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-rw-r--r--gdb/d10v-tdep.c115
1 files changed, 76 insertions, 39 deletions
diff --git a/gdb/d10v-tdep.c b/gdb/d10v-tdep.c
index 1f021ce..9ca62a5 100644
--- a/gdb/d10v-tdep.c
+++ b/gdb/d10v-tdep.c
@@ -1,14 +1,18 @@
-/* Target-dependent code for MItsubishi D10V, for GDB.
- Copyright (C) 1996 Free Software Foundation, Inc.
+/* Target-dependent code for Mitsubishi D10V, for GDB.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+
This file is part of GDB.
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
+
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
@@ -29,11 +33,12 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "symfile.h"
#include "objfiles.h"
-void d10v_frame_find_saved_regs PARAMS ((struct frame_info *fi, struct frame_saved_regs *fsr));
+void d10v_frame_find_saved_regs PARAMS ((struct frame_info *fi,
+ struct frame_saved_regs *fsr));
static void d10v_pop_dummy_frame PARAMS ((struct frame_info *fi));
-/* Discard from the stack the innermost frame,
- restoring all saved registers. */
+/* Discard from the stack the innermost frame, restoring all saved
+ registers. */
void
d10v_pop_frame ()
@@ -650,7 +655,7 @@ d10v_extract_return_value (valtype, regbuf, valbuf)
/* The following code implements access to, and display of, the D10V's
instruction trace buffer. The buffer consists of 64K or more
4-byte words of data, of which each words includes an 8-bit count,
- and 8-bit segment number, and a 16-bit instruction address.
+ an 8-bit segment number, and a 16-bit instruction address.
In theory, the trace buffer is continuously capturing instruction
data that the CPU presents on its "debug bus", but in practice, the
@@ -691,8 +696,14 @@ static int tracing;
static CORE_ADDR last_pc;
+/* True when trace output should be displayed whenever program stops. */
+
static int trace_display;
+/* True when trace listing should include source lines. */
+
+static int default_trace_show_source = 1;
+
struct trace_buffer {
int size;
short *counts;
@@ -733,15 +744,20 @@ trace_info (args, from_tty)
{
int i;
- printf_filtered ("%d entries in trace buffer:\n", trace_data.size);
-
- for (i = 0; i < trace_data.size; ++i)
+ if (trace_data.size)
{
- printf_filtered ("%d: %d instruction%s at 0x%x\n",
- i, trace_data.counts[i],
- (trace_data.counts[i] == 1 ? "" : "s"),
- trace_data.addrs[i]);
+ printf_filtered ("%d entries in trace buffer:\n", trace_data.size);
+
+ for (i = 0; i < trace_data.size; ++i)
+ {
+ printf_filtered ("%d: %d instruction%s at 0x%x\n",
+ i, trace_data.counts[i],
+ (trace_data.counts[i] == 1 ? "" : "s"),
+ trace_data.addrs[i]);
+ }
}
+ else
+ printf_filtered ("No entries in trace buffer.\n");
printf_filtered ("Tracing is currently %s.\n", (tracing ? "on" : "off"));
}
@@ -792,11 +808,6 @@ d10v_eva_get_trace_data ()
last_trace = read_memory_unsigned_integer (DBBC_ADDR, 2) << 2;
-#if 0
- printf_filtered("Last pc is %x, is now %x\n",
- last_pc, read_register (PC_REGNUM));
-#endif
-
/* Collect buffer contents from the target, stopping when we reach
the word recorded when execution resumed. */
@@ -807,12 +818,6 @@ d10v_eva_get_trace_data ()
trace_word =
read_memory_unsigned_integer (TRACE_BUFFER_BASE + last_trace, 4);
trace_addr = trace_word & 0xffff;
-#if 0
- trace_seg = (trace_word >> 16) & 0xff;
- trace_cnt = (trace_word >> 24) & 0xff;
- printf_filtered("Trace word at %x is %x %x %x\n", last_trace,
- trace_cnt, trace_seg, trace_addr);
-#endif
last_trace -= 4;
/* Ignore an apparently nonsensical entry. */
if (trace_addr == 0xffd5)
@@ -844,14 +849,6 @@ d10v_eva_get_trace_data ()
free (tmpspace);
-#if 0
- for (i = 0; i < trace_data.size; ++i)
- {
- printf_filtered("%d insns after %x\n",
- trace_data.counts[i], trace_data.addrs[i]);
- }
-#endif
-
if (trace_display)
display_trace (oldsize, trace_data.size);
}
@@ -881,14 +878,11 @@ tdisassemble_command (arg, from_tty)
*space_index = '\0';
low = parse_and_eval_address (arg);
high = parse_and_eval_address (space_index + 1);
+ if (high < low)
+ high = low;
}
- printf_filtered ("Dump of trace ");
- printf_filtered ("from ");
- print_address_numeric (low, 1, gdb_stdout);
- printf_filtered (" to ");
- print_address_numeric (high, 1, gdb_stdout);
- printf_filtered (":\n");
+ printf_filtered ("Dump of trace from %d to %d:\n", low, high);
display_trace (low, high);
@@ -900,9 +894,19 @@ static void
display_trace (low, high)
int low, high;
{
- int i, count;
+ int i, count, trace_show_source, first, suppress;
CORE_ADDR next_address;
+ trace_show_source = default_trace_show_source;
+ if (!have_full_symbols () && !have_partial_symbols())
+ {
+ trace_show_source = 0;
+ printf_filtered ("No symbol table is loaded. Use the \"file\" command.\n");
+ printf_filtered ("Trace will not display any source.\n");
+ }
+
+ first = 1;
+ suppress = 0;
for (i = low; i < high; ++i)
{
next_address = trace_data.addrs[i];
@@ -910,6 +914,29 @@ display_trace (low, high)
while (count-- > 0)
{
QUIT;
+ if (trace_show_source)
+ {
+ struct symtab_and_line sal, sal_prev;
+
+ sal_prev = find_pc_line (next_address - 4, 0);
+ sal = find_pc_line (next_address, 0);
+
+ if (sal.symtab)
+ {
+ if (first || sal.line != sal_prev.line)
+ print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
+ suppress = 0;
+ }
+ else
+ {
+ if (!suppress)
+ /* FIXME-32x64--assumes sal.pc fits in long. */
+ printf_filtered ("No source file for address %s.\n",
+ local_hex_string((unsigned long) sal.pc));
+ suppress = 1;
+ }
+ }
+ first = 0;
print_address (next_address, gdb_stdout);
printf_filtered (":");
printf_filtered ("\t");
@@ -921,11 +948,17 @@ display_trace (low, high)
}
}
+extern void (*target_resume_hook) PARAMS ((void));
+extern void (*target_wait_loop_hook) PARAMS ((void));
+
void
_initialize_d10v_tdep ()
{
tm_print_insn = print_insn_d10v;
+ target_resume_hook = d10v_eva_prepare_to_trace;
+ target_wait_loop_hook = d10v_eva_get_trace_data;
+
add_com ("regs", class_vars, show_regs, "Print all registers");
add_com ("trace", class_support, trace_command,
@@ -946,5 +979,9 @@ as reported by info trace (NOT addresses!).");
var_integer, (char *)&trace_display,
"Set automatic display of trace.\n", &setlist),
&showlist);
+ add_show_from_set (add_set_cmd ("tracesource", no_class,
+ var_integer, (char *)&default_trace_show_source,
+ "Set display of source code with trace.\n", &setlist),
+ &showlist);
}
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