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bsd-user: Implement RISC-V TLS register setup

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Included the prototype for the 'target_cpu_set_tls' function in the
'target_arch.h' header file. This function is responsible for setting
the Thread Local Storage (TLS) register for RISC-V architecture.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Ajeet Singh <itachis@FreeBSD.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240916155119.14610-5-itachis@FreeBSD.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Mark Corbin 2024-09-17 01:51:06 +10:00 committed by Alistair Francis
parent 5341bf6afe
commit 83726b7798
2 changed files with 56 additions and 0 deletions
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27
bsd-user/riscv/target_arch.h Normal file
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/*
* RISC-V specific prototypes
*
* Copyright (c) 2019 Mark Corbin <mark.corbin@embecsom.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TARGET_ARCH_H
#define TARGET_ARCH_H
#include "qemu.h"
void target_cpu_set_tls(CPURISCVState *env, target_ulong newtls);
#endif /* TARGET_ARCH_H */

29
bsd-user/riscv/target_arch_cpu.c Normal file
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/*
* RISC-V CPU related code
*
* Copyright (c) 2019 Mark Corbin
*
* 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 2 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/>.
*/
#include "qemu/osdep.h"
#include "target_arch.h"
#define TP_OFFSET 16
/* Compare with cpu_set_user_tls() in riscv/riscv/vm_machdep.c */
void target_cpu_set_tls(CPURISCVState *env, target_ulong newtls)
{
env->gpr[xTP] = newtls + TP_OFFSET;
}