File jit-register-unregister.diff of Package valgrind.11355
Index: coregrind/m_debuginfo/debuginfo.c
===================================================================
--- coregrind/m_debuginfo/debuginfo.c.orig
+++ coregrind/m_debuginfo/debuginfo.c
@@ -49,6 +49,7 @@
#include "pub_core_oset.h"
#include "pub_core_stacktrace.h" // VG_(get_StackTrace) XXX: circular dependency
#include "pub_core_ume.h"
+#include "pub_core_mallocfree.h"
#include "priv_misc.h" /* dinfo_zalloc/free */
#include "priv_image.h"
@@ -1430,6 +1431,132 @@ void VG_(di_notify_pdb_debuginfo)( Int f
#endif /* defined(VGO_linux) || defined(VGO_darwin) || defined(VGO_solaris) */
+/* Storing and retrieving information caused by JITted code. TODO:
+ move somewhere more suitable. */
+
+typedef
+ struct {
+ Char *name;
+ Addr start, end;
+ }
+ JitEntry;
+
+static JitEntry *jit_entries;
+static Int jit_entries_size;
+static Int jit_entry_count;
+
+#define JITSYMS_START_SIZE 128
+#define JITSYMS_INCREMENT 64
+
+void VG_(register_jited_code) ( Char *name, Addr start, SizeT len)
+{
+ Int l, u, mid, slot, j;
+ JitEntry* e = NULL;
+
+ if (jit_entry_count + 1 >= jit_entries_size) {
+ if (jit_entries == NULL) {
+ jit_entries = VG_(arena_calloc)(
+ VG_AR_DINFO, "jit-register",
+ JITSYMS_START_SIZE, sizeof(JitEntry)
+ );
+ jit_entries_size = JITSYMS_START_SIZE;
+ } else {
+ jit_entries = VG_(arena_realloc)(
+ VG_AR_DINFO, "jit-register", jit_entries,
+ (jit_entries_size + JITSYMS_INCREMENT)
+ * sizeof(JitEntry)
+ );
+ jit_entries_size += JITSYMS_INCREMENT;
+ }
+ }
+ l = 0;
+ u = jit_entry_count;
+ while (l < u) {
+ mid = (l + u) / 2;
+ e = &jit_entries [mid];
+ if (e->start < start) {
+ l = mid + 1;
+ } else if (e->start > start) {
+ u = mid;
+ } else
+ break;
+ }
+ if (e == NULL) {
+ if (jit_entry_count != 0) {
+ /* this would be an error */
+ }
+ slot = 0;
+ } else if (e->start < start)
+ slot = mid + 1;
+ else
+ slot = mid;
+
+ if (e != NULL) {
+ for (j = jit_entry_count; j > mid+1; j--)
+ jit_entries [j] = jit_entries [j-1];
+ }
+
+ jit_entries [slot].name = VG_(strdup)("jit-register", name);
+ jit_entries [slot].start = start;
+ jit_entries [slot].end = start + len;
+ jit_entry_count++;
+}
+
+void VG_(unregister_jited_code) ( Addr start )
+{
+ Int l, u, mid;
+ JitEntry* e = NULL;
+
+ l = 0;
+ u = jit_entry_count;
+ while (l < u) {
+ mid = (l + u) / 2;
+ e = &jit_entries [mid];
+
+ if (e->start < start) {
+ l = mid + 1;
+ } else if (e->start > start) {
+ u = mid;
+ } else {
+ break;
+ }
+ }
+ if (e != NULL && start == e->start){
+ Int j;
+ VG_(free)(e->name);
+ for (j = mid + 1; j < jit_entry_count; j++)
+ jit_entries [j-1] = jit_entries [j];
+ }
+}
+
+static
+JitEntry* jit_lookup ( Addr pc, Char* buf, Int nbuf )
+{
+ Int l, u, mid;
+ JitEntry* e = NULL;
+
+ l = 0;
+ u = jit_entry_count;
+ while (l < u) {
+ mid = (l + u) / 2;
+ e = &jit_entries [mid];
+
+ if (e->end < pc) {
+ l = mid + 1;
+ } else if (e->start > pc) {
+ u = mid;
+ } else {
+ break;
+ }
+ }
+ if (e != NULL && pc >= e->start && pc < e->end){
+ VG_(strncpy_safely)(buf, e->name, nbuf);
+ return e;
+ }
+ return NULL;
+}
+
+
/*------------------------------------------------------------*/
/*--- ---*/
/*--- TOP LEVEL: QUERYING EXISTING DEBUG INFO ---*/
@@ -1755,8 +1882,18 @@ Bool get_sym_name ( Bool do_cxx_demangli
PtrdiffT offset;
search_all_symtabs ( a, &di, &sno, match_anywhere_in_sym, findText );
- if (di == NULL) {
+ if (di == NULL)
+ {
*buf = "";
+ if (findText)
+ {
+ JitEntry* je = jit_lookup (a, buf, nbuf);
+ if (!je)
+ return False;
+ if (offsetP)
+ *offsetP = a - je->start;
+ return True;
+ }
return False;
}
Index: coregrind/m_scheduler/scheduler.c
===================================================================
--- coregrind/m_scheduler/scheduler.c.orig
+++ coregrind/m_scheduler/scheduler.c
@@ -2087,6 +2087,16 @@ void do_client_request ( ThreadId tid )
LibVEX_InitIRI ( (IRICB *)arg[1] );
break;
+ case VG_USERREQ__JIT_REGISTER_MAP:
+ VG_(register_jited_code)( (Char*)arg[1], arg[2], arg[3] );
+ SET_CLREQ_RETVAL( tid, 0 ); /* return value is meaningless */
+ break;
+
+ case VG_USERREQ__JIT_UNREGISTER_MAP:
+ VG_(unregister_jited_code)( arg[1] );
+ SET_CLREQ_RETVAL( tid, 0 ); /* return value is meaningless */
+ break;
+
default:
my_default:
if (os_client_request(tid, arg)) {
Index: coregrind/pub_core_debuginfo.h
===================================================================
--- coregrind/pub_core_debuginfo.h.orig
+++ coregrind/pub_core_debuginfo.h
@@ -101,6 +101,12 @@ Bool VG_(get_fnname_no_cxx_demangle) ( A
extern
Bool VG_(get_inst_offset_in_function)( Addr a, /*OUT*/PtrdiffT* offset );
+/* Register/deregister symbols created by JITs. */
+extern
+void VG_(register_jited_code)( Char* name, Addr start, SizeT len );
+
+extern
+void VG_(unregister_jited_code)( Addr start );
/* Use DWARF2/3 CFA information to do one step of stack unwinding.
D3UnwindRegs holds the current register values, and is
Index: include/valgrind.h
===================================================================
--- include/valgrind.h.orig
+++ include/valgrind.h
@@ -6706,6 +6706,10 @@ typedef
/* Querying of debug info. */
VG_USERREQ__MAP_IP_TO_SRCLOC = 0x1701,
+ /* JIT support */
+ VG_USERREQ__JIT_REGISTER_MAP = 0x1702,
+ VG_USERREQ__JIT_UNREGISTER_MAP = 0x1703,
+
/* Disable/enable error reporting level. Takes a single
Word arg which is the delta to this thread's error
disablement indicator. Hence 1 disables or further
@@ -6873,6 +6877,19 @@ VALGRIND_PRINTF_BACKTRACE(const char *fo
_qyy_arg1, _qyy_arg2, \
_qyy_arg3, 0)
+#define VALGRIND_JIT_REGISTER_MAP(name, start, end) \
+ {unsigned int _qzz_res; \
+ VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
+ VG_USERREQ__JIT_REGISTER_MAP, \
+ name, start, end, 0, 0); \
+ }
+
+#define VALGRIND_JIT_UNREGISTER_MAP(name, start) \
+ {unsigned int _qzz_res; \
+ VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
+ VG_USERREQ__JIT_REGISTER_MAP, \
+ start, 0, 0, 0, 0); \
+ }
/* Counts the number of errors that have been recorded by a tool. Nb:
the tool must record the errors with VG_(maybe_record_error)() or
