-/* vm/jit/code.c - codeinfo struct for representing compiled code
+/* src/vm/jit/code.c - codeinfo struct for representing compiled code
- 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: Edwin Steiner
- Changes:
+#include "config.h"
- $Id$
+#include <assert.h>
-*/
+#include "vm/types.h"
+#include "arch.h"
-#include "config.h"
-#include "vm/types.h"
+#include "mm/memory.h"
-#include <assert.h>
+#if defined(ENABLE_THREADS)
+# include "threads/native/lock.h"
+#endif
#include "vm/jit/code.h"
-#include "mm/memory.h"
-#include "vm/options.h"
-#include "arch.h"
+#include "vm/jit/codegen-common.h"
+#include "vm/jit/methodheader.h"
+#include "vm/jit/patcher-common.h"
+
+#include "vmcore/options.h"
+
+
+/* code_init *******************************************************************
+
+ Initialize the code-subsystem.
+
+*******************************************************************************/
+
+bool code_init(void)
+{
+ /* check for offset of code->m == 0 (see comment in code.h) */
+
+ assert(OFFSET(codeinfo, m) == 0);
+
+ /* everything's ok */
+
+ return true;
+}
+
/* code_codeinfo_new ***********************************************************
The following fields are set in codeinfo:
m
- isleafmethod
- all other fields are zeroed
+ patchers
RETURN VALUE:
a new, initialized codeinfo, or
code = NEW(codeinfo);
- memset(code,0,sizeof(codeinfo));
-
code->m = m;
- code->isleafmethod = m->isleafmethod; /* XXX will be moved to codeinfo */
-
+
+ patcher_list_create(code);
+
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ size_codeinfo += sizeof(codeinfo);
+#endif
+
return code;
}
+
+/* code_find_codeinfo_for_pc ***************************************************
+
+ Return the codeinfo for the compilation unit that contains the
+ given PC.
+
+ IN:
+ pc...............machine code position
+
+ RETURN VALUE:
+ the codeinfo * for the given PC
+
+*******************************************************************************/
+
+codeinfo *code_find_codeinfo_for_pc(u1 *pc)
+{
+ u1 *pv;
+
+ pv = codegen_get_pv_from_pc(pc);
+ assert(pv);
+
+ return *(codeinfo **)(pv + CodeinfoPointer);
+}
+
+
+/* code_get_methodinfo_for_pv **************************************************
+
+ Return the methodinfo for the given PV.
+
+ IN:
+ pv...............PV
+
+ RETURN VALUE:
+ the methodinfo *
+
+*******************************************************************************/
+
+methodinfo *code_get_methodinfo_for_pv(u1 *pv)
+{
+ codeinfo *code;
+
+ code = *((codeinfo **) (pv + CodeinfoPointer));
+
+ return code->m;
+}
+
+
/* code_get_sync_slot_count ****************************************************
Return the number of stack slots used for storing the synchronized object
- (and the return value around monitorExit calls) by the given code.
+ (and the return value around lock_monitor_exit calls) by the given code.
IN:
code.............the codeinfo of the code in question
*******************************************************************************/
+#if defined(ENABLE_REPLACEMENT)
int code_get_sync_slot_count(codeinfo *code)
{
-#ifdef USE_THREADS
+#ifdef ENABLE_THREADS
int count;
assert(code);
return count;
-#else /* !USE_THREADS */
+#else /* !ENABLE_THREADS */
return 0;
-#endif /* USE_THREADS */
+#endif /* ENABLE_THREADS */
}
+#endif /* defined(ENABLE_REPLACEMENT) */
-/* code_get_stack_frame_size ***************************************************
-
- Return the number of stack slots that the stack frame of the given code
- comprises.
-
- IMPORTANT: The return value does *not* include the saved return address
- slot, although it is part of non-leaf stack frames on RISC
- architectures. The rationale behind this is that the saved
- return address is never moved or changed by replacement, and
- this way CISC and RISC architectures can be treated the same.
- (See also doc/stack_frames.txt.)
-
- IN:
- code.............the codeinfo of the code in question
- (must be != NULL)
-
- RETURN VALUE:
- the number of stack slots
-
-*******************************************************************************/
-
-int code_get_stack_frame_size(codeinfo *code)
-{
- int count;
-
- assert(code);
-
-#ifdef HAS_4BYTE_STACKSLOT
- count = code->memuse + code->savedintcount + 2*code->savedfltcount;
-#else
- count = code->memuse + code->savedintcount + code->savedfltcount;
-#endif
-
- /* add slots needed in synchronized methods */
- count += code_get_sync_slot_count(code);
-
-#if defined(__X86_64__)
- /* keep stack 16-byte aligned */
- if (!code->isleafmethod || opt_verbosecall)
- count |= 1; /* even when return address is added */
-#endif
-
-#if defined(__POWERPC__)
- /* keep stack 16-byte aligned */
- count = (count + 3) & ~3;
-#endif
-
- return count;
-}
/* code_codeinfo_free **********************************************************
void code_codeinfo_free(codeinfo *code)
{
- if (!code)
+ if (code == NULL)
return;
- if (code->mcode)
+ if (code->mcode != NULL)
CFREE((void *) (ptrint) code->mcode, code->mcodelength);
+ patcher_list_free(code);
+
+#if defined(ENABLE_REPLACEMENT)
replace_free_replacement_points(code);
+#endif
+
+ FREE(code, codeinfo);
- FREE(code,codeinfo);
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ size_codeinfo -= sizeof(codeinfo);
+#endif
}
+
/* code_free_code_of_method ****************************************************
Free all codeinfos of the given method
projects / cacao.git / blobdiff