[PATCH v4 04/10] Commonise tdesc_feature
alan.hayward@arm.com
alan.hayward@arm.com
Thu Mar 22 08:45:00 GMT 2018
From: Alan Hayward <alan.hayward@arm.com>
This patch commonises tdesc_feature and makes use of it in gdbserver tdesc.
Previously in gdbserver, target_desc was interchangeable with tdesc_feature.
Now gdbserver target_desc contains a vector of tdesc_feature.
I am now able to commonise tdesc_create_reg (wanted to do this in the
previous patch).
I also had to commonise tdesc_type. This is ok, because I will need them
in the next patch.
Identical to V3 except for removal of "struct type;" at the top of
common/tdesc.h
Alan.
2018-03-21 Alan Hayward <alan.hayward@arm.com>
gdb/
* common/tdesc.c (tdesc_feature::accept): Move to here.
(tdesc_feature::operator==): Likewise.
(tdesc_create_reg): Likewise.
* common/tdesc.h (tdesc_type_kind): Likewise.
(struct tdesc_type): Likewise.
(struct tdesc_feature): Likewise.
* regformats/regdat.sh: Create a feature.
* target-descriptions.c (tdesc_type_kind): Move from here.
(tdesc_type): Likewise.
(tdesc_type_up): Likewise.
(tdesc_feature): Likewise.
(tdesc_create_reg): Likewise.
gdbserver/
* tdesc.c (~target_desc): Remove implictly deleted items.
(init_target_desc): Iterate all features.
(tdesc_get_features_xml): Use vector.
(tdesc_create_feature): Create feature.
* tdesc.h (tdesc_feature) Remove
(target_desc): Add features.
---
gdb/common/tdesc.c | 58 ++++++++++++++++++
gdb/common/tdesc.h | 93 +++++++++++++++++++++++++++++
gdb/gdbserver/tdesc.c | 89 ++++++++++------------------
gdb/gdbserver/tdesc.h | 14 ++---
gdb/regformats/regdat.sh | 4 +-
gdb/target-descriptions.c | 148 ----------------------------------------------
6 files changed, 189 insertions(+), 217 deletions(-)
diff --git a/gdb/common/tdesc.c b/gdb/common/tdesc.c
index a5f2de4b5b..ef6ed944df 100644
--- a/gdb/common/tdesc.c
+++ b/gdb/common/tdesc.c
@@ -38,3 +38,61 @@ tdesc_reg::tdesc_reg (struct tdesc_feature *feature, const std::string &name_,
have easy access to the containing feature when we want it later. */
tdesc_type = tdesc_named_type (feature, type.c_str ());
}
+
+void tdesc_feature::accept (tdesc_element_visitor &v) const
+{
+ v.visit_pre (this);
+
+ for (const tdesc_type_up &type : types)
+ type->accept (v);
+
+ for (const tdesc_reg_up ® : registers)
+ reg->accept (v);
+
+ v.visit_post (this);
+}
+
+bool tdesc_feature::operator== (const tdesc_feature &other) const
+{
+ if (name != other.name)
+ return false;
+
+ if (registers.size () != other.registers.size ())
+ return false;
+
+ for (int ix = 0; ix < registers.size (); ix++)
+ {
+ const tdesc_reg_up ®1 = registers[ix];
+ const tdesc_reg_up ®2 = other.registers[ix];
+
+ if (reg1 != reg2 && *reg1 != *reg2)
+ return false;
+ }
+
+ if (types.size () != other.types.size ())
+ return false;
+
+ for (int ix = 0; ix < types.size (); ix++)
+ {
+ const tdesc_type_up &type1 = types[ix];
+ const tdesc_type_up &type2 = other.types[ix];
+
+ if (type1 != type2 && *type1 != *type2)
+ return false;
+ }
+
+ return true;
+}
+
+/* See common/tdesc.h. */
+
+void
+tdesc_create_reg (struct tdesc_feature *feature, const char *name,
+ int regnum, int save_restore, const char *group,
+ int bitsize, const char *type)
+{
+ tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore,
+ group, bitsize, type);
+
+ feature->registers.emplace_back (reg);
+}
diff --git a/gdb/common/tdesc.h b/gdb/common/tdesc.h
index ac6dfdf7bb..58d7126c7b 100644
--- a/gdb/common/tdesc.h
+++ b/gdb/common/tdesc.h
@@ -137,6 +137,99 @@ struct tdesc_reg : tdesc_element
typedef std::unique_ptr<tdesc_reg> tdesc_reg_up;
+enum tdesc_type_kind
+{
+ /* Predefined types. */
+ TDESC_TYPE_BOOL,
+ TDESC_TYPE_INT8,
+ TDESC_TYPE_INT16,
+ TDESC_TYPE_INT32,
+ TDESC_TYPE_INT64,
+ TDESC_TYPE_INT128,
+ TDESC_TYPE_UINT8,
+ TDESC_TYPE_UINT16,
+ TDESC_TYPE_UINT32,
+ TDESC_TYPE_UINT64,
+ TDESC_TYPE_UINT128,
+ TDESC_TYPE_CODE_PTR,
+ TDESC_TYPE_DATA_PTR,
+ TDESC_TYPE_IEEE_SINGLE,
+ TDESC_TYPE_IEEE_DOUBLE,
+ TDESC_TYPE_ARM_FPA_EXT,
+ TDESC_TYPE_I387_EXT,
+
+ /* Types defined by a target feature. */
+ TDESC_TYPE_VECTOR,
+ TDESC_TYPE_STRUCT,
+ TDESC_TYPE_UNION,
+ TDESC_TYPE_FLAGS,
+ TDESC_TYPE_ENUM
+};
+
+struct tdesc_type : tdesc_element
+{
+ tdesc_type (const std::string &name_, enum tdesc_type_kind kind_)
+ : name (name_), kind (kind_)
+ {}
+
+ virtual ~tdesc_type () = default;
+
+ DISABLE_COPY_AND_ASSIGN (tdesc_type);
+
+ /* The name of this type. */
+ std::string name;
+
+ /* Identify the kind of this type. */
+ enum tdesc_type_kind kind;
+
+ bool operator== (const tdesc_type &other) const
+ {
+ return name == other.name && kind == other.kind;
+ }
+
+ bool operator!= (const tdesc_type &other) const
+ {
+ return !(*this == other);
+ }
+};
+
+typedef std::unique_ptr<tdesc_type> tdesc_type_up;
+
+/* A feature from a target description. Each feature is a collection
+ of other elements, e.g. registers and types. */
+
+struct tdesc_feature : tdesc_element
+{
+ tdesc_feature (const std::string &name_)
+ : name (name_)
+ {}
+
+ virtual ~tdesc_feature () = default;
+
+ DISABLE_COPY_AND_ASSIGN (tdesc_feature);
+
+ /* The name of this feature. It may be recognized by the architecture
+ support code. */
+ std::string name;
+
+ /* The registers associated with this feature. */
+ std::vector<tdesc_reg_up> registers;
+
+ /* The types associated with this feature. */
+ std::vector<tdesc_type_up> types;
+
+ void accept (tdesc_element_visitor &v) const override;
+
+ bool operator== (const tdesc_feature &other) const;
+
+ bool operator!= (const tdesc_feature &other) const
+ {
+ return !(*this == other);
+ }
+};
+
+typedef std::unique_ptr<tdesc_feature> tdesc_feature_up;
+
/* Allocate a new target_desc. */
target_desc *allocate_target_description (void);
diff --git a/gdb/gdbserver/tdesc.c b/gdb/gdbserver/tdesc.c
index dbf07b2c8d..da1dbdf651 100644
--- a/gdb/gdbserver/tdesc.c
+++ b/gdb/gdbserver/tdesc.c
@@ -23,16 +23,8 @@
target_desc::~target_desc ()
{
- int i;
-
xfree ((char *) arch);
xfree ((char *) osabi);
-
- char *f;
-
- for (i = 0; VEC_iterate (char_ptr, features, i, f); i++)
- xfree (f);
- VEC_free (char_ptr, features);
}
bool target_desc::operator== (const target_desc &other) const
@@ -70,35 +62,36 @@ init_target_desc (struct target_desc *tdesc)
int offset = 0;
/* Go through all the features and populate reg_defs. */
- for (const tdesc_reg_up &treg : tdesc->registers)
- {
- int current_size = tdesc->reg_defs.size ();
+ for (const tdesc_feature_up &feature : tdesc->features)
+ for (const tdesc_reg_up &treg : feature->registers)
+ {
+ int current_size = tdesc->reg_defs.size ();
- /* Register number will either increase (possibly with gaps) or be
- zero. */
- gdb_assert (treg->target_regnum == 0
- || treg->target_regnum >= current_size);
+ /* Register number will either increase (possibly with gaps) or be
+ zero. */
+ gdb_assert (treg->target_regnum == 0
+ || treg->target_regnum >= current_size);
- tdesc->reg_defs.resize (treg->target_regnum != 0
+ tdesc->reg_defs.resize (treg->target_regnum != 0
? treg->target_regnum + 1
: current_size + 1);
- /* Fill in any blank spaces. */
- while (current_size < treg->target_regnum)
- {
- struct reg *reg = &tdesc->reg_defs[current_size];
- reg->name = "";
- reg->size = 0;
- reg->offset = offset;
- current_size++;
- }
-
- struct reg *reg = &tdesc->reg_defs.back ();
- reg->name = treg->name.c_str ();
- reg->size = treg->bitsize;
- reg->offset = offset;
- offset += reg->size;
- }
+ /* Fill in any blank spaces. */
+ while (current_size < treg->target_regnum)
+ {
+ struct reg *reg = &tdesc->reg_defs[current_size];
+ reg->name = "";
+ reg->size = 0;
+ reg->offset = offset;
+ current_size++;
+ }
+
+ struct reg *reg = &tdesc->reg_defs.back ();
+ reg->name = treg->name.c_str ();
+ reg->size = treg->bitsize;
+ reg->offset = offset;
+ offset += reg->size;
+ }
tdesc->registers_size = offset / 8;
@@ -161,7 +154,7 @@ tdesc_get_features_xml (target_desc *tdesc)
{
/* Either .xmltarget or .features is not NULL. */
gdb_assert (tdesc->xmltarget != NULL
- || (tdesc->features != NULL
+ || (!tdesc->features.empty ()
&& tdesc->arch != NULL));
if (tdesc->xmltarget == NULL)
@@ -181,12 +174,10 @@ tdesc_get_features_xml (target_desc *tdesc)
buffer += "</osabi>";
}
- char *xml;
-
- for (int i = 0; VEC_iterate (char_ptr, tdesc->features, i, xml); i++)
+ for (const tdesc_feature_up &feature : tdesc->features)
{
buffer += "<xi:include href=\"";
- buffer += xml;
+ buffer += feature->name;
buffer += "\"/>";
}
@@ -199,19 +190,16 @@ tdesc_get_features_xml (target_desc *tdesc)
}
#endif
-struct tdesc_type
-{};
-
/* See common/tdesc.h. */
struct tdesc_feature *
tdesc_create_feature (struct target_desc *tdesc, const char *name,
const char *xml)
{
-#ifndef IN_PROCESS_AGENT
- VEC_safe_push (char_ptr, tdesc->features, xstrdup (xml));
-#endif
- return tdesc;
+ struct tdesc_feature *new_feature = new tdesc_feature
+ (xml != nullptr ? xml : name);
+ tdesc->features.emplace_back (new_feature);
+ return new_feature;
}
/* See common/tdesc.h. */
@@ -256,19 +244,6 @@ tdesc_create_struct (struct tdesc_feature *feature, const char *id)
/* See common/tdesc.h. */
-void
-tdesc_create_reg (struct tdesc_feature *feature, const char *name,
- int regnum, int save_restore, const char *group,
- int bitsize, const char *type)
-{
- tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore,
- group, bitsize, type);
-
- tdesc->registers.emplace_back (reg);
-}
-
-/* See common/tdesc.h. */
-
struct tdesc_type *
tdesc_create_vector (struct tdesc_feature *feature, const char *name,
struct tdesc_type *field_type, int count)
diff --git a/gdb/gdbserver/tdesc.h b/gdb/gdbserver/tdesc.h
index c64ce13b25..197fb59127 100644
--- a/gdb/gdbserver/tdesc.h
+++ b/gdb/gdbserver/tdesc.h
@@ -24,16 +24,10 @@
#include "regdef.h"
#include <vector>
-struct tdesc_feature
-{
- /* The registers associated with this feature. */
- std::vector<tdesc_reg_up> registers;
-};
-
/* A target description. Inherit from tdesc_feature so that target_desc
can be used as tdesc_feature. */
-struct target_desc : tdesc_feature
+struct target_desc
{
/* A vector of elements of register definitions that
describe the inferior's register set. */
@@ -42,6 +36,9 @@ struct target_desc : tdesc_feature
/* The register cache size, in bytes. */
int registers_size;
+ /* XML features in this target description. */
+ std::vector<tdesc_feature_up> features;
+
#ifndef IN_PROCESS_AGENT
/* An array of register names. These are the "expedite" registers:
registers whose values are sent along with stop replies. */
@@ -56,9 +53,6 @@ struct target_desc : tdesc_feature
fields features, arch, and osabi in tdesc_get_features_xml. */
const char *xmltarget = NULL;
- /* XML features in this target description. */
- VEC (char_ptr) *features = NULL;
-
/* The value of <architecture> element in the XML, replying GDB. */
const char *arch = NULL;
diff --git a/gdb/regformats/regdat.sh b/gdb/regformats/regdat.sh
index ce1627120d..8c6e191596 100755
--- a/gdb/regformats/regdat.sh
+++ b/gdb/regformats/regdat.sh
@@ -131,7 +131,7 @@ do
echo "{"
echo " static struct target_desc tdesc_${name}_s;"
echo " struct target_desc *result = &tdesc_${name}_s;"
-
+ echo " struct tdesc_feature *feature = tdesc_create_feature (result, \"${name}\");"
continue
elif test "${type}" = "xmltarget"; then
xmltarget="${entry}"
@@ -149,7 +149,7 @@ do
echo "$0: $1 does not specify \`\`name''." 1>&2
exit 1
else
- echo " tdesc_create_reg ((struct tdesc_feature *) result, \"${entry}\","
+ echo " tdesc_create_reg (feature, \"${entry}\","
echo " 0, 0, NULL, ${type}, NULL);"
offset=`expr ${offset} + ${type}`
diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c
index 3186bf886f..a453eddec0 100644
--- a/gdb/target-descriptions.c
+++ b/gdb/target-descriptions.c
@@ -67,64 +67,6 @@ struct tdesc_type_field
int start, end;
};
-enum tdesc_type_kind
-{
- /* Predefined types. */
- TDESC_TYPE_BOOL,
- TDESC_TYPE_INT8,
- TDESC_TYPE_INT16,
- TDESC_TYPE_INT32,
- TDESC_TYPE_INT64,
- TDESC_TYPE_INT128,
- TDESC_TYPE_UINT8,
- TDESC_TYPE_UINT16,
- TDESC_TYPE_UINT32,
- TDESC_TYPE_UINT64,
- TDESC_TYPE_UINT128,
- TDESC_TYPE_CODE_PTR,
- TDESC_TYPE_DATA_PTR,
- TDESC_TYPE_IEEE_SINGLE,
- TDESC_TYPE_IEEE_DOUBLE,
- TDESC_TYPE_ARM_FPA_EXT,
- TDESC_TYPE_I387_EXT,
-
- /* Types defined by a target feature. */
- TDESC_TYPE_VECTOR,
- TDESC_TYPE_STRUCT,
- TDESC_TYPE_UNION,
- TDESC_TYPE_FLAGS,
- TDESC_TYPE_ENUM
-};
-
-struct tdesc_type : tdesc_element
-{
- tdesc_type (const std::string &name_, enum tdesc_type_kind kind_)
- : name (name_), kind (kind_)
- {}
-
- virtual ~tdesc_type () = default;
-
- DISABLE_COPY_AND_ASSIGN (tdesc_type);
-
- /* The name of this type. */
- std::string name;
-
- /* Identify the kind of this type. */
- enum tdesc_type_kind kind;
-
- bool operator== (const tdesc_type &other) const
- {
- return name == other.name && kind == other.kind;
- }
-
- bool operator!= (const tdesc_type &other) const
- {
- return !(*this == other);
- }
-};
-
-typedef std::unique_ptr<tdesc_type> tdesc_type_up;
-
struct tdesc_type_builtin : tdesc_type
{
tdesc_type_builtin (const std::string &name, enum tdesc_type_kind kind)
@@ -428,82 +370,6 @@ make_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *ttype)
return gdb_type.get_type ();
}
-/* A feature from a target description. Each feature is a collection
- of other elements, e.g. registers and types. */
-
-struct tdesc_feature : tdesc_element
-{
- tdesc_feature (const std::string &name_)
- : name (name_)
- {}
-
- virtual ~tdesc_feature () = default;
-
- DISABLE_COPY_AND_ASSIGN (tdesc_feature);
-
- /* The name of this feature. It may be recognized by the architecture
- support code. */
- std::string name;
-
- /* The registers associated with this feature. */
- std::vector<tdesc_reg_up> registers;
-
- /* The types associated with this feature. */
- std::vector<tdesc_type_up> types;
-
- void accept (tdesc_element_visitor &v) const override
- {
- v.visit_pre (this);
-
- for (const tdesc_type_up &type : types)
- type->accept (v);
-
- for (const tdesc_reg_up ® : registers)
- reg->accept (v);
-
- v.visit_post (this);
- }
-
- bool operator== (const tdesc_feature &other) const
- {
- if (name != other.name)
- return false;
-
- if (registers.size () != other.registers.size ())
- return false;
-
- for (int ix = 0; ix < registers.size (); ix++)
- {
- const tdesc_reg_up ®1 = registers[ix];
- const tdesc_reg_up ®2 = other.registers[ix];
-
- if (reg1 != reg2 && *reg1 != *reg2)
- return false;
- }
-
- if (types.size () != other.types.size ())
- return false;
-
- for (int ix = 0; ix < types.size (); ix++)
- {
- const tdesc_type_up &type1 = types[ix];
- const tdesc_type_up &type2 = other.types[ix];
-
- if (type1 != type2 && *type1 != *type2)
- return false;
- }
-
- return true;
- }
-
- bool operator!= (const tdesc_feature &other) const
- {
- return !(*this == other);
- }
-};
-
-typedef std::unique_ptr<tdesc_feature> tdesc_feature_up;
-
/* A target description. */
struct target_desc : tdesc_element
@@ -1358,20 +1224,6 @@ tdesc_use_registers (struct gdbarch *gdbarch,
tdesc_remote_register_number);
set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p);
}
-
-
-/* See common/tdesc.h. */
-
-void
-tdesc_create_reg (struct tdesc_feature *feature, const char *name,
- int regnum, int save_restore, const char *group,
- int bitsize, const char *type)
-{
- tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore,
- group, bitsize, type);
-
- feature->registers.emplace_back (reg);
-}
/* See common/tdesc.h. */
--
2.14.3 (Apple Git-98)
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