1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980 |
- /* AMDGCN ELF support for BFD.
- Copyright (C) 2019-2022 Free Software Foundation, Inc.
- This file is part of BFD, the Binary File Descriptor library.
- This program 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 of the License, or
- (at your option) any later version.
- This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
- /* This file handles ELF files that are of the AMDGCN architecture. The
- format is documented here:
- https://llvm.org/docs/AMDGPUUsage.html#elf-code-object */
- #include "sysdep.h"
- #include "bfd.h"
- #include "libbfd.h"
- #include "elf-bfd.h"
- #include "elf/amdgpu.h"
- #include <string.h>
- static bool
- elf64_amdgcn_object_p (bfd *abfd)
- {
- Elf_Internal_Ehdr *hdr = elf_elfheader (abfd);
- unsigned int mach;
- unsigned char osabi;
- unsigned char osabi_version;
- BFD_ASSERT (hdr->e_machine == EM_AMDGPU);
- osabi = hdr->e_ident[EI_OSABI];
- osabi_version = hdr->e_ident[EI_ABIVERSION];
- /* Objects with OS ABI HSA version 2 encoded the GPU model differently (in a
- note), but they are deprecated, so we don't need to support them. Reject
- them specifically.
- At the time of writing, all AMDGCN objects encode the specific GPU
- model in the EF_AMDGPU_MACH field of e_flags. */
- if (osabi == ELFOSABI_AMDGPU_HSA
- && osabi_version < ELFABIVERSION_AMDGPU_HSA_V3)
- return false;
- mach = elf_elfheader (abfd)->e_flags & EF_AMDGPU_MACH;
- /* Avoid matching non-AMDGCN AMDGPU objects (e.g. r600). */
- if (mach < EF_AMDGPU_MACH_AMDGCN_MIN)
- return false;
- bfd_default_set_arch_mach (abfd, bfd_arch_amdgcn, mach);
- return true;
- }
- #define TARGET_LITTLE_SYM amdgcn_elf64_le_vec
- #define TARGET_LITTLE_NAME "elf64-amdgcn"
- #define ELF_ARCH bfd_arch_amdgcn
- #define ELF_TARGET_ID AMDGCN_ELF_DATA
- #define ELF_MACHINE_CODE EM_AMDGPU
- #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
- #define ELF_COMMONPAGESIZE 0x1000 /* 4KB */
- #define bfd_elf64_bfd_reloc_type_lookup bfd_default_reloc_type_lookup
- #define bfd_elf64_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
- #define elf_backend_object_p elf64_amdgcn_object_p
- #include "elf64-target.h"
|