mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
a6d0f2490c
AArch64 can fill the vector registers with half precision floats. Add a view for this. Add builtin type ieee half and connect this to the existing floatformats_ieee_half. gdb/ChangeLog: 2019-05-14 Alan Hayward <alan.hayward@arm.com> * aarch64-tdep.c (aarch64_vnh_type): Add half view. (aarch64_vnv_type): Likewise. * target-descriptions.c (make_gdb_type): Add TDESC_TYPE_IEEE_HALF. * common/tdesc.c: Likewise. * common/tdesc.h (enum tdesc_type_kind): Likewise. * features/aarch64-fpu.c (create_feature_aarch64_fpu): Regenerate. * features/aarch64-fpu.xml: Add ieee half view. * features/aarch64-sve.c (create_feature_aarch64_fpu): Likewise. * gdbtypes.c (gdbtypes_post_init): Add builtin_half * gdbtypes.h (struct builtin_type): Likewise. (struct objfile_type): Likewise.
402 lines
11 KiB
C
402 lines
11 KiB
C
/* Target description support for GDB.
|
|
|
|
Copyright (C) 2018-2019 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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "common-defs.h"
|
|
#include "common/tdesc.h"
|
|
|
|
tdesc_reg::tdesc_reg (struct tdesc_feature *feature, const std::string &name_,
|
|
int regnum, int save_restore_, const char *group_,
|
|
int bitsize_, const char *type_)
|
|
: name (name_), target_regnum (regnum),
|
|
save_restore (save_restore_),
|
|
group (group_ != NULL ? group_ : ""),
|
|
bitsize (bitsize_),
|
|
type (type_ != NULL ? type_ : "<unknown>")
|
|
{
|
|
/* If the register's type is target-defined, look it up now. We may not
|
|
have easy access to the containing feature when we want it later. */
|
|
tdesc_type = tdesc_named_type (feature, type.c_str ());
|
|
}
|
|
|
|
/* Predefined types. */
|
|
static tdesc_type_builtin tdesc_predefined_types[] =
|
|
{
|
|
{ "bool", TDESC_TYPE_BOOL },
|
|
{ "int8", TDESC_TYPE_INT8 },
|
|
{ "int16", TDESC_TYPE_INT16 },
|
|
{ "int32", TDESC_TYPE_INT32 },
|
|
{ "int64", TDESC_TYPE_INT64 },
|
|
{ "int128", TDESC_TYPE_INT128 },
|
|
{ "uint8", TDESC_TYPE_UINT8 },
|
|
{ "uint16", TDESC_TYPE_UINT16 },
|
|
{ "uint32", TDESC_TYPE_UINT32 },
|
|
{ "uint64", TDESC_TYPE_UINT64 },
|
|
{ "uint128", TDESC_TYPE_UINT128 },
|
|
{ "code_ptr", TDESC_TYPE_CODE_PTR },
|
|
{ "data_ptr", TDESC_TYPE_DATA_PTR },
|
|
{ "ieee_half", TDESC_TYPE_IEEE_HALF },
|
|
{ "ieee_single", TDESC_TYPE_IEEE_SINGLE },
|
|
{ "ieee_double", TDESC_TYPE_IEEE_DOUBLE },
|
|
{ "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT },
|
|
{ "i387_ext", TDESC_TYPE_I387_EXT }
|
|
};
|
|
|
|
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;
|
|
}
|
|
|
|
/* Lookup a predefined type. */
|
|
|
|
static struct tdesc_type *
|
|
tdesc_predefined_type (enum tdesc_type_kind kind)
|
|
{
|
|
for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++)
|
|
if (tdesc_predefined_types[ix].kind == kind)
|
|
return &tdesc_predefined_types[ix];
|
|
|
|
gdb_assert_not_reached ("bad predefined tdesc type");
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
struct tdesc_type *
|
|
tdesc_named_type (const struct tdesc_feature *feature, const char *id)
|
|
{
|
|
/* First try target-defined types. */
|
|
for (const tdesc_type_up &type : feature->types)
|
|
if (type->name == id)
|
|
return type.get ();
|
|
|
|
/* Next try the predefined types. */
|
|
for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++)
|
|
if (tdesc_predefined_types[ix].name == id)
|
|
return &tdesc_predefined_types[ix];
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* 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. */
|
|
|
|
struct tdesc_type *
|
|
tdesc_create_vector (struct tdesc_feature *feature, const char *name,
|
|
struct tdesc_type *field_type, int count)
|
|
{
|
|
tdesc_type_vector *type = new tdesc_type_vector (name, field_type, count);
|
|
feature->types.emplace_back (type);
|
|
|
|
return type;
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
tdesc_type_with_fields *
|
|
tdesc_create_struct (struct tdesc_feature *feature, const char *name)
|
|
{
|
|
tdesc_type_with_fields *type
|
|
= new tdesc_type_with_fields (name, TDESC_TYPE_STRUCT);
|
|
feature->types.emplace_back (type);
|
|
|
|
return type;
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
void
|
|
tdesc_set_struct_size (tdesc_type_with_fields *type, int size)
|
|
{
|
|
gdb_assert (type->kind == TDESC_TYPE_STRUCT);
|
|
gdb_assert (size > 0);
|
|
type->size = size;
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
tdesc_type_with_fields *
|
|
tdesc_create_union (struct tdesc_feature *feature, const char *name)
|
|
{
|
|
tdesc_type_with_fields *type
|
|
= new tdesc_type_with_fields (name, TDESC_TYPE_UNION);
|
|
feature->types.emplace_back (type);
|
|
|
|
return type;
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
tdesc_type_with_fields *
|
|
tdesc_create_flags (struct tdesc_feature *feature, const char *name,
|
|
int size)
|
|
{
|
|
gdb_assert (size > 0);
|
|
|
|
tdesc_type_with_fields *type
|
|
= new tdesc_type_with_fields (name, TDESC_TYPE_FLAGS, size);
|
|
feature->types.emplace_back (type);
|
|
|
|
return type;
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
tdesc_type_with_fields *
|
|
tdesc_create_enum (struct tdesc_feature *feature, const char *name,
|
|
int size)
|
|
{
|
|
gdb_assert (size > 0);
|
|
|
|
tdesc_type_with_fields *type
|
|
= new tdesc_type_with_fields (name, TDESC_TYPE_ENUM, size);
|
|
feature->types.emplace_back (type);
|
|
|
|
return type;
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
void
|
|
tdesc_add_field (tdesc_type_with_fields *type, const char *field_name,
|
|
struct tdesc_type *field_type)
|
|
{
|
|
gdb_assert (type->kind == TDESC_TYPE_UNION
|
|
|| type->kind == TDESC_TYPE_STRUCT);
|
|
|
|
/* Initialize start and end so we know this is not a bit-field
|
|
when we print-c-tdesc. */
|
|
type->fields.emplace_back (field_name, field_type, -1, -1);
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
void
|
|
tdesc_add_typed_bitfield (tdesc_type_with_fields *type, const char *field_name,
|
|
int start, int end, struct tdesc_type *field_type)
|
|
{
|
|
gdb_assert (type->kind == TDESC_TYPE_STRUCT
|
|
|| type->kind == TDESC_TYPE_FLAGS);
|
|
gdb_assert (start >= 0 && end >= start);
|
|
|
|
type->fields.emplace_back (field_name, field_type, start, end);
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
void
|
|
tdesc_add_bitfield (tdesc_type_with_fields *type, const char *field_name,
|
|
int start, int end)
|
|
{
|
|
struct tdesc_type *field_type;
|
|
|
|
gdb_assert (start >= 0 && end >= start);
|
|
|
|
if (type->size > 4)
|
|
field_type = tdesc_predefined_type (TDESC_TYPE_UINT64);
|
|
else
|
|
field_type = tdesc_predefined_type (TDESC_TYPE_UINT32);
|
|
|
|
tdesc_add_typed_bitfield (type, field_name, start, end, field_type);
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
void
|
|
tdesc_add_flag (tdesc_type_with_fields *type, int start,
|
|
const char *flag_name)
|
|
{
|
|
gdb_assert (type->kind == TDESC_TYPE_FLAGS
|
|
|| type->kind == TDESC_TYPE_STRUCT);
|
|
|
|
type->fields.emplace_back (flag_name,
|
|
tdesc_predefined_type (TDESC_TYPE_BOOL),
|
|
start, start);
|
|
}
|
|
|
|
/* See common/tdesc.h. */
|
|
|
|
void
|
|
tdesc_add_enum_value (tdesc_type_with_fields *type, int value,
|
|
const char *name)
|
|
{
|
|
gdb_assert (type->kind == TDESC_TYPE_ENUM);
|
|
type->fields.emplace_back (name,
|
|
tdesc_predefined_type (TDESC_TYPE_INT32),
|
|
value, -1);
|
|
}
|
|
|
|
void print_xml_feature::visit_pre (const tdesc_feature *e)
|
|
{
|
|
string_appendf (*m_buffer, "<feature name=\"%s\">\n", e->name.c_str ());
|
|
}
|
|
|
|
void print_xml_feature::visit_post (const tdesc_feature *e)
|
|
{
|
|
string_appendf (*m_buffer, "</feature>\n");
|
|
}
|
|
|
|
void print_xml_feature::visit (const tdesc_type_builtin *t)
|
|
{
|
|
error (_("xml output is not supported for type \"%s\"."), t->name.c_str ());
|
|
}
|
|
|
|
void print_xml_feature::visit (const tdesc_type_vector *t)
|
|
{
|
|
string_appendf (*m_buffer, "<vector id=\"%s\" type=\"%s\" count=\"%d\"/>\n",
|
|
t->name.c_str (), t->element_type->name.c_str (), t->count);
|
|
}
|
|
|
|
void print_xml_feature::visit (const tdesc_type_with_fields *t)
|
|
{
|
|
const static char *types[] = { "struct", "union", "flags", "enum" };
|
|
|
|
gdb_assert (t->kind >= TDESC_TYPE_STRUCT && t->kind <= TDESC_TYPE_ENUM);
|
|
|
|
string_appendf (*m_buffer,
|
|
"<%s id=\"%s\"", types[t->kind - TDESC_TYPE_STRUCT],
|
|
t->name.c_str ());
|
|
|
|
switch (t->kind)
|
|
{
|
|
case TDESC_TYPE_STRUCT:
|
|
case TDESC_TYPE_FLAGS:
|
|
if (t->size > 0)
|
|
string_appendf (*m_buffer, " size=\"%d\"", t->size);
|
|
string_appendf (*m_buffer, ">\n");
|
|
|
|
for (const tdesc_type_field &f : t->fields)
|
|
{
|
|
string_appendf (*m_buffer, " <field name=\"%s\" ", f.name.c_str ());
|
|
if (f.start == -1)
|
|
string_appendf (*m_buffer, "type=\"%s\"/>\n",
|
|
f.type->name.c_str ());
|
|
else
|
|
string_appendf (*m_buffer, "start=\"%d\" end=\"%d\"/>\n", f.start,
|
|
f.end);
|
|
}
|
|
break;
|
|
|
|
case TDESC_TYPE_ENUM:
|
|
string_appendf (*m_buffer, ">\n");
|
|
for (const tdesc_type_field &f : t->fields)
|
|
string_appendf (*m_buffer, " <field name=\"%s\" start=\"%d\"/>\n",
|
|
f.name.c_str (), f.start);
|
|
break;
|
|
|
|
case TDESC_TYPE_UNION:
|
|
string_appendf (*m_buffer, ">\n");
|
|
for (const tdesc_type_field &f : t->fields)
|
|
string_appendf (*m_buffer, " <field name=\"%s\" type=\"%s\"/>\n",
|
|
f.name.c_str (), f.type->name.c_str ());
|
|
break;
|
|
|
|
default:
|
|
error (_("xml output is not supported for type \"%s\"."),
|
|
t->name.c_str ());
|
|
}
|
|
|
|
string_appendf (*m_buffer, "</%s>\n", types[t->kind - TDESC_TYPE_STRUCT]);
|
|
}
|
|
|
|
void print_xml_feature::visit (const tdesc_reg *r)
|
|
{
|
|
string_appendf (*m_buffer,
|
|
"<reg name=\"%s\" bitsize=\"%d\" type=\"%s\" regnum=\"%ld\"",
|
|
r->name.c_str (), r->bitsize, r->type.c_str (),
|
|
r->target_regnum);
|
|
|
|
if (r->group.length () > 0)
|
|
string_appendf (*m_buffer, " group=\"%s\"", r->group.c_str ());
|
|
|
|
if (r->save_restore == 0)
|
|
string_appendf (*m_buffer, " save-restore=\"no\"");
|
|
|
|
string_appendf (*m_buffer, "/>\n");
|
|
}
|
|
|
|
void print_xml_feature::visit_pre (const target_desc *e)
|
|
{
|
|
#ifndef IN_PROCESS_AGENT
|
|
string_appendf (*m_buffer, "<?xml version=\"1.0\"?>\n");
|
|
string_appendf (*m_buffer, "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">\n");
|
|
string_appendf (*m_buffer, "<target>\n<architecture>%s</architecture>\n",
|
|
tdesc_architecture_name (e));
|
|
|
|
const char *osabi = tdesc_osabi_name (e);
|
|
if (osabi != nullptr)
|
|
string_appendf (*m_buffer, "<osabi>%s</osabi>", osabi);
|
|
#endif
|
|
}
|
|
|
|
void print_xml_feature::visit_post (const target_desc *e)
|
|
{
|
|
string_appendf (*m_buffer, "</target>\n");
|
|
}
|