
W_ arity = BCO_GET_LARGE_ARG;
W_ nwords = BCO_GET_LARGE_ARG;
debugBelch("ALLOC_PAP %" FMT_Word " arity, %" FMT_Word " words\n",
arity, nwords );
break; }
case bci_MKAP: {
W_ stkoff = BCO_GET_LARGE_ARG;
W_ nwords = BCO_GET_LARGE_ARG;
debugBelch("MKAP %" FMT_Word " words, %" FMT_Word " stkoff\n", nwords,
stkoff );
break; }
case bci_MKPAP: {
W_ stkoff = BCO_GET_LARGE_ARG;
W_ nwords = BCO_GET_LARGE_ARG;
debugBelch("MKPAP %" FMT_Word " words, %" FMT_Word " stkoff\n", nwords,
stkoff );
break; }
case bci_UNPACK: {
W_ nwords = BCO_GET_LARGE_ARG;
debugBelch("UNPACK %" FMT_Word "\n", nwords );
break; }
case bci_PACK: {
int itbl = BCO_NEXT;
W_ nwords = BCO_GET_LARGE_ARG;
debugBelch("PACK %" FMT_Word " words with itbl ", nwords );
printPtr( (StgPtr)literals[itbl] );
debugBelch("\n");
break; }
case bci_TESTLT_I: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_I %" FMT_Int ", fail to %d\n", literals[discr], failto);
break;
}
case bci_TESTLT_I64: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_I64 %" FMT_Int64 ", fail to %d\n", *((StgInt64*)(literals+discr)), failto);
break;
}
case bci_TESTLT_I32: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_I32 %" FMT_Int ", fail to %d\n", literals[discr], failto);
break;
}
case bci_TESTLT_I16: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_I16 %" FMT_Int ", fail to %d\n", literals[discr], failto);
break;
}
case bci_TESTLT_I8: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_I8 %" FMT_Int ", fail to %d\n", literals[discr], failto);
break;
}
case bci_TESTEQ_I:
debugBelch("TESTEQ_I %" FMT_Int ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_I64:
debugBelch("TESTEQ_I64 %" FMT_Int64 ", fail to %d\n", *((StgInt64*)(literals+instrs[pc])),
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_I32:
debugBelch("TESTEQ_I32 %" FMT_Int ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_I16:
debugBelch("TESTEQ_I16 %" FMT_Int ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_I8:
debugBelch("TESTEQ_I8 %" FMT_Int ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTLT_W: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_W %" FMT_Word ", fail to %d\n", literals[discr], failto);
break;
}
case bci_TESTLT_W64: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_W64 %" FMT_Word64 ", fail to %d\n", *((StgWord64*)(literals+discr)), failto);
break;
}
case bci_TESTLT_W32: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_W32 %" FMT_Word ", fail to %d\n", literals[discr], failto);
break;
}
case bci_TESTLT_W16: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_W16 %" FMT_Word ", fail to %d\n", literals[discr], failto);
break;
}
case bci_TESTLT_W8: {
unsigned int discr = BCO_NEXT;
int failto = BCO_GET_LARGE_ARG;
debugBelch("TESTLT_W8 %" FMT_Word ", fail to %d\n", literals[discr], failto);
break;
}
case bci_TESTEQ_W:
debugBelch("TESTEQ_W %" FMT_Word ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_W64:
debugBelch("TESTEQ_W64 %" FMT_Word64 ", fail to %d\n", *((StgWord64*)(literals+instrs[pc])),
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_W32:
debugBelch("TESTEQ_W32 %" FMT_Word ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_W16:
debugBelch("TESTEQ_W16 %" FMT_Word ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_W8:
debugBelch("TESTEQ_W8 %" FMT_Word ", fail to %d\n", literals[instrs[pc]],
instrs[pc+1]);
pc += 2; break;
case bci_TESTLT_F:
debugBelch("TESTLT_F %f, fail to %d\n", *((StgFloat*)literals+instrs[pc]),
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_F:
debugBelch("TESTEQ_F %f, fail to %d\n", *((StgFloat*)literals+instrs[pc]),
instrs[pc+1]);
pc += 2; break;
case bci_TESTLT_D:
debugBelch("TESTLT_D %f, fail to %d\n", *((StgDouble*)(literals+instrs[pc])),
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_D:
debugBelch("TESTEQ_D %f, fail to %d\n", *((StgDouble*)(literals+instrs[pc])),
instrs[pc+1]);
pc += 2; break;
case bci_TESTLT_P:
debugBelch("TESTLT_P %d, fail to %d\n", instrs[pc],
instrs[pc+1]);
pc += 2; break;
case bci_TESTEQ_P:
debugBelch("TESTEQ_P %d, fail to %d\n", instrs[pc],
instrs[pc+1]);
pc += 2; break;
case bci_CASEFAIL:
debugBelch("CASEFAIL\n" );
break;
case bci_JMP:
debugBelch("JMP to %d\n", instrs[pc]);
pc += 1; break;
case bci_ENTER:
debugBelch("ENTER\n");
break;
case bci_RETURN_P:
debugBelch("RETURN_P\n" );
break;
case bci_RETURN_N:
debugBelch("RETURN_N\n" );
break;
case bci_RETURN_F:
debugBelch("RETURN_F\n" );
break;
case bci_RETURN_D:
debugBelch("RETURN_D\n" );
break;
case bci_RETURN_L:
debugBelch("RETURN_L\n" );
break;
case bci_RETURN_V:
debugBelch("RETURN_V\n" );
break;
case bci_RETURN_T:
debugBelch("RETURN_T\n ");
break;
default:
barf("disInstr: unknown opcode %u", (unsigned int) instr);
}
return pc;
}
void disassemble( StgBCO *bco )
{
uint32_t i, j;
StgWord16* instrs = (StgWord16*)(bco->instrs->payload);
StgMutArrPtrs* ptrs = bco->ptrs;
uint32_t nbcs = (uint32_t)(bco->instrs->bytes / sizeof(StgWord16));
uint32_t pc = 1;
debugBelch("BCO\n" );
pc = 0;
while (pc < nbcs) {
debugBelch("\t%2d: ", pc );
pc = disInstr ( bco, pc );
}
debugBelch("INSTRS:\n " );
j = 16;
for (i = 0; i < nbcs; i++) {
debugBelch("%3d ", (int)instrs[i] );
j--;
if (j == 0) { j = 16; debugBelch("\n "); };
}
debugBelch("\n");
debugBelch("PTRS:\n " );
j = 8;
for (i = 0; i < ptrs->ptrs; i++) {
debugBelch("%8p ", ptrs->payload[i] );
j--;
if (j == 0) { j = 8; debugBelch("\n "); };
}
debugBelch("\n");
debugBelch("\n");
}
#endif /* DEBUG */
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