/* Handle JIT code generation in the inferior for GDB, the GNU Debugger.
- Copyright (C) 2009-2015 Free Software Foundation, Inc.
+ Copyright (C) 2009-2016 Free Software Foundation, Inc.
This file is part of GDB.
#include "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 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);
/* An unwinder is registered for every gdbarch. This key is used to
remember if the unwinder has been registered for a particular
so = gdb_dlopen (file_name);
old_cleanups = make_cleanup_dlclose (so);
- init_fn = gdb_dlsym (so, reader_init_fn_sym);
+ init_fn = (reader_init_fn_type *) gdb_dlsym (so, reader_init_fn_sym);
if (!init_fn)
error (_("Could not locate initialization function: %s."),
reader_init_fn_sym);
if (args == NULL)
error (_("No reader name provided."));
+ args = tilde_expand (args);
+ prev_cleanup = make_cleanup (xfree, args);
if (loaded_jit_reader != NULL)
error (_("JIT reader already loaded. Run jit-reader-unload first."));
if (IS_ABSOLUTE_PATH (args))
- so_name = xstrdup (args);
+ so_name = args;
else
- so_name = xstrprintf ("%s%s%s", jit_reader_dir, SLASH_STRING, args);
- prev_cleanup = make_cleanup (xfree, so_name);
+ {
+ so_name = xstrprintf ("%s%s%s", jit_reader_dir, SLASH_STRING, args);
+ make_cleanup (xfree, so_name);
+ }
loaded_jit_reader = jit_reader_load (so_name);
+ reinit_frame_cache ();
+ jit_inferior_created_hook ();
do_cleanups (prev_cleanup);
}
if (!loaded_jit_reader)
error (_("No JIT reader loaded."));
+ reinit_frame_cache ();
+ jit_inferior_exit_hook (current_inferior ());
loaded_jit_reader->functions->destroy (loaded_jit_reader->functions);
gdb_dlclose (loaded_jit_reader->handle);
{
struct jit_objfile_data *objf_data;
- objf_data = objfile_data (objf, jit_objfile_data);
+ objf_data = (struct jit_objfile_data *) objfile_data (objf, jit_objfile_data);
if (objf_data == NULL)
{
objf_data = XCNEW (struct jit_objfile_data);
{
struct jit_program_space_data *ps_data;
- ps_data = program_space_data (current_program_space, jit_program_space_data);
+ ps_data
+ = ((struct jit_program_space_data *)
+ program_space_data (current_program_space, jit_program_space_data));
if (ps_data == NULL)
{
ps_data = XCNEW (struct jit_program_space_data);
static enum gdb_status
jit_target_read_impl (GDB_CORE_ADDR target_mem, void *gdb_buf, int len)
{
- int result = target_read_memory ((CORE_ADDR) target_mem, gdb_buf, len);
+ int result = target_read_memory ((CORE_ADDR) target_mem,
+ (gdb_byte *) gdb_buf, len);
if (result == 0)
return GDB_SUCCESS;
else
struct objfile *objfile;
jit_dbg_reader_data *priv_data;
- priv_data = cb->priv_data;
+ priv_data = (jit_dbg_reader_data *) cb->priv_data;
objfile = allocate_objfile (NULL, "<< JIT compiled code >>",
OBJF_NOT_FILENAME);
jit_reader_try_read_symtab (struct jit_code_entry *code_entry,
CORE_ADDR entry_addr)
{
- void *gdb_mem;
+ gdb_byte *gdb_mem;
int status;
jit_dbg_reader_data priv_data;
struct gdb_reader_funcs *funcs;
if (!loaded_jit_reader)
return 0;
- gdb_mem = xmalloc (code_entry->symfile_size);
+ gdb_mem = (gdb_byte *) xmalloc (code_entry->symfile_size);
status = 1;
TRY
{
struct jit_objfile_data *objf_data;
- objf_data = objfile_data (objf, jit_objfile_data);
+ objf_data
+ = (struct jit_objfile_data *) objfile_data (objf, jit_objfile_data);
if (objf_data != NULL && objf_data->addr == entry_addr)
return objf;
}
{
struct jit_program_space_data *ps_data;
- ps_data = program_space_data (iter->pspace, jit_program_space_data);
+ ps_data = ((struct jit_program_space_data *)
+ program_space_data (iter->pspace, jit_program_space_data));
if (ps_data != NULL && ps_data->jit_breakpoint == iter->owner)
{
ps_data->cached_code_address = 0;
}
/* (Re-)Initialize the jit breakpoint if necessary.
- Return 0 on success. */
+ Return 0 if the jit breakpoint has been successfully initialized. */
static int
jit_breakpoint_re_set_internal (struct gdbarch *gdbarch,
paddress (gdbarch, addr));
if (ps_data->cached_code_address == addr)
- return 1;
+ return 0;
/* Delete the old breakpoint. */
if (ps_data->jit_breakpoint != NULL)
{
/* Cached register values. See jit_frame_sniffer to see how this
works. */
- struct gdb_reg_value **registers;
+ struct regcache *regcache;
/* The frame being unwound. */
struct frame_info *this_frame;
struct jit_unwind_private *priv;
int gdb_reg;
- priv = cb->priv_data;
+ priv = (struct jit_unwind_private *) cb->priv_data;
gdb_reg = gdbarch_dwarf2_reg_to_regnum (get_frame_arch (priv->this_frame),
dwarf_regnum);
fprintf_unfiltered (gdb_stdlog,
_("Could not recognize DWARF regnum %d"),
dwarf_regnum);
+ value->free (value);
return;
}
- gdb_assert (priv->registers);
- priv->registers[gdb_reg] = value;
+ regcache_raw_set_cached_value (priv->regcache, gdb_reg, value->value);
+ value->free (value);
}
static void
int gdb_reg, size;
struct gdbarch *frame_arch;
- priv = cb->priv_data;
+ priv = (struct jit_unwind_private *) cb->priv_data;
frame_arch = get_frame_arch (priv->this_frame);
gdb_reg = gdbarch_dwarf2_reg_to_regnum (frame_arch, regnum);
static void
jit_dealloc_cache (struct frame_info *this_frame, void *cache)
{
- struct jit_unwind_private *priv_data = cache;
- struct gdbarch *frame_arch;
- int i;
+ struct jit_unwind_private *priv_data = (struct jit_unwind_private *) cache;
- gdb_assert (priv_data->registers);
- frame_arch = get_frame_arch (priv_data->this_frame);
-
- for (i = 0; i < gdbarch_num_regs (frame_arch); i++)
- if (priv_data->registers[i] && priv_data->registers[i]->free)
- priv_data->registers[i]->free (priv_data->registers[i]);
-
- xfree (priv_data->registers);
+ gdb_assert (priv_data->regcache != NULL);
+ regcache_xfree (priv_data->regcache);
xfree (priv_data);
}
struct jit_unwind_private *priv_data;
struct gdb_unwind_callbacks callbacks;
struct gdb_reader_funcs *funcs;
+ struct address_space *aspace;
+ struct gdbarch *gdbarch;
callbacks.reg_get = jit_unwind_reg_get_impl;
callbacks.reg_set = jit_unwind_reg_set_impl;
gdb_assert (!*cache);
+ aspace = get_frame_address_space (this_frame);
+ gdbarch = get_frame_arch (this_frame);
+
*cache = XCNEW (struct jit_unwind_private);
- priv_data = *cache;
- priv_data->registers =
- XCNEWVEC (struct gdb_reg_value *,
- gdbarch_num_regs (get_frame_arch (this_frame)));
+ priv_data = (struct jit_unwind_private *) *cache;
+ priv_data->regcache = regcache_xmalloc (gdbarch, aspace);
priv_data->this_frame = this_frame;
callbacks.priv_data = priv_data;
struct gdb_reader_funcs *funcs;
struct gdb_unwind_callbacks callbacks;
- priv.registers = NULL;
+ priv.regcache = NULL;
priv.this_frame = this_frame;
/* We don't expect the frame_id function to set any registers, so we
static struct value *
jit_frame_prev_register (struct frame_info *this_frame, void **cache, int reg)
{
- struct jit_unwind_private *priv = *cache;
- struct gdb_reg_value *value;
+ struct jit_unwind_private *priv = (struct jit_unwind_private *) *cache;
+ struct gdbarch *gdbarch;
if (priv == NULL)
return frame_unwind_got_optimized (this_frame, reg);
- gdb_assert (priv->registers);
- value = priv->registers[reg];
- if (value && value->defined)
- return frame_unwind_got_bytes (this_frame, reg, value->value);
+ gdbarch = get_regcache_arch (priv->regcache);
+ if (reg < gdbarch_num_regs (gdbarch))
+ {
+ gdb_byte *buf = (gdb_byte *) alloca (register_size (gdbarch, reg));
+ enum register_status status;
+
+ status = regcache_raw_read (priv->regcache, reg, buf);
+ if (status == REG_VALID)
+ return frame_unwind_got_bytes (this_frame, reg, buf);
+ else
+ return frame_unwind_got_optimized (this_frame, reg);
+ }
else
- return frame_unwind_got_optimized (this_frame, reg);
+ return gdbarch_pseudo_register_read_value (gdbarch, priv->regcache, reg);
}
/* Relay everything back to the unwinder registered by the JIT debug
{
struct jit_gdbarch_data_type *data;
- data = gdbarch_data (gdbarch, jit_gdbarch_data);
+ data
+ = (struct jit_gdbarch_data_type *) gdbarch_data (gdbarch, jit_gdbarch_data);
if (!data->unwinder_registered)
{
frame_unwind_prepend_unwinder (gdbarch, &jit_frame_unwind);
}
}
+/* inferior_created observer. */
+
+static void
+jit_inferior_created (struct target_ops *ops, int from_tty)
+{
+ jit_inferior_created_hook ();
+}
+
/* Exported routine to call when an inferior has been created. */
void
ALL_OBJFILES_SAFE (objf, temp)
{
- struct jit_objfile_data *objf_data = objfile_data (objf,
- jit_objfile_data);
+ struct jit_objfile_data *objf_data
+ = (struct jit_objfile_data *) objfile_data (objf, jit_objfile_data);
if (objf_data != NULL && objf_data->addr != 0)
jit_unregister_code (objf);
static void
free_objfile_data (struct objfile *objfile, void *data)
{
- struct jit_objfile_data *objf_data = data;
+ struct jit_objfile_data *objf_data = (struct jit_objfile_data *) data;
if (objf_data->register_code != NULL)
{
struct jit_program_space_data *ps_data;
- ps_data = program_space_data (objfile->pspace, jit_program_space_data);
+ ps_data
+ = ((struct jit_program_space_data *)
+ program_space_data (objfile->pspace, jit_program_space_data));
if (ps_data != NULL && ps_data->objfile == objfile)
ps_data->objfile = NULL;
}
show_jit_debug,
&setdebuglist, &showdebuglist);
+ observer_attach_inferior_created (jit_inferior_created);
observer_attach_inferior_exit (jit_inferior_exit_hook);
observer_attach_breakpoint_deleted (jit_breakpoint_deleted);
jit_gdbarch_data = gdbarch_data_register_pre_init (jit_gdbarch_data_init);
if (is_dl_available ())
{
- add_com ("jit-reader-load", no_class, jit_reader_load_command, _("\
+ struct cmd_list_element *c;
+
+ c = add_com ("jit-reader-load", no_class, jit_reader_load_command, _("\
Load FILE as debug info reader and unwinder for JIT compiled code.\n\
Usage: jit-reader-load FILE\n\
Try to load file FILE as a debug info reader (and unwinder) for\n\
JIT compiled code. The file is loaded from " JIT_READER_DIR ",\n\
relocated relative to the GDB executable if required."));
- add_com ("jit-reader-unload", no_class, jit_reader_unload_command, _("\
+ set_cmd_completer (c, filename_completer);
+
+ c = add_com ("jit-reader-unload", no_class,
+ jit_reader_unload_command, _("\
Unload the currently loaded JIT debug info reader.\n\
-Usage: jit-reader-unload FILE\n\n\
+Usage: jit-reader-unload\n\n\
Do \"help jit-reader-load\" for info on loading debug info readers."));
+ set_cmd_completer (c, noop_completer);
}
}
projects / binutils-gdb.git / blobdiff