mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-02-11 13:02:10 +08:00
00d4d1b0a3
G is a special case, consider the ISA spec github issue as follows, https://github.com/riscv/riscv-isa-manual/issues/575 My understand is that - i, m, a, f and d extensions are not g's implicit extensions, they are g's expansions. The zifencei is the implicit extension of g, and so is zicsr, since it is implicited by f (or i2p1). However, we add the g with the RISCV_UNKNOWN_VERSION to the subset list, and it will not output to the arch string, it is only used to check what implicit extensions are need to be added. bfd/ * elfxx-riscv.c (riscv_parse_add_subset): Allow to add g with RISCV_UNKNOWN_VERSION versions. (riscv_parse_std_ext): Add g to the subset list, we only use it to add the implicit extensions, but won't output it to arch string. (riscv_parse_add_implicit_subsets): Add implicit zicsr and zifencei for g extension. (riscv_arch_str1): Do not output g to the arch string. * elfxx-riscv.h (RISCV_UNKNOWN_VERSION): Moved to include/opcode/riscv.h. gas/ * testsuite/gas/riscv/attribute-10.d: Updated. * testsuite/gas/riscv/march-imply-g.d: New testcase for g. * testsuite/gas/riscv/march-imply-unsupported.d: The zicsr and zifencei are not supported in the ISA spec v2.2, so don't add and output them. include/ * opcode/riscv.h (RISCV_UNKNOWN_VERSION): added.
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/* RISC-V ELF specific backend routines.
|
|
Copyright (C) 2011-2020 Free Software Foundation, Inc.
|
|
|
|
Contributed by Andrew Waterman (andrew@sifive.com).
|
|
Based on MIPS target.
|
|
|
|
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 "elf/common.h"
|
|
#include "elf/internal.h"
|
|
#include "opcode/riscv.h"
|
|
|
|
extern reloc_howto_type *
|
|
riscv_reloc_name_lookup (bfd *, const char *);
|
|
|
|
extern reloc_howto_type *
|
|
riscv_reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
|
|
|
|
extern reloc_howto_type *
|
|
riscv_elf_rtype_to_howto (bfd *, unsigned int r_type);
|
|
|
|
/* The information of architecture attribute. */
|
|
struct riscv_subset_t
|
|
{
|
|
const char *name;
|
|
int major_version;
|
|
int minor_version;
|
|
struct riscv_subset_t *next;
|
|
};
|
|
|
|
typedef struct riscv_subset_t riscv_subset_t;
|
|
|
|
typedef struct
|
|
{
|
|
riscv_subset_t *head;
|
|
riscv_subset_t *tail;
|
|
} riscv_subset_list_t;
|
|
|
|
extern void
|
|
riscv_release_subset_list (riscv_subset_list_t *);
|
|
|
|
extern void
|
|
riscv_add_subset (riscv_subset_list_t *,
|
|
const char *,
|
|
int, int);
|
|
|
|
extern bfd_boolean
|
|
riscv_lookup_subset (const riscv_subset_list_t *,
|
|
const char *,
|
|
riscv_subset_t **);
|
|
|
|
typedef struct
|
|
{
|
|
riscv_subset_list_t *subset_list;
|
|
void (*error_handler) (const char *,
|
|
...) ATTRIBUTE_PRINTF_1;
|
|
unsigned *xlen;
|
|
void (*get_default_version) (const char *,
|
|
int *,
|
|
int *);
|
|
} riscv_parse_subset_t;
|
|
|
|
extern bfd_boolean
|
|
riscv_parse_subset (riscv_parse_subset_t *,
|
|
const char *);
|
|
|
|
extern const char *
|
|
riscv_supported_std_ext (void);
|
|
|
|
extern void
|
|
riscv_release_subset_list (riscv_subset_list_t *);
|
|
|
|
extern char *
|
|
riscv_arch_str (unsigned, const riscv_subset_list_t *);
|
|
|
|
extern size_t
|
|
riscv_estimate_digit (unsigned);
|
|
|
|
/* ISA extension name class. E.g. "zbb" corresponds to RV_ISA_CLASS_Z,
|
|
"xargs" corresponds to RV_ISA_CLASS_X, etc. */
|
|
|
|
typedef enum riscv_isa_ext_class
|
|
{
|
|
RV_ISA_CLASS_S,
|
|
RV_ISA_CLASS_H,
|
|
RV_ISA_CLASS_Z,
|
|
RV_ISA_CLASS_X,
|
|
RV_ISA_CLASS_UNKNOWN
|
|
} riscv_isa_ext_class_t;
|
|
|
|
riscv_isa_ext_class_t
|
|
riscv_get_prefix_class (const char *);
|
|
|
|
extern int
|
|
riscv_get_priv_spec_class (const char *, enum riscv_priv_spec_class *);
|
|
|
|
extern int
|
|
riscv_get_priv_spec_class_from_numbers (unsigned int,
|
|
unsigned int,
|
|
unsigned int,
|
|
enum riscv_priv_spec_class *);
|
|
|
|
extern const char *
|
|
riscv_get_priv_spec_name (enum riscv_priv_spec_class);
|