diff options
Diffstat (limited to 'depends/pack200/src/bands.cpp')
| -rw-r--r-- | depends/pack200/src/bands.cpp | 423 |
1 files changed, 0 insertions, 423 deletions
diff --git a/depends/pack200/src/bands.cpp b/depends/pack200/src/bands.cpp deleted file mode 100644 index 1608d838..00000000 --- a/depends/pack200/src/bands.cpp +++ /dev/null @@ -1,423 +0,0 @@ -/* - * Copyright (c) 2002, 2009, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -// -*- C++ -*- -// Small program for unpacking specially compressed Java packages. -// John R. Rose - -#include <sys/types.h> - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <stdarg.h> -#include <assert.h> -#include <stdint.h> - -#include "defines.h" -#include "bytes.h" -#include "utils.h" -#include "coding.h" -#include "bands.h" - -#include "constants.h" -#include "unpack.h" - -void band::readData(int expectedLength) -{ - assert(expectedLength >= 0); - assert(vs[0].cmk == cmk_ERROR); - if (expectedLength != 0) - { - assert(length == 0); - length = expectedLength; - } - if (length == 0) - { - assert((rplimit = cm.vs0.rp = u->rp) != nullptr); - return; - } - assert(length > 0); - - bool is_BYTE1 = (defc->spec == BYTE1_spec); - - if (is_BYTE1) - { - // No possibility of coding change. Sizing is exact. - u->ensure_input(length); - } - else - { - // Make a conservatively generous estimate of band size in bytes. - // Assume B == 5 everywhere. - // Assume awkward pop with all {U} values (2*5 per value) - int64_t generous = (int64_t)length * (B_MAX * 3 + 1) + C_SLOP; - u->ensure_input(generous); - } - - // Read one value to see what it might be. - int XB = _meta_default; - if (!is_BYTE1) - { - // must be a variable-length coding - assert(defc->B() > 1 && defc->L() > 0); - - value_stream xvs; - coding *valc = defc; - if (valc->D() != 0) - { - valc = coding::findBySpec(defc->B(), defc->H(), defc->S()); - assert(!valc->isMalloc); - } - xvs.init(u->rp, u->rplimit, valc); - int X = xvs.getInt(); - if (valc->S() != 0) - { - assert(valc->min <= -256); - XB = -1 - X; - } - else - { - int L = valc->L(); - assert(valc->max >= L + 255); - XB = X - L; - } - if (0 <= XB && XB < 256) - { - // Skip over the escape value. - u->rp = xvs.rp; - } - else - { - // No, it's still default. - XB = _meta_default; - } - } - - if (XB <= _meta_canon_max) - { - byte XB_byte = (byte)XB; - byte *XB_ptr = &XB_byte; - cm.init(u->rp, u->rplimit, XB_ptr, 0, defc, length, nullptr); - } - else - { - assert(u->meta_rp != nullptr); - // Scribble the initial byte onto the band. - byte *save_meta_rp = --u->meta_rp; - byte save_meta_xb = (*save_meta_rp); - (*save_meta_rp) = (byte)XB; - cm.init(u->rp, u->rplimit, u->meta_rp, 0, defc, length, nullptr); - (*save_meta_rp) = save_meta_xb; // put it back, just to be tidy - } - rplimit = u->rp; - - rewind(); -} - -void band::setIndex(cpindex *ix_) -{ - assert(ix_ == nullptr || ixTag == ix_->ixTag); - ix = ix_; -} -void band::setIndexByTag(byte tag) -{ - setIndex(u->cp.getIndex(tag)); -} - -entry *band::getRefCommon(cpindex *ix_, bool nullOKwithCaller) -{ - assert(ix_->ixTag == ixTag || - (ixTag == CONSTANT_Literal && ix_->ixTag >= CONSTANT_Integer && - ix_->ixTag <= CONSTANT_String)); - int n = vs[0].getInt() - nullOK; - // Note: band-local nullOK means nullptr encodes as 0. - // But nullOKwithCaller means caller is willing to tolerate a nullptr. - entry *ref = ix_->get(n); - if (ref == nullptr && !(nullOKwithCaller && n == -1)) - unpack_abort(n == -1 ? "nullptr ref" : "bad ref"); - return ref; -} - -int64_t band::getLong(band &lo_band, bool have_hi) -{ - band &hi_band = (*this); - assert(lo_band.bn == hi_band.bn + 1); - uint32_t lo = lo_band.getInt(); - if (!have_hi) - { - assert(hi_band.length == 0); - return makeLong(0, lo); - } - uint32_t hi = hi_band.getInt(); - return makeLong(hi, lo); -} - -int band::getIntTotal() -{ - if (length == 0) - return 0; - if (total_memo > 0) - return total_memo - 1; - int total = getInt(); - // overflow checks require that none of the addends are <0, - // and that the partial sums never overflow (wrap negative) - if (total < 0) - { - unpack_abort("overflow detected"); - } - for (int k = length - 1; k > 0; k--) - { - int prev_total = total; - total += vs[0].getInt(); - if (total < prev_total) - { - unpack_abort("overflow detected"); - } - } - rewind(); - total_memo = total + 1; - return total; -} - -int band::getIntCount(int tag) -{ - if (length == 0) - return 0; - if (tag >= HIST0_MIN && tag <= HIST0_MAX) - { - if (hist0 == nullptr) - { - // Lazily calculate an approximate histogram. - hist0 = U_NEW(int, (HIST0_MAX - HIST0_MIN) + 1); - for (int k = length; k > 0; k--) - { - int x = vs[0].getInt(); - if (x >= HIST0_MIN && x <= HIST0_MAX) - hist0[x - HIST0_MIN] += 1; - } - rewind(); - } - return hist0[tag - HIST0_MIN]; - } - int total = 0; - for (int k = length; k > 0; k--) - { - total += (vs[0].getInt() == tag) ? 1 : 0; - } - rewind(); - return total; -} - -#define INDEX_INIT(tag, nullOK, subindex) ((tag) + (subindex) * SUBINDEX_BIT + (nullOK) * 256) - -#define INDEX(tag) INDEX_INIT(tag, 0, 0) -#define NULL_OR_INDEX(tag) INDEX_INIT(tag, 1, 0) -#define SUB_INDEX(tag) INDEX_INIT(tag, 0, 1) -#define NO_INDEX 0 - -struct band_init -{ - int defc; - int index; -}; - -#define BAND_INIT(name, cspec, ix) \ - { \ - cspec, ix \ - } - -const band_init all_band_inits[] = - { - // BAND_INIT(archive_magic, BYTE1_spec, 0), - // BAND_INIT(archive_header, UNSIGNED5_spec, 0), - // BAND_INIT(band_headers, BYTE1_spec, 0), - BAND_INIT(cp_Utf8_prefix, DELTA5_spec, 0), BAND_INIT(cp_Utf8_suffix, UNSIGNED5_spec, 0), - BAND_INIT(cp_Utf8_chars, CHAR3_spec, 0), BAND_INIT(cp_Utf8_big_suffix, DELTA5_spec, 0), - BAND_INIT(cp_Utf8_big_chars, DELTA5_spec, 0), BAND_INIT(cp_Int, UDELTA5_spec, 0), - BAND_INIT(cp_Float, UDELTA5_spec, 0), BAND_INIT(cp_Long_hi, UDELTA5_spec, 0), - BAND_INIT(cp_Long_lo, DELTA5_spec, 0), BAND_INIT(cp_Double_hi, UDELTA5_spec, 0), - BAND_INIT(cp_Double_lo, DELTA5_spec, 0), - BAND_INIT(cp_String, UDELTA5_spec, INDEX(CONSTANT_Utf8)), - BAND_INIT(cp_Class, UDELTA5_spec, INDEX(CONSTANT_Utf8)), - BAND_INIT(cp_Signature_form, DELTA5_spec, INDEX(CONSTANT_Utf8)), - BAND_INIT(cp_Signature_classes, UDELTA5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(cp_Descr_name, DELTA5_spec, INDEX(CONSTANT_Utf8)), - BAND_INIT(cp_Descr_type, UDELTA5_spec, INDEX(CONSTANT_Signature)), - BAND_INIT(cp_Field_class, DELTA5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(cp_Field_desc, UDELTA5_spec, INDEX(CONSTANT_NameandType)), - BAND_INIT(cp_Method_class, DELTA5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(cp_Method_desc, UDELTA5_spec, INDEX(CONSTANT_NameandType)), - BAND_INIT(cp_Imethod_class, DELTA5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(cp_Imethod_desc, UDELTA5_spec, INDEX(CONSTANT_NameandType)), - BAND_INIT(attr_definition_headers, BYTE1_spec, 0), - BAND_INIT(attr_definition_name, UNSIGNED5_spec, INDEX(CONSTANT_Utf8)), - BAND_INIT(attr_definition_layout, UNSIGNED5_spec, INDEX(CONSTANT_Utf8)), - BAND_INIT(ic_this_class, UDELTA5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(ic_flags, UNSIGNED5_spec, 0), - BAND_INIT(ic_outer_class, DELTA5_spec, NULL_OR_INDEX(CONSTANT_Class)), - BAND_INIT(ic_name, DELTA5_spec, NULL_OR_INDEX(CONSTANT_Utf8)), - BAND_INIT(class_this, DELTA5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(class_super, DELTA5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(class_interface_count, DELTA5_spec, 0), - BAND_INIT(class_interface, DELTA5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(class_field_count, DELTA5_spec, 0), - BAND_INIT(class_method_count, DELTA5_spec, 0), - BAND_INIT(field_descr, DELTA5_spec, INDEX(CONSTANT_NameandType)), - BAND_INIT(field_flags_hi, UNSIGNED5_spec, 0), - BAND_INIT(field_flags_lo, UNSIGNED5_spec, 0), - BAND_INIT(field_attr_count, UNSIGNED5_spec, 0), - BAND_INIT(field_attr_indexes, UNSIGNED5_spec, 0), - BAND_INIT(field_attr_calls, UNSIGNED5_spec, 0), - BAND_INIT(field_ConstantValue_KQ, UNSIGNED5_spec, INDEX(CONSTANT_Literal)), - BAND_INIT(field_Signature_RS, UNSIGNED5_spec, INDEX(CONSTANT_Signature)), - BAND_INIT(field_metadata_bands, -1, -1), BAND_INIT(field_attr_bands, -1, -1), - BAND_INIT(method_descr, MDELTA5_spec, INDEX(CONSTANT_NameandType)), - BAND_INIT(method_flags_hi, UNSIGNED5_spec, 0), - BAND_INIT(method_flags_lo, UNSIGNED5_spec, 0), - BAND_INIT(method_attr_count, UNSIGNED5_spec, 0), - BAND_INIT(method_attr_indexes, UNSIGNED5_spec, 0), - BAND_INIT(method_attr_calls, UNSIGNED5_spec, 0), - BAND_INIT(method_Exceptions_N, UNSIGNED5_spec, 0), - BAND_INIT(method_Exceptions_RC, UNSIGNED5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(method_Signature_RS, UNSIGNED5_spec, INDEX(CONSTANT_Signature)), - BAND_INIT(method_metadata_bands, -1, -1), BAND_INIT(method_attr_bands, -1, -1), - BAND_INIT(class_flags_hi, UNSIGNED5_spec, 0), - BAND_INIT(class_flags_lo, UNSIGNED5_spec, 0), - BAND_INIT(class_attr_count, UNSIGNED5_spec, 0), - BAND_INIT(class_attr_indexes, UNSIGNED5_spec, 0), - BAND_INIT(class_attr_calls, UNSIGNED5_spec, 0), - BAND_INIT(class_SourceFile_RUN, UNSIGNED5_spec, NULL_OR_INDEX(CONSTANT_Utf8)), - BAND_INIT(class_EnclosingMethod_RC, UNSIGNED5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(class_EnclosingMethod_RDN, UNSIGNED5_spec, - NULL_OR_INDEX(CONSTANT_NameandType)), - BAND_INIT(class_Signature_RS, UNSIGNED5_spec, INDEX(CONSTANT_Signature)), - BAND_INIT(class_metadata_bands, -1, -1), - BAND_INIT(class_InnerClasses_N, UNSIGNED5_spec, 0), - BAND_INIT(class_InnerClasses_RC, UNSIGNED5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(class_InnerClasses_F, UNSIGNED5_spec, 0), - BAND_INIT(class_InnerClasses_outer_RCN, UNSIGNED5_spec, NULL_OR_INDEX(CONSTANT_Class)), - BAND_INIT(class_InnerClasses_name_RUN, UNSIGNED5_spec, NULL_OR_INDEX(CONSTANT_Utf8)), - BAND_INIT(class_ClassFile_version_minor_H, UNSIGNED5_spec, 0), - BAND_INIT(class_ClassFile_version_major_H, UNSIGNED5_spec, 0), - BAND_INIT(class_attr_bands, -1, -1), BAND_INIT(code_headers, BYTE1_spec, 0), - BAND_INIT(code_max_stack, UNSIGNED5_spec, 0), - BAND_INIT(code_max_na_locals, UNSIGNED5_spec, 0), - BAND_INIT(code_handler_count, UNSIGNED5_spec, 0), - BAND_INIT(code_handler_start_P, BCI5_spec, 0), - BAND_INIT(code_handler_end_PO, BRANCH5_spec, 0), - BAND_INIT(code_handler_catch_PO, BRANCH5_spec, 0), - BAND_INIT(code_handler_class_RCN, UNSIGNED5_spec, NULL_OR_INDEX(CONSTANT_Class)), - BAND_INIT(code_flags_hi, UNSIGNED5_spec, 0), - BAND_INIT(code_flags_lo, UNSIGNED5_spec, 0), - BAND_INIT(code_attr_count, UNSIGNED5_spec, 0), - BAND_INIT(code_attr_indexes, UNSIGNED5_spec, 0), - BAND_INIT(code_attr_calls, UNSIGNED5_spec, 0), - BAND_INIT(code_StackMapTable_N, UNSIGNED5_spec, 0), - BAND_INIT(code_StackMapTable_frame_T, BYTE1_spec, 0), - BAND_INIT(code_StackMapTable_local_N, UNSIGNED5_spec, 0), - BAND_INIT(code_StackMapTable_stack_N, UNSIGNED5_spec, 0), - BAND_INIT(code_StackMapTable_offset, UNSIGNED5_spec, 0), - BAND_INIT(code_StackMapTable_T, BYTE1_spec, 0), - BAND_INIT(code_StackMapTable_RC, UNSIGNED5_spec, INDEX(CONSTANT_Class)), - BAND_INIT(code_StackMapTable_P, BCI5_spec, 0), - BAND_INIT(code_LineNumberTable_N, UNSIGNED5_spec, 0), - BAND_INIT(code_LineNumberTable_bci_P, BCI5_spec, 0), - BAND_INIT(code_LineNumberTable_line, UNSIGNED5_spec, 0), - BAND_INIT(code_LocalVariableTable_N, UNSIGNED5_spec, 0), - BAND_INIT(code_LocalVariableTable_bci_P, BCI5_spec, 0), - BAND_INIT(code_LocalVariableTable_span_O, BRANCH5_spec, 0), - BAND_INIT(code_LocalVariableTable_name_RU, UNSIGNED5_spec, INDEX(CONSTANT_Utf8)), - BAND_INIT(code_LocalVariableTable_type_RS, UNSIGNED5_spec, INDEX(CONSTANT_Signature)), - BAND_INIT(code_LocalVariableTable_slot, UNSIGNED5_spec, 0), - BAND_INIT(code_LocalVariableTypeTable_N, UNSIGNED5_spec, 0), - BAND_INIT(code_LocalVariableTypeTable_bci_P, BCI5_spec, 0), - BAND_INIT(code_LocalVariableTypeTable_span_O, BRANCH5_spec, 0), - BAND_INIT(code_LocalVariableTypeTable_name_RU, UNSIGNED5_spec, INDEX(CONSTANT_Utf8)), - BAND_INIT(code_LocalVariableTypeTable_type_RS, UNSIGNED5_spec, - INDEX(CONSTANT_Signature)), - BAND_INIT(code_LocalVariableTypeTable_slot, UNSIGNED5_spec, 0), - BAND_INIT(code_attr_bands, -1, -1), BAND_INIT(bc_codes, BYTE1_spec, 0), - BAND_INIT(bc_case_count, UNSIGNED5_spec, 0), BAND_INIT(bc_case_value, DELTA5_spec, 0), - BAND_INIT(bc_byte, BYTE1_spec, 0), BAND_INIT(bc_short, DELTA5_spec, 0), - BAND_INIT(bc_local, UNSIGNED5_spec, 0), BAND_INIT(bc_label, BRANCH5_spec, 0), - BAND_INIT(bc_intref, DELTA5_spec, INDEX(CONSTANT_Integer)), - BAND_INIT(bc_floatref, DELTA5_spec, INDEX(CONSTANT_Float)), - BAND_INIT(bc_longref, DELTA5_spec, INDEX(CONSTANT_Long)), - BAND_INIT(bc_doubleref, DELTA5_spec, INDEX(CONSTANT_Double)), - BAND_INIT(bc_stringref, DELTA5_spec, INDEX(CONSTANT_String)), - BAND_INIT(bc_classref, UNSIGNED5_spec, NULL_OR_INDEX(CONSTANT_Class)), - BAND_INIT(bc_fieldref, DELTA5_spec, INDEX(CONSTANT_Fieldref)), - BAND_INIT(bc_methodref, UNSIGNED5_spec, INDEX(CONSTANT_Methodref)), - BAND_INIT(bc_imethodref, DELTA5_spec, INDEX(CONSTANT_InterfaceMethodref)), - BAND_INIT(bc_thisfield, UNSIGNED5_spec, SUB_INDEX(CONSTANT_Fieldref)), - BAND_INIT(bc_superfield, UNSIGNED5_spec, SUB_INDEX(CONSTANT_Fieldref)), - BAND_INIT(bc_thismethod, UNSIGNED5_spec, SUB_INDEX(CONSTANT_Methodref)), - BAND_INIT(bc_supermethod, UNSIGNED5_spec, SUB_INDEX(CONSTANT_Methodref)), - BAND_INIT(bc_initref, UNSIGNED5_spec, SUB_INDEX(CONSTANT_Methodref)), - BAND_INIT(bc_escref, UNSIGNED5_spec, INDEX(CONSTANT_All)), - BAND_INIT(bc_escrefsize, UNSIGNED5_spec, 0), BAND_INIT(bc_escsize, UNSIGNED5_spec, 0), - BAND_INIT(bc_escbyte, BYTE1_spec, 0), - BAND_INIT(file_name, UNSIGNED5_spec, INDEX(CONSTANT_Utf8)), - BAND_INIT(file_size_hi, UNSIGNED5_spec, 0), BAND_INIT(file_size_lo, UNSIGNED5_spec, 0), - BAND_INIT(file_modtime, DELTA5_spec, 0), BAND_INIT(file_options, UNSIGNED5_spec, 0), - // BAND_INIT(file_bits, BYTE1_spec, 0), - {0, 0}}; - -band *band::makeBands(unpacker *u) -{ - band *tmp_all_bands = U_NEW(band, BAND_LIMIT); - for (int i = 0; i < BAND_LIMIT; i++) - { - assert((byte *)&all_band_inits[i + 1] < - (byte *)all_band_inits + sizeof(all_band_inits)); - const band_init &bi = all_band_inits[i]; - band &b = tmp_all_bands[i]; - coding *defc = coding::findBySpec(bi.defc); - assert((defc == nullptr) == (bi.defc == -1)); // no garbage, please - assert(defc == nullptr || !defc->isMalloc); - b.init(u, i, defc); - if (bi.index > 0) - { - b.nullOK = ((bi.index >> 8) & 1); - b.ixTag = (bi.index & 0xFF); - } - } - return tmp_all_bands; -} - -void band::initIndexes(unpacker *u) -{ - band *tmp_all_bands = u->all_bands; - for (int i = 0; i < BAND_LIMIT; i++) - { - band *scan = &tmp_all_bands[i]; - uint32_t tag = scan->ixTag; // Cf. #define INDEX(tag) above - if (tag != 0 && tag != CONSTANT_Literal && (tag & SUBINDEX_BIT) == 0) - { - scan->setIndex(u->cp.getIndex(tag)); - } - } -} |