+++ /dev/null
-/* Copyright 2019 SiFive, Inc */
-/* SPDX-License-Identifier: Apache-2.0 */
-
-#ifndef METAL__PRIVILEGE_H
-#define METAL__PRIVILEGE_H
-
-/*!
- * @file metal/privilege.h
- *
- * @brief API for manipulating the privilege mode of a RISC-V system
- *
- * Additional information about privilege modes on RISC-V systems can be found
- * by reading the RISC-V Privileged Architecture Specification v1.10.
- */
-
-#include <stdint.h>
-
-enum metal_privilege_mode {
- METAL_PRIVILEGE_USER = 0,
- METAL_PRIVILEGE_SUPERVISOR = 1,
- METAL_PRIVELEGE_MACHINE = 3,
-};
-
-#if __riscv_xlen == 32
-typedef uint32_t metal_xreg_t;
-#elif __riscv_xlen == 64
-typedef uint64_t metal_xreg_t;
-#endif
-
-#if __riscv_flen == 32
-typedef uint32_t metal_freg_t;
-#elif __riscv_flen == 64
-typedef uint64_t metal_freg_t;
-#endif
-
-struct metal_register_file {
- metal_xreg_t ra;
- metal_xreg_t sp;
- metal_xreg_t gp;
- metal_xreg_t tp;
-
- metal_xreg_t t0;
- metal_xreg_t t1;
- metal_xreg_t t2;
-
- metal_xreg_t s0;
- metal_xreg_t s1;
-
- metal_xreg_t a0;
- metal_xreg_t a1;
- metal_xreg_t a2;
- metal_xreg_t a3;
- metal_xreg_t a4;
- metal_xreg_t a5;
-#ifndef __riscv_32e
- metal_xreg_t a6;
- metal_xreg_t a7;
-
- metal_xreg_t s2;
- metal_xreg_t s3;
- metal_xreg_t s4;
- metal_xreg_t s5;
- metal_xreg_t s6;
- metal_xreg_t s7;
- metal_xreg_t s8;
- metal_xreg_t s9;
- metal_xreg_t s10;
- metal_xreg_t s11;
-
- metal_xreg_t t3;
- metal_xreg_t t4;
- metal_xreg_t t5;
- metal_xreg_t t6;
-#endif /* __riscv_32e */
-
-#ifdef __riscv_flen
- metal_freg_t ft0;
- metal_freg_t ft1;
- metal_freg_t ft2;
- metal_freg_t ft3;
- metal_freg_t ft4;
- metal_freg_t ft5;
- metal_freg_t ft6;
- metal_freg_t ft7;
-
- metal_freg_t fs0;
- metal_freg_t fs1;
-
- metal_freg_t fa0;
- metal_freg_t fa1;
- metal_freg_t fa2;
- metal_freg_t fa3;
- metal_freg_t fa4;
- metal_freg_t fa5;
- metal_freg_t fa6;
- metal_freg_t fa7;
-
- metal_freg_t fs2;
- metal_freg_t fs3;
- metal_freg_t fs4;
- metal_freg_t fs5;
- metal_freg_t fs6;
- metal_freg_t fs7;
- metal_freg_t fs8;
- metal_freg_t fs9;
- metal_freg_t fs10;
- metal_freg_t fs11;
-
- metal_freg_t ft8;
- metal_freg_t ft9;
- metal_freg_t ft10;
- metal_freg_t ft11;
-#endif /* __riscv_flen */
-};
-
-typedef void (*metal_privilege_entry_point_t)();
-
-void metal_privilege_drop_to_mode(enum metal_privilege_mode mode,
- struct metal_register_file regfile,
- metal_privilege_entry_point_t entry_point);
-
-#endif