/* src/vm/jit/codegen-common.c - architecture independent code generator stuff
- 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: Reinhard Grafl
- Andreas Krall
- Christian Thalinger
- Joseph Wenninger
- Edwin Steiner
-
All functions assume the following code area / data area layout:
+-----------+
memory. All functions writing values into the data area return the offset
relative the begin of the code area (start of procedure).
- $Id: codegen-common.c 6251 2006-12-27 23:15:56Z twisti $
-
*/
# include "codegen.h"
#endif
-#if defined(__ARM__)
-/* this is required for REG_SPLIT */
-# include "md-abi.h"
-#endif
+#include "md-abi.h"
#include "mm/memory.h"
+
#include "toolbox/avl.h"
#include "toolbox/list.h"
#include "toolbox/logging.h"
+
#include "native/jni.h"
+#include "native/llni.h"
+#include "native/localref.h"
#include "native/native.h"
-#if defined(ENABLE_THREADS)
-# include "threads/native/threads.h"
-#endif
+#include "native/include/java_lang_Class.h"
+
+#include "threads/threads-common.h"
+#include "vm/builtin.h"
#include "vm/exceptions.h"
-#include "vm/method.h"
-#include "vm/options.h"
-#include "vm/statistics.h"
#include "vm/stringlocal.h"
+
+#include "vm/jit/abi.h"
#include "vm/jit/asmpart.h"
#include "vm/jit/codegen-common.h"
#endif
#include "vm/jit/dseg.h"
+#include "vm/jit/emit-common.h"
#include "vm/jit/jit.h"
-#include "vm/jit/stacktrace.h"
+#include "vm/jit/md.h"
+#include "vm/jit/methodheader.h"
+#include "vm/jit/patcher-common.h"
#include "vm/jit/replace.h"
+#if defined(ENABLE_SSA)
+# include "vm/jit/optimizing/lsra.h"
+# include "vm/jit/optimizing/ssa.h"
+#endif
+#include "vm/jit/stacktrace.h"
+#include "vm/jit/trace.h"
#if defined(ENABLE_INTRP)
#include "vm/jit/intrp/intrp.h"
#endif
+#include "vmcore/method.h"
+#include "vmcore/options.h"
+
+# include "vmcore/statistics.h"
+
+#if defined(ENABLE_VMLOG)
+#include <vmlog_cacao.h>
+#endif
+
+#include "show.h"
/* in this tree we store all method addresses *********************************/
-static avl_tree *methodtree = NULL;
-static s4 methodtree_comparator(const void *pc, const void *element);
+static avl_tree_t *methodtree = NULL;
+static s4 methodtree_comparator(const void *treenode, const void *node);
/* codegen_init ****************************************************************
mte = NEW(methodtree_element);
mte->startpc = (u1 *) (ptrint) asm_vm_call_method;
- mte->endpc = (u1 *) ((ptrint) asm_call_jit_compiler - 1);
+ mte->endpc = (u1 *) (ptrint) asm_vm_call_method_end;
avl_insert(methodtree, mte);
#endif /* defined(ENABLE_JIT) */
+
}
+
}
m = jd->m;
cd = jd->cd;
- cd->mcodebase = DMNEW(u1, MCODEINITSIZE);
- cd->mcodeend = cd->mcodebase + MCODEINITSIZE;
- cd->mcodesize = MCODEINITSIZE;
+ /* initialize members */
+
+ cd->flags = 0;
+
+ cd->mcodebase = DMNEW(u1, MCODEINITSIZE);
+ cd->mcodeend = cd->mcodebase + MCODEINITSIZE;
+ cd->mcodesize = MCODEINITSIZE;
/* initialize mcode variables */
cd->jumpreferences = NULL;
-#if defined(__I386__) || defined(__X86_64__) || defined(__XDSPCORE__) || defined(ENABLE_INTRP)
+#if defined(__I386__) || defined(__X86_64__) || defined(__XDSPCORE__) || defined(__M68K__) || defined(ENABLE_INTRP)
cd->datareferences = NULL;
#endif
- cd->exceptionrefs = NULL;
/* cd->patchrefs = list_create_dump(OFFSET(patchref, linkage)); */
cd->patchrefs = NULL;
+ cd->brancheslabel = list_create_dump(OFFSET(branch_label_ref_t, linkage));
+ cd->listcritical = list_create_dump(OFFSET(critical_section_ref_t, linkage));
cd->linenumberreferences = NULL;
cd->linenumbertablesizepos = 0;
cd->linenumbertablestartpos = 0;
cd->linenumbertab = 0;
+}
+
+
+/* codegen_reset ***************************************************************
+
+ Resets the codegen data structure so we can recompile the method.
+
+*******************************************************************************/
+
+static void codegen_reset(jitdata *jd)
+{
+ codeinfo *code;
+ codegendata *cd;
+ basicblock *bptr;
+
+ /* get required compiler data */
+
+ code = jd->code;
+ cd = jd->cd;
+
+ /* reset error flag */
+
+ cd->flags &= ~CODEGENDATA_FLAG_ERROR;
+
+ /* reset some members, we reuse the code memory already allocated
+ as this should have almost the correct size */
+
+ cd->mcodeptr = cd->mcodebase;
+ cd->lastmcodeptr = cd->mcodebase;
+
+ cd->dseg = NULL;
+ cd->dseglen = 0;
+
+ cd->jumpreferences = NULL;
+
+#if defined(__I386__) || defined(__X86_64__) || defined(__XDSPCORE__) || defined(__M68K__) || defined(ENABLE_INTRP)
+ cd->datareferences = NULL;
+#endif
+
+/* cd->patchrefs = list_create_dump(OFFSET(patchref, linkage)); */
+ cd->patchrefs = NULL;
+ cd->brancheslabel = list_create_dump(OFFSET(branch_label_ref_t, linkage));
+ cd->listcritical = list_create_dump(OFFSET(critical_section_ref_t, linkage));
+
+ cd->linenumberreferences = NULL;
+ cd->linenumbertablesizepos = 0;
+ cd->linenumbertablestartpos = 0;
+ cd->linenumbertab = 0;
- cd->method = m;
+ /* We need to clear the mpc and the branch references from all
+ basic blocks as they will definitely change. */
- cd->maxstack = m->maxstack;
+ for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
+ bptr->mpc = -1;
+ bptr->branchrefs = NULL;
+ }
-#if defined(ENABLE_THREADS)
- cd->threadcritcurrent.next = NULL;
- cd->threadcritcount = 0;
+ /* We need to clear all the patcher references from the codeinfo
+ since they all will be regenerated */
+
+ patcher_list_reset(code);
+
+#if defined(ENABLE_REPLACEMENT)
+ code->rplpoints = NULL;
+ code->rplpointcount = 0;
+ code->regalloc = NULL;
+ code->regalloccount = 0;
+ code->globalcount = 0;
#endif
}
+/* codegen_generate ************************************************************
+
+ Generates the code for the currently compiled method.
+
+*******************************************************************************/
+
+bool codegen_generate(jitdata *jd)
+{
+ codegendata *cd;
+
+ /* get required compiler data */
+
+ cd = jd->cd;
+
+ /* call the machine-dependent code generation function */
+
+ if (!codegen_emit(jd))
+ return false;
+
+ /* check for an error */
+
+ if (CODEGENDATA_HAS_FLAG_ERROR(cd)) {
+ /* check for long-branches flag, if it is set we recompile the
+ method */
+
+#if !defined(NDEBUG)
+ if (compileverbose)
+ log_message_method("Re-generating code: ", jd->m);
+#endif
+
+ /* XXX maybe we should tag long-branches-methods for recompilation */
+
+ if (CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
+ /* we have to reset the codegendata structure first */
+
+ codegen_reset(jd);
+
+ /* and restart the compiler run */
+
+ if (!codegen_emit(jd))
+ return false;
+ }
+ else {
+ vm_abort("codegen_generate: unknown error occurred during codegen_emit: flags=%x\n", cd->flags);
+ }
+
+#if !defined(NDEBUG)
+ if (compileverbose)
+ log_message_method("Re-generating code done: ", jd->m);
+#endif
+ }
+
+ /* reallocate the memory and finish the code generation */
+
+ codegen_finish(jd);
+
+ /* everything's ok */
+
+ return true;
+}
+
+
/* codegen_close ***************************************************************
TODO
cd->mcodeptr = cd->mcodebase + (cd->mcodeptr - oldmcodebase);
-#if defined(__I386__) || defined(__MIPS__) || defined(__X86_64__) || defined(ENABLE_INTRP)
+#if defined(__I386__) || defined(__MIPS__) || defined(__X86_64__) || defined(__M68K__) || defined(ENABLE_INTRP) \
+ || defined(__SPARC_64__)
/* adjust the pointer to the last patcher position */
if (cd->lastmcodeptr != NULL)
*******************************************************************************/
-void codegen_add_branch_ref(codegendata *cd, basicblock *target)
+void codegen_add_branch_ref(codegendata *cd, basicblock *target, s4 condition, s4 reg, u4 options)
{
- s4 branchmpc;
+ branchref *br;
+ s4 branchmpc;
+
+ STATISTICS(count_branches_unresolved++);
/* calculate the mpc of the branch instruction */
branchmpc = cd->mcodeptr - cd->mcodebase;
-#if defined(ENABLE_JIT)
- /* Check if the target basicblock has already a start pc, so the
- jump is backward and we can resolve it immediately. */
-
- if ((target->mpc >= 0)
-# if defined(ENABLE_INTRP)
- /* The interpreter uses absolute branches, so we do branch
- resolving after the code and data segment move. */
+ br = DNEW(branchref);
- && !opt_intrp
-# endif
- )
- {
- md_codegen_patch_branch(cd, branchmpc, target->mpc);
- }
- else
-#endif
- {
- branchref *br = DNEW(branchref);
+ br->branchmpc = branchmpc;
+ br->condition = condition;
+ br->reg = reg;
+ br->options = options;
+ br->next = target->branchrefs;
- br->branchpos = branchmpc;
- br->next = target->branchrefs;
-
- target->branchrefs = br;
- }
+ target->branchrefs = br;
}
void codegen_resolve_branchrefs(codegendata *cd, basicblock *bptr)
{
branchref *br;
- s4 branchmpc;
- s4 targetmpc;
+ u1 *mcodeptr;
+
+ /* Save the mcodeptr because in the branch emitting functions
+ we generate code somewhere inside already generated code,
+ but we're still in the actual code generation phase. */
- /* set target */
+ mcodeptr = cd->mcodeptr;
- targetmpc = bptr->mpc;
+ /* just to make sure */
+
+ assert(bptr->mpc >= 0);
for (br = bptr->branchrefs; br != NULL; br = br->next) {
- branchmpc = br->branchpos;
+ /* temporary set the mcodeptr */
+
+ cd->mcodeptr = cd->mcodebase + br->branchmpc;
+
+ /* emit_bccz and emit_branch emit the correct code, even if we
+ pass condition == BRANCH_UNCONDITIONAL or reg == -1. */
- md_codegen_patch_branch(cd, branchmpc, targetmpc);
+ emit_bccz(cd, bptr, br->condition, br->reg, br->options);
}
+
+ /* restore mcodeptr */
+
+ cd->mcodeptr = mcodeptr;
}
-/* codegen_add_exception_ref ***************************************************
+/* codegen_branch_label_add ****************************************************
- Prepends an exception branch to the list.
+ Append an branch to the label-branch list.
*******************************************************************************/
-static void codegen_add_exception_ref(codegendata *cd, s4 reg,
- functionptr function)
+void codegen_branch_label_add(codegendata *cd, s4 label, s4 condition, s4 reg, u4 options)
{
- s4 branchmpc;
- exceptionref *er;
+ list_t *list;
+ branch_label_ref_t *br;
+ s4 mpc;
- branchmpc = cd->mcodeptr - cd->mcodebase;
+ /* get the label list */
+
+ list = cd->brancheslabel;
+
+ /* calculate the current mpc */
+
+ mpc = cd->mcodeptr - cd->mcodebase;
- er = DNEW(exceptionref);
+ br = DNEW(branch_label_ref_t);
- er->branchpos = branchmpc;
- er->reg = reg;
- er->function = function;
+ br->mpc = mpc;
+ br->label = label;
+ br->condition = condition;
+ br->reg = reg;
+ br->options = options;
- er->next = cd->exceptionrefs;
+ /* add the branch to the list */
- cd->exceptionrefs = er;
+ list_add_last_unsynced(list, br);
}
-/* codegen_add_arithmeticexception_ref *****************************************
+/* codegen_add_patch_ref *******************************************************
- Adds an ArithmeticException branch to the list.
+ Appends a new patcher reference to the list of patching positions.
*******************************************************************************/
-void codegen_add_arithmeticexception_ref(codegendata *cd)
+void codegen_add_patch_ref(codegendata *cd, functionptr patcher, voidptr ref,
+ s4 disp)
{
- codegen_add_exception_ref(cd, -1, STACKTRACE_inline_arithmeticexception);
-}
+ patchref *pr;
+ s4 branchmpc;
+ branchmpc = cd->mcodeptr - cd->mcodebase;
-/* codegen_add_arrayindexoutofboundsexception_ref ******************************
+ pr = DNEW(patchref);
- Adds an ArrayIndexOutOfBoundsException branch to the list.
+ pr->branchpos = branchmpc;
+ pr->disp = disp;
+ pr->patcher = patcher;
+ pr->ref = ref;
-*******************************************************************************/
+/* list_add_first(cd->patchrefs, pr); */
+ pr->next = cd->patchrefs;
+ cd->patchrefs = pr;
-void codegen_add_arrayindexoutofboundsexception_ref(codegendata *cd, s4 reg)
-{
- codegen_add_exception_ref(cd, reg,
- STACKTRACE_inline_arrayindexoutofboundsexception);
+ /* Generate NOPs for opt_shownops. */
+
+ if (opt_shownops)
+ PATCHER_NOPS;
+
+#if defined(ENABLE_JIT) && (defined(__I386__) || defined(__M68K__) || defined(__MIPS__) \
+ || defined(__SPARC_64__) || defined(__X86_64__))
+
+ /* On some architectures the patcher stub call instruction might
+ be longer than the actual instruction generated. On this
+ architectures we store the last patcher call position and after
+ the basic block code generation is completed, we check the
+ range and maybe generate some nop's. */
+ /* The nops are generated in codegen_emit in each codegen */
+
+ cd->lastmcodeptr = cd->mcodeptr + PATCHER_CALL_SIZE;
+#endif
}
-/* codegen_add_arraystoreexception_ref *****************************************
+/* codegen_critical_section_new ************************************************
- Adds an ArrayStoreException branch to the list.
+ Allocates a new critical-section reference and adds it to the
+ critical-section list.
*******************************************************************************/
-void codegen_add_arraystoreexception_ref(codegendata *cd)
+#if defined(ENABLE_THREADS)
+void codegen_critical_section_new(codegendata *cd)
{
- codegen_add_exception_ref(cd, -1, STACKTRACE_inline_arraystoreexception);
-}
+ list_t *list;
+ critical_section_ref_t *csr;
+ s4 mpc;
+
+ /* get the critical section list */
+ list = cd->listcritical;
+
+ /* calculate the current mpc */
-/* codegen_add_classcastexception_ref ******************************************
+ mpc = cd->mcodeptr - cd->mcodebase;
- Adds an ClassCastException branch to the list.
+ csr = DNEW(critical_section_ref_t);
-*******************************************************************************/
+ /* We only can set restart right now, as start and end are set by
+ the following, corresponding functions. */
-void codegen_add_classcastexception_ref(codegendata *cd, s4 reg)
-{
- codegen_add_exception_ref(cd, reg, STACKTRACE_inline_classcastexception);
+ csr->start = -1;
+ csr->end = -1;
+ csr->restart = mpc;
+
+ /* add the branch to the list */
+
+ list_add_last_unsynced(list, csr);
}
+#endif
-/* codegen_add_nullpointerexception_ref ****************************************
+/* codegen_critical_section_start **********************************************
- Adds an NullPointerException branch to the list.
+ Set the start-point of the current critical section (which is the
+ last element of the list).
*******************************************************************************/
-void codegen_add_nullpointerexception_ref(codegendata *cd)
+#if defined(ENABLE_THREADS)
+void codegen_critical_section_start(codegendata *cd)
{
- codegen_add_exception_ref(cd, -1, STACKTRACE_inline_nullpointerexception);
+ list_t *list;
+ critical_section_ref_t *csr;
+ s4 mpc;
+
+ /* get the critical section list */
+
+ list = cd->listcritical;
+
+ /* calculate the current mpc */
+
+ mpc = cd->mcodeptr - cd->mcodebase;
+
+ /* get the current critical section */
+
+ csr = list_last_unsynced(list);
+
+ /* set the start point */
+
+ assert(csr->start == -1);
+
+ csr->start = mpc;
}
+#endif
-/* codegen_add_fillinstacktrace_ref ********************************************
+/* codegen_critical_section_end ************************************************
- Adds a fillInStackTrace branch to the list.
+ Set the end-point of the current critical section (which is the
+ last element of the list).
*******************************************************************************/
-void codegen_add_fillinstacktrace_ref(codegendata *cd)
+#if defined(ENABLE_THREADS)
+void codegen_critical_section_end(codegendata *cd)
{
- codegen_add_exception_ref(cd, -1, STACKTRACE_inline_fillInStackTrace);
+ list_t *list;
+ critical_section_ref_t *csr;
+ s4 mpc;
+
+ /* get the critical section list */
+
+ list = cd->listcritical;
+
+ /* calculate the current mpc */
+
+ mpc = cd->mcodeptr - cd->mcodebase;
+
+ /* get the current critical section */
+
+ csr = list_last_unsynced(list);
+
+ /* set the end point */
+
+ assert(csr->end == -1);
+
+ csr->end = mpc;
}
+#endif
-/* codegen_add_patch_ref *******************************************************
+/* codegen_critical_section_finish *********************************************
- Appends a new patcher reference to the list of patching positions.
+ Finish the critical sections, create the critical section nodes for
+ the AVL tree and insert them into the tree.
*******************************************************************************/
-void codegen_add_patch_ref(codegendata *cd, functionptr patcher, voidptr ref,
- s4 disp)
+#if defined(ENABLE_THREADS)
+static void codegen_critical_section_finish(jitdata *jd)
{
- patchref *pr;
- s4 branchmpc;
+ codeinfo *code;
+ codegendata *cd;
+ list_t *list;
+ critical_section_ref_t *csr;
+ critical_section_node_t *csn;
- branchmpc = cd->mcodeptr - cd->mcodebase;
+ /* get required compiler data */
- pr = DNEW(patchref);
+ code = jd->code;
+ cd = jd->cd;
- pr->branchpos = branchmpc;
- pr->disp = disp;
- pr->patcher = patcher;
- pr->ref = ref;
+ /* get the critical section list */
-/* list_add_first(cd->patchrefs, pr); */
- pr->next = cd->patchrefs;
- cd->patchrefs = pr;
+ list = cd->listcritical;
-#if defined(ENABLE_JIT) && (defined(__ALPHA__) || defined(__MIPS__) || defined(__POWERPC__) || defined(__X86_64__))
- /* Generate NOPs for opt_shownops. */
+ /* iterate over all critical sections */
- if (opt_shownops)
- PATCHER_NOPS;
-#endif
+ for (csr = list_first_unsynced(list); csr != NULL;
+ csr = list_next_unsynced(list, csr)) {
+ /* check if all points are set */
-#if defined(ENABLE_JIT) && (defined(__I386__) || defined(__MIPS__) || defined(__X86_64__))
- /* On some architectures the patcher stub call instruction might
- be longer than the actual instruction generated. On this
- architectures we store the last patcher call position and after
- the basic block code generation is completed, we check the
- range and maybe generate some nop's. */
+ assert(csr->start != -1);
+ assert(csr->end != -1);
+ assert(csr->restart != -1);
- cd->lastmcodeptr = cd->mcodeptr + PATCHER_CALL_SIZE;
-#endif
+ /* allocate tree node */
+
+ csn = NEW(critical_section_node_t);
+
+ csn->start = code->entrypoint + csr->start;
+ csn->end = code->entrypoint + csr->end;
+ csn->restart = code->entrypoint + csr->restart;
+
+ /* insert into the tree */
+
+ critical_section_register(csn);
+ }
}
+#endif
/* methodtree_comparator *******************************************************
Comparator function used for the AVL tree of methods.
+ ARGUMENTS:
+ treenode....the node from the tree
+ node........the node to compare to the tree-node
+
*******************************************************************************/
-static s4 methodtree_comparator(const void *pc, const void *element)
+static s4 methodtree_comparator(const void *treenode, const void *node)
{
methodtree_element *mte;
methodtree_element *mtepc;
- mte = (methodtree_element *) element;
- mtepc = (methodtree_element *) pc;
+ mte = (methodtree_element *) treenode;
+ mtepc = (methodtree_element *) node;
/* compare both startpc and endpc of pc, even if they have the same value,
otherwise the avl_probe sometimes thinks the element is already in the
tree */
- if ((long) mte->startpc <= (long) mtepc->startpc &&
- (long) mtepc->startpc <= (long) mte->endpc &&
- (long) mte->startpc <= (long) mtepc->endpc &&
- (long) mtepc->endpc <= (long) mte->endpc) {
+#ifdef __S390__
+ /* On S390 addresses are 31 bit. Compare only 31 bits of value.
+ */
+# define ADDR_MASK(a) ((a) & 0x7FFFFFFF)
+#else
+# define ADDR_MASK(a) (a)
+#endif
+
+ if (ADDR_MASK((long) mte->startpc) <= ADDR_MASK((long) mtepc->startpc) &&
+ ADDR_MASK((long) mtepc->startpc) <= ADDR_MASK((long) mte->endpc) &&
+ ADDR_MASK((long) mte->startpc) <= ADDR_MASK((long) mtepc->endpc) &&
+ ADDR_MASK((long) mtepc->endpc) <= ADDR_MASK((long) mte->endpc)) {
return 0;
- } else if ((long) mtepc->startpc < (long) mte->startpc) {
+ } else if (ADDR_MASK((long) mtepc->startpc) < ADDR_MASK((long) mte->startpc)) {
return -1;
} else {
return 1;
}
+
+# undef ADDR_MASK
}
if (mte == NULL) {
/* No method was found. Let's dump a stacktrace. */
+#if defined(ENABLE_VMLOG)
+ vmlog_cacao_signl("SIGSEGV");
+#endif
+
log_println("We received a SIGSEGV and tried to handle it, but we were");
log_println("unable to find a Java method at:");
log_println("");
log_println("PC=0x%08x", pc);
#endif
log_println("");
+ assert(0);
log_println("Dumping the current stacktrace:");
- stacktrace_dump_trace(THREADOBJECT);
+#if defined(ENABLE_THREADS)
+ /* XXX michi: This should be available even without threads! */
+ threads_print_stacktrace();
+#endif
vm_abort("Exiting...");
}
*******************************************************************************/
+#if defined(ENABLE_REPLACEMENT)
#if !defined(NDEBUG)
void codegen_set_replacement_point_notrap(codegendata *cd, s4 type)
#else
cd->replacementpoint++;
}
+#endif /* defined(ENABLE_REPLACEMENT) */
/* codegen_set_replacement_point ***********************************************
*******************************************************************************/
+#if defined(ENABLE_REPLACEMENT)
#if !defined(NDEBUG)
void codegen_set_replacement_point(codegendata *cd, s4 type)
#else
cd->lastmcodeptr = cd->mcodeptr + PATCHER_CALL_SIZE;
}
+#endif /* defined(ENABLE_REPLACEMENT) */
/* codegen_finish **************************************************************
#endif
s4 alignedmcodelen;
jumpref *jr;
+ patchref_t *pr;
u1 *epoint;
- s4 extralen;
s4 alignedlen;
/* get required compiler data */
mcodelen = (s4) (cd->mcodeptr - cd->mcodebase);
-#if defined(ENABLE_THREADS)
- extralen = sizeof(critical_section_node_t) * cd->threadcritcount;
-#else
- extralen = 0;
-#endif
-
#if defined(ENABLE_STATISTICS)
if (opt_stat) {
count_code_len += mcodelen;
/* allocate new memory */
code->mcodelength = mcodelen + cd->dseglen;
- code->mcode = CNEW(u1, alignedlen + extralen);
+ code->mcode = CNEW(u1, alignedlen);
/* set the entrypoint of the method */
*((ptrint *) ((ptrint) epoint + cd->linenumbertablesizepos)) = lrtlen;
}
+ /* patcher resolving */
+
+ pr = list_first_unsynced(code->patchers);
+ while (pr) {
+ pr->mpc += (ptrint) epoint;
+ pr->datap = (ptrint) (pr->disp + epoint);
+ pr = list_next_unsynced(code->patchers, pr);
+ }
+
+#if defined(ENABLE_REPLACEMENT)
/* replacement point resolving */
{
int i;
rplpoint *rp;
- code->replacementstubs += (ptrint) epoint;
-
rp = code->rplpoints;
for (i=0; i<code->rplpointcount; ++i, ++rp) {
rp->pc = (u1*) ((ptrint) epoint + (ptrint) rp->pc);
}
}
+#endif /* defined(ENABLE_REPLACEMENT) */
/* add method into methodtree to find the entrypoint */
codegen_insertmethod(code->entrypoint, code->entrypoint + mcodelen);
-#if defined(__I386__) || defined(__X86_64__) || defined(__XDSPCORE__) || defined(ENABLE_INTRP)
+#if defined(__I386__) || defined(__X86_64__) || defined(__XDSPCORE__) || defined(__M68K__) || defined(ENABLE_INTRP)
/* resolve data segment references */
dseg_resolve_datareferences(jd);
#endif
#if defined(ENABLE_THREADS)
- {
- critical_section_node_t *n = (critical_section_node_t *) ((ptrint) code->mcode + alignedlen);
- s4 i;
- codegen_critical_section_t *nt = cd->threadcrit;
-
- for (i = 0; i < cd->threadcritcount; i++) {
- n->mcodebegin = (u1 *) (ptrint) code->mcode + nt->mcodebegin;
- n->mcodeend = (u1 *) (ptrint) code->mcode + nt->mcodeend;
- n->mcoderestart = (u1 *) (ptrint) code->mcode + nt->mcoderestart;
- critical_register_critical_section(n);
- n++;
- nt = nt->next;
- }
- }
+ /* create cirtical sections */
+
+ codegen_critical_section_finish(jd);
#endif
/* flush the instruction and data caches */
}
-/* codegen_createnativestub ****************************************************
+/* codegen_generate_stub_compiler **********************************************
+
+ Wrapper for codegen_emit_stub_compiler.
+
+ Returns:
+ pointer to the compiler stub code.
+
+*******************************************************************************/
+
+u1 *codegen_generate_stub_compiler(methodinfo *m)
+{
+ jitdata *jd;
+ codegendata *cd;
+ ptrint *d; /* pointer to data memory */
+ u1 *c; /* pointer to code memory */
+ s4 dumpsize;
+
+ /* mark dump memory */
+
+ dumpsize = dump_size();
+
+ /* allocate required data structures */
+
+ jd = DNEW(jitdata);
+
+ jd->m = m;
+ jd->cd = DNEW(codegendata);
+ jd->flags = 0;
+
+ /* get required compiler data */
+
+ cd = jd->cd;
+
+ /* allocate code memory */
+
+ c = CNEW(u1, 3 * SIZEOF_VOID_P + COMPILERSTUB_CODESIZE);
+
+ /* set pointers correctly */
+
+ d = (ptrint *) c;
+
+ cd->mcodebase = c;
+
+ c = c + 3 * SIZEOF_VOID_P;
+ cd->mcodeptr = c;
+
+ /* NOTE: The codeinfo pointer is actually a pointer to the
+ methodinfo (this fakes a codeinfo structure). */
+
+ d[0] = (ptrint) asm_call_jit_compiler;
+ d[1] = (ptrint) m;
+ d[2] = (ptrint) &d[1]; /* fake code->m */
+
+ /* call the emit function */
+
+ codegen_emit_stub_compiler(jd);
+
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ count_cstub_len += 3 * SIZEOF_VOID_P + COMPILERSTUB_CODESIZE;
+#endif
+
+ /* flush caches */
+
+ md_cacheflush(cd->mcodebase, 3 * SIZEOF_VOID_P + COMPILERSTUB_CODESIZE);
+
+ /* release dump memory */
+
+ dump_release(dumpsize);
+
+ /* return native stub code */
+
+ return c;
+}
+
+
+/* codegen_generate_stub_builtin ***********************************************
+
+ Wrapper for codegen_emit_stub_builtin.
+
+*******************************************************************************/
+
+void codegen_generate_stub_builtin(methodinfo *m, builtintable_entry *bte)
+{
+#if defined(__ARM__) || defined(__ALPHA__) || defined(__I386__) || defined(__M68K__) || defined(__POWERPC__) || defined(__SPARC64__) || defined(__X86_64__)
+ jitdata *jd;
+ codeinfo *code;
+ s4 dumpsize;
+
+ /* mark dump memory */
+
+ dumpsize = dump_size();
+
+ jd = DNEW(jitdata);
+
+ jd->m = m;
+ jd->cd = DNEW(codegendata);
+ jd->rd = NULL;
+ jd->flags = 0;
+
+ /* Allocate codeinfo memory from the heap as we need to keep them. */
+
+ jd->code = code_codeinfo_new(m); /* XXX check allocation */
+
+ /* get required compiler data */
+
+ code = jd->code;
+
+ /* setup code generation stuff */
+
+ codegen_setup(jd);
+
+ /* generate the code */
+
+#if defined(ENABLE_JIT)
+# if defined(ENABLE_INTRP)
+ if (!opt_intrp) {
+# endif
+ assert(bte->fp != NULL);
+ codegen_emit_stub_native(jd, bte->md, bte->fp);
+# if defined(ENABLE_INTRP)
+ }
+# endif
+#endif
+
+ /* reallocate the memory and finish the code generation */
+
+ codegen_finish(jd);
+
+ /* set the stub entry point in the builtin table */
+
+ bte->stub = code->entrypoint;
+
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ size_stub_native += code->mcodelength;
+#endif
+
+#if !defined(NDEBUG) && defined(ENABLE_DISASSEMBLER)
+ /* disassemble native stub */
+
+ if (opt_DisassembleStubs) {
+ codegen_disassemble_stub(m,
+ (u1 *) (ptrint) code->entrypoint,
+ (u1 *) (ptrint) code->entrypoint + (code->mcodelength - jd->cd->dseglen));
+
+ /* show data segment */
+
+ if (opt_showddatasegment)
+ dseg_display(jd);
+ }
+#endif /* !defined(NDEBUG) && defined(ENABLE_DISASSEMBLER) */
+
+ /* release memory */
+
+ dump_release(dumpsize);
+#endif /* architecture list */
+}
+
+
+/* codegen_generate_stub_native ************************************************
- Wrapper for createnativestub.
+ Wrapper for codegen_emit_stub_native.
Returns:
the codeinfo representing the stub code.
*******************************************************************************/
-codeinfo *codegen_createnativestub(functionptr f, methodinfo *m)
+codeinfo *codegen_generate_stub_native(methodinfo *m, functionptr f)
{
jitdata *jd;
codeinfo *code;
# if defined(ENABLE_INTRP)
if (!opt_intrp)
# endif
- md_param_alloc(nmd);
+ /* pre-allocate the arguments for the native ABI */
+
+ md_param_alloc_native(nmd);
#endif
/* generate the code */
#if defined(ENABLE_JIT)
# if defined(ENABLE_INTRP)
if (opt_intrp)
- code->entrypoint = intrp_createnativestub(f, jd, nmd);
+ intrp_createnativestub(f, jd, nmd);
else
# endif
- code->entrypoint = createnativestub(f, jd, nmd);
+ codegen_emit_stub_native(jd, nmd, f);
#else
- code->entrypoint = intrp_createnativestub(f, jd, nmd);
+ intrp_createnativestub(f, jd, nmd);
#endif
+ /* reallocate the memory and finish the code generation */
+
+ codegen_finish(jd);
+
#if defined(ENABLE_STATISTICS)
+ /* must be done after codegen_finish() */
+
if (opt_stat)
- count_nstub_len += code->mcodelength;
+ size_stub_native += code->mcodelength;
#endif
-#if !defined(NDEBUG)
+#if !defined(NDEBUG) && defined(ENABLE_DISASSEMBLER)
/* disassemble native stub */
- if (opt_shownativestub) {
-#if defined(ENABLE_DISASSEMBLER)
- codegen_disassemble_nativestub(m,
- (u1 *) (ptrint) code->entrypoint,
- (u1 *) (ptrint) code->entrypoint + (code->mcodelength - jd->cd->dseglen));
-#endif
+ if (opt_DisassembleStubs) {
+# if defined(ENABLE_DEBUG_FILTER)
+ if (m->filtermatches & SHOW_FILTER_FLAG_SHOW_METHOD)
+# endif
+ {
+ codegen_disassemble_stub(m,
+ (u1 *) (ptrint) code->entrypoint,
+ (u1 *) (ptrint) code->entrypoint + (code->mcodelength - jd->cd->dseglen));
- /* show data segment */
+ /* show data segment */
- if (opt_showddatasegment)
- dseg_display(jd);
+ if (opt_showddatasegment)
+ dseg_display(jd);
+ }
}
-#endif /* !defined(NDEBUG) */
+#endif /* !defined(NDEBUG) && defined(ENABLE_DISASSEMBLER) */
/* release memory */
/* codegen_disassemble_nativestub **********************************************
- Disassembles the generated native stub.
+ Disassembles the generated builtin or native stub.
*******************************************************************************/
#if defined(ENABLE_DISASSEMBLER)
-void codegen_disassemble_nativestub(methodinfo *m, u1 *start, u1 *end)
+void codegen_disassemble_stub(methodinfo *m, u1 *start, u1 *end)
{
- printf("Native stub: ");
- utf_fprint_printable_ascii_classname(stdout, m->class->name);
+ printf("Stub code: ");
+ if (m->class != NULL)
+ utf_fprint_printable_ascii_classname(stdout, m->class->name);
+ else
+ printf("NULL");
printf(".");
utf_fprint_printable_ascii(stdout, m->name);
utf_fprint_printable_ascii(stdout, m->descriptor);
- printf("\n\nLength: %d\n\n", (s4) (end - start));
+ printf("\nLength: %d\n\n", (s4) (end - start));
DISASSEMBLE(start, end);
}
The layout of the native stub stackframe should look like this:
- +---------------------------+ <- SP (of parent Java function)
+ +---------------------------+ <- java SP (of parent Java function)
| return address |
- +---------------------------+
+ +---------------------------+ <- data SP
| |
| stackframe info structure |
| |
| |
+---------------------------+
| |
+ | saved registers (if any) |
+ | |
+ +---------------------------+
+ | |
| arguments (if any) |
| |
- +---------------------------+ <- SP (native stub)
+ +---------------------------+ <- current SP (native stub)
*******************************************************************************/
-void codegen_start_native_call(u1 *datasp, u1 *pv, u1 *sp, u1 *ra)
+java_handle_t *codegen_start_native_call(u1 *currentsp, u1 *pv)
{
stackframeinfo *sfi;
localref_table *lrt;
+ codeinfo *code;
+ methodinfo *m;
+ int32_t framesize;
+
+ uint8_t *datasp;
+ uint8_t *javasp;
+ uint8_t *javara;
+ uint64_t *arg_regs;
+ uint64_t *arg_stack;
+
+ STATISTICS(count_calls_java_to_native++);
+
+ /* get information from method header */
+
+ code = *((codeinfo **) (pv + CodeinfoPointer));
+ framesize = *((int32_t *) (pv + FrameSize));
+ assert(code);
+ assert(framesize > sizeof(stackframeinfo) + sizeof(localref_table));
+
+ /* get the methodinfo */
+
+ m = code->m;
+ assert(m);
+
+ /* calculate needed values */
+
+#if defined(__ALPHA__) || defined(__ARM__)
+ datasp = currentsp + framesize - SIZEOF_VOID_P;
+ javasp = currentsp + framesize;
+ javara = *((uint8_t **) datasp);
+ arg_regs = (uint64_t *) currentsp;
+ arg_stack = (uint64_t *) javasp;
+#elif defined(__MIPS__) || defined(__S390__)
+ /* MIPS and S390 always uses 8 bytes to store the RA */
+ datasp = currentsp + framesize - 8;
+ javasp = currentsp + framesize;
+ javara = *((uint8_t **) datasp);
+#elif defined(__I386__) || defined (__M68K__) || defined (__X86_64__)
+ datasp = currentsp + framesize;
+ javasp = currentsp + framesize + SIZEOF_VOID_P;
+ javara = *((uint8_t **) datasp);
+ arg_regs = (uint64_t *) currentsp;
+ arg_stack = (uint64_t *) javasp;
+#elif defined(__POWERPC__) || defined(__POWERPC64__)
+ datasp = currentsp + framesize;
+ javasp = currentsp + framesize;
+ javara = *((uint8_t **) (datasp + LA_LR_OFFSET));
+ arg_regs = (uint64_t *) (currentsp + LA_SIZE + 4 * SIZEOF_VOID_P);
+ arg_stack = (uint64_t *) javasp;
+#else
+ /* XXX is was unable to do this port for SPARC64, sorry. (-michi) */
+ /* XXX maybe we need to pass the RA as argument there */
+ vm_abort("codegen_start_native_call: unsupported architecture");
+#endif
+
+#if !defined(NDEBUG)
+# if defined(__POWERPC__) || defined (__X86_64__)
+ /* print the call-trace if necesarry */
+
+ if (opt_TraceJavaCalls)
+ trace_java_call_enter(m, arg_regs, arg_stack);
+# endif
+#endif
/* get data structures from stack */
lrt = (localref_table *) (datasp - sizeof(stackframeinfo) -
sizeof(localref_table));
- /* add a stackframeinfo to the chain */
+#if defined(ENABLE_JNI)
+ /* add current JNI local references table to this thread */
- stacktrace_create_native_stackframeinfo(sfi, pv, sp, ra);
+ localref_table_add(lrt);
+#endif
-#if defined(ENABLE_JAVASE)
- /* add current JNI local references table to this thread */
+#if defined(ENABLE_HANDLES)
+ /* place all references into the local reference table */
- lrt->capacity = LOCALREFTABLE_CAPACITY;
- lrt->used = 0;
- lrt->localframes = 1;
- lrt->prev = LOCALREFTABLE;
+ localref_fill(m, arg_regs, arg_stack);
+#endif
- /* clear the references array (memset is faster the a for-loop) */
+ /* add a stackframeinfo to the chain */
- MSET(lrt->refs, 0, java_objectheader*, LOCALREFTABLE_CAPACITY);
+ stacktrace_create_native_stackframeinfo(sfi, pv, javasp, javara);
- LOCALREFTABLE = lrt;
-#endif
+ /* return a wrapped classinfo for static native methods */
+
+ if (m->flags & ACC_STATIC)
+ return LLNI_classinfo_wrap(m->class);
+ else
+ return NULL;
}
*******************************************************************************/
-java_objectheader *codegen_finish_native_call(u1 *datasp)
+java_object_t *codegen_finish_native_call(u1 *currentsp, u1 *pv)
{
- stackframeinfo *sfi;
- stackframeinfo **psfi;
- localref_table *lrt;
- localref_table *plrt;
- s4 localframes;
- java_objectheader *e;
-
- /* get data structures from stack */
-
- sfi = (stackframeinfo *) (datasp - sizeof(stackframeinfo));
- lrt = (localref_table *) (datasp - sizeof(stackframeinfo) -
- sizeof(localref_table));
-
- /* remove current stackframeinfo from chain */
-
- psfi = STACKFRAMEINFO;
-
- *psfi = sfi->prev;
+ stackframeinfo *sfi;
+ java_handle_t *e;
+ java_object_t *o;
+ codeinfo *code;
+ methodinfo *m;
+ int32_t framesize;
+
+ uint8_t *datasp;
+ uint64_t *ret_regs;
+
+ /* get information from method header */
+
+ code = *((codeinfo **) (pv + CodeinfoPointer));
+ framesize = *((int32_t *) (pv + FrameSize));
+ assert(code);
+
+ /* get the methodinfo */
+
+ m = code->m;
+ assert(m);
+
+ /* calculate needed values */
+
+#if defined(__ALPHA__) || defined(__ARM__)
+ datasp = currentsp + framesize - SIZEOF_VOID_P;
+ ret_regs = (uint64_t *) currentsp;
+#elif defined(__MIPS__) || defined(__S390__)
+ /* MIPS and S390 always uses 8 bytes to store the RA */
+ datasp = currentsp + framesize - 8;
+#elif defined(__I386__)
+ datasp = currentsp + framesize;
+ ret_regs = (uint64_t *) (currentsp + 2 * SIZEOF_VOID_P);
+#elif defined (__M68K__) || defined (__X86_64__)
+ datasp = currentsp + framesize;
+ ret_regs = (uint64_t *) currentsp;
+#elif defined(__POWERPC__) || defined(__POWERPC64__)
+ datasp = currentsp + framesize;
+ ret_regs = (uint64_t *) (currentsp + LA_SIZE + 2 * SIZEOF_VOID_P);
+#else
+ vm_abort("codegen_finish_native_call: unsupported architecture");
+#endif
-#if defined(ENABLE_JAVASE)
- /* release JNI local references tables for this thread */
- lrt = LOCALREFTABLE;
+#if !defined(NDEBUG)
+# if defined(__POWERPC__) || defined (__X86_64__)
+ /* print the call-trace if necesarry */
- /* release all current local frames */
+ if (opt_TraceJavaCalls)
+ trace_java_call_exit(m, ret_regs);
+# endif
+#endif
- for (localframes = lrt->localframes; localframes >= 1; localframes--) {
- /* get previous frame */
+ /* get data structures from stack */
- plrt = lrt->prev;
+ sfi = (stackframeinfo *) (datasp - sizeof(stackframeinfo));
- /* Clear all reference entries (only for tables allocated on
- the Java heap). */
+ /* remove current stackframeinfo from chain */
- if (localframes > 1)
- MSET(&lrt->refs[0], 0, java_objectheader*, lrt->capacity);
+ stacktrace_remove_stackframeinfo(sfi);
- lrt->prev = NULL;
+ /* XXX unfill lrt here!!! */
- /* set new local references table */
+ /* get and unwrap the exception */
+ /* ATTENTION: do the this _after_ the stackframeinfo was
+ removed but _before_ the localref_table gets removed! */
- lrt = plrt;
- }
+ e = exceptions_get_and_clear_exception();
+ o = LLNI_UNWRAP(e);
- /* now store the previous local frames in the thread structure */
+#if defined(ENABLE_JNI)
+ /* release JNI local references table for this thread */
- LOCALREFTABLE = lrt;
+ localref_frame_pop_all();
+ localref_table_remove();
#endif
- /* get the exception and return it */
-
- e = exceptions_get_and_clear_exception();
-
- return e;
+ return o;
}
spilled) this function returns tempregnum. If not already done,
regoff and flags are set in the stack location.
- On ARM we have to check if a long/double variable is splitted
- across reg/stack (HIGH_REG == REG_SPLIT). We return the actual
- register of v for LOW_REG and the tempregnum for HIGH_REG in such
- cases. (michi 2005/07/24)
-
*******************************************************************************/
s4 codegen_reg_of_var(u2 opcode, varinfo *v, s4 tempregnum)
return tempregnum;
#endif
- if (!(v->flags & INMEMORY)) {
-#if defined(__ARM__) && defined(__ARMEL__)
- if (IS_2_WORD_TYPE(v->type) && (GET_HIGH_REG(v->vv.regoff) == REG_SPLIT))
- return PACK_REGS(GET_LOW_REG(v->vv.regoff),
- GET_HIGH_REG(tempregnum));
-#endif
-#if defined(__ARM__) && defined(__ARMEB__)
- if (IS_2_WORD_TYPE(v->type) && (GET_LOW_REG(v->vv.regoff) == REG_SPLIT))
- return PACK_REGS(GET_LOW_REG(tempregnum),
- GET_HIGH_REG(v->vv.regoff));
-#endif
+ if (!(v->flags & INMEMORY))
return v->vv.regoff;
- }
-
-#if defined(ENABLE_STATISTICS)
- if (opt_stat)
- count_spills_read++;
-#endif
return tempregnum;
}
+
/* codegen_reg_of_dst **********************************************************
This function determines a register, to which the result of an
spilled) this function returns tempregnum. If not already done,
regoff and flags are set in the stack location.
- On ARM we have to check if a long/double variable is splitted
- across reg/stack (HIGH_REG == REG_SPLIT). We return the actual
- register of dst.var for LOW_REG and the tempregnum for HIGH_REG in such
- cases. (michi 2005/07/24)
-
*******************************************************************************/
s4 codegen_reg_of_dst(jitdata *jd, instruction *iptr, s4 tempregnum)
}
-#if defined(ENABLE_THREADS)
-void codegen_threadcritrestart(codegendata *cd, int offset)
-{
- cd->threadcritcurrent.mcoderestart = offset;
-}
+/* codegen_emit_phi_moves ****************************************************
+ Emits phi moves at the end of the basicblock.
-void codegen_threadcritstart(codegendata *cd, int offset)
+*******************************************************************************/
+
+#if defined(ENABLE_SSA)
+void codegen_emit_phi_moves(jitdata *jd, basicblock *bptr)
{
- cd->threadcritcurrent.mcodebegin = offset;
-}
+ int lt_d,lt_s,i;
+ lsradata *ls;
+ codegendata *cd;
+ varinfo *s, *d;
+ instruction tmp_i;
+ cd = jd->cd;
+ ls = jd->ls;
-void codegen_threadcritstop(codegendata *cd, int offset)
-{
- cd->threadcritcurrent.next = cd->threadcrit;
- cd->threadcritcurrent.mcodeend = offset;
- cd->threadcrit = DNEW(codegen_critical_section_t);
- *(cd->threadcrit) = cd->threadcritcurrent;
- cd->threadcritcount++;
-}
+ MCODECHECK(512);
+
+ /* Moves from phi functions with highest indices have to be */
+ /* inserted first, since this is the order as is used for */
+ /* conflict resolution */
+
+ for(i = ls->num_phi_moves[bptr->nr] - 1; i >= 0 ; i--) {
+ lt_d = ls->phi_moves[bptr->nr][i][0];
+ lt_s = ls->phi_moves[bptr->nr][i][1];
+#if defined(SSA_DEBUG_VERBOSE)
+ if (compileverbose)
+ printf("BB %3i Move %3i <- %3i ", bptr->nr, lt_d, lt_s);
+#endif
+ if (lt_s == UNUSED) {
+#if defined(SSA_DEBUG_VERBOSE)
+ if (compileverbose)
+ printf(" ... not processed \n");
#endif
+ continue;
+ }
+
+ d = VAR(ls->lifetime[lt_d].v_index);
+ s = VAR(ls->lifetime[lt_s].v_index);
+
+
+ if (d->type == -1) {
+#if defined(SSA_DEBUG_VERBOSE)
+ if (compileverbose)
+ printf("...returning - phi lifetimes where joined\n");
+#endif
+ return;
+ }
+
+ if (s->type == -1) {
+#if defined(SSA_DEBUG_VERBOSE)
+ if (compileverbose)
+ printf("...returning - phi lifetimes where joined\n");
+#endif
+ return;
+ }
+
+ tmp_i.opc = 0;
+ tmp_i.s1.varindex = ls->lifetime[lt_s].v_index;
+ tmp_i.dst.varindex = ls->lifetime[lt_d].v_index;
+ emit_copy(jd, &tmp_i);
+
+#if defined(SSA_DEBUG_VERBOSE)
+ if (compileverbose) {
+ if (IS_INMEMORY(d->flags) && IS_INMEMORY(s->flags)) {
+ /* mem -> mem */
+ printf("M%3i <- M%3i",d->vv.regoff,s->vv.regoff);
+ }
+ else if (IS_INMEMORY(s->flags)) {
+ /* mem -> reg */
+ printf("R%3i <- M%3i",d->vv.regoff,s->vv.regoff);
+ }
+ else if (IS_INMEMORY(d->flags)) {
+ /* reg -> mem */
+ printf("M%3i <- R%3i",d->vv.regoff,s->vv.regoff);
+ }
+ else {
+ /* reg -> reg */
+ printf("R%3i <- R%3i",d->vv.regoff,s->vv.regoff);
+ }
+ printf("\n");
+ }
+#endif /* defined(SSA_DEBUG_VERBOSE) */
+ }
+}
+#endif /* defined(ENABLE_SSA) */
+
/*
projects / cacao.git / blobdiff