diff options
author | Alan Hayward <alan.hayward@arm.com> | 2018-01-23 09:47:14 +0000 |
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committer | Alan Hayward <alan.hayward@arm.com> | 2018-01-24 12:13:57 +0000 |
commit | fff179643e763318b3050b9777b887f3445c6a55 (patch) | |
tree | 149fb177950a0a7eea7c6a789108dddc63c98418 | |
parent | 75b9525ee2dd9be169f7213e59b07c8e0299c358 (diff) | |
download | binutils-gdb-fff179643e763318b3050b9777b887f3445c6a55.tar.gz |
[2/8] use reg_tdesc
-rw-r--r-- | gdb/Makefile.in | 1 | ||||
-rw-r--r-- | gdb/arch/tdesc.c | 40 | ||||
-rw-r--r-- | gdb/arch/tdesc.h | 99 | ||||
-rw-r--r-- | gdb/gdbserver/Makefile.in | 3 | ||||
-rw-r--r-- | gdb/gdbserver/tdesc.c | 39 | ||||
-rw-r--r-- | gdb/gdbserver/tdesc.h | 5 | ||||
-rw-r--r-- | gdb/target-descriptions.c | 102 |
7 files changed, 169 insertions, 120 deletions
diff --git a/gdb/Makefile.in b/gdb/Makefile.in index 0f87398fbd8..b834ce8033b 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -912,6 +912,7 @@ COMMON_SFILES = \ agent.c \ annotate.c \ arch-utils.c \ + arch/tdesc.c \ auto-load.c \ auxv.c \ ax-gdb.c \ diff --git a/gdb/arch/tdesc.c b/gdb/arch/tdesc.c new file mode 100644 index 00000000000..3d84ad8d3fa --- /dev/null +++ b/gdb/arch/tdesc.c @@ -0,0 +1,40 @@ +/* Target description support for GDB. + + Copyright (C) 2017 Free Software Foundation, Inc. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#ifdef GDBSERVER +#include "server.h" +#else +#include "defs.h" +#endif + +#include "tdesc.h" + +tdesc_reg::tdesc_reg (struct tdesc_feature *feature, const std::string &name_, + int regnum, int save_restore_, const char *group_, + int bitsize_, const char *type_) + : name (name_), target_regnum (regnum), + save_restore (save_restore_), + group (group_ != NULL ? group_ : ""), + bitsize (bitsize_), + type (type_ != NULL ? type_ : "<unknown>") +{ + /* If the register's type is target-defined, look it up now. We may not + have easy access to the containing feature when we want it later. */ + tdesc_type = tdesc_named_type (feature, type.c_str ()); +} diff --git a/gdb/arch/tdesc.h b/gdb/arch/tdesc.h index cc11651dcaa..e957822b348 100644 --- a/gdb/arch/tdesc.h +++ b/gdb/arch/tdesc.h @@ -18,6 +18,12 @@ #ifndef ARCH_TDESC_H #define ARCH_TDESC_H 1 +#ifdef GDBSERVER +#include "server.h" +#else +#include "defs.h" +#endif + struct tdesc_feature; struct tdesc_type; struct tdesc_type_builtin; @@ -26,6 +32,99 @@ struct tdesc_type_with_fields; struct tdesc_reg; struct target_desc; +/* The interface to visit different elements of target description. */ + +class tdesc_element_visitor +{ +public: + virtual void visit_pre (const target_desc *e) = 0; + virtual void visit_post (const target_desc *e) = 0; + + virtual void visit_pre (const tdesc_feature *e) = 0; + virtual void visit_post (const tdesc_feature *e) = 0; + + virtual void visit (const tdesc_type_builtin *e) = 0; + virtual void visit (const tdesc_type_vector *e) = 0; + virtual void visit (const tdesc_type_with_fields *e) = 0; + + virtual void visit (const tdesc_reg *e) = 0; +}; + +class tdesc_element +{ +public: + virtual void accept (tdesc_element_visitor &v) const = 0; +}; + +/* An individual register from a target description. */ + +struct tdesc_reg : tdesc_element +{ + tdesc_reg (struct tdesc_feature *feature, const std::string &name_, + int regnum, int save_restore_, const char *group_, + int bitsize_, const char *type_); + + virtual ~tdesc_reg () = default; + + DISABLE_COPY_AND_ASSIGN (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. */ + std::string 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 empty + 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 empty). */ + std::string 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. */ + std::string type; + + /* The target-described type corresponding to TYPE, if found. */ + struct tdesc_type *tdesc_type; + + void accept (tdesc_element_visitor &v) const override + { + v.visit (this); + } + + bool operator== (const tdesc_reg &other) const + { + return (name == other.name + && target_regnum == other.target_regnum + && save_restore == other.save_restore + && bitsize == other.bitsize + && group == other.group + && type == other.type); + } + + bool operator!= (const tdesc_reg &other) const + { + return !(*this == other); + } +}; + +typedef std::unique_ptr<tdesc_reg> tdesc_reg_up; + /* Allocate a new target_desc. */ target_desc *allocate_target_description (void); diff --git a/gdb/gdbserver/Makefile.in b/gdb/gdbserver/Makefile.in index 3ce086d70f2..8ae124875dd 100644 --- a/gdb/gdbserver/Makefile.in +++ b/gdb/gdbserver/Makefile.in @@ -194,6 +194,7 @@ SFILES = \ $(srcdir)/arch/arm.c \ $(srcdir)/arch/arm-get-next-pcs.c \ $(srcdir)/arch/arm-linux.c \ + $(srcdir)/../arch/tdesc.c \ $(srcdir)/common/btrace-common.c \ $(srcdir)/common/buffer.c \ $(srcdir)/common/cleanups.c \ @@ -232,6 +233,7 @@ TAGFILES = $(SOURCES) ${HFILES} ${ALLPARAM} ${POSSLIBS} OBS = \ agent.o \ + arch/tdesc.o \ ax.o \ btrace-common.o \ buffer.o \ @@ -391,6 +393,7 @@ gdbreplay$(EXEEXT): $(GDBREPLAY_OBS) $(LIBGNU) $(LIBIBERTY) $(XM_CLIBS) $(LIBGNU) $(LIBIBERTY) IPA_OBJS = \ + arch/tdesc-ipa.o \ ax-ipa.o \ common-utils-ipa.o \ errors-ipa.o \ diff --git a/gdb/gdbserver/tdesc.c b/gdb/gdbserver/tdesc.c index 359ab97361c..5dec636baa6 100644 --- a/gdb/gdbserver/tdesc.c +++ b/gdb/gdbserver/tdesc.c @@ -72,9 +72,27 @@ init_target_desc (struct target_desc *tdesc) { int offset = 0; - for (reg *reg : tdesc->reg_defs) + /* Go through all the features and populate reg_defs. */ + for (const tdesc_reg_up &treg : tdesc->registers) { + /* Fill in any blank spaces. */ + while (tdesc->reg_defs.size () < treg->target_regnum) + { + struct reg *reg = XCNEW (struct reg); + reg->name = ""; + reg->size = 0; + reg->offset = offset; + tdesc->reg_defs.push_back (reg); + } + + gdb_assert (treg->target_regnum == 0 + || treg->target_regnum == tdesc->reg_defs.size ()); + + struct reg *reg = XCNEW (struct reg); + reg->name = treg->name.c_str (); + reg->size = treg->bitsize; reg->offset = offset; + tdesc->reg_defs.push_back (reg); offset += reg->size; } @@ -241,23 +259,10 @@ tdesc_create_reg (struct tdesc_feature *feature, const char *name, { struct target_desc *tdesc = (struct target_desc *) feature; - while (tdesc->reg_defs.size () < regnum) - { - struct reg *reg = XCNEW (struct reg); - - reg->name = ""; - reg->size = 0; - tdesc->reg_defs.push_back (reg); - } - - gdb_assert (regnum == 0 - || regnum == tdesc->reg_defs.size ()); - - struct reg *reg = XCNEW (struct reg); + tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, + group, bitsize, type); - reg->name = name; - reg->size = bitsize; - tdesc->reg_defs.push_back (reg); + tdesc->registers.emplace_back (reg); } /* See arch/tdesc.h. */ diff --git a/gdb/gdbserver/tdesc.h b/gdb/gdbserver/tdesc.h index 705b968b98a..cfc1a194def 100644 --- a/gdb/gdbserver/tdesc.h +++ b/gdb/gdbserver/tdesc.h @@ -25,7 +25,10 @@ #include <vector> struct tdesc_feature -{}; +{ + /* The registers associated with this feature. */ + std::vector<tdesc_reg_up> registers; +}; /* A target description. Inherit from tdesc_feature so that target_desc can be used as tdesc_feature. */ diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c index 1b20a12d769..881ef78d2e3 100644 --- a/gdb/target-descriptions.c +++ b/gdb/target-descriptions.c @@ -38,30 +38,6 @@ #include "completer.h" #include "readline/tilde.h" /* tilde_expand */ -/* The interface to visit different elements of target description. */ - -class tdesc_element_visitor -{ -public: - virtual void visit_pre (const target_desc *e) = 0; - virtual void visit_post (const target_desc *e) = 0; - - virtual void visit_pre (const tdesc_feature *e) = 0; - virtual void visit_post (const tdesc_feature *e) = 0; - - virtual void visit (const tdesc_type_builtin *e) = 0; - virtual void visit (const tdesc_type_vector *e) = 0; - virtual void visit (const tdesc_type_with_fields *e) = 0; - - virtual void visit (const tdesc_reg *e) = 0; -}; - -class tdesc_element -{ -public: - virtual void accept (tdesc_element_visitor &v) const = 0; -}; - /* Types. */ struct property @@ -74,84 +50,6 @@ struct property std::string value; }; -/* An individual register from a target description. */ - -struct tdesc_reg : tdesc_element -{ - tdesc_reg (struct tdesc_feature *feature, const std::string &name_, - int regnum, int save_restore_, const char *group_, - int bitsize_, const char *type_) - : name (name_), target_regnum (regnum), - save_restore (save_restore_), - group (group_ != NULL ? group_ : ""), - bitsize (bitsize_), - type (type_ != NULL ? type_ : "<unknown>") - { - /* If the register's type is target-defined, look it up now. We may not - have easy access to the containing feature when we want it later. */ - tdesc_type = tdesc_named_type (feature, type.c_str ()); - } - - virtual ~tdesc_reg () = default; - - DISABLE_COPY_AND_ASSIGN (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. */ - std::string 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 empty - if the group should be automatically determined from the register's - type. This is traditionally "general", "float", "vector" but can - also be an arbitrary string. If defined the corresponding "info" - command should display this register's value. The string should be - limited to alphanumeric characters and internal hyphens. */ - std::string 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. */ - std::string type; - - /* The target-described type corresponding to TYPE, if found. */ - struct tdesc_type *tdesc_type; - - void accept (tdesc_element_visitor &v) const override - { - v.visit (this); - } - - bool operator== (const tdesc_reg &other) const - { - return (name == other.name - && target_regnum == other.target_regnum - && save_restore == other.save_restore - && bitsize == other.bitsize - && group == other.group - && type == other.type); - } - - bool operator!= (const tdesc_reg &other) const - { - return !(*this == other); - } -}; - -typedef std::unique_ptr<tdesc_reg> tdesc_reg_up; - /* A named type from a target description. */ struct tdesc_type_field |