X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Ftarget-descriptions.c;h=953748be706bf4de78026d29f49c4a587b109f50;hb=ee01b6652ad55437e777fb7e6b1745782dc205a4;hp=9699b7d47c94884ae7a13b21b3d6dfcfad9f6d28;hpb=6aba47ca06d9150c6196a374b745c2711b46e045;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c index 9699b7d47c..953748be70 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) 2006-2014 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, @@ -17,49 +17,306 @@ 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" +#include "inferior.h" /* Types. */ typedef struct property { - const char *key; - const char *value; + char *key; + char *value; } 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; +}; + +/* Info about an inferior's target description. There's one of these + for each inferior. */ + +struct target_desc_info +{ + /* A flag indicating that a description has already been fetched + from the target, so it should not be queried again. */ + + int fetched; + + /* The description fetched from the target, or NULL if the target + did not supply any description. Only valid when + target_desc_fetched is set. Only the description initialization + code should access this; normally, the description should be + accessed through the gdbarch object. */ + + const struct target_desc *tdesc; + + /* The filename to read a target description from, as set by "set + tdesc filename ..." */ + + char *filename; }; -/* Global state. These variables are associated with the current - target; if GDB adds support for multiple simultaneous targets, then - these variables should become target-specific data. */ +/* Get the inferior INF's target description info, allocating one on + the stop if necessary. */ + +static struct target_desc_info * +get_tdesc_info (struct inferior *inf) +{ + if (inf->tdesc_info == NULL) + inf->tdesc_info = XCNEW (struct target_desc_info); + return inf->tdesc_info; +} + +/* A handle for architecture-specific data associated with the + target description (see struct tdesc_arch_data). */ + +static struct gdbarch_data *tdesc_data; + +/* See target-descriptions.h. */ + +int +target_desc_info_from_user_p (struct target_desc_info *info) +{ + return info != NULL && info->filename != NULL; +} + +/* See target-descriptions.h. */ + +void +copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) +{ + struct target_desc_info *src = get_tdesc_info (srcinf); + struct target_desc_info *dest = get_tdesc_info (destinf); + + dest->fetched = src->fetched; + dest->tdesc = src->tdesc; + dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; +} + +/* See target-descriptions.h. */ + +void +target_desc_info_free (struct target_desc_info *tdesc_info) +{ + if (tdesc_info != NULL) + { + xfree (tdesc_info->filename); + xfree (tdesc_info); + } +} -/* A flag indicating that a description has already been fetched from - the current target, so it should not be queried again. */ +/* Convenience helper macros. */ -static int target_desc_fetched; +#define target_desc_fetched \ + get_tdesc_info (current_inferior ())->fetched +#define current_target_desc \ + get_tdesc_info (current_inferior ())->tdesc +#define target_description_filename \ + get_tdesc_info (current_inferior ())->filename -/* The description fetched from the current target, or NULL if the - current target did not supply any description. Only valid when - target_desc_fetched is set. Only the description initialization - code should access this; normally, the description should be - accessed through the gdbarch object. */ +/* The string manipulated by the "set tdesc filename ..." command. */ -static const struct target_desc *current_target_desc; +static char *tdesc_filename_cmd_string; /* Fetch the current target's description, and switch the current architecture to one which incorporates that description. */ @@ -77,9 +334,24 @@ 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. */ + current_target_desc = NULL; + if (target_description_filename != NULL + && *target_description_filename != '\0') + current_target_desc + = file_read_description_xml (target_description_filename); + + /* Next try to read the description from the current target using + target objects. */ + if (current_target_desc == NULL) + current_target_desc = target_read_description_xml (¤t_target); - current_target_desc = target_read_description (¤t_target); + /* If that failed try a target-specific hook. */ + if (current_target_desc == NULL) + current_target_desc = target_read_description (¤t_target); /* If a non-NULL description was returned, then update the current architecture. */ @@ -90,7 +362,17 @@ 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 @@ -131,6 +413,31 @@ 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 target descriptions. */ + /* Return the string value of a property named KEY, or NULL if the property was not specified. */ @@ -148,30 +455,1420 @@ tdesc_property (const struct target_desc *target_desc, const char *key) return NULL; } -/* Methods for constructing a target description. */ +/* Return the BFD architecture associated with this target + description, or NULL if no architecture was specified. */ -struct target_desc * -allocate_target_description (void) +const struct bfd_arch_info * +tdesc_architecture (const struct target_desc *target_desc) { - return XZALLOC (struct target_desc); + return target_desc->arch; } -void -set_tdesc_property (struct target_desc *target_desc, - const char *key, const char *value) +/* 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) { - struct property *prop, new_prop; int ix; + struct tdesc_feature *feature; - gdb_assert (key != NULL && value != NULL); + if (target_desc == NULL) + return 0; - for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); + for (ix = 0; + VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); ix++) - if (strcmp (prop->key, key) == 0) - internal_error (__FILE__, __LINE__, - _("Attempted to add duplicate property \"%s\""), key); + if (! VEC_empty (tdesc_reg_p, feature->registers)) + return 1; - new_prop.key = key; - new_prop.value = value; - VEC_safe_push (property_s, target_desc->properties, &new_prop); + 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 XCNEW (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 = XCNEW (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 = XCNEW (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 = XCNEW (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 = XCNEW (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 = XCNEW (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 = XCNEW (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) +{ + return XCNEW (struct target_desc); +} + +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++) + { + xfree (prop->key); + xfree (prop->value); + } + VEC_free (property_s, target_desc->properties); + + VEC_free (arch_p, target_desc->compatible); + + xfree (target_desc); +} + +struct cleanup * +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) +{ + struct property *prop, new_prop; + int ix; + + gdb_assert (key != NULL && value != NULL); + + for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); + ix++) + if (strcmp (prop->key, key) == 0) + internal_error (__FILE__, __LINE__, + _("Attempted to add duplicate property \"%s\""), key); + + new_prop.key = xstrdup (key); + new_prop.value = xstrdup (value); + VEC_safe_push (property_s, target_desc->properties, &new_prop); +} + +void +set_tdesc_architecture (struct target_desc *target_desc, + const struct bfd_arch_info *arch) +{ + 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; +static struct cmd_list_element *tdesc_unset_cmdlist; + +/* Helper functions for the CLI commands. */ + +static void +set_tdesc_cmd (char *args, int from_tty) +{ + help_list (tdesc_set_cmdlist, "set tdesc ", -1, gdb_stdout); +} + +static void +show_tdesc_cmd (char *args, int from_tty) +{ + cmd_show_list (tdesc_show_cmdlist, from_tty, ""); +} + +static void +unset_tdesc_cmd (char *args, int from_tty) +{ + help_list (tdesc_unset_cmdlist, "unset tdesc ", -1, gdb_stdout); +} + +static void +set_tdesc_filename_cmd (char *args, int from_tty, + struct cmd_list_element *c) +{ + xfree (target_description_filename); + target_description_filename = xstrdup (tdesc_filename_cmd_string); + + target_clear_description (); + target_find_description (); +} + +static void +show_tdesc_filename_cmd (struct ui_file *file, int from_tty, + struct cmd_list_element *c, + const char *value) +{ + value = target_description_filename; + + if (value != NULL && *value != '\0') + 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")); +} + +static void +unset_tdesc_filename_cmd (char *args, int from_tty) +{ + xfree (target_description_filename); + target_description_filename = NULL; + target_clear_description (); + 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. " + "-*- buffer-read-only: t -*- vi" + ":set ro:\n"); + printf_unfiltered (" 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 + || type->kind == TDESC_TYPE_STRUCT) + && 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_STRUCT: + printf_unfiltered + (" type = tdesc_create_struct (feature, \"%s\");\n", + type->name); + if (type->u.u.size != 0) + printf_unfiltered + (" tdesc_set_struct_size (type, %s);\n", + plongest (type->u.u.size)); + for (ix3 = 0; + VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); + ix3++) + { + /* Going first for implicitly sized types, else part handles + bitfields. As reported on xml-tdesc.c implicitly sized types + cannot contain a bitfield. */ + if (f->type != NULL) + { + 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); + } + else + printf_unfiltered + (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", + f->name, f->start, f->end); + } + 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 ", + 0 /* allow-unknown */, &setlist); + add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ +Show target description specific variables."), + &tdesc_show_cmdlist, "show tdesc ", + 0 /* allow-unknown */, &showlist); + add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ +Unset target description specific variables."), + &tdesc_unset_cmdlist, "unset tdesc ", + 0 /* allow-unknown */, &unsetlist); + + add_setshow_filename_cmd ("filename", class_obscure, + &tdesc_filename_cmd_string, + _("\ +Set the file to read for an XML target description"), _("\ +Show the file to read for an XML target description"), _("\ +When set, GDB will read the target description from a local\n\ +file instead of querying the remote target."), + set_tdesc_filename_cmd, + show_tdesc_filename_cmd, + &tdesc_set_cmdlist, &tdesc_show_cmdlist); + + add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ +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); }