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valgrind.10613
jit-register-unregister.diff
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File jit-register-unregister.diff of Package valgrind.10613
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
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