/* Cache and manage frames for GDB, the GNU debugger.
- Copyright (C) 1986-2016 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
*unavailablep = !value_entirely_available (value);
*lvalp = VALUE_LVAL (value);
*addrp = value_address (value);
- *realnump = VALUE_REGNUM (value);
+ if (*lvalp == lval_register)
+ *realnump = VALUE_REGNUM (value);
+ else
+ *realnump = -1;
if (bufferp)
{
struct gdbarch *gdbarch = frame_unwind_arch (frame);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int size = register_size (gdbarch, regnum);
- gdb_byte buf[MAX_REGISTER_SIZE];
+ struct value *value = frame_unwind_register_value (frame, regnum);
+
+ gdb_assert (value != NULL);
+
+ if (value_optimized_out (value))
+ {
+ throw_error (OPTIMIZED_OUT_ERROR,
+ _("Register %d was not saved"), regnum);
+ }
+ if (!value_entirely_available (value))
+ {
+ throw_error (NOT_AVAILABLE_ERROR,
+ _("Register %d is not available"), regnum);
+ }
+
+ LONGEST r = extract_signed_integer (value_contents_all (value), size,
+ byte_order);
- frame_unwind_register (frame, regnum, buf);
- return extract_signed_integer (buf, size, byte_order);
+ release_value (value);
+ value_free (value);
+ return r;
}
LONGEST
struct gdbarch *gdbarch = frame_unwind_arch (frame);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int size = register_size (gdbarch, regnum);
- gdb_byte buf[MAX_REGISTER_SIZE];
+ struct value *value = frame_unwind_register_value (frame, regnum);
- frame_unwind_register (frame, regnum, buf);
- return extract_unsigned_integer (buf, size, byte_order);
+ gdb_assert (value != NULL);
+
+ if (value_optimized_out (value))
+ {
+ throw_error (OPTIMIZED_OUT_ERROR,
+ _("Register %d was not saved"), regnum);
+ }
+ if (!value_entirely_available (value))
+ {
+ throw_error (NOT_AVAILABLE_ERROR,
+ _("Register %d is not available"), regnum);
+ }
+
+ ULONGEST r = extract_unsigned_integer (value_contents_all (value), size,
+ byte_order);
+
+ release_value (value);
+ value_free (value);
+ return r;
}
ULONGEST
}
else
{
- gdb_byte buf[MAX_REGISTER_SIZE];
- enum lval_type lval;
- CORE_ADDR addr;
- int realnum;
+ struct value *value = frame_unwind_register_value (frame->next,
+ regnum);
+ gdb_assert (value != NULL);
+ *optimizedp = value_optimized_out (value);
+ *unavailablep = !value_entirely_available (value);
- frame_register (frame, regnum, optimizedp, unavailablep,
- &lval, &addr, &realnum, buf);
if (*optimizedp || *unavailablep)
- return 0;
- memcpy (myaddr, buf + offset, curr_len);
+ {
+ release_value (value);
+ value_free (value);
+ return 0;
+ }
+ memcpy (myaddr, value_contents_all (value) + offset, curr_len);
+ release_value (value);
+ value_free (value);
}
myaddr += curr_len;
}
else
{
- gdb_byte buf[MAX_REGISTER_SIZE];
-
- deprecated_frame_register_read (frame, regnum, buf);
- memcpy (buf + offset, myaddr, curr_len);
- put_frame_register (frame, regnum, buf);
+ struct value *value = frame_unwind_register_value (frame->next,
+ regnum);
+ gdb_assert (value != NULL);
+
+ memcpy ((char *) value_contents_writeable (value) + offset, myaddr,
+ curr_len);
+ put_frame_register (frame, regnum, value_contents_raw (value));
+ release_value (value);
+ value_free (value);
}
myaddr += curr_len;
}
}
+#if GDB_SELF_TEST
+struct frame_info *
+create_test_frame (struct regcache *regcache)
+{
+ struct frame_info *this_frame = XCNEW (struct frame_info);
+
+ sentinel_frame = create_sentinel_frame (NULL, regcache);
+ sentinel_frame->prev = this_frame;
+ sentinel_frame->prev_p = 1;;
+ this_frame->prev_arch.p = 1;
+ this_frame->prev_arch.arch = get_regcache_arch (regcache);
+ this_frame->next = sentinel_frame;
+
+ return this_frame;
+}
+#endif
+
/* Create an arbitrary (i.e. address specified by user) or innermost frame.
Always returns a non-NULL value. */
something should be calling get_selected_frame() or
get_current_frame(). */
gdb_assert (this_frame != NULL);
+
+ /* If this_frame is the current frame, then compute and stash
+ its frame id prior to fetching and computing the frame id of the
+ previous frame. Otherwise, the cycle detection code in
+ get_prev_frame_if_no_cycle() will not work correctly. When
+ get_frame_id() is called later on, an assertion error will
+ be triggered in the event of a cycle between the current
+ frame and its previous frame. */
+ if (this_frame->level == 0)
+ get_frame_id (this_frame);
+
frame_pc_p = get_frame_pc_if_available (this_frame, &frame_pc);
/* tausq/2004-12-07: Dummy frames are skipped because it doesn't make much
return get_prev_frame_always (this_frame);
}
+struct frame_id
+get_prev_frame_id_by_id (struct frame_id id)
+{
+ struct frame_id prev_id;
+ struct frame_info *frame;
+
+ frame = frame_find_by_id (id);
+
+ if (frame != NULL)
+ prev_id = get_frame_id (get_prev_frame (frame));
+ else
+ prev_id = null_frame_id;
+
+ return prev_id;
+}
+
CORE_ADDR
get_frame_pc (struct frame_info *frame)
{
return 1;
}
-void
-find_frame_sal (struct frame_info *frame, struct symtab_and_line *sal)
+symtab_and_line
+find_frame_sal (frame_info *frame)
{
struct frame_info *next_frame;
int notcurrent;
/* If frame is inline, it certainly has symbols. */
gdb_assert (sym);
- init_sal (sal);
+
+ symtab_and_line sal;
if (SYMBOL_LINE (sym) != 0)
{
- sal->symtab = symbol_symtab (sym);
- sal->line = SYMBOL_LINE (sym);
+ sal.symtab = symbol_symtab (sym);
+ sal.line = SYMBOL_LINE (sym);
}
else
/* If the symbol does not have a location, we don't know where
the call site is. Do not pretend to. This is jarring, but
we can't do much better. */
- sal->pc = get_frame_pc (frame);
+ sal.pc = get_frame_pc (frame);
- sal->pspace = get_frame_program_space (frame);
-
- return;
+ sal.pspace = get_frame_program_space (frame);
+ return sal;
}
/* If FRAME is not the innermost frame, that normally means that
instruction/line, consequently, for such cases, want to get the
line containing fi->pc. */
if (!get_frame_pc_if_available (frame, &pc))
- {
- init_sal (sal);
- return;
- }
+ return {};
notcurrent = (pc != get_frame_address_in_block (frame));
- (*sal) = find_pc_line (pc, notcurrent);
+ return find_pc_line (pc, notcurrent);
}
/* Per "frame.h", return the ``address'' of the frame. Code should
return make_cleanup (frame_cleanup_after_sniffer, frame);
}
-extern initialize_file_ftype _initialize_frame; /* -Wmissing-prototypes */
-
static struct cmd_list_element *set_backtrace_cmdlist;
static struct cmd_list_element *show_backtrace_cmdlist;
projects / deliverable / binutils-gdb.git / blobdiff