Replace xmalloc/xfree with vector in jit.c
[deliverable/binutils-gdb.git] / gdb / jit.c
index 1f87bf2538d010f160b0a5af4ef7b5e8ddf5a765..b6e51e4f8b4dc45aababed6d5ed5b7c20edddb3c 100644 (file)
--- a/gdb/jit.c
+++ b/gdb/jit.c
 #include "symfile.h"
 #include "symtab.h"
 #include "target.h"
-#include "gdb-dlfcn.h"
+#include "gdbsupport/gdb-dlfcn.h"
 #include <sys/stat.h>
 #include "gdb_bfd.h"
 #include "readline/tilde.h"
 #include "completer.h"
 
-static const char *jit_reader_dir = NULL;
+static std::string jit_reader_dir;
 
 static const struct objfile_data *jit_objfile_data;
 
@@ -50,8 +50,6 @@ static const char *const jit_break_name = "__jit_debug_register_code";
 
 static const char *const jit_descriptor_name = "__jit_debug_descriptor";
 
-static const struct program_space_data *jit_program_space_data = NULL;
-
 static void jit_inferior_init (struct gdbarch *gdbarch);
 static void jit_inferior_exit_hook (struct inferior *inf);
 
@@ -78,7 +76,7 @@ struct target_buffer
   ULONGEST size;
 };
 
-/* Openning the file is a no-op.  */
+/* Opening the file is a no-op.  */
 
 static void *
 mem_bfd_iovec_open (struct bfd *abfd, void *open_closure)
@@ -218,7 +216,7 @@ jit_reader_load_command (const char *args, int from_tty)
     error (_("JIT reader already loaded.  Run jit-reader-unload first."));
 
   if (!IS_ABSOLUTE_PATH (file.get ()))
-    file.reset (xstrprintf ("%s%s%s", jit_reader_dir, SLASH_STRING,
+    file.reset (xstrprintf ("%s%s%s", jit_reader_dir.c_str (), SLASH_STRING,
                            file.get ()));
 
   loaded_jit_reader = jit_reader_load (file.get ());
@@ -249,20 +247,22 @@ struct jit_program_space_data
   /* The objfile.  This is NULL if no objfile holds the JIT
      symbols.  */
 
-  struct objfile *objfile;
+  struct objfile *objfile = nullptr;
 
   /* If this program space has __jit_debug_register_code, this is the
      cached address from the minimal symbol.  This is used to detect
      relocations requiring the breakpoint to be re-created.  */
 
-  CORE_ADDR cached_code_address;
+  CORE_ADDR cached_code_address = 0;
 
   /* This is the JIT event breakpoint, or NULL if it has not been
      set.  */
 
-  struct breakpoint *jit_breakpoint;
+  struct breakpoint *jit_breakpoint = nullptr;
 };
 
+static program_space_key<jit_program_space_data> jit_program_space_key;
+
 /* Per-objfile structure recording the addresses in the program space.
    This object serves two purposes: for ordinary objfiles, it may
    cache some symbols related to the JIT interface; and for
@@ -316,29 +316,16 @@ add_objfile_entry (struct objfile *objfile, CORE_ADDR entry)
    if not already present.  */
 
 static struct jit_program_space_data *
-get_jit_program_space_data (void)
+get_jit_program_space_data ()
 {
   struct jit_program_space_data *ps_data;
 
-  ps_data
-    = ((struct jit_program_space_data *)
-       program_space_data (current_program_space, jit_program_space_data));
+  ps_data = jit_program_space_key.get (current_program_space);
   if (ps_data == NULL)
-    {
-      ps_data = XCNEW (struct jit_program_space_data);
-      set_program_space_data (current_program_space, jit_program_space_data,
-                             ps_data);
-    }
-
+    ps_data = jit_program_space_key.emplace (current_program_space);
   return ps_data;
 }
 
-static void
-jit_program_space_data_cleanup (struct program_space *ps, void *arg)
-{
-  xfree (arg);
-}
-
 /* Helper function for reading the global JIT descriptor from remote
    memory.  Returns 1 if all went well, 0 otherwise.  */
 
@@ -713,10 +700,8 @@ finalize_symtab (struct gdb_symtab *stab, struct objfile *objfile)
       SYMBOL_TYPE (block_name) = lookup_function_type (block_type);
       SYMBOL_BLOCK_VALUE (block_name) = new_block;
 
-      block_name->ginfo.name
-       = (const char *) obstack_copy0 (&objfile->objfile_obstack,
-                                       gdb_block_iter->name,
-                                       strlen (gdb_block_iter->name));
+      block_name->name = obstack_strdup (&objfile->objfile_obstack,
+                                        gdb_block_iter->name);
 
       BLOCK_FUNCTION (new_block) = block_name;
 
@@ -823,7 +808,6 @@ static int
 jit_reader_try_read_symtab (struct jit_code_entry *code_entry,
                             CORE_ADDR entry_addr)
 {
-  gdb_byte *gdb_mem;
   int status;
   jit_dbg_reader_data priv_data;
   struct gdb_reader_funcs *funcs;
@@ -846,30 +830,29 @@ jit_reader_try_read_symtab (struct jit_code_entry *code_entry,
   if (!loaded_jit_reader)
     return 0;
 
-  gdb_mem = (gdb_byte *) xmalloc (code_entry->symfile_size);
+  gdb::byte_vector gdb_mem (code_entry->symfile_size);
 
   status = 1;
-  TRY
+  try
     {
-      if (target_read_memory (code_entry->symfile_addr, gdb_mem,
+      if (target_read_memory (code_entry->symfile_addr, gdb_mem.data (),
                              code_entry->symfile_size))
        status = 0;
     }
-  CATCH (e, RETURN_MASK_ALL)
+  catch (const gdb_exception &e)
     {
       status = 0;
     }
-  END_CATCH
 
   if (status)
     {
       funcs = loaded_jit_reader->functions;
-      if (funcs->read (funcs, &callbacks, gdb_mem, code_entry->symfile_size)
+      if (funcs->read (funcs, &callbacks, gdb_mem.data (),
+                      code_entry->symfile_size)
           != GDB_SUCCESS)
         status = 0;
     }
 
-  xfree (gdb_mem);
   if (jit_debug && status == 0)
     fprintf_unfiltered (gdb_stdlog,
                         "Could not read symtab using the loaded JIT reader.\n");
@@ -890,7 +873,7 @@ jit_bfd_try_read_symtab (struct jit_code_entry *code_entry,
 
   if (jit_debug)
     fprintf_unfiltered (gdb_stdlog,
-                       "jit_register_code, symfile_addr = %s, "
+                       "jit_bfd_try_read_symtab, symfile_addr = %s, "
                        "symfile_size = %s\n",
                        paddress (gdbarch, code_entry->symfile_addr),
                        pulongest (code_entry->symfile_size));
@@ -926,12 +909,12 @@ JITed symbol file is not an object file, ignoring it.\n"));
      addresses that we care about.  */
   section_addr_info sai;
   for (sec = nbfd->sections; sec != NULL; sec = sec->next)
-    if ((bfd_get_section_flags (nbfd.get (), sec) & (SEC_ALLOC|SEC_LOAD)) != 0)
+    if ((bfd_section_flags (sec) & (SEC_ALLOC|SEC_LOAD)) != 0)
       {
         /* We assume that these virtual addresses are absolute, and do not
            treat them as offsets.  */
-       sai.emplace_back (bfd_get_section_vma (nbfd.get (), sec),
-                         bfd_get_section_name (nbfd.get (), sec),
+       sai.emplace_back (bfd_section_vma (sec),
+                         bfd_section_name (sec),
                          sec->index);
       }
 
@@ -974,6 +957,9 @@ jit_register_code (struct gdbarch *gdbarch,
 static void
 jit_unregister_code (struct objfile *objfile)
 {
+  if (jit_debug)
+    fprintf_unfiltered (gdb_stdlog, "jit_unregister_code (%s)\n",
+                       host_address_to_string (objfile));
   delete objfile;
 }
 
@@ -1009,8 +995,7 @@ jit_breakpoint_deleted (struct breakpoint *b)
     {
       struct jit_program_space_data *ps_data;
 
-      ps_data = ((struct jit_program_space_data *)
-                program_space_data (iter->pspace, jit_program_space_data));
+      ps_data = jit_program_space_key.get (iter->pspace);
       if (ps_data != NULL && ps_data->jit_breakpoint == iter->owner)
        {
          ps_data->cached_code_address = 0;
@@ -1449,9 +1434,7 @@ free_objfile_data (struct objfile *objfile, void *data)
     {
       struct jit_program_space_data *ps_data;
 
-      ps_data
-       = ((struct jit_program_space_data *)
-          program_space_data (objfile->pspace, jit_program_space_data));
+      ps_data = jit_program_space_key.get (objfile->pspace);
       if (ps_data != NULL && ps_data->objfile == objfile)
        {
          ps_data->objfile = NULL;
@@ -1497,9 +1480,6 @@ _initialize_jit (void)
 
   jit_objfile_data =
     register_objfile_data_with_cleanup (NULL, free_objfile_data);
-  jit_program_space_data =
-    register_program_space_data_with_cleanup (NULL,
-                                             jit_program_space_data_cleanup);
   jit_gdbarch_data = gdbarch_data_register_pre_init (jit_gdbarch_data_init);
   if (is_dl_available ())
     {
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