diff options
Diffstat (limited to 'gdb/compile/compile-c-support.c')
| -rw-r--r-- | gdb/compile/compile-c-support.c | 144 |
1 files changed, 142 insertions, 2 deletions
diff --git a/gdb/compile/compile-c-support.c b/gdb/compile/compile-c-support.c index ead2bddf210..02421f054d5 100644 --- a/gdb/compile/compile-c-support.c +++ b/gdb/compile/compile-c-support.c @@ -1,4 +1,4 @@ -/* C language support for compilation. +/* C/C++ language support for compilation. Copyright (C) 2014-2017 Free Software Foundation, Inc. @@ -20,6 +20,7 @@ #include "defs.h" #include "compile-internal.h" #include "compile-c.h" +#include "compile-cplus.h" #include "compile.h" #include "gdb-dlfcn.h" #include "c-lang.h" @@ -130,6 +131,20 @@ c_get_compile_context (void) GCC_FE_VERSION_0, GCC_C_FE_VERSION_0); } +/* A C++-language implementation of get_compile_context. */ + +compile::compile_instance * +cplus_get_compile_context (void) +{ + using namespace compile; + + return get_compile_context + <compile_cplus_instance, gcc_cp_fe_context_function, gcc_cp_context, + gcc_base_api_version, gcc_cp_api_version> + (STRINGIFY (GCC_CP_FE_LIBCC), STRINGIFY (GCC_CP_FE_CONTEXT), + GCC_FE_VERSION_0, GCC_CP_FE_VERSION_0); +} + /* Write one macro definition. */ @@ -392,6 +407,108 @@ struct c_add_input } }; +/* C++-language policy to emit a push user expression pragma into + BUF. */ + +struct cplus_push_user_expression +{ + void push_user_expression (struct ui_file *buf) + { + fputs_unfiltered ("#pragma GCC push_user_expression\n", buf); + } +}; + +/* C++-language policy to emit a pop user expression pragma into BUF. */ + +struct cplus_pop_user_expression +{ + void pop_user_expression (struct ui_file *buf) + { + fputs_unfiltered ("#pragma GCC pop_user_expression\n", buf); + } +}; + +/* C++-language policy to construct a code header for a block of code. + Takes a scope TYPE argument which selects the correct header to + insert into BUF. */ + +struct cplus_add_code_header +{ + void add_code_header (enum compile_i_scope_types type, struct ui_file *buf) + { + switch (type) + { + case COMPILE_I_SIMPLE_SCOPE: + fputs_unfiltered ("void " + GCC_FE_WRAPPER_FUNCTION + " (struct " + COMPILE_I_SIMPLE_REGISTER_STRUCT_TAG + " *" + COMPILE_I_SIMPLE_REGISTER_ARG_NAME + ") {\n", + buf); + break; + + case COMPILE_I_PRINT_ADDRESS_SCOPE: + case COMPILE_I_PRINT_VALUE_SCOPE: + fputs_unfiltered ( + "#include <cstring>\n" + "#include <bits/move.h>\n" + "void " + GCC_FE_WRAPPER_FUNCTION + " (struct " + COMPILE_I_SIMPLE_REGISTER_STRUCT_TAG + " *" + COMPILE_I_SIMPLE_REGISTER_ARG_NAME + ", " + COMPILE_I_PRINT_OUT_ARG_TYPE + " " + COMPILE_I_PRINT_OUT_ARG + ") {\n", + buf); + break; + + case COMPILE_I_RAW_SCOPE: + break; + + default: + gdb_assert_not_reached (_("Unknown compiler scope reached.")); + } + } +}; + +/* C++-language policy to emit the user code snippet INPUT into BUF based on + the scope TYPE. */ + +struct cplus_add_input +{ + void add_input (enum compile_i_scope_types type, const char *input, + struct ui_file *buf) + { + switch (type) + { + case COMPILE_I_PRINT_ADDRESS_SCOPE: + case COMPILE_I_PRINT_VALUE_SCOPE: + fprintf_unfiltered + (buf, + "auto " COMPILE_I_EXPR_VAL " = %s;\n" + "decltype ( %s ) *" COMPILE_I_EXPR_PTR_TYPE ";\n" + "std::memcpy (" COMPILE_I_PRINT_OUT_ARG ", %s (" + COMPILE_I_EXPR_VAL "),\n" + "sizeof (decltype(%s)));\n" + ,input, input, + (type == COMPILE_I_PRINT_ADDRESS_SCOPE + ? "std::__addressof" : ""), input); + break; + + default: + fputs_unfiltered (input, buf); + break; + } + fputs_unfiltered ("\n", buf); + } +}; + /* A host class representing a compile program. CompileInstanceType is the type of the compile_instance for the @@ -531,13 +648,18 @@ private: struct gdbarch *m_arch; }; -/* Type used for C program computations. */ +/* The types used for C and C++ program computations. */ typedef compile_program<compile::compile_c_instance, c_push_user_expression, pop_user_expression_nop, c_add_code_header, c_add_code_footer, c_add_input> c_compile_program; +typedef compile_program<compile::compile_cplus_instance, + cplus_push_user_expression, cplus_pop_user_expression, + cplus_add_code_header, c_add_code_footer, + cplus_add_input> cplus_compile_program; + /* The la_compute_program method for C. */ std::string @@ -554,3 +676,21 @@ c_compute_program (compile::compile_instance *inst, return program.compute (input, expr_block, expr_pc); } + +/* The la_compute_program method for C++. */ + +std::string +cplus_compute_program (compile::compile_instance *inst, + const char *input, + struct gdbarch *gdbarch, + const struct block *expr_block, + CORE_ADDR expr_pc) +{ + using namespace compile; + + compile_cplus_instance *cplus_inst + = static_cast<compile_cplus_instance *> (inst); + cplus_compile_program program (cplus_inst, gdbarch); + + return program.compute (input, expr_block, expr_pc); +} |