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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes

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Initial checkin of JSDT code

Reviewed-by: acorn, sbohne
This commit is contained in:
Keith McGuigan 2008-04-17 22:18:15 -04:00
parent 849e0dfc44
commit f072bc9d3f
26 changed files with 2935 additions and 26 deletions
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7
hotspot/make/linux/makefiles/mapfile-vers-debug
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@ -1,4 +1,6 @@
# #
# @(#)mapfile-vers-debug 1.18 07/10/25 16:47:35
#
# #
# Copyright 2002-2006 Sun Microsystems, Inc. All Rights Reserved. # Copyright 2002-2006 Sun Microsystems, Inc. All Rights Reserved.
@ -75,6 +77,11 @@ SUNWprivate_1.1 {
JVM_DesiredAssertionStatus; JVM_DesiredAssertionStatus;
JVM_DisableCompiler; JVM_DisableCompiler;
JVM_DoPrivileged; JVM_DoPrivileged;
JVM_DTraceGetVersion;
JVM_DTraceActivate;
JVM_DTraceIsProbeEnabled;
JVM_DTraceIsSupported;
JVM_DTraceDispose;
JVM_DumpAllStacks; JVM_DumpAllStacks;
JVM_DumpThreads; JVM_DumpThreads;
JVM_EnableCompiler; JVM_EnableCompiler;

7
hotspot/make/linux/makefiles/mapfile-vers-product
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@ -1,4 +1,6 @@
# #
# @(#)mapfile-vers-product 1.19 08/02/12 10:56:37
#
# #
# Copyright 2002-2006 Sun Microsystems, Inc. All Rights Reserved. # Copyright 2002-2006 Sun Microsystems, Inc. All Rights Reserved.
@ -75,6 +77,11 @@ SUNWprivate_1.1 {
JVM_DesiredAssertionStatus; JVM_DesiredAssertionStatus;
JVM_DisableCompiler; JVM_DisableCompiler;
JVM_DoPrivileged; JVM_DoPrivileged;
JVM_DTraceGetVersion;
JVM_DTraceActivate;
JVM_DTraceIsProbeEnabled;
JVM_DTraceIsSupported;
JVM_DTraceDispose;
JVM_DumpAllStacks; JVM_DumpAllStacks;
JVM_DumpThreads; JVM_DumpThreads;
JVM_EnableCompiler; JVM_EnableCompiler;

6
hotspot/make/solaris/makefiles/dtrace.make
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@ -193,10 +193,16 @@ $(DTRACE.o): $(DTRACE).d $(JVMOFFS).h $(JVMOFFS)Index.h $(DTraced_Files)
.PHONY: dtraceCheck .PHONY: dtraceCheck
SYSTEM_DTRACE_H = /usr/include/dtrace.h
SYSTEM_DTRACE_PROG = /usr/sbin/dtrace SYSTEM_DTRACE_PROG = /usr/sbin/dtrace
PATCH_DTRACE_PROG = /opt/SUNWdtrd/sbin/dtrace PATCH_DTRACE_PROG = /opt/SUNWdtrd/sbin/dtrace
systemDtraceFound := $(wildcard ${SYSTEM_DTRACE_PROG}) systemDtraceFound := $(wildcard ${SYSTEM_DTRACE_PROG})
patchDtraceFound := $(wildcard ${PATCH_DTRACE_PROG}) patchDtraceFound := $(wildcard ${PATCH_DTRACE_PROG})
systemDtraceHdrFound := $(wildcard $(SYSTEM_DTRACE_H))
ifneq ("$(systemDtraceHdrFound)", "")
CFLAGS += -DHAVE_DTRACE_H
endif
ifneq ("$(patchDtraceFound)", "") ifneq ("$(patchDtraceFound)", "")
DTRACE_PROG=$(PATCH_DTRACE_PROG) DTRACE_PROG=$(PATCH_DTRACE_PROG)

7
hotspot/make/solaris/makefiles/mapfile-vers
View File

@ -1,4 +1,6 @@
# #
# @(#)mapfile-vers 1.32 07/10/25 16:47:36
#
# #
# Copyright 2000-2006 Sun Microsystems, Inc. All Rights Reserved. # Copyright 2000-2006 Sun Microsystems, Inc. All Rights Reserved.
@ -75,6 +77,11 @@ SUNWprivate_1.1 {
JVM_DesiredAssertionStatus; JVM_DesiredAssertionStatus;
JVM_DisableCompiler; JVM_DisableCompiler;
JVM_DoPrivileged; JVM_DoPrivileged;
JVM_DTraceGetVersion;
JVM_DTraceActivate;
JVM_DTraceIsProbeEnabled;
JVM_DTraceIsSupported;
JVM_DTraceDispose;
JVM_DumpAllStacks; JVM_DumpAllStacks;
JVM_DumpThreads; JVM_DumpThreads;
JVM_EnableCompiler; JVM_EnableCompiler;

4
hotspot/src/cpu/sparc/vm/nativeInst_sparc.cpp
View File

@ -26,6 +26,10 @@
# include "incls/_nativeInst_sparc.cpp.incl" # include "incls/_nativeInst_sparc.cpp.incl"
bool NativeInstruction::is_dtrace_trap() {
return !is_nop();
}
void NativeInstruction::set_data64_sethi(address instaddr, intptr_t x) { void NativeInstruction::set_data64_sethi(address instaddr, intptr_t x) {
ResourceMark rm; ResourceMark rm;
CodeBuffer buf(instaddr, 10 * BytesPerInstWord ); CodeBuffer buf(instaddr, 10 * BytesPerInstWord );

1
hotspot/src/cpu/sparc/vm/nativeInst_sparc.hpp
View File

@ -43,6 +43,7 @@ class NativeInstruction VALUE_OBJ_CLASS_SPEC {
nop_instruction_size = 4 nop_instruction_size = 4
}; };
bool is_dtrace_trap();
bool is_nop() { return long_at(0) == nop_instruction(); } bool is_nop() { return long_at(0) == nop_instruction(); }
bool is_call() { return is_op(long_at(0), Assembler::call_op); } bool is_call() { return is_op(long_at(0), Assembler::call_op); }
bool is_sethi() { return (is_op2(long_at(0), Assembler::sethi_op2) bool is_sethi() { return (is_op2(long_at(0), Assembler::sethi_op2)

547
hotspot/src/cpu/sparc/vm/sharedRuntime_sparc.cpp
View File

@ -1637,7 +1637,7 @@ static void long_move(MacroAssembler* masm, VMRegPair src, VMRegPair dst) {
} }
} else if (dst.is_single_phys_reg()) { } else if (dst.is_single_phys_reg()) {
if (src.is_adjacent_aligned_on_stack(2)) { if (src.is_adjacent_aligned_on_stack(2)) {
__ ldd(FP, reg2offset(src.first()) + STACK_BIAS, dst.first()->as_Register()); __ ld_long(FP, reg2offset(src.first()) + STACK_BIAS, dst.first()->as_Register());
} else { } else {
// dst is a single reg. // dst is a single reg.
// Remember lo is low address not msb for stack slots // Remember lo is low address not msb for stack slots
@ -2501,6 +2501,551 @@ nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler* masm,
} }
#ifdef HAVE_DTRACE_H
// ---------------------------------------------------------------------------
// Generate a dtrace nmethod for a given signature. The method takes arguments
// in the Java compiled code convention, marshals them to the native
// abi and then leaves nops at the position you would expect to call a native
// function. When the probe is enabled the nops are replaced with a trap
// instruction that dtrace inserts and the trace will cause a notification
// to dtrace.
//
// The probes are only able to take primitive types and java/lang/String as
// arguments. No other java types are allowed. Strings are converted to utf8
// strings so that from dtrace point of view java strings are converted to C
// strings. There is an arbitrary fixed limit on the total space that a method
// can use for converting the strings. (256 chars per string in the signature).
// So any java string larger then this is truncated.
static int fp_offset[ConcreteRegisterImpl::number_of_registers] = { 0 };
static bool offsets_initialized = false;
static VMRegPair reg64_to_VMRegPair(Register r) {
VMRegPair ret;
if (wordSize == 8) {
ret.set2(r->as_VMReg());
} else {
ret.set_pair(r->successor()->as_VMReg(), r->as_VMReg());
}
return ret;
}
nmethod *SharedRuntime::generate_dtrace_nmethod(
MacroAssembler *masm, methodHandle method) {
// generate_dtrace_nmethod is guarded by a mutex so we are sure to
// be single threaded in this method.
assert(AdapterHandlerLibrary_lock->owned_by_self(), "must be");
// Fill in the signature array, for the calling-convention call.
int total_args_passed = method->size_of_parameters();
BasicType* in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed);
VMRegPair *in_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed);
// The signature we are going to use for the trap that dtrace will see
// java/lang/String is converted. We drop "this" and any other object
// is converted to NULL. (A one-slot java/lang/Long object reference
// is converted to a two-slot long, which is why we double the allocation).
BasicType* out_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed * 2);
VMRegPair* out_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed * 2);
int i=0;
int total_strings = 0;
int first_arg_to_pass = 0;
int total_c_args = 0;
int box_offset = java_lang_boxing_object::value_offset_in_bytes();
// Skip the receiver as dtrace doesn't want to see it
if( !method->is_static() ) {
in_sig_bt[i++] = T_OBJECT;
first_arg_to_pass = 1;
}
SignatureStream ss(method->signature());
for ( ; !ss.at_return_type(); ss.next()) {
BasicType bt = ss.type();
in_sig_bt[i++] = bt; // Collect remaining bits of signature
out_sig_bt[total_c_args++] = bt;
if( bt == T_OBJECT) {
symbolOop s = ss.as_symbol_or_null();
if (s == vmSymbols::java_lang_String()) {
total_strings++;
out_sig_bt[total_c_args-1] = T_ADDRESS;
} else if (s == vmSymbols::java_lang_Boolean() ||
s == vmSymbols::java_lang_Byte()) {
out_sig_bt[total_c_args-1] = T_BYTE;
} else if (s == vmSymbols::java_lang_Character() ||
s == vmSymbols::java_lang_Short()) {
out_sig_bt[total_c_args-1] = T_SHORT;
} else if (s == vmSymbols::java_lang_Integer() ||
s == vmSymbols::java_lang_Float()) {
out_sig_bt[total_c_args-1] = T_INT;
} else if (s == vmSymbols::java_lang_Long() ||
s == vmSymbols::java_lang_Double()) {
out_sig_bt[total_c_args-1] = T_LONG;
out_sig_bt[total_c_args++] = T_VOID;
}
} else if ( bt == T_LONG || bt == T_DOUBLE ) {
in_sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots
// We convert double to long
out_sig_bt[total_c_args-1] = T_LONG;
out_sig_bt[total_c_args++] = T_VOID;
} else if ( bt == T_FLOAT) {
// We convert float to int
out_sig_bt[total_c_args-1] = T_INT;
}
}
assert(i==total_args_passed, "validly parsed signature");
// Now get the compiled-Java layout as input arguments
int comp_args_on_stack;
comp_args_on_stack = SharedRuntime::java_calling_convention(
in_sig_bt, in_regs, total_args_passed, false);
// We have received a description of where all the java arg are located
// on entry to the wrapper. We need to convert these args to where
// the a native (non-jni) function would expect them. To figure out
// where they go we convert the java signature to a C signature and remove
// T_VOID for any long/double we might have received.
// Now figure out where the args must be stored and how much stack space
// they require (neglecting out_preserve_stack_slots but space for storing
// the 1st six register arguments). It's weird see int_stk_helper.
//
int out_arg_slots;
out_arg_slots = c_calling_convention(out_sig_bt, out_regs, total_c_args);
// Calculate the total number of stack slots we will need.
// First count the abi requirement plus all of the outgoing args
int stack_slots = SharedRuntime::out_preserve_stack_slots() + out_arg_slots;
// Plus a temp for possible converion of float/double/long register args
int conversion_temp = stack_slots;
stack_slots += 2;
// Now space for the string(s) we must convert
int string_locs = stack_slots;
stack_slots += total_strings *
(max_dtrace_string_size / VMRegImpl::stack_slot_size);
// Ok The space we have allocated will look like:
//
//
// FP-> | |
// |---------------------|
// | string[n] |
// |---------------------| <- string_locs[n]
// | string[n-1] |
// |---------------------| <- string_locs[n-1]
// | ... |
// | ... |
// |---------------------| <- string_locs[1]
// | string[0] |
// |---------------------| <- string_locs[0]
// | temp |
// |---------------------| <- conversion_temp
// | outbound memory |
// | based arguments |
// | |
// |---------------------|
// | |
// SP-> | out_preserved_slots |
//
//
// Now compute actual number of stack words we need rounding to make
// stack properly aligned.
stack_slots = round_to(stack_slots, 4 * VMRegImpl::slots_per_word);
int stack_size = stack_slots * VMRegImpl::stack_slot_size;
intptr_t start = (intptr_t)__ pc();
// First thing make an ic check to see if we should even be here
{
Label L;
const Register temp_reg = G3_scratch;
Address ic_miss(temp_reg, SharedRuntime::get_ic_miss_stub());
__ verify_oop(O0);
__ ld_ptr(O0, oopDesc::klass_offset_in_bytes(), temp_reg);
__ cmp(temp_reg, G5_inline_cache_reg);
__ brx(Assembler::equal, true, Assembler::pt, L);
__ delayed()->nop();
__ jump_to(ic_miss, 0);
__ delayed()->nop();
__ align(CodeEntryAlignment);
__ bind(L);
}
int vep_offset = ((intptr_t)__ pc()) - start;
// The instruction at the verified entry point must be 5 bytes or longer
// because it can be patched on the fly by make_non_entrant. The stack bang
// instruction fits that requirement.
// Generate stack overflow check before creating frame
__ generate_stack_overflow_check(stack_size);
assert(((intptr_t)__ pc() - start - vep_offset) >= 5,
"valid size for make_non_entrant");
// Generate a new frame for the wrapper.
__ save(SP, -stack_size, SP);
// Frame is now completed as far a size and linkage.
int frame_complete = ((intptr_t)__ pc()) - start;
#ifdef ASSERT
bool reg_destroyed[RegisterImpl::number_of_registers];
bool freg_destroyed[FloatRegisterImpl::number_of_registers];
for ( int r = 0 ; r < RegisterImpl::number_of_registers ; r++ ) {
reg_destroyed[r] = false;
}
for ( int f = 0 ; f < FloatRegisterImpl::number_of_registers ; f++ ) {
freg_destroyed[f] = false;
}
#endif /* ASSERT */
VMRegPair zero;
zero.set2(G0->as_VMReg());
int c_arg, j_arg;
Register conversion_off = noreg;
for (j_arg = first_arg_to_pass, c_arg = 0 ;
j_arg < total_args_passed ; j_arg++, c_arg++ ) {
VMRegPair src = in_regs[j_arg];
VMRegPair dst = out_regs[c_arg];
#ifdef ASSERT
if (src.first()->is_Register()) {
assert(!reg_destroyed[src.first()->as_Register()->encoding()], "ack!");
} else if (src.first()->is_FloatRegister()) {
assert(!freg_destroyed[src.first()->as_FloatRegister()->encoding(
FloatRegisterImpl::S)], "ack!");
}
if (dst.first()->is_Register()) {
reg_destroyed[dst.first()->as_Register()->encoding()] = true;
} else if (dst.first()->is_FloatRegister()) {
freg_destroyed[dst.first()->as_FloatRegister()->encoding(
FloatRegisterImpl::S)] = true;
}
#endif /* ASSERT */
switch (in_sig_bt[j_arg]) {
case T_ARRAY:
case T_OBJECT:
{
if (out_sig_bt[c_arg] == T_BYTE || out_sig_bt[c_arg] == T_SHORT ||
out_sig_bt[c_arg] == T_INT || out_sig_bt[c_arg] == T_LONG) {
// need to unbox a one-slot value
Register in_reg = L0;
Register tmp = L2;
if ( src.first()->is_reg() ) {
in_reg = src.first()->as_Register();
} else {
assert(Assembler::is_simm13(reg2offset(src.first()) + STACK_BIAS),
"must be");
__ ld_ptr(FP, reg2offset(src.first()) + STACK_BIAS, in_reg);
}
// If the final destination is an acceptable register
if ( dst.first()->is_reg() ) {
if ( dst.is_single_phys_reg() || out_sig_bt[c_arg] != T_LONG ) {
tmp = dst.first()->as_Register();
}
}
Label skipUnbox;
if ( wordSize == 4 && out_sig_bt[c_arg] == T_LONG ) {
__ mov(G0, tmp->successor());
}
__ br_null(in_reg, true, Assembler::pn, skipUnbox);
__ delayed()->mov(G0, tmp);
switch (out_sig_bt[c_arg]) {
case T_BYTE:
__ ldub(in_reg, box_offset, tmp); break;
case T_SHORT:
__ lduh(in_reg, box_offset, tmp); break;
case T_INT:
__ ld(in_reg, box_offset, tmp); break;
case T_LONG:
__ ld_long(in_reg, box_offset, tmp); break;
default: ShouldNotReachHere();
}
__ bind(skipUnbox);
// If tmp wasn't final destination copy to final destination
if (tmp == L2) {
VMRegPair tmp_as_VM = reg64_to_VMRegPair(L2);
if (out_sig_bt[c_arg] == T_LONG) {
long_move(masm, tmp_as_VM, dst);
} else {
move32_64(masm, tmp_as_VM, out_regs[c_arg]);
}
}
if (out_sig_bt[c_arg] == T_LONG) {
assert(out_sig_bt[c_arg+1] == T_VOID, "must be");
++c_arg; // move over the T_VOID to keep the loop indices in sync
}
} else if (out_sig_bt[c_arg] == T_ADDRESS) {
Register s =
src.first()->is_reg() ? src.first()->as_Register() : L2;
Register d =
dst.first()->is_reg() ? dst.first()->as_Register() : L2;
// We store the oop now so that the conversion pass can reach
// while in the inner frame. This will be the only store if
// the oop is NULL.
if (s != L2) {
// src is register
if (d != L2) {
// dst is register
__ mov(s, d);
} else {
assert(Assembler::is_simm13(reg2offset(dst.first()) +
STACK_BIAS), "must be");
__ st_ptr(s, SP, reg2offset(dst.first()) + STACK_BIAS);
}
} else {
// src not a register
assert(Assembler::is_simm13(reg2offset(src.first()) +
STACK_BIAS), "must be");
__ ld_ptr(FP, reg2offset(src.first()) + STACK_BIAS, d);
if (d == L2) {
assert(Assembler::is_simm13(reg2offset(dst.first()) +
STACK_BIAS), "must be");
__ st_ptr(d, SP, reg2offset(dst.first()) + STACK_BIAS);
}
}
} else if (out_sig_bt[c_arg] != T_VOID) {
// Convert the arg to NULL
if (dst.first()->is_reg()) {
__ mov(G0, dst.first()->as_Register());
} else {
assert(Assembler::is_simm13(reg2offset(dst.first()) +
STACK_BIAS), "must be");
__ st_ptr(G0, SP, reg2offset(dst.first()) + STACK_BIAS);
}
}
}
break;
case T_VOID:
break;
case T_FLOAT:
if (src.first()->is_stack()) {
// Stack to stack/reg is simple
move32_64(masm, src, dst);
} else {
if (dst.first()->is_reg()) {
// freg -> reg
int off =
STACK_BIAS + conversion_temp * VMRegImpl::stack_slot_size;
Register d = dst.first()->as_Register();
if (Assembler::is_simm13(off)) {
__ stf(FloatRegisterImpl::S, src.first()->as_FloatRegister(),
SP, off);
__ ld(SP, off, d);
} else {
if (conversion_off == noreg) {
__ set(off, L6);
conversion_off = L6;
}
__ stf(FloatRegisterImpl::S, src.first()->as_FloatRegister(),
SP, conversion_off);
__ ld(SP, conversion_off , d);
}
} else {
// freg -> mem
int off = STACK_BIAS + reg2offset(dst.first());
if (Assembler::is_simm13(off)) {
__ stf(FloatRegisterImpl::S, src.first()->as_FloatRegister(),
SP, off);
} else {
if (conversion_off == noreg) {
__ set(off, L6);
conversion_off = L6;
}
__ stf(FloatRegisterImpl::S, src.first()->as_FloatRegister(),
SP, conversion_off);
}
}
}
break;
case T_DOUBLE:
assert( j_arg + 1 < total_args_passed &&
in_sig_bt[j_arg + 1] == T_VOID &&
out_sig_bt[c_arg+1] == T_VOID, "bad arg list");
if (src.first()->is_stack()) {
// Stack to stack/reg is simple
long_move(masm, src, dst);
} else {
Register d = dst.first()->is_reg() ? dst.first()->as_Register() : L2;
// Destination could be an odd reg on 32bit in which case
// we can't load direct to the destination.
if (!d->is_even() && wordSize == 4) {
d = L2;
}
int off = STACK_BIAS + conversion_temp * VMRegImpl::stack_slot_size;
if (Assembler::is_simm13(off)) {
__ stf(FloatRegisterImpl::D, src.first()->as_FloatRegister(),
SP, off);
__ ld_long(SP, off, d);
} else {
if (conversion_off == noreg) {
__ set(off, L6);
conversion_off = L6;
}
__ stf(FloatRegisterImpl::D, src.first()->as_FloatRegister(),
SP, conversion_off);
__ ld_long(SP, conversion_off, d);
}
if (d == L2) {
long_move(masm, reg64_to_VMRegPair(L2), dst);
}
}
break;
case T_LONG :
// 32bit can't do a split move of something like g1 -> O0, O1
// so use a memory temp
if (src.is_single_phys_reg() && wordSize == 4) {
Register tmp = L2;
if (dst.first()->is_reg() &&
(wordSize == 8 || dst.first()->as_Register()->is_even())) {
tmp = dst.first()->as_Register();
}
int off = STACK_BIAS + conversion_temp * VMRegImpl::stack_slot_size;
if (Assembler::is_simm13(off)) {
__ stx(src.first()->as_Register(), SP, off);
__ ld_long(SP, off, tmp);
} else {
if (conversion_off == noreg) {
__ set(off, L6);
conversion_off = L6;
}
__ stx(src.first()->as_Register(), SP, conversion_off);
__ ld_long(SP, conversion_off, tmp);
}
if (tmp == L2) {
long_move(masm, reg64_to_VMRegPair(L2), dst);
}
} else {
long_move(masm, src, dst);
}
break;
case T_ADDRESS: assert(false, "found T_ADDRESS in java args");
default:
move32_64(masm, src, dst);
}
}
// If we have any strings we must store any register based arg to the stack
// This includes any still live xmm registers too.
if (total_strings > 0 ) {
// protect all the arg registers
__ save_frame(0);
__ mov(G2_thread, L7_thread_cache);
const Register L2_string_off = L2;
// Get first string offset
__ set(string_locs * VMRegImpl::stack_slot_size, L2_string_off);
for (c_arg = 0 ; c_arg < total_c_args ; c_arg++ ) {
if (out_sig_bt[c_arg] == T_ADDRESS) {
VMRegPair dst = out_regs[c_arg];
const Register d = dst.first()->is_reg() ?
dst.first()->as_Register()->after_save() : noreg;
// It's a string the oop and it was already copied to the out arg
// position
if (d != noreg) {
__ mov(d, O0);
} else {
assert(Assembler::is_simm13(reg2offset(dst.first()) + STACK_BIAS),
"must be");
__ ld_ptr(FP, reg2offset(dst.first()) + STACK_BIAS, O0);
}
Label skip;
__ br_null(O0, false, Assembler::pn, skip);
__ delayed()->add(FP, L2_string_off, O1);
if (d != noreg) {
__ mov(O1, d);
} else {
assert(Assembler::is_simm13(reg2offset(dst.first()) + STACK_BIAS),
"must be");
__ st_ptr(O1, FP, reg2offset(dst.first()) + STACK_BIAS);
}
__ call(CAST_FROM_FN_PTR(address, SharedRuntime::get_utf),
relocInfo::runtime_call_type);
__ delayed()->add(L2_string_off, max_dtrace_string_size, L2_string_off);
__ bind(skip);
}
}
__ mov(L7_thread_cache, G2_thread);
__ restore();
}
// Ok now we are done. Need to place the nop that dtrace wants in order to
// patch in the trap
int patch_offset = ((intptr_t)__ pc()) - start;
__ nop();
// Return
__ ret();
__ delayed()->restore();
__ flush();
nmethod *nm = nmethod::new_dtrace_nmethod(
method, masm->code(), vep_offset, patch_offset, frame_complete,
stack_slots / VMRegImpl::slots_per_word);
return nm;
}
#endif // HAVE_DTRACE_H
// this function returns the adjust size (in number of words) to a c2i adapter // this function returns the adjust size (in number of words) to a c2i adapter
// activation for use during deoptimization // activation for use during deoptimization
int Deoptimization::last_frame_adjust(int callee_parameters, int callee_locals) { int Deoptimization::last_frame_adjust(int callee_parameters, int callee_locals) {

4
hotspot/src/cpu/x86/vm/nativeInst_x86.cpp
View File

@ -472,3 +472,7 @@ address NativeGeneralJump::jump_destination() const {
else else
return addr_at(0) + length + sbyte_at(offset); return addr_at(0) + length + sbyte_at(offset);
} }
bool NativeInstruction::is_dtrace_trap() {
return (*(int32_t*)this & 0xff) == 0xcc;
}

1
hotspot/src/cpu/x86/vm/nativeInst_x86.hpp
View File

@ -50,6 +50,7 @@ class NativeInstruction VALUE_OBJ_CLASS_SPEC {
}; };
bool is_nop() { return ubyte_at(0) == nop_instruction_code; } bool is_nop() { return ubyte_at(0) == nop_instruction_code; }
bool is_dtrace_trap();
inline bool is_call(); inline bool is_call();
inline bool is_illegal(); inline bool is_illegal();
inline bool is_return(); inline bool is_return();

373
hotspot/src/cpu/x86/vm/sharedRuntime_x86_32.cpp
View File

@ -1880,6 +1880,379 @@ nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm,
} }
#ifdef HAVE_DTRACE_H
// ---------------------------------------------------------------------------
// Generate a dtrace nmethod for a given signature. The method takes arguments
// in the Java compiled code convention, marshals them to the native
// abi and then leaves nops at the position you would expect to call a native
// function. When the probe is enabled the nops are replaced with a trap
// instruction that dtrace inserts and the trace will cause a notification
// to dtrace.
//
// The probes are only able to take primitive types and java/lang/String as
// arguments. No other java types are allowed. Strings are converted to utf8
// strings so that from dtrace point of view java strings are converted to C
// strings. There is an arbitrary fixed limit on the total space that a method
// can use for converting the strings. (256 chars per string in the signature).
// So any java string larger then this is truncated.
nmethod *SharedRuntime::generate_dtrace_nmethod(
MacroAssembler *masm, methodHandle method) {
// generate_dtrace_nmethod is guarded by a mutex so we are sure to
// be single threaded in this method.
assert(AdapterHandlerLibrary_lock->owned_by_self(), "must be");
// Fill in the signature array, for the calling-convention call.
int total_args_passed = method->size_of_parameters();
BasicType* in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed);
VMRegPair *in_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed);
// The signature we are going to use for the trap that dtrace will see
// java/lang/String is converted. We drop "this" and any other object
// is converted to NULL. (A one-slot java/lang/Long object reference
// is converted to a two-slot long, which is why we double the allocation).
BasicType* out_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed * 2);
VMRegPair* out_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed * 2);
int i=0;
int total_strings = 0;
int first_arg_to_pass = 0;
int total_c_args = 0;
int box_offset = java_lang_boxing_object::value_offset_in_bytes();
if( !method->is_static() ) { // Pass in receiver first
in_sig_bt[i++] = T_OBJECT;
first_arg_to_pass = 1;
}
// We need to convert the java args to where a native (non-jni) function
// would expect them. To figure out where they go we convert the java
// signature to a C signature.
SignatureStream ss(method->signature());
for ( ; !ss.at_return_type(); ss.next()) {
BasicType bt = ss.type();
in_sig_bt[i++] = bt; // Collect remaining bits of signature
out_sig_bt[total_c_args++] = bt;
if( bt == T_OBJECT) {
symbolOop s = ss.as_symbol_or_null();
if (s == vmSymbols::java_lang_String()) {
total_strings++;
out_sig_bt[total_c_args-1] = T_ADDRESS;
} else if (s == vmSymbols::java_lang_Boolean() ||
s == vmSymbols::java_lang_Character() ||
s == vmSymbols::java_lang_Byte() ||
s == vmSymbols::java_lang_Short() ||
s == vmSymbols::java_lang_Integer() ||
s == vmSymbols::java_lang_Float()) {
out_sig_bt[total_c_args-1] = T_INT;
} else if (s == vmSymbols::java_lang_Long() ||
s == vmSymbols::java_lang_Double()) {
out_sig_bt[total_c_args-1] = T_LONG;
out_sig_bt[total_c_args++] = T_VOID;
}
} else if ( bt == T_LONG || bt == T_DOUBLE ) {
in_sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots
out_sig_bt[total_c_args++] = T_VOID;
}
}
assert(i==total_args_passed, "validly parsed signature");
// Now get the compiled-Java layout as input arguments
int comp_args_on_stack;
comp_args_on_stack = SharedRuntime::java_calling_convention(
in_sig_bt, in_regs, total_args_passed, false);
// Now figure out where the args must be stored and how much stack space
// they require (neglecting out_preserve_stack_slots).
int out_arg_slots;
out_arg_slots = c_calling_convention(out_sig_bt, out_regs, total_c_args);
// Calculate the total number of stack slots we will need.
// First count the abi requirement plus all of the outgoing args
int stack_slots = SharedRuntime::out_preserve_stack_slots() + out_arg_slots;
// Now space for the string(s) we must convert
int* string_locs = NEW_RESOURCE_ARRAY(int, total_strings + 1);
for (i = 0; i < total_strings ; i++) {
string_locs[i] = stack_slots;
stack_slots += max_dtrace_string_size / VMRegImpl::stack_slot_size;
}
// + 2 for return address (which we own) and saved rbp,
stack_slots += 2;
// Ok The space we have allocated will look like:
//
//
// FP-> | |
// |---------------------|
// | string[n] |
// |---------------------| <- string_locs[n]
// | string[n-1] |
// |---------------------| <- string_locs[n-1]
// | ... |
// | ... |
// |---------------------| <- string_locs[1]
// | string[0] |
// |---------------------| <- string_locs[0]
// | outbound memory |
// | based arguments |
// | |
// |---------------------|
// | |
// SP-> | out_preserved_slots |
//
//
// Now compute actual number of stack words we need rounding to make
// stack properly aligned.
stack_slots = round_to(stack_slots, 2 * VMRegImpl::slots_per_word);
int stack_size = stack_slots * VMRegImpl::stack_slot_size;
intptr_t start = (intptr_t)__ pc();
// First thing make an ic check to see if we should even be here
// We are free to use all registers as temps without saving them and
// restoring them except rbp. rbp, is the only callee save register
// as far as the interpreter and the compiler(s) are concerned.
const Register ic_reg = rax;
const Register receiver = rcx;
Label hit;
Label exception_pending;
__ verify_oop(receiver);
__ cmpl(ic_reg, Address(receiver, oopDesc::klass_offset_in_bytes()));
__ jcc(Assembler::equal, hit);
__ jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
// verified entry must be aligned for code patching.
// and the first 5 bytes must be in the same cache line
// if we align at 8 then we will be sure 5 bytes are in the same line
__ align(8);
__ bind(hit);
int vep_offset = ((intptr_t)__ pc()) - start;
// The instruction at the verified entry point must be 5 bytes or longer
// because it can be patched on the fly by make_non_entrant. The stack bang
// instruction fits that requirement.
// Generate stack overflow check
if (UseStackBanging) {
if (stack_size <= StackShadowPages*os::vm_page_size()) {
__ bang_stack_with_offset(StackShadowPages*os::vm_page_size());
} else {
__ movl(rax, stack_size);
__ bang_stack_size(rax, rbx);
}
} else {
// need a 5 byte instruction to allow MT safe patching to non-entrant
__ fat_nop();
}
assert(((int)__ pc() - start - vep_offset) >= 5,
"valid size for make_non_entrant");
// Generate a new frame for the wrapper.
__ enter();
// -2 because return address is already present and so is saved rbp,
if (stack_size - 2*wordSize != 0) {
__ subl(rsp, stack_size - 2*wordSize);
}
// Frame is now completed as far a size and linkage.
int frame_complete = ((intptr_t)__ pc()) - start;
// First thing we do store all the args as if we are doing the call.
// Since the C calling convention is stack based that ensures that
// all the Java register args are stored before we need to convert any
// string we might have.
int sid = 0;
int c_arg, j_arg;
int string_reg = 0;
for (j_arg = first_arg_to_pass, c_arg = 0 ;
j_arg < total_args_passed ; j_arg++, c_arg++ ) {
VMRegPair src = in_regs[j_arg];
VMRegPair dst = out_regs[c_arg];
assert(dst.first()->is_stack() || in_sig_bt[j_arg] == T_VOID,
"stack based abi assumed");
switch (in_sig_bt[j_arg]) {
case T_ARRAY:
case T_OBJECT:
if (out_sig_bt[c_arg] == T_ADDRESS) {
// Any register based arg for a java string after the first
// will be destroyed by the call to get_utf so we store
// the original value in the location the utf string address
// will eventually be stored.
if (src.first()->is_reg()) {
if (string_reg++ != 0) {
simple_move32(masm, src, dst);
}
}
} else if (out_sig_bt[c_arg] == T_INT || out_sig_bt[c_arg] == T_LONG) {
// need to unbox a one-word value
Register in_reg = rax;
if ( src.first()->is_reg() ) {
in_reg = src.first()->as_Register();
} else {
simple_move32(masm, src, in_reg->as_VMReg());
}
Label skipUnbox;
__ movl(Address(rsp, reg2offset_out(dst.first())), NULL_WORD);
if ( out_sig_bt[c_arg] == T_LONG ) {
__ movl(Address(rsp, reg2offset_out(dst.second())), NULL_WORD);
}
__ testl(in_reg, in_reg);
__ jcc(Assembler::zero, skipUnbox);
assert(dst.first()->is_stack() &&
(!dst.second()->is_valid() || dst.second()->is_stack()),
"value(s) must go into stack slots");
if ( out_sig_bt[c_arg] == T_LONG ) {
__ movl(rbx, Address(in_reg,
box_offset + VMRegImpl::stack_slot_size));
__ movl(Address(rsp, reg2offset_out(dst.second())), rbx);
}
__ movl(in_reg, Address(in_reg, box_offset));
__ movl(Address(rsp, reg2offset_out(dst.first())), in_reg);
__ bind(skipUnbox);
} else {
// Convert the arg to NULL
__ movl(Address(rsp, reg2offset_out(dst.first())), NULL_WORD);
}
if (out_sig_bt[c_arg] == T_LONG) {
assert(out_sig_bt[c_arg+1] == T_VOID, "must be");
++c_arg; // Move over the T_VOID To keep the loop indices in sync
}
break;
case T_VOID:
break;
case T_FLOAT:
float_move(masm, src, dst);
break;
case T_DOUBLE:
assert( j_arg + 1 < total_args_passed &&
in_sig_bt[j_arg + 1] == T_VOID, "bad arg list");
double_move(masm, src, dst);
break;
case T_LONG :
long_move(masm, src, dst);
break;
case T_ADDRESS: assert(false, "found T_ADDRESS in java args");
default:
simple_move32(masm, src, dst);
}
}
// Now we must convert any string we have to utf8
//
for (sid = 0, j_arg = first_arg_to_pass, c_arg = 0 ;
sid < total_strings ; j_arg++, c_arg++ ) {
if (out_sig_bt[c_arg] == T_ADDRESS) {
Address utf8_addr = Address(
rsp, string_locs[sid++] * VMRegImpl::stack_slot_size);
__ leal(rax, utf8_addr);
// The first string we find might still be in the original java arg
// register
VMReg orig_loc = in_regs[j_arg].first();
Register string_oop;
// This is where the argument will eventually reside
Address dest = Address(rsp, reg2offset_out(out_regs[c_arg].first()));
if (sid == 1 && orig_loc->is_reg()) {
string_oop = orig_loc->as_Register();
assert(string_oop != rax, "smashed arg");
} else {
if (orig_loc->is_reg()) {
// Get the copy of the jls object
__ movl(rcx, dest);
} else {
// arg is still in the original location
__ movl(rcx, Address(rbp, reg2offset_in(orig_loc)));
}
string_oop = rcx;
}
Label nullString;
__ movl(dest, NULL_WORD);
__ testl(string_oop, string_oop);
__ jcc(Assembler::zero, nullString);
// Now we can store the address of the utf string as the argument
__ movl(dest, rax);
// And do the conversion
__ call_VM_leaf(CAST_FROM_FN_PTR(
address, SharedRuntime::get_utf), string_oop, rax);
__ bind(nullString);
}
if (in_sig_bt[j_arg] == T_OBJECT && out_sig_bt[c_arg] == T_LONG) {
assert(out_sig_bt[c_arg+1] == T_VOID, "must be");
++c_arg; // Move over the T_VOID To keep the loop indices in sync
}
}
// Ok now we are done. Need to place the nop that dtrace wants in order to
// patch in the trap
int patch_offset = ((intptr_t)__ pc()) - start;
__ nop();
// Return
__ leave();
__ ret(0);
__ flush();
nmethod *nm = nmethod::new_dtrace_nmethod(
method, masm->code(), vep_offset, patch_offset, frame_complete,
stack_slots / VMRegImpl::slots_per_word);
return nm;
}
#endif // HAVE_DTRACE_H
// this function returns the adjust size (in number of words) to a c2i adapter // this function returns the adjust size (in number of words) to a c2i adapter
// activation for use during deoptimization // activation for use during deoptimization
int Deoptimization::last_frame_adjust(int callee_parameters, int callee_locals ) { int Deoptimization::last_frame_adjust(int callee_parameters, int callee_locals ) {

621
hotspot/src/cpu/x86/vm/sharedRuntime_x86_64.cpp
View File

@ -1886,6 +1886,627 @@ nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm,
} }
#ifdef HAVE_DTRACE_H
// ---------------------------------------------------------------------------
// Generate a dtrace nmethod for a given signature. The method takes arguments
// in the Java compiled code convention, marshals them to the native
// abi and then leaves nops at the position you would expect to call a native
// function. When the probe is enabled the nops are replaced with a trap
// instruction that dtrace inserts and the trace will cause a notification
// to dtrace.
//
// The probes are only able to take primitive types and java/lang/String as
// arguments. No other java types are allowed. Strings are converted to utf8
// strings so that from dtrace point of view java strings are converted to C
// strings. There is an arbitrary fixed limit on the total space that a method
// can use for converting the strings. (256 chars per string in the signature).
// So any java string larger then this is truncated.
static int fp_offset[ConcreteRegisterImpl::number_of_registers] = { 0 };
static bool offsets_initialized = false;
nmethod *SharedRuntime::generate_dtrace_nmethod(MacroAssembler *masm,
methodHandle method) {
// generate_dtrace_nmethod is guarded by a mutex so we are sure to
// be single threaded in this method.
assert(AdapterHandlerLibrary_lock->owned_by_self(), "must be");
if (!offsets_initialized) {
fp_offset[c_rarg0->as_VMReg()->value()] = -1 * wordSize;
fp_offset[c_rarg1->as_VMReg()->value()] = -2 * wordSize;
fp_offset[c_rarg2->as_VMReg()->value()] = -3 * wordSize;
fp_offset[c_rarg3->as_VMReg()->value()] = -4 * wordSize;
fp_offset[c_rarg4->as_VMReg()->value()] = -5 * wordSize;
fp_offset[c_rarg5->as_VMReg()->value()] = -6 * wordSize;
fp_offset[c_farg0->as_VMReg()->value()] = -7 * wordSize;
fp_offset[c_farg1->as_VMReg()->value()] = -8 * wordSize;
fp_offset[c_farg2->as_VMReg()->value()] = -9 * wordSize;
fp_offset[c_farg3->as_VMReg()->value()] = -10 * wordSize;
fp_offset[c_farg4->as_VMReg()->value()] = -11 * wordSize;
fp_offset[c_farg5->as_VMReg()->value()] = -12 * wordSize;
fp_offset[c_farg6->as_VMReg()->value()] = -13 * wordSize;
fp_offset[c_farg7->as_VMReg()->value()] = -14 * wordSize;
offsets_initialized = true;
}
// Fill in the signature array, for the calling-convention call.
int total_args_passed = method->size_of_parameters();
BasicType* in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed);
VMRegPair *in_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed);
// The signature we are going to use for the trap that dtrace will see
// java/lang/String is converted. We drop "this" and any other object
// is converted to NULL. (A one-slot java/lang/Long object reference
// is converted to a two-slot long, which is why we double the allocation).
BasicType* out_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed * 2);
VMRegPair* out_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed * 2);
int i=0;
int total_strings = 0;
int first_arg_to_pass = 0;
int total_c_args = 0;
int box_offset = java_lang_boxing_object::value_offset_in_bytes();
// Skip the receiver as dtrace doesn't want to see it
if( !method->is_static() ) {
in_sig_bt[i++] = T_OBJECT;
first_arg_to_pass = 1;
}
// We need to convert the java args to where a native (non-jni) function
// would expect them. To figure out where they go we convert the java
// signature to a C signature.
SignatureStream ss(method->signature());
for ( ; !ss.at_return_type(); ss.next()) {
BasicType bt = ss.type();
in_sig_bt[i++] = bt; // Collect remaining bits of signature
out_sig_bt[total_c_args++] = bt;
if( bt == T_OBJECT) {
symbolOop s = ss.as_symbol_or_null();
if (s == vmSymbols::java_lang_String()) {
total_strings++;
out_sig_bt[total_c_args-1] = T_ADDRESS;
} else if (s == vmSymbols::java_lang_Boolean() ||
s == vmSymbols::java_lang_Character() ||
s == vmSymbols::java_lang_Byte() ||
s == vmSymbols::java_lang_Short() ||
s == vmSymbols::java_lang_Integer() ||
s == vmSymbols::java_lang_Float()) {
out_sig_bt[total_c_args-1] = T_INT;
} else if (s == vmSymbols::java_lang_Long() ||
s == vmSymbols::java_lang_Double()) {
out_sig_bt[total_c_args-1] = T_LONG;
out_sig_bt[total_c_args++] = T_VOID;
}
} else if ( bt == T_LONG || bt == T_DOUBLE ) {
in_sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots
// We convert double to long
out_sig_bt[total_c_args-1] = T_LONG;
out_sig_bt[total_c_args++] = T_VOID;
} else if ( bt == T_FLOAT) {
// We convert float to int
out_sig_bt[total_c_args-1] = T_INT;
}
}
assert(i==total_args_passed, "validly parsed signature");
// Now get the compiled-Java layout as input arguments
int comp_args_on_stack;
comp_args_on_stack = SharedRuntime::java_calling_convention(
in_sig_bt, in_regs, total_args_passed, false);
// Now figure out where the args must be stored and how much stack space
// they require (neglecting out_preserve_stack_slots but space for storing
// the 1st six register arguments). It's weird see int_stk_helper.
int out_arg_slots;
out_arg_slots = c_calling_convention(out_sig_bt, out_regs, total_c_args);
// Calculate the total number of stack slots we will need.
// First count the abi requirement plus all of the outgoing args
int stack_slots = SharedRuntime::out_preserve_stack_slots() + out_arg_slots;
// Now space for the string(s) we must convert
int* string_locs = NEW_RESOURCE_ARRAY(int, total_strings + 1);
for (i = 0; i < total_strings ; i++) {
string_locs[i] = stack_slots;
stack_slots += max_dtrace_string_size / VMRegImpl::stack_slot_size;
}
// Plus the temps we might need to juggle register args
// regs take two slots each
stack_slots += (Argument::n_int_register_parameters_c +
Argument::n_float_register_parameters_c) * 2;
// + 4 for return address (which we own) and saved rbp,
stack_slots += 4;
// Ok The space we have allocated will look like:
//
//
// FP-> | |
// |---------------------|
// | string[n] |
// |---------------------| <- string_locs[n]
// | string[n-1] |
// |---------------------| <- string_locs[n-1]
// | ... |
// | ... |
// |---------------------| <- string_locs[1]
// | string[0] |
// |---------------------| <- string_locs[0]
// | outbound memory |
// | based arguments |
// | |
// |---------------------|
// | |
// SP-> | out_preserved_slots |
//
//
// Now compute actual number of stack words we need rounding to make
// stack properly aligned.
stack_slots = round_to(stack_slots, 4 * VMRegImpl::slots_per_word);
int stack_size = stack_slots * VMRegImpl::stack_slot_size;
intptr_t start = (intptr_t)__ pc();
// First thing make an ic check to see if we should even be here
// We are free to use all registers as temps without saving them and
// restoring them except rbp. rbp, is the only callee save register
// as far as the interpreter and the compiler(s) are concerned.
const Register ic_reg = rax;
const Register receiver = rcx;
Label hit;
Label exception_pending;
__ verify_oop(receiver);
__ cmpl(ic_reg, Address(receiver, oopDesc::klass_offset_in_bytes()));
__ jcc(Assembler::equal, hit);
__ jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
// verified entry must be aligned for code patching.
// and the first 5 bytes must be in the same cache line
// if we align at 8 then we will be sure 5 bytes are in the same line
__ align(8);
__ bind(hit);
int vep_offset = ((intptr_t)__ pc()) - start;
// The instruction at the verified entry point must be 5 bytes or longer
// because it can be patched on the fly by make_non_entrant. The stack bang
// instruction fits that requirement.
// Generate stack overflow check
if (UseStackBanging) {
if (stack_size <= StackShadowPages*os::vm_page_size()) {
__ bang_stack_with_offset(StackShadowPages*os::vm_page_size());
} else {
__ movl(rax, stack_size);
__ bang_stack_size(rax, rbx);
}
} else {
// need a 5 byte instruction to allow MT safe patching to non-entrant
__ fat_nop();
}
assert(((uintptr_t)__ pc() - start - vep_offset) >= 5,
"valid size for make_non_entrant");
// Generate a new frame for the wrapper.
__ enter();
// -4 because return address is already present and so is saved rbp,
if (stack_size - 2*wordSize != 0) {
__ subq(rsp, stack_size - 2*wordSize);
}
// Frame is now completed as far a size and linkage.
int frame_complete = ((intptr_t)__ pc()) - start;
int c_arg, j_arg;
// State of input register args
bool live[ConcreteRegisterImpl::number_of_registers];
live[j_rarg0->as_VMReg()->value()] = false;
live[j_rarg1->as_VMReg()->value()] = false;
live[j_rarg2->as_VMReg()->value()] = false;
live[j_rarg3->as_VMReg()->value()] = false;
live[j_rarg4->as_VMReg()->value()] = false;
live[j_rarg5->as_VMReg()->value()] = false;
live[j_farg0->as_VMReg()->value()] = false;
live[j_farg1->as_VMReg()->value()] = false;
live[j_farg2->as_VMReg()->value()] = false;
live[j_farg3->as_VMReg()->value()] = false;
live[j_farg4->as_VMReg()->value()] = false;
live[j_farg5->as_VMReg()->value()] = false;
live[j_farg6->as_VMReg()->value()] = false;
live[j_farg7->as_VMReg()->value()] = false;
bool rax_is_zero = false;
// All args (except strings) destined for the stack are moved first
for (j_arg = first_arg_to_pass, c_arg = 0 ;
j_arg < total_args_passed ; j_arg++, c_arg++ ) {
VMRegPair src = in_regs[j_arg];
VMRegPair dst = out_regs[c_arg];
// Get the real reg value or a dummy (rsp)
int src_reg = src.first()->is_reg() ?
src.first()->value() :
rsp->as_VMReg()->value();
bool useless = in_sig_bt[j_arg] == T_ARRAY ||
(in_sig_bt[j_arg] == T_OBJECT &&
out_sig_bt[c_arg] != T_INT &&
out_sig_bt[c_arg] != T_ADDRESS &&
out_sig_bt[c_arg] != T_LONG);
live[src_reg] = !useless;
if (dst.first()->is_stack()) {
// Even though a string arg in a register is still live after this loop
// after the string conversion loop (next) it will be dead so we take
// advantage of that now for simpler code to manage live.
live[src_reg] = false;
switch (in_sig_bt[j_arg]) {
case T_ARRAY:
case T_OBJECT:
{
Address stack_dst(rsp, reg2offset_out(dst.first()));
if (out_sig_bt[c_arg] == T_INT || out_sig_bt[c_arg] == T_LONG) {
// need to unbox a one-word value
Register in_reg = rax;
if ( src.first()->is_reg() ) {
in_reg = src.first()->as_Register();
} else {
__ movq(rax, Address(rbp, reg2offset_in(src.first())));
rax_is_zero = false;
}
Label skipUnbox;
__ movptr(Address(rsp, reg2offset_out(dst.first())),
(int32_t)NULL_WORD);
__ testq(in_reg, in_reg);
__ jcc(Assembler::zero, skipUnbox);
Address src1(in_reg, box_offset);
if ( out_sig_bt[c_arg] == T_LONG ) {
__ movq(in_reg, src1);
__ movq(stack_dst, in_reg);
assert(out_sig_bt[c_arg+1] == T_VOID, "must be");
++c_arg; // skip over T_VOID to keep the loop indices in sync
} else {
__ movl(in_reg, src1);
__ movl(stack_dst, in_reg);
}
__ bind(skipUnbox);
} else if (out_sig_bt[c_arg] != T_ADDRESS) {
// Convert the arg to NULL
if (!rax_is_zero) {
__ xorq(rax, rax);
rax_is_zero = true;
}
__ movq(stack_dst, rax);
}
}
break;
case T_VOID:
break;
case T_FLOAT:
// This does the right thing since we know it is destined for the
// stack
float_move(masm, src, dst);
break;
case T_DOUBLE:
// This does the right thing since we know it is destined for the
// stack
double_move(masm, src, dst);
break;
case T_LONG :
long_move(masm, src, dst);
break;
case T_ADDRESS: assert(false, "found T_ADDRESS in java args");
default:
move32_64(masm, src, dst);
}
}
}
// If we have any strings we must store any register based arg to the stack
// This includes any still live xmm registers too.
int sid = 0;
if (total_strings > 0 ) {
for (j_arg = first_arg_to_pass, c_arg = 0 ;
j_arg < total_args_passed ; j_arg++, c_arg++ ) {
VMRegPair src = in_regs[j_arg];
VMRegPair dst = out_regs[c_arg];
if (src.first()->is_reg()) {
Address src_tmp(rbp, fp_offset[src.first()->value()]);
// string oops were left untouched by the previous loop even if the
// eventual (converted) arg is destined for the stack so park them
// away now (except for first)
if (out_sig_bt[c_arg] == T_ADDRESS) {
Address utf8_addr = Address(
rsp, string_locs[sid++] * VMRegImpl::stack_slot_size);
if (sid != 1) {
// The first string arg won't be killed until after the utf8
// conversion
__ movq(utf8_addr, src.first()->as_Register());
}
} else if (dst.first()->is_reg()) {
if (in_sig_bt[j_arg] == T_FLOAT || in_sig_bt[j_arg] == T_DOUBLE) {
// Convert the xmm register to an int and store it in the reserved
// location for the eventual c register arg
XMMRegister f = src.first()->as_XMMRegister();
if (in_sig_bt[j_arg] == T_FLOAT) {
__ movflt(src_tmp, f);
} else {
__ movdbl(src_tmp, f);
}
} else {
// If the arg is an oop type we don't support don't bother to store
// it remember string was handled above.
bool useless = in_sig_bt[j_arg] == T_ARRAY ||
(in_sig_bt[j_arg] == T_OBJECT &&
out_sig_bt[c_arg] != T_INT &&
out_sig_bt[c_arg] != T_LONG);
if (!useless) {
__ movq(src_tmp, src.first()->as_Register());
}
}
}
}
if (in_sig_bt[j_arg] == T_OBJECT && out_sig_bt[c_arg] == T_LONG) {
assert(out_sig_bt[c_arg+1] == T_VOID, "must be");
++c_arg; // skip over T_VOID to keep the loop indices in sync
}
}
// Now that the volatile registers are safe, convert all the strings
sid = 0;
for (j_arg = first_arg_to_pass, c_arg = 0 ;
j_arg < total_args_passed ; j_arg++, c_arg++ ) {
if (out_sig_bt[c_arg] == T_ADDRESS) {
// It's a string
Address utf8_addr = Address(
rsp, string_locs[sid++] * VMRegImpl::stack_slot_size);
// The first string we find might still be in the original java arg
// register
VMReg src = in_regs[j_arg].first();
// We will need to eventually save the final argument to the trap
// in the von-volatile location dedicated to src. This is the offset
// from fp we will use.
int src_off = src->is_reg() ?
fp_offset[src->value()] : reg2offset_in(src);
// This is where the argument will eventually reside
VMRegPair dst = out_regs[c_arg];
if (src->is_reg()) {
if (sid == 1) {
__ movq(c_rarg0, src->as_Register());
} else {
__ movq(c_rarg0, utf8_addr);
}
} else {
// arg is still in the original location
__ movq(c_rarg0, Address(rbp, reg2offset_in(src)));
}
Label done, convert;
// see if the oop is NULL
__ testq(c_rarg0, c_rarg0);
__ jcc(Assembler::notEqual, convert);
if (dst.first()->is_reg()) {
// Save the ptr to utf string in the origina src loc or the tmp
// dedicated to it
__ movq(Address(rbp, src_off), c_rarg0);
} else {
__ movq(Address(rsp, reg2offset_out(dst.first())), c_rarg0);
}
__ jmp(done);
__ bind(convert);
__ lea(c_rarg1, utf8_addr);
if (dst.first()->is_reg()) {
__ movq(Address(rbp, src_off), c_rarg1);
} else {
__ movq(Address(rsp, reg2offset_out(dst.first())), c_rarg1);
}
// And do the conversion
__ call(RuntimeAddress(
CAST_FROM_FN_PTR(address, SharedRuntime::get_utf)));
__ bind(done);
}
if (in_sig_bt[j_arg] == T_OBJECT && out_sig_bt[c_arg] == T_LONG) {
assert(out_sig_bt[c_arg+1] == T_VOID, "must be");
++c_arg; // skip over T_VOID to keep the loop indices in sync
}
}
// The get_utf call killed all the c_arg registers
live[c_rarg0->as_VMReg()->value()] = false;
live[c_rarg1->as_VMReg()->value()] = false;
live[c_rarg2->as_VMReg()->value()] = false;
live[c_rarg3->as_VMReg()->value()] = false;
live[c_rarg4->as_VMReg()->value()] = false;
live[c_rarg5->as_VMReg()->value()] = false;
live[c_farg0->as_VMReg()->value()] = false;
live[c_farg1->as_VMReg()->value()] = false;
live[c_farg2->as_VMReg()->value()] = false;
live[c_farg3->as_VMReg()->value()] = false;
live[c_farg4->as_VMReg()->value()] = false;
live[c_farg5->as_VMReg()->value()] = false;
live[c_farg6->as_VMReg()->value()] = false;
live[c_farg7->as_VMReg()->value()] = false;
}
// Now we can finally move the register args to their desired locations
rax_is_zero = false;
for (j_arg = first_arg_to_pass, c_arg = 0 ;
j_arg < total_args_passed ; j_arg++, c_arg++ ) {
VMRegPair src = in_regs[j_arg];
VMRegPair dst = out_regs[c_arg];
// Only need to look for args destined for the interger registers (since we
// convert float/double args to look like int/long outbound)
if (dst.first()->is_reg()) {
Register r = dst.first()->as_Register();
// Check if the java arg is unsupported and thereofre useless
bool useless = in_sig_bt[j_arg] == T_ARRAY ||
(in_sig_bt[j_arg] == T_OBJECT &&
out_sig_bt[c_arg] != T_INT &&
out_sig_bt[c_arg] != T_ADDRESS &&
out_sig_bt[c_arg] != T_LONG);
// If we're going to kill an existing arg save it first
if (live[dst.first()->value()]) {
// you can't kill yourself
if (src.first() != dst.first()) {
__ movq(Address(rbp, fp_offset[dst.first()->value()]), r);
}
}
if (src.first()->is_reg()) {
if (live[src.first()->value()] ) {
if (in_sig_bt[j_arg] == T_FLOAT) {
__ movdl(r, src.first()->as_XMMRegister());
} else if (in_sig_bt[j_arg] == T_DOUBLE) {
__ movdq(r, src.first()->as_XMMRegister());
} else if (r != src.first()->as_Register()) {
if (!useless) {
__ movq(r, src.first()->as_Register());
}
}
} else {
// If the arg is an oop type we don't support don't bother to store
// it
if (!useless) {
if (in_sig_bt[j_arg] == T_DOUBLE ||
in_sig_bt[j_arg] == T_LONG ||
in_sig_bt[j_arg] == T_OBJECT ) {
__ movq(r, Address(rbp, fp_offset[src.first()->value()]));
} else {
__ movl(r, Address(rbp, fp_offset[src.first()->value()]));
}
}
}
live[src.first()->value()] = false;
} else if (!useless) {
// full sized move even for int should be ok
__ movq(r, Address(rbp, reg2offset_in(src.first())));
}
// At this point r has the original java arg in the final location
// (assuming it wasn't useless). If the java arg was an oop
// we have a bit more to do
if (in_sig_bt[j_arg] == T_ARRAY || in_sig_bt[j_arg] == T_OBJECT ) {
if (out_sig_bt[c_arg] == T_INT || out_sig_bt[c_arg] == T_LONG) {
// need to unbox a one-word value
Label skip;
__ testq(r, r);
__ jcc(Assembler::equal, skip);
Address src1(r, box_offset);
if ( out_sig_bt[c_arg] == T_LONG ) {
__ movq(r, src1);
} else {
__ movl(r, src1);
}
__ bind(skip);
} else if (out_sig_bt[c_arg] != T_ADDRESS) {
// Convert the arg to NULL
__ xorq(r, r);
}
}
// dst can longer be holding an input value
live[dst.first()->value()] = false;
}
if (in_sig_bt[j_arg] == T_OBJECT && out_sig_bt[c_arg] == T_LONG) {
assert(out_sig_bt[c_arg+1] == T_VOID, "must be");
++c_arg; // skip over T_VOID to keep the loop indices in sync
}
}
// Ok now we are done. Need to place the nop that dtrace wants in order to
// patch in the trap
int patch_offset = ((intptr_t)__ pc()) - start;
__ nop();
// Return
__ leave();
__ ret(0);
__ flush();
nmethod *nm = nmethod::new_dtrace_nmethod(
method, masm->code(), vep_offset, patch_offset, frame_complete,
stack_slots / VMRegImpl::slots_per_word);
return nm;
}
#endif // HAVE_DTRACE_H
// this function returns the adjust size (in number of words) to a c2i adapter // this function returns the adjust size (in number of words) to a c2i adapter
// activation for use during deoptimization // activation for use during deoptimization
int Deoptimization::last_frame_adjust(int callee_parameters, int callee_locals ) { int Deoptimization::last_frame_adjust(int callee_parameters, int callee_locals ) {

39
hotspot/src/os/linux/vm/dtraceJSDT_linux.cpp Normal file
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/*
* Copyright 1997-2007 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_dtraceJSDT_linux.cpp.incl"
int DTraceJSDT::pd_activate(
void* baseAddress, jstring module,
jint providers_count, JVM_DTraceProvider* providers) {
return -1;
}
void DTraceJSDT::pd_dispose(int handle) {
}
jboolean DTraceJSDT::pd_is_supported() {
return false;
}

685
hotspot/src/os/solaris/vm/dtraceJSDT_solaris.cpp Normal file
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/*
* Copyright 2005-2006 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_dtraceJSDT_solaris.cpp.incl"
#ifdef HAVE_DTRACE_H
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <dtrace.h>
static const char* devname = "/dev/dtrace/helper";
static const char* olddevname = "/devices/pseudo/dtrace@0:helper";
static const char* string_sig = "uintptr_t";
static const char* int_sig = "long";
static const char* long_sig = "long long";
static void printDOFHelper(dof_helper_t* helper);
static int dofhelper_open() {
int fd;
if ((fd = open64(devname, O_RDWR)) < 0) {
// Optimize next calls
devname = olddevname;
if ((fd = open64(devname, O_RDWR)) < 0) {
return -1;
}
}
return fd;
}
static jint dof_register(jstring module, uint8_t* dof, void* modaddr) {
int probe;
dof_helper_t dh;
int fd;
memset(&dh, 0, sizeof(dh));
char* module_name = java_lang_String::as_utf8_string(
JNIHandles::resolve_non_null(module));
jio_snprintf(dh.dofhp_mod, sizeof(dh.dofhp_mod), "%s", module_name);
dh.dofhp_dof = (uint64_t)dof;
dh.dofhp_addr = (uint64_t)modaddr;
fd = dofhelper_open();
if (fd < 0)
return -1;
probe = ioctl(fd, DTRACEHIOC_ADDDOF, &dh);
close(fd);
if (PrintDTraceDOF) {
printDOFHelper(&dh);
tty->print_cr("DOF helper id = %d", probe);
}
return probe;
}
int DTraceJSDT::pd_activate(
void* moduleBaseAddress, jstring module,
jint providers_count, JVM_DTraceProvider* providers) {
// We need sections:
// (1) STRTAB
// (
// (2) PROVIDER
// (3) PROBES
// (4) PROBOFFS
// (5) PROBARGS
// ) * Number of Providers
// Type of sections we create
enum {
STRTAB = 0,
PROVIDERS = 1,
PROBES = 2,
PROBE_OFFSETS = 3,
ARG_OFFSETS = 4,
NUM_SECTIONS = 5
};
static int alignment_for[NUM_SECTIONS] = { 1, 4, 8, 4, 1 };
ResourceMark rm;
uint32_t num_sections = 1 + 4 * providers_count;
uint32_t offset = sizeof(dof_hdr_t) + (num_sections * sizeof(dof_sec_t));
uint32_t* secoffs = NEW_RESOURCE_ARRAY(uint32_t, num_sections);
uint32_t* secsize = NEW_RESOURCE_ARRAY(uint32_t, num_sections);
// Store offsets of all strings here in such order:
// zero-string (always 0)
// provider1-name
// probe1-function
// probe1-name
// arg-1
// arg-2
// ...
// probe2-function
// probe2-name
// arg-1
// arg-2
// provider2-name
// ...
uint32_t strcount = 0;
// Count the number of strings we'll need
for(int prvc = 0; prvc < providers_count; ++prvc) {
JVM_DTraceProvider* provider = &providers[prvc];
// Provider name
++strcount;
for(int prbc = 0; prbc < provider->probe_count; ++prbc) {
JVM_DTraceProbe* p = &(provider->probes[prbc]);
symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature();
// function + name + one per argument
strcount += 2 + ArgumentCount(sig).size();
}
}
// Create place for string offsets
uint32_t* stroffs = NEW_RESOURCE_ARRAY(uint32_t, strcount + 1);
uint32_t string_index = 0;
uint32_t curstr = 0;
// First we need an empty string: ""
stroffs[curstr++] = string_index;
string_index += strlen("") + 1;
for(int prvc = 0; prvc < providers_count; ++prvc) {
JVM_DTraceProvider* provider = &providers[prvc];
char* provider_name = java_lang_String::as_utf8_string(
JNIHandles::resolve_non_null(provider->name));
stroffs[curstr++] = string_index;
string_index += strlen(provider_name) + 1;
// All probes
for(int prbc = 0; prbc < provider->probe_count; ++prbc) {
JVM_DTraceProbe* p = &(provider->probes[prbc]);
char* function = java_lang_String::as_utf8_string(
JNIHandles::resolve_non_null(p->function));
stroffs[curstr++] = string_index;
string_index += strlen(function) + 1;
char* name = java_lang_String::as_utf8_string(
JNIHandles::resolve_non_null(p->name));
stroffs[curstr++] = string_index;
string_index += strlen(name) + 1;
symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature();
SignatureStream ss(sig);
for ( ; !ss.at_return_type(); ss.next()) {
BasicType bt = ss.type();
const char* t = NULL;
if (bt == T_OBJECT &&
ss.as_symbol_or_null() == vmSymbols::java_lang_String()) {
t = string_sig;
} else if (bt == T_LONG) {
t = long_sig;
} else {
t = int_sig;
}
stroffs[curstr++] = string_index;
string_index += strlen(t) + 1;
}
}
}
secoffs[STRTAB] = offset;
secsize[STRTAB] = string_index;
offset += string_index;
// Calculate the size of the rest
for(int prvc = 0; prvc < providers_count; ++prvc) {
JVM_DTraceProvider* provider = &providers[prvc];
size_t provider_sec = PROVIDERS + prvc * 4;
size_t probe_sec = PROBES + prvc * 4;
size_t probeoffs_sec = PROBE_OFFSETS + prvc * 4;
size_t argoffs_sec = ARG_OFFSETS + prvc * 4;
// Allocate space for the provider data struction
secoffs[provider_sec] = align_size_up(offset, alignment_for[PROVIDERS]);
secsize[provider_sec] = sizeof(dof_provider_t);
offset = secoffs[provider_sec] + secsize[provider_sec];
// Allocate space for all the probes
secoffs[probe_sec] = align_size_up(offset, alignment_for[PROBES]);
secsize[probe_sec] = sizeof(dof_probe_t) * provider->probe_count;
offset = secoffs[probe_sec] + secsize[probe_sec];
// Allocate space for the probe offsets
secoffs[probeoffs_sec] = align_size_up(offset, alignment_for[PROBE_OFFSETS]);
secsize[probeoffs_sec] = sizeof(uint32_t) * provider->probe_count;
offset = secoffs[probeoffs_sec] + secsize[probeoffs_sec];
// We need number of arguments argoffs
uint32_t argscount = 0;
for(int prbc = 0; prbc < provider->probe_count; ++prbc) {
JVM_DTraceProbe* p = &(provider->probes[prbc]);
symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature();
argscount += ArgumentCount(sig).size();
}
secoffs[argoffs_sec] = align_size_up(offset, alignment_for[ARG_OFFSETS]);
secsize[argoffs_sec] = sizeof(uint8_t) * argscount;
offset = secoffs[argoffs_sec] + secsize[argoffs_sec];
}
uint32_t size = offset;
uint8_t* dof = NEW_RESOURCE_ARRAY(uint8_t, size);
if (!dof) {
return -1;
}
memset((void*)dof, 0, size);
// Fill memory with proper values
dof_hdr_t* hdr = (dof_hdr_t*)dof;
hdr->dofh_ident[DOF_ID_MAG0] = DOF_MAG_MAG0;
hdr->dofh_ident[DOF_ID_MAG1] = DOF_MAG_MAG1;
hdr->dofh_ident[DOF_ID_MAG2] = DOF_MAG_MAG2;
hdr->dofh_ident[DOF_ID_MAG3] = DOF_MAG_MAG3;
hdr->dofh_ident[DOF_ID_MODEL] = DOF_MODEL_NATIVE; // No variants
hdr->dofh_ident[DOF_ID_ENCODING] = DOF_ENCODE_NATIVE; // No variants
hdr->dofh_ident[DOF_ID_VERSION] = DOF_VERSION_1; // No variants
hdr->dofh_ident[DOF_ID_DIFVERS] = DIF_VERSION_2; // No variants
// all other fields of ident to zero
hdr->dofh_flags = 0;
hdr->dofh_hdrsize = sizeof(dof_hdr_t);
hdr->dofh_secsize = sizeof(dof_sec_t);
hdr->dofh_secnum = num_sections;
hdr->dofh_secoff = sizeof(dof_hdr_t);
hdr->dofh_loadsz = size;
hdr->dofh_filesz = size;
// First section: STRTAB
dof_sec_t* sec = (dof_sec_t*)(dof + sizeof(dof_hdr_t));
sec->dofs_type = DOF_SECT_STRTAB;
sec->dofs_align = alignment_for[STRTAB];
sec->dofs_flags = DOF_SECF_LOAD;
sec->dofs_entsize = 0;
sec->dofs_offset = secoffs[STRTAB];
sec->dofs_size = secsize[STRTAB];
// Make data for this section
char* str = (char*)(dof + sec->dofs_offset);
*str = 0; str += 1; // ""
// Run through all strings again
for(int prvc = 0; prvc < providers_count; ++prvc) {
JVM_DTraceProvider* provider = &providers[prvc];
char* provider_name = java_lang_String::as_utf8_string(
JNIHandles::resolve_non_null(provider->name));
strcpy(str, provider_name);
str += strlen(provider_name) + 1;
// All probes
for(int prbc = 0; prbc < provider->probe_count; ++prbc) {
JVM_DTraceProbe* p = &(provider->probes[prbc]);
char* function = java_lang_String::as_utf8_string(
JNIHandles::resolve_non_null(p->function));
strcpy(str, function);
str += strlen(str) + 1;
char* name = java_lang_String::as_utf8_string(
JNIHandles::resolve_non_null(p->name));
strcpy(str, name);
str += strlen(name) + 1;
symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature();
SignatureStream ss(sig);
for ( ; !ss.at_return_type(); ss.next()) {
BasicType bt = ss.type();
const char* t;
if (bt == T_OBJECT &&
ss.as_symbol_or_null() == vmSymbols::java_lang_String()) {
t = string_sig;
} else if (bt == T_LONG) {
t = long_sig;
} else {
t = int_sig;
}
strcpy(str, t);
str += strlen(t) + 1;
}
}
}
curstr = 1;
for(int prvc = 0; prvc < providers_count; ++prvc) {
JVM_DTraceProvider* provider = &providers[prvc];
size_t provider_sec = PROVIDERS + prvc * 4;
size_t probe_sec = PROBES + prvc * 4;
size_t probeoffs_sec = PROBE_OFFSETS + prvc * 4;
size_t argoffs_sec = ARG_OFFSETS + prvc * 4;
// PROVIDER ///////////////////////////////////////////////////////////////
// Section header
sec = (dof_sec_t*)
(dof + sizeof(dof_hdr_t) + sizeof(dof_sec_t) * provider_sec);
sec->dofs_type = DOF_SECT_PROVIDER;
sec->dofs_align = alignment_for[PROVIDERS];
sec->dofs_flags = DOF_SECF_LOAD;
sec->dofs_entsize = 0;
sec->dofs_offset = secoffs[provider_sec];
sec->dofs_size = secsize[provider_sec];
// Make provider decriiption
dof_provider_t* prv = (dof_provider_t*)(dof + sec->dofs_offset);
prv->dofpv_strtab = STRTAB;
prv->dofpv_probes = probe_sec;
prv->dofpv_prargs = argoffs_sec;
prv->dofpv_proffs = probeoffs_sec;
prv->dofpv_name = stroffs[curstr++]; // Index in string table
prv->dofpv_provattr = DOF_ATTR(
provider->providerAttributes.nameStability,
provider->providerAttributes.dataStability,
provider->providerAttributes.dependencyClass);
prv->dofpv_modattr = DOF_ATTR(
provider->moduleAttributes.nameStability,
provider->moduleAttributes.dataStability,
provider->moduleAttributes.dependencyClass);
prv->dofpv_funcattr = DOF_ATTR(
provider->functionAttributes.nameStability,
provider->functionAttributes.dataStability,
provider->functionAttributes.dependencyClass);
prv->dofpv_nameattr = DOF_ATTR(
provider->nameAttributes.nameStability,
provider->nameAttributes.dataStability,
provider->nameAttributes.dependencyClass);
prv->dofpv_argsattr = DOF_ATTR(
provider->argsAttributes.nameStability,
provider->argsAttributes.dataStability,
provider->argsAttributes.dependencyClass);
// PROBES /////////////////////////////////////////////////////////////////
// Section header
sec = (dof_sec_t*)
(dof + sizeof(dof_hdr_t) + sizeof(dof_sec_t) * probe_sec);
sec->dofs_type = DOF_SECT_PROBES;
sec->dofs_align = alignment_for[PROBES];
sec->dofs_flags = DOF_SECF_LOAD;
sec->dofs_entsize = sizeof(dof_probe_t);
sec->dofs_offset = secoffs[probe_sec];
sec->dofs_size = secsize[probe_sec];
// Make probes descriptions
uint32_t argsoffs = 0;
for(int prbc = 0; prbc < provider->probe_count; ++prbc) {
JVM_DTraceProbe* probe = &(provider->probes[prbc]);
methodOop m = JNIHandles::resolve_jmethod_id(probe->method);
int arg_count = ArgumentCount(m->signature()).size();
assert(m->code() != NULL, "must have an nmethod");
dof_probe_t* prb =
(dof_probe_t*)(dof + sec->dofs_offset + prbc * sizeof(dof_probe_t));
prb->dofpr_addr = (uint64_t)m->code()->entry_point();
prb->dofpr_func = stroffs[curstr++]; // Index in string table
prb->dofpr_name = stroffs[curstr++]; // Index in string table
prb->dofpr_nargv = stroffs[curstr ]; // Index in string table
// We spent siglen strings here
curstr += arg_count;
prb->dofpr_xargv = prb->dofpr_nargv; // Same bunch of strings
prb->dofpr_argidx = argsoffs;
prb->dofpr_offidx = prbc;
prb->dofpr_nargc = arg_count;
prb->dofpr_xargc = arg_count;
prb->dofpr_noffs = 1; // Number of offsets
// Next bunch of offsets
argsoffs += arg_count;
}
// PROFFS /////////////////////////////////////////////////////////////////
// Section header
sec = (dof_sec_t*)
(dof + sizeof(dof_hdr_t) + sizeof(dof_sec_t) * probeoffs_sec);
sec->dofs_type = DOF_SECT_PROFFS;
sec->dofs_align = alignment_for[PROBE_OFFSETS];
sec->dofs_flags = DOF_SECF_LOAD;
sec->dofs_entsize = sizeof(uint32_t);
sec->dofs_offset = secoffs[probeoffs_sec];
sec->dofs_size = secsize[probeoffs_sec];
// Make offsets
for (int prbc = 0; prbc < provider->probe_count; ++prbc) {
uint32_t* pof =
(uint32_t*)(dof + sec->dofs_offset + sizeof(uint32_t) * prbc);
JVM_DTraceProbe* probe = &(provider->probes[prbc]);
methodOop m = JNIHandles::resolve_jmethod_id(probe->method);
*pof = m->code()->trap_offset();
}
// PRARGS /////////////////////////////////////////////////////////////////
// Section header
sec = (dof_sec_t*)
(dof + sizeof(dof_hdr_t) + sizeof(dof_sec_t) * argoffs_sec);
sec->dofs_type = DOF_SECT_PRARGS;
sec->dofs_align = alignment_for[ARG_OFFSETS];
sec->dofs_flags = DOF_SECF_LOAD;
sec->dofs_entsize = sizeof(uint8_t);
sec->dofs_offset = secoffs[argoffs_sec];
sec->dofs_size = secsize[argoffs_sec];
// Make arguments
uint8_t* par = (uint8_t*)(dof + sec->dofs_offset);
for (int prbc = 0; prbc < provider->probe_count; ++prbc) {
JVM_DTraceProbe* p = &(provider->probes[prbc]);
symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature();
uint8_t count = (uint8_t)ArgumentCount(sig).size();
for (uint8_t i = 0; i < count; ++i) {
*par++ = i;
}
}
}
// Register module
return dof_register(module, dof, moduleBaseAddress);
}
void DTraceJSDT::pd_dispose(int handle) {
int fd;
if (handle == -1) {
return;
}
fd = dofhelper_open();
if (fd < 0)
return;
ioctl(fd, DTRACEHIOC_REMOVE, handle);
close(fd);
}
jboolean DTraceJSDT::pd_is_supported() {
int fd = dofhelper_open();
if (fd < 0) {
return false;
}
close(fd);
return true;
}
static const char* dofSecTypeFor(uint32_t type) {
switch (type) {
case 0: return "DOF_SECT_NONE";
case 1: return "DOF_SECT_COMMENTS";
case 2: return "DOF_SECT_SOURCE";
case 3: return "DOF_SECT_ECBDESC";
case 4: return "DOF_SECT_PROBEDESC";
case 5: return "DOF_SECT_ACTDESC";
case 6: return "DOF_SECT_DIFOHDR";
case 7: return "DOF_SECT_DIF";
case 8: return "DOF_SECT_STRTAB";
case 9: return "DOF_SECT_VARTAB";
case 10: return "DOF_SECT_RELTAB";
case 11: return "DOF_SECT_TYPETAB";
case 12: return "DOF_SECT_URELHDR";
case 13: return "DOF_SECT_KRELHDR";
case 14: return "DOF_SECT_OPTDESC";
case 15: return "DOF_SECT_PROVIDER";
case 16: return "DOF_SECT_PROBES";
case 17: return "DOF_SECT_PRARGS";
case 18: return "DOF_SECT_PROFFS";
case 19: return "DOF_SECT_INTTAB";
case 20: return "DOF_SECT_UTSNAME";
case 21: return "DOF_SECT_XLTAB";
case 22: return "DOF_SECT_XLMEMBERS";
case 23: return "DOF_SECT_XLIMPORT";
case 24: return "DOF_SECT_XLEXPORT";
case 25: return "DOF_SECT_PREXPORT";
case 26: return "DOF_SECT_PRENOFFS";
default: return "<unknown>";
}
}
static void printDOFStringTabSec(void* dof, dof_sec_t* sec) {
size_t tab = sec->dofs_offset;
size_t limit = sec->dofs_size;
tty->print_cr("// String Table:");
for (size_t idx = 0; idx < limit; /*empty*/) {
char* str = ((char*)dof) + tab + idx;
tty->print_cr("// [0x%x + 0x%x] '%s'", tab, idx, str);
idx += strlen(str) + 1;
}
}
static void printDOFProviderSec(void* dof, dof_sec_t* sec) {
dof_provider_t* prov = (dof_provider_t*)((char*)dof + sec->dofs_offset);
tty->print_cr("// dof_provider_t {");
tty->print_cr("// dofpv_strtab = %d", prov->dofpv_strtab);
tty->print_cr("// dofpv_probes = %d", prov->dofpv_probes);
tty->print_cr("// dofpv_prargs = %d", prov->dofpv_prargs);
tty->print_cr("// dofpv_proffs = %d", prov->dofpv_proffs);
tty->print_cr("// dofpv_name = 0x%x", prov->dofpv_name);
tty->print_cr("// dofpv_provattr = 0x%08x", prov->dofpv_provattr);
tty->print_cr("// dofpv_modattr = 0x%08x", prov->dofpv_modattr);
tty->print_cr("// dofpv_funcattr = 0x%08x", prov->dofpv_funcattr);
tty->print_cr("// dofpv_nameattr = 0x%08x", prov->dofpv_nameattr);
tty->print_cr("// dofpv_argsattr = 0x%08x", prov->dofpv_argsattr);
tty->print_cr("// }");
}
static void printDOFProbesSec(void* dof, dof_sec_t* sec) {
size_t idx = sec->dofs_offset;
size_t limit = idx + sec->dofs_size;
for (size_t idx = sec->dofs_offset; idx < limit; idx += sec->dofs_entsize) {
dof_probe_t* prb = (dof_probe_t*)((char*)dof + idx);
tty->print_cr("// dof_probe_t {");
tty->print_cr("// dofpr_addr = 0x%016llx", prb->dofpr_addr);
tty->print_cr("// dofpr_func = 0x%x", prb->dofpr_func);
tty->print_cr("// dofpr_name = 0x%x", prb->dofpr_name);
tty->print_cr("// dofpr_nargv = 0x%x", prb->dofpr_nargv);
tty->print_cr("// dofpr_xargv = 0x%x", prb->dofpr_xargv);
tty->print_cr("// dofpr_argidx = 0x%x", prb->dofpr_argidx);
tty->print_cr("// dofpr_offidx = 0x%x", prb->dofpr_offidx);
tty->print_cr("// dofpr_nargc = %d", prb->dofpr_nargc);
tty->print_cr("// dofpr_xargc = %d", prb->dofpr_xargc);
tty->print_cr("// dofpr_noffs = %d", prb->dofpr_noffs);
tty->print_cr("// }");
}
}
static void printDOFOffsetsSec(void* dof, dof_sec_t* sec) {
size_t tab = sec->dofs_offset;
size_t limit = sec->dofs_size;
tty->print_cr("// Offsets:");
for (size_t idx = 0; idx < limit; idx += sec->dofs_entsize) {
uint32_t* off = (uint32_t*)((char*)dof + tab + idx);
tty->print_cr("// [0x%x + 0x%x]: %d", tab, idx, *off);
}
}
static void printDOFArgsSec(void* dof, dof_sec_t* sec) {
size_t tab = sec->dofs_offset;
size_t limit = sec->dofs_size;
tty->print_cr("// Arguments:");
for (size_t idx = 0; idx < limit; idx += sec->dofs_entsize) {
uint8_t* arg = (uint8_t*)((char*)dof + tab + idx);
tty->print_cr("// [0x%x + 0x%x]: %d", tab, idx, *arg);
}
}
static void printDOFSection(void* dof, dof_sec_t* sec) {
tty->print_cr("// dof_sec_t {");
tty->print_cr("// dofs_type = 0x%x /* %s */",
sec->dofs_type, dofSecTypeFor(sec->dofs_type));
tty->print_cr("// dofs_align = %d", sec->dofs_align);
tty->print_cr("// dofs_flags = 0x%x", sec->dofs_flags);
tty->print_cr("// dofs_entsize = %d", sec->dofs_entsize);
tty->print_cr("// dofs_offset = 0x%llx", sec->dofs_offset);
tty->print_cr("// dofs_size = %lld", sec->dofs_size);
tty->print_cr("// }");
switch (sec->dofs_type) {
case DOF_SECT_STRTAB: printDOFStringTabSec(dof, sec); break;
case DOF_SECT_PROVIDER: printDOFProviderSec(dof, sec); break;
case DOF_SECT_PROBES: printDOFProbesSec(dof, sec); break;
case DOF_SECT_PROFFS: printDOFOffsetsSec(dof, sec); break;
case DOF_SECT_PRARGS: printDOFArgsSec(dof, sec); break;
default: tty->print_cr("// <section type not recognized>");
}
}
static void printDOFHeader(dof_hdr_t* hdr) {
tty->print_cr("// dof_hdr_t {");
tty->print_cr("// dofh_ident[DOF_ID_MAG0] = 0x%x",
hdr->dofh_ident[DOF_ID_MAG0]);
tty->print_cr("// dofh_ident[DOF_ID_MAG1] = 0x%x",
hdr->dofh_ident[DOF_ID_MAG1]);
tty->print_cr("// dofh_ident[DOF_ID_MAG2] = 0x%x",
hdr->dofh_ident[DOF_ID_MAG2]);
tty->print_cr("// dofh_ident[DOF_ID_MAG3] = 0x%x",
hdr->dofh_ident[DOF_ID_MAG3]);
tty->print_cr("// dofh_ident[DOF_ID_MODEL] = 0x%x",
hdr->dofh_ident[DOF_ID_MODEL]);
tty->print_cr("// dofh_ident[DOF_ID_ENCODING] = 0x%x",
hdr->dofh_ident[DOF_ID_ENCODING]);
tty->print_cr("// dofh_ident[DOF_ID_VERSION] = 0x%x",
hdr->dofh_ident[DOF_ID_VERSION]);
tty->print_cr("// dofh_ident[DOF_ID_DIFVERS] = 0x%x",
hdr->dofh_ident[DOF_ID_DIFVERS]);
tty->print_cr("// dofh_flags = 0x%x", hdr->dofh_flags);
tty->print_cr("// dofh_hdrsize = %d", hdr->dofh_hdrsize);
tty->print_cr("// dofh_secsize = %d", hdr->dofh_secsize);
tty->print_cr("// dofh_secnum = %d", hdr->dofh_secnum);
tty->print_cr("// dofh_secoff = %lld", hdr->dofh_secoff);
tty->print_cr("// dofh_loadsz = %lld", hdr->dofh_loadsz);
tty->print_cr("// dofh_filesz = %lld", hdr->dofh_filesz);
tty->print_cr("// }");
}
static void printDOF(void* dof) {
dof_hdr_t* hdr = (dof_hdr_t*)dof;
printDOFHeader(hdr);
for (int i = 0; i < hdr->dofh_secnum; ++i) {
dof_sec_t* sec =
(dof_sec_t*)((char*)dof + sizeof(dof_hdr_t) + i * sizeof(dof_sec_t));
tty->print_cr("// [Section #%d]", i);
printDOFSection(dof, sec);
}
}
/**
* This prints out hex data in a 'windbg' or 'xxd' form, where each line is:
* <hex-address>: 8 * <hex-halfword> <ascii translation>
* example:
* 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000 .DOF............
* 0000010: 0000 0000 0000 0040 0000 0020 0000 0005 .......@... ....
* 0000020: 0000 0000 0000 0040 0000 0000 0000 015d .......@.......]
* ...
*/
static void printDOFRawData(void* dof) {
size_t size = ((dof_hdr_t*)dof)->dofh_loadsz;
size_t limit = (size + 16) / 16 * 16;
for (size_t i = 0; i < limit; ++i) {
if (i % 16 == 0) {
tty->print("%07x:", i);
}
if (i % 2 == 0) {
tty->print(" ");
}
if (i < size) {
tty->print("%02x", ((unsigned char*)dof)[i]);
} else {
tty->print(" ");
}
if ((i + 1) % 16 == 0) {
tty->print(" ");
for (size_t j = 0; j < 16; ++j) {
size_t idx = i + j - 15;
char c = ((char*)dof)[idx];
if (idx < size) {
tty->print("%c", c >= 32 && c <= 126 ? c : '.');
}
}
tty->print_cr("");
}
}
tty->print_cr("");
}
static void printDOFHelper(dof_helper_t* helper) {
tty->print_cr("// dof_helper_t {");
tty->print_cr("// dofhp_mod = \"%s\"", helper->dofhp_mod);
tty->print_cr("// dofhp_addr = 0x%016llx", helper->dofhp_addr);
tty->print_cr("// dofhp_dof = 0x%016llx", helper->dofhp_dof);
printDOF((void*)helper->dofhp_dof);
tty->print_cr("// }");
printDOFRawData((void*)helper->dofhp_dof);
}
#else // ndef HAVE_DTRACE_H
// Get here if we're not building on at least Solaris 10
int DTraceJSDT::pd_activate(
void* baseAddress, jstring module,
jint provider_count, JVM_DTraceProvider* providers) {
return -1;
}
void DTraceJSDT::pd_dispose(int handle) {
}
jboolean DTraceJSDT::pd_is_supported() {
return false;
}
#endif

39
hotspot/src/os/windows/vm/dtraceJSDT_windows.cpp Normal file
View File

@ -0,0 +1,39 @@
/*
* Copyright 1997-2007 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_dtraceJSDT_windows.cpp.incl"
int DTraceJSDT::pd_activate(
void* baseAddress, jstring module,
jint providers_count, JVM_DTraceProvider* providers) {
return -1;
}
void DTraceJSDT::pd_dispose(int handle) {
}
jboolean DTraceJSDT::pd_is_supported() {
return false;
}

1
hotspot/src/share/vm/asm/codeBuffer.hpp
View File

@ -36,6 +36,7 @@ public:
Verified_Entry, Verified_Entry,
Frame_Complete, // Offset in the code where the frame setup is (for forte stackwalks) is complete Frame_Complete, // Offset in the code where the frame setup is (for forte stackwalks) is complete
OSR_Entry, OSR_Entry,
Dtrace_trap = OSR_Entry, // dtrace probes can never have an OSR entry so reuse it
Exceptions, // Offset where exception handler lives Exceptions, // Offset where exception handler lives
Deopt, // Offset where deopt handler lives Deopt, // Offset where deopt handler lives
max_Entries }; max_Entries };

128
hotspot/src/share/vm/code/nmethod.cpp
View File

@ -27,7 +27,6 @@
#ifdef DTRACE_ENABLED #ifdef DTRACE_ENABLED
// Only bother with this argument setup if dtrace is available // Only bother with this argument setup if dtrace is available
HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load,
@ -438,7 +437,6 @@ nmethod* nmethod::new_native_nmethod(methodHandle method,
{ {
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod));
const int dummy = -1; // Flag to force proper "operator new"
CodeOffsets offsets; CodeOffsets offsets;
offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); offsets.set_value(CodeOffsets::Verified_Entry, vep_offset);
offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); offsets.set_value(CodeOffsets::Frame_Complete, frame_complete);
@ -461,6 +459,41 @@ nmethod* nmethod::new_native_nmethod(methodHandle method,
return nm; return nm;
} }
#ifdef HAVE_DTRACE_H
nmethod* nmethod::new_dtrace_nmethod(methodHandle method,
CodeBuffer *code_buffer,
int vep_offset,
int trap_offset,
int frame_complete,
int frame_size) {
// create nmethod
nmethod* nm = NULL;
{
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
int nmethod_size = allocation_size(code_buffer, sizeof(nmethod));
CodeOffsets offsets;
offsets.set_value(CodeOffsets::Verified_Entry, vep_offset);
offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset);
offsets.set_value(CodeOffsets::Frame_Complete, frame_complete);
nm = new (nmethod_size) nmethod(method(), nmethod_size, &offsets, code_buffer, frame_size);
NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm));
if (PrintAssembly && nm != NULL)
Disassembler::decode(nm);
}
// verify nmethod
debug_only(if (nm) nm->verify();) // might block
if (nm != NULL) {
nm->log_new_nmethod();
}
return nm;
}
#endif // def HAVE_DTRACE_H
nmethod* nmethod::new_nmethod(methodHandle method, nmethod* nmethod::new_nmethod(methodHandle method,
int compile_id, int compile_id,
int entry_bci, int entry_bci,
@ -558,6 +591,9 @@ nmethod::nmethod(
_exception_offset = 0; _exception_offset = 0;
_deoptimize_offset = 0; _deoptimize_offset = 0;
_orig_pc_offset = 0; _orig_pc_offset = 0;
#ifdef HAVE_DTRACE_H
_trap_offset = 0;
#endif // def HAVE_DTRACE_H
_stub_offset = data_offset(); _stub_offset = data_offset();
_consts_offset = data_offset(); _consts_offset = data_offset();
_scopes_data_offset = data_offset(); _scopes_data_offset = data_offset();
@ -615,6 +651,90 @@ nmethod::nmethod(
Events::log("Create nmethod " INTPTR_FORMAT, this); Events::log("Create nmethod " INTPTR_FORMAT, this);
} }
// For dtrace wrappers
#ifdef HAVE_DTRACE_H
nmethod::nmethod(
methodOop method,
int nmethod_size,
CodeOffsets* offsets,
CodeBuffer* code_buffer,
int frame_size)
: CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod),
nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL),
_compiled_synchronized_native_basic_lock_owner_sp_offset(in_ByteSize(-1)),
_compiled_synchronized_native_basic_lock_sp_offset(in_ByteSize(-1))
{
{
debug_only(No_Safepoint_Verifier nsv;)
assert_locked_or_safepoint(CodeCache_lock);
NOT_PRODUCT(_has_debug_info = false; )
_method = method;
_entry_bci = InvocationEntryBci;
_link = NULL;
_compiler = NULL;
// We have no exception handler or deopt handler make the
// values something that will never match a pc like the nmethod vtable entry
_exception_offset = 0;
_deoptimize_offset = 0;
_trap_offset = offsets->value(CodeOffsets::Dtrace_trap);
_orig_pc_offset = 0;
_stub_offset = data_offset();
_consts_offset = data_offset();
_scopes_data_offset = data_offset();
_scopes_pcs_offset = _scopes_data_offset;
_dependencies_offset = _scopes_pcs_offset;
_handler_table_offset = _dependencies_offset;
_nul_chk_table_offset = _handler_table_offset;
_nmethod_end_offset = _nul_chk_table_offset;
_compile_id = 0; // default
_comp_level = CompLevel_none;
_entry_point = instructions_begin();
_verified_entry_point = instructions_begin() + offsets->value(CodeOffsets::Verified_Entry);
_osr_entry_point = NULL;
_exception_cache = NULL;
_pc_desc_cache.reset_to(NULL);
flags.clear();
flags.state = alive;
_markedForDeoptimization = 0;
_lock_count = 0;
_stack_traversal_mark = 0;
code_buffer->copy_oops_to(this);
debug_only(check_store();)
CodeCache::commit(this);
VTune::create_nmethod(this);
}
if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) {
ttyLocker ttyl; // keep the following output all in one block
// This output goes directly to the tty, not the compiler log.
// To enable tools to match it up with the compilation activity,
// be sure to tag this tty output with the compile ID.
if (xtty != NULL) {
xtty->begin_head("print_dtrace_nmethod");
xtty->method(_method);
xtty->stamp();
xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this);
}
// print the header part first
print();
// then print the requested information
if (PrintNMethods) {
print_code();
}
if (PrintRelocations) {
print_relocations();
}
if (xtty != NULL) {
xtty->tail("print_dtrace_nmethod");
}
}
Events::log("Create nmethod " INTPTR_FORMAT, this);
}
#endif // def HAVE_DTRACE_H
void* nmethod::operator new(size_t size, int nmethod_size) { void* nmethod::operator new(size_t size, int nmethod_size) {
// Always leave some room in the CodeCache for I2C/C2I adapters // Always leave some room in the CodeCache for I2C/C2I adapters
@ -658,6 +778,9 @@ nmethod::nmethod(
_link = NULL; _link = NULL;
_compiler = compiler; _compiler = compiler;
_orig_pc_offset = orig_pc_offset; _orig_pc_offset = orig_pc_offset;
#ifdef HAVE_DTRACE_H
_trap_offset = 0;
#endif // def HAVE_DTRACE_H
_stub_offset = instructions_offset() + code_buffer->total_offset_of(code_buffer->stubs()->start()); _stub_offset = instructions_offset() + code_buffer->total_offset_of(code_buffer->stubs()->start());
// Exception handler and deopt handler are in the stub section // Exception handler and deopt handler are in the stub section
@ -1885,7 +2008,6 @@ void nmethod::print() const {
} else if (is_compiled_by_c2()) { } else if (is_compiled_by_c2()) {
tty->print("(c2) "); tty->print("(c2) ");
} else { } else {
assert(is_native_method(), "Who else?");
tty->print("(nm) "); tty->print("(nm) ");
} }

28
hotspot/src/share/vm/code/nmethod.hpp
View File

@ -140,6 +140,9 @@ class nmethod : public CodeBlob {
int _exception_offset; int _exception_offset;
// All deoptee's will resume execution at this location described by this offset // All deoptee's will resume execution at this location described by this offset
int _deoptimize_offset; int _deoptimize_offset;
#ifdef HAVE_DTRACE_H
int _trap_offset;
#endif // def HAVE_DTRACE_H
int _stub_offset; int _stub_offset;
int _consts_offset; int _consts_offset;
int _scopes_data_offset; int _scopes_data_offset;
@ -211,6 +214,15 @@ class nmethod : public CodeBlob {
ByteSize basic_lock_sp_offset, /* synchronized natives only */ ByteSize basic_lock_sp_offset, /* synchronized natives only */
OopMapSet* oop_maps); OopMapSet* oop_maps);
#ifdef HAVE_DTRACE_H
// For native wrappers
nmethod(methodOop method,
int nmethod_size,
CodeOffsets* offsets,
CodeBuffer *code_buffer,
int frame_size);
#endif // def HAVE_DTRACE_H
// Creation support // Creation support
nmethod(methodOop method, nmethod(methodOop method,
int nmethod_size, int nmethod_size,
@ -272,6 +284,22 @@ class nmethod : public CodeBlob {
ByteSize basic_lock_sp_offset, ByteSize basic_lock_sp_offset,
OopMapSet* oop_maps); OopMapSet* oop_maps);
#ifdef HAVE_DTRACE_H
// The method we generate for a dtrace probe has to look
// like an nmethod as far as the rest of the system is concerned
// which is somewhat unfortunate.
static nmethod* new_dtrace_nmethod(methodHandle method,
CodeBuffer *code_buffer,
int vep_offset,
int trap_offset,
int frame_complete,
int frame_size);
int trap_offset() const { return _trap_offset; }
address trap_address() const { return code_begin() + _trap_offset; }
#endif // def HAVE_DTRACE_H
// accessors // accessors
methodOop method() const { return _method; } methodOop method() const { return _method; }
AbstractCompiler* compiler() const { return _compiler; } AbstractCompiler* compiler() const { return _compiler; }

25
hotspot/src/share/vm/includeDB_core
View File

@ -1497,6 +1497,30 @@ dtraceAttacher.cpp resourceArea.hpp
dtraceAttacher.cpp vmThread.hpp dtraceAttacher.cpp vmThread.hpp
dtraceAttacher.cpp vm_operations.hpp dtraceAttacher.cpp vm_operations.hpp
dtraceJSDT.cpp allocation.hpp
dtraceJSDT.cpp codeBlob.hpp
dtraceJSDT.cpp dtraceJSDT.hpp
dtraceJSDT.cpp exceptions.hpp
dtraceJSDT.cpp globalDefinitions.hpp
dtraceJSDT.cpp javaClasses.hpp
dtraceJSDT.cpp jniHandles.hpp
dtraceJSDT.cpp jvm.h
dtraceJSDT.cpp os.hpp
dtraceJSDT.cpp utf8.hpp
dtraceJSDT.hpp nativeInst_<arch>.hpp
dtraceJSDT.hpp nmethod.hpp
dtraceJSDT_<os_family>.cpp allocation.hpp
dtraceJSDT_<os_family>.cpp codeBlob.hpp
dtraceJSDT_<os_family>.cpp dtraceJSDT.hpp
dtraceJSDT_<os_family>.cpp globalDefinitions.hpp
dtraceJSDT_<os_family>.cpp javaClasses.hpp
dtraceJSDT_<os_family>.cpp jniHandles.hpp
dtraceJSDT_<os_family>.cpp jvm.h
dtraceJSDT_<os_family>.cpp os.hpp
dtraceJSDT_<os_family>.cpp signature.hpp
// dump is jck optional, put cpp deps in includeDB_features // dump is jck optional, put cpp deps in includeDB_features
events.cpp allocation.inline.hpp events.cpp allocation.inline.hpp
@ -2400,6 +2424,7 @@ jvm.cpp classLoader.hpp
jvm.cpp collectedHeap.inline.hpp jvm.cpp collectedHeap.inline.hpp
jvm.cpp copy.hpp jvm.cpp copy.hpp
jvm.cpp defaultStream.hpp jvm.cpp defaultStream.hpp
jvm.cpp dtraceJSDT.hpp
jvm.cpp events.hpp jvm.cpp events.hpp
jvm.cpp handles.inline.hpp jvm.cpp handles.inline.hpp
jvm.cpp histogram.hpp jvm.cpp histogram.hpp

3
hotspot/src/share/vm/oops/methodOop.cpp
View File

@ -672,9 +672,6 @@ void methodOopDesc::link_method(methodHandle h_method, TRAPS) {
} }
address methodOopDesc::make_adapters(methodHandle mh, TRAPS) { address methodOopDesc::make_adapters(methodHandle mh, TRAPS) {
// If running -Xint we need no adapters.
if (Arguments::mode() == Arguments::_int) return NULL;
// Adapters for compiled code are made eagerly here. They are fairly // Adapters for compiled code are made eagerly here. They are fairly
// small (generally < 100 bytes) and quick to make (and cached and shared) // small (generally < 100 bytes) and quick to make (and cached and shared)
// so making them eagerly shouldn't be too expensive. // so making them eagerly shouldn't be too expensive.

31
hotspot/src/share/vm/prims/jvm.cpp
View File

@ -4168,6 +4168,36 @@ JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong o
return res == oldVal; return res == oldVal;
JVM_END JVM_END
// DTrace ///////////////////////////////////////////////////////////////////
JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env))
JVMWrapper("JVM_DTraceGetVersion");
return (jint)JVM_TRACING_DTRACE_VERSION;
JVM_END
JVM_ENTRY(jlong,JVM_DTraceActivate(
JNIEnv* env, jint version, jstring module_name, jint providers_count,
JVM_DTraceProvider* providers))
JVMWrapper("JVM_DTraceActivate");
return DTraceJSDT::activate(
version, module_name, providers_count, providers, CHECK_0);
JVM_END
JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method))
JVMWrapper("JVM_DTraceIsProbeEnabled");
return DTraceJSDT::is_probe_enabled(method);
JVM_END
JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle))
JVMWrapper("JVM_DTraceDispose");
DTraceJSDT::dispose(handle);
JVM_END
JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env))
JVMWrapper("JVM_DTraceIsSupported");
return DTraceJSDT::is_supported();
JVM_END
// Returns an array of all live Thread objects (VM internal JavaThreads, // Returns an array of all live Thread objects (VM internal JavaThreads,
// jvmti agent threads, and JNI attaching threads are skipped) // jvmti agent threads, and JNI attaching threads are skipped)
// See CR 6404306 regarding JNI attaching threads // See CR 6404306 regarding JNI attaching threads
@ -4496,3 +4526,4 @@ JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t i
#endif // KERNEL #endif // KERNEL
} }
JVM_END JVM_END

77
hotspot/src/share/vm/prims/jvm.h
View File

@ -606,6 +606,83 @@ JVM_SupportsCX8(void);
JNIEXPORT jboolean JNICALL JNIEXPORT jboolean JNICALL
JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal); JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fldID, jlong oldVal, jlong newVal);
/*
* com.sun.dtrace.jsdt support
*/
#define JVM_TRACING_DTRACE_VERSION 1
/*
* Structure to pass one probe description to JVM.
*
* The VM will overwrite the definition of the referenced method with
* code that will fire the probe.
*/
typedef struct {
jmethodID method;
jstring function;
jstring name;
void* reserved[4]; // for future use
} JVM_DTraceProbe;
/**
* Encapsulates the stability ratings for a DTrace provider field
*/
typedef struct {
jint nameStability;
jint dataStability;
jint dependencyClass;
} JVM_DTraceInterfaceAttributes;
/*
* Structure to pass one provider description to JVM
*/
typedef struct {
jstring name;
JVM_DTraceProbe* probes;
jint probe_count;
JVM_DTraceInterfaceAttributes providerAttributes;
JVM_DTraceInterfaceAttributes moduleAttributes;
JVM_DTraceInterfaceAttributes functionAttributes;
JVM_DTraceInterfaceAttributes nameAttributes;
JVM_DTraceInterfaceAttributes argsAttributes;
void* reserved[4]; // for future use
} JVM_DTraceProvider;
/*
* Get the version number the JVM was built with
*/
JNIEXPORT jint JNICALL
JVM_DTraceGetVersion(JNIEnv* env);
/*
* Register new probe with given signature, return global handle
*
* The version passed in is the version that the library code was
* built with.
*/
JNIEXPORT jlong JNICALL
JVM_DTraceActivate(JNIEnv* env, jint version, jstring module_name,
jint providers_count, JVM_DTraceProvider* providers);
/*
* Check JSDT probe
*/
JNIEXPORT jboolean JNICALL
JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method);
/*
* Destroy custom DOF
*/
JNIEXPORT void JNICALL
JVM_DTraceDispose(JNIEnv* env, jlong handle);
/*
* Check to see if DTrace is supported by OS
*/
JNIEXPORT jboolean JNICALL
JVM_DTraceIsSupported(JNIEnv* env);
/************************************************************************* /*************************************************************************
PART 2: Support for the Verifier and Class File Format Checker PART 2: Support for the Verifier and Class File Format Checker
************************************************************************/ ************************************************************************/

117
hotspot/src/share/vm/runtime/dtraceJSDT.cpp Normal file
View File

@ -0,0 +1,117 @@
/*
* Copyright 1997-2007 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_dtraceJSDT.cpp.incl"
#ifdef HAVE_DTRACE_H
jlong DTraceJSDT::activate(
jint version, jstring module_name, jint providers_count,
JVM_DTraceProvider* providers, TRAPS) {
size_t count = 0;
RegisteredProbes* probes = NULL;
if (!is_supported()) {
return 0;
}
assert(module_name != NULL, "valid module name");
assert(providers != NULL, "valid provider array");
for (int i = 0; i < providers_count; ++i) {
count += providers[i].probe_count;
}
probes = new RegisteredProbes(count);
count = 0;
for (int i = 0; i < providers_count; ++i) {
assert(providers[i].name != NULL, "valid provider name");
assert(providers[i].probe_count == 0 || providers[i].probes != NULL,
"valid probe count");
for (int j = 0; j < providers[i].probe_count; ++j) {
JVM_DTraceProbe* probe = &(providers[i].probes[j]);
assert(probe != NULL, "valid probe");
assert(probe->method != NULL, "valid method");
assert(probe->name != NULL, "valid probe name");
assert(probe->function != NULL, "valid probe function spec");
methodHandle h_method =
methodHandle(THREAD, JNIHandles::resolve_jmethod_id(probe->method));
nmethod* nm = AdapterHandlerLibrary::create_dtrace_nmethod(h_method);
h_method()->set_not_compilable(CompLevel_highest_tier);
h_method()->set_code(h_method, nm);
probes->nmethod_at_put(count++, nm);
}
}
int handle = pd_activate((void*)probes,
module_name, providers_count, providers);
if (handle <= 0) {
delete probes;
THROW_MSG_0(vmSymbols::java_lang_RuntimeException(),
"Unable to register DTrace probes (internal error).");
}
probes->set_helper_handle(handle);
return RegisteredProbes::toOpaqueProbes(probes);
}
jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
methodOop m = JNIHandles::resolve_jmethod_id(method);
return nativeInstruction_at(m->code()->trap_address())->is_dtrace_trap();
}
void DTraceJSDT::dispose(OpaqueProbes probes) {
RegisteredProbes* p = RegisteredProbes::toRegisteredProbes(probes);
if (probes != -1 && p != NULL) {
pd_dispose(p->helper_handle());
delete p;
}
}
jboolean DTraceJSDT::is_supported() {
return pd_is_supported();
}
#else // HAVE_DTRACE_H
jlong DTraceJSDT::activate(
jint version, jstring module_name, jint providers_count,
JVM_DTraceProvider* providers, TRAPS) {
return 0;
}
jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
return false;
}
void DTraceJSDT::dispose(OpaqueProbes probes) {
return;
}
jboolean DTraceJSDT::is_supported() {
return false;
}
#endif // ndef HAVE_DTRACE_H

89
hotspot/src/share/vm/runtime/dtraceJSDT.hpp Normal file
View File

@ -0,0 +1,89 @@
/*
* Copyright 1997-2007 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
class RegisteredProbes;
typedef jlong OpaqueProbes;
class DTraceJSDT : AllStatic {
private:
static int pd_activate(void* moduleBaseAddress, jstring module,
jint providers_count, JVM_DTraceProvider* providers);
static void pd_dispose(int handle);
static jboolean pd_is_supported();
public:
static OpaqueProbes activate(
jint version, jstring module_name, jint providers_count,
JVM_DTraceProvider* providers, TRAPS);
static jboolean is_probe_enabled(jmethodID method);
static void dispose(OpaqueProbes handle);
static jboolean is_supported();
};
class RegisteredProbes : public CHeapObj {
private:
nmethod** _nmethods; // all the probe methods
size_t _count; // number of probe methods
int _helper_handle; // DTrace-assigned identifier
public:
RegisteredProbes(size_t count) {
_count = count;
_nmethods = NEW_C_HEAP_ARRAY(nmethod*, count);
}
~RegisteredProbes() {
for (size_t i = 0; i < _count; ++i) {
// Let the sweeper reclaim it
_nmethods[i]->make_not_entrant();
_nmethods[i]->method()->clear_code();
}
FREE_C_HEAP_ARRAY(nmethod*, _nmethods);
_nmethods = NULL;
_count = 0;
}
static RegisteredProbes* toRegisteredProbes(OpaqueProbes p) {
return (RegisteredProbes*)(intptr_t)p;
}
static OpaqueProbes toOpaqueProbes(RegisteredProbes* p) {
return (OpaqueProbes)(intptr_t)p;
}
void set_helper_handle(int handle) { _helper_handle = handle; }
int helper_handle() const { return _helper_handle; }
nmethod* nmethod_at(size_t i) {
assert(i >= 0 && i < _count, "bad nmethod index");
return _nmethods[i];
}
void nmethod_at_put(size_t i, nmethod* nm) {
assert(i >= 0 && i < _count, "bad nmethod index");
_nmethods[i] = nm;
}
};

3
hotspot/src/share/vm/runtime/globals.hpp
View File

@ -3188,6 +3188,9 @@ class CommandLineFlags {
product(bool, RelaxAccessControlCheck, false, \ product(bool, RelaxAccessControlCheck, false, \
"Relax the access control checks in the verifier") \ "Relax the access control checks in the verifier") \
\ \
diagnostic(bool, PrintDTraceDOF, false, \
"Print the DTrace DOF passed to the system for JSDT probes") \
\
product(bool, UseVMInterruptibleIO, true, \ product(bool, UseVMInterruptibleIO, true, \
"(Unstable, Solaris-specific) Thread interrupt before or with " \ "(Unstable, Solaris-specific) Thread interrupt before or with " \
"EINTR for I/O operations results in OS_INTRPT") "EINTR for I/O operations results in OS_INTRPT")

63
hotspot/src/share/vm/runtime/sharedRuntime.cpp
View File

@ -1748,11 +1748,6 @@ int AdapterHandlerLibrary::get_create_adapter_index(methodHandle method) {
// _fingerprints array (it is not safe for concurrent readers and a single // _fingerprints array (it is not safe for concurrent readers and a single
// writer: this can be fixed if it becomes a problem). // writer: this can be fixed if it becomes a problem).
// Shouldn't be here if running -Xint
if (Arguments::mode() == Arguments::_int) {
ShouldNotReachHere();
}
// Get the address of the ic_miss handlers before we grab the // Get the address of the ic_miss handlers before we grab the
// AdapterHandlerLibrary_lock. This fixes bug 6236259 which // AdapterHandlerLibrary_lock. This fixes bug 6236259 which
// was caused by the initialization of the stubs happening // was caused by the initialization of the stubs happening
@ -1997,6 +1992,64 @@ nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method) {
return nm; return nm;
} }
#ifdef HAVE_DTRACE_H
// Create a dtrace nmethod for this method. The wrapper converts the
// java compiled calling convention to the native convention, makes a dummy call
// (actually nops for the size of the call instruction, which become a trap if
// probe is enabled). The returns to the caller. Since this all looks like a
// leaf no thread transition is needed.
nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) {
ResourceMark rm;
nmethod* nm = NULL;
if (PrintCompilation) {
ttyLocker ttyl;
tty->print("--- n%s ");
method->print_short_name(tty);
if (method->is_static()) {
tty->print(" (static)");
}
tty->cr();
}
{
// perform the work while holding the lock, but perform any printing
// outside the lock
MutexLocker mu(AdapterHandlerLibrary_lock);
// See if somebody beat us to it
nm = method->code();
if (nm) {
return nm;
}
// Improve alignment slightly
u_char* buf = (u_char*)
(((intptr_t)_buffer + CodeEntryAlignment-1) & ~(CodeEntryAlignment-1));
CodeBuffer buffer(buf, AdapterHandlerLibrary_size);
// Need a few relocation entries
double locs_buf[20];
buffer.insts()->initialize_shared_locs(
(relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo));
MacroAssembler _masm(&buffer);
// Generate the compiled-to-native wrapper code
nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method);
}
return nm;
}
// the dtrace method needs to convert java lang string to utf8 string.
void SharedRuntime::get_utf(oopDesc* src, address dst) {
typeArrayOop jlsValue = java_lang_String::value(src);
int jlsOffset = java_lang_String::offset(src);
int jlsLen = java_lang_String::length(src);
jchar* jlsPos = (jlsLen == 0) ? NULL :
jlsValue->char_at_addr(jlsOffset);
(void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size);
}
#endif // ndef HAVE_DTRACE_H
// ------------------------------------------------------------------------- // -------------------------------------------------------------------------
// Java-Java calling convention // Java-Java calling convention
// (what you use when Java calls Java) // (what you use when Java calls Java)

55
hotspot/src/share/vm/runtime/sharedRuntime.hpp
View File

@ -59,6 +59,10 @@ class SharedRuntime: AllStatic {
#endif // !PRODUCT #endif // !PRODUCT
public: public:
// max bytes for each dtrace string parameter
enum { max_dtrace_string_size = 256 };
// The following arithmetic routines are used on platforms that do // The following arithmetic routines are used on platforms that do
// not have machine instructions to implement their functionality. // not have machine instructions to implement their functionality.
// Do not remove these. // Do not remove these.
@ -258,9 +262,6 @@ class SharedRuntime: AllStatic {
public: public:
static void create_native_wrapper (JavaThread* thread, methodOop method);
// Read the array of BasicTypes from a Java signature, and compute where // Read the array of BasicTypes from a Java signature, and compute where
// compiled Java code would like to put the results. Values in reg_lo and // compiled Java code would like to put the results. Values in reg_lo and
// reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are
@ -354,6 +355,19 @@ class SharedRuntime: AllStatic {
VMRegPair *regs, VMRegPair *regs,
BasicType ret_type ); BasicType ret_type );
#ifdef HAVE_DTRACE_H
// Generate a dtrace wrapper for a given method. The method takes arguments
// in the Java compiled code convention, marshals them to the native
// convention (handlizes oops, etc), transitions to native, makes the call,
// returns to java state (possibly blocking), unhandlizes any result and
// returns.
static nmethod *generate_dtrace_nmethod(MacroAssembler* masm,
methodHandle method);
// dtrace support to convert a Java string to utf8
static void get_utf(oopDesc* src, address dst);
#endif // def HAVE_DTRACE_H
// A compiled caller has just called the interpreter, but compiled code // A compiled caller has just called the interpreter, but compiled code
// exists. Patch the caller so he no longer calls into the interpreter. // exists. Patch the caller so he no longer calls into the interpreter.
static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc); static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc);
@ -492,42 +506,55 @@ class AdapterHandlerEntry : public CHeapObj {
address _c2i_unverified_entry; address _c2i_unverified_entry;
public: public:
// The name we give all buffer blobs
static const char* name;
AdapterHandlerEntry(address i2c_entry, address c2i_entry, address c2i_unverified_entry): AdapterHandlerEntry(address i2c_entry, address c2i_entry, address c2i_unverified_entry):
_i2c_entry(i2c_entry), _i2c_entry(i2c_entry),
_c2i_entry(c2i_entry), _c2i_entry(c2i_entry),
_c2i_unverified_entry(c2i_unverified_entry) { _c2i_unverified_entry(c2i_unverified_entry) {
} }
// The name we give all buffer blobs
static const char* name;
address get_i2c_entry() { return _i2c_entry; } address get_i2c_entry() { return _i2c_entry; }
address get_c2i_entry() { return _c2i_entry; } address get_c2i_entry() { return _c2i_entry; }
address get_c2i_unverified_entry() { return _c2i_unverified_entry; } address get_c2i_unverified_entry() { return _c2i_unverified_entry; }
void relocate(address new_base); void relocate(address new_base);
#ifndef PRODUCT #ifndef PRODUCT
void print(); void print();
#endif /* PRODUCT */ #endif /* PRODUCT */
}; };
class AdapterHandlerLibrary: public AllStatic { class AdapterHandlerLibrary: public AllStatic {
private: private:
static u_char _buffer[]; // the temporary code buffer
static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
static GrowableArray<AdapterHandlerEntry*> * _handlers; // the corresponding handlers
enum { enum {
AbstractMethodHandler = 1 // special handler for abstract methods AbstractMethodHandler = 1 // special handler for abstract methods
}; };
static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
static GrowableArray<AdapterHandlerEntry*> * _handlers; // the corresponding handlers
static u_char _buffer[]; // the temporary code buffer
static void initialize(); static void initialize();
static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); }
static int get_create_adapter_index(methodHandle method); static int get_create_adapter_index(methodHandle method);
static address get_i2c_entry( int index ) { return get_entry(index)->get_i2c_entry(); } static address get_i2c_entry( int index ) {
static address get_c2i_entry( int index ) { return get_entry(index)->get_c2i_entry(); } return get_entry(index)->get_i2c_entry();
static address get_c2i_unverified_entry( int index ) { return get_entry(index)->get_c2i_unverified_entry(); } }
static address get_c2i_entry( int index ) {
return get_entry(index)->get_c2i_entry();
}
static address get_c2i_unverified_entry( int index ) {
return get_entry(index)->get_c2i_unverified_entry();
}
public: public:
static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); }
static nmethod* create_native_wrapper(methodHandle method); static nmethod* create_native_wrapper(methodHandle method);
static AdapterHandlerEntry* get_adapter(methodHandle method) { return get_entry(get_create_adapter_index(method)); } static AdapterHandlerEntry* get_adapter(methodHandle method) {
return get_entry(get_create_adapter_index(method));
}
#ifdef HAVE_DTRACE_H
static nmethod* create_dtrace_nmethod (methodHandle method);
#endif // HAVE_DTRACE_H
#ifndef PRODUCT #ifndef PRODUCT
static void print_handler(CodeBlob* b); static void print_handler(CodeBlob* b);