diff options
Diffstat (limited to 'gdb/dwarf2/cu.h')
| -rw-r--r-- | gdb/dwarf2/cu.h | 214 |
1 files changed, 189 insertions, 25 deletions
diff --git a/gdb/dwarf2/cu.h b/gdb/dwarf2/cu.h index 737d3ba..69f396c 100644 --- a/gdb/dwarf2/cu.h +++ b/gdb/dwarf2/cu.h @@ -1,6 +1,6 @@ /* DWARF CU data structure - Copyright (C) 2021-2024 Free Software Foundation, Inc. + Copyright (C) 2021-2025 Free Software Foundation, Inc. This file is part of GDB. @@ -21,7 +21,7 @@ #define GDB_DWARF2_CU_H #include "buildsym.h" -#include "dwarf2/comp-unit-head.h" +#include "dwarf2/unit-head.h" #include <optional> #include "language.h" #include "gdbsupport/unordered_set.h" @@ -50,8 +50,7 @@ struct delayed_method_info /* Internal state when decoding a particular compilation unit. */ struct dwarf2_cu { - explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, - dwarf2_per_objfile *per_objfile); + explicit dwarf2_cu (dwarf2_per_cu *per_cu, dwarf2_per_objfile *per_objfile); DISABLE_COPY_AND_ASSIGN (dwarf2_cu); @@ -97,11 +96,20 @@ struct dwarf2_cu } /* Add a dependence relationship from this cu to REF_PER_CU. */ - void add_dependence (struct dwarf2_per_cu_data *ref_per_cu) + void add_dependence (dwarf2_per_cu *ref_per_cu) { m_dependencies.emplace (ref_per_cu); } + /* Find the DIE at section offset SECT_OFF. + + Return nullptr if not found. */ + die_info *find_die (sect_offset sect_off) const + { + auto it = die_hash.find (sect_off); + return it != die_hash.end () ? *it : nullptr; + } + /* The header of the compilation unit. */ - struct comp_unit_head header; + struct unit_head header; /* Base address of this compilation unit. */ std::optional<unrelocated_addr> base_address; @@ -115,17 +123,163 @@ struct dwarf2_cu return language_defn->la_language; } - const char *producer = nullptr; + /* Set the producer string and check various properties of it. */ + void set_producer (const char *producer); + + /* Check for GCC PR debug/45124 fix which is not present in any G++ + version up to 4.5.any while it is present already in G++ 4.6.0 - + the PR has been fixed during 4.6.0 experimental. */ + bool producer_is_gxx_lt_4_6 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gxx_lt_4_6; + } + + /* Check for GCC < 4.5.x. */ + bool producer_is_gcc_lt_4_5 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gcc_lt_4_5; + } + + /* Codewarrior (at least as of version 5.0.40) generates dwarf line + information with incorrect is_stmt attributes. */ + bool producer_is_codewarrior () const + { + gdb_assert (m_checked_producer); + return m_producer_is_codewarrior; + } + + bool producer_is_gas_lt_2_38 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gas_lt_2_38; + } + + bool producer_is_gas_2_39 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gas_2_39; + } + + /* Return true if CU is produced by GAS 2.39 or later. */ + bool producer_is_gas_ge_2_39 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gas_2_39 || m_producer_is_gas_ge_2_40; + } + + /* ICC<14 does not output the required DW_AT_declaration on + incomplete types, but gives them a size of zero. Starting with + version 14, ICC is compatible with GCC. */ + bool producer_is_icc_lt_14 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_icc_lt_14; + } + + /* ICC generates a DW_AT_type for C void functions. This was + observed on ICC 14.0.5.212, and appears to be against the DWARF + spec (V5 3.3.2) which says that void functions should not have a + DW_AT_type. */ + bool producer_is_icc () const + { + gdb_assert (m_checked_producer); + return m_producer_is_icc; + } + + /* Check for possibly missing DW_AT_comp_dir with relative + .debug_line directory paths. GCC SVN r127613 (new option + -fdebug-prefix-map) fixed this, it was first present in GCC + release 4.3.0. */ + bool producer_is_gcc_lt_4_3 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gcc_lt_4_3; + } + + /* Check for GCC 4 or later. */ + bool producer_is_gcc_ge_4 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gcc_ge_4; + } + + /* Check for GCC 11 exactly. */ + bool producer_is_gcc_11 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gcc_11; + } + + /* Check for any version of GCC. */ + bool producer_is_gcc () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gcc; + } + + /* Return true if the producer of the inferior is clang. */ + bool producer_is_clang () const + { + gdb_assert (m_checked_producer); + return m_producer_is_clang; + } + + /* Return true if the producer is RealView. */ + bool producer_is_realview () const + { + gdb_assert (m_checked_producer); + return m_producer_is_realview; + } + + /* Return true if the producer is IBM XLC. */ + bool producer_is_xlc () const + { + gdb_assert (m_checked_producer); + return m_producer_is_xlc; + } + + /* Return true if the producer is IBM XLC for OpenCL. */ + bool producer_is_xlc_opencl () const + { + gdb_assert (m_checked_producer); + return m_producer_is_xlc_opencl; + } + + /* Return true if the producer is GNU F77. */ + bool producer_is_gf77 () const + { + gdb_assert (m_checked_producer); + return m_producer_is_gf77; + } + + /* Return true if the producer is GNU Go. */ + bool producer_is_ggo () const + { + gdb_assert (m_checked_producer); + return m_producer_is_ggo; + } + + /* Return the producer. In general this should not be used and + instead new checks should be added to set_producer. */ + const char *get_producer () const + { + gdb_assert (m_checked_producer); + return m_producer; + } private: + const char *m_producer = nullptr; + /* The symtab builder for this CU. This is only non-NULL when full symbols are being read. */ - std::unique_ptr<buildsym_compunit> m_builder; + buildsym_compunit_up m_builder; - /* A set of pointers to dwarf2_per_cu_data objects for compilation - units referenced by this one. Only used during full symbol processing; - partial symbol tables do not have dependencies. */ - gdb::unordered_set<dwarf2_per_cu_data *> m_dependencies; + /* A set of pointers to dwarf2_per_cu objects for compilation units referenced + by this one. Only used during full symbol processing; partial symbol + tables do not have dependencies. */ + gdb::unordered_set<dwarf2_per_cu *> m_dependencies; public: /* The generic symbol table building routines have separate lists for @@ -144,7 +298,7 @@ public: auto_obstack comp_unit_obstack; /* Backlink to our per_cu entry. */ - struct dwarf2_per_cu_data *per_cu; + dwarf2_per_cu *per_cu; /* The dwarf2_per_objfile that owns this. */ dwarf2_per_objfile *per_objfile; @@ -215,7 +369,7 @@ public: right place. And since the DW_TAG_compile_unit DIE in the split-unit can't have a DW_AT_ranges attribute, we can use the - die->tag != DW_AT_compile_unit + die->tag != DW_TAG_compile_unit to determine whether the base should be added or not. */ ULONGEST gnu_ranges_base = 0; @@ -258,17 +412,25 @@ public: if all the producer_is_* fields are valid. This information is cached because profiling CU expansion showed excessive time spent in producer_is_gxx_lt_4_6. */ - bool checked_producer : 1; - bool producer_is_gxx_lt_4_6 : 1; - bool producer_is_gcc_lt_4_3 : 1; - bool producer_is_gcc_11 : 1; - bool producer_is_icc : 1; - bool producer_is_icc_lt_14 : 1; - bool producer_is_codewarrior : 1; - bool producer_is_clang : 1; - bool producer_is_gas_lt_2_38 : 1; - bool producer_is_gas_2_39 : 1; - bool producer_is_gas_ge_2_40 : 1; + bool m_checked_producer : 1; + bool m_producer_is_gxx_lt_4_6 : 1; + bool m_producer_is_gcc_lt_4_5 : 1; + bool m_producer_is_gcc_lt_4_3 : 1; + bool m_producer_is_gcc_ge_4 : 1; + bool m_producer_is_gcc_11 : 1; + bool m_producer_is_gcc : 1; + bool m_producer_is_icc : 1; + bool m_producer_is_icc_lt_14 : 1; + bool m_producer_is_codewarrior : 1; + bool m_producer_is_clang : 1; + bool m_producer_is_gas_lt_2_38 : 1; + bool m_producer_is_gas_2_39 : 1; + bool m_producer_is_gas_ge_2_40 : 1; + bool m_producer_is_realview : 1; + bool m_producer_is_xlc : 1; + bool m_producer_is_xlc_opencl : 1; + bool m_producer_is_gf77 : 1; + bool m_producer_is_ggo : 1; /* When true, the file that we're processing is known to have debugging info for C++ namespaces. GCC 3.3.x did not produce @@ -280,4 +442,6 @@ public: buildsym_compunit *get_builder (); }; +using dwarf2_cu_up = std::unique_ptr<dwarf2_cu>; + #endif /* GDB_DWARF2_CU_H */ |