| 1 | /* |
| 2 | * x86_64 sysarch() syscall emulation |
| 3 | * |
| 4 | * Copyright (c) 2013 Stacey D. Son |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 7 | */ |
| 8 | #ifndef TARGET_ARCH_SYSARCH_H |
| 9 | #define TARGET_ARCH_SYSARCH_H |
| 10 | |
| 11 | #include "target_syscall.h" |
| 12 | |
| 13 | static inline abi_long do_freebsd_arch_sysarch(CPUX86State *env, int op, |
| 14 | abi_ulong parms) |
| 15 | { |
| 16 | abi_long ret = 0; |
| 17 | abi_ulong val; |
| 18 | int idx; |
| 19 | |
| 20 | switch (op) { |
| 21 | case TARGET_FREEBSD_AMD64_SET_GSBASE: |
| 22 | case TARGET_FREEBSD_AMD64_SET_FSBASE: |
| 23 | if (op == TARGET_FREEBSD_AMD64_SET_GSBASE) { |
| 24 | idx = R_GS; |
| 25 | } else { |
| 26 | idx = R_FS; |
| 27 | } |
| 28 | if (get_user(val, parms, abi_ulong)) { |
| 29 | return -TARGET_EFAULT; |
| 30 | } |
| 31 | cpu_x86_load_seg(env, idx, 0); |
| 32 | env->segs[idx].base = val; |
| 33 | break; |
| 34 | |
| 35 | case TARGET_FREEBSD_AMD64_GET_GSBASE: |
| 36 | case TARGET_FREEBSD_AMD64_GET_FSBASE: |
| 37 | if (op == TARGET_FREEBSD_AMD64_GET_GSBASE) { |
| 38 | idx = R_GS; |
| 39 | } else { |
| 40 | idx = R_FS; |
| 41 | } |
| 42 | val = env->segs[idx].base; |
| 43 | if (put_user(val, parms, abi_ulong)) { |
| 44 | return -TARGET_EFAULT; |
| 45 | } |
| 46 | break; |
| 47 | |
| 48 | /* XXX handle the others... */ |
| 49 | default: |
| 50 | ret = -TARGET_EINVAL; |
| 51 | break; |
| 52 | } |
| 53 | return ret; |
| 54 | } |
| 55 | |
| 56 | static inline void do_freebsd_arch_print_sysarch( |
| 57 | const struct syscallname *name, abi_long arg1, abi_long arg2, |
| 58 | abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6) |
| 59 | { |
| 60 | |
| 61 | gemu_log("%s(%d, " TARGET_ABI_FMT_lx ", " TARGET_ABI_FMT_lx ", " |
| 62 | TARGET_ABI_FMT_lx ")", name->name, (int)arg1, arg2, arg3, arg4); |
| 63 | } |
| 64 | |
| 65 | #endif /* TARGET_ARCH_SYSARCH_H */ |