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Re: [PATCH] Remove MAX_REGISTER_SIZE from target.c
- From: Alan Hayward <Alan dot Hayward at arm dot com>
- To: Yao Qi <qiyaoltc at gmail dot com>
- Cc: "gdb-patches at sourceware dot org" <gdb-patches at sourceware dot org>, nd <nd at arm dot com>
- Date: Fri, 24 Mar 2017 15:22:44 +0000
- Subject: Re: [PATCH] Remove MAX_REGISTER_SIZE from target.c
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> On 1 Mar 2017, at 17:22, Yao Qi <qiyaoltc@gmail.com> wrote:
>
> Alan Hayward <Alan.Hayward@arm.com> writes:
>
>> +extern void regcache_debug_print_register (const char *func,
>> + struct regcache *regcache,
>> + int regno);
>
> Comments are needed.
>
>> +
>> #endif /* REGCACHE_H */
>> diff --git a/gdb/regcache.c b/gdb/regcache.c
>> index f190eda0e47c5c03744fc26263505d1c30ea1ee8..31aa1baf7ef69c27c00e45e3c8d4eb3c41dc4203 100644
>> --- a/gdb/regcache.c
>> +++ b/gdb/regcache.c
>> @@ -1259,6 +1259,42 @@ regcache_write_pc (struct regcache *regcache, CORE_ADDR pc)
>> reinit_frame_cache ();
>> }
>>
>> +void
>> +regcache_debug_print_register (const char *func, struct regcache *regcache,
>> + int regno)
>> +{
>> + struct gdbarch *gdbarch = get_regcache_arch (regcache);
>> +
>> + fprintf_unfiltered (gdb_stdlog, "%s ", func);
>> + if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
>> + && gdbarch_register_name (gdbarch, regno) != NULL
>> + && gdbarch_register_name (gdbarch, regno)[0] != '\0')
>> + fprintf_unfiltered (gdb_stdlog, "(%s)",
>> + gdbarch_register_name (gdbarch, regno));
>> + else
>> + fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
>> + if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
>> + {
>> + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
>> + int i, size = register_size (gdbarch, regno);
>> + gdb_byte *buf = register_buffer (regcache, regno);
>> +
>> + regcache_raw_collect (regcache, regno, buf);
>
> Don't need to call regcache_raw_collect, otherwise, the src and dst of
> copy is at the same address (register_buffer (regcache, regno)).
>
> --
> Yao (齐尧)
Patch updated from review comments.
Tested using make check with board files unix and native-gdbserver.
Ok to commit?
Alan.
2017-03-24 Alan Hayward <alan.hayward@arm.com>
* regcache.c (regcache_debug_print_register): New function.
* regcache.h (regcache_debug_print_register): New declaration.
* target.c (debug_print_register): Remove.
(target_fetch_registers): Call regcache_debug_print_register.
(target_store_registers): Likewise.
diff --git a/gdb/regcache.h b/gdb/regcache.h
index 63a1a980eb757167fe253164730a534344543948..8b7a0a2afb416df9c03216a203f05d1a2ca0ac8d 100644
--- a/gdb/regcache.h
+++ b/gdb/regcache.h
@@ -234,4 +234,10 @@ extern void regcache_cpy (struct regcache *dest, struct regcache *src);
extern void registers_changed (void);
extern void registers_changed_ptid (ptid_t);
+/* Dump the contents of a register from the register cache to the target
+ debug. */
+extern void regcache_debug_print_register (const char *func,
+ struct regcache *regcache,
+ int regno);
+
#endif /* REGCACHE_H */
diff --git a/gdb/regcache.c b/gdb/regcache.c
index 59ee5be14817d61ec1180cae2c19719949af0a03..eb6d09f6cb50ff9347991b7b061f4314c497e018 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -1268,6 +1268,41 @@ regcache_write_pc (struct regcache *regcache, CORE_ADDR pc)
reinit_frame_cache ();
}
+void
+regcache_debug_print_register (const char *func, struct regcache *regcache,
+ int regno)
+{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+
+ fprintf_unfiltered (gdb_stdlog, "%s ", func);
+ if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
+ && gdbarch_register_name (gdbarch, regno) != NULL
+ && gdbarch_register_name (gdbarch, regno)[0] != '\0')
+ fprintf_unfiltered (gdb_stdlog, "(%s)",
+ gdbarch_register_name (gdbarch, regno));
+ else
+ fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
+ if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
+ {
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int i, size = register_size (gdbarch, regno);
+ gdb_byte *buf = register_buffer (regcache, regno);
+
+ fprintf_unfiltered (gdb_stdlog, " = ");
+ for (i = 0; i < size; i++)
+ {
+ fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
+ }
+ if (size <= sizeof (LONGEST))
+ {
+ ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
+
+ fprintf_unfiltered (gdb_stdlog, " %s %s",
+ core_addr_to_string_nz (val), plongest (val));
+ }
+ }
+ fprintf_unfiltered (gdb_stdlog, "\n");
+}
static void
reg_flush_command (char *command, int from_tty)
diff --git a/gdb/target.c b/gdb/target.c
index 0ff8515d3b731ff5929e5c9c68a20d124c1ecd67..7c286ab6bf821ced42a0c1ac945343b761a37157 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -3547,49 +3547,12 @@ target_options_to_string (int target_options)
return ret;
}
-static void
-debug_print_register (const char * func,
- struct regcache *regcache, int regno)
-{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
-
- fprintf_unfiltered (gdb_stdlog, "%s ", func);
- if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)
- && gdbarch_register_name (gdbarch, regno) != NULL
- && gdbarch_register_name (gdbarch, regno)[0] != '\0')
- fprintf_unfiltered (gdb_stdlog, "(%s)",
- gdbarch_register_name (gdbarch, regno));
- else
- fprintf_unfiltered (gdb_stdlog, "(%d)", regno);
- if (regno >= 0 && regno < gdbarch_num_regs (gdbarch))
- {
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- int i, size = register_size (gdbarch, regno);
- gdb_byte buf[MAX_REGISTER_SIZE];
-
- regcache_raw_collect (regcache, regno, buf);
- fprintf_unfiltered (gdb_stdlog, " = ");
- for (i = 0; i < size; i++)
- {
- fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]);
- }
- if (size <= sizeof (LONGEST))
- {
- ULONGEST val = extract_unsigned_integer (buf, size, byte_order);
-
- fprintf_unfiltered (gdb_stdlog, " %s %s",
- core_addr_to_string_nz (val), plongest (val));
- }
- }
- fprintf_unfiltered (gdb_stdlog, "\n");
-}
-
void
target_fetch_registers (struct regcache *regcache, int regno)
{
current_target.to_fetch_registers (¤t_target, regcache, regno);
if (targetdebug)
- debug_print_register ("target_fetch_registers", regcache, regno);
+ regcache_debug_print_register ("target_fetch_registers", regcache, regno);
}
void
@@ -3601,7 +3564,8 @@ target_store_registers (struct regcache *regcache, int regno)
current_target.to_store_registers (¤t_target, regcache, regno);
if (targetdebug)
{
- debug_print_register ("target_store_registers", regcache, regno);
+ regcache_debug_print_register ("target_store_registers", regcache,
+ regno);
}
}