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bsd-user: Define RISC-V system call structures and constants

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Introduced definitions for the RISC-V system call interface, including
the 'target_pt_regs' structure that outlines the register storage
layout during a system call.
Added constants for hardware machine identifiers.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Ajeet Singh <itachis@FreeBSD.org>
Co-authored-by: Jessica Clarke <jrtc27@jrtc27.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240916155119.14610-12-itachis@FreeBSD.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Mark Corbin 2024-09-17 01:51:13 +10:00 committed by Alistair Francis
parent 9f57fb97b6
commit 9cc1a9cd4f
1 changed files with 38 additions and 0 deletions
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38
bsd-user/riscv/target_syscall.h Normal file
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/*
* RISC-V system call definitions
*
* Copyright (c) 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/>.
*/
#ifndef BSD_USER_RISCV_TARGET_SYSCALL_H
#define BSD_USER_RISCV_TARGET_SYSCALL_H
/*
* struct target_pt_regs defines the way the registers are stored on the stack
* during a system call.
*/
struct target_pt_regs {
abi_ulong regs[32];
abi_ulong sepc;
};
#define UNAME_MACHINE "riscv64"
#define TARGET_HW_MACHINE "riscv"
#define TARGET_HW_MACHINE_ARCH UNAME_MACHINE
#endif /* BSD_USER_RISCV_TARGET_SYSCALL_H */