stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

6939207: refactor constant pool index processing

Browse Source 
Factored cleanup of instruction decode which prepares for enhanced ldc semantics.

Reviewed-by: twisti
This commit is contained in:
John R Rose 2010-05-23 01:38:26 -07:00
parent 2e24ba80e9
commit 581521ba96
40 changed files with 875 additions and 592 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
hotspot/src/cpu/sparc/vm/interp_masm_sparc.cpp
View File

@ -720,25 +720,30 @@ void InterpreterMacroAssembler::get_4_byte_integer_at_bcp(
void InterpreterMacroAssembler::get_cache_index_at_bcp(Register cache, Register tmp,
int bcp_offset, bool giant_index) {
int bcp_offset, size_t index_size) {
assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
if (!giant_index) {
if (index_size == sizeof(u2)) {
get_2_byte_integer_at_bcp(bcp_offset, cache, tmp, Unsigned);
} else {
} else if (index_size == sizeof(u4)) {
assert(EnableInvokeDynamic, "giant index used only for EnableInvokeDynamic");
get_4_byte_integer_at_bcp(bcp_offset, cache, tmp);
assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line");
xor3(tmp, -1, tmp); // convert to plain index
} else if (index_size == sizeof(u1)) {
assert(EnableMethodHandles, "tiny index used only for EnableMethodHandles");
ldub(Lbcp, bcp_offset, tmp);
} else {
ShouldNotReachHere();
}
}
void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register tmp,
int bcp_offset, bool giant_index) {
int bcp_offset, size_t index_size) {
assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
assert_different_registers(cache, tmp);
assert_not_delayed();
get_cache_index_at_bcp(cache, tmp, bcp_offset, giant_index);
get_cache_index_at_bcp(cache, tmp, bcp_offset, index_size);
// convert from field index to ConstantPoolCacheEntry index and from
// word index to byte offset
sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp);
@ -747,12 +752,15 @@ void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Regis
void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
int bcp_offset, bool giant_index) {
int bcp_offset, size_t index_size) {
assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
assert_different_registers(cache, tmp);
assert_not_delayed();
assert(!giant_index,"NYI");
get_2_byte_integer_at_bcp(bcp_offset, cache, tmp, Unsigned);
if (index_size == sizeof(u2)) {
get_2_byte_integer_at_bcp(bcp_offset, cache, tmp, Unsigned);
} else {
ShouldNotReachHere(); // other sizes not supported here
}
// convert from field index to ConstantPoolCacheEntry index
// and from word index to byte offset
sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp);

6
hotspot/src/cpu/sparc/vm/interp_masm_sparc.hpp
View File

@ -182,9 +182,9 @@ class InterpreterMacroAssembler: public MacroAssembler {
Register Rdst,
setCCOrNot should_set_CC = dont_set_CC );
void get_cache_and_index_at_bcp(Register cache, Register tmp, int bcp_offset, bool giant_index = false);
void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, bool giant_index = false);
void get_cache_index_at_bcp(Register cache, Register tmp, int bcp_offset, bool giant_index = false);
void get_cache_and_index_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
void get_cache_index_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
// common code

2
hotspot/src/cpu/sparc/vm/templateInterpreter_sparc.cpp
View File

@ -204,7 +204,7 @@ address TemplateInterpreterGenerator::generate_return_entry_for(TosState state,
// out of the main line of code...
if (EnableInvokeDynamic) {
__ bind(L_giant_index);
__ get_cache_and_index_at_bcp(cache, G1_scratch, 1, true);
__ get_cache_and_index_at_bcp(cache, G1_scratch, 1, sizeof(u4));
__ ba(false, L_got_cache);
__ delayed()->nop();
}

67
hotspot/src/cpu/sparc/vm/templateTable_sparc.cpp
View File

@ -1949,23 +1949,30 @@ void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constrain
}
// ----------------------------------------------------------------------------
void TemplateTable::resolve_cache_and_index(int byte_no, Register Rcache, Register index) {
assert(byte_no == 1 || byte_no == 2, "byte_no out of range");
bool is_invokedynamic = (bytecode() == Bytecodes::_invokedynamic);
void TemplateTable::resolve_cache_and_index(int byte_no,
Register result,
Register Rcache,
Register index,
size_t index_size) {
// Depends on cpCacheOop layout!
const int shift_count = (1 + byte_no)*BitsPerByte;
Label resolved;
__ get_cache_and_index_at_bcp(Rcache, index, 1, is_invokedynamic);
if (is_invokedynamic) {
// We are resolved if the f1 field contains a non-null CallSite object.
__ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
if (byte_no == f1_oop) {
// We are resolved if the f1 field contains a non-null object (CallSite, etc.)
// This kind of CP cache entry does not need to match the flags byte, because
// there is a 1-1 relation between bytecode type and CP entry type.
assert_different_registers(result, Rcache);
__ ld_ptr(Rcache, constantPoolCacheOopDesc::base_offset() +
ConstantPoolCacheEntry::f1_offset(), Lbyte_code);
__ tst(Lbyte_code);
ConstantPoolCacheEntry::f1_offset(), result);
__ tst(result);
__ br(Assembler::notEqual, false, Assembler::pt, resolved);
__ delayed()->set((int)bytecode(), O1);
} else {
assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
assert(result == noreg, ""); //else change code for setting result
const int shift_count = (1 + byte_no)*BitsPerByte;
__ ld_ptr(Rcache, constantPoolCacheOopDesc::base_offset() +
ConstantPoolCacheEntry::indices_offset(), Lbyte_code);
@ -1992,7 +1999,10 @@ void TemplateTable::resolve_cache_and_index(int byte_no, Register Rcache, Regist
// first time invocation - must resolve first
__ call_VM(noreg, entry, O1);
// Update registers with resolved info
__ get_cache_and_index_at_bcp(Rcache, index, 1, is_invokedynamic);
__ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
if (result != noreg)
__ ld_ptr(Rcache, constantPoolCacheOopDesc::base_offset() +
ConstantPoolCacheEntry::f1_offset(), result);
__ bind(resolved);
}
@ -2001,7 +2011,8 @@ void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
Register Ritable_index,
Register Rflags,
bool is_invokevirtual,
bool is_invokevfinal) {
bool is_invokevfinal,
bool is_invokedynamic) {
// Uses both G3_scratch and G4_scratch
Register Rcache = G3_scratch;
Register Rscratch = G4_scratch;
@ -2025,11 +2036,15 @@ void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
if (is_invokevfinal) {
__ get_cache_and_index_at_bcp(Rcache, Rscratch, 1);
__ ld_ptr(Rcache, method_offset, Rmethod);
} else if (byte_no == f1_oop) {
// Resolved f1_oop goes directly into 'method' register.
resolve_cache_and_index(byte_no, Rmethod, Rcache, Rscratch, sizeof(u4));
} else {
resolve_cache_and_index(byte_no, Rcache, Rscratch);
resolve_cache_and_index(byte_no, noreg, Rcache, Rscratch, sizeof(u2));
__ ld_ptr(Rcache, method_offset, Rmethod);
}
__ ld_ptr(Rcache, method_offset, Rmethod);
if (Ritable_index != noreg) {
__ ld_ptr(Rcache, index_offset, Ritable_index);
}
@ -2110,7 +2125,7 @@ void TemplateTable::getfield_or_static(int byte_no, bool is_static) {
Register Rflags = G1_scratch;
ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
resolve_cache_and_index(byte_no, Rcache, index);
resolve_cache_and_index(byte_no, noreg, Rcache, index, sizeof(u2));
jvmti_post_field_access(Rcache, index, is_static, false);
load_field_cp_cache_entry(Rclass, Rcache, index, Roffset, Rflags, is_static);
@ -2475,7 +2490,7 @@ void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
Register Rflags = G1_scratch;
ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
resolve_cache_and_index(byte_no, Rcache, index);
resolve_cache_and_index(byte_no, noreg, Rcache, index, sizeof(u2));
jvmti_post_field_mod(Rcache, index, is_static);
load_field_cp_cache_entry(Rclass, Rcache, index, Roffset, Rflags, is_static);
@ -2816,6 +2831,7 @@ void TemplateTable::generate_vtable_call(Register Rrecv, Register Rindex, Regist
void TemplateTable::invokevirtual(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f2_byte, "use this argument");
Register Rscratch = G3_scratch;
Register Rtemp = G4_scratch;
@ -2823,7 +2839,7 @@ void TemplateTable::invokevirtual(int byte_no) {
Register Rrecv = G5_method;
Label notFinal;
load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, true);
load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, true, false, false);
__ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
// Check for vfinal
@ -2864,9 +2880,10 @@ void TemplateTable::invokevirtual(int byte_no) {
void TemplateTable::fast_invokevfinal(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f2_byte, "use this argument");
load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Lscratch, true,
/*is_invokevfinal*/true);
/*is_invokevfinal*/true, false);
__ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
invokevfinal_helper(G3_scratch, Lscratch);
}
@ -2901,12 +2918,13 @@ void TemplateTable::invokevfinal_helper(Register Rscratch, Register Rret) {
void TemplateTable::invokespecial(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_byte, "use this argument");
Register Rscratch = G3_scratch;
Register Rtemp = G4_scratch;
Register Rret = Lscratch;
load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, false);
load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, /*virtual*/ false, false, false);
__ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
__ verify_oop(G5_method);
@ -2934,12 +2952,13 @@ void TemplateTable::invokespecial(int byte_no) {
void TemplateTable::invokestatic(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_byte, "use this argument");
Register Rscratch = G3_scratch;
Register Rtemp = G4_scratch;
Register Rret = Lscratch;
load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, false);
load_invoke_cp_cache_entry(byte_no, G5_method, noreg, Rret, /*virtual*/ false, false, false);
__ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
__ verify_oop(G5_method);
@ -2992,6 +3011,7 @@ void TemplateTable::invokeinterface_object_method(Register RklassOop,
void TemplateTable::invokeinterface(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_byte, "use this argument");
Register Rscratch = G4_scratch;
Register Rret = G3_scratch;
@ -3001,7 +3021,7 @@ void TemplateTable::invokeinterface(int byte_no) {
Register Rflags = O1;
assert_different_registers(Rscratch, G5_method);
load_invoke_cp_cache_entry(byte_no, Rinterface, Rindex, Rflags, false);
load_invoke_cp_cache_entry(byte_no, Rinterface, Rindex, Rflags, /*virtual*/ false, false, false);
__ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
// get receiver
@ -3118,6 +3138,7 @@ void TemplateTable::invokeinterface(int byte_no) {
void TemplateTable::invokedynamic(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_oop, "use this argument");
if (!EnableInvokeDynamic) {
// We should not encounter this bytecode if !EnableInvokeDynamic.
@ -3132,7 +3153,6 @@ void TemplateTable::invokedynamic(int byte_no) {
// G5: CallSite object (f1)
// XX: unused (f2)
// G3: receiver address
// XX: flags (unused)
Register G5_callsite = G5_method;
@ -3140,7 +3160,8 @@ void TemplateTable::invokedynamic(int byte_no) {
Register Rtemp = G1_scratch;
Register Rret = Lscratch;
load_invoke_cp_cache_entry(byte_no, G5_callsite, noreg, Rret, false);
load_invoke_cp_cache_entry(byte_no, G5_callsite, noreg, Rret,
/*virtual*/ false, /*vfinal*/ false, /*indy*/ true);
__ mov(SP, O5_savedSP); // record SP that we wanted the callee to restore
__ verify_oop(G5_callsite);

19
hotspot/src/cpu/x86/vm/interp_masm_x86_32.cpp
View File

@ -189,11 +189,11 @@ void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, i
}
void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, bool giant_index) {
void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) {
assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
if (!giant_index) {
if (index_size == sizeof(u2)) {
load_unsigned_short(reg, Address(rsi, bcp_offset));
} else {
} else if (index_size == sizeof(u4)) {
assert(EnableInvokeDynamic, "giant index used only for EnableInvokeDynamic");
movl(reg, Address(rsi, bcp_offset));
// Check if the secondary index definition is still ~x, otherwise
@ -201,14 +201,19 @@ void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_off
// plain index.
assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line");
notl(reg); // convert to plain index
} else if (index_size == sizeof(u1)) {
assert(EnableMethodHandles, "tiny index used only for EnableMethodHandles");
load_unsigned_byte(reg, Address(rsi, bcp_offset));
} else {
ShouldNotReachHere();
}
}
void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index,
int bcp_offset, bool giant_index) {
int bcp_offset, size_t index_size) {
assert(cache != index, "must use different registers");
get_cache_index_at_bcp(index, bcp_offset, giant_index);
get_cache_index_at_bcp(index, bcp_offset, index_size);
movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index
@ -216,9 +221,9 @@ void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Regis
void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
int bcp_offset, bool giant_index) {
int bcp_offset, size_t index_size) {
assert(cache != tmp, "must use different register");
get_cache_index_at_bcp(tmp, bcp_offset, giant_index);
get_cache_index_at_bcp(tmp, bcp_offset, index_size);
assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
// convert from field index to ConstantPoolCacheEntry index
// and from word offset to byte offset

6
hotspot/src/cpu/x86/vm/interp_masm_x86_32.hpp
View File

@ -76,9 +76,9 @@ class InterpreterMacroAssembler: public MacroAssembler {
void get_cpool_and_tags(Register cpool, Register tags) { get_constant_pool(cpool); movptr(tags, Address(cpool, constantPoolOopDesc::tags_offset_in_bytes()));
}
void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, bool giant_index = false);
void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, bool giant_index = false);
void get_cache_index_at_bcp(Register index, int bcp_offset, bool giant_index = false);
void get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset, size_t index_size = sizeof(u2));
void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
// Expression stack
void f2ieee(); // truncate ftos to 32bits

19
hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp
View File

@ -187,11 +187,11 @@ void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(
void InterpreterMacroAssembler::get_cache_index_at_bcp(Register index,
int bcp_offset,
bool giant_index) {
size_t index_size) {
assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
if (!giant_index) {
if (index_size == sizeof(u2)) {
load_unsigned_short(index, Address(r13, bcp_offset));
} else {
} else if (index_size == sizeof(u4)) {
assert(EnableInvokeDynamic, "giant index used only for EnableInvokeDynamic");
movl(index, Address(r13, bcp_offset));
// Check if the secondary index definition is still ~x, otherwise
@ -199,6 +199,11 @@ void InterpreterMacroAssembler::get_cache_index_at_bcp(Register index,
// plain index.
assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line");
notl(index); // convert to plain index
} else if (index_size == sizeof(u1)) {
assert(EnableMethodHandles, "tiny index used only for EnableMethodHandles");
load_unsigned_byte(index, Address(r13, bcp_offset));
} else {
ShouldNotReachHere();
}
}
@ -206,9 +211,9 @@ void InterpreterMacroAssembler::get_cache_index_at_bcp(Register index,
void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache,
Register index,
int bcp_offset,
bool giant_index) {
size_t index_size) {
assert(cache != index, "must use different registers");
get_cache_index_at_bcp(index, bcp_offset, giant_index);
get_cache_index_at_bcp(index, bcp_offset, index_size);
movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
assert(sizeof(ConstantPoolCacheEntry) == 4 * wordSize, "adjust code below");
// convert from field index to ConstantPoolCacheEntry index
@ -219,9 +224,9 @@ void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache,
void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache,
Register tmp,
int bcp_offset,
bool giant_index) {
size_t index_size) {
assert(cache != tmp, "must use different register");
get_cache_index_at_bcp(tmp, bcp_offset, giant_index);
get_cache_index_at_bcp(tmp, bcp_offset, index_size);
assert(sizeof(ConstantPoolCacheEntry) == 4 * wordSize, "adjust code below");
// convert from field index to ConstantPoolCacheEntry index
// and from word offset to byte offset

6
hotspot/src/cpu/x86/vm/interp_masm_x86_64.hpp
View File

@ -95,10 +95,10 @@ class InterpreterMacroAssembler: public MacroAssembler {
void get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset);
void get_cache_and_index_at_bcp(Register cache, Register index,
int bcp_offset, bool giant_index = false);
int bcp_offset, size_t index_size = sizeof(u2));
void get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
int bcp_offset, bool giant_index = false);
void get_cache_index_at_bcp(Register index, int bcp_offset, bool giant_index = false);
int bcp_offset, size_t index_size = sizeof(u2));
void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
void pop_ptr(Register r = rax);

4
hotspot/src/cpu/x86/vm/templateInterpreter_x86_32.cpp
View File

@ -214,7 +214,7 @@ address TemplateInterpreterGenerator::generate_return_entry_for(TosState state,
__ cmpb(Address(rsi, 0), Bytecodes::_invokedynamic);
__ jcc(Assembler::equal, L_giant_index);
}
__ get_cache_and_index_at_bcp(rbx, rcx, 1, false);
__ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2));
__ bind(L_got_cache);
__ movl(rbx, Address(rbx, rcx,
Address::times_ptr, constantPoolCacheOopDesc::base_offset() +
@ -226,7 +226,7 @@ address TemplateInterpreterGenerator::generate_return_entry_for(TosState state,
// out of the main line of code...
if (EnableInvokeDynamic) {
__ bind(L_giant_index);
__ get_cache_and_index_at_bcp(rbx, rcx, 1, true);
__ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4));
__ jmp(L_got_cache);
}

4
hotspot/src/cpu/x86/vm/templateInterpreter_x86_64.cpp
View File

@ -192,7 +192,7 @@ address TemplateInterpreterGenerator::generate_return_entry_for(TosState state,
__ cmpb(Address(r13, 0), Bytecodes::_invokedynamic);
__ jcc(Assembler::equal, L_giant_index);
}
__ get_cache_and_index_at_bcp(rbx, rcx, 1, false);
__ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2));
__ bind(L_got_cache);
__ movl(rbx, Address(rbx, rcx,
Address::times_ptr,
@ -205,7 +205,7 @@ address TemplateInterpreterGenerator::generate_return_entry_for(TosState state,
// out of the main line of code...
if (EnableInvokeDynamic) {
__ bind(L_giant_index);
__ get_cache_and_index_at_bcp(rbx, rcx, 1, true);
__ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4));
__ jmp(L_got_cache);
}

61
hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp
View File

@ -2012,22 +2012,29 @@ void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constrain
__ membar(order_constraint);
}
void TemplateTable::resolve_cache_and_index(int byte_no, Register Rcache, Register index) {
assert(byte_no == 1 || byte_no == 2, "byte_no out of range");
bool is_invokedynamic = (bytecode() == Bytecodes::_invokedynamic);
void TemplateTable::resolve_cache_and_index(int byte_no,
Register result,
Register Rcache,
Register index,
size_t index_size) {
Register temp = rbx;
assert_different_registers(Rcache, index, temp);
assert_different_registers(result, Rcache, index, temp);
const int shift_count = (1 + byte_no)*BitsPerByte;
Label resolved;
__ get_cache_and_index_at_bcp(Rcache, index, 1, is_invokedynamic);
if (is_invokedynamic) {
// we are resolved if the f1 field contains a non-null CallSite object
__ cmpptr(Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset()), (int32_t) NULL_WORD);
__ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
if (byte_no == f1_oop) {
// We are resolved if the f1 field contains a non-null object (CallSite, etc.)
// This kind of CP cache entry does not need to match the flags byte, because
// there is a 1-1 relation between bytecode type and CP entry type.
assert(result != noreg, ""); //else do cmpptr(Address(...), (int32_t) NULL_WORD)
__ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset()));
__ testptr(result, result);
__ jcc(Assembler::notEqual, resolved);
} else {
assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
assert(result == noreg, ""); //else change code for setting result
const int shift_count = (1 + byte_no)*BitsPerByte;
__ movl(temp, Address(Rcache, index, Address::times_4, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset()));
__ shrl(temp, shift_count);
// have we resolved this bytecode?
@ -2053,7 +2060,9 @@ void TemplateTable::resolve_cache_and_index(int byte_no, Register Rcache, Regist
__ movl(temp, (int)bytecode());
__ call_VM(noreg, entry, temp);
// Update registers with resolved info
__ get_cache_and_index_at_bcp(Rcache, index, 1, is_invokedynamic);
__ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
if (result != noreg)
__ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset()));
__ bind(resolved);
}
@ -2087,7 +2096,8 @@ void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
Register itable_index,
Register flags,
bool is_invokevirtual,
bool is_invokevfinal /*unused*/) {
bool is_invokevfinal /*unused*/,
bool is_invokedynamic) {
// setup registers
const Register cache = rcx;
const Register index = rdx;
@ -2109,13 +2119,18 @@ void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() +
ConstantPoolCacheEntry::f2_offset());
resolve_cache_and_index(byte_no, cache, index);
__ movptr(method, Address(cache, index, Address::times_ptr, method_offset));
if (byte_no == f1_oop) {
// Resolved f1_oop goes directly into 'method' register.
assert(is_invokedynamic, "");
resolve_cache_and_index(byte_no, method, cache, index, sizeof(u4));
} else {
resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2));
__ movptr(method, Address(cache, index, Address::times_ptr, method_offset));
}
if (itable_index != noreg) {
__ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset));
}
__ movl(flags , Address(cache, index, Address::times_ptr, flags_offset ));
__ movl(flags, Address(cache, index, Address::times_ptr, flags_offset));
}
@ -2169,7 +2184,7 @@ void TemplateTable::getfield_or_static(int byte_no, bool is_static) {
const Register off = rbx;
const Register flags = rax;
resolve_cache_and_index(byte_no, cache, index);
resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2));
jvmti_post_field_access(cache, index, is_static, false);
load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
@ -2378,7 +2393,7 @@ void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
const Register off = rbx;
const Register flags = rax;
resolve_cache_and_index(byte_no, cache, index);
resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2));
jvmti_post_field_mod(cache, index, is_static);
load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
@ -2815,10 +2830,11 @@ void TemplateTable::prepare_invoke(Register method, Register index, int byte_no)
// save 'interpreter return address'
__ save_bcp();
load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual);
load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic);
// load receiver if needed (note: no return address pushed yet)
if (load_receiver) {
assert(!is_invokedynamic, "");
__ movl(recv, flags);
__ andl(recv, 0xFF);
// recv count is 0 based?
@ -2910,6 +2926,7 @@ void TemplateTable::invokevirtual_helper(Register index, Register recv,
void TemplateTable::invokevirtual(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f2_byte, "use this argument");
prepare_invoke(rbx, noreg, byte_no);
// rbx,: index
@ -2922,6 +2939,7 @@ void TemplateTable::invokevirtual(int byte_no) {
void TemplateTable::invokespecial(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_byte, "use this argument");
prepare_invoke(rbx, noreg, byte_no);
// do the call
__ verify_oop(rbx);
@ -2932,6 +2950,7 @@ void TemplateTable::invokespecial(int byte_no) {
void TemplateTable::invokestatic(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_byte, "use this argument");
prepare_invoke(rbx, noreg, byte_no);
// do the call
__ verify_oop(rbx);
@ -2942,12 +2961,14 @@ void TemplateTable::invokestatic(int byte_no) {
void TemplateTable::fast_invokevfinal(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f2_byte, "use this argument");
__ stop("fast_invokevfinal not used on x86");
}
void TemplateTable::invokeinterface(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_byte, "use this argument");
prepare_invoke(rax, rbx, byte_no);
// rax,: Interface
@ -3036,11 +3057,11 @@ void TemplateTable::invokedynamic(int byte_no) {
return;
}
assert(byte_no == f1_oop, "use this argument");
prepare_invoke(rax, rbx, byte_no);
// rax: CallSite object (f1)
// rbx: unused (f2)
// rcx: receiver address
// rdx: flags (unused)
if (ProfileInterpreter) {

67
hotspot/src/cpu/x86/vm/templateTable_x86_64.cpp
View File

@ -2015,21 +2015,28 @@ void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits
}
}
void TemplateTable::resolve_cache_and_index(int byte_no, Register Rcache, Register index) {
assert(byte_no == 1 || byte_no == 2, "byte_no out of range");
bool is_invokedynamic = (bytecode() == Bytecodes::_invokedynamic);
void TemplateTable::resolve_cache_and_index(int byte_no,
Register result,
Register Rcache,
Register index,
size_t index_size) {
const Register temp = rbx;
assert_different_registers(Rcache, index, temp);
assert_different_registers(result, Rcache, index, temp);
const int shift_count = (1 + byte_no) * BitsPerByte;
Label resolved;
__ get_cache_and_index_at_bcp(Rcache, index, 1, is_invokedynamic);
if (is_invokedynamic) {
// we are resolved if the f1 field contains a non-null CallSite object
__ cmpptr(Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset()), (int32_t) NULL_WORD);
__ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
if (byte_no == f1_oop) {
// We are resolved if the f1 field contains a non-null object (CallSite, etc.)
// This kind of CP cache entry does not need to match the flags byte, because
// there is a 1-1 relation between bytecode type and CP entry type.
assert(result != noreg, ""); //else do cmpptr(Address(...), (int32_t) NULL_WORD)
__ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset()));
__ testptr(result, result);
__ jcc(Assembler::notEqual, resolved);
} else {
assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
assert(result == noreg, ""); //else change code for setting result
const int shift_count = (1 + byte_no) * BitsPerByte;
__ movl(temp, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset()));
__ shrl(temp, shift_count);
// have we resolved this bytecode?
@ -2064,7 +2071,9 @@ void TemplateTable::resolve_cache_and_index(int byte_no, Register Rcache, Regist
__ call_VM(noreg, entry, temp);
// Update registers with resolved info
__ get_cache_and_index_at_bcp(Rcache, index, 1, is_invokedynamic);
__ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
if (result != noreg)
__ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset()));
__ bind(resolved);
}
@ -2100,7 +2109,8 @@ void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
Register itable_index,
Register flags,
bool is_invokevirtual,
bool is_invokevfinal /*unused*/) {
bool is_invokevfinal, /*unused*/
bool is_invokedynamic) {
// setup registers
const Register cache = rcx;
const Register index = rdx;
@ -2120,15 +2130,18 @@ void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() +
ConstantPoolCacheEntry::f2_offset());
resolve_cache_and_index(byte_no, cache, index);
assert(wordSize == 8, "adjust code below");
__ movptr(method, Address(cache, index, Address::times_8, method_offset));
if (itable_index != noreg) {
__ movptr(itable_index,
Address(cache, index, Address::times_8, index_offset));
if (byte_no == f1_oop) {
// Resolved f1_oop goes directly into 'method' register.
assert(is_invokedynamic, "");
resolve_cache_and_index(byte_no, method, cache, index, sizeof(u4));
} else {
resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2));
__ movptr(method, Address(cache, index, Address::times_ptr, method_offset));
}
__ movl(flags , Address(cache, index, Address::times_8, flags_offset));
if (itable_index != noreg) {
__ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset));
}
__ movl(flags, Address(cache, index, Address::times_ptr, flags_offset));
}
@ -2187,7 +2200,7 @@ void TemplateTable::getfield_or_static(int byte_no, bool is_static) {
const Register flags = rax;
const Register bc = c_rarg3; // uses same reg as obj, so don't mix them
resolve_cache_and_index(byte_no, cache, index);
resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2));
jvmti_post_field_access(cache, index, is_static, false);
load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
@ -2390,7 +2403,7 @@ void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
const Register flags = rax;
const Register bc = c_rarg3;
resolve_cache_and_index(byte_no, cache, index);
resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2));
jvmti_post_field_mod(cache, index, is_static);
load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
@ -2815,10 +2828,11 @@ void TemplateTable::prepare_invoke(Register method, Register index, int byte_no)
// save 'interpreter return address'
__ save_bcp();
load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual);
load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic);
// load receiver if needed (note: no return address pushed yet)
if (load_receiver) {
assert(!is_invokedynamic, "");
__ movl(recv, flags);
__ andl(recv, 0xFF);
Address recv_addr(rsp, recv, Address::times_8, -Interpreter::expr_offset_in_bytes(1));
@ -2914,6 +2928,7 @@ void TemplateTable::invokevirtual_helper(Register index,
void TemplateTable::invokevirtual(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f2_byte, "use this argument");
prepare_invoke(rbx, noreg, byte_no);
// rbx: index
@ -2926,6 +2941,7 @@ void TemplateTable::invokevirtual(int byte_no) {
void TemplateTable::invokespecial(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_byte, "use this argument");
prepare_invoke(rbx, noreg, byte_no);
// do the call
__ verify_oop(rbx);
@ -2936,6 +2952,7 @@ void TemplateTable::invokespecial(int byte_no) {
void TemplateTable::invokestatic(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_byte, "use this argument");
prepare_invoke(rbx, noreg, byte_no);
// do the call
__ verify_oop(rbx);
@ -2945,11 +2962,13 @@ void TemplateTable::invokestatic(int byte_no) {
void TemplateTable::fast_invokevfinal(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f2_byte, "use this argument");
__ stop("fast_invokevfinal not used on amd64");
}
void TemplateTable::invokeinterface(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_byte, "use this argument");
prepare_invoke(rax, rbx, byte_no);
// rax: Interface
@ -3027,6 +3046,7 @@ void TemplateTable::invokeinterface(int byte_no) {
void TemplateTable::invokedynamic(int byte_no) {
transition(vtos, vtos);
assert(byte_no == f1_oop, "use this argument");
if (!EnableInvokeDynamic) {
// We should not encounter this bytecode if !EnableInvokeDynamic.
@ -3039,6 +3059,7 @@ void TemplateTable::invokedynamic(int byte_no) {
return;
}
assert(byte_no == f1_oop, "use this argument");
prepare_invoke(rax, rbx, byte_no);
// rax: CallSite object (f1)

6
hotspot/src/share/vm/c1/c1_GraphBuilder.cpp
View File

@ -2438,13 +2438,13 @@ BlockEnd* GraphBuilder::iterate_bytecodes_for_block(int bci) {
case Bytecodes::_invokestatic : // fall through
case Bytecodes::_invokedynamic : // fall through
case Bytecodes::_invokeinterface: invoke(code); break;
case Bytecodes::_new : new_instance(s.get_index_big()); break;
case Bytecodes::_new : new_instance(s.get_index_u2()); break;
case Bytecodes::_newarray : new_type_array(); break;
case Bytecodes::_anewarray : new_object_array(); break;
case Bytecodes::_arraylength : ipush(append(new ArrayLength(apop(), lock_stack()))); break;
case Bytecodes::_athrow : throw_op(s.cur_bci()); break;
case Bytecodes::_checkcast : check_cast(s.get_index_big()); break;
case Bytecodes::_instanceof : instance_of(s.get_index_big()); break;
case Bytecodes::_checkcast : check_cast(s.get_index_u2()); break;
case Bytecodes::_instanceof : instance_of(s.get_index_u2()); break;
// Note: we do not have special handling for the monitorenter bytecode if DeoptC1 && DeoptOnAsyncException
case Bytecodes::_monitorenter : monitorenter(apop(), s.cur_bci()); break;
case Bytecodes::_monitorexit : monitorexit (apop(), s.cur_bci()); break;

48
hotspot/src/share/vm/ci/ciStreams.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1999-2010 Sun Microsystems, Inc. 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
@ -81,27 +81,21 @@ int ciExceptionHandlerStream::count_remaining() {
// providing accessors for constant pool items.
// ------------------------------------------------------------------
// ciBytecodeStream::wide
//
// Special handling for the wide bytcode
Bytecodes::Code ciBytecodeStream::wide()
{
// Get following bytecode; do not return wide
Bytecodes::Code bc = (Bytecodes::Code)_pc[1];
_pc += 2; // Skip both bytecodes
_pc += 2; // Skip index always
if( bc == Bytecodes::_iinc )
_pc += 2; // Skip optional constant
_was_wide = _pc; // Flag last wide bytecode found
return bc;
}
// ------------------------------------------------------------------
// ciBytecodeStream::table
// ciBytecodeStream::next_wide_or_table
//
// Special handling for switch ops
Bytecodes::Code ciBytecodeStream::table( Bytecodes::Code bc ) {
switch( bc ) { // Check for special bytecode handling
Bytecodes::Code ciBytecodeStream::next_wide_or_table(Bytecodes::Code bc) {
switch (bc) { // Check for special bytecode handling
case Bytecodes::_wide:
// Special handling for the wide bytcode
// Get following bytecode; do not return wide
assert(Bytecodes::Code(_pc[0]) == Bytecodes::_wide, "");
bc = Bytecodes::java_code(_raw_bc = (Bytecodes::Code)_pc[1]);
assert(Bytecodes::wide_length_for(bc) > 2, "must make progress");
_pc += Bytecodes::wide_length_for(bc);
_was_wide = _pc; // Flag last wide bytecode found
assert(is_wide(), "accessor works right");
break;
case Bytecodes::_lookupswitch:
_pc++; // Skip wide bytecode
@ -164,7 +158,7 @@ void ciBytecodeStream::force_bci(int bci) {
int ciBytecodeStream::get_klass_index() const {
switch(cur_bc()) {
case Bytecodes::_ldc:
return get_index();
return get_index_u1();
case Bytecodes::_ldc_w:
case Bytecodes::_ldc2_w:
case Bytecodes::_checkcast:
@ -173,7 +167,7 @@ int ciBytecodeStream::get_klass_index() const {
case Bytecodes::_multianewarray:
case Bytecodes::_new:
case Bytecodes::_newarray:
return get_index_big();
return get_index_u2();
default:
ShouldNotReachHere();
return 0;
@ -199,10 +193,10 @@ ciKlass* ciBytecodeStream::get_klass(bool& will_link) {
int ciBytecodeStream::get_constant_index() const {
switch(cur_bc()) {
case Bytecodes::_ldc:
return get_index();
return get_index_u1();
case Bytecodes::_ldc_w:
case Bytecodes::_ldc2_w:
return get_index_big();
return get_index_u2();
default:
ShouldNotReachHere();
return 0;
@ -239,7 +233,7 @@ int ciBytecodeStream::get_field_index() {
cur_bc() == Bytecodes::_putfield ||
cur_bc() == Bytecodes::_getstatic ||
cur_bc() == Bytecodes::_putstatic, "wrong bc");
return get_index_big();
return get_index_u2_cpcache();
}
@ -319,7 +313,9 @@ int ciBytecodeStream::get_method_index() {
ShouldNotReachHere();
}
#endif
return get_index_int();
if (has_index_u4())
return get_index_u4(); // invokedynamic
return get_index_u2_cpcache();
}
// ------------------------------------------------------------------

118
hotspot/src/share/vm/ci/ciStreams.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1999-2010 Sun Microsystems, Inc. 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
@ -31,15 +31,19 @@
// their original form during iteration.
class ciBytecodeStream : StackObj {
private:
// Handling for the weird bytecodes
Bytecodes::Code wide(); // Handle wide bytecode
Bytecodes::Code table(Bytecodes::Code); // Handle complicated inline table
// Handling for the weird bytecodes
Bytecodes::Code next_wide_or_table(Bytecodes::Code); // Handle _wide & complicated inline table
static Bytecodes::Code check_java(Bytecodes::Code c) {
assert(Bytecodes::is_java_code(c), "should not return _fast bytecodes");
return c;
}
static Bytecodes::Code check_defined(Bytecodes::Code c) {
assert(Bytecodes::is_defined(c), "");
return c;
}
ciMethod* _method; // the method
ciInstanceKlass* _holder;
address _bc_start; // Start of current bytecode for table
@ -50,11 +54,21 @@ private:
address _end; // Past end of bytecodes
address _pc; // Current PC
Bytecodes::Code _bc; // Current bytecode
Bytecodes::Code _raw_bc; // Current bytecode, raw form
void reset( address base, unsigned int size ) {
_bc_start =_was_wide = 0;
_start = _pc = base; _end = base + size; }
void assert_wide(bool require_wide) const {
if (require_wide)
{ assert(is_wide(), "must be a wide instruction"); }
else { assert(!is_wide(), "must not be a wide instruction"); }
}
Bytecode* bytecode() const { return Bytecode_at(_bc_start); }
Bytecode* next_bytecode() const { return Bytecode_at(_pc); }
public:
// End-Of-Bytecodes
static Bytecodes::Code EOBC() {
@ -92,11 +106,12 @@ public:
}
address cur_bcp() const { return _bc_start; } // Returns bcp to current instruction
int next_bci() const { return _pc -_start; }
int next_bci() const { return _pc - _start; }
int cur_bci() const { return _bc_start - _start; }
int instruction_size() const { return _pc - _bc_start; }
Bytecodes::Code cur_bc() const{ return check_java(_bc); }
Bytecodes::Code cur_bc_raw() const { return check_defined(_raw_bc); }
Bytecodes::Code next_bc() { return Bytecodes::java_code((Bytecodes::Code)* _pc); }
// Return current ByteCode and increment PC to next bytecode, skipping all
@ -109,85 +124,76 @@ public:
// Fetch Java bytecode
// All rewritten bytecodes maintain the size of original bytecode.
_bc = Bytecodes::java_code((Bytecodes::Code)*_pc);
_bc = Bytecodes::java_code(_raw_bc = (Bytecodes::Code)*_pc);
int csize = Bytecodes::length_for(_bc); // Expected size
if( _bc == Bytecodes::_wide ) {
_bc=wide(); // Handle wide bytecode
} else if( csize == 0 ) {
_bc=table(_bc); // Handle inline tables
} else {
_pc += csize; // Bump PC past bytecode
_pc += csize; // Bump PC past bytecode
if (csize == 0) {
_bc = next_wide_or_table(_bc);
}
return check_java(_bc);
}
bool is_wide() const { return ( _pc == _was_wide ); }
// Does this instruction contain an index which refes into the CP cache?
bool uses_cp_cache() const { return Bytecodes::uses_cp_cache(cur_bc_raw()); }
int get_index_u1() const {
return bytecode()->get_index_u1(cur_bc_raw());
}
// Get a byte index following this bytecode.
// If prefixed with a wide bytecode, get a wide index.
int get_index() const {
assert_index_size(is_wide() ? 2 : 1);
return (_pc == _was_wide) // was widened?
? Bytes::get_Java_u2(_bc_start+2) // yes, return wide index
: _bc_start[1]; // no, return narrow index
? get_index_u2(true) // yes, return wide index
: get_index_u1(); // no, return narrow index
}
// Get 2-byte index (getfield/putstatic/etc)
int get_index_big() const {
assert_index_size(2);
return Bytes::get_Java_u2(_bc_start+1);
// Get 2-byte index (byte swapping depending on which bytecode)
int get_index_u2(bool is_wide = false) const {
return bytecode()->get_index_u2(cur_bc_raw(), is_wide);
}
// Get 2-byte index (or 4-byte, for invokedynamic)
int get_index_int() const {
return has_giant_index() ? get_index_giant() : get_index_big();
// Get 2-byte index in native byte order. (Rewriter::rewrite makes these.)
int get_index_u2_cpcache() const {
return bytecode()->get_index_u2_cpcache(cur_bc_raw());
}
// Get 4-byte index, for invokedynamic.
int get_index_giant() const {
assert_index_size(4);
return Bytes::get_native_u4(_bc_start+1);
int get_index_u4() const {
return bytecode()->get_index_u4(cur_bc_raw());
}
bool has_giant_index() const { return (cur_bc() == Bytecodes::_invokedynamic); }
bool has_index_u4() const {
return bytecode()->has_index_u4(cur_bc_raw());
}
// Get dimensions byte (multinewarray)
int get_dimensions() const { return *(unsigned char*)(_pc-1); }
// Sign-extended index byte/short, no widening
int get_byte() const { return (int8_t)(_pc[-1]); }
int get_short() const { return (int16_t)Bytes::get_Java_u2(_pc-2); }
int get_long() const { return (int32_t)Bytes::get_Java_u4(_pc-4); }
int get_constant_u1() const { return bytecode()->get_constant_u1(instruction_size()-1, cur_bc_raw()); }
int get_constant_u2(bool is_wide = false) const { return bytecode()->get_constant_u2(instruction_size()-2, cur_bc_raw(), is_wide); }
// Get a byte signed constant for "iinc". Invalid for other bytecodes.
// If prefixed with a wide bytecode, get a wide constant
int get_iinc_con() const {return (_pc==_was_wide) ? get_short() :get_byte();}
int get_iinc_con() const {return (_pc==_was_wide) ? (jshort) get_constant_u2(true) : (jbyte) get_constant_u1();}
// 2-byte branch offset from current pc
int get_dest( ) const {
assert( Bytecodes::length_at(_bc_start) == sizeof(jshort)+1, "get_dest called with bad bytecode" );
return _bc_start-_start + (short)Bytes::get_Java_u2(_pc-2);
int get_dest() const {
return cur_bci() + bytecode()->get_offset_s2(cur_bc_raw());
}
// 2-byte branch offset from next pc
int next_get_dest( ) const {
address next_bc_start = _pc;
assert( _pc < _end, "" );
Bytecodes::Code next_bc = (Bytecodes::Code)*_pc;
assert( next_bc != Bytecodes::_wide, "");
int next_csize = Bytecodes::length_for(next_bc);
assert( next_csize != 0, "" );
assert( next_bc <= Bytecodes::_jsr_w, "");
address next_pc = _pc + next_csize;
assert( Bytecodes::length_at(next_bc_start) == sizeof(jshort)+1, "next_get_dest called with bad bytecode" );
return next_bc_start-_start + (short)Bytes::get_Java_u2(next_pc-2);
int next_get_dest() const {
assert(_pc < _end, "");
return next_bci() + next_bytecode()->get_offset_s2(Bytecodes::_ifeq);
}
// 4-byte branch offset from current pc
int get_far_dest( ) const {
assert( Bytecodes::length_at(_bc_start) == sizeof(jint)+1, "dest4 called with bad bytecode" );
return _bc_start-_start + (int)Bytes::get_Java_u4(_pc-4);
int get_far_dest() const {
return cur_bci() + bytecode()->get_offset_s4(cur_bc_raw());
}
// For a lookup or switch table, return target destination
@ -234,22 +240,6 @@ public:
ciCPCache* get_cpcache();
ciCallSite* get_call_site();
private:
void assert_index_size(int required_size) const {
#ifdef ASSERT
int isize = instruction_size() - (is_wide() ? 1 : 0) - 1;
if (isize == 2 && cur_bc() == Bytecodes::_iinc)
isize = 1;
else if (isize <= 2)
; // no change
else if (has_giant_index())
isize = 4;
else
isize = 2;
assert(isize = required_size, "wrong index size");
#endif
}
};

3
hotspot/src/share/vm/ci/ciTypeFlow.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 2000-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 2000-2010 Sun Microsystems, Inc. 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
@ -2132,6 +2132,7 @@ bool ciTypeFlow::can_trap(ciBytecodeStream& str) {
if (!Bytecodes::can_trap(str.cur_bc())) return false;
switch (str.cur_bc()) {
// %%% FIXME: ldc of Class can generate an exception
case Bytecodes::_ldc:
case Bytecodes::_ldc_w:
case Bytecodes::_ldc2_w:

30
hotspot/src/share/vm/classfile/verifier.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1998-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1998-2010 Sun Microsystems, Inc. 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
@ -410,13 +410,13 @@ void ClassVerifier::verify_method(methodHandle m, TRAPS) {
no_control_flow = false; break;
case Bytecodes::_ldc :
verify_ldc(
opcode, bcs.get_index(), &current_frame,
opcode, bcs.get_index_u1(), &current_frame,
cp, bci, CHECK_VERIFY(this));
no_control_flow = false; break;
case Bytecodes::_ldc_w :
case Bytecodes::_ldc2_w :
verify_ldc(
opcode, bcs.get_index_big(), &current_frame,
opcode, bcs.get_index_u2(), &current_frame,
cp, bci, CHECK_VERIFY(this));
no_control_flow = false; break;
case Bytecodes::_iload :
@ -1182,7 +1182,7 @@ void ClassVerifier::verify_method(methodHandle m, TRAPS) {
no_control_flow = false; break;
case Bytecodes::_new :
{
index = bcs.get_index_big();
index = bcs.get_index_u2();
verify_cp_class_type(index, cp, CHECK_VERIFY(this));
VerificationType new_class_type =
cp_index_to_type(index, cp, CHECK_VERIFY(this));
@ -1202,7 +1202,7 @@ void ClassVerifier::verify_method(methodHandle m, TRAPS) {
no_control_flow = false; break;
case Bytecodes::_anewarray :
verify_anewarray(
bcs.get_index_big(), cp, &current_frame, CHECK_VERIFY(this));
bcs.get_index_u2(), cp, &current_frame, CHECK_VERIFY(this));
no_control_flow = false; break;
case Bytecodes::_arraylength :
type = current_frame.pop_stack(
@ -1215,7 +1215,7 @@ void ClassVerifier::verify_method(methodHandle m, TRAPS) {
no_control_flow = false; break;
case Bytecodes::_checkcast :
{
index = bcs.get_index_big();
index = bcs.get_index_u2();
verify_cp_class_type(index, cp, CHECK_VERIFY(this));
current_frame.pop_stack(
VerificationType::reference_check(), CHECK_VERIFY(this));
@ -1225,7 +1225,7 @@ void ClassVerifier::verify_method(methodHandle m, TRAPS) {
no_control_flow = false; break;
}
case Bytecodes::_instanceof : {
index = bcs.get_index_big();
index = bcs.get_index_u2();
verify_cp_class_type(index, cp, CHECK_VERIFY(this));
current_frame.pop_stack(
VerificationType::reference_check(), CHECK_VERIFY(this));
@ -1240,7 +1240,7 @@ void ClassVerifier::verify_method(methodHandle m, TRAPS) {
no_control_flow = false; break;
case Bytecodes::_multianewarray :
{
index = bcs.get_index_big();
index = bcs.get_index_u2();
u2 dim = *(bcs.bcp()+3);
verify_cp_class_type(index, cp, CHECK_VERIFY(this));
VerificationType new_array_type =
@ -1299,7 +1299,7 @@ char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) {
while (!bcs.is_last_bytecode()) {
if (bcs.raw_next() != Bytecodes::_illegal) {
int bci = bcs.bci();
if (bcs.code() == Bytecodes::_new) {
if (bcs.raw_code() == Bytecodes::_new) {
code_data[bci] = NEW_OFFSET;
} else {
code_data[bci] = BYTECODE_OFFSET;
@ -1654,7 +1654,7 @@ void ClassVerifier::verify_switch(
int keys, delta;
current_frame->pop_stack(
VerificationType::integer_type(), CHECK_VERIFY(this));
if (bcs->code() == Bytecodes::_tableswitch) {
if (bcs->raw_code() == Bytecodes::_tableswitch) {
jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize);
jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize);
if (low > high) {
@ -1710,7 +1710,7 @@ void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs,
StackMapFrame* current_frame,
constantPoolHandle cp,
TRAPS) {
u2 index = bcs->get_index_big();
u2 index = bcs->get_index_u2();
verify_cp_type(index, cp, 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this));
// Get field name and signature
@ -1750,7 +1750,7 @@ void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs,
&sig_stream, field_type, CHECK_VERIFY(this));
u2 bci = bcs->bci();
bool is_assignable;
switch (bcs->code()) {
switch (bcs->raw_code()) {
case Bytecodes::_getstatic: {
for (int i = 0; i < n; i++) {
current_frame->push_stack(field_type[i], CHECK_VERIFY(this));
@ -1870,7 +1870,7 @@ void ClassVerifier::verify_invoke_init(
ref_class_type.name(), CHECK_VERIFY(this));
methodOop m = instanceKlass::cast(ref_klass)->uncached_lookup_method(
vmSymbols::object_initializer_name(),
cp->signature_ref_at(bcs->get_index_big()));
cp->signature_ref_at(bcs->get_index_u2()));
instanceKlassHandle mh(THREAD, m->method_holder());
if (m->is_protected() && !mh->is_same_class_package(_klass())) {
bool assignable = current_type().is_assignable_from(
@ -1893,8 +1893,8 @@ void ClassVerifier::verify_invoke_instructions(
bool *this_uninit, VerificationType return_type,
constantPoolHandle cp, TRAPS) {
// Make sure the constant pool item is the right type
u2 index = bcs->get_index_big();
Bytecodes::Code opcode = bcs->code();
u2 index = bcs->get_index_u2();
Bytecodes::Code opcode = bcs->raw_code();
unsigned int types = (opcode == Bytecodes::_invokeinterface
? 1 << JVM_CONSTANT_InterfaceMethodref
: opcode == Bytecodes::_invokedynamic

1
hotspot/src/share/vm/includeDB_core
View File

@ -827,6 +827,7 @@ ciStreams.cpp ciField.hpp
ciStreams.cpp ciStreams.hpp
ciStreams.cpp ciUtilities.hpp
ciStreams.hpp bytecode.hpp
ciStreams.hpp ciClassList.hpp
ciStreams.hpp ciExceptionHandler.hpp
ciStreams.hpp ciInstanceKlass.hpp

125
hotspot/src/share/vm/interpreter/bytecode.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -26,19 +26,12 @@
#include "incls/_bytecode.cpp.incl"
// Implementation of Bytecode
// Should eventually get rid of these functions and use ThisRelativeObj methods instead
void Bytecode::set_code(Bytecodes::Code code) {
Bytecodes::check(code);
*addr_at(0) = u_char(code);
}
bool Bytecode::check_must_rewrite() const {
assert(Bytecodes::can_rewrite(code()), "post-check only");
bool Bytecode::check_must_rewrite(Bytecodes::Code code) const {
assert(Bytecodes::can_rewrite(code), "post-check only");
// Some codes are conditionally rewriting. Look closely at them.
switch (code()) {
switch (code) {
case Bytecodes::_aload_0:
// Even if RewriteFrequentPairs is turned on,
// the _aload_0 code might delay its rewrite until
@ -58,14 +51,85 @@ bool Bytecode::check_must_rewrite() const {
}
#ifdef ASSERT
void Bytecode::assert_same_format_as(Bytecodes::Code testbc, bool is_wide) const {
Bytecodes::Code thisbc = Bytecodes::cast(byte_at(0));
if (thisbc == Bytecodes::_breakpoint) return; // let the assertion fail silently
if (is_wide) {
assert(thisbc == Bytecodes::_wide, "expected a wide instruction");
thisbc = Bytecodes::cast(byte_at(1));
if (thisbc == Bytecodes::_breakpoint) return;
}
int thisflags = Bytecodes::flags(testbc, is_wide) & Bytecodes::_all_fmt_bits;
int testflags = Bytecodes::flags(thisbc, is_wide) & Bytecodes::_all_fmt_bits;
if (thisflags != testflags)
tty->print_cr("assert_same_format_as(%d) failed on bc=%d%s; %d != %d",
(int)testbc, (int)thisbc, (is_wide?"/wide":""), testflags, thisflags);
assert(thisflags == testflags, "expected format");
}
void Bytecode::assert_index_size(int size, Bytecodes::Code bc, bool is_wide) {
int have_fmt = (Bytecodes::flags(bc, is_wide)
& (Bytecodes::_fmt_has_u2 | Bytecodes::_fmt_has_u4 |
Bytecodes::_fmt_not_simple |
// Not an offset field:
Bytecodes::_fmt_has_o));
int need_fmt = -1;
switch (size) {
case 1: need_fmt = 0; break;
case 2: need_fmt = Bytecodes::_fmt_has_u2; break;
case 4: need_fmt = Bytecodes::_fmt_has_u4; break;
}
if (is_wide) need_fmt |= Bytecodes::_fmt_not_simple;
if (have_fmt != need_fmt) {
tty->print_cr("assert_index_size %d: bc=%d%s %d != %d", size, bc, (is_wide?"/wide":""), have_fmt, need_fmt);
assert(have_fmt == need_fmt, "assert_index_size");
}
}
void Bytecode::assert_offset_size(int size, Bytecodes::Code bc, bool is_wide) {
int have_fmt = Bytecodes::flags(bc, is_wide) & Bytecodes::_all_fmt_bits;
int need_fmt = -1;
switch (size) {
case 2: need_fmt = Bytecodes::_fmt_bo2; break;
case 4: need_fmt = Bytecodes::_fmt_bo4; break;
}
if (is_wide) need_fmt |= Bytecodes::_fmt_not_simple;
if (have_fmt != need_fmt) {
tty->print_cr("assert_offset_size %d: bc=%d%s %d != %d", size, bc, (is_wide?"/wide":""), have_fmt, need_fmt);
assert(have_fmt == need_fmt, "assert_offset_size");
}
}
void Bytecode::assert_constant_size(int size, int where, Bytecodes::Code bc, bool is_wide) {
int have_fmt = Bytecodes::flags(bc, is_wide) & (Bytecodes::_all_fmt_bits
// Ignore any 'i' field (for iinc):
& ~Bytecodes::_fmt_has_i);
int need_fmt = -1;
switch (size) {
case 1: need_fmt = Bytecodes::_fmt_bc; break;
case 2: need_fmt = Bytecodes::_fmt_bc | Bytecodes::_fmt_has_u2; break;
}
if (is_wide) need_fmt |= Bytecodes::_fmt_not_simple;
int length = is_wide ? Bytecodes::wide_length_for(bc) : Bytecodes::length_for(bc);
if (have_fmt != need_fmt || where + size != length) {
tty->print_cr("assert_constant_size %d @%d: bc=%d%s %d != %d", size, where, bc, (is_wide?"/wide":""), have_fmt, need_fmt);
}
assert(have_fmt == need_fmt, "assert_constant_size");
assert(where + size == length, "assert_constant_size oob");
}
void Bytecode::assert_native_index(Bytecodes::Code bc, bool is_wide) {
assert((Bytecodes::flags(bc, is_wide) & Bytecodes::_fmt_has_nbo) != 0, "native index");
}
#endif //ASSERT
// Implementation of Bytecode_tableupswitch
int Bytecode_tableswitch::dest_offset_at(int i) const {
address x = aligned_addr_at(1);
int x2 = aligned_offset(1 + (3 + i)*jintSize);
int val = java_signed_word_at(x2);
return java_signed_word_at(aligned_offset(1 + (3 + i)*jintSize));
return get_Java_u4_at(aligned_offset(1 + (3 + i)*jintSize));
}
@ -74,6 +138,7 @@ int Bytecode_tableswitch::dest_offset_at(int i) const {
void Bytecode_invoke::verify() const {
Bytecodes::Code bc = adjusted_invoke_code();
assert(is_valid(), "check invoke");
assert(method()->constants()->cache() != NULL, "do not call this from verifier or rewriter");
}
@ -116,27 +181,12 @@ methodHandle Bytecode_invoke::static_target(TRAPS) {
int Bytecode_invoke::index() const {
// Note: Rewriter::rewrite changes the Java_u2 of an invokedynamic to a native_u4,
// at the same time it allocates per-call-site CP cache entries.
if (has_giant_index())
return Bytes::get_native_u4(bcp() + 1);
Bytecodes::Code stdc = Bytecodes::java_code(code());
Bytecode* invoke = Bytecode_at(bcp());
if (invoke->has_index_u4(stdc))
return invoke->get_index_u4(stdc);
else
return Bytes::get_Java_u2(bcp() + 1);
}
// Implementation of Bytecode_static
void Bytecode_static::verify() const {
assert(Bytecodes::java_code(code()) == Bytecodes::_putstatic
|| Bytecodes::java_code(code()) == Bytecodes::_getstatic, "check static");
}
BasicType Bytecode_static::result_type(methodOop method) const {
int index = java_hwrd_at(1);
constantPoolOop constants = method->constants();
symbolOop field_type = constants->signature_ref_at(index);
BasicType basic_type = FieldType::basic_type(field_type);
return basic_type;
return invoke->get_index_u2_cpcache(stdc);
}
@ -156,7 +206,8 @@ bool Bytecode_field::is_static() const {
int Bytecode_field::index() const {
return java_hwrd_at(1);
Bytecode* invoke = Bytecode_at(bcp());
return invoke->get_index_u2_cpcache(Bytecodes::_getfield);
}
@ -164,7 +215,7 @@ int Bytecode_field::index() const {
int Bytecode_loadconstant::index() const {
Bytecodes::Code stdc = Bytecodes::java_code(code());
return stdc == Bytecodes::_ldc ? java_byte_at(1) : java_hwrd_at(1);
return stdc == Bytecodes::_ldc ? get_index_u1(stdc) : get_index_u2(stdc);
}
//------------------------------------------------------------------------------

163
hotspot/src/share/vm/interpreter/bytecode.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -26,92 +26,100 @@
// relative to an objects 'this' pointer.
class ThisRelativeObj VALUE_OBJ_CLASS_SPEC {
private:
int sign_extend (int x, int size) const { const int s = (BytesPerInt - size)*BitsPerByte; return (x << s) >> s; }
public:
// Address computation
address addr_at (int offset) const { return (address)this + offset; }
int byte_at (int offset) const { return *(addr_at(offset)); }
address aligned_addr_at (int offset) const { return (address)round_to((intptr_t)addr_at(offset), jintSize); }
int aligned_offset (int offset) const { return aligned_addr_at(offset) - addr_at(0); }
// Java unsigned accessors (using Java spec byte ordering)
int java_byte_at (int offset) const { return *(jubyte*)addr_at(offset); }
int java_hwrd_at (int offset) const { return java_byte_at(offset) << (1 * BitsPerByte) | java_byte_at(offset + 1); }
int java_word_at (int offset) const { return java_hwrd_at(offset) << (2 * BitsPerByte) | java_hwrd_at(offset + 2); }
// Java signed accessors (using Java spec byte ordering)
int java_signed_byte_at(int offset) const { return sign_extend(java_byte_at(offset), 1); }
int java_signed_hwrd_at(int offset) const { return sign_extend(java_hwrd_at(offset), 2); }
int java_signed_word_at(int offset) const { return java_word_at(offset) ; }
// Fast accessors (using the machine's natural byte ordering)
int fast_byte_at (int offset) const { return *(jubyte *)addr_at(offset); }
int fast_hwrd_at (int offset) const { return *(jushort*)addr_at(offset); }
int fast_word_at (int offset) const { return *(juint *)addr_at(offset); }
// Fast signed accessors (using the machine's natural byte ordering)
int fast_signed_byte_at(int offset) const { return *(jbyte *)addr_at(offset); }
int fast_signed_hwrd_at(int offset) const { return *(jshort*)addr_at(offset); }
int fast_signed_word_at(int offset) const { return *(jint *)addr_at(offset); }
// Fast manipulators (using the machine's natural byte ordering)
void set_fast_byte_at (int offset, int x) const { *(jbyte *)addr_at(offset) = (jbyte )x; }
void set_fast_hwrd_at (int offset, int x) const { *(jshort*)addr_at(offset) = (jshort)x; }
void set_fast_word_at (int offset, int x) const { *(jint *)addr_at(offset) = (jint )x; }
// Word access:
int get_Java_u2_at (int offset) const { return Bytes::get_Java_u2(addr_at(offset)); }
int get_Java_u4_at (int offset) const { return Bytes::get_Java_u4(addr_at(offset)); }
int get_native_u2_at (int offset) const { return Bytes::get_native_u2(addr_at(offset)); }
int get_native_u4_at (int offset) const { return Bytes::get_native_u4(addr_at(offset)); }
};
// The base class for different kinds of bytecode abstractions.
// Provides the primitive operations to manipulate code relative
// to an objects 'this' pointer.
// FIXME: Make this a ResourceObj, include the enclosing methodOop, and cache the opcode.
class Bytecode: public ThisRelativeObj {
protected:
u_char byte_at(int offset) const { return *addr_at(offset); }
bool check_must_rewrite() const;
bool check_must_rewrite(Bytecodes::Code bc) const;
public:
// Attributes
address bcp() const { return addr_at(0); }
address next_bcp() const { return addr_at(0) + Bytecodes::length_at(bcp()); }
int instruction_size() const { return Bytecodes::length_at(bcp()); }
// Warning: Use code() with caution on live bytecode streams. 4926272
Bytecodes::Code code() const { return Bytecodes::code_at(addr_at(0)); }
Bytecodes::Code java_code() const { return Bytecodes::java_code(code()); }
bool must_rewrite() const { return Bytecodes::can_rewrite(code()) && check_must_rewrite(); }
bool is_active_breakpoint() const { return Bytecodes::is_active_breakpoint_at(bcp()); }
int one_byte_index() const { assert_index_size(1); return byte_at(1); }
int two_byte_index() const { assert_index_size(2); return (byte_at(1) << 8) + byte_at(2); }
int offset() const { return (two_byte_index() << 16) >> 16; }
address destination() const { return bcp() + offset(); }
// Attribute modification
void set_code(Bytecodes::Code code);
bool must_rewrite(Bytecodes::Code code) const { return Bytecodes::can_rewrite(code) && check_must_rewrite(code); }
// Creation
inline friend Bytecode* Bytecode_at(address bcp);
private:
void assert_index_size(int required_size) const {
#ifdef ASSERT
int isize = instruction_size() - 1;
if (isize == 2 && code() == Bytecodes::_iinc)
isize = 1;
else if (isize <= 2)
; // no change
else if (code() == Bytecodes::_invokedynamic)
isize = 4;
else
isize = 2;
assert(isize = required_size, "wrong index size");
#endif
// Static functions for parsing bytecodes in place.
int get_index_u1(Bytecodes::Code bc) const {
assert_same_format_as(bc); assert_index_size(1, bc);
return *(jubyte*)addr_at(1);
}
int get_index_u2(Bytecodes::Code bc, bool is_wide = false) const {
assert_same_format_as(bc, is_wide); assert_index_size(2, bc, is_wide);
address p = addr_at(is_wide ? 2 : 1);
if (can_use_native_byte_order(bc, is_wide))
return Bytes::get_native_u2(p);
else return Bytes::get_Java_u2(p);
}
int get_index_u2_cpcache(Bytecodes::Code bc) const {
assert_same_format_as(bc); assert_index_size(2, bc); assert_native_index(bc);
return Bytes::get_native_u2(addr_at(1)) DEBUG_ONLY(+ constantPoolOopDesc::CPCACHE_INDEX_TAG);
}
int get_index_u4(Bytecodes::Code bc) const {
assert_same_format_as(bc); assert_index_size(4, bc);
assert(can_use_native_byte_order(bc), "");
return Bytes::get_native_u4(addr_at(1));
}
bool has_index_u4(Bytecodes::Code bc) const {
return bc == Bytecodes::_invokedynamic;
}
int get_offset_s2(Bytecodes::Code bc) const {
assert_same_format_as(bc); assert_offset_size(2, bc);
return (jshort) Bytes::get_Java_u2(addr_at(1));
}
int get_offset_s4(Bytecodes::Code bc) const {
assert_same_format_as(bc); assert_offset_size(4, bc);
return (jint) Bytes::get_Java_u4(addr_at(1));
}
int get_constant_u1(int offset, Bytecodes::Code bc) const {
assert_same_format_as(bc); assert_constant_size(1, offset, bc);
return *(jbyte*)addr_at(offset);
}
int get_constant_u2(int offset, Bytecodes::Code bc, bool is_wide = false) const {
assert_same_format_as(bc, is_wide); assert_constant_size(2, offset, bc, is_wide);
return (jshort) Bytes::get_Java_u2(addr_at(offset));
}
// These are used locally and also from bytecode streams.
void assert_same_format_as(Bytecodes::Code testbc, bool is_wide = false) const NOT_DEBUG_RETURN;
static void assert_index_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN;
static void assert_offset_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN;
static void assert_constant_size(int required_size, int where, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN;
static void assert_native_index(Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN;
static bool can_use_native_byte_order(Bytecodes::Code bc, bool is_wide = false) {
return (!Bytes::is_Java_byte_ordering_different() || Bytecodes::native_byte_order(bc /*, is_wide*/));
}
};
inline Bytecode* Bytecode_at(address bcp) {
// Warning: Use with caution on live bytecode streams. 4926272
return (Bytecode*)bcp;
}
@ -124,8 +132,8 @@ class LookupswitchPair: ThisRelativeObj {
int _offset;
public:
int match() const { return java_signed_word_at(0 * jintSize); }
int offset() const { return java_signed_word_at(1 * jintSize); }
int match() const { return get_Java_u4_at(0 * jintSize); }
int offset() const { return get_Java_u4_at(1 * jintSize); }
};
@ -134,8 +142,8 @@ class Bytecode_lookupswitch: public Bytecode {
void verify() const PRODUCT_RETURN;
// Attributes
int default_offset() const { return java_signed_word_at(aligned_offset(1 + 0*jintSize)); }
int number_of_pairs() const { return java_signed_word_at(aligned_offset(1 + 1*jintSize)); }
int default_offset() const { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); }
int number_of_pairs() const { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); }
LookupswitchPair* pair_at(int i) const { assert(0 <= i && i < number_of_pairs(), "pair index out of bounds");
return (LookupswitchPair*)aligned_addr_at(1 + (1 + i)*2*jintSize); }
// Creation
@ -154,9 +162,9 @@ class Bytecode_tableswitch: public Bytecode {
void verify() const PRODUCT_RETURN;
// Attributes
int default_offset() const { return java_signed_word_at(aligned_offset(1 + 0*jintSize)); }
int low_key() const { return java_signed_word_at(aligned_offset(1 + 1*jintSize)); }
int high_key() const { return java_signed_word_at(aligned_offset(1 + 2*jintSize)); }
int default_offset() const { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); }
int low_key() const { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); }
int high_key() const { return get_Java_u4_at(aligned_offset(1 + 2*jintSize)); }
int dest_offset_at(int i) const;
int length() { return high_key()-low_key()+1; }
@ -206,7 +214,6 @@ class Bytecode_invoke: public ResourceObj {
bool is_invokedynamic() const { return adjusted_invoke_code() == Bytecodes::_invokedynamic; }
bool has_receiver() const { return !is_invokestatic() && !is_invokedynamic(); }
bool has_giant_index() const { return is_invokedynamic(); }
bool is_valid() const { return is_invokeinterface() ||
is_invokevirtual() ||
@ -252,26 +259,6 @@ inline Bytecode_field* Bytecode_field_at(const methodOop method, address bcp) {
}
// Abstraction for {get,put}static
class Bytecode_static: public Bytecode {
public:
void verify() const;
// Returns the result type of the send by inspecting the field ref
BasicType result_type(methodOop method) const;
// Creation
inline friend Bytecode_static* Bytecode_static_at(const methodOop method, address bcp);
};
inline Bytecode_static* Bytecode_static_at(const methodOop method, address bcp) {
Bytecode_static* b = (Bytecode_static*)bcp;
debug_only(b->verify());
return b;
}
// Abstraction for checkcast
class Bytecode_checkcast: public Bytecode {
@ -279,7 +266,7 @@ class Bytecode_checkcast: public Bytecode {
void verify() const { assert(Bytecodes::java_code(code()) == Bytecodes::_checkcast, "check checkcast"); }
// Returns index
long index() const { return java_hwrd_at(1); };
long index() const { return get_index_u2(Bytecodes::_checkcast); };
// Creation
inline friend Bytecode_checkcast* Bytecode_checkcast_at(address bcp);
@ -299,7 +286,7 @@ class Bytecode_instanceof: public Bytecode {
void verify() const { assert(code() == Bytecodes::_instanceof, "check instanceof"); }
// Returns index
long index() const { return java_hwrd_at(1); };
long index() const { return get_index_u2(Bytecodes::_instanceof); };
// Creation
inline friend Bytecode_instanceof* Bytecode_instanceof_at(address bcp);
@ -317,7 +304,7 @@ class Bytecode_new: public Bytecode {
void verify() const { assert(java_code() == Bytecodes::_new, "check new"); }
// Returns index
long index() const { return java_hwrd_at(1); };
long index() const { return get_index_u2(Bytecodes::_new); };
// Creation
inline friend Bytecode_new* Bytecode_new_at(address bcp);
@ -335,7 +322,7 @@ class Bytecode_multianewarray: public Bytecode {
void verify() const { assert(java_code() == Bytecodes::_multianewarray, "check new"); }
// Returns index
long index() const { return java_hwrd_at(1); };
long index() const { return get_index_u2(Bytecodes::_multianewarray); };
// Creation
inline friend Bytecode_multianewarray* Bytecode_multianewarray_at(address bcp);
@ -353,7 +340,7 @@ class Bytecode_anewarray: public Bytecode {
void verify() const { assert(java_code() == Bytecodes::_anewarray, "check anewarray"); }
// Returns index
long index() const { return java_hwrd_at(1); };
long index() const { return get_index_u2(Bytecodes::_anewarray); };
// Creation
inline friend Bytecode_anewarray* Bytecode_anewarray_at(address bcp);

23
hotspot/src/share/vm/interpreter/bytecodeStream.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -48,6 +48,25 @@ Bytecodes::Code RawBytecodeStream::raw_next_special(Bytecodes::Code code) {
}
}
}
_code = code;
_raw_code = code;
return code;
}
#ifdef ASSERT
void BaseBytecodeStream::assert_raw_index_size(int size) const {
if (raw_code() == Bytecodes::_invokedynamic && is_raw()) {
// in raw mode, pretend indy is "bJJ__"
assert(size == 2, "raw invokedynamic instruction has 2-byte index only");
} else {
bytecode()->assert_index_size(size, raw_code(), is_wide());
}
}
void BaseBytecodeStream::assert_raw_stream(bool want_raw) const {
if (want_raw) {
assert( is_raw(), "this function only works on raw streams");
} else {
assert(!is_raw(), "this function only works on non-raw streams");
}
}
#endif //ASSERT

146
hotspot/src/share/vm/interpreter/bytecodeStream.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -32,13 +32,13 @@
// while ((c = s.next()) >= 0) {
// ...
// }
//
// A RawBytecodeStream is a simple version of BytecodeStream.
// It is used ONLY when we know the bytecodes haven't been rewritten
// yet, such as in the rewriter or the verifier. Currently only the
// verifier uses this class.
// yet, such as in the rewriter or the verifier.
class RawBytecodeStream: StackObj {
// Here is the common base class for both RawBytecodeStream and BytecodeStream:
class BaseBytecodeStream: StackObj {
protected:
// stream buffer
methodHandle _method; // read from method directly
@ -49,15 +49,17 @@ class RawBytecodeStream: StackObj {
int _end_bci; // bci after the current iteration interval
// last bytecode read
Bytecodes::Code _code;
Bytecodes::Code _raw_code;
bool _is_wide;
bool _is_raw; // false in 'cooked' BytecodeStream
public:
// Construction
RawBytecodeStream(methodHandle method) : _method(method) {
BaseBytecodeStream(methodHandle method) : _method(method) {
set_interval(0, _method->code_size());
_is_raw = false;
}
public:
// Iteration control
void set_interval(int beg_bci, int end_bci) {
// iterate over the interval [beg_bci, end_bci)
@ -72,6 +74,46 @@ class RawBytecodeStream: StackObj {
set_interval(beg_bci, _method->code_size());
}
bool is_raw() const { return _is_raw; }
// Stream attributes
methodHandle method() const { return _method; }
int bci() const { return _bci; }
int next_bci() const { return _next_bci; }
int end_bci() const { return _end_bci; }
Bytecodes::Code raw_code() const { return _raw_code; }
bool is_wide() const { return _is_wide; }
int instruction_size() const { return (_next_bci - _bci); }
bool is_last_bytecode() const { return _next_bci >= _end_bci; }
address bcp() const { return method()->code_base() + _bci; }
Bytecode* bytecode() const { return Bytecode_at(bcp()); }
// State changes
void set_next_bci(int bci) { assert(0 <= bci && bci <= method()->code_size(), "illegal bci"); _next_bci = bci; }
// Bytecode-specific attributes
int dest() const { return bci() + bytecode()->get_offset_s2(raw_code()); }
int dest_w() const { return bci() + bytecode()->get_offset_s4(raw_code()); }
// One-byte indices.
int get_index_u1() const { assert_raw_index_size(1); return *(jubyte*)(bcp()+1); }
protected:
void assert_raw_index_size(int size) const NOT_DEBUG_RETURN;
void assert_raw_stream(bool want_raw) const NOT_DEBUG_RETURN;
};
class RawBytecodeStream: public BaseBytecodeStream {
public:
// Construction
RawBytecodeStream(methodHandle method) : BaseBytecodeStream(method) {
_is_raw = true;
}
public:
// Iteration
// Use raw_next() rather than next() for faster method reference
Bytecodes::Code raw_next() {
@ -80,7 +122,7 @@ class RawBytecodeStream: StackObj {
_bci = _next_bci;
assert(!is_last_bytecode(), "caller should check is_last_bytecode()");
address bcp = RawBytecodeStream::bcp();
address bcp = this->bcp();
code = Bytecodes::code_or_bp_at(bcp);
// set next bytecode position
@ -90,84 +132,49 @@ class RawBytecodeStream: StackObj {
&& code != Bytecodes::_lookupswitch, "can't be special bytecode");
_is_wide = false;
_next_bci += l;
_code = code;
_raw_code = code;
return code;
} else if (code == Bytecodes::_wide && _bci + 1 >= _end_bci) {
return Bytecodes::_illegal;
} else {
return raw_next_special(code);
}
}
Bytecodes::Code raw_next_special(Bytecodes::Code code);
// Stream attributes
methodHandle method() const { return _method; }
int bci() const { return _bci; }
int next_bci() const { return _next_bci; }
int end_bci() const { return _end_bci; }
Bytecodes::Code code() const { return _code; }
bool is_wide() const { return _is_wide; }
int instruction_size() const { return (_next_bci - _bci); }
bool is_last_bytecode() const { return _next_bci >= _end_bci; }
address bcp() const { return method()->code_base() + _bci; }
address next_bcp() { return method()->code_base() + _next_bci; }
// State changes
void set_next_bci(int bci) { assert(0 <= bci && bci <= method()->code_size(), "illegal bci"); _next_bci = bci; }
// Bytecode-specific attributes
int dest() const { return bci() + (short)Bytes::get_Java_u2(bcp() + 1); }
int dest_w() const { return bci() + (int )Bytes::get_Java_u4(bcp() + 1); }
// Unsigned indices, widening
int get_index() const { assert_index_size(is_wide() ? 2 : 1);
return (is_wide()) ? Bytes::get_Java_u2(bcp() + 2) : bcp()[1]; }
int get_index_big() const { assert_index_size(2);
return (int)Bytes::get_Java_u2(bcp() + 1); }
int get_index_int() const { return has_giant_index() ? get_index_giant() : get_index_big(); }
int get_index_giant() const { assert_index_size(4); return Bytes::get_native_u4(bcp() + 1); }
int has_giant_index() const { return (code() == Bytecodes::_invokedynamic); }
// Unsigned indices, widening, with no swapping of bytes
int get_index() const { return (is_wide()) ? get_index_u2_raw(bcp() + 2) : get_index_u1(); }
// Get an unsigned 2-byte index, with no swapping of bytes.
int get_index_u2() const { assert(!is_wide(), ""); return get_index_u2_raw(bcp() + 1); }
private:
void assert_index_size(int required_size) const {
#ifdef ASSERT
int isize = instruction_size() - (int)_is_wide - 1;
if (isize == 2 && code() == Bytecodes::_iinc)
isize = 1;
else if (isize <= 2)
; // no change
else if (has_giant_index())
isize = 4;
else
isize = 2;
assert(isize = required_size, "wrong index size");
#endif
int get_index_u2_raw(address p) const {
assert_raw_index_size(2); assert_raw_stream(true);
return Bytes::get_Java_u2(p);
}
};
// In BytecodeStream, non-java bytecodes will be translated into the
// corresponding java bytecodes.
class BytecodeStream: public RawBytecodeStream {
class BytecodeStream: public BaseBytecodeStream {
Bytecodes::Code _code;
public:
// Construction
BytecodeStream(methodHandle method) : RawBytecodeStream(method) { }
BytecodeStream(methodHandle method) : BaseBytecodeStream(method) { }
// Iteration
Bytecodes::Code next() {
Bytecodes::Code code;
Bytecodes::Code raw_code, code;
// set reading position
_bci = _next_bci;
if (is_last_bytecode()) {
// indicate end of bytecode stream
code = Bytecodes::_illegal;
raw_code = code = Bytecodes::_illegal;
} else {
// get bytecode
address bcp = BytecodeStream::bcp();
code = Bytecodes::java_code_at(bcp);
address bcp = this->bcp();
raw_code = Bytecodes::code_at(bcp);
code = Bytecodes::java_code(raw_code);
// set next bytecode position
//
// note that we cannot advance before having the
@ -181,14 +188,29 @@ class BytecodeStream: public RawBytecodeStream {
_is_wide = false;
// check for special (uncommon) cases
if (code == Bytecodes::_wide) {
code = (Bytecodes::Code)bcp[1];
raw_code = (Bytecodes::Code)bcp[1];
code = raw_code; // wide BCs are always Java-normal
_is_wide = true;
}
assert(Bytecodes::is_java_code(code), "sanity check");
}
_raw_code = raw_code;
_code = code;
return _code;
}
bool is_active_breakpoint() const { return Bytecodes::is_active_breakpoint_at(bcp()); }
Bytecodes::Code code() const { return _code; }
// Unsigned indices, widening
int get_index() const { return is_wide() ? bytecode()->get_index_u2(raw_code(), true) : get_index_u1(); }
// Get an unsigned 2-byte index, swapping the bytes if necessary.
int get_index_u2() const { assert_raw_stream(false);
return bytecode()->get_index_u2(raw_code(), false); }
// Get an unsigned 2-byte index in native order.
int get_index_u2_cpcache() const { assert_raw_stream(false);
return bytecode()->get_index_u2_cpcache(raw_code()); }
int get_index_u4() const { assert_raw_stream(false);
return bytecode()->get_index_u4(raw_code()); }
int has_index_u4() const { return bytecode()->get_index_u4(raw_code()); }
};

81
hotspot/src/share/vm/interpreter/bytecodeTracer.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -39,6 +39,7 @@ class BytecodePrinter: public BytecodeClosure {
// (Also, ensure that occasional false positives are benign.)
methodOop _current_method;
bool _is_wide;
Bytecodes::Code _code;
address _next_pc; // current decoding position
void align() { _next_pc = (address)round_to((intptr_t)_next_pc, sizeof(jint)); }
@ -46,23 +47,26 @@ class BytecodePrinter: public BytecodeClosure {
short get_short() { short i=Bytes::get_Java_u2(_next_pc); _next_pc+=2; return i; }
int get_int() { int i=Bytes::get_Java_u4(_next_pc); _next_pc+=4; return i; }
int get_index() { return *(address)_next_pc++; }
int get_big_index() { int i=Bytes::get_Java_u2(_next_pc); _next_pc+=2; return i; }
int get_giant_index() { int i=Bytes::get_native_u4(_next_pc); _next_pc+=4; return i; }
int get_index_special() { return (is_wide()) ? get_big_index() : get_index(); }
int get_index_u1() { return *(address)_next_pc++; }
int get_index_u2() { int i=Bytes::get_Java_u2(_next_pc); _next_pc+=2; return i; }
int get_index_u2_cpcache() { int i=Bytes::get_native_u2(_next_pc); _next_pc+=2; return i + constantPoolOopDesc::CPCACHE_INDEX_TAG; }
int get_index_u4() { int i=Bytes::get_native_u4(_next_pc); _next_pc+=4; return i; }
int get_index_special() { return (is_wide()) ? get_index_u2() : get_index_u1(); }
methodOop method() { return _current_method; }
bool is_wide() { return _is_wide; }
Bytecodes::Code raw_code() { return Bytecodes::Code(_code); }
bool check_index(int i, bool in_cp_cache, int& cp_index, outputStream* st = tty);
bool check_index(int i, int& cp_index, outputStream* st = tty);
void print_constant(int i, outputStream* st = tty);
void print_field_or_method(int i, outputStream* st = tty);
void print_attributes(Bytecodes::Code code, int bci, outputStream* st = tty);
void print_attributes(int bci, outputStream* st = tty);
void bytecode_epilog(int bci, outputStream* st = tty);
public:
BytecodePrinter() {
_is_wide = false;
_code = Bytecodes::_illegal;
}
// This method is called while executing the raw bytecodes, so none of
@ -89,7 +93,8 @@ class BytecodePrinter: public BytecodeClosure {
} else {
code = Bytecodes::code_at(bcp);
}
int bci = bcp - method->code_base();
_code = code;
int bci = bcp - method->code_base();
st->print("[%d] ", (int) Thread::current()->osthread()->thread_id());
if (Verbose) {
st->print("%8d %4d " INTPTR_FORMAT " " INTPTR_FORMAT " %s",
@ -99,10 +104,11 @@ class BytecodePrinter: public BytecodeClosure {
BytecodeCounter::counter_value(), bci, Bytecodes::name(code));
}
_next_pc = is_wide() ? bcp+2 : bcp+1;
print_attributes(code, bci);
print_attributes(bci);
// Set is_wide for the next one, since the caller of this doesn't skip
// the next bytecode.
_is_wide = (code == Bytecodes::_wide);
_code = Bytecodes::_illegal;
}
// Used for methodOop::print_codes(). The input bcp comes from
@ -116,6 +122,7 @@ class BytecodePrinter: public BytecodeClosure {
if (is_wide()) {
code = Bytecodes::code_at(bcp+1);
}
_code = code;
int bci = bcp - method->code_base();
// Print bytecode index and name
if (is_wide()) {
@ -124,7 +131,7 @@ class BytecodePrinter: public BytecodeClosure {
st->print("%d %s", bci, Bytecodes::name(code));
}
_next_pc = is_wide() ? bcp+2 : bcp+1;
print_attributes(code, bci, st);
print_attributes(bci, st);
bytecode_epilog(bci, st);
}
};
@ -185,12 +192,13 @@ void print_oop(oop value, outputStream* st) {
}
}
bool BytecodePrinter::check_index(int i, bool in_cp_cache, int& cp_index, outputStream* st) {
bool BytecodePrinter::check_index(int i, int& cp_index, outputStream* st) {
constantPoolOop constants = method()->constants();
int ilimit = constants->length(), climit = 0;
Bytecodes::Code code = raw_code();
constantPoolCacheOop cache = NULL;
if (in_cp_cache) {
if (Bytecodes::uses_cp_cache(code)) {
cache = constants->cache();
if (cache != NULL) {
//climit = cache->length(); // %%% private!
@ -201,7 +209,7 @@ bool BytecodePrinter::check_index(int i, bool in_cp_cache, int& cp_index, output
}
}
if (in_cp_cache && constantPoolCacheOopDesc::is_secondary_index(i)) {
if (cache != NULL && constantPoolCacheOopDesc::is_secondary_index(i)) {
i = constantPoolCacheOopDesc::decode_secondary_index(i);
st->print(" secondary cache[%d] of", i);
if (i >= 0 && i < climit) {
@ -218,8 +226,6 @@ bool BytecodePrinter::check_index(int i, bool in_cp_cache, int& cp_index, output
}
if (cache != NULL) {
i = Bytes::swap_u2(i);
if (WizardMode) st->print(" (swap=%d)", i);
goto check_cache_index;
}
@ -234,6 +240,17 @@ bool BytecodePrinter::check_index(int i, bool in_cp_cache, int& cp_index, output
return false;
check_cache_index:
#ifdef ASSERT
{
const int CPCACHE_INDEX_TAG = constantPoolOopDesc::CPCACHE_INDEX_TAG;
if (i >= CPCACHE_INDEX_TAG && i < climit + CPCACHE_INDEX_TAG) {
i -= CPCACHE_INDEX_TAG;
} else {
st->print_cr(" CP[%d] missing bias?", i);
return false;
}
}
#endif //ASSERT
if (i >= 0 && i < climit) {
if (cache->entry_at(i)->is_secondary_entry()) {
st->print_cr(" secondary entry?");
@ -248,7 +265,7 @@ bool BytecodePrinter::check_index(int i, bool in_cp_cache, int& cp_index, output
void BytecodePrinter::print_constant(int i, outputStream* st) {
int orig_i = i;
if (!check_index(orig_i, false, i, st)) return;
if (!check_index(orig_i, i, st)) return;
constantPoolOop constants = method()->constants();
constantTag tag = constants->tag_at(i);
@ -279,7 +296,7 @@ void BytecodePrinter::print_constant(int i, outputStream* st) {
void BytecodePrinter::print_field_or_method(int i, outputStream* st) {
int orig_i = i;
if (!check_index(orig_i, true, i, st)) return;
if (!check_index(orig_i, i, st)) return;
constantPoolOop constants = method()->constants();
constantTag tag = constants->tag_at(i);
@ -303,9 +320,9 @@ void BytecodePrinter::print_field_or_method(int i, outputStream* st) {
}
void BytecodePrinter::print_attributes(Bytecodes::Code code, int bci, outputStream* st) {
void BytecodePrinter::print_attributes(int bci, outputStream* st) {
// Show attributes of pre-rewritten codes
code = Bytecodes::java_code(code);
Bytecodes::Code code = Bytecodes::java_code(raw_code());
// If the code doesn't have any fields there's nothing to print.
// note this is ==1 because the tableswitch and lookupswitch are
// zero size (for some reason) and we want to print stuff out for them.
@ -323,12 +340,12 @@ void BytecodePrinter::print_attributes(Bytecodes::Code code, int bci, outputStre
st->print_cr(" " INT32_FORMAT, get_short());
break;
case Bytecodes::_ldc:
print_constant(get_index(), st);
print_constant(get_index_u1(), st);
break;
case Bytecodes::_ldc_w:
case Bytecodes::_ldc2_w:
print_constant(get_big_index(), st);
print_constant(get_index_u2(), st);
break;
case Bytecodes::_iload:
@ -352,7 +369,7 @@ void BytecodePrinter::print_attributes(Bytecodes::Code code, int bci, outputStre
break;
case Bytecodes::_newarray: {
BasicType atype = (BasicType)get_index();
BasicType atype = (BasicType)get_index_u1();
const char* str = type2name(atype);
if (str == NULL || atype == T_OBJECT || atype == T_ARRAY) {
assert(false, "Unidentified basic type");
@ -361,15 +378,15 @@ void BytecodePrinter::print_attributes(Bytecodes::Code code, int bci, outputStre
}
break;
case Bytecodes::_anewarray: {
int klass_index = get_big_index();
int klass_index = get_index_u2();
constantPoolOop constants = method()->constants();
symbolOop name = constants->klass_name_at(klass_index);
st->print_cr(" %s ", name->as_C_string());
}
break;
case Bytecodes::_multianewarray: {
int klass_index = get_big_index();
int nof_dims = get_index();
int klass_index = get_index_u2();
int nof_dims = get_index_u1();
constantPoolOop constants = method()->constants();
symbolOop name = constants->klass_name_at(klass_index);
st->print_cr(" %s %d", name->as_C_string(), nof_dims);
@ -451,31 +468,31 @@ void BytecodePrinter::print_attributes(Bytecodes::Code code, int bci, outputStre
case Bytecodes::_getstatic:
case Bytecodes::_putfield:
case Bytecodes::_getfield:
print_field_or_method(get_big_index(), st);
print_field_or_method(get_index_u2_cpcache(), st);
break;
case Bytecodes::_invokevirtual:
case Bytecodes::_invokespecial:
case Bytecodes::_invokestatic:
print_field_or_method(get_big_index(), st);
print_field_or_method(get_index_u2_cpcache(), st);
break;
case Bytecodes::_invokeinterface:
{ int i = get_big_index();
int n = get_index();
get_index(); // ignore zero byte
{ int i = get_index_u2_cpcache();
int n = get_index_u1();
get_byte(); // ignore zero byte
print_field_or_method(i, st);
}
break;
case Bytecodes::_invokedynamic:
print_field_or_method(get_giant_index(), st);
print_field_or_method(get_index_u4(), st);
break;
case Bytecodes::_new:
case Bytecodes::_checkcast:
case Bytecodes::_instanceof:
{ int i = get_big_index();
{ int i = get_index_u2();
constantPoolOop constants = method()->constants();
symbolOop name = constants->klass_name_at(i);
st->print_cr(" %d <%s>", i, name->as_C_string());

187
hotspot/src/share/vm/interpreter/bytecodes.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -35,14 +35,11 @@
bool Bytecodes::_is_initialized = false;
const char* Bytecodes::_name [Bytecodes::number_of_codes];
const char* Bytecodes::_format [Bytecodes::number_of_codes];
const char* Bytecodes::_wide_format [Bytecodes::number_of_codes];
BasicType Bytecodes::_result_type [Bytecodes::number_of_codes];
s_char Bytecodes::_depth [Bytecodes::number_of_codes];
u_char Bytecodes::_length [Bytecodes::number_of_codes];
bool Bytecodes::_can_trap [Bytecodes::number_of_codes];
u_char Bytecodes::_lengths [Bytecodes::number_of_codes];
Bytecodes::Code Bytecodes::_java_code [Bytecodes::number_of_codes];
bool Bytecodes::_can_rewrite [Bytecodes::number_of_codes];
u_short Bytecodes::_flags [(1<<BitsPerByte)*2];
Bytecodes::Code Bytecodes::code_at(methodOop method, int bci) {
@ -122,15 +119,22 @@ void Bytecodes::def(Code code, const char* name, const char* format, const char*
void Bytecodes::def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap, Code java_code) {
assert(wide_format == NULL || format != NULL, "short form must exist if there's a wide form");
int len = (format != NULL ? (int) strlen(format) : 0);
int wlen = (wide_format != NULL ? (int) strlen(wide_format) : 0);
_name [code] = name;
_format [code] = format;
_wide_format [code] = wide_format;
_result_type [code] = result_type;
_depth [code] = depth;
_can_trap [code] = can_trap;
_length [code] = format != NULL ? (u_char)strlen(format) : 0;
_lengths [code] = (wlen << 4) | (len & 0xF);
_java_code [code] = java_code;
if (java_code != code) _can_rewrite[java_code] = true;
int bc_flags = 0;
if (can_trap) bc_flags |= _bc_can_trap;
if (java_code != code) bc_flags |= _bc_can_rewrite;
_flags[(u1)code+0*(1<<BitsPerByte)] = compute_flags(format, bc_flags);
_flags[(u1)code+1*(1<<BitsPerByte)] = compute_flags(wide_format, bc_flags);
assert(is_defined(code) == (format != NULL), "");
assert(wide_is_defined(code) == (wide_format != NULL), "");
assert(length_for(code) == len, "");
assert(wide_length_for(code) == wlen, "");
}
@ -138,23 +142,92 @@ void Bytecodes::def(Code code, const char* name, const char* format, const char*
//
// b: bytecode
// c: signed constant, Java byte-ordering
// i: unsigned index , Java byte-ordering
// j: unsigned index , native byte-ordering
// o: branch offset , Java byte-ordering
// i: unsigned local index, Java byte-ordering (I = native byte ordering)
// j: unsigned CP cache index, Java byte-ordering (J = native byte ordering)
// k: unsigned CP index, Java byte-ordering
// o: branch offset, Java byte-ordering
// _: unused/ignored
// w: wide bytecode
//
// Note: Right now the format strings are used for 2 purposes:
// Note: The format strings are used for 2 purposes:
// 1. to specify the length of the bytecode
// (= number of characters in format string)
// 2. to specify the bytecode attributes
//
// The bytecode attributes are currently used only for bytecode tracing
// (see BytecodeTracer); thus if more specific format information is
// used, one would also have to adjust the bytecode tracer.
// 2. to derive bytecode format flags (_fmt_has_k, etc.)
//
// Note: For bytecodes with variable length, the format string is the empty string.
int Bytecodes::compute_flags(const char* format, int more_flags) {
if (format == NULL) return 0; // not even more_flags
int flags = more_flags;
const char* fp = format;
switch (*fp) {
case '\0':
flags |= _fmt_not_simple; // but variable
break;
case 'b':
flags |= _fmt_not_variable; // but simple
++fp; // skip 'b'
break;
case 'w':
flags |= _fmt_not_variable | _fmt_not_simple;
++fp; // skip 'w'
guarantee(*fp == 'b', "wide format must start with 'wb'");
++fp; // skip 'b'
break;
}
int has_nbo = 0, has_jbo = 0, has_size = 0;
for (;;) {
int this_flag = 0;
char fc = *fp++;
switch (fc) {
case '\0': // end of string
assert(flags == (jchar)flags, "change _format_flags");
return flags;
case '_': continue; // ignore these
case 'j': this_flag = _fmt_has_j; has_jbo = 1; break;
case 'k': this_flag = _fmt_has_k; has_jbo = 1; break;
case 'i': this_flag = _fmt_has_i; has_jbo = 1; break;
case 'c': this_flag = _fmt_has_c; has_jbo = 1; break;
case 'o': this_flag = _fmt_has_o; has_jbo = 1; break;
// uppercase versions mark native byte order (from Rewriter)
// actually, only the 'J' case happens currently
case 'J': this_flag = _fmt_has_j; has_nbo = 1; break;
case 'K': this_flag = _fmt_has_k; has_nbo = 1; break;
case 'I': this_flag = _fmt_has_i; has_nbo = 1; break;
case 'C': this_flag = _fmt_has_c; has_nbo = 1; break;
case 'O': this_flag = _fmt_has_o; has_nbo = 1; break;
default: guarantee(false, "bad char in format");
}
flags |= this_flag;
guarantee(!(has_jbo && has_nbo), "mixed byte orders in format");
if (has_nbo)
flags |= _fmt_has_nbo;
int this_size = 1;
if (*fp == fc) {
// advance beyond run of the same characters
this_size = 2;
while (*++fp == fc) this_size++;
switch (this_size) {
case 2: flags |= _fmt_has_u2; break;
case 4: flags |= _fmt_has_u4; break;
default: guarantee(false, "bad rep count in format");
}
}
guarantee(has_size == 0 || // no field yet
this_size == has_size || // same size
this_size < has_size && *fp == '\0', // last field can be short
"mixed field sizes in format");
has_size = this_size;
}
}
void Bytecodes::initialize() {
if (_is_initialized) return;
assert(number_of_codes <= 256, "too many bytecodes");
@ -189,9 +262,9 @@ void Bytecodes::initialize() {
def(_dconst_1 , "dconst_1" , "b" , NULL , T_DOUBLE , 2, false);
def(_bipush , "bipush" , "bc" , NULL , T_INT , 1, false);
def(_sipush , "sipush" , "bcc" , NULL , T_INT , 1, false);
def(_ldc , "ldc" , "bi" , NULL , T_ILLEGAL, 1, true );
def(_ldc_w , "ldc_w" , "bii" , NULL , T_ILLEGAL, 1, true );
def(_ldc2_w , "ldc2_w" , "bii" , NULL , T_ILLEGAL, 2, true );
def(_ldc , "ldc" , "bk" , NULL , T_ILLEGAL, 1, true );
def(_ldc_w , "ldc_w" , "bkk" , NULL , T_ILLEGAL, 1, true );
def(_ldc2_w , "ldc2_w" , "bkk" , NULL , T_ILLEGAL, 2, true );
def(_iload , "iload" , "bi" , "wbii" , T_INT , 1, false);
def(_lload , "lload" , "bi" , "wbii" , T_LONG , 2, false);
def(_fload , "fload" , "bi" , "wbii" , T_FLOAT , 1, false);
@ -349,26 +422,26 @@ void Bytecodes::initialize() {
def(_dreturn , "dreturn" , "b" , NULL , T_DOUBLE , -2, true);
def(_areturn , "areturn" , "b" , NULL , T_OBJECT , -1, true);
def(_return , "return" , "b" , NULL , T_VOID , 0, true);
def(_getstatic , "getstatic" , "bjj" , NULL , T_ILLEGAL, 1, true );
def(_putstatic , "putstatic" , "bjj" , NULL , T_ILLEGAL, -1, true );
def(_getfield , "getfield" , "bjj" , NULL , T_ILLEGAL, 0, true );
def(_putfield , "putfield" , "bjj" , NULL , T_ILLEGAL, -2, true );
def(_invokevirtual , "invokevirtual" , "bjj" , NULL , T_ILLEGAL, -1, true);
def(_invokespecial , "invokespecial" , "bjj" , NULL , T_ILLEGAL, -1, true);
def(_invokestatic , "invokestatic" , "bjj" , NULL , T_ILLEGAL, 0, true);
def(_invokeinterface , "invokeinterface" , "bjj__", NULL , T_ILLEGAL, -1, true);
def(_invokedynamic , "invokedynamic" , "bjjjj", NULL , T_ILLEGAL, 0, true );
def(_new , "new" , "bii" , NULL , T_OBJECT , 1, true );
def(_getstatic , "getstatic" , "bJJ" , NULL , T_ILLEGAL, 1, true );
def(_putstatic , "putstatic" , "bJJ" , NULL , T_ILLEGAL, -1, true );
def(_getfield , "getfield" , "bJJ" , NULL , T_ILLEGAL, 0, true );
def(_putfield , "putfield" , "bJJ" , NULL , T_ILLEGAL, -2, true );
def(_invokevirtual , "invokevirtual" , "bJJ" , NULL , T_ILLEGAL, -1, true);
def(_invokespecial , "invokespecial" , "bJJ" , NULL , T_ILLEGAL, -1, true);
def(_invokestatic , "invokestatic" , "bJJ" , NULL , T_ILLEGAL, 0, true);
def(_invokeinterface , "invokeinterface" , "bJJ__", NULL , T_ILLEGAL, -1, true);
def(_invokedynamic , "invokedynamic" , "bJJJJ", NULL , T_ILLEGAL, 0, true );
def(_new , "new" , "bkk" , NULL , T_OBJECT , 1, true );
def(_newarray , "newarray" , "bc" , NULL , T_OBJECT , 0, true );
def(_anewarray , "anewarray" , "bii" , NULL , T_OBJECT , 0, true );
def(_anewarray , "anewarray" , "bkk" , NULL , T_OBJECT , 0, true );
def(_arraylength , "arraylength" , "b" , NULL , T_VOID , 0, true );
def(_athrow , "athrow" , "b" , NULL , T_VOID , -1, true );
def(_checkcast , "checkcast" , "bii" , NULL , T_OBJECT , 0, true );
def(_instanceof , "instanceof" , "bii" , NULL , T_INT , 0, true );
def(_checkcast , "checkcast" , "bkk" , NULL , T_OBJECT , 0, true );
def(_instanceof , "instanceof" , "bkk" , NULL , T_INT , 0, true );
def(_monitorenter , "monitorenter" , "b" , NULL , T_VOID , -1, true );
def(_monitorexit , "monitorexit" , "b" , NULL , T_VOID , -1, true );
def(_wide , "wide" , "" , NULL , T_VOID , 0, false);
def(_multianewarray , "multianewarray" , "biic" , NULL , T_OBJECT , 1, true );
def(_multianewarray , "multianewarray" , "bkkc" , NULL , T_OBJECT , 1, true );
def(_ifnull , "ifnull" , "boo" , NULL , T_VOID , -1, false);
def(_ifnonnull , "ifnonnull" , "boo" , NULL , T_VOID , -1, false);
def(_goto_w , "goto_w" , "boooo", NULL , T_VOID , 0, false);
@ -378,35 +451,35 @@ void Bytecodes::initialize() {
// JVM bytecodes
// bytecode bytecode name format wide f. result tp stk traps std code
def(_fast_agetfield , "fast_agetfield" , "bjj" , NULL , T_OBJECT , 0, true , _getfield );
def(_fast_bgetfield , "fast_bgetfield" , "bjj" , NULL , T_INT , 0, true , _getfield );
def(_fast_cgetfield , "fast_cgetfield" , "bjj" , NULL , T_CHAR , 0, true , _getfield );
def(_fast_dgetfield , "fast_dgetfield" , "bjj" , NULL , T_DOUBLE , 0, true , _getfield );
def(_fast_fgetfield , "fast_fgetfield" , "bjj" , NULL , T_FLOAT , 0, true , _getfield );
def(_fast_igetfield , "fast_igetfield" , "bjj" , NULL , T_INT , 0, true , _getfield );
def(_fast_lgetfield , "fast_lgetfield" , "bjj" , NULL , T_LONG , 0, true , _getfield );
def(_fast_sgetfield , "fast_sgetfield" , "bjj" , NULL , T_SHORT , 0, true , _getfield );
def(_fast_agetfield , "fast_agetfield" , "bJJ" , NULL , T_OBJECT , 0, true , _getfield );
def(_fast_bgetfield , "fast_bgetfield" , "bJJ" , NULL , T_INT , 0, true , _getfield );
def(_fast_cgetfield , "fast_cgetfield" , "bJJ" , NULL , T_CHAR , 0, true , _getfield );
def(_fast_dgetfield , "fast_dgetfield" , "bJJ" , NULL , T_DOUBLE , 0, true , _getfield );
def(_fast_fgetfield , "fast_fgetfield" , "bJJ" , NULL , T_FLOAT , 0, true , _getfield );
def(_fast_igetfield , "fast_igetfield" , "bJJ" , NULL , T_INT , 0, true , _getfield );
def(_fast_lgetfield , "fast_lgetfield" , "bJJ" , NULL , T_LONG , 0, true , _getfield );
def(_fast_sgetfield , "fast_sgetfield" , "bJJ" , NULL , T_SHORT , 0, true , _getfield );
def(_fast_aputfield , "fast_aputfield" , "bjj" , NULL , T_OBJECT , 0, true , _putfield );
def(_fast_bputfield , "fast_bputfield" , "bjj" , NULL , T_INT , 0, true , _putfield );
def(_fast_cputfield , "fast_cputfield" , "bjj" , NULL , T_CHAR , 0, true , _putfield );
def(_fast_dputfield , "fast_dputfield" , "bjj" , NULL , T_DOUBLE , 0, true , _putfield );
def(_fast_fputfield , "fast_fputfield" , "bjj" , NULL , T_FLOAT , 0, true , _putfield );
def(_fast_iputfield , "fast_iputfield" , "bjj" , NULL , T_INT , 0, true , _putfield );
def(_fast_lputfield , "fast_lputfield" , "bjj" , NULL , T_LONG , 0, true , _putfield );
def(_fast_sputfield , "fast_sputfield" , "bjj" , NULL , T_SHORT , 0, true , _putfield );
def(_fast_aputfield , "fast_aputfield" , "bJJ" , NULL , T_OBJECT , 0, true , _putfield );
def(_fast_bputfield , "fast_bputfield" , "bJJ" , NULL , T_INT , 0, true , _putfield );
def(_fast_cputfield , "fast_cputfield" , "bJJ" , NULL , T_CHAR , 0, true , _putfield );
def(_fast_dputfield , "fast_dputfield" , "bJJ" , NULL , T_DOUBLE , 0, true , _putfield );
def(_fast_fputfield , "fast_fputfield" , "bJJ" , NULL , T_FLOAT , 0, true , _putfield );
def(_fast_iputfield , "fast_iputfield" , "bJJ" , NULL , T_INT , 0, true , _putfield );
def(_fast_lputfield , "fast_lputfield" , "bJJ" , NULL , T_LONG , 0, true , _putfield );
def(_fast_sputfield , "fast_sputfield" , "bJJ" , NULL , T_SHORT , 0, true , _putfield );
def(_fast_aload_0 , "fast_aload_0" , "b" , NULL , T_OBJECT , 1, true , _aload_0 );
def(_fast_iaccess_0 , "fast_iaccess_0" , "b_jj" , NULL , T_INT , 1, true , _aload_0 );
def(_fast_aaccess_0 , "fast_aaccess_0" , "b_jj" , NULL , T_OBJECT , 1, true , _aload_0 );
def(_fast_faccess_0 , "fast_faccess_0" , "b_jj" , NULL , T_OBJECT , 1, true , _aload_0 );
def(_fast_iaccess_0 , "fast_iaccess_0" , "b_JJ" , NULL , T_INT , 1, true , _aload_0 );
def(_fast_aaccess_0 , "fast_aaccess_0" , "b_JJ" , NULL , T_OBJECT , 1, true , _aload_0 );
def(_fast_faccess_0 , "fast_faccess_0" , "b_JJ" , NULL , T_OBJECT , 1, true , _aload_0 );
def(_fast_iload , "fast_iload" , "bi" , NULL , T_INT , 1, false, _iload);
def(_fast_iload2 , "fast_iload2" , "bi_i" , NULL , T_INT , 2, false, _iload);
def(_fast_icaload , "fast_icaload" , "bi_" , NULL , T_INT , 0, false, _iload);
// Faster method invocation.
def(_fast_invokevfinal , "fast_invokevfinal" , "bjj" , NULL , T_ILLEGAL, -1, true, _invokevirtual );
def(_fast_invokevfinal , "fast_invokevfinal" , "bJJ" , NULL , T_ILLEGAL, -1, true, _invokevirtual );
def(_fast_linearswitch , "fast_linearswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch );
def(_fast_binaryswitch , "fast_binaryswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch );

70
hotspot/src/share/vm/interpreter/bytecodes.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -280,17 +280,43 @@ class Bytecodes: AllStatic {
number_of_codes
};
// Flag bits derived from format strings, can_trap, can_rewrite, etc.:
enum Flags {
// semantic flags:
_bc_can_trap = 1<<0, // bytecode execution can trap or block
_bc_can_rewrite = 1<<1, // bytecode execution has an alternate form
// format bits (determined only by the format string):
_fmt_has_c = 1<<2, // constant, such as sipush "bcc"
_fmt_has_j = 1<<3, // constant pool cache index, such as getfield "bjj"
_fmt_has_k = 1<<4, // constant pool index, such as ldc "bk"
_fmt_has_i = 1<<5, // local index, such as iload
_fmt_has_o = 1<<6, // offset, such as ifeq
_fmt_has_nbo = 1<<7, // contains native-order field(s)
_fmt_has_u2 = 1<<8, // contains double-byte field(s)
_fmt_has_u4 = 1<<9, // contains quad-byte field
_fmt_not_variable = 1<<10, // not of variable length (simple or wide)
_fmt_not_simple = 1<<11, // either wide or variable length
_all_fmt_bits = (_fmt_not_simple*2 - _fmt_has_c),
// Example derived format syndromes:
_fmt_b = _fmt_not_variable,
_fmt_bc = _fmt_b | _fmt_has_c,
_fmt_bi = _fmt_b | _fmt_has_i,
_fmt_bkk = _fmt_b | _fmt_has_k | _fmt_has_u2,
_fmt_bJJ = _fmt_b | _fmt_has_j | _fmt_has_u2 | _fmt_has_nbo,
_fmt_bo2 = _fmt_b | _fmt_has_o | _fmt_has_u2,
_fmt_bo4 = _fmt_b | _fmt_has_o | _fmt_has_u4
};
private:
static bool _is_initialized;
static const char* _name [number_of_codes];
static const char* _format [number_of_codes];
static const char* _wide_format [number_of_codes];
static BasicType _result_type [number_of_codes];
static s_char _depth [number_of_codes];
static u_char _length [number_of_codes];
static bool _can_trap [number_of_codes];
static u_char _lengths [number_of_codes];
static Code _java_code [number_of_codes];
static bool _can_rewrite [number_of_codes];
static jchar _flags [(1<<BitsPerByte)*2]; // all second page for wide formats
static void def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap);
static void def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap, Code java_code);
@ -322,24 +348,18 @@ class Bytecodes: AllStatic {
static Code non_breakpoint_code_at(address bcp, methodOop method = NULL);
// Bytecode attributes
static bool is_defined (int code) { return 0 <= code && code < number_of_codes && _format[code] != NULL; }
static bool wide_is_defined(int code) { return is_defined(code) && _wide_format[code] != NULL; }
static bool is_defined (int code) { return 0 <= code && code < number_of_codes && flags(code, false) != 0; }
static bool wide_is_defined(int code) { return is_defined(code) && flags(code, true) != 0; }
static const char* name (Code code) { check(code); return _name [code]; }
static const char* format (Code code) { check(code); return _format [code]; }
static const char* wide_format (Code code) { return _wide_format[code]; }
static BasicType result_type (Code code) { check(code); return _result_type [code]; }
static int depth (Code code) { check(code); return _depth [code]; }
static int length_for (Code code) { return _length[code]; }
static bool can_trap (Code code) { check(code); return _can_trap [code]; }
static int length_for (Code code) { check(code); return _lengths [code] & 0xF; }
static int wide_length_for(Code code) { check(code); return _lengths [code] >> 4; }
static bool can_trap (Code code) { check(code); return has_all_flags(code, _bc_can_trap, false); }
static Code java_code (Code code) { check(code); return _java_code [code]; }
static bool can_rewrite (Code code) { check(code); return _can_rewrite [code]; }
static int wide_length_for(Code code) {
if (!is_defined(code)) {
return 0;
}
const char* wf = wide_format(code);
return (wf == NULL) ? 0 : (int)strlen(wf);
}
static bool can_rewrite (Code code) { check(code); return has_all_flags(code, _bc_can_rewrite, false); }
static bool native_byte_order(Code code) { check(code); return has_all_flags(code, _fmt_has_nbo, false); }
static bool uses_cp_cache (Code code) { check(code); return has_all_flags(code, _fmt_has_j, false); }
// if 'end' is provided, it indicates the end of the code buffer which
// should not be read past when parsing.
static int special_length_at(address bcp, address end = NULL);
@ -355,6 +375,16 @@ class Bytecodes: AllStatic {
static bool is_zero_const (Code code) { return (code == _aconst_null || code == _iconst_0
|| code == _fconst_0 || code == _dconst_0); }
static int compute_flags (const char* format, int more_flags = 0); // compute the flags
static int flags (int code, bool is_wide) {
assert(code == (u_char)code, "must be a byte");
return _flags[code + (is_wide ? (1<<BitsPerByte) : 0)];
}
static int format_bits (Code code, bool is_wide) { return flags(code, is_wide) & _all_fmt_bits; }
static bool has_all_flags (Code code, int test_flags, bool is_wide) {
return (flags(code, is_wide) & test_flags) == test_flags;
}
// Initialization
static void initialize ();
};

5
hotspot/src/share/vm/interpreter/interpreter.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -226,8 +226,9 @@ AbstractInterpreter::MethodKind AbstractInterpreter::method_kind(methodHandle m)
// not yet been executed (in Java semantics, not in actual operation).
bool AbstractInterpreter::is_not_reached(methodHandle method, int bci) {
address bcp = method->bcp_from(bci);
Bytecodes::Code code = Bytecodes::code_at(bcp, method());
if (!Bytecode_at(bcp)->must_rewrite()) {
if (!Bytecode_at(bcp)->must_rewrite(code)) {
// might have been reached
return false;
}

14
hotspot/src/share/vm/interpreter/interpreterRuntime.cpp
View File

@ -63,7 +63,7 @@ void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) {
IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide))
// access constant pool
constantPoolOop pool = method(thread)->constants();
int index = wide ? two_byte_index(thread) : one_byte_index(thread);
int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc);
constantTag tag = pool->tag_at(index);
if (tag.is_unresolved_klass() || tag.is_klass()) {
@ -135,7 +135,7 @@ IRT_END
IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address))
// We may want to pass in more arguments - could make this slightly faster
constantPoolOop constants = method(thread)->constants();
int i = two_byte_index(thread);
int i = get_index_u2(thread, Bytecodes::_multianewarray);
klassOop klass = constants->klass_at(i, CHECK);
int nof_dims = number_of_dimensions(thread);
assert(oop(klass)->is_klass(), "not a class");
@ -169,7 +169,7 @@ IRT_END
// Quicken instance-of and check-cast bytecodes
IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread))
// Force resolving; quicken the bytecode
int which = two_byte_index(thread);
int which = get_index_u2(thread, Bytecodes::_checkcast);
constantPoolOop cpool = method(thread)->constants();
// We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded
// program we might have seen an unquick'd bytecode in the interpreter but have another
@ -463,7 +463,7 @@ IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecode
{
JvmtiHideSingleStepping jhss(thread);
LinkResolver::resolve_field(info, pool, two_byte_index(thread),
LinkResolver::resolve_field(info, pool, get_index_u2_cpcache(thread, bytecode),
bytecode, false, CHECK);
} // end JvmtiHideSingleStepping
@ -634,7 +634,7 @@ IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes
{
JvmtiHideSingleStepping jhss(thread);
LinkResolver::resolve_invoke(info, receiver, pool,
two_byte_index(thread), bytecode, CHECK);
get_index_u2_cpcache(thread, bytecode), bytecode, CHECK);
if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
int retry_count = 0;
while (info.resolved_method()->is_old()) {
@ -645,7 +645,7 @@ IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes
"Could not resolve to latest version of redefined method");
// method is redefined in the middle of resolve so re-try.
LinkResolver::resolve_invoke(info, receiver, pool,
two_byte_index(thread), bytecode, CHECK);
get_index_u2_cpcache(thread, bytecode), bytecode, CHECK);
}
}
} // end JvmtiHideSingleStepping
@ -704,7 +704,7 @@ IRT_ENTRY(void, InterpreterRuntime::resolve_invokedynamic(JavaThread* thread)) {
caller_bci = caller_method->bci_from(caller_bcp);
site_index = Bytes::get_native_u4(caller_bcp+1);
}
assert(site_index == four_byte_index(thread), "");
assert(site_index == InterpreterRuntime::bytecode(thread)->get_index_u4(bytecode), "");
assert(constantPoolCacheOopDesc::is_secondary_index(site_index), "proper format");
// there is a second CPC entries that is of interest; it caches signature info:
int main_index = pool->cache()->secondary_entry_at(site_index)->main_entry_index();

12
hotspot/src/share/vm/interpreter/interpreterRuntime.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -40,9 +40,13 @@ class InterpreterRuntime: AllStatic {
return Bytecodes::code_at(bcp(thread), method(thread));
}
static bool already_resolved(JavaThread *thread) { return cache_entry(thread)->is_resolved(code(thread)); }
static int one_byte_index(JavaThread *thread) { return bcp(thread)[1]; }
static int two_byte_index(JavaThread *thread) { return Bytes::get_Java_u2(bcp(thread) + 1); }
static int four_byte_index(JavaThread *thread) { return Bytes::get_native_u4(bcp(thread) + 1); }
static Bytecode* bytecode(JavaThread *thread) { return Bytecode_at(bcp(thread)); }
static int get_index_u1(JavaThread *thread, Bytecodes::Code bc)
{ return bytecode(thread)->get_index_u1(bc); }
static int get_index_u2(JavaThread *thread, Bytecodes::Code bc)
{ return bytecode(thread)->get_index_u2(bc); }
static int get_index_u2_cpcache(JavaThread *thread, Bytecodes::Code bc)
{ return bytecode(thread)->get_index_u2_cpcache(bc); }
static int number_of_dimensions(JavaThread *thread) { return bcp(thread)[3]; }
static ConstantPoolCacheEntry* cache_entry_at(JavaThread *thread, int i) { return method(thread)->constants()->cache()->entry_at(i); }

11
hotspot/src/share/vm/interpreter/rewriter.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1998-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1998-2010 Sun Microsystems, Inc. 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
@ -103,16 +103,15 @@ void Rewriter::rewrite_Object_init(methodHandle method, TRAPS) {
// Rewrite a classfile-order CP index into a native-order CPC index.
int Rewriter::rewrite_member_reference(address bcp, int offset) {
void Rewriter::rewrite_member_reference(address bcp, int offset) {
address p = bcp + offset;
int cp_index = Bytes::get_Java_u2(p);
int cache_index = cp_entry_to_cp_cache(cp_index);
Bytes::put_native_u2(p, cache_index);
return cp_index;
}
void Rewriter::rewrite_invokedynamic(address bcp, int offset, int delete_me) {
void Rewriter::rewrite_invokedynamic(address bcp, int offset) {
address p = bcp + offset;
assert(p[-1] == Bytecodes::_invokedynamic, "");
int cp_index = Bytes::get_Java_u2(p);
@ -178,7 +177,7 @@ void Rewriter::scan_method(methodOop method) {
case Bytecodes::_lookupswitch : {
#ifndef CC_INTERP
Bytecode_lookupswitch* bc = Bytecode_lookupswitch_at(bcp);
bc->set_code(
(*bcp) = (
bc->number_of_pairs() < BinarySwitchThreshold
? Bytecodes::_fast_linearswitch
: Bytecodes::_fast_binaryswitch
@ -197,7 +196,7 @@ void Rewriter::scan_method(methodOop method) {
rewrite_member_reference(bcp, prefix_length+1);
break;
case Bytecodes::_invokedynamic:
rewrite_invokedynamic(bcp, prefix_length+1, int(sizeof"@@@@DELETE ME"));
rewrite_invokedynamic(bcp, prefix_length+1);
break;
case Bytecodes::_jsr : // fall through
case Bytecodes::_jsr_w : nof_jsrs++; break;

6
hotspot/src/share/vm/interpreter/rewriter.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1998-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1998-2010 Sun Microsystems, Inc. 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
@ -64,8 +64,8 @@ class Rewriter: public StackObj {
void scan_method(methodOop m);
methodHandle rewrite_jsrs(methodHandle m, TRAPS);
void rewrite_Object_init(methodHandle m, TRAPS);
int rewrite_member_reference(address bcp, int offset);
void rewrite_invokedynamic(address bcp, int offset, int cp_index);
void rewrite_member_reference(address bcp, int offset);
void rewrite_invokedynamic(address bcp, int offset);
public:
// Driver routine:

22
hotspot/src/share/vm/interpreter/templateTable.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -434,15 +434,15 @@ void TemplateTable::initialize() {
def(Bytecodes::_dreturn , ____|disp|clvm|____, dtos, dtos, _return , dtos );
def(Bytecodes::_areturn , ____|disp|clvm|____, atos, atos, _return , atos );
def(Bytecodes::_return , ____|disp|clvm|____, vtos, vtos, _return , vtos );
def(Bytecodes::_getstatic , ubcp|____|clvm|____, vtos, vtos, getstatic , 1 );
def(Bytecodes::_putstatic , ubcp|____|clvm|____, vtos, vtos, putstatic , 2 );
def(Bytecodes::_getfield , ubcp|____|clvm|____, vtos, vtos, getfield , 1 );
def(Bytecodes::_putfield , ubcp|____|clvm|____, vtos, vtos, putfield , 2 );
def(Bytecodes::_invokevirtual , ubcp|disp|clvm|____, vtos, vtos, invokevirtual , 2 );
def(Bytecodes::_invokespecial , ubcp|disp|clvm|____, vtos, vtos, invokespecial , 1 );
def(Bytecodes::_invokestatic , ubcp|disp|clvm|____, vtos, vtos, invokestatic , 1 );
def(Bytecodes::_invokeinterface , ubcp|disp|clvm|____, vtos, vtos, invokeinterface , 1 );
def(Bytecodes::_invokedynamic , ubcp|disp|clvm|____, vtos, vtos, invokedynamic , 1 );
def(Bytecodes::_getstatic , ubcp|____|clvm|____, vtos, vtos, getstatic , f1_byte );
def(Bytecodes::_putstatic , ubcp|____|clvm|____, vtos, vtos, putstatic , f2_byte );
def(Bytecodes::_getfield , ubcp|____|clvm|____, vtos, vtos, getfield , f1_byte );
def(Bytecodes::_putfield , ubcp|____|clvm|____, vtos, vtos, putfield , f2_byte );
def(Bytecodes::_invokevirtual , ubcp|disp|clvm|____, vtos, vtos, invokevirtual , f2_byte );
def(Bytecodes::_invokespecial , ubcp|disp|clvm|____, vtos, vtos, invokespecial , f1_byte );
def(Bytecodes::_invokestatic , ubcp|disp|clvm|____, vtos, vtos, invokestatic , f1_byte );
def(Bytecodes::_invokeinterface , ubcp|disp|clvm|____, vtos, vtos, invokeinterface , f1_byte );
def(Bytecodes::_invokedynamic , ubcp|disp|clvm|____, vtos, vtos, invokedynamic , f1_oop );
def(Bytecodes::_new , ubcp|____|clvm|____, vtos, atos, _new , _ );
def(Bytecodes::_newarray , ubcp|____|clvm|____, itos, atos, newarray , _ );
def(Bytecodes::_anewarray , ubcp|____|clvm|____, itos, atos, anewarray , _ );
@ -502,7 +502,7 @@ void TemplateTable::initialize() {
def(Bytecodes::_fast_iload2 , ubcp|____|____|____, vtos, itos, fast_iload2 , _ );
def(Bytecodes::_fast_icaload , ubcp|____|____|____, vtos, itos, fast_icaload , _ );
def(Bytecodes::_fast_invokevfinal , ubcp|disp|clvm|____, vtos, vtos, fast_invokevfinal , 2 );
def(Bytecodes::_fast_invokevfinal , ubcp|disp|clvm|____, vtos, vtos, fast_invokevfinal , f2_byte );
def(Bytecodes::_fast_linearswitch , ubcp|disp|____|____, itos, vtos, fast_linearswitch , _ );
def(Bytecodes::_fast_binaryswitch , ubcp|disp|____|____, itos, vtos, fast_binaryswitch , _ );

14
hotspot/src/share/vm/interpreter/templateTable.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -73,6 +73,7 @@ class TemplateTable: AllStatic {
public:
enum Operation { add, sub, mul, div, rem, _and, _or, _xor, shl, shr, ushr };
enum Condition { equal, not_equal, less, less_equal, greater, greater_equal };
enum CacheByte { f1_byte = 1, f2_byte = 2, f1_oop = 0x11 }; // byte_no codes
private:
static bool _is_initialized; // true if TemplateTable has been initialized
@ -244,13 +245,18 @@ class TemplateTable: AllStatic {
static void _return(TosState state);
static void resolve_cache_and_index(int byte_no, Register cache, Register index);
static void resolve_cache_and_index(int byte_no, // one of 1,2,11
Register result , // either noreg or output for f1/f2
Register cache, // output for CP cache
Register index, // output for CP index
size_t index_size); // one of 1,2,4
static void load_invoke_cp_cache_entry(int byte_no,
Register method,
Register itable_index,
Register flags,
bool is_invokevirtual = false,
bool is_virtual_final = false);
bool is_invokevirtual,
bool is_virtual_final,
bool is_invokedynamic);
static void load_field_cp_cache_entry(Register obj,
Register cache,
Register index,

10
hotspot/src/share/vm/oops/constantPoolOop.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -297,11 +297,9 @@ int constantPoolOopDesc::impl_klass_ref_index_at(int which, bool uncached) {
int constantPoolOopDesc::remap_instruction_operand_from_cache(int operand) {
// Operand was fetched by a stream using get_Java_u2, yet was stored
// by Rewriter::rewrite_member_reference in native order.
// So now we have to fix the damage by swapping back to native order.
assert((int)(u2)operand == operand, "clean u2");
int cpc_index = Bytes::swap_u2(operand);
int cpc_index = operand;
DEBUG_ONLY(cpc_index -= CPCACHE_INDEX_TAG);
assert((int)(u2)cpc_index == cpc_index, "clean u2");
int member_index = cache()->entry_at(cpc_index)->constant_pool_index();
return member_index;
}

8
hotspot/src/share/vm/oops/constantPoolOop.hpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -434,6 +434,10 @@ class constantPoolOopDesc : public oopDesc {
// Debugging
const char* printable_name_at(int which) PRODUCT_RETURN0;
#ifdef ASSERT
enum { CPCACHE_INDEX_TAG = 0x10000 }; // helps keep CP cache indices distinct from CP indices
#endif //ASSERT
private:
symbolOop impl_name_ref_at(int which, bool uncached);
@ -441,7 +445,7 @@ class constantPoolOopDesc : public oopDesc {
int impl_klass_ref_index_at(int which, bool uncached);
int impl_name_and_type_ref_index_at(int which, bool uncached);
int remap_instruction_operand_from_cache(int operand);
int remap_instruction_operand_from_cache(int operand); // operand must be biased by CPCACHE_INDEX_TAG
// Used while constructing constant pool (only by ClassFileParser)
jint klass_index_at(int which) {

26
hotspot/src/share/vm/oops/generateOopMap.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2010 Sun Microsystems, Inc. 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
@ -1254,7 +1254,7 @@ void GenerateOopMap::print_current_state(outputStream *os,
case Bytecodes::_invokestatic:
case Bytecodes::_invokedynamic:
case Bytecodes::_invokeinterface:
int idx = currentBC->get_index_int();
int idx = currentBC->has_index_u4() ? currentBC->get_index_u4() : currentBC->get_index_u2();
constantPoolOop cp = method()->constants();
int nameAndTypeIdx = cp->name_and_type_ref_index_at(idx);
int signatureIdx = cp->signature_ref_index_at(nameAndTypeIdx);
@ -1286,7 +1286,7 @@ void GenerateOopMap::print_current_state(outputStream *os,
case Bytecodes::_invokestatic:
case Bytecodes::_invokedynamic:
case Bytecodes::_invokeinterface:
int idx = currentBC->get_index_int();
int idx = currentBC->has_index_u4() ? currentBC->get_index_u4() : currentBC->get_index_u2();
constantPoolOop cp = method()->constants();
int nameAndTypeIdx = cp->name_and_type_ref_index_at(idx);
int signatureIdx = cp->signature_ref_index_at(nameAndTypeIdx);
@ -1356,8 +1356,8 @@ void GenerateOopMap::interp1(BytecodeStream *itr) {
case Bytecodes::_ldc2_w: ppush(vvCTS); break;
case Bytecodes::_ldc: do_ldc(itr->get_index(), itr->bci()); break;
case Bytecodes::_ldc_w: do_ldc(itr->get_index_big(), itr->bci());break;
case Bytecodes::_ldc: do_ldc(itr->get_index(), itr->bci()); break;
case Bytecodes::_ldc_w: do_ldc(itr->get_index_u2(), itr->bci()); break;
case Bytecodes::_iload:
case Bytecodes::_fload: ppload(vCTS, itr->get_index()); break;
@ -1550,17 +1550,17 @@ void GenerateOopMap::interp1(BytecodeStream *itr) {
case Bytecodes::_jsr_w: do_jsr(itr->dest_w()); break;
case Bytecodes::_getstatic: do_field(true, true,
itr->get_index_big(),
itr->get_index_u2_cpcache(),
itr->bci()); break;
case Bytecodes::_putstatic: do_field(false, true, itr->get_index_big(), itr->bci()); break;
case Bytecodes::_getfield: do_field(true, false, itr->get_index_big(), itr->bci()); break;
case Bytecodes::_putfield: do_field(false, false, itr->get_index_big(), itr->bci()); break;
case Bytecodes::_putstatic: do_field(false, true, itr->get_index_u2_cpcache(), itr->bci()); break;
case Bytecodes::_getfield: do_field(true, false, itr->get_index_u2_cpcache(), itr->bci()); break;
case Bytecodes::_putfield: do_field(false, false, itr->get_index_u2_cpcache(), itr->bci()); break;
case Bytecodes::_invokevirtual:
case Bytecodes::_invokespecial: do_method(false, false, itr->get_index_big(), itr->bci()); break;
case Bytecodes::_invokestatic: do_method(true, false, itr->get_index_big(), itr->bci()); break;
case Bytecodes::_invokedynamic: do_method(true, false, itr->get_index_int(), itr->bci()); break;
case Bytecodes::_invokeinterface: do_method(false, true, itr->get_index_big(), itr->bci()); break;
case Bytecodes::_invokespecial: do_method(false, false, itr->get_index_u2_cpcache(), itr->bci()); break;
case Bytecodes::_invokestatic: do_method(true, false, itr->get_index_u2_cpcache(), itr->bci()); break;
case Bytecodes::_invokedynamic: do_method(true, false, itr->get_index_u4(), itr->bci()); break;
case Bytecodes::_invokeinterface: do_method(false, true, itr->get_index_u2_cpcache(), itr->bci()); break;
case Bytecodes::_newarray:
case Bytecodes::_anewarray: pp_new_ref(vCTS, itr->bci()); break;
case Bytecodes::_checkcast: do_checkcast(); break;

2
hotspot/src/share/vm/opto/bytecodeInfo.cpp
View File

@ -340,7 +340,7 @@ bool pass_initial_checks(ciMethod* caller_method, int caller_bci, ciMethod* call
Bytecodes::Code call_bc = iter.cur_bc();
// An invokedynamic instruction does not have a klass.
if (call_bc != Bytecodes::_invokedynamic) {
int index = iter.get_index_int();
int index = iter.get_index_u2_cpcache();
if (!caller_method->is_klass_loaded(index, true)) {
return false;
}

4
hotspot/src/share/vm/opto/parse2.cpp
View File

@ -1317,8 +1317,8 @@ void Parse::do_one_bytecode() {
case Bytecodes::_iconst_3: push(intcon( 3)); break;
case Bytecodes::_iconst_4: push(intcon( 4)); break;
case Bytecodes::_iconst_5: push(intcon( 5)); break;
case Bytecodes::_bipush: push(intcon( iter().get_byte())); break;
case Bytecodes::_sipush: push(intcon( iter().get_short())); break;
case Bytecodes::_bipush: push(intcon(iter().get_constant_u1())); break;
case Bytecodes::_sipush: push(intcon(iter().get_constant_u2())); break;
case Bytecodes::_aconst_null: push(null()); break;
case Bytecodes::_ldc:
case Bytecodes::_ldc_w:

4
hotspot/src/share/vm/prims/jvmtiClassFileReconstituter.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 2005-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 2005-2010 Sun Microsystems, Inc. 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
@ -638,7 +638,7 @@ void JvmtiClassFileReconstituter::copy_bytecodes(methodHandle mh,
// length of bytecode (mnemonic + operands)
address bcp = bs.bcp();
int len = bs.next_bcp() - bcp;
int len = bs.instruction_size();
assert(len > 0, "length must be > 0");
// copy the bytecodes

33
hotspot/src/share/vm/prims/methodComparator.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 2000-2009 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 2000-2010 Sun Microsystems, Inc. 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
@ -130,8 +130,8 @@ bool MethodComparator::args_same(Bytecodes::Code c_old, Bytecodes::Code c_new) {
case Bytecodes::_multianewarray : // fall through
case Bytecodes::_checkcast : // fall through
case Bytecodes::_instanceof : {
u2 cpi_old = _s_old->get_index_big();
u2 cpi_new = _s_new->get_index_big();
u2 cpi_old = _s_old->get_index_u2();
u2 cpi_new = _s_new->get_index_u2();
if ((_old_cp->klass_at_noresolve(cpi_old) != _new_cp->klass_at_noresolve(cpi_new)))
return false;
if (c_old == Bytecodes::_multianewarray &&
@ -147,9 +147,10 @@ bool MethodComparator::args_same(Bytecodes::Code c_old, Bytecodes::Code c_new) {
case Bytecodes::_invokevirtual : // fall through
case Bytecodes::_invokespecial : // fall through
case Bytecodes::_invokestatic : // fall through
case Bytecodes::_invokedynamic : // fall through
case Bytecodes::_invokeinterface : {
u2 cpci_old = _s_old->get_index_int();
u2 cpci_new = _s_new->get_index_int();
u2 cpci_old = _s_old->has_index_u4() ? _s_old->get_index_u4() : _s_old->get_index_u2();
u2 cpci_new = _s_new->has_index_u4() ? _s_new->get_index_u4() : _s_new->get_index_u2();
// Check if the names of classes, field/method names and signatures at these indexes
// are the same. Indices which are really into constantpool cache (rather than constant
// pool itself) are accepted by the constantpool query routines below.
@ -167,8 +168,8 @@ bool MethodComparator::args_same(Bytecodes::Code c_old, Bytecodes::Code c_new) {
cpi_old = _s_old->bcp()[1];
cpi_new = _s_new->bcp()[1];
} else {
cpi_old = _s_old->get_index_big();
cpi_new = _s_new->get_index_big();
cpi_old = _s_old->get_index_u2();
cpi_new = _s_new->get_index_u2();
}
constantTag tag_old = _old_cp->tag_at(cpi_old);
constantTag tag_new = _new_cp->tag_at(cpi_new);
@ -199,8 +200,8 @@ bool MethodComparator::args_same(Bytecodes::Code c_old, Bytecodes::Code c_new) {
}
case Bytecodes::_ldc2_w : {
u2 cpi_old = _s_old->get_index_big();
u2 cpi_new = _s_new->get_index_big();
u2 cpi_old = _s_old->get_index_u2();
u2 cpi_new = _s_new->get_index_u2();
constantTag tag_old = _old_cp->tag_at(cpi_old);
constantTag tag_new = _new_cp->tag_at(cpi_new);
if (tag_old.value() != tag_new.value())
@ -221,7 +222,7 @@ bool MethodComparator::args_same(Bytecodes::Code c_old, Bytecodes::Code c_new) {
break;
case Bytecodes::_sipush :
if (_s_old->get_index_big() != _s_new->get_index_big())
if (_s_old->get_index_u2() != _s_new->get_index_u2())
return false;
break;
@ -260,8 +261,8 @@ bool MethodComparator::args_same(Bytecodes::Code c_old, Bytecodes::Code c_new) {
case Bytecodes::_ifnonnull : // fall through
case Bytecodes::_ifnull : // fall through
case Bytecodes::_jsr : {
short old_ofs = (short) _s_old->get_index_big();
short new_ofs = (short) _s_new->get_index_big();
short old_ofs = (short) _s_old->get_index_u2();
short new_ofs = (short) _s_new->get_index_u2();
if (_switchable_test) {
int old_dest = _s_old->bci() + old_ofs;
int new_dest = _s_new->bci() + new_ofs;
@ -285,9 +286,11 @@ bool MethodComparator::args_same(Bytecodes::Code c_old, Bytecodes::Code c_new) {
if (_s_old->is_wide() != _s_new->is_wide())
return false;
if (! _s_old->is_wide()) {
if (_s_old->get_index_big() != _s_new->get_index_big())
// We could use get_index_u1 and get_constant_u1, but it's simpler to grab both bytes at once:
if (Bytes::get_Java_u2(_s_old->bcp() + 1) != Bytes::get_Java_u2(_s_new->bcp() + 1))
return false;
} else {
// We could use get_index_u2 and get_constant_u2, but it's simpler to grab all four bytes at once:
if (Bytes::get_Java_u4(_s_old->bcp() + 1) != Bytes::get_Java_u4(_s_new->bcp() + 1))
return false;
}
@ -357,8 +360,8 @@ bool MethodComparator::args_same(Bytecodes::Code c_old, Bytecodes::Code c_new) {
}
}
} else { // !_switchable_test, can use fast rough compare
int len_old = _s_old->next_bcp() - _s_old->bcp();
int len_new = _s_new->next_bcp() - _s_new->bcp();
int len_old = _s_old->instruction_size();
int len_new = _s_new->instruction_size();
if (len_old != len_new)
return false;
if (memcmp(_s_old->bcp(), _s_new->bcp(), len_old) != 0)

10
hotspot/src/share/vm/prims/methodHandleWalk.cpp
View File

@ -732,7 +732,7 @@ void MethodHandleCompiler::emit_bc(Bytecodes::Code op, int index) {
case Bytecodes::_dreturn:
case Bytecodes::_areturn:
case Bytecodes::_return:
assert(strcmp(Bytecodes::format(op), "b") == 0, "wrong bytecode format");
assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_b, "wrong bytecode format");
_bytecode.push(op);
break;
@ -748,7 +748,7 @@ void MethodHandleCompiler::emit_bc(Bytecodes::Code op, int index) {
case Bytecodes::_fstore:
case Bytecodes::_dstore:
case Bytecodes::_astore:
assert(strcmp(Bytecodes::format(op), "bi") == 0, "wrong bytecode format");
assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bi, "wrong bytecode format");
assert((char) index == index, "index does not fit in 8-bit");
_bytecode.push(op);
_bytecode.push(index);
@ -757,18 +757,18 @@ void MethodHandleCompiler::emit_bc(Bytecodes::Code op, int index) {
// bii
case Bytecodes::_ldc2_w:
case Bytecodes::_checkcast:
assert(strcmp(Bytecodes::format(op), "bii") == 0, "wrong bytecode format");
assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bkk, "wrong bytecode format");
assert((short) index == index, "index does not fit in 16-bit");
_bytecode.push(op);
_bytecode.push(index >> 8);
_bytecode.push(index);
break;
// bjj
// bJJ
case Bytecodes::_invokestatic:
case Bytecodes::_invokespecial:
case Bytecodes::_invokevirtual:
assert(strcmp(Bytecodes::format(op), "bjj") == 0, "wrong bytecode format");
assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bJJ, "wrong bytecode format");
assert((short) index == index, "index does not fit in 16-bit");
_bytecode.push(op);
_bytecode.push(index >> 8);