| ; Options for the eBPF compiler port. |
| |
| ; Copyright (C) 2019-2025 Free Software Foundation, 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/>. |
| |
| HeaderInclude |
| config/bpf/bpf-opts.h |
| |
| ; Use xBPF extensions. |
| |
| mxbpf |
| Target Mask(XBPF) |
| Generate xBPF. |
| |
| ; Selecting big endian or little endian targets. |
| |
| mbig-endian |
| Target RejectNegative Mask(BIG_ENDIAN) |
| Generate big-endian eBPF. |
| |
| mlittle-endian |
| Target RejectNegative InverseMask(BIG_ENDIAN) |
| Generate little-endian eBPF. |
| |
| mframe-limit= |
| Target Joined RejectNegative UInteger IntegerRange(0, 32767) Var(bpf_frame_limit) Init(32767) |
| Set a hard limit for the size of each stack frame, in bytes. |
| |
| mco-re |
| Target Mask(BPF_CORE) |
| Generate all necessary information for BPF Compile Once - Run Everywhere. |
| |
| ; Selecting BPF ISA features and versions |
| |
| mjmpext |
| Target Var(bpf_has_jmpext) Init(-1) |
| Enable extra conditional-branch instructions j(s)lt and j(s)le. |
| |
| malu32 |
| Target Var(bpf_has_alu32) Init(-1) |
| Enable 32-bit ALU instructions. |
| |
| mjmp32 |
| Target Var(bpf_has_jmp32) Init(-1) |
| Enable 32-bit jump instructions. |
| |
| mv3-atomics |
| Target Var(bpf_has_v3_atomics) Init(-1) |
| Enable general atomic operations introduced in v3 ISA. |
| |
| mbswap |
| Target Var(bpf_has_bswap) Init(-1) |
| Enable byte swap instructions. |
| |
| msdiv |
| Target Var(bpf_has_sdiv) Init(-1) |
| Enable signed division and modulus instructions. |
| |
| msmov |
| Target Var(bpf_has_smov) Init(-1) |
| Enable signed move and memory load instructions. |
| |
| mcpu= |
| Target RejectNegative Joined Var(bpf_isa) Enum(bpf_isa) Init(ISA_V4) |
| Select the eBPF ISA version to target in code generation. |
| |
| Enum |
| Name(bpf_isa) Type(enum bpf_isa_version) |
| Valid ISA versions (for use with the -mcpu= option) |
| |
| EnumValue |
| Enum(bpf_isa) String(v1) Value(ISA_V1) |
| |
| EnumValue |
| Enum(bpf_isa) String(v2) Value(ISA_V2) |
| |
| EnumValue |
| Enum(bpf_isa) String(v3) Value(ISA_V3) |
| |
| EnumValue |
| Enum(bpf_isa) String(v4) Value(ISA_V4) |
| |
| masm= |
| Target RejectNegative Joined Var(asm_dialect) Enum(asm_dialect) Init(ASM_PSEUDOC) |
| Use given assembler dialect. |
| |
| Enum |
| Name(asm_dialect) Type(enum bpf_asm_dialect) |
| Known assembler dialects (for use with the -masm= option) |
| |
| EnumValue |
| Enum(asm_dialect) String(normal) Value(ASM_NORMAL) |
| |
| EnumValue |
| Enum(asm_dialect) String(pseudoc) Value(ASM_PSEUDOC) |
| |
| minline-memops-threshold= |
| Target RejectNegative Joined UInteger Var(bpf_inline_memops_threshold) Init(1024) |
| -minline-memops-threshold=<number> Maximum size of memset/memmove/memcpy to inline, larger sizes will use a library call. |
