mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-14 04:43:38 +08:00
e3839c100f
bfd/
* elfnn-riscv.c (riscv_version_mismatch): Do not report the warning
when the version of input or output is RISCV_UNKNOWN_VERSION, since
the extension is added implicitly.
* elfxx-riscv.c: Updated the obsolete comments.
(RISCV_UNKNOWN_VERSION): Moved to elfxx-riscv.h.
* elfxx-riscv.h (RISCV_UNKNOWN_VERSION): Added.
1943 lines
54 KiB
C
1943 lines
54 KiB
C
/* RISC-V-specific support for ELF.
|
|
Copyright (C) 2011-2021 Free Software Foundation, Inc.
|
|
|
|
Contributed by Andrew Waterman (andrew@sifive.com).
|
|
Based on TILE-Gx and MIPS targets.
|
|
|
|
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; see the file COPYING3. If not,
|
|
see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "sysdep.h"
|
|
#include "bfd.h"
|
|
#include "libbfd.h"
|
|
#include "elf-bfd.h"
|
|
#include "elf/riscv.h"
|
|
#include "opcode/riscv.h"
|
|
#include "libiberty.h"
|
|
#include "elfxx-riscv.h"
|
|
#include "safe-ctype.h"
|
|
#include "cpu-riscv.h"
|
|
|
|
#define MINUS_ONE ((bfd_vma)0 - 1)
|
|
|
|
/* Special handler for ADD/SUB relocations that allows them to be filled out
|
|
both in the pre-linked and post-linked file. This is necessary to make
|
|
pre-linked debug info work, as due to linker relaxations we need to emit
|
|
relocations for the debug info. */
|
|
static bfd_reloc_status_type riscv_elf_add_sub_reloc
|
|
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
|
|
|
/* The relocation table used for SHT_RELA sections. */
|
|
|
|
static reloc_howto_type howto_table[] =
|
|
{
|
|
/* No relocation. */
|
|
HOWTO (R_RISCV_NONE, /* type */
|
|
0, /* rightshift */
|
|
3, /* size */
|
|
0, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_NONE", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 32 bit relocation. */
|
|
HOWTO (R_RISCV_32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_32", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 64 bit relocation. */
|
|
HOWTO (R_RISCV_64, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
64, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_64", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
MINUS_ONE, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* Relocation against a local symbol in a shared object. */
|
|
HOWTO (R_RISCV_RELATIVE, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_RELATIVE", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_RISCV_COPY, /* type */
|
|
0, /* rightshift */
|
|
0, /* this one is variable size */
|
|
0, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_COPY", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_RISCV_JUMP_SLOT, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
64, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_JUMP_SLOT", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* Dynamic TLS relocations. */
|
|
HOWTO (R_RISCV_TLS_DTPMOD32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TLS_DTPMOD32", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_RISCV_TLS_DTPMOD64, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
64, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TLS_DTPMOD64", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
MINUS_ONE, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_RISCV_TLS_DTPREL32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TLS_DTPREL32", /* name */
|
|
true, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_RISCV_TLS_DTPREL64, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
64, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TLS_DTPREL64", /* name */
|
|
true, /* partial_inplace */
|
|
0, /* src_mask */
|
|
MINUS_ONE, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_RISCV_TLS_TPREL32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TLS_TPREL32", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_RISCV_TLS_TPREL64, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
64, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TLS_TPREL64", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
MINUS_ONE, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* Reserved for future relocs that the dynamic linker must understand. */
|
|
EMPTY_HOWTO (12),
|
|
EMPTY_HOWTO (13),
|
|
EMPTY_HOWTO (14),
|
|
EMPTY_HOWTO (15),
|
|
|
|
/* 12-bit PC-relative branch offset. */
|
|
HOWTO (R_RISCV_BRANCH, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_BRANCH", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_BTYPE_IMM (-1U), /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
/* 20-bit PC-relative jump offset. */
|
|
HOWTO (R_RISCV_JAL, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_JAL", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_JTYPE_IMM (-1U), /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
/* 32-bit PC-relative function call (AUIPC/JALR). */
|
|
HOWTO (R_RISCV_CALL, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
64, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_CALL", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32),
|
|
/* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
/* Like R_RISCV_CALL, but not locally binding. */
|
|
HOWTO (R_RISCV_CALL_PLT, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
64, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_CALL_PLT", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32),
|
|
/* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
/* High 20 bits of 32-bit PC-relative GOT access. */
|
|
HOWTO (R_RISCV_GOT_HI20, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_GOT_HI20", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* High 20 bits of 32-bit PC-relative TLS IE GOT access. */
|
|
HOWTO (R_RISCV_TLS_GOT_HI20, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TLS_GOT_HI20", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* High 20 bits of 32-bit PC-relative TLS GD GOT reference. */
|
|
HOWTO (R_RISCV_TLS_GD_HI20, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TLS_GD_HI20", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* High 20 bits of 32-bit PC-relative reference. */
|
|
HOWTO (R_RISCV_PCREL_HI20, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_PCREL_HI20", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
/* Low 12 bits of a 32-bit PC-relative load or add. */
|
|
HOWTO (R_RISCV_PCREL_LO12_I, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_PCREL_LO12_I", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_ITYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* Low 12 bits of a 32-bit PC-relative store. */
|
|
HOWTO (R_RISCV_PCREL_LO12_S, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_PCREL_LO12_S", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_STYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* High 20 bits of 32-bit absolute address. */
|
|
HOWTO (R_RISCV_HI20, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_HI20", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* High 12 bits of 32-bit load or add. */
|
|
HOWTO (R_RISCV_LO12_I, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_LO12_I", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_ITYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* High 12 bits of 32-bit store. */
|
|
HOWTO (R_RISCV_LO12_S, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_LO12_S", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_STYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* High 20 bits of TLS LE thread pointer offset. */
|
|
HOWTO (R_RISCV_TPREL_HI20, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TPREL_HI20", /* name */
|
|
true, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_UTYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* Low 12 bits of TLS LE thread pointer offset for loads and adds. */
|
|
HOWTO (R_RISCV_TPREL_LO12_I, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TPREL_LO12_I", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_ITYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* Low 12 bits of TLS LE thread pointer offset for stores. */
|
|
HOWTO (R_RISCV_TPREL_LO12_S, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TPREL_LO12_S", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_STYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* TLS LE thread pointer usage. May be relaxed. */
|
|
HOWTO (R_RISCV_TPREL_ADD, /* type */
|
|
0, /* rightshift */
|
|
3, /* size */
|
|
0, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TPREL_ADD", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 8-bit in-place addition, for local label subtraction. */
|
|
HOWTO (R_RISCV_ADD8, /* type */
|
|
0, /* rightshift */
|
|
0, /* size */
|
|
8, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
riscv_elf_add_sub_reloc, /* special_function */
|
|
"R_RISCV_ADD8", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 16-bit in-place addition, for local label subtraction. */
|
|
HOWTO (R_RISCV_ADD16, /* type */
|
|
0, /* rightshift */
|
|
1, /* size */
|
|
16, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
riscv_elf_add_sub_reloc, /* special_function */
|
|
"R_RISCV_ADD16", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 32-bit in-place addition, for local label subtraction. */
|
|
HOWTO (R_RISCV_ADD32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
riscv_elf_add_sub_reloc, /* special_function */
|
|
"R_RISCV_ADD32", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 64-bit in-place addition, for local label subtraction. */
|
|
HOWTO (R_RISCV_ADD64, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
64, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
riscv_elf_add_sub_reloc, /* special_function */
|
|
"R_RISCV_ADD64", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
MINUS_ONE, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 8-bit in-place addition, for local label subtraction. */
|
|
HOWTO (R_RISCV_SUB8, /* type */
|
|
0, /* rightshift */
|
|
0, /* size */
|
|
8, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
riscv_elf_add_sub_reloc, /* special_function */
|
|
"R_RISCV_SUB8", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 16-bit in-place addition, for local label subtraction. */
|
|
HOWTO (R_RISCV_SUB16, /* type */
|
|
0, /* rightshift */
|
|
1, /* size */
|
|
16, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
riscv_elf_add_sub_reloc, /* special_function */
|
|
"R_RISCV_SUB16", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 32-bit in-place addition, for local label subtraction. */
|
|
HOWTO (R_RISCV_SUB32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
riscv_elf_add_sub_reloc, /* special_function */
|
|
"R_RISCV_SUB32", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 64-bit in-place addition, for local label subtraction. */
|
|
HOWTO (R_RISCV_SUB64, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
64, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
riscv_elf_add_sub_reloc, /* special_function */
|
|
"R_RISCV_SUB64", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
MINUS_ONE, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* GNU extension to record C++ vtable hierarchy */
|
|
HOWTO (R_RISCV_GNU_VTINHERIT, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
0, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
NULL, /* special_function */
|
|
"R_RISCV_GNU_VTINHERIT", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* GNU extension to record C++ vtable member usage */
|
|
HOWTO (R_RISCV_GNU_VTENTRY, /* type */
|
|
0, /* rightshift */
|
|
4, /* size */
|
|
0, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
|
"R_RISCV_GNU_VTENTRY", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* Indicates an alignment statement. The addend field encodes how many
|
|
bytes of NOPs follow the statement. The desired alignment is the
|
|
addend rounded up to the next power of two. */
|
|
HOWTO (R_RISCV_ALIGN, /* type */
|
|
0, /* rightshift */
|
|
3, /* size */
|
|
0, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_ALIGN", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 8-bit PC-relative branch offset. */
|
|
HOWTO (R_RISCV_RVC_BRANCH, /* type */
|
|
0, /* rightshift */
|
|
1, /* size */
|
|
16, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_RVC_BRANCH", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_CBTYPE_IMM (-1U), /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
/* 11-bit PC-relative jump offset. */
|
|
HOWTO (R_RISCV_RVC_JUMP, /* type */
|
|
0, /* rightshift */
|
|
1, /* size */
|
|
16, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_RVC_JUMP", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_CJTYPE_IMM (-1U), /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
/* High 6 bits of 18-bit absolute address. */
|
|
HOWTO (R_RISCV_RVC_LUI, /* type */
|
|
0, /* rightshift */
|
|
1, /* size */
|
|
16, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_RVC_LUI", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_CITYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* GP-relative load. */
|
|
HOWTO (R_RISCV_GPREL_I, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_GPREL_I", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_ITYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* GP-relative store. */
|
|
HOWTO (R_RISCV_GPREL_S, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_GPREL_S", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_STYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* TP-relative TLS LE load. */
|
|
HOWTO (R_RISCV_TPREL_I, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TPREL_I", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_ITYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* TP-relative TLS LE store. */
|
|
HOWTO (R_RISCV_TPREL_S, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_TPREL_S", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
ENCODE_STYPE_IMM (-1U), /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* The paired relocation may be relaxed. */
|
|
HOWTO (R_RISCV_RELAX, /* type */
|
|
0, /* rightshift */
|
|
3, /* size */
|
|
0, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_RELAX", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 6-bit in-place addition, for local label subtraction. */
|
|
HOWTO (R_RISCV_SUB6, /* type */
|
|
0, /* rightshift */
|
|
0, /* size */
|
|
8, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
riscv_elf_add_sub_reloc, /* special_function */
|
|
"R_RISCV_SUB6", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0x3f, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 6-bit in-place setting, for local label subtraction. */
|
|
HOWTO (R_RISCV_SET6, /* type */
|
|
0, /* rightshift */
|
|
0, /* size */
|
|
8, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_SET6", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0x3f, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 8-bit in-place setting, for local label subtraction. */
|
|
HOWTO (R_RISCV_SET8, /* type */
|
|
0, /* rightshift */
|
|
0, /* size */
|
|
8, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_SET8", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 16-bit in-place setting, for local label subtraction. */
|
|
HOWTO (R_RISCV_SET16, /* type */
|
|
0, /* rightshift */
|
|
1, /* size */
|
|
16, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_SET16", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 32-bit in-place setting, for local label subtraction. */
|
|
HOWTO (R_RISCV_SET32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_SET32", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* 32-bit PC relative. */
|
|
HOWTO (R_RISCV_32_PCREL, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_32_PCREL", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
/* Relocation against a local ifunc symbol in a shared object. */
|
|
HOWTO (R_RISCV_IRELATIVE, /* type */
|
|
0, /* rightshift */
|
|
2, /* size */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_RISCV_IRELATIVE", /* name */
|
|
false, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
};
|
|
|
|
/* A mapping from BFD reloc types to RISC-V ELF reloc types. */
|
|
struct elf_reloc_map
|
|
{
|
|
bfd_reloc_code_real_type bfd_val;
|
|
enum elf_riscv_reloc_type elf_val;
|
|
};
|
|
|
|
static const struct elf_reloc_map riscv_reloc_map[] =
|
|
{
|
|
{ BFD_RELOC_NONE, R_RISCV_NONE },
|
|
{ BFD_RELOC_32, R_RISCV_32 },
|
|
{ BFD_RELOC_64, R_RISCV_64 },
|
|
{ BFD_RELOC_RISCV_ADD8, R_RISCV_ADD8 },
|
|
{ BFD_RELOC_RISCV_ADD16, R_RISCV_ADD16 },
|
|
{ BFD_RELOC_RISCV_ADD32, R_RISCV_ADD32 },
|
|
{ BFD_RELOC_RISCV_ADD64, R_RISCV_ADD64 },
|
|
{ BFD_RELOC_RISCV_SUB8, R_RISCV_SUB8 },
|
|
{ BFD_RELOC_RISCV_SUB16, R_RISCV_SUB16 },
|
|
{ BFD_RELOC_RISCV_SUB32, R_RISCV_SUB32 },
|
|
{ BFD_RELOC_RISCV_SUB64, R_RISCV_SUB64 },
|
|
{ BFD_RELOC_CTOR, R_RISCV_64 },
|
|
{ BFD_RELOC_12_PCREL, R_RISCV_BRANCH },
|
|
{ BFD_RELOC_RISCV_HI20, R_RISCV_HI20 },
|
|
{ BFD_RELOC_RISCV_LO12_I, R_RISCV_LO12_I },
|
|
{ BFD_RELOC_RISCV_LO12_S, R_RISCV_LO12_S },
|
|
{ BFD_RELOC_RISCV_PCREL_LO12_I, R_RISCV_PCREL_LO12_I },
|
|
{ BFD_RELOC_RISCV_PCREL_LO12_S, R_RISCV_PCREL_LO12_S },
|
|
{ BFD_RELOC_RISCV_CALL, R_RISCV_CALL },
|
|
{ BFD_RELOC_RISCV_CALL_PLT, R_RISCV_CALL_PLT },
|
|
{ BFD_RELOC_RISCV_PCREL_HI20, R_RISCV_PCREL_HI20 },
|
|
{ BFD_RELOC_RISCV_JMP, R_RISCV_JAL },
|
|
{ BFD_RELOC_RISCV_GOT_HI20, R_RISCV_GOT_HI20 },
|
|
{ BFD_RELOC_RISCV_TLS_DTPMOD32, R_RISCV_TLS_DTPMOD32 },
|
|
{ BFD_RELOC_RISCV_TLS_DTPREL32, R_RISCV_TLS_DTPREL32 },
|
|
{ BFD_RELOC_RISCV_TLS_DTPMOD64, R_RISCV_TLS_DTPMOD64 },
|
|
{ BFD_RELOC_RISCV_TLS_DTPREL64, R_RISCV_TLS_DTPREL64 },
|
|
{ BFD_RELOC_RISCV_TLS_TPREL32, R_RISCV_TLS_TPREL32 },
|
|
{ BFD_RELOC_RISCV_TLS_TPREL64, R_RISCV_TLS_TPREL64 },
|
|
{ BFD_RELOC_RISCV_TPREL_HI20, R_RISCV_TPREL_HI20 },
|
|
{ BFD_RELOC_RISCV_TPREL_ADD, R_RISCV_TPREL_ADD },
|
|
{ BFD_RELOC_RISCV_TPREL_LO12_S, R_RISCV_TPREL_LO12_S },
|
|
{ BFD_RELOC_RISCV_TPREL_LO12_I, R_RISCV_TPREL_LO12_I },
|
|
{ BFD_RELOC_RISCV_TLS_GOT_HI20, R_RISCV_TLS_GOT_HI20 },
|
|
{ BFD_RELOC_RISCV_TLS_GD_HI20, R_RISCV_TLS_GD_HI20 },
|
|
{ BFD_RELOC_RISCV_ALIGN, R_RISCV_ALIGN },
|
|
{ BFD_RELOC_RISCV_RVC_BRANCH, R_RISCV_RVC_BRANCH },
|
|
{ BFD_RELOC_RISCV_RVC_JUMP, R_RISCV_RVC_JUMP },
|
|
{ BFD_RELOC_RISCV_RVC_LUI, R_RISCV_RVC_LUI },
|
|
{ BFD_RELOC_RISCV_GPREL_I, R_RISCV_GPREL_I },
|
|
{ BFD_RELOC_RISCV_GPREL_S, R_RISCV_GPREL_S },
|
|
{ BFD_RELOC_RISCV_TPREL_I, R_RISCV_TPREL_I },
|
|
{ BFD_RELOC_RISCV_TPREL_S, R_RISCV_TPREL_S },
|
|
{ BFD_RELOC_RISCV_RELAX, R_RISCV_RELAX },
|
|
{ BFD_RELOC_RISCV_SUB6, R_RISCV_SUB6 },
|
|
{ BFD_RELOC_RISCV_SET6, R_RISCV_SET6 },
|
|
{ BFD_RELOC_RISCV_SET8, R_RISCV_SET8 },
|
|
{ BFD_RELOC_RISCV_SET16, R_RISCV_SET16 },
|
|
{ BFD_RELOC_RISCV_SET32, R_RISCV_SET32 },
|
|
{ BFD_RELOC_RISCV_32_PCREL, R_RISCV_32_PCREL },
|
|
};
|
|
|
|
/* Given a BFD reloc type, return a howto structure. */
|
|
|
|
reloc_howto_type *
|
|
riscv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
|
bfd_reloc_code_real_type code)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE (riscv_reloc_map); i++)
|
|
if (riscv_reloc_map[i].bfd_val == code)
|
|
return &howto_table[(int) riscv_reloc_map[i].elf_val];
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return NULL;
|
|
}
|
|
|
|
reloc_howto_type *
|
|
riscv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE (howto_table); i++)
|
|
if (howto_table[i].name && strcasecmp (howto_table[i].name, r_name) == 0)
|
|
return &howto_table[i];
|
|
|
|
return NULL;
|
|
}
|
|
|
|
reloc_howto_type *
|
|
riscv_elf_rtype_to_howto (bfd *abfd, unsigned int r_type)
|
|
{
|
|
if (r_type >= ARRAY_SIZE (howto_table))
|
|
{
|
|
(*_bfd_error_handler) (_("%pB: unsupported relocation type %#x"),
|
|
abfd, r_type);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return NULL;
|
|
}
|
|
return &howto_table[r_type];
|
|
}
|
|
|
|
/* Special_function of RISCV_ADD and RISCV_SUB relocations. */
|
|
|
|
static bfd_reloc_status_type
|
|
riscv_elf_add_sub_reloc (bfd *abfd,
|
|
arelent *reloc_entry,
|
|
asymbol *symbol,
|
|
void *data,
|
|
asection *input_section,
|
|
bfd *output_bfd,
|
|
char **error_message ATTRIBUTE_UNUSED)
|
|
{
|
|
reloc_howto_type *howto = reloc_entry->howto;
|
|
bfd_vma relocation;
|
|
|
|
if (output_bfd != NULL
|
|
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
|
&& (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
|
|
{
|
|
reloc_entry->address += input_section->output_offset;
|
|
return bfd_reloc_ok;
|
|
}
|
|
|
|
if (output_bfd != NULL)
|
|
return bfd_reloc_continue;
|
|
|
|
relocation = symbol->value + symbol->section->output_section->vma
|
|
+ symbol->section->output_offset + reloc_entry->addend;
|
|
bfd_vma old_value = bfd_get (howto->bitsize, abfd,
|
|
data + reloc_entry->address);
|
|
|
|
switch (howto->type)
|
|
{
|
|
case R_RISCV_ADD8:
|
|
case R_RISCV_ADD16:
|
|
case R_RISCV_ADD32:
|
|
case R_RISCV_ADD64:
|
|
relocation = old_value + relocation;
|
|
break;
|
|
case R_RISCV_SUB6:
|
|
case R_RISCV_SUB8:
|
|
case R_RISCV_SUB16:
|
|
case R_RISCV_SUB32:
|
|
case R_RISCV_SUB64:
|
|
relocation = old_value - relocation;
|
|
break;
|
|
}
|
|
bfd_put (howto->bitsize, abfd, relocation, data + reloc_entry->address);
|
|
|
|
return bfd_reloc_ok;
|
|
}
|
|
|
|
/* Lists of prefixed class extensions that binutils should know about.
|
|
Whether or not a particular entry is in these lists will dictate if
|
|
gas/ld will accept its presence in the architecture string.
|
|
|
|
Please add the extensions to the lists in lower case. However, keep
|
|
these subsets in alphabetical order in these tables is recommended,
|
|
although there is no impact on the current implementation. */
|
|
|
|
static const char * const riscv_std_z_ext_strtab[] =
|
|
{
|
|
"zba", "zbb", "zbc", "zicsr", "zifencei", "zihintpause", NULL
|
|
};
|
|
|
|
static const char * const riscv_std_s_ext_strtab[] =
|
|
{
|
|
NULL
|
|
};
|
|
|
|
static const char * const riscv_std_h_ext_strtab[] =
|
|
{
|
|
NULL
|
|
};
|
|
|
|
static const char * const riscv_std_zxm_ext_strtab[] =
|
|
{
|
|
NULL
|
|
};
|
|
|
|
/* ISA extension prefixed name class. Must define them in parsing order. */
|
|
enum riscv_prefix_ext_class
|
|
{
|
|
RV_ISA_CLASS_Z = 1,
|
|
RV_ISA_CLASS_S,
|
|
RV_ISA_CLASS_H,
|
|
RV_ISA_CLASS_ZXM,
|
|
RV_ISA_CLASS_X,
|
|
RV_ISA_CLASS_UNKNOWN
|
|
};
|
|
|
|
/* Record the strings of the prefixed extensions, and their corresponding
|
|
classes. The more letters of the prefix string, the more forward it must
|
|
be defined. Otherwise, the riscv_get_prefix_class will map it to the
|
|
wrong classes. */
|
|
struct riscv_parse_prefix_config
|
|
{
|
|
/* Class of the extension. */
|
|
enum riscv_prefix_ext_class class;
|
|
|
|
/* Prefix string for error printing and internal parser usage. */
|
|
const char *prefix;
|
|
};
|
|
static const struct riscv_parse_prefix_config parse_config[] =
|
|
{
|
|
{RV_ISA_CLASS_ZXM, "zxm"},
|
|
{RV_ISA_CLASS_Z, "z"},
|
|
{RV_ISA_CLASS_S, "s"},
|
|
{RV_ISA_CLASS_H, "h"},
|
|
{RV_ISA_CLASS_X, "x"},
|
|
{RV_ISA_CLASS_UNKNOWN, NULL}
|
|
};
|
|
|
|
/* Get the prefixed name class for the extensions, the class also
|
|
means the order of the prefixed extensions. */
|
|
|
|
static enum riscv_prefix_ext_class
|
|
riscv_get_prefix_class (const char *arch)
|
|
{
|
|
int i = 0;
|
|
while (parse_config[i].class != RV_ISA_CLASS_UNKNOWN)
|
|
{
|
|
if (strncmp (arch, parse_config[i].prefix,
|
|
strlen (parse_config[i].prefix)) == 0)
|
|
return parse_config[i].class;
|
|
i++;
|
|
}
|
|
return RV_ISA_CLASS_UNKNOWN;
|
|
}
|
|
|
|
/* Check KNOWN_EXTS to see if the EXT is supported. */
|
|
|
|
static bool
|
|
riscv_known_prefixed_ext (const char *ext,
|
|
const char *const *known_exts)
|
|
{
|
|
size_t i;
|
|
for (i = 0; known_exts[i]; ++i)
|
|
if (strcmp (ext, known_exts[i]) == 0)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
/* Check whether the prefixed extension is valid or not. Return
|
|
true if valid, otehrwise return false. */
|
|
|
|
static bool
|
|
riscv_valid_prefixed_ext (const char *ext)
|
|
{
|
|
enum riscv_prefix_ext_class class = riscv_get_prefix_class (ext);
|
|
switch (class)
|
|
{
|
|
case RV_ISA_CLASS_Z:
|
|
return riscv_known_prefixed_ext (ext, riscv_std_z_ext_strtab);
|
|
case RV_ISA_CLASS_ZXM:
|
|
return riscv_known_prefixed_ext (ext, riscv_std_zxm_ext_strtab);
|
|
case RV_ISA_CLASS_S:
|
|
return riscv_known_prefixed_ext (ext, riscv_std_s_ext_strtab);
|
|
case RV_ISA_CLASS_H:
|
|
return riscv_known_prefixed_ext (ext, riscv_std_h_ext_strtab);
|
|
case RV_ISA_CLASS_X:
|
|
/* Only the single x is invalid. */
|
|
if (strcmp (ext, "x") != 0)
|
|
return true;
|
|
default:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/* Array is used to compare the orders of standard extensions quickly. */
|
|
static int riscv_ext_order[26] = {0};
|
|
|
|
/* Init the riscv_ext_order array. */
|
|
|
|
static void
|
|
riscv_init_ext_order (void)
|
|
{
|
|
static bool inited = false;
|
|
const char *std_base_exts = "eig";
|
|
const char *std_remain_exts = riscv_supported_std_ext ();
|
|
const char *ext;
|
|
int order;
|
|
|
|
if (inited)
|
|
return;
|
|
|
|
/* The orders of all standard extensions are positive. */
|
|
order = 1;
|
|
|
|
/* Init the standard base extensions first. */
|
|
for (ext = std_base_exts; *ext; ext++)
|
|
riscv_ext_order[(*ext - 'a')] = order++;
|
|
|
|
/* Init the standard remaining extensions. */
|
|
for (ext = std_remain_exts; *ext; ext++)
|
|
riscv_ext_order[(*ext - 'a')] = order++;
|
|
|
|
/* Some of the prefixed keyword are not single letter, so we set
|
|
their prefixed orders in the riscv_compare_subsets directly,
|
|
not through the riscv_ext_order. */
|
|
|
|
inited = true;
|
|
}
|
|
|
|
/* Similar to the strcmp. It returns an integer less than, equal to,
|
|
or greater than zero if `subset2` is found, respectively, to be less
|
|
than, to match, or be greater than `subset1`.
|
|
|
|
The order values,
|
|
Zero: Preserved keywords.
|
|
Positive number: Standard extensions.
|
|
Negative number: Prefixed keywords. */
|
|
|
|
int
|
|
riscv_compare_subsets (const char *subset1, const char *subset2)
|
|
{
|
|
int order1 = riscv_ext_order[(*subset1 - 'a')];
|
|
int order2 = riscv_ext_order[(*subset2 - 'a')];
|
|
|
|
/* Compare the standard extension first. */
|
|
if (order1 > 0 && order2 > 0)
|
|
return order1 - order2;
|
|
|
|
/* Set the prefixed orders to negative numbers. */
|
|
enum riscv_prefix_ext_class class1 = riscv_get_prefix_class (subset1);
|
|
enum riscv_prefix_ext_class class2 = riscv_get_prefix_class (subset2);
|
|
|
|
if (class1 != RV_ISA_CLASS_UNKNOWN)
|
|
order1 = - (int) class1;
|
|
if (class2 != RV_ISA_CLASS_UNKNOWN)
|
|
order2 = - (int) class2;
|
|
|
|
if (order1 == order2)
|
|
{
|
|
/* Compare the standard addition z extensions. */
|
|
if (class1 == RV_ISA_CLASS_Z)
|
|
{
|
|
order1 = riscv_ext_order[(*++subset1 - 'a')];
|
|
order2 = riscv_ext_order[(*++subset2 - 'a')];
|
|
if (order1 != order2)
|
|
return order1 - order2;
|
|
}
|
|
return strcasecmp (++subset1, ++subset2);
|
|
}
|
|
|
|
return order2 - order1;
|
|
}
|
|
|
|
/* Find subset in the list. Return TRUE and set `current` to the subset
|
|
if it is found. Otherwise, return FALSE and set `current` to the place
|
|
where we should insert the subset. However, return FALSE with the NULL
|
|
`current` means we should insert the subset at the head of subset list,
|
|
if needed. */
|
|
|
|
bool
|
|
riscv_lookup_subset (const riscv_subset_list_t *subset_list,
|
|
const char *subset,
|
|
riscv_subset_t **current)
|
|
{
|
|
riscv_subset_t *s, *pre_s = NULL;
|
|
|
|
for (s = subset_list->head;
|
|
s != NULL;
|
|
pre_s = s, s = s->next)
|
|
{
|
|
int cmp = riscv_compare_subsets (s->name, subset);
|
|
if (cmp == 0)
|
|
{
|
|
*current = s;
|
|
return true;
|
|
}
|
|
else if (cmp > 0)
|
|
break;
|
|
}
|
|
*current = pre_s;
|
|
return false;
|
|
}
|
|
|
|
/* Add extension from ISA string to the last of the subset list. */
|
|
|
|
void
|
|
riscv_add_subset (riscv_subset_list_t *subset_list,
|
|
const char *subset,
|
|
int major,
|
|
int minor)
|
|
{
|
|
riscv_subset_t *s = xmalloc (sizeof *s);
|
|
|
|
if (subset_list->head == NULL)
|
|
subset_list->head = s;
|
|
|
|
s->name = xstrdup (subset);
|
|
s->major_version = major;
|
|
s->minor_version = minor;
|
|
s->next = NULL;
|
|
|
|
if (subset_list->tail != NULL)
|
|
subset_list->tail->next = s;
|
|
subset_list->tail = s;
|
|
}
|
|
|
|
/* Add the implicit extension to the subset list. Search the
|
|
list first, and then find the right place to add. */
|
|
|
|
static void
|
|
riscv_add_implicit_subset (riscv_subset_list_t *subset_list,
|
|
const char *subset,
|
|
int major,
|
|
int minor)
|
|
{
|
|
riscv_subset_t *current, *new;
|
|
|
|
if (riscv_lookup_subset (subset_list, subset, ¤t))
|
|
return;
|
|
|
|
new = xmalloc (sizeof *new);
|
|
new->name = xstrdup (subset);
|
|
new->major_version = major;
|
|
new->minor_version = minor;
|
|
new->next = NULL;
|
|
|
|
if (current != NULL)
|
|
{
|
|
new->next = current->next;
|
|
current->next = new;
|
|
}
|
|
else
|
|
{
|
|
new->next = subset_list->head;
|
|
subset_list->head = new;
|
|
}
|
|
}
|
|
|
|
/* We have to add all extensions from ISA string first, and then start to
|
|
add their implicit extensions. The extensions from ISA string must be
|
|
set in order, so we can add them to the last of the subset list
|
|
directly, without searching.
|
|
|
|
Find the default versions for the extension before adding them to
|
|
the subset list, if their versions are RISCV_UNKNOWN_VERSION.
|
|
Afterwards, report errors if we can not find their default versions. */
|
|
|
|
static void
|
|
riscv_parse_add_subset (riscv_parse_subset_t *rps,
|
|
const char *subset,
|
|
int major,
|
|
int minor,
|
|
bool implicit)
|
|
{
|
|
int major_version = major;
|
|
int minor_version = minor;
|
|
|
|
if ((major_version == RISCV_UNKNOWN_VERSION
|
|
|| minor_version == RISCV_UNKNOWN_VERSION)
|
|
&& rps->get_default_version != NULL)
|
|
rps->get_default_version (subset, &major_version, &minor_version);
|
|
|
|
/* We don't care the versions of the implicit extensions. */
|
|
if (!implicit
|
|
&& (major_version == RISCV_UNKNOWN_VERSION
|
|
|| minor_version == RISCV_UNKNOWN_VERSION))
|
|
{
|
|
if (subset[0] == 'x')
|
|
rps->error_handler
|
|
(_("x ISA extension `%s' must be set with the versions"),
|
|
subset);
|
|
else
|
|
rps->error_handler
|
|
(_("cannot find default versions of the ISA extension `%s'"),
|
|
subset);
|
|
return;
|
|
}
|
|
|
|
if (!implicit)
|
|
riscv_add_subset (rps->subset_list, subset,
|
|
major_version, minor_version);
|
|
else
|
|
riscv_add_implicit_subset (rps->subset_list, subset,
|
|
major_version, minor_version);
|
|
}
|
|
|
|
/* Release subset list. */
|
|
|
|
void
|
|
riscv_release_subset_list (riscv_subset_list_t *subset_list)
|
|
{
|
|
while (subset_list->head != NULL)
|
|
{
|
|
riscv_subset_t *next = subset_list->head->next;
|
|
free ((void *)subset_list->head->name);
|
|
free (subset_list->head);
|
|
subset_list->head = next;
|
|
}
|
|
|
|
subset_list->tail = NULL;
|
|
}
|
|
|
|
/* Parsing extension version.
|
|
|
|
Return Value:
|
|
Points to the end of version
|
|
|
|
Arguments:
|
|
`rps`: Hooks and status for parsing extensions.
|
|
`march`: Full ISA string.
|
|
`p`: Curent parsing position.
|
|
`major_version`: Parsed major version.
|
|
`minor_version`: Parsed minor version.
|
|
`std_ext_p`: True if parsing standard extension. */
|
|
|
|
static const char *
|
|
riscv_parsing_subset_version (riscv_parse_subset_t *rps,
|
|
const char *march,
|
|
const char *p,
|
|
int *major_version,
|
|
int *minor_version,
|
|
bool std_ext_p)
|
|
{
|
|
bool major_p = true;
|
|
int version = 0;
|
|
char np;
|
|
|
|
*major_version = 0;
|
|
*minor_version = 0;
|
|
for (; *p; ++p)
|
|
{
|
|
if (*p == 'p')
|
|
{
|
|
np = *(p + 1);
|
|
|
|
if (!ISDIGIT (np))
|
|
{
|
|
/* Might be beginning of `p` extension. */
|
|
if (std_ext_p)
|
|
{
|
|
*major_version = version;
|
|
*minor_version = 0;
|
|
return p;
|
|
}
|
|
else
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: expect number after `%dp'"),
|
|
march, version);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
*major_version = version;
|
|
major_p = false;
|
|
version = 0;
|
|
}
|
|
else if (ISDIGIT (*p))
|
|
version = (version * 10) + (*p - '0');
|
|
else
|
|
break;
|
|
}
|
|
|
|
if (major_p)
|
|
*major_version = version;
|
|
else
|
|
*minor_version = version;
|
|
|
|
/* We can not find any version in string. */
|
|
if (*major_version == 0 && *minor_version == 0)
|
|
{
|
|
*major_version = RISCV_UNKNOWN_VERSION;
|
|
*minor_version = RISCV_UNKNOWN_VERSION;
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
/* Return string which contain all supported standard extensions in
|
|
canonical order. */
|
|
|
|
const char *
|
|
riscv_supported_std_ext (void)
|
|
{
|
|
return "mafdqlcbjtpvn";
|
|
}
|
|
|
|
/* Parsing function for standard extensions.
|
|
|
|
Return Value:
|
|
Points to the end of extensions.
|
|
|
|
Arguments:
|
|
`rps`: Hooks and status for parsing extensions.
|
|
`march`: Full ISA string.
|
|
`p`: Curent parsing position. */
|
|
|
|
static const char *
|
|
riscv_parse_std_ext (riscv_parse_subset_t *rps,
|
|
const char *march,
|
|
const char *p)
|
|
{
|
|
const char *all_std_exts = riscv_supported_std_ext ();
|
|
const char *std_exts = all_std_exts;
|
|
int major_version;
|
|
int minor_version;
|
|
char subset[2] = {0, 0};
|
|
|
|
/* First letter must start with i, e or g. */
|
|
switch (*p)
|
|
{
|
|
case 'i':
|
|
p = riscv_parsing_subset_version (rps, march, ++p,
|
|
&major_version,
|
|
&minor_version, true);
|
|
riscv_parse_add_subset (rps, "i",
|
|
major_version,
|
|
minor_version, false);
|
|
break;
|
|
|
|
case 'e':
|
|
p = riscv_parsing_subset_version (rps, march, ++p,
|
|
&major_version,
|
|
&minor_version, true);
|
|
riscv_parse_add_subset (rps, "e",
|
|
major_version,
|
|
minor_version, false);
|
|
if (*rps->xlen > 32)
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: rv%de is not a valid base ISA"),
|
|
march, *rps->xlen);
|
|
return NULL;
|
|
}
|
|
break;
|
|
|
|
case 'g':
|
|
p = riscv_parsing_subset_version (rps, march, ++p,
|
|
&major_version,
|
|
&minor_version, true);
|
|
/* Expand g to imafd. */
|
|
riscv_parse_add_subset (rps, "i",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, false);
|
|
for ( ; *std_exts != 'q'; std_exts++)
|
|
{
|
|
subset[0] = *std_exts;
|
|
riscv_parse_add_subset (rps, subset,
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, false);
|
|
}
|
|
/* Add g as an implicit extension. */
|
|
riscv_parse_add_subset (rps, "g",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
break;
|
|
|
|
default:
|
|
rps->error_handler
|
|
(_("-march=%s: first ISA extension must be `e', `i' or `g'"),
|
|
march);
|
|
return NULL;
|
|
}
|
|
|
|
while (p != NULL && *p != '\0')
|
|
{
|
|
/* Stop when we parsed the known prefix class. */
|
|
enum riscv_prefix_ext_class class = riscv_get_prefix_class (p);
|
|
if (class != RV_ISA_CLASS_UNKNOWN)
|
|
break;
|
|
|
|
if (*p == '_')
|
|
{
|
|
p++;
|
|
continue;
|
|
}
|
|
|
|
/* Checking canonical order. */
|
|
char std_ext = *p;
|
|
while (*std_exts && std_ext != *std_exts)
|
|
std_exts++;
|
|
|
|
if (std_ext != *std_exts)
|
|
{
|
|
if (riscv_ext_order[(std_ext - 'a')] == 0)
|
|
rps->error_handler
|
|
(_("-march=%s: unknown standard and prefixed ISA "
|
|
"extension `%s'"), march, p);
|
|
else
|
|
rps->error_handler
|
|
(_("-march=%s: standard ISA extension `%c' is not "
|
|
"in canonical order"), march, std_ext);
|
|
return NULL;
|
|
}
|
|
|
|
std_exts++;
|
|
subset[0] = std_ext;
|
|
p = riscv_parsing_subset_version (rps, march, ++p,
|
|
&major_version,
|
|
&minor_version, true);
|
|
riscv_parse_add_subset (rps, subset,
|
|
major_version,
|
|
minor_version, false);
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
/* Parsing function for prefixed extensions.
|
|
|
|
Return Value:
|
|
Points to the end of extension.
|
|
|
|
Arguments:
|
|
`rps`: Hooks and status for parsing extensions.
|
|
`march`: Full ISA string.
|
|
`p`: Curent parsing position. */
|
|
|
|
static const char *
|
|
riscv_parse_prefixed_ext (riscv_parse_subset_t *rps,
|
|
const char *march,
|
|
const char *p)
|
|
{
|
|
int major_version;
|
|
int minor_version;
|
|
const char *last_name;
|
|
enum riscv_prefix_ext_class class;
|
|
|
|
while (*p)
|
|
{
|
|
if (*p == '_')
|
|
{
|
|
p++;
|
|
continue;
|
|
}
|
|
|
|
class = riscv_get_prefix_class (p);
|
|
if (class == RV_ISA_CLASS_UNKNOWN)
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: unknown prefix class for the ISA extension `%s'"),
|
|
march, p);
|
|
return NULL;
|
|
}
|
|
|
|
char *subset = xstrdup (p);
|
|
char *q = subset;
|
|
const char *end_of_version;
|
|
|
|
while (*++q != '\0' && *q != '_' && !ISDIGIT (*q))
|
|
;
|
|
|
|
end_of_version =
|
|
riscv_parsing_subset_version (rps, march, q,
|
|
&major_version,
|
|
&minor_version, false);
|
|
*q = '\0';
|
|
|
|
if (end_of_version == NULL)
|
|
{
|
|
free (subset);
|
|
return NULL;
|
|
}
|
|
|
|
/* Check if the prefix extension is known.
|
|
For 'x', anything goes but it cannot simply be 'x'.
|
|
For other prefixed extensions, it must be known from a list
|
|
and cannot simply be the prefixed name. */
|
|
|
|
/* Check that the extension name is well-formed. */
|
|
if (!riscv_valid_prefixed_ext (subset))
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: unknown prefixed ISA extension `%s'"),
|
|
march, subset);
|
|
free (subset);
|
|
return NULL;
|
|
}
|
|
|
|
/* Check that the extension isn't duplicate. */
|
|
last_name = rps->subset_list->tail->name;
|
|
if (!strcasecmp (last_name, subset))
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: duplicate prefixed ISA extension `%s'"),
|
|
march, subset);
|
|
free (subset);
|
|
return NULL;
|
|
}
|
|
|
|
/* Check that the extension is in expected order. */
|
|
if (riscv_compare_subsets (last_name, subset) > 0)
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: prefixed ISA extension `%s' is not in expected "
|
|
"order. It must come before `%s'"),
|
|
march, subset, last_name);
|
|
free (subset);
|
|
return NULL;
|
|
}
|
|
|
|
riscv_parse_add_subset (rps, subset,
|
|
major_version,
|
|
minor_version, false);
|
|
p += end_of_version - subset;
|
|
free (subset);
|
|
|
|
if (*p != '\0' && *p != '_')
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: prefixed ISA extension must separate with _"),
|
|
march);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
/* Add the implicit extensions. */
|
|
|
|
static void
|
|
riscv_parse_add_implicit_subsets (riscv_parse_subset_t *rps)
|
|
{
|
|
riscv_subset_t *subset = NULL;
|
|
|
|
if (riscv_lookup_subset (rps->subset_list, "e", &subset))
|
|
riscv_parse_add_subset (rps, "i",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
|
|
/* Add the zicsr and zifencei only when the i's version less than 2.1. */
|
|
if (riscv_lookup_subset (rps->subset_list, "i", &subset)
|
|
&& (subset->major_version < 2
|
|
|| (subset->major_version == 2
|
|
&& subset->minor_version < 1)))
|
|
{
|
|
riscv_parse_add_subset (rps, "zicsr",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
riscv_parse_add_subset (rps, "zifencei",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
}
|
|
|
|
if (riscv_lookup_subset (rps->subset_list, "q", &subset))
|
|
{
|
|
riscv_parse_add_subset (rps, "d",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
riscv_parse_add_subset (rps, "f",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
riscv_parse_add_subset (rps, "zicsr",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
}
|
|
else if (riscv_lookup_subset (rps->subset_list, "d", &subset))
|
|
{
|
|
riscv_parse_add_subset (rps, "f",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
riscv_parse_add_subset (rps, "zicsr",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
}
|
|
else if (riscv_lookup_subset (rps->subset_list, "f", &subset))
|
|
riscv_parse_add_subset (rps, "zicsr",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
|
|
if (riscv_lookup_subset (rps->subset_list, "g", &subset))
|
|
{
|
|
riscv_parse_add_subset (rps, "zicsr",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
riscv_parse_add_subset (rps, "zifencei",
|
|
RISCV_UNKNOWN_VERSION,
|
|
RISCV_UNKNOWN_VERSION, true);
|
|
}
|
|
}
|
|
|
|
/* Function for parsing ISA string.
|
|
|
|
Return Value:
|
|
Return TRUE on success.
|
|
|
|
Arguments:
|
|
`rps`: Hooks and status for parsing extensions.
|
|
`arch`: Full ISA string. */
|
|
|
|
bool
|
|
riscv_parse_subset (riscv_parse_subset_t *rps,
|
|
const char *arch)
|
|
{
|
|
riscv_subset_t *subset = NULL;
|
|
const char *p;
|
|
bool no_conflict = true;
|
|
|
|
for (p = arch; *p != '\0'; p++)
|
|
{
|
|
if (ISUPPER (*p))
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: ISA string cannot contain uppercase letters"),
|
|
arch);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
p = arch;
|
|
if (startswith (p, "rv32"))
|
|
{
|
|
*rps->xlen = 32;
|
|
p += 4;
|
|
}
|
|
else if (startswith (p, "rv64"))
|
|
{
|
|
*rps->xlen = 64;
|
|
p += 4;
|
|
}
|
|
else
|
|
{
|
|
/* ISA string shouldn't be NULL or empty here. However,
|
|
it might be empty only when we failed to merge the ISA
|
|
string in the riscv_merge_attributes. We have already
|
|
issued the correct error message in another side, so do
|
|
not issue this error when the ISA string is empty. */
|
|
if (strlen (arch))
|
|
rps->error_handler (
|
|
_("-march=%s: ISA string must begin with rv32 or rv64"),
|
|
arch);
|
|
return false;
|
|
}
|
|
|
|
/* Init the riscv_ext_order array to compare the order of extensions
|
|
quickly. */
|
|
riscv_init_ext_order ();
|
|
|
|
/* Parsing standard extension. */
|
|
p = riscv_parse_std_ext (rps, arch, p);
|
|
|
|
if (p == NULL)
|
|
return false;
|
|
|
|
/* Parse the different classes of extensions in the specified order. */
|
|
while (*p != '\0')
|
|
{
|
|
p = riscv_parse_prefixed_ext (rps, arch, p);
|
|
|
|
if (p == NULL)
|
|
return false;
|
|
}
|
|
|
|
/* Finally add implicit extensions according to the current
|
|
extensions. */
|
|
riscv_parse_add_implicit_subsets (rps);
|
|
|
|
/* Check the conflicts. */
|
|
if (riscv_lookup_subset (rps->subset_list, "e", &subset)
|
|
&& riscv_lookup_subset (rps->subset_list, "f", &subset))
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: rv32e does not support the `f' extension"),
|
|
arch);
|
|
no_conflict = false;
|
|
}
|
|
if (riscv_lookup_subset (rps->subset_list, "q", &subset)
|
|
&& *rps->xlen < 64)
|
|
{
|
|
rps->error_handler
|
|
(_("-march=%s: rv32 does not support the `q' extension"),
|
|
arch);
|
|
no_conflict = false;
|
|
}
|
|
return no_conflict;
|
|
}
|
|
|
|
/* Return the number of digits for the input. */
|
|
|
|
size_t
|
|
riscv_estimate_digit (unsigned num)
|
|
{
|
|
size_t digit = 0;
|
|
if (num == 0)
|
|
return 1;
|
|
|
|
for (digit = 0; num ; num /= 10)
|
|
digit++;
|
|
|
|
return digit;
|
|
}
|
|
|
|
/* Auxiliary function to estimate string length of subset list. */
|
|
|
|
static size_t
|
|
riscv_estimate_arch_strlen1 (const riscv_subset_t *subset)
|
|
{
|
|
if (subset == NULL)
|
|
return 6; /* For rv32/rv64/rv128 and string terminator. */
|
|
|
|
return riscv_estimate_arch_strlen1 (subset->next)
|
|
+ strlen (subset->name)
|
|
+ riscv_estimate_digit (subset->major_version)
|
|
+ 1 /* For version seperator 'p'. */
|
|
+ riscv_estimate_digit (subset->minor_version)
|
|
+ 1 /* For underscore. */;
|
|
}
|
|
|
|
/* Estimate the string length of this subset list. */
|
|
|
|
static size_t
|
|
riscv_estimate_arch_strlen (const riscv_subset_list_t *subset_list)
|
|
{
|
|
return riscv_estimate_arch_strlen1 (subset_list->head);
|
|
}
|
|
|
|
/* Auxiliary function to convert subset info to string. */
|
|
|
|
static void
|
|
riscv_arch_str1 (riscv_subset_t *subset,
|
|
char *attr_str, char *buf, size_t bufsz)
|
|
{
|
|
const char *underline = "_";
|
|
riscv_subset_t *subset_t = subset;
|
|
|
|
if (subset_t == NULL)
|
|
return;
|
|
|
|
/* No underline between rvXX and i/e. */
|
|
if ((strcasecmp (subset_t->name, "i") == 0)
|
|
|| (strcasecmp (subset_t->name, "e") == 0))
|
|
underline = "";
|
|
|
|
snprintf (buf, bufsz, "%s%s%dp%d",
|
|
underline,
|
|
subset_t->name,
|
|
subset_t->major_version,
|
|
subset_t->minor_version);
|
|
|
|
strncat (attr_str, buf, bufsz);
|
|
|
|
/* Skip 'i' extension after 'e', or skip extensions which
|
|
versions are unknown. */
|
|
while (subset_t->next
|
|
&& ((strcmp (subset_t->name, "e") == 0
|
|
&& strcmp (subset_t->next->name, "i") == 0)
|
|
|| subset_t->next->major_version == RISCV_UNKNOWN_VERSION
|
|
|| subset_t->next->minor_version == RISCV_UNKNOWN_VERSION))
|
|
subset_t = subset_t->next;
|
|
|
|
riscv_arch_str1 (subset_t->next, attr_str, buf, bufsz);
|
|
}
|
|
|
|
/* Convert subset information into string with explicit versions. */
|
|
|
|
char *
|
|
riscv_arch_str (unsigned xlen, const riscv_subset_list_t *subset)
|
|
{
|
|
size_t arch_str_len = riscv_estimate_arch_strlen (subset);
|
|
char *attr_str = xmalloc (arch_str_len);
|
|
char *buf = xmalloc (arch_str_len);
|
|
|
|
snprintf (attr_str, arch_str_len, "rv%u", xlen);
|
|
|
|
riscv_arch_str1 (subset->head, attr_str, buf, arch_str_len);
|
|
free (buf);
|
|
|
|
return attr_str;
|
|
}
|