-/* src/vm/jit/stacktrace.c - machine independet stacktrace system
+/* src/vm/jit/stacktrace.c - machine independent stacktrace system
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
+ Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
J. Wenninger, Institut f. Computersprachen - TU Wien
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Joseph Wenninger
-
- Changes: Christian Thalinger
- Edwin Steiner
-
- $Id: stacktrace.c 4962 2006-05-26 12:26:41Z edwin $
-
*/
#include "config.h"
#include <assert.h>
+#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "vm/types.h"
-#include "mm/boehm.h"
+#include "mm/gc-common.h"
#include "mm/memory.h"
-#include "native/native.h"
+
+#include "vm/jit/stacktrace.h"
#include "vm/global.h" /* required here for native includes */
-#include "native/include/java_lang_ClassLoader.h"
+#include "native/jni.h"
+#include "native/llni.h"
#include "native/include/java_lang_Throwable.h"
-#include "native/include/java_lang_VMThrowable.h"
+
+#if defined(WITH_CLASSPATH_GNU)
+# include "native/include/java_lang_VMThrowable.h"
+#endif
#if defined(ENABLE_THREADS)
# include "threads/native/threads.h"
#endif
#include "toolbox/logging.h"
+
+#include "vm/array.h"
#include "vm/builtin.h"
-#include "vm/class.h"
+#include "vm/cycles-stats.h"
#include "vm/exceptions.h"
-#include "vm/loader.h"
-#include "vm/options.h"
#include "vm/stringlocal.h"
#include "vm/vm.h"
+
#include "vm/jit/asmpart.h"
#include "vm/jit/codegen-common.h"
#include "vm/jit/methodheader.h"
-#include "vm/cycles-stats.h"
-
-
-/* linenumbertable_entry ******************************************************/
-/* Keep the type of line the same as the pointer type, otherwise we
- run into alignment troubles (like on MIPS64). */
+#include "vmcore/class.h"
+#include "vmcore/loader.h"
+#include "vmcore/options.h"
-typedef struct linenumbertable_entry linenumbertable_entry;
-
-struct linenumbertable_entry {
- ptrint line; /* NOTE: see doc/inlining_stacktrace.txt for */
- u1 *pc; /* special meanings of line and pc. */
-};
/* global variables ***********************************************************/
-
#if !defined(ENABLE_THREADS)
-stackframeinfo *_no_threads_stackframeinfo = NULL;
+stackframeinfo_t *_no_threads_stackframeinfo = NULL;
#endif
CYCLES_STATS_DECLARE(stacktrace_overhead ,100,1)
CYCLES_STATS_DECLARE(stacktrace_getStack ,40,10000)
-/* stacktrace_create_stackframeinfo ********************************************
+/* stacktrace_stackframeinfo_add ***********************************************
- Creates an stackframe info structure for inline code in the
- interpreter.
+ Fills a stackframe info structure with the given or calculated
+ values and adds it to the chain.
*******************************************************************************/
-#if defined(ENABLE_INTRP)
-void stacktrace_create_stackframeinfo(stackframeinfo *sfi, u1 *pv, u1 *sp,
- u1 *ra)
+void stacktrace_stackframeinfo_add(stackframeinfo_t *sfi, u1 *pv, u1 *sp, u1 *ra, u1 *xpc)
{
- stackframeinfo **psfi;
- methodinfo *m;
-
- /* get current stackframe info pointer */
-
- psfi = STACKFRAMEINFO;
-
- /* if we don't have pv handy */
-
- if (pv == NULL) {
-#if defined(ENABLE_INTRP)
- if (opt_intrp)
- pv = codegen_findmethod(ra);
- else
+ stackframeinfo_t **psfi;
+ codeinfo *code;
+#if !defined(__I386__) && !defined(__X86_64__) && !defined(__S390__) && !defined(__M68K__)
+ bool isleafmethod;
#endif
- {
#if defined(ENABLE_JIT)
- pv = md_codegen_findmethod(ra);
+ s4 framesize;
#endif
- }
- }
-
- /* get methodinfo pointer from data segment */
-
- m = *((methodinfo **) (pv + MethodPointer));
-
- /* fill new stackframe info structure */
-
- sfi->prev = *psfi;
- sfi->method = m;
- sfi->pv = pv;
- sfi->sp = sp;
- sfi->ra = ra;
-
- /* xpc is the same as ra, but is required in stacktrace_create */
-
- sfi->xpc = ra;
-
- /* store new stackframe info pointer */
-
- *psfi = sfi;
-}
-#endif /* defined(ENABLE_INTRP) */
-
-
-/* stacktrace_create_inline_stackframeinfo *************************************
-
- Creates an stackframe info structure for an inline exception stub.
-
-*******************************************************************************/
-
-void stacktrace_create_inline_stackframeinfo(stackframeinfo *sfi, u1 *pv,
- u1 *sp, u1 *ra, u1 *xpc)
-{
- stackframeinfo **psfi;
/* get current stackframe info pointer */
- psfi = STACKFRAMEINFO;
-
-#if defined(ENABLE_INTRP)
- if (opt_intrp) {
- /* if we don't have pv handy */
-
- if (pv == NULL)
- pv = codegen_findmethod(ra);
-
- }
-#endif
-
- /* fill new stackframe info structure */
-
- sfi->prev = *psfi;
- sfi->method = NULL;
- sfi->pv = pv;
- sfi->sp = sp;
- sfi->ra = ra;
- sfi->xpc = xpc;
-
- /* store new stackframe info pointer */
-
- *psfi = sfi;
-}
-
-
-/* stacktrace_create_extern_stackframeinfo *************************************
-
- Creates an stackframe info structure for an extern exception
- (hardware or assembler).
-
-*******************************************************************************/
-
-void stacktrace_create_extern_stackframeinfo(stackframeinfo *sfi, u1 *pv,
- u1 *sp, u1 *ra, u1 *xpc)
-{
- stackframeinfo **psfi;
-#if !defined(__I386__) && !defined(__X86_64__)
- bool isleafmethod;
-#endif
-#if defined(ENABLE_JIT)
- s4 framesize;
-#endif
-
- /* get current stackframe info pointer */
-
- psfi = STACKFRAMEINFO;
+ psfi = &STACKFRAMEINFO;
/* sometimes we don't have pv handy (e.g. in asmpart.S:
L_asm_call_jit_compiler_exception or in the interpreter). */
if (pv == NULL) {
#if defined(ENABLE_INTRP)
if (opt_intrp)
- pv = codegen_findmethod(ra);
+ pv = codegen_get_pv_from_pc(ra);
else
#endif
{
#if defined(ENABLE_JIT)
- pv = md_codegen_findmethod(ra);
+# if defined(__SPARC_64__)
+ pv = md_get_pv_from_stackframe(sp);
+# else
+ pv = md_codegen_get_pv_from_pc(ra);
+# endif
#endif
}
}
+ /* Get codeinfo pointer for the parent Java method. */
+
+ code = code_get_codeinfo_for_pv(pv);
+
+ /* XXX */
+/* assert(m != NULL); */
+
#if defined(ENABLE_JIT)
# if defined(ENABLE_INTRP)
/* When using the interpreter, we pass RA to the function. */
if (!opt_intrp) {
# endif
-# if defined(__I386__) || defined(__X86_64__)
+# if defined(__I386__) || defined(__X86_64__) || defined(__S390__) || defined(__M68K__)
/* On i386 and x86_64 we always have to get the return address
from the stack. */
+ /* m68k has return address on stack always */
+ /* On S390 we use REG_RA as REG_ITMP3, so we have always to get
+ the RA from stack. */
framesize = *((u4 *) (pv + FrameSize));
# if defined(ENABLE_INTRP)
}
# endif
-#endif /* defined(ENABLE_JIT) */
-
- /* fill new stackframe info structure */
-
- sfi->prev = *psfi;
- sfi->method = NULL;
- sfi->pv = pv;
- sfi->sp = sp;
- sfi->ra = ra;
- sfi->xpc = xpc;
-
- /* store new stackframe info pointer */
-
- *psfi = sfi;
-}
-
-
-/* stacktrace_create_native_stackframeinfo *************************************
-
- Creates a stackframe info structure for a native stub.
-
-*******************************************************************************/
-
-void stacktrace_create_native_stackframeinfo(stackframeinfo *sfi, u1 *pv,
- u1 *sp, u1 *ra)
-{
- stackframeinfo **psfi;
- methodinfo *m;
-
- /* get methodinfo pointer from data segment */
-
- m = *((methodinfo **) (pv + MethodPointer));
-
- /* get current stackframe info pointer */
+#endif
- psfi = STACKFRAMEINFO;
+ /* Calculate XPC when not given. The XPC is then the return
+ address of the current method minus 1 because the RA points to
+ the instruction after the call instruction. This is required
+ e.g. for method stubs. */
- /* fill new stackframe info structure */
+ if (xpc == NULL) {
+ xpc = (void *) (((intptr_t) ra) - 1);
+ }
- sfi->prev = *psfi;
- sfi->method = m;
- sfi->pv = NULL;
- sfi->sp = sp;
- sfi->ra = ra;
- sfi->xpc = NULL;
+ /* Fill new stackframeinfo structure. */
+
+ sfi->prev = *psfi;
+ sfi->code = code;
+ sfi->pv = pv;
+ sfi->sp = sp;
+ sfi->ra = ra;
+ sfi->xpc = xpc;
+
+#if !defined(NDEBUG)
+ if (opt_DebugStackFrameInfo) {
+ log_start();
+ log_print("[stackframeinfo add : sfi=%p, method=%p, pv=%p, sp=%p, ra=%p, xpc=%p, method=",
+ sfi, sfi->code->m, sfi->pv, sfi->sp, sfi->ra, sfi->xpc);
+ method_print(sfi->code->m);
+ log_print("]");
+ log_finish();
+ }
+#endif
- /* store new stackframe info pointer */
+ /* Store new stackframeinfo pointer. */
*psfi = sfi;
-}
-
-
-/* stacktrace_remove_stackframeinfo ********************************************
-
- Remove the topmost stackframeinfo in the current thread.
-
-*******************************************************************************/
-
-void stacktrace_remove_stackframeinfo(stackframeinfo *sfi)
-{
- stackframeinfo **psfi;
-
- /* get current stackframe info pointer */
-
- psfi = STACKFRAMEINFO;
-
- /* restore the old pointer */
-
- *psfi = sfi->prev;
-}
-
-
-/* stacktrace_inline_arithmeticexception ***************************************
-
- Creates an ArithemticException for inline stub.
-
-*******************************************************************************/
-
-java_objectheader *stacktrace_inline_arithmeticexception(u1 *pv, u1 *sp,
- u1 *ra, u1 *xpc)
-{
- stackframeinfo sfi;
- java_objectheader *o;
-
- /* create stackframeinfo */
-
- stacktrace_create_inline_stackframeinfo(&sfi, pv, sp, ra, xpc);
-
- /* create exception */
-
- o = new_arithmeticexception();
-
- /* remove stackframeinfo */
-
- stacktrace_remove_stackframeinfo(&sfi);
-
- return o;
-}
-
-
-/* stacktrace_inline_arrayindexoutofboundsexception ****************************
-
- Creates an ArrayIndexOutOfBoundsException for inline stub.
-
-*******************************************************************************/
-
-java_objectheader *stacktrace_inline_arrayindexoutofboundsexception(u1 *pv,
- u1 *sp,
- u1 *ra,
- u1 *xpc,
- s4 index)
-{
- stackframeinfo sfi;
- java_objectheader *o;
-
- /* create stackframeinfo */
-
- stacktrace_create_inline_stackframeinfo(&sfi, pv, sp, ra, xpc);
-
- /* create exception */
-
- o = new_arrayindexoutofboundsexception(index);
-
- /* remove stackframeinfo */
-
- stacktrace_remove_stackframeinfo(&sfi);
-
- return o;
-}
-
-
-/* stacktrace_inline_arraystoreexception ***************************************
-
- Creates an ArrayStoreException for inline stub.
-
-*******************************************************************************/
-
-java_objectheader *stacktrace_inline_arraystoreexception(u1 *pv, u1 *sp, u1 *ra,
- u1 *xpc)
-{
- stackframeinfo sfi;
- java_objectheader *o;
-
- /* create stackframeinfo */
-
- stacktrace_create_inline_stackframeinfo(&sfi, pv, sp, ra, xpc);
-
- /* create exception */
-
- o = new_arraystoreexception();
-
- /* remove stackframeinfo */
-
- stacktrace_remove_stackframeinfo(&sfi);
-
- return o;
-}
-
-
-/* stacktrace_inline_classcastexception ****************************************
-
- Creates an ClassCastException for inline stub.
-
-*******************************************************************************/
-
-java_objectheader *stacktrace_inline_classcastexception(u1 *pv, u1 *sp, u1 *ra,
- u1 *xpc)
-{
- stackframeinfo sfi;
- java_objectheader *o;
-
- /* create stackframeinfo */
-
- stacktrace_create_inline_stackframeinfo(&sfi, pv, sp, ra, xpc);
-
- /* create exception */
-
- o = new_classcastexception();
-
- /* remove stackframeinfo */
-
- stacktrace_remove_stackframeinfo(&sfi);
-
- return o;
-}
-
-
-/* stacktrace_inline_nullpointerexception **************************************
-
- Creates an NullPointerException for inline stub.
-
-*******************************************************************************/
-
-java_objectheader *stacktrace_inline_nullpointerexception(u1 *pv, u1 *sp,
- u1 *ra, u1 *xpc)
-{
- stackframeinfo sfi;
- java_objectheader *o;
-
- /* create stackframeinfo */
-
- stacktrace_create_inline_stackframeinfo(&sfi, pv, sp, ra, xpc);
-
- /* create exception */
-
- o = new_nullpointerexception();
-
- /* remove stackframeinfo */
-
- stacktrace_remove_stackframeinfo(&sfi);
-
- return o;
-}
-
-
-/* stacktrace_inline_fillInStackTrace ******************************************
-
- Fills in the correct stacktrace into an existing exception object
- (this one is for inline exception stubs).
-
-*******************************************************************************/
-
-java_objectheader *stacktrace_inline_fillInStackTrace(u1 *pv, u1 *sp, u1 *ra,
- u1 *xpc)
-{
- stackframeinfo sfi;
- java_objectheader *o;
- methodinfo *m;
-
- /* create stackframeinfo */
-
- stacktrace_create_inline_stackframeinfo(&sfi, pv, sp, ra, xpc);
-
- /* get exception */
-
- o = *exceptionptr;
- assert(o);
-
- /* clear exception */
-
- *exceptionptr = NULL;
- /* resolve methodinfo pointer from exception object */
+ /* set the native world flag for the current thread */
+ /* ATTENTION: This flag tells the GC how to treat this thread in case of
+ a collection. Set this flag _after_ a valid stackframe info was set. */
- m = class_resolvemethod(o->vftbl->class,
- utf_fillInStackTrace,
- utf_void__java_lang_Throwable);
-
- /* call function */
-
- (void) vm_call_method(m, o);
-
- /* remove stackframeinfo */
-
- stacktrace_remove_stackframeinfo(&sfi);
-
- return o;
-}
-
-
-/* stacktrace_hardware_arithmeticexception *************************************
-
- Creates an ArithemticException for inline stub.
-
-*******************************************************************************/
-
-java_objectheader *stacktrace_hardware_arithmeticexception(u1 *pv, u1 *sp,
- u1 *ra, u1 *xpc)
-{
- stackframeinfo sfi;
- java_objectheader *o;
-
- /* create stackframeinfo */
-
- stacktrace_create_extern_stackframeinfo(&sfi, pv, sp, ra, xpc);
-
- /* create exception */
-
- o = new_arithmeticexception();
-
- /* remove stackframeinfo */
-
- stacktrace_remove_stackframeinfo(&sfi);
-
- return o;
+ THREAD_NATIVEWORLD_ENTER;
}
-/* stacktrace_hardware_nullpointerexception ************************************
+/* stacktrace_stackframeinfo_remove ********************************************
- Creates an NullPointerException for the SIGSEGV signal handler.
+ Remove the given stackframeinfo from the chain in the current
+ thread.
*******************************************************************************/
-java_objectheader *stacktrace_hardware_nullpointerexception(u1 *pv, u1 *sp,
- u1 *ra, u1 *xpc)
+void stacktrace_stackframeinfo_remove(stackframeinfo_t *sfi)
{
- stackframeinfo sfi;
- java_objectheader *o;
+ stackframeinfo_t **psfi;
- /* create stackframeinfo */
+ /* clear the native world flag for the current thread */
+ /* ATTENTION: Clear this flag _before_ removing the stackframe info */
- stacktrace_create_extern_stackframeinfo(&sfi, pv, sp, ra, xpc);
+ THREAD_NATIVEWORLD_EXIT;
- /* create exception */
+ /* get current stackframe info pointer */
- o = new_nullpointerexception();
+ psfi = &STACKFRAMEINFO;
- /* remove stackframeinfo */
+#if !defined(NDEBUG)
+ if (opt_DebugStackFrameInfo) {
+ log_start();
+ log_print("[stackframeinfo remove: sfi=%p, method=%p, pv=%p, sp=%p, ra=%p, xpc=%p, method=",
+ sfi, sfi->code->m, sfi->pv, sfi->sp, sfi->ra, sfi->xpc);
+ method_print(sfi->code->m);
+ log_print("]");
+ log_finish();
+ }
+#endif
- stacktrace_remove_stackframeinfo(&sfi);
+ /* restore the old pointer */
- return o;
+ *psfi = sfi->prev;
}
-/* stacktrace_add_entry ********************************************************
+/* stacktrace_entry_add ********************************************************
Adds a new entry to the stacktrace buffer.
*******************************************************************************/
-static void stacktrace_add_entry(stacktracebuffer *stb, methodinfo *m, u2 line)
+static inline stacktracebuffer *stacktrace_entry_add(stacktracebuffer *stb, methodinfo *m, u2 line)
{
stacktrace_entry *ste;
+ u4 stb_size_old;
+ u4 stb_size_new;
/* check if we already reached the buffer capacity */
if (stb->used >= stb->capacity) {
+ /* calculate size of stacktracebuffer */
+
+ stb_size_old = sizeof(stacktracebuffer) +
+ sizeof(stacktrace_entry) * stb->capacity -
+ sizeof(stacktrace_entry) * STACKTRACE_CAPACITY_DEFAULT;
+
+ stb_size_new = stb_size_old +
+ sizeof(stacktrace_entry) * STACKTRACE_CAPACITY_INCREMENT;
+
/* reallocate new memory */
- stb->entries = DMREALLOC(stb->entries, stacktrace_entry, stb->capacity,
- stb->capacity + STACKTRACE_CAPACITY_INCREMENT);
+ stb = DMREALLOC(stb, u1, stb_size_old, stb_size_new);
/* set new buffer capacity */
/* increase entries used count */
stb->used += 1;
-}
-
-/* stacktrace_add_method_intern ************************************************
-
- This function is used by stacktrace_add_method to search the line number
- table for the line corresponding to a given pc. The function recurses for
- inlined methods.
-
-*******************************************************************************/
-
-static bool stacktrace_add_method_intern(stacktracebuffer *stb,
- methodinfo *m,
- linenumbertable_entry *lntentry,
- ptrint lntsize,
- u1 *pc)
-{
- linenumbertable_entry *lntinline; /* special entry for inlined method */
-
- assert(stb);
- assert(lntentry);
-
- /* Find the line number for the specified PC (going backwards
- in the linenumber table). The linenumber table size is zero
- in native stubs. */
-
- for (; lntsize > 0; lntsize--, lntentry--) {
-
- /* did we reach the current line? */
-
- /* Note: In case of inlining this may actually compare the pc
- against a methodinfo *, yielding a non-sensical
- result. This is no problem, however, as we ignore such
- entries in the switch below. This way we optimize for the
- common case (ie. a real pc in lntentry->pc). */
-
- if (pc >= lntentry->pc) {
-
- /* check for special inline entries (see
- doc/inlining_stacktrace.txt for details */
-
- if ((s4)lntentry->line < 0) {
- switch (lntentry->line) {
- case -1:
- /* begin of inlined method (ie. INLINE_END
- instruction) */
-
- lntinline = --lntentry;/* get entry with methodinfo * */
- lntentry--; /* skip the special entry */
- lntsize -= 2;
-
- /* search inside the inlined method */
- if (stacktrace_add_method_intern(
- stb,
- (methodinfo*) lntinline->pc,
- lntentry,
- lntsize,
- pc))
- {
- /* the inlined method contained the pc */
- assert(lntinline->line <= -3);
- stacktrace_add_entry(stb, m, (-3) - lntinline->line);
- return true;
- }
- /* pc was not in inlined method, continue
- search. Entries inside the inlined method
- will be skipped because their lntentry->pc
- is higher than pc. */
- break;
-
- case -2:
- /* end of inlined method */
- return false;
-
- /* default: is only reached for an -3-line entry
- after a skipped -2 entry. We can safely ignore
- it and continue searching. */
- }
- }
- else {
- /* found a normal entry */
- stacktrace_add_entry(stb, m, lntentry->line);
- return true;
- }
- }
- }
-
- /* not found */
- return false;
+ return stb;
}
-/* stacktrace_add_method *******************************************************
- Add stacktrace entries[1] for the given method to the stacktrace buffer.
+/* stacktrace_method_add *******************************************************
- IN:
- stb.........stacktracebuffer to fill
- m...........method for which entries should be created
- pv..........pv of method
- pc..........position of program counter within the method's code
+ Add stacktrace entries[1] for the given method to the stacktrace
+ buffer.
+ IN:
+ stb....stacktracebuffer to fill
+ sfi....current stackframeinfo
OUT:
- true, if stacktrace entries were successfully created, false otherwise.
+ stacktracebuffer after possible reallocation.
[1] In case of inlined methods there may be more than one stacktrace
entry for a codegen-level method. (see doc/inlining_stacktrace.txt)
*******************************************************************************/
-static bool stacktrace_add_method(stacktracebuffer *stb, methodinfo *m, u1 *pv,
- u1 *pc)
+static inline stacktracebuffer *stacktrace_method_add(stacktracebuffer *stb, stackframeinfo_t *sfi)
{
- ptrint lntsize; /* size of line number table */
- u1 *lntstart; /* start of line number table */
- linenumbertable_entry *lntentry; /* points to last entry in the table */
- codeinfo *code; /* compiled realization of method */
-
- /* get size of line number table */
-
- lntsize = *((ptrint *) (pv + LineNumberTableSize));
- lntstart = *((u1 **) (pv + LineNumberTableStart));
+ codeinfo *code;
+ void *pv;
+ void *xpc;
+ methodinfo *m;
+ int32_t linenumber;
- /* Subtract the size of the line number entry of the structure,
- since the line number table start points to the pc. */
+ /* Get values from the stackframeinfo. */
- lntentry = (linenumbertable_entry *) (lntstart - SIZEOF_VOID_P);
+ code = sfi->code;
+ pv = sfi->pv;
+ xpc = sfi->xpc;
- /* find the realization of the method the pc is in */
- /* XXX Note: This is preliminary. It would be cleaner */
- /* to get the codeinfo * from the PV */
+ m = code->m;
- code = m->code;
- while (1) {
- if (!code) {
-#ifndef NDEBUG
- method_println(m);
- dolog("Could not find codeinfo for Current PC: %p",(void*)pc);
-#endif
- abort();
- }
-
- if (((ptrint)pc >= (ptrint)code->entrypoint)
- &&
- ( (pc - (u1*)code->entrypoint) < code->mcodelength ))
- {
- /* found */
- break;
- }
+ /* Skip builtin methods. */
- code = code->prev;
- }
+ if (m->flags & ACC_METHOD_BUILTIN)
+ return stb;
- /* search the line number table */
+ /* Search the line number table. */
- if (stacktrace_add_method_intern(stb, m, lntentry, lntsize, pc))
- return true;
+ linenumber = dseg_get_linenumber_from_pc(&m, pv, xpc);
- /* If we get here, just add the entry with line number 0. */
+ /* Add a new entry to the staktrace. */
- stacktrace_add_entry(stb, m, 0);
+ stb = stacktrace_entry_add(stb, m, linenumber);
- return true;
+ return stb;
}
-/* stacktrace_create ***********************************************************
+/* stacktrace_stack_walk *******************************************************
- Generates a stacktrace from the thread passed into a
- stacktracebuffer. The stacktracebuffer is allocated on the GC
- heap.
+ Walk the stack (or the stackframeinfo-chain) to the next method.
- RETURN VALUE:
- pointer to the stacktracebuffer, or
- NULL if an exception has been thrown
+ IN:
+ sfi....stackframeinfo of current method
*******************************************************************************/
-stacktracebuffer *stacktrace_create(threadobject* thread)
+static inline void stacktrace_stack_walk(stackframeinfo_t *sfi)
{
- stacktracebuffer *stb;
- stackframeinfo *sfi;
- methodinfo *m;
- u1 *pv;
- u1 *sp;
- u4 framesize;
- u1 *ra;
- u1 *xpc;
-
- /* prevent compiler warnings */
+ codeinfo *code;
+ void *pv;
+ void *sp;
+ void *ra;
+ void *xpc;
+ uint32_t framesize;
- pv = NULL;
- sp = NULL;
- ra = NULL;
+ /* Get values from the stackframeinfo. */
- /* create a stacktracebuffer in dump memory */
+ code = sfi->code;
+ pv = sfi->pv;
+ sp = sfi->sp;
+ ra = sfi->ra;
+ xpc = sfi->xpc;
- stb = DNEW(stacktracebuffer);
+ /* Get the current stack frame size. */
- stb->capacity = STACKTRACE_CAPACITY_DEFAULT;
- stb->used = 0;
- stb->entries = DMNEW(stacktrace_entry, STACKTRACE_CAPACITY_DEFAULT);
+ framesize = *((uint32_t *) (((intptr_t) pv) + FrameSize));
- /* The first element in the stackframe chain must always be a
- native stackframeinfo (VMThrowable.fillInStackTrace is a native
- function). */
+ /* Get the RA of the current stack frame (RA to the parent Java
+ method) if the current method is a non-leaf method. Otherwise
+ the value in the stackframeinfo is correct (from the signal
+ handler). */
- /* We don't use the STACKFRAMEINFO macro here, as we have to use
- the passed thread. */
-
-#if defined(ENABLE_THREADS)
- sfi = thread->_stackframeinfo;
+#if defined(ENABLE_JIT)
+# if defined(ENABLE_INTRP)
+ if (opt_intrp)
+ ra = intrp_md_stacktrace_get_returnaddress(sp, framesize);
+ else
+# endif
+ {
+ if (!code_is_leafmethod(code))
+ ra = md_stacktrace_get_returnaddress(sp, framesize);
+ }
#else
- sfi = _no_threads_stackframeinfo;
-#endif
-
-#define PRINTMETHODS 0
-
-#if PRINTMETHODS
- printf("\n\nfillInStackTrace start:\n");
- fflush(stdout);
+ ra = intrp_md_stacktrace_get_returnaddress(sp, framesize);
#endif
- /* Loop while we have a method pointer (asm_calljavafunction has
- NULL) or there is a stackframeinfo in the chain. */
-
- m = NULL;
-
- while (m || sfi) {
- /* m == NULL should only happen for the first time and inline
- stackframe infos, like from the exception stubs or the
- patcher wrapper. */
-
- if (m == NULL) {
- /* for native stub stackframe infos, pv is always NULL */
-
- if (sfi->pv == NULL) {
- /* get methodinfo, sp and ra from the current stackframe info */
-
- m = sfi->method;
- sp = sfi->sp; /* sp of parent Java function */
- ra = sfi->ra;
-
- if (m)
- stacktrace_add_entry(stb, m, 0);
-
-#if PRINTMETHODS
- printf("ra=%p sp=%p, ", ra, sp);
- method_print(m);
- printf(": native stub\n");
- fflush(stdout);
-#endif
- /* This is an native stub stackframe info, so we can
- get the parent pv from the return address
- (ICMD_INVOKE*). */
+ /* Get the PV for the parent Java method. */
#if defined(ENABLE_INTRP)
- if (opt_intrp)
- pv = codegen_findmethod(ra);
- else
+ if (opt_intrp)
+ pv = codegen_get_pv_from_pc(ra);
+ else
#endif
- {
+ {
#if defined(ENABLE_JIT)
- pv = md_codegen_findmethod(ra);
+# if defined(__SPARC_64__)
+ sp = md_get_framepointer(sp);
+ pv = md_get_pv_from_stackframe(sp);
+# else
+ pv = md_codegen_get_pv_from_pc(ra);
+# endif
#endif
- }
-
- /* get methodinfo pointer from parent data segment */
-
- m = *((methodinfo **) (pv + MethodPointer));
+ }
- } else {
- /* Inline stackframe infos are special: they have a
- xpc of the actual exception position and the return
- address saved since an inline stackframe info can
- also be in a leaf method (no return address saved
- on stack!!!). ATTENTION: This one is also for
- hardware exceptions!!! */
+ /* Get the codeinfo pointer for the parent Java method. */
- /* get methodinfo, sp and ra from the current stackframe info */
+ code = code_get_codeinfo_for_pv(pv);
- m = sfi->method; /* m == NULL */
- pv = sfi->pv; /* pv of parent Java function */
- sp = sfi->sp; /* sp of parent Java function */
- ra = sfi->ra; /* ra of parent Java function */
- xpc = sfi->xpc; /* actual exception position */
+ /* Calculate the SP for the parent Java method. */
-#if PRINTMETHODS
- printf("ra=%p sp=%p, ", ra, sp);
- printf("NULL: inline stub\n");
- fflush(stdout);
+#if defined(ENABLE_INTRP)
+ if (opt_intrp)
+ sp = *(u1 **) (sp - framesize);
+ else
+#endif
+ {
+#if defined(__I386__) || defined (__X86_64__) || defined (__M68K__)
+ sp = (void *) (((intptr_t) sp) + framesize + SIZEOF_VOID_P);
+#elif defined(__SPARC_64__)
+ /* already has the new sp */
+#else
+ sp = (void *) (((intptr_t) sp) + framesize);
#endif
+ }
- /* get methodinfo from current Java method */
+ /* Store the new values in the stackframeinfo. NOTE: We subtract
+ 1 from the RA to get the XPC, because the RA points to the
+ instruction after the call instruction. */
- m = *((methodinfo **) (pv + MethodPointer));
+ sfi->code = code;
+ sfi->pv = pv;
+ sfi->sp = sp;
+ sfi->ra = ra;
+ sfi->xpc = (void *) (((intptr_t) ra) - 1);
+}
- /* if m == NULL, this is a asm_calljavafunction call */
- if (m != NULL) {
-#if PRINTMETHODS
- printf("ra=%p sp=%p, ", ra, sp);
- method_print(m);
- printf(": inline stub parent");
- fflush(stdout);
-#endif
+/* stacktrace_create ***********************************************************
-#if defined(ENABLE_INTRP)
- if (!opt_intrp) {
-#endif
+ Generates a stacktrace from the thread passed into a
+ stacktracebuffer. The stacktracebuffer is allocated on the
+ dump memory.
+
+ NOTE: The first element in the stackframe chain must always be a
+ native stackframeinfo (e.g. VMThrowable.fillInStackTrace() is
+ a native function).
- /* add the method to the stacktrace */
+ RETURN VALUE:
+ pointer to the stacktracebuffer, or
+ NULL if there is no stacktrace available for the
+ given thread.
- stacktrace_add_method(stb, m, pv, (u1 *) ((ptrint) xpc));
+*******************************************************************************/
- /* get the current stack frame size */
+stacktracebuffer *stacktrace_create(stackframeinfo_t *sfi)
+{
+ stacktracebuffer *stb;
+ stackframeinfo_t tmpsfi;
- framesize = *((u4 *) (pv + FrameSize));
+ /* Create a stacktracebuffer in dump memory. */
-#if PRINTMETHODS
- printf(", framesize=%d\n", framesize);
- fflush(stdout);
-#endif
+ stb = DNEW(stacktracebuffer);
- /* set stack pointer to stackframe of parent Java */
- /* function of the current Java function */
+ stb->capacity = STACKTRACE_CAPACITY_DEFAULT;
+ stb->used = 0;
-#if defined(__I386__) || defined (__X86_64__)
- sp += framesize + SIZEOF_VOID_P;
-#else
- sp += framesize;
+#if !defined(NDEBUG)
+ if (opt_DebugStackTrace) {
+ printf("\n\n---> stacktrace creation start (fillInStackTrace):\n");
+ fflush(stdout);
+ }
#endif
- /* get data segment and methodinfo pointer from parent */
- /* method */
+ /* Put the data from the stackframeinfo into a temporary one. */
-#if defined(ENABLE_JIT)
- pv = md_codegen_findmethod(ra);
-#endif
-
- m = *((methodinfo **) (pv + MethodPointer));
+ /* XXX This is not correct, but a workaround for threads-dump for
+ now. */
+/* assert(sfi != NULL); */
+ if (sfi == NULL)
+ return NULL;
-#if defined(ENABLE_INTRP)
- }
-#endif
- }
-#if PRINTMETHODS
- else {
- printf("ra=%p sp=%p, ", ra, sp);
- printf("asm_calljavafunction\n");
- fflush(stdout);
- }
-#endif
- }
+ tmpsfi.code = sfi->code;
+ tmpsfi.pv = sfi->pv;
+ tmpsfi.sp = sfi->sp;
+ tmpsfi.ra = sfi->ra;
+ tmpsfi.xpc = sfi->xpc;
- /* get previous stackframeinfo in the chain */
+ /* Iterate till we're done. */
- sfi = sfi->prev;
+ for (;;) {
+#if !defined(NDEBUG)
+ /* Print current method information. */
- } else {
-#if PRINTMETHODS
- printf("ra=%p sp=%p, ", ra, sp);
- method_print(m);
- printf(": JIT");
- fflush(stdout);
+ if (opt_DebugStackTrace) {
+ log_start();
+ log_print("[stacktrace: method=%p, pv=%p, sp=%p, ra=%p, xpc=%p, method=",
+ tmpsfi.code->m, tmpsfi.pv, tmpsfi.sp, tmpsfi.ra,
+ tmpsfi.xpc);
+ method_print(tmpsfi.code->m);
+ log_print("]");
+ log_finish();
+ }
#endif
- /* JIT method found, add it to the stacktrace (we subtract
- 1 from the return address since it points the the
- instruction after call). */
+ /* Check for Throwable.fillInStackTrace(). */
- stacktrace_add_method(stb, m, pv, (u1 *) ((ptrint) ra) - 1);
+/* if (tmpsfi.method->name != utf_fillInStackTrace) { */
+
+ /* Add this method to the stacktrace. */
- /* get the current stack frame size */
+ stb = stacktrace_method_add(stb, &tmpsfi);
+/* } */
- framesize = *((u4 *) (pv + FrameSize));
-
-#if PRINTMETHODS
- printf(", framesize=%d\n", framesize);
- fflush(stdout);
-#endif
+ /* Walk the stack (or the stackframeinfo chain) and get the
+ next method. */
- /* get return address of current stack frame */
+ stacktrace_stack_walk(&tmpsfi);
-#if defined(ENABLE_JIT)
-# if defined(ENABLE_INTRP)
- if (opt_intrp)
- ra = intrp_md_stacktrace_get_returnaddress(sp, framesize);
- else
-# endif
- ra = md_stacktrace_get_returnaddress(sp, framesize);
-#else
- ra = intrp_md_stacktrace_get_returnaddress(sp, framesize);
-#endif
+ /* If the new codeinfo pointer is NULL we reached a
+ asm_vm_call_method function. In this case we get the next
+ values from the previous stackframeinfo in the chain.
+ Otherwise the new values have been calculated before. */
- /* get data segment and methodinfo pointer from parent method */
+ if (tmpsfi.code == NULL) {
+ sfi = sfi->prev;
-#if defined(ENABLE_INTRP)
- if (opt_intrp)
- pv = codegen_findmethod(ra);
- else
-#endif
- {
-#if defined(ENABLE_JIT)
- pv = md_codegen_findmethod(ra);
-#endif
- }
+ /* If the previous stackframeinfo in the chain is NULL we
+ reached the top of the stacktrace and leave the
+ loop. */
- m = *((methodinfo **) (pv + MethodPointer));
+ if (sfi == NULL)
+ break;
- /* walk the stack */
+ /* Fill the temporary stackframeinfo with the new
+ values. */
-#if defined(ENABLE_INTRP)
- if (opt_intrp)
- sp = *(u1 **) (sp - framesize);
- else
-#endif
- {
-#if defined(__I386__) || defined (__X86_64__)
- sp += framesize + SIZEOF_VOID_P;
-#else
- sp += framesize;
-#endif
- }
+ tmpsfi.code = sfi->code;
+ tmpsfi.pv = sfi->pv;
+ tmpsfi.sp = sfi->sp;
+ tmpsfi.ra = sfi->ra;
+ tmpsfi.xpc = sfi->xpc;
}
}
+#if !defined(NDEBUG)
+ if (opt_DebugStackTrace) {
+ printf("---> stacktrace creation finished.\n\n");
+ fflush(stdout);
+ }
+#endif
+
/* return the stacktracebuffer */
- return stb;
+ if (stb->used == 0)
+ return NULL;
+ else
+ return stb;
}
*******************************************************************************/
-stacktracebuffer *stacktrace_fillInStackTrace(void)
+java_handle_bytearray_t *stacktrace_fillInStackTrace(void)
{
- stacktracebuffer *stb;
- stacktracebuffer *gcstb;
- s4 dumpsize;
+ stacktracebuffer *stb;
+ java_handle_bytearray_t *ba;
+ s4 ba_size;
+ s4 dumpsize;
CYCLES_STATS_DECLARE_AND_START_WITH_OVERHEAD
/* mark start of dump memory area */
/* create a stacktrace from the current thread */
- stb = stacktrace_create(THREADOBJECT);
- if (!stb)
+ stb = stacktrace_create(STACKFRAMEINFO);
+
+ if (stb == NULL)
goto return_NULL;
/* allocate memory from the GC heap and copy the stacktrace buffer */
+ /* ATTENTION: use a bytearray for this to not confuse the GC */
- gcstb = GCNEW(stacktracebuffer);
-
- if (gcstb == NULL)
- goto return_NULL;
-
- gcstb->capacity = stb->capacity;
- gcstb->used = stb->used;
- gcstb->entries = GCMNEW(stacktrace_entry, stb->used);
+ ba_size = sizeof(stacktracebuffer) +
+ sizeof(stacktrace_entry) * stb->used -
+ sizeof(stacktrace_entry) * STACKTRACE_CAPACITY_DEFAULT;
+ ba = builtin_newarray_byte(ba_size);
- if (gcstb->entries == NULL)
+ if (ba == NULL)
goto return_NULL;
- MCOPY(gcstb->entries, stb->entries, stacktrace_entry, stb->used);
+ MCOPY(LLNI_array_data(ba), stb, u1, ba_size);
/* release dump memory */
CYCLES_STATS_END_WITH_OVERHEAD(stacktrace_fillInStackTrace,
stacktrace_overhead)
- return gcstb;
+ return ba;
return_NULL:
dump_release(dumpsize);
*******************************************************************************/
-java_objectarray *stacktrace_getClassContext(void)
+java_handle_objectarray_t *stacktrace_getClassContext(void)
{
- stacktracebuffer *stb;
- stacktrace_entry *ste;
- java_objectarray *oa;
- s4 oalength;
- s4 i;
- s4 dumpsize;
+ stacktracebuffer *stb;
+ stacktrace_entry *ste;
+ java_handle_objectarray_t *oa;
+ s4 oalength;
+ s4 i;
+ s4 dumpsize;
CYCLES_STATS_DECLARE_AND_START
/* mark start of dump memory area */
/* create a stacktrace for the current thread */
- stb = stacktrace_create(THREADOBJECT);
- if (!stb)
+ stb = stacktrace_create(STACKFRAMEINFO);
+
+ if (stb == NULL)
goto return_NULL;
/* calculate the size of the Class array */
continue;
}
- oa->data[i] = (java_objectheader *) ste->method->class;
+ LLNI_array_direct(oa, i) = (java_object_t *) ste->method->class;
}
/* release dump memory */
*******************************************************************************/
+#if defined(ENABLE_JAVASE)
classinfo *stacktrace_getCurrentClass(void)
{
stacktracebuffer *stb;
/* create a stacktrace for the current thread */
- stb = stacktrace_create(THREADOBJECT);
- if (!stb)
+ stb = stacktrace_create(STACKFRAMEINFO);
+
+ if (stb == NULL)
goto return_NULL; /* XXX exception: how to distinguish from normal NULL return? */
/* iterate over all stacktrace entries and find the first suitable
return NULL;
}
+#endif /* ENABLE_JAVASE */
/* stacktrace_getStack *********************************************************
*******************************************************************************/
-java_objectarray *stacktrace_getStack(void)
+#if defined(ENABLE_JAVASE)
+java_handle_objectarray_t *stacktrace_getStack(void)
{
- stacktracebuffer *stb;
- stacktrace_entry *ste;
- java_objectarray *oa;
- java_objectarray *classes;
- java_objectarray *methodnames;
- classinfo *c;
- java_lang_String *str;
- s4 i;
- s4 dumpsize;
+ stacktracebuffer *stb;
+ stacktrace_entry *ste;
+ java_handle_objectarray_t *oa;
+ java_handle_objectarray_t *classes;
+ java_handle_objectarray_t *methodnames;
+ classinfo *c;
+ java_handle_t *string;
+ s4 i;
+ s4 dumpsize;
CYCLES_STATS_DECLARE_AND_START
/* mark start of dump memory area */
/* create a stacktrace for the current thread */
- stb = stacktrace_create(THREADOBJECT);
- if (!stb)
+ stb = stacktrace_create(STACKFRAMEINFO);
+
+ if (stb == NULL)
goto return_NULL;
/* get the first stacktrace entry */
oa = builtin_anewarray(2, arrayclass_java_lang_Object);
- if (!oa)
+ if (oa == NULL)
goto return_NULL;
classes = builtin_anewarray(stb->used, class_java_lang_Class);
- if (!classes)
+ if (classes == NULL)
goto return_NULL;
methodnames = builtin_anewarray(stb->used, class_java_lang_String);
- if (!methodnames)
+ if (methodnames == NULL)
goto return_NULL;
/* set up the 2-dimensional array */
- oa->data[0] = (java_objectheader *) classes;
- oa->data[1] = (java_objectheader *) methodnames;
+ array_objectarray_element_set(oa, 0, (java_handle_t *) classes);
+ array_objectarray_element_set(oa, 1, (java_handle_t *) methodnames);
/* iterate over all stacktrace entries */
for (i = 0, ste = &(stb->entries[0]); i < stb->used; i++, ste++) {
c = ste->method->class;
- classes->data[i] = (java_objectheader *) c;
- str = javastring_new(ste->method->name);
+ LLNI_array_direct(classes, i) = (java_object_t *) c;
+
+ string = javastring_new(ste->method->name);
- if (!str)
+ if (string == NULL)
goto return_NULL;
- methodnames->data[i] = (java_objectheader *) str;
+ array_objectarray_element_set(methodnames, i, string);
}
/* return the 2-dimensional array */
return NULL;
}
+#endif /* ENABLE_JAVASE */
/* stacktrace_print_trace_from_buffer ******************************************
*******************************************************************************/
-static void stacktrace_print_trace_from_buffer(stacktracebuffer *stb)
+void stacktrace_print_trace_from_buffer(stacktracebuffer *stb)
{
stacktrace_entry *ste;
methodinfo *m;
}
-/* stacktrace_dump_trace *******************************************************
-
- This method is call from signal_handler_sigusr1 to dump the
- stacktrace of the current thread to stdout.
-
-*******************************************************************************/
-
-void stacktrace_dump_trace(void)
-{
- stacktracebuffer *stb;
- s4 dumpsize;
-
-#if 0
- /* get methodinfo pointer from data segment */
-
- m = *((methodinfo **) (pv + MethodPointer));
-
- /* get current stackframe info pointer */
-
- psfi = STACKFRAMEINFO;
-
- /* fill new stackframe info structure */
-
- sfi->prev = *psfi;
- sfi->method = NULL;
- sfi->pv = NULL;
- sfi->sp = sp;
- sfi->ra = ra;
-
- /* store new stackframe info pointer */
-
- *psfi = sfi;
-#endif
-
- /* mark start of dump memory area */
-
- dumpsize = dump_size();
-
- /* create a stacktrace for the current thread */
-
- stb = stacktrace_create(THREADOBJECT);
-
- /* print stacktrace */
-
- if (stb) {
- stacktrace_print_trace_from_buffer(stb);
-
- } else {
- puts("\t<<No stacktrace available>>");
- fflush(stdout);
- }
-
- dump_release(dumpsize);
-}
-
-
/* stacktrace_print_trace ******************************************************
Print the stacktrace of a given exception. More or less a wrapper
*******************************************************************************/
-void stacktrace_print_trace(java_objectheader *xptr)
+void stacktrace_print_trace(java_handle_t *xptr)
{
- java_lang_Throwable *t;
- java_lang_VMThrowable *vmt;
- stacktracebuffer *stb;
+ java_lang_Throwable *t;
+#if defined(WITH_CLASSPATH_GNU)
+ java_lang_VMThrowable *vmt;
+#endif
+ java_handle_bytearray_t *ba;
+ stacktracebuffer *stb;
t = (java_lang_Throwable *) xptr;
/* now print the stacktrace */
- vmt = t->vmState;
- stb = (stacktracebuffer *) vmt->vmData;
+#if defined(WITH_CLASSPATH_GNU)
+ LLNI_field_get_ref(t, vmState, vmt);
+ LLNI_field_get_ref(vmt, vmData, ba);
+#elif defined(WITH_CLASSPATH_SUN) || defined(WITH_CLASSPATH_CLDC1_1)
+ LLNI_field_get_ref(t, backtrace, ba);
+#else
+# error unknown classpath configuration
+#endif
+
+ assert(ba);
+ stb = (stacktracebuffer *) LLNI_array_data(ba);
stacktrace_print_trace_from_buffer(stb);
}
projects / cacao.git / blobdiff