1 /* 2 * Helper routines to provide target memory access for semihosting 3 * syscalls in system emulation mode. 4 * 5 * Copyright (c) 2007 CodeSourcery. 6 * 7 * This code is licensed under the GPL 8 */ 9 10 #ifndef SEMIHOSTING_UACCESS_H 11 #define SEMIHOSTING_UACCESS_H 12 13 #ifdef CONFIG_USER_ONLY 14 #error Cannot include semihosting/uaccess.h from user emulation 15 #endif 16 17 #include "cpu.h" 18 19 #define get_user_u64(val, addr) \ 20 ({ uint64_t val_ = 0; \ 21 int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr), \ 22 &val_, sizeof(val_), 0); \ 23 (val) = tswap64(val_); ret_; }) 24 25 #define get_user_u32(val, addr) \ 26 ({ uint32_t val_ = 0; \ 27 int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr), \ 28 &val_, sizeof(val_), 0); \ 29 (val) = tswap32(val_); ret_; }) 30 31 #define get_user_u8(val, addr) \ 32 ({ uint8_t val_ = 0; \ 33 int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr), \ 34 &val_, sizeof(val_), 0); \ 35 (val) = val_; ret_; }) 36 37 #define get_user_ual(arg, p) get_user_u32(arg, p) 38 39 #define put_user_u64(val, addr) \ 40 ({ uint64_t val_ = tswap64(val); \ 41 cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); }) 42 43 #define put_user_u32(val, addr) \ 44 ({ uint32_t val_ = tswap32(val); \ 45 cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); }) 46 47 #define put_user_ual(arg, p) put_user_u32(arg, p) 48 49 void *uaccess_lock_user(CPUArchState *env, target_ulong addr, 50 target_ulong len, bool copy); 51 #define lock_user(type, p, len, copy) uaccess_lock_user(env, p, len, copy) 52 53 char *uaccess_lock_user_string(CPUArchState *env, target_ulong addr); 54 #define lock_user_string(p) uaccess_lock_user_string(env, p) 55 56 void uaccess_unlock_user(CPUArchState *env, void *p, 57 target_ulong addr, target_ulong len); 58 #define unlock_user(s, args, len) uaccess_unlock_user(env, s, args, len) 59 60 ssize_t uaccess_strlen_user(CPUArchState *env, target_ulong addr); 61 #define target_strlen(p) uaccess_strlen_user(env, p) 62 63 #endif /* SEMIHOSTING_SOFTMMU_UACCESS_H */ 64