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ansi_c_internal_additions.cpp
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/*******************************************************************\
Module:
Author: Daniel Kroening, [email protected]
\*******************************************************************/
#include "ansi_c_internal_additions.h"
#include <util/c_types.h>
#include <util/config.h>
#include <goto-programs/adjust_float_expressions.h>
#include <linking/static_lifetime_init.h>
#include "ansi_c_parser.h"
const char gcc_builtin_headers_types[] =
"#line 1 \"gcc_builtin_headers_types.h\"\n"
#include "compiler_headers/gcc_builtin_headers_types.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_generic[] =
"#line 1 \"gcc_builtin_headers_generic.h\"\n"
#include "compiler_headers/gcc_builtin_headers_generic.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_math[] =
"#line 1 \"gcc_builtin_headers_math.h\"\n"
#include "compiler_headers/gcc_builtin_headers_math.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_mem_string[] =
"#line 1 \"gcc_builtin_headers_mem_string.h\"\n"
// NOLINTNEXTLINE(whitespace/line_length)
#include "compiler_headers/gcc_builtin_headers_mem_string.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_omp[] = "#line 1 \"gcc_builtin_headers_omp.h\"\n"
#include "compiler_headers/gcc_builtin_headers_omp.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_tm[] = "#line 1 \"gcc_builtin_headers_tm.h\"\n"
#include "compiler_headers/gcc_builtin_headers_tm.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ubsan[] =
"#line 1 \"gcc_builtin_headers_ubsan.h\"\n"
#include "compiler_headers/gcc_builtin_headers_ubsan.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ia32[] =
"#line 1 \"gcc_builtin_headers_ia32.h\"\n"
#include "compiler_headers/gcc_builtin_headers_ia32.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ia32_2[] =
#include "compiler_headers/gcc_builtin_headers_ia32-2.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ia32_3[] =
#include "compiler_headers/gcc_builtin_headers_ia32-3.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ia32_4[] =
#include "compiler_headers/gcc_builtin_headers_ia32-4.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ia32_5[] =
#include "compiler_headers/gcc_builtin_headers_ia32-5.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ia32_6[] =
#include "compiler_headers/gcc_builtin_headers_ia32-6.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ia32_7[] =
#include "compiler_headers/gcc_builtin_headers_ia32-7.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ia32_8[] =
#include "compiler_headers/gcc_builtin_headers_ia32-8.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_ia32_9[] =
#include "compiler_headers/gcc_builtin_headers_ia32-9.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_alpha[] =
"#line 1 \"gcc_builtin_headers_alpha.h\"\n"
#include "compiler_headers/gcc_builtin_headers_alpha.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_arm[] = "#line 1 \"gcc_builtin_headers_arm.h\"\n"
#include "compiler_headers/gcc_builtin_headers_arm.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_mips[] =
"#line 1 \"gcc_builtin_headers_mips.h\"\n"
#include "compiler_headers/gcc_builtin_headers_mips.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char gcc_builtin_headers_power[] =
"#line 1 \"gcc_builtin_headers_power.h\"\n"
#include "compiler_headers/gcc_builtin_headers_power.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char arm_builtin_headers[] = "#line 1 \"arm_builtin_headers.h\"\n"
#include "compiler_headers/arm_builtin_headers.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char cw_builtin_headers[] = "#line 1 \"cw_builtin_headers.h\"\n"
#include "compiler_headers/cw_builtin_headers.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char clang_builtin_headers[] = "#line 1 \"clang_builtin_headers.h\"\n"
#include "compiler_headers/clang_builtin_headers.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char cprover_builtin_headers[] = "#line 1 \"cprover_builtin_headers.h\"\n"
#include "cprover_builtin_headers.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
const char windows_builtin_headers[] = "#line 1 \"windows_builtin_headers.h\"\n"
#include "compiler_headers/windows_builtin_headers.inc" // IWYU pragma: keep
; // NOLINT(whitespace/semicolon)
static std::string architecture_string(const std::string &value, const char *s)
{
return std::string("const char *" CPROVER_PREFIX "architecture_") +
std::string(s) + "=\"" + value + "\";\n";
}
template <typename T>
static std::string architecture_string(T value, const char *s)
{
std::ostringstream os;
os << "const " << CPROVER_PREFIX "integer " << CPROVER_PREFIX "architecture_"
<< s << '=' << value << ";\n";
return os.str();
}
void ansi_c_internal_additions(std::string &code, bool support_float16_type)
{
// clang-format off
// do the built-in types and variables
code+=
"#line 1 \"<built-in-additions>\"\n"
"typedef __typeof__(sizeof(int)) " CPROVER_PREFIX "size_t;\n"
"typedef "+c_type_as_string(signed_size_type().get(ID_C_c_type))+
" " CPROVER_PREFIX "ssize_t;\n"
"const unsigned " CPROVER_PREFIX "constant_infinity_uint;\n"
"typedef void " CPROVER_PREFIX "integer;\n"
"typedef void " CPROVER_PREFIX "rational;\n"
"extern unsigned char " CPROVER_PREFIX "memory["
CPROVER_PREFIX "constant_infinity_uint];\n"
// malloc
"const void *" CPROVER_PREFIX "deallocated=0;\n"
"const void *" CPROVER_PREFIX "dead_object=0;\n"
"const void *" CPROVER_PREFIX "memory_leak=0;\n"
"void *" CPROVER_PREFIX "allocate("
CPROVER_PREFIX "size_t size, " CPROVER_PREFIX "bool zero);\n"
"void " CPROVER_PREFIX "deallocate(void *);\n"
CPROVER_PREFIX "thread_local " CPROVER_PREFIX "size_t "
CPROVER_PREFIX "max_malloc_size="+
integer2string(config.max_malloc_size());
if(config.ansi_c.pointer_width==config.ansi_c.long_int_width)
code += "UL;\n";
else if(config.ansi_c.pointer_width==config.ansi_c.long_long_int_width)
code += "ULL;\n";
else
code += "U;\n";
code+=
// this is ANSI-C
"extern " CPROVER_PREFIX "thread_local const char __func__["
CPROVER_PREFIX "constant_infinity_uint];\n"
// this is GCC
"extern " CPROVER_PREFIX "thread_local const char __FUNCTION__["
CPROVER_PREFIX "constant_infinity_uint];\n"
"extern " CPROVER_PREFIX "thread_local const char __PRETTY_FUNCTION__["
CPROVER_PREFIX "constant_infinity_uint];\n"
// float stuff
"int " CPROVER_PREFIX "thread_local " +
id2string(rounding_mode_identifier()) + '='+
std::to_string(config.ansi_c.rounding_mode)+";\n"
// pipes, write, read, close
"struct " CPROVER_PREFIX "pipet {\n"
" _Bool widowed;\n"
" char data[4];\n"
" short next_avail;\n"
" short next_unread;\n"
"};\n"
"\n"
// This function needs to be declared, or otherwise can't be called
// by the entry-point construction.
"void " INITIALIZE_FUNCTION "(void);\n"
"\n"
// frame specifications for contracts
// Declares a range of bytes as assignable (internal representation)
"void " CPROVER_PREFIX "assignable(void *ptr,\n"
" " CPROVER_PREFIX "size_t size,\n"
" " CPROVER_PREFIX "bool is_ptr_to_ptr);\n"
// Declares a range of bytes as assignable
"void " CPROVER_PREFIX "object_upto(void *ptr, \n"
" " CPROVER_PREFIX "size_t size);\n"
// Declares bytes from ptr to the end of the object as assignable
"void " CPROVER_PREFIX "object_from(void *ptr);\n"
// Declares the whole object pointed to by ptr as assignable
"void " CPROVER_PREFIX "object_whole(void *ptr);\n"
// Declares a pointer as freeable
"void " CPROVER_PREFIX "freeable(void *ptr);\n"
// True iff ptr satisfies the preconditions of the free stdlib function
CPROVER_PREFIX "bool " CPROVER_PREFIX "is_freeable(void *ptr);\n"
// True iff ptr was freed during function execution or loop execution
CPROVER_PREFIX "bool " CPROVER_PREFIX "was_freed(void *ptr);\n"
"\n";
// clang-format on
// GCC junk stuff, also for CLANG and ARM
if(
config.ansi_c.mode == configt::ansi_ct::flavourt::GCC ||
config.ansi_c.mode == configt::ansi_ct::flavourt::CLANG ||
config.ansi_c.mode == configt::ansi_ct::flavourt::ARM)
{
code+=gcc_builtin_headers_types;
if(support_float16_type)
{
code +=
"typedef _Float16 __gcc_v8hf __attribute__((__vector_size__(16)));\n";
code +=
"typedef _Float16 __gcc_v16hf __attribute__((__vector_size__(32)));\n";
code +=
"typedef _Float16 __gcc_v32hf __attribute__((__vector_size__(64)));\n";
}
// there are many more, e.g., look at
// https://developer.apple.com/library/mac/#documentation/developertools/gcc-4.0.1/gcc/Target-Builtins.html
if(
config.ansi_c.arch == "i386" || config.ansi_c.arch == "x86_64" ||
config.ansi_c.arch == "x32" || config.ansi_c.arch == "ia64" ||
config.ansi_c.arch == "powerpc" || config.ansi_c.arch == "ppc64")
{
// https://gcc.gnu.org/onlinedocs/gcc/Floating-Types.html
// For clang, __float128 is a keyword.
// For gcc, this is a typedef and not a keyword.
if(
config.ansi_c.mode != configt::ansi_ct::flavourt::CLANG &&
config.ansi_c.gcc__float128_type)
{
code += "typedef " CPROVER_PREFIX "Float128 __float128;\n";
}
}
else if(config.ansi_c.arch == "ppc64le")
{
// https://patchwork.ozlabs.org/patch/792295/
if(config.ansi_c.mode != configt::ansi_ct::flavourt::CLANG)
code += "typedef " CPROVER_PREFIX "Float128 __ieee128;\n";
}
else if(config.ansi_c.arch == "hppa")
{
// https://gcc.gnu.org/onlinedocs/gcc/Floating-Types.html
// For clang, __float128 is a keyword.
// For gcc, this is a typedef and not a keyword.
if(
config.ansi_c.mode != configt::ansi_ct::flavourt::CLANG &&
config.ansi_c.gcc__float128_type)
{
code+="typedef long double __float128;\n";
}
}
if(
config.ansi_c.arch == "i386" || config.ansi_c.arch == "x86_64" ||
config.ansi_c.arch == "x32" || config.ansi_c.arch == "ia64")
{
// clang doesn't do __float80
// Note that __float80 is a typedef, and not a keyword.
if(config.ansi_c.mode != configt::ansi_ct::flavourt::CLANG)
code += "typedef " CPROVER_PREFIX "Float64x __float80;\n";
}
// On 64-bit systems, gcc has typedefs
// __int128_t und __uint128_t -- but not on 32 bit!
if(config.ansi_c.long_int_width>=64)
{
code+="typedef signed __int128 __int128_t;\n"
"typedef unsigned __int128 __uint128_t;\n";
}
}
// this is Visual C/C++ only
if(config.ansi_c.os==configt::ansi_ct::ost::OS_WIN)
code += "int __assume(int);\n";
// ARM stuff
if(config.ansi_c.mode==configt::ansi_ct::flavourt::ARM)
code+=arm_builtin_headers;
// CW stuff
if(config.ansi_c.mode==configt::ansi_ct::flavourt::CODEWARRIOR)
code+=cw_builtin_headers;
// Architecture strings
ansi_c_architecture_strings(code);
}
void ansi_c_architecture_strings(std::string &code)
{
// The following are CPROVER-specific.
// They allow identifying the architectural settings used
// at compile time from a goto-binary.
code += "#line 1 \"<builtin-architecture-strings>\"\n";
code+=architecture_string(config.ansi_c.int_width, "int_width");
code+=architecture_string(config.ansi_c.int_width, "word_size"); // old
code+=architecture_string(config.ansi_c.long_int_width, "long_int_width");
code+=architecture_string(config.ansi_c.bool_width, "bool_width");
code+=architecture_string(config.ansi_c.char_width, "char_width");
code+=architecture_string(config.ansi_c.short_int_width, "short_int_width");
code+=architecture_string(config.ansi_c.long_long_int_width, "long_long_int_width"); // NOLINT(whitespace/line_length)
code+=architecture_string(config.ansi_c.pointer_width, "pointer_width");
code+=architecture_string(config.ansi_c.single_width, "single_width");
code+=architecture_string(config.ansi_c.double_width, "double_width");
code+=architecture_string(config.ansi_c.long_double_width, "long_double_width"); // NOLINT(whitespace/line_length)
code+=architecture_string(config.ansi_c.wchar_t_width, "wchar_t_width");
code+=architecture_string(config.ansi_c.char_is_unsigned, "char_is_unsigned");
code+=architecture_string(config.ansi_c.wchar_t_is_unsigned, "wchar_t_is_unsigned"); // NOLINT(whitespace/line_length)
code+=architecture_string(config.ansi_c.alignment, "alignment");
code+=architecture_string(config.ansi_c.memory_operand_size, "memory_operand_size"); // NOLINT(whitespace/line_length)
code+=architecture_string(static_cast<int>(config.ansi_c.endianness), "endianness"); // NOLINT(whitespace/line_length)
code+=architecture_string(id2string(config.ansi_c.arch), "arch");
code+=architecture_string(configt::ansi_ct::os_to_string(config.ansi_c.os), "os"); // NOLINT(whitespace/line_length)
code+=architecture_string(config.ansi_c.NULL_is_zero, "NULL_is_zero");
}