X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Ftarget-descriptions.c;h=16aaa64026bd255d7d7dcd63b3f15daa7738330a;hb=64c311498e46cef6b70aa88577e7d7c382e0f7cc;hp=1100f5ebaf3d5cea8abee588704f011695c31e97;hpb=23181151a2399f4ecbc272cda73172a078d1b435;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c
index 1100f5ebaf..16aaa64026 100644
--- a/gdb/target-descriptions.c
+++ b/gdb/target-descriptions.c
@@ -1,6 +1,6 @@
/* Target description support for GDB.
- Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2006-2012 Free Software Foundation, Inc.
Contributed by CodeSourcery.
@@ -8,7 +8,7 @@
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
+ 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,
@@ -17,19 +17,23 @@
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see . */
#include "defs.h"
#include "arch-utils.h"
#include "gdbcmd.h"
+#include "gdbtypes.h"
+#include "reggroups.h"
#include "target.h"
#include "target-descriptions.h"
#include "vec.h"
+#include "xml-support.h"
#include "xml-tdesc.h"
+#include "osabi.h"
#include "gdb_assert.h"
+#include "gdb_obstack.h"
+#include "hashtab.h"
/* Types. */
@@ -40,13 +44,191 @@ typedef struct property
} property_s;
DEF_VEC_O(property_s);
+/* An individual register from a target description. */
+
+typedef struct tdesc_reg
+{
+ /* The name of this register. In standard features, it may be
+ recognized by the architecture support code, or it may be purely
+ for the user. */
+ char *name;
+
+ /* The register number used by this target to refer to this
+ register. This is used for remote p/P packets and to determine
+ the ordering of registers in the remote g/G packets. */
+ long target_regnum;
+
+ /* If this flag is set, GDB should save and restore this register
+ around calls to an inferior function. */
+ int save_restore;
+
+ /* The name of the register group containing this register, or NULL
+ if the group should be automatically determined from the
+ register's type. If this is "general", "float", or "vector", the
+ corresponding "info" command should display this register's
+ value. It can be an arbitrary string, but should be limited to
+ alphanumeric characters and internal hyphens. Currently other
+ strings are ignored (treated as NULL). */
+ char *group;
+
+ /* The size of the register, in bits. */
+ int bitsize;
+
+ /* The type of the register. This string corresponds to either
+ a named type from the target description or a predefined
+ type from GDB. */
+ char *type;
+
+ /* The target-described type corresponding to TYPE, if found. */
+ struct tdesc_type *tdesc_type;
+} *tdesc_reg_p;
+DEF_VEC_P(tdesc_reg_p);
+
+/* A named type from a target description. */
+
+typedef struct tdesc_type_field
+{
+ char *name;
+ struct tdesc_type *type;
+ int start, end;
+} tdesc_type_field;
+DEF_VEC_O(tdesc_type_field);
+
+typedef struct tdesc_type_flag
+{
+ char *name;
+ int start;
+} tdesc_type_flag;
+DEF_VEC_O(tdesc_type_flag);
+
+typedef struct tdesc_type
+{
+ /* The name of this type. */
+ char *name;
+
+ /* Identify the kind of this type. */
+ enum
+ {
+ /* Predefined types. */
+ 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
+ } kind;
+
+ /* Kind-specific data. */
+ union
+ {
+ /* Vector type. */
+ struct
+ {
+ struct tdesc_type *type;
+ int count;
+ } v;
+
+ /* Struct or union type. */
+ struct
+ {
+ VEC(tdesc_type_field) *fields;
+ LONGEST size;
+ } u;
+
+ /* Flags type. */
+ struct
+ {
+ VEC(tdesc_type_flag) *flags;
+ LONGEST size;
+ } f;
+ } u;
+} *tdesc_type_p;
+DEF_VEC_P(tdesc_type_p);
+
+/* A feature from a target description. Each feature is a collection
+ of other elements, e.g. registers and types. */
+
+typedef struct tdesc_feature
+{
+ /* The name of this feature. It may be recognized by the architecture
+ support code. */
+ char *name;
+
+ /* The registers associated with this feature. */
+ VEC(tdesc_reg_p) *registers;
+
+ /* The types associated with this feature. */
+ VEC(tdesc_type_p) *types;
+} *tdesc_feature_p;
+DEF_VEC_P(tdesc_feature_p);
+
+/* A compatible architecture from a target description. */
+typedef const struct bfd_arch_info *arch_p;
+DEF_VEC_P(arch_p);
+
+/* A target description. */
+
struct target_desc
{
/* The architecture reported by the target, if any. */
const struct bfd_arch_info *arch;
+ /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN
+ otherwise. */
+ enum gdb_osabi osabi;
+
+ /* The list of compatible architectures reported by the target. */
+ VEC(arch_p) *compatible;
+
/* Any architecture-specific properties specified by the target. */
VEC(property_s) *properties;
+
+ /* The features associated with this target. */
+ VEC(tdesc_feature_p) *features;
+};
+
+/* Per-architecture data associated with a target description. The
+ target description may be shared by multiple architectures, but
+ this data is private to one gdbarch. */
+
+typedef struct tdesc_arch_reg
+{
+ struct tdesc_reg *reg;
+ struct type *type;
+} tdesc_arch_reg;
+DEF_VEC_O(tdesc_arch_reg);
+
+struct tdesc_arch_data
+{
+ /* A list of register/type pairs, indexed by GDB's internal register number.
+ During initialization of the gdbarch this list is used to store
+ registers which the architecture assigns a fixed register number.
+ Registers which are NULL in this array, or off the end, are
+ treated as zero-sized and nameless (i.e. placeholders in the
+ numbering). */
+ VEC(tdesc_arch_reg) *arch_regs;
+
+ /* Functions which report the register name, type, and reggroups for
+ pseudo-registers. */
+ gdbarch_register_name_ftype *pseudo_register_name;
+ gdbarch_register_type_ftype *pseudo_register_type;
+ gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p;
};
/* Global state. These variables are associated with the current
@@ -72,6 +254,11 @@ static const struct target_desc *current_target_desc;
static char *target_description_filename;
+/* A handle for architecture-specific data associated with the
+ target description (see struct tdesc_arch_data). */
+
+static struct gdbarch_data *tdesc_data;
+
/* Fetch the current target's description, and switch the current
architecture to one which incorporates that description. */
@@ -88,7 +275,7 @@ target_find_description (void)
/* The current architecture should not have any target description
specified. It should have been cleared, e.g. when we
disconnected from the previous target. */
- gdb_assert (gdbarch_target_desc (current_gdbarch) == NULL);
+ gdb_assert (gdbarch_target_desc (target_gdbarch) == NULL);
/* First try to fetch an XML description from the user-specified
file. */
@@ -116,7 +303,17 @@ target_find_description (void)
gdbarch_info_init (&info);
info.target_desc = current_target_desc;
if (!gdbarch_update_p (info))
- warning (_("Could not use target-supplied description"));
+ warning (_("Architecture rejected target-supplied description"));
+ else
+ {
+ struct tdesc_arch_data *data;
+
+ data = gdbarch_data (target_gdbarch, tdesc_data);
+ if (tdesc_has_registers (current_target_desc)
+ && data->arch_regs == NULL)
+ warning (_("Target-supplied registers are not supported "
+ "by the current architecture"));
+ }
}
/* Now that we know this description is usable, record that we
@@ -156,9 +353,31 @@ target_current_description (void)
return NULL;
}
+
+/* Return non-zero if this target description is compatible
+ with the given BFD architecture. */
+
+int
+tdesc_compatible_p (const struct target_desc *target_desc,
+ const struct bfd_arch_info *arch)
+{
+ const struct bfd_arch_info *compat;
+ int ix;
+
+ for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat);
+ ix++)
+ {
+ if (compat == arch
+ || arch->compatible (arch, compat)
+ || compat->compatible (compat, arch))
+ return 1;
+ }
+
+ return 0;
+}
-/* Direct accessors for feature sets. */
+/* Direct accessors for target descriptions. */
/* Return the string value of a property named KEY, or NULL if the
property was not specified. */
@@ -185,10 +404,987 @@ tdesc_architecture (const struct target_desc *target_desc)
{
return target_desc->arch;
}
+
+/* Return the OSABI associated with this target description, or
+ GDB_OSABI_UNKNOWN if no osabi was specified. */
+
+enum gdb_osabi
+tdesc_osabi (const struct target_desc *target_desc)
+{
+ return target_desc->osabi;
+}
+
+
+
+/* Return 1 if this target description includes any registers. */
+
+int
+tdesc_has_registers (const struct target_desc *target_desc)
+{
+ int ix;
+ struct tdesc_feature *feature;
+
+ if (target_desc == NULL)
+ return 0;
+
+ for (ix = 0;
+ VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature);
+ ix++)
+ if (! VEC_empty (tdesc_reg_p, feature->registers))
+ return 1;
+
+ return 0;
+}
+
+/* Return the feature with the given name, if present, or NULL if
+ the named feature is not found. */
+
+const struct tdesc_feature *
+tdesc_find_feature (const struct target_desc *target_desc,
+ const char *name)
+{
+ int ix;
+ struct tdesc_feature *feature;
+
+ for (ix = 0;
+ VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature);
+ ix++)
+ if (strcmp (feature->name, name) == 0)
+ return feature;
+
+ return NULL;
+}
+
+/* Return the name of FEATURE. */
+
+const char *
+tdesc_feature_name (const struct tdesc_feature *feature)
+{
+ return feature->name;
+}
+
+/* Predefined types. */
+static struct tdesc_type tdesc_predefined_types[] =
+{
+ { "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_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 }
+};
+
+/* Return the type associated with ID in the context of FEATURE, or
+ NULL if none. */
+
+struct tdesc_type *
+tdesc_named_type (const struct tdesc_feature *feature, const char *id)
+{
+ int ix;
+ struct tdesc_type *type;
+
+ /* First try target-defined types. */
+ for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++)
+ if (strcmp (type->name, id) == 0)
+ return type;
+
+ /* Next try the predefined types. */
+ for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++)
+ if (strcmp (tdesc_predefined_types[ix].name, id) == 0)
+ return &tdesc_predefined_types[ix];
+
+ return NULL;
+}
+
+/* Lookup type associated with ID. */
+
+struct type *
+tdesc_find_type (struct gdbarch *gdbarch, const char *id)
+{
+ struct tdesc_arch_reg *reg;
+ struct tdesc_arch_data *data;
+ int i, num_regs;
+
+ data = gdbarch_data (gdbarch, tdesc_data);
+ num_regs = VEC_length (tdesc_arch_reg, data->arch_regs);
+ for (i = 0; i < num_regs; i++)
+ {
+ reg = VEC_index (tdesc_arch_reg, data->arch_regs, i);
+ if (reg->reg
+ && reg->reg->tdesc_type
+ && reg->type
+ && strcmp (id, reg->reg->tdesc_type->name) == 0)
+ return reg->type;
+ }
+
+ return NULL;
+}
+
+/* Construct, if necessary, and return the GDB type implementing target
+ type TDESC_TYPE for architecture GDBARCH. */
+
+static struct type *
+tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type)
+{
+ struct type *type;
+
+ switch (tdesc_type->kind)
+ {
+ /* Predefined types. */
+ case TDESC_TYPE_INT8:
+ return builtin_type (gdbarch)->builtin_int8;
+
+ case TDESC_TYPE_INT16:
+ return builtin_type (gdbarch)->builtin_int16;
+
+ case TDESC_TYPE_INT32:
+ return builtin_type (gdbarch)->builtin_int32;
+
+ case TDESC_TYPE_INT64:
+ return builtin_type (gdbarch)->builtin_int64;
+
+ case TDESC_TYPE_INT128:
+ return builtin_type (gdbarch)->builtin_int128;
+
+ case TDESC_TYPE_UINT8:
+ return builtin_type (gdbarch)->builtin_uint8;
+
+ case TDESC_TYPE_UINT16:
+ return builtin_type (gdbarch)->builtin_uint16;
+
+ case TDESC_TYPE_UINT32:
+ return builtin_type (gdbarch)->builtin_uint32;
+
+ case TDESC_TYPE_UINT64:
+ return builtin_type (gdbarch)->builtin_uint64;
+
+ case TDESC_TYPE_UINT128:
+ return builtin_type (gdbarch)->builtin_uint128;
+
+ case TDESC_TYPE_CODE_PTR:
+ return builtin_type (gdbarch)->builtin_func_ptr;
+
+ case TDESC_TYPE_DATA_PTR:
+ return builtin_type (gdbarch)->builtin_data_ptr;
+
+ default:
+ break;
+ }
+
+ type = tdesc_find_type (gdbarch, tdesc_type->name);
+ if (type)
+ return type;
+
+ switch (tdesc_type->kind)
+ {
+ case TDESC_TYPE_IEEE_SINGLE:
+ return arch_float_type (gdbarch, -1, "builtin_type_ieee_single",
+ floatformats_ieee_single);
+
+ case TDESC_TYPE_IEEE_DOUBLE:
+ return arch_float_type (gdbarch, -1, "builtin_type_ieee_double",
+ floatformats_ieee_double);
+
+ case TDESC_TYPE_ARM_FPA_EXT:
+ return arch_float_type (gdbarch, -1, "builtin_type_arm_ext",
+ floatformats_arm_ext);
+
+ case TDESC_TYPE_I387_EXT:
+ return arch_float_type (gdbarch, -1, "builtin_type_i387_ext",
+ floatformats_i387_ext);
+
+ /* Types defined by a target feature. */
+ case TDESC_TYPE_VECTOR:
+ {
+ struct type *type, *field_type;
+
+ field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type);
+ type = init_vector_type (field_type, tdesc_type->u.v.count);
+ TYPE_NAME (type) = xstrdup (tdesc_type->name);
+
+ return type;
+ }
+
+ case TDESC_TYPE_STRUCT:
+ {
+ struct type *type, *field_type;
+ struct tdesc_type_field *f;
+ int ix;
+
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ TYPE_NAME (type) = xstrdup (tdesc_type->name);
+ TYPE_TAG_NAME (type) = TYPE_NAME (type);
+
+ for (ix = 0;
+ VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f);
+ ix++)
+ {
+ if (f->type == NULL)
+ {
+ /* Bitfield. */
+ struct field *fld;
+ struct type *field_type;
+ int bitsize, total_size;
+
+ /* This invariant should be preserved while creating
+ types. */
+ gdb_assert (tdesc_type->u.u.size != 0);
+ if (tdesc_type->u.u.size > 4)
+ field_type = builtin_type (gdbarch)->builtin_uint64;
+ else
+ field_type = builtin_type (gdbarch)->builtin_uint32;
+
+ fld = append_composite_type_field_raw (type, xstrdup (f->name),
+ field_type);
+
+ /* For little-endian, BITPOS counts from the LSB of
+ the structure and marks the LSB of the field. For
+ big-endian, BITPOS counts from the MSB of the
+ structure and marks the MSB of the field. Either
+ way, it is the number of bits to the "left" of the
+ field. To calculate this in big-endian, we need
+ the total size of the structure. */
+ bitsize = f->end - f->start + 1;
+ total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT;
+ if (gdbarch_bits_big_endian (gdbarch))
+ SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize);
+ else
+ SET_FIELD_BITPOS (fld[0], f->start);
+ FIELD_BITSIZE (fld[0]) = bitsize;
+ }
+ else
+ {
+ field_type = tdesc_gdb_type (gdbarch, f->type);
+ append_composite_type_field (type, xstrdup (f->name),
+ field_type);
+ }
+ }
+
+ if (tdesc_type->u.u.size != 0)
+ TYPE_LENGTH (type) = tdesc_type->u.u.size;
+ return type;
+ }
+
+ case TDESC_TYPE_UNION:
+ {
+ struct type *type, *field_type;
+ struct tdesc_type_field *f;
+ int ix;
+
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
+ TYPE_NAME (type) = xstrdup (tdesc_type->name);
+
+ for (ix = 0;
+ VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f);
+ ix++)
+ {
+ field_type = tdesc_gdb_type (gdbarch, f->type);
+ append_composite_type_field (type, xstrdup (f->name), field_type);
+
+ /* If any of the children of a union are vectors, flag the
+ union as a vector also. This allows e.g. a union of two
+ vector types to show up automatically in "info vector". */
+ if (TYPE_VECTOR (field_type))
+ TYPE_VECTOR (type) = 1;
+ }
+ return type;
+ }
+
+ case TDESC_TYPE_FLAGS:
+ {
+ struct tdesc_type_flag *f;
+ int ix;
+
+ type = arch_flags_type (gdbarch, tdesc_type->name,
+ tdesc_type->u.f.size);
+ for (ix = 0;
+ VEC_iterate (tdesc_type_flag, tdesc_type->u.f.flags, ix, f);
+ ix++)
+ /* Note that contrary to the function name, this call will
+ just set the properties of an already-allocated
+ field. */
+ append_flags_type_flag (type, f->start,
+ *f->name ? f->name : NULL);
+
+ return type;
+ }
+ }
+
+ internal_error (__FILE__, __LINE__,
+ "Type \"%s\" has an unknown kind %d",
+ tdesc_type->name, tdesc_type->kind);
+}
+
+
+/* Support for registers from target descriptions. */
+
+/* Construct the per-gdbarch data. */
+
+static void *
+tdesc_data_init (struct obstack *obstack)
+{
+ struct tdesc_arch_data *data;
+
+ data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data);
+ return data;
+}
+
+/* Similar, but for the temporary copy used during architecture
+ initialization. */
+
+struct tdesc_arch_data *
+tdesc_data_alloc (void)
+{
+ return XZALLOC (struct tdesc_arch_data);
+}
+
+/* Free something allocated by tdesc_data_alloc, if it is not going
+ to be used (for instance if it was unsuitable for the
+ architecture). */
+
+void
+tdesc_data_cleanup (void *data_untyped)
+{
+ struct tdesc_arch_data *data = data_untyped;
+
+ VEC_free (tdesc_arch_reg, data->arch_regs);
+ xfree (data);
+}
+
+/* Search FEATURE for a register named NAME. */
+
+static struct tdesc_reg *
+tdesc_find_register_early (const struct tdesc_feature *feature,
+ const char *name)
+{
+ int ixr;
+ struct tdesc_reg *reg;
+
+ for (ixr = 0;
+ VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg);
+ ixr++)
+ if (strcasecmp (reg->name, name) == 0)
+ return reg;
+
+ return NULL;
+}
+
+/* Search FEATURE for a register named NAME. Assign REGNO to it. */
+
+int
+tdesc_numbered_register (const struct tdesc_feature *feature,
+ struct tdesc_arch_data *data,
+ int regno, const char *name)
+{
+ struct tdesc_arch_reg arch_reg = { 0 };
+ struct tdesc_reg *reg = tdesc_find_register_early (feature, name);
+
+ if (reg == NULL)
+ return 0;
+
+ /* Make sure the vector includes a REGNO'th element. */
+ while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs))
+ VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg);
+
+ arch_reg.reg = reg;
+ VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg);
+ return 1;
+}
+
+/* Search FEATURE for a register named NAME, but do not assign a fixed
+ register number to it. */
+
+int
+tdesc_unnumbered_register (const struct tdesc_feature *feature,
+ const char *name)
+{
+ struct tdesc_reg *reg = tdesc_find_register_early (feature, name);
+
+ if (reg == NULL)
+ return 0;
+
+ return 1;
+}
+
+/* Search FEATURE for a register whose name is in NAMES and assign
+ REGNO to it. */
+
+int
+tdesc_numbered_register_choices (const struct tdesc_feature *feature,
+ struct tdesc_arch_data *data,
+ int regno, const char *const names[])
+{
+ int i;
+
+ for (i = 0; names[i] != NULL; i++)
+ if (tdesc_numbered_register (feature, data, regno, names[i]))
+ return 1;
+
+ return 0;
+}
+
+/* Search FEATURE for a register named NAME, and return its size in
+ bits. The register must exist. */
+
+int
+tdesc_register_size (const struct tdesc_feature *feature,
+ const char *name)
+{
+ struct tdesc_reg *reg = tdesc_find_register_early (feature, name);
+
+ gdb_assert (reg != NULL);
+ return reg->bitsize;
+}
+
+/* Look up a register by its GDB internal register number. */
+
+static struct tdesc_arch_reg *
+tdesc_find_arch_register (struct gdbarch *gdbarch, int regno)
+{
+ struct tdesc_arch_data *data;
+
+ data = gdbarch_data (gdbarch, tdesc_data);
+ if (regno < VEC_length (tdesc_arch_reg, data->arch_regs))
+ return VEC_index (tdesc_arch_reg, data->arch_regs, regno);
+ else
+ return NULL;
+}
+
+static struct tdesc_reg *
+tdesc_find_register (struct gdbarch *gdbarch, int regno)
+{
+ struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno);
+
+ return reg? reg->reg : NULL;
+}
+
+/* Return the name of register REGNO, from the target description or
+ from an architecture-provided pseudo_register_name method. */
+
+const char *
+tdesc_register_name (struct gdbarch *gdbarch, int regno)
+{
+ struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno);
+ int num_regs = gdbarch_num_regs (gdbarch);
+ int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch);
+
+ if (reg != NULL)
+ return reg->name;
+
+ if (regno >= num_regs && regno < num_regs + num_pseudo_regs)
+ {
+ struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data);
+
+ gdb_assert (data->pseudo_register_name != NULL);
+ return data->pseudo_register_name (gdbarch, regno);
+ }
+
+ return "";
+}
+
+struct type *
+tdesc_register_type (struct gdbarch *gdbarch, int regno)
+{
+ struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno);
+ struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL;
+ int num_regs = gdbarch_num_regs (gdbarch);
+ int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch);
+
+ if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs)
+ {
+ struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data);
+
+ gdb_assert (data->pseudo_register_type != NULL);
+ return data->pseudo_register_type (gdbarch, regno);
+ }
+
+ if (reg == NULL)
+ /* Return "int0_t", since "void" has a misleading size of one. */
+ return builtin_type (gdbarch)->builtin_int0;
+
+ if (arch_reg->type == NULL)
+ {
+ /* First check for a predefined or target defined type. */
+ if (reg->tdesc_type)
+ arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type);
+
+ /* Next try size-sensitive type shortcuts. */
+ else if (strcmp (reg->type, "float") == 0)
+ {
+ if (reg->bitsize == gdbarch_float_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_float;
+ else if (reg->bitsize == gdbarch_double_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_double;
+ else if (reg->bitsize == gdbarch_long_double_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_long_double;
+ else
+ {
+ warning (_("Register \"%s\" has an unsupported size (%d bits)"),
+ reg->name, reg->bitsize);
+ arch_reg->type = builtin_type (gdbarch)->builtin_double;
+ }
+ }
+ else if (strcmp (reg->type, "int") == 0)
+ {
+ if (reg->bitsize == gdbarch_long_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_long;
+ else if (reg->bitsize == TARGET_CHAR_BIT)
+ arch_reg->type = builtin_type (gdbarch)->builtin_char;
+ else if (reg->bitsize == gdbarch_short_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_short;
+ else if (reg->bitsize == gdbarch_int_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_int;
+ else if (reg->bitsize == gdbarch_long_long_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_long_long;
+ else if (reg->bitsize == gdbarch_ptr_bit (gdbarch))
+ /* A bit desperate by this point... */
+ arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr;
+ else
+ {
+ warning (_("Register \"%s\" has an unsupported size (%d bits)"),
+ reg->name, reg->bitsize);
+ arch_reg->type = builtin_type (gdbarch)->builtin_long;
+ }
+ }
+
+ if (arch_reg->type == NULL)
+ internal_error (__FILE__, __LINE__,
+ "Register \"%s\" has an unknown type \"%s\"",
+ reg->name, reg->type);
+ }
+
+ return arch_reg->type;
+}
+
+static int
+tdesc_remote_register_number (struct gdbarch *gdbarch, int regno)
+{
+ struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno);
+
+ if (reg != NULL)
+ return reg->target_regnum;
+ else
+ return -1;
+}
+
+/* Check whether REGNUM is a member of REGGROUP. Registers from the
+ target description may be classified as general, float, or vector.
+ Unlike a gdbarch register_reggroup_p method, this function will
+ return -1 if it does not know; the caller should handle registers
+ with no specified group.
+
+ Arbitrary strings (other than "general", "float", and "vector")
+ from the description are not used; they cause the register to be
+ displayed in "info all-registers" but excluded from "info
+ registers" et al. The names of containing features are also not
+ used. This might be extended to display registers in some more
+ useful groupings.
+
+ The save-restore flag is also implemented here. */
+
+int
+tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno,
+ struct reggroup *reggroup)
+{
+ struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno);
+
+ if (reg != NULL && reg->group != NULL)
+ {
+ int general_p = 0, float_p = 0, vector_p = 0;
+
+ if (strcmp (reg->group, "general") == 0)
+ general_p = 1;
+ else if (strcmp (reg->group, "float") == 0)
+ float_p = 1;
+ else if (strcmp (reg->group, "vector") == 0)
+ vector_p = 1;
+
+ if (reggroup == float_reggroup)
+ return float_p;
+
+ if (reggroup == vector_reggroup)
+ return vector_p;
+
+ if (reggroup == general_reggroup)
+ return general_p;
+ }
+
+ if (reg != NULL
+ && (reggroup == save_reggroup || reggroup == restore_reggroup))
+ return reg->save_restore;
+
+ return -1;
+}
+
+/* Check whether REGNUM is a member of REGGROUP. Registers with no
+ group specified go to the default reggroup function and are handled
+ by type. */
+
+static int
+tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno,
+ struct reggroup *reggroup)
+{
+ int num_regs = gdbarch_num_regs (gdbarch);
+ int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch);
+ int ret;
+
+ if (regno >= num_regs && regno < num_regs + num_pseudo_regs)
+ {
+ struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data);
+
+ if (data->pseudo_register_reggroup_p != NULL)
+ return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup);
+ /* Otherwise fall through to the default reggroup_p. */
+ }
+
+ ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup);
+ if (ret != -1)
+ return ret;
+
+ return default_register_reggroup_p (gdbarch, regno, reggroup);
+}
+
+/* Record architecture-specific functions to call for pseudo-register
+ support. */
+
+void
+set_tdesc_pseudo_register_name (struct gdbarch *gdbarch,
+ gdbarch_register_name_ftype *pseudo_name)
+{
+ struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data);
+
+ data->pseudo_register_name = pseudo_name;
+}
+
+void
+set_tdesc_pseudo_register_type (struct gdbarch *gdbarch,
+ gdbarch_register_type_ftype *pseudo_type)
+{
+ struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data);
+
+ data->pseudo_register_type = pseudo_type;
+}
+
+void
+set_tdesc_pseudo_register_reggroup_p
+ (struct gdbarch *gdbarch,
+ gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p)
+{
+ struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data);
+
+ data->pseudo_register_reggroup_p = pseudo_reggroup_p;
+}
+
+/* Update GDBARCH to use the target description for registers. */
+
+void
+tdesc_use_registers (struct gdbarch *gdbarch,
+ const struct target_desc *target_desc,
+ struct tdesc_arch_data *early_data)
+{
+ int num_regs = gdbarch_num_regs (gdbarch);
+ int ixf, ixr;
+ struct tdesc_feature *feature;
+ struct tdesc_reg *reg;
+ struct tdesc_arch_data *data;
+ struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 };
+ htab_t reg_hash;
+
+ /* We can't use the description for registers if it doesn't describe
+ any. This function should only be called after validating
+ registers, so the caller should know that registers are
+ included. */
+ gdb_assert (tdesc_has_registers (target_desc));
+
+ data = gdbarch_data (gdbarch, tdesc_data);
+ data->arch_regs = early_data->arch_regs;
+ xfree (early_data);
+
+ /* Build up a set of all registers, so that we can assign register
+ numbers where needed. The hash table expands as necessary, so
+ the initial size is arbitrary. */
+ reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL);
+ for (ixf = 0;
+ VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature);
+ ixf++)
+ for (ixr = 0;
+ VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg);
+ ixr++)
+ {
+ void **slot = htab_find_slot (reg_hash, reg, INSERT);
+
+ *slot = reg;
+ }
+
+ /* Remove any registers which were assigned numbers by the
+ architecture. */
+ for (ixr = 0;
+ VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg);
+ ixr++)
+ if (arch_reg->reg)
+ htab_remove_elt (reg_hash, arch_reg->reg);
+
+ /* Assign numbers to the remaining registers and add them to the
+ list of registers. The new numbers are always above gdbarch_num_regs.
+ Iterate over the features, not the hash table, so that the order
+ matches that in the target description. */
+
+ gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs);
+ while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs)
+ VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg);
+ for (ixf = 0;
+ VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature);
+ ixf++)
+ for (ixr = 0;
+ VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg);
+ ixr++)
+ if (htab_find (reg_hash, reg) != NULL)
+ {
+ new_arch_reg.reg = reg;
+ VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg);
+ num_regs++;
+ }
+
+ htab_delete (reg_hash);
+
+ /* Update the architecture. */
+ set_gdbarch_num_regs (gdbarch, num_regs);
+ set_gdbarch_register_name (gdbarch, tdesc_register_name);
+ set_gdbarch_register_type (gdbarch, tdesc_register_type);
+ set_gdbarch_remote_register_number (gdbarch,
+ tdesc_remote_register_number);
+ set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p);
+}
/* Methods for constructing a target description. */
+static void
+tdesc_free_reg (struct tdesc_reg *reg)
+{
+ xfree (reg->name);
+ xfree (reg->type);
+ xfree (reg->group);
+ xfree (reg);
+}
+
+void
+tdesc_create_reg (struct tdesc_feature *feature, const char *name,
+ int regnum, int save_restore, const char *group,
+ int bitsize, const char *type)
+{
+ struct tdesc_reg *reg = XZALLOC (struct tdesc_reg);
+
+ reg->name = xstrdup (name);
+ reg->target_regnum = regnum;
+ reg->save_restore = save_restore;
+ reg->group = group ? xstrdup (group) : NULL;
+ reg->bitsize = bitsize;
+ reg->type = type ? xstrdup (type) : xstrdup ("");
+
+ /* 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. */
+ reg->tdesc_type = tdesc_named_type (feature, reg->type);
+
+ VEC_safe_push (tdesc_reg_p, feature->registers, reg);
+}
+
+static void
+tdesc_free_type (struct tdesc_type *type)
+{
+ switch (type->kind)
+ {
+ case TDESC_TYPE_STRUCT:
+ case TDESC_TYPE_UNION:
+ {
+ struct tdesc_type_field *f;
+ int ix;
+
+ for (ix = 0;
+ VEC_iterate (tdesc_type_field, type->u.u.fields, ix, f);
+ ix++)
+ xfree (f->name);
+
+ VEC_free (tdesc_type_field, type->u.u.fields);
+ }
+ break;
+
+ case TDESC_TYPE_FLAGS:
+ {
+ struct tdesc_type_flag *f;
+ int ix;
+
+ for (ix = 0;
+ VEC_iterate (tdesc_type_flag, type->u.f.flags, ix, f);
+ ix++)
+ xfree (f->name);
+
+ VEC_free (tdesc_type_flag, type->u.f.flags);
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ xfree (type->name);
+ xfree (type);
+}
+
+struct tdesc_type *
+tdesc_create_vector (struct tdesc_feature *feature, const char *name,
+ struct tdesc_type *field_type, int count)
+{
+ struct tdesc_type *type = XZALLOC (struct tdesc_type);
+
+ type->name = xstrdup (name);
+ type->kind = TDESC_TYPE_VECTOR;
+ type->u.v.type = field_type;
+ type->u.v.count = count;
+
+ VEC_safe_push (tdesc_type_p, feature->types, type);
+ return type;
+}
+
+struct tdesc_type *
+tdesc_create_struct (struct tdesc_feature *feature, const char *name)
+{
+ struct tdesc_type *type = XZALLOC (struct tdesc_type);
+
+ type->name = xstrdup (name);
+ type->kind = TDESC_TYPE_STRUCT;
+
+ VEC_safe_push (tdesc_type_p, feature->types, type);
+ return type;
+}
+
+/* Set the total length of TYPE. Structs which contain bitfields may
+ omit the reserved bits, so the end of the last field may not
+ suffice. */
+
+void
+tdesc_set_struct_size (struct tdesc_type *type, LONGEST size)
+{
+ gdb_assert (type->kind == TDESC_TYPE_STRUCT);
+ type->u.u.size = size;
+}
+
+struct tdesc_type *
+tdesc_create_union (struct tdesc_feature *feature, const char *name)
+{
+ struct tdesc_type *type = XZALLOC (struct tdesc_type);
+
+ type->name = xstrdup (name);
+ type->kind = TDESC_TYPE_UNION;
+
+ VEC_safe_push (tdesc_type_p, feature->types, type);
+ return type;
+}
+
+struct tdesc_type *
+tdesc_create_flags (struct tdesc_feature *feature, const char *name,
+ LONGEST size)
+{
+ struct tdesc_type *type = XZALLOC (struct tdesc_type);
+
+ type->name = xstrdup (name);
+ type->kind = TDESC_TYPE_FLAGS;
+ type->u.f.size = size;
+
+ VEC_safe_push (tdesc_type_p, feature->types, type);
+ return type;
+}
+
+/* Add a new field. Return a temporary pointer to the field, which
+ is only valid until the next call to tdesc_add_field (the vector
+ might be reallocated). */
+
+void
+tdesc_add_field (struct tdesc_type *type, const char *field_name,
+ struct tdesc_type *field_type)
+{
+ struct tdesc_type_field f = { 0 };
+
+ gdb_assert (type->kind == TDESC_TYPE_UNION
+ || type->kind == TDESC_TYPE_STRUCT);
+
+ f.name = xstrdup (field_name);
+ f.type = field_type;
+
+ VEC_safe_push (tdesc_type_field, type->u.u.fields, &f);
+}
+
+/* Add a new bitfield. */
+
+void
+tdesc_add_bitfield (struct tdesc_type *type, const char *field_name,
+ int start, int end)
+{
+ struct tdesc_type_field f = { 0 };
+
+ gdb_assert (type->kind == TDESC_TYPE_STRUCT);
+
+ f.name = xstrdup (field_name);
+ f.start = start;
+ f.end = end;
+
+ VEC_safe_push (tdesc_type_field, type->u.u.fields, &f);
+}
+
+void
+tdesc_add_flag (struct tdesc_type *type, int start,
+ const char *flag_name)
+{
+ struct tdesc_type_flag f = { 0 };
+
+ gdb_assert (type->kind == TDESC_TYPE_FLAGS);
+
+ f.name = xstrdup (flag_name);
+ f.start = start;
+
+ VEC_safe_push (tdesc_type_flag, type->u.f.flags, &f);
+}
+
+static void
+tdesc_free_feature (struct tdesc_feature *feature)
+{
+ struct tdesc_reg *reg;
+ struct tdesc_type *type;
+ int ix;
+
+ for (ix = 0; VEC_iterate (tdesc_reg_p, feature->registers, ix, reg); ix++)
+ tdesc_free_reg (reg);
+ VEC_free (tdesc_reg_p, feature->registers);
+
+ for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++)
+ tdesc_free_type (type);
+ VEC_free (tdesc_type_p, feature->types);
+
+ xfree (feature->name);
+ xfree (feature);
+}
+
+struct tdesc_feature *
+tdesc_create_feature (struct target_desc *tdesc, const char *name)
+{
+ struct tdesc_feature *new_feature = XZALLOC (struct tdesc_feature);
+
+ new_feature->name = xstrdup (name);
+
+ VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature);
+ return new_feature;
+}
+
struct target_desc *
allocate_target_description (void)
{
@@ -199,9 +1395,16 @@ static void
free_target_description (void *arg)
{
struct target_desc *target_desc = arg;
+ struct tdesc_feature *feature;
struct property *prop;
int ix;
+ for (ix = 0;
+ VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature);
+ ix++)
+ tdesc_free_feature (feature);
+ VEC_free (tdesc_feature_p, target_desc->features);
+
for (ix = 0;
VEC_iterate (property_s, target_desc->properties, ix, prop);
ix++)
@@ -211,6 +1414,8 @@ free_target_description (void *arg)
}
VEC_free (property_s, target_desc->properties);
+ VEC_free (arch_p, target_desc->compatible);
+
xfree (target_desc);
}
@@ -220,6 +1425,30 @@ make_cleanup_free_target_description (struct target_desc *target_desc)
return make_cleanup (free_target_description, target_desc);
}
+void
+tdesc_add_compatible (struct target_desc *target_desc,
+ const struct bfd_arch_info *compatible)
+{
+ const struct bfd_arch_info *compat;
+ int ix;
+
+ /* If this instance of GDB is compiled without BFD support for the
+ compatible architecture, simply ignore it -- we would not be able
+ to handle it anyway. */
+ if (compatible == NULL)
+ return;
+
+ for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat);
+ ix++)
+ if (compat == compatible)
+ internal_error (__FILE__, __LINE__,
+ _("Attempted to add duplicate "
+ "compatible architecture \"%s\""),
+ compatible->printable_name);
+
+ VEC_safe_push (arch_p, target_desc->compatible, compatible);
+}
+
void
set_tdesc_property (struct target_desc *target_desc,
const char *key, const char *value)
@@ -246,6 +1475,12 @@ set_tdesc_architecture (struct target_desc *target_desc,
{
target_desc->arch = arch;
}
+
+void
+set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi)
+{
+ target_desc->osabi = osabi;
+}
static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist;
@@ -285,12 +1520,11 @@ show_tdesc_filename_cmd (struct ui_file *file, int from_tty,
const char *value)
{
if (value != NULL && *value != '\0')
- printf_filtered (_("\
-The target description will be read from \"%s\".\n"),
+ printf_filtered (_("The target description will be read from \"%s\".\n"),
value);
else
- printf_filtered (_("\
-The target description will be read from the target.\n"));
+ printf_filtered (_("The target description will be "
+ "read from the target.\n"));
}
static void
@@ -302,9 +1536,212 @@ unset_tdesc_filename_cmd (char *args, int from_tty)
target_find_description ();
}
+static void
+maint_print_c_tdesc_cmd (char *args, int from_tty)
+{
+ const struct target_desc *tdesc;
+ const struct bfd_arch_info *compatible;
+ const char *filename, *inp;
+ char *function, *outp;
+ struct property *prop;
+ struct tdesc_feature *feature;
+ struct tdesc_reg *reg;
+ struct tdesc_type *type;
+ struct tdesc_type_field *f;
+ struct tdesc_type_flag *flag;
+ int ix, ix2, ix3;
+ int printed_field_type = 0;
+
+ /* Use the global target-supplied description, not the current
+ architecture's. This lets a GDB for one architecture generate C
+ for another architecture's description, even though the gdbarch
+ initialization code will reject the new description. */
+ tdesc = current_target_desc;
+ if (tdesc == NULL)
+ error (_("There is no target description to print."));
+
+ if (target_description_filename == NULL)
+ error (_("The current target description did not come from an XML file."));
+
+ filename = lbasename (target_description_filename);
+ function = alloca (strlen (filename) + 1);
+ for (inp = filename, outp = function; *inp != '\0'; inp++)
+ if (*inp == '.')
+ break;
+ else if (*inp == '-')
+ *outp++ = '_';
+ else
+ *outp++ = *inp;
+ *outp = '\0';
+
+ /* Standard boilerplate. */
+ printf_unfiltered ("/* THIS FILE IS GENERATED. Original: %s */\n\n",
+ filename);
+ printf_unfiltered ("#include \"defs.h\"\n");
+ printf_unfiltered ("#include \"osabi.h\"\n");
+ printf_unfiltered ("#include \"target-descriptions.h\"\n");
+ printf_unfiltered ("\n");
+
+ printf_unfiltered ("struct target_desc *tdesc_%s;\n", function);
+ printf_unfiltered ("static void\n");
+ printf_unfiltered ("initialize_tdesc_%s (void)\n", function);
+ printf_unfiltered ("{\n");
+ printf_unfiltered
+ (" struct target_desc *result = allocate_target_description ();\n");
+ printf_unfiltered (" struct tdesc_feature *feature;\n");
+
+ /* Now we do some "filtering" in order to know which variables to
+ declare. This is needed because otherwise we would declare unused
+ variables `field_type' and `type'. */
+ for (ix = 0;
+ VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature);
+ ix++)
+ {
+ int printed_desc_type = 0;
+
+ for (ix2 = 0;
+ VEC_iterate (tdesc_type_p, feature->types, ix2, type);
+ ix2++)
+ {
+ if (!printed_field_type)
+ {
+ printf_unfiltered (" struct tdesc_type *field_type;\n");
+ printed_field_type = 1;
+ }
+
+ if (type->kind == TDESC_TYPE_UNION
+ && VEC_length (tdesc_type_field, type->u.u.fields) > 0)
+ {
+ printf_unfiltered (" struct tdesc_type *type;\n");
+ printed_desc_type = 1;
+ break;
+ }
+ }
+
+ if (printed_desc_type)
+ break;
+ }
+
+ printf_unfiltered ("\n");
+
+ if (tdesc_architecture (tdesc) != NULL)
+ {
+ printf_unfiltered
+ (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n",
+ tdesc_architecture (tdesc)->printable_name);
+ printf_unfiltered ("\n");
+ }
+
+ if (tdesc_osabi (tdesc) > GDB_OSABI_UNKNOWN
+ && tdesc_osabi (tdesc) < GDB_OSABI_INVALID)
+ {
+ printf_unfiltered
+ (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n",
+ gdbarch_osabi_name (tdesc_osabi (tdesc)));
+ printf_unfiltered ("\n");
+ }
+
+ for (ix = 0; VEC_iterate (arch_p, tdesc->compatible, ix, compatible);
+ ix++)
+ {
+ printf_unfiltered
+ (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n",
+ compatible->printable_name);
+ }
+ if (ix)
+ printf_unfiltered ("\n");
+
+ for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop);
+ ix++)
+ {
+ printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n",
+ prop->key, prop->value);
+ }
+
+ for (ix = 0;
+ VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature);
+ ix++)
+ {
+ printf_unfiltered (" \
+feature = tdesc_create_feature (result, \"%s\");\n",
+ feature->name);
+
+ for (ix2 = 0;
+ VEC_iterate (tdesc_type_p, feature->types, ix2, type);
+ ix2++)
+ {
+ switch (type->kind)
+ {
+ case TDESC_TYPE_VECTOR:
+ printf_unfiltered
+ (" field_type = tdesc_named_type (feature, \"%s\");\n",
+ type->u.v.type->name);
+ printf_unfiltered
+ (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n",
+ type->name, type->u.v.count);
+ break;
+ case TDESC_TYPE_UNION:
+ printf_unfiltered
+ (" type = tdesc_create_union (feature, \"%s\");\n",
+ type->name);
+ for (ix3 = 0;
+ VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f);
+ ix3++)
+ {
+ printf_unfiltered
+ (" field_type = tdesc_named_type (feature, \"%s\");\n",
+ f->type->name);
+ printf_unfiltered
+ (" tdesc_add_field (type, \"%s\", field_type);\n",
+ f->name);
+ }
+ break;
+ case TDESC_TYPE_FLAGS:
+ printf_unfiltered
+ (" field_type = tdesc_create_flags (feature, \"%s\", %d);\n",
+ type->name, (int) type->u.f.size);
+ for (ix3 = 0;
+ VEC_iterate (tdesc_type_flag, type->u.f.flags, ix3,
+ flag);
+ ix3++)
+ printf_unfiltered
+ (" tdesc_add_flag (field_type, %d, \"%s\");\n",
+ flag->start, flag->name);
+ break;
+ default:
+ error (_("C output is not supported type \"%s\"."), type->name);
+ }
+ printf_unfiltered ("\n");
+ }
+
+ for (ix2 = 0;
+ VEC_iterate (tdesc_reg_p, feature->registers, ix2, reg);
+ ix2++)
+ {
+ printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ",
+ reg->name, reg->target_regnum, reg->save_restore);
+ if (reg->group)
+ printf_unfiltered ("\"%s\", ", reg->group);
+ else
+ printf_unfiltered ("NULL, ");
+ printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type);
+ }
+
+ printf_unfiltered ("\n");
+ }
+
+ printf_unfiltered (" tdesc_%s = result;\n", function);
+ printf_unfiltered ("}\n");
+}
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_target_descriptions;
+
void
_initialize_target_descriptions (void)
{
+ tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init);
+
add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\
Set target description specific variables."),
&tdesc_set_cmdlist, "set tdesc ",
@@ -333,4 +1770,8 @@ file instead of querying the remote target."),
Unset the file to read for an XML target description. When unset,\n\
GDB will read the description from the target."),
&tdesc_unset_cmdlist);
+
+ add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\
+Print the current target description as a C source file."),
+ &maintenanceprintlist);
}