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/* BPF-specific code for C family languages.
Copyright (C) 2024 Free Software Foundation, Inc.
Contributed by Oracle Inc.
This file is part of GCC.
GCC 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, or (at your option)
any later version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#define IN_TARGET_CODE 1
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "c-family/c-common.h"
#include "cpplib.h"
/* Define target-specific CPP macros. This function in used in the
definition of TARGET_CPU_CPP_BUILTINS in bpf.h */
#define builtin_define(TXT) cpp_define (pfile, TXT)
void
bpf_target_macros (cpp_reader *pfile)
{
builtin_define ("__BPF__");
builtin_define ("__bpf__");
if (TARGET_BIG_ENDIAN)
builtin_define ("__BPF_BIG_ENDIAN__");
else
builtin_define ("__BPF_LITTLE_ENDIAN__");
switch (bpf_isa)
{
case ISA_V1:
builtin_define_with_int_value ("__BPF_CPU_VERSION__", 1);
break;
case ISA_V2:
builtin_define_with_int_value ("__BPF_CPU_VERSION__", 2);
break;
case ISA_V3:
builtin_define_with_int_value ("__BPF_CPU_VERSION__", 3);
break;
case ISA_V4:
builtin_define_with_int_value ("__BPF_CPU_VERSION__", 4);
break;
default:
gcc_unreachable ();
break;
}
/* Different BPF CPU versions support different features. Some of
them can be enabled/disabled explicitly. */
if (bpf_has_alu32)
builtin_define ("__BPF_FEATURE_ALU32");
if (bpf_has_jmp32)
builtin_define ("__BPF_FEATURE_JMP32");
if (bpf_has_jmpext)
builtin_define ("__BPF_FEATURE_JMP_EXT");
if (bpf_has_bswap)
builtin_define ("__BPF_FEATURE_BSWAP");
if (bpf_has_sdiv)
builtin_define ("__BPF_FEATURE_SDIV_SMOD");
if (bpf_has_smov)
builtin_define ("__BPF_FEATURE_MOVSX");
/* Other CPU features can only be enabled/disabled generically by
selecting the corresponding CPU version. */
if (bpf_isa >= ISA_V4)
{
builtin_define ("__BPF_FEATURE_LDSX");
builtin_define ("__BPF_FEATURE_GOTOL");
builtin_define ("__BPF_FEATURE_ST");
}
}
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