mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/* GNU/Linux/RISC-V native target description support for GDB.
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Copyright (C) 2020-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "gdbsupport/common-defs.h"
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#include "gdb_proc_service.h"
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#include "arch/riscv.h"
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#include "elf/common.h"
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#include "nat/gdb_ptrace.h"
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#include "nat/riscv-linux-tdesc.h"
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#include <sys/uio.h>
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/* Work around glibc header breakage causing ELF_NFPREG not to be usable. */
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#ifndef NFPREG
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# define NFPREG 33
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#endif
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/* See nat/riscv-linux-tdesc.h. */
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struct riscv_gdbarch_features
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riscv_linux_read_features (int tid)
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{
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struct riscv_gdbarch_features features;
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elf_fpregset_t regs;
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int flen;
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/* Figuring out xlen is easy. */
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features.xlen = sizeof (elf_greg_t);
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/* Start with no f-registers. */
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features.flen = 0;
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/* How much worth of f-registers can we fetch if any? */
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for (flen = sizeof (regs.__f.__f[0]); ; flen *= 2)
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{
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size_t regset_size;
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struct iovec iov;
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/* Regsets have a uniform slot size, so we count FSCR like
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an FP data register. */
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regset_size = ELF_NFPREG * flen;
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if (regset_size > sizeof (regs))
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break;
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iov.iov_base = ®s;
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iov.iov_len = regset_size;
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if (ptrace (PTRACE_GETREGSET, tid, NT_FPREGSET,
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(PTRACE_TYPE_ARG3) &iov) == -1)
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{
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switch (errno)
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{
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case EINVAL:
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continue;
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case EIO:
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break;
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default:
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perror_with_name (_("Couldn't get registers"));
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break;
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}
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}
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else
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features.flen = flen;
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break;
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}
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return features;
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}
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