From 9cc1a9cd4fe3f1f5307fb470ee11745566bbd857 Mon Sep 17 00:00:00 2001 From: Mark Corbin Date: Tue, 17 Sep 2024 01:51:13 +1000 Subject: [PATCH] bsd-user: Define RISC-V system call structures and constants 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 Signed-off-by: Ajeet Singh Co-authored-by: Jessica Clarke Reviewed-by: Richard Henderson Message-ID: <20240916155119.14610-12-itachis@FreeBSD.org> Signed-off-by: Alistair Francis --- bsd-user/riscv/target_syscall.h | 38 +++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 bsd-user/riscv/target_syscall.h diff --git a/bsd-user/riscv/target_syscall.h b/bsd-user/riscv/target_syscall.h new file mode 100644 index 0000000000..e7e5231309 --- /dev/null +++ b/bsd-user/riscv/target_syscall.h @@ -0,0 +1,38 @@ +/* + * 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 . + */ + +#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 */