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 "exec/cpu-common.h" 18 #include "exec/cpu-defs.h" 19 #include "exec/tswap.h" 20 #include "exec/page-protection.h" 21 22 #define get_user_u64(val, addr) \ 23 ({ uint64_t val_ = 0; \ 24 int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr), \ 25 &val_, sizeof(val_), 0); \ 26 (val) = tswap64(val_); ret_; }) 27 28 #define get_user_u32(val, addr) \ 29 ({ uint32_t val_ = 0; \ 30 int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr), \ 31 &val_, sizeof(val_), 0); \ 32 (val) = tswap32(val_); ret_; }) 33 34 #define get_user_u8(val, addr) \ 35 ({ uint8_t val_ = 0; \ 36 int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr), \ 37 &val_, sizeof(val_), 0); \ 38 (val) = val_; ret_; }) 39 40 #define get_user_ual(arg, p) get_user_u32(arg, p) 41 42 #define put_user_u64(val, addr) \ 43 ({ uint64_t val_ = tswap64(val); \ 44 cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); }) 45 46 #define put_user_u32(val, addr) \ 47 ({ uint32_t val_ = tswap32(val); \ 48 cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); }) 49 50 #define put_user_ual(arg, p) put_user_u32(arg, p) 51 52 void *uaccess_lock_user(CPUArchState *env, target_ulong addr, 53 target_ulong len, bool copy); 54 #define lock_user(type, p, len, copy) uaccess_lock_user(env, p, len, copy) 55 56 char *uaccess_lock_user_string(CPUArchState *env, target_ulong addr); 57 #define lock_user_string(p) uaccess_lock_user_string(env, p) 58 59 void uaccess_unlock_user(CPUArchState *env, void *p, 60 target_ulong addr, target_ulong len); 61 #define unlock_user(s, args, len) uaccess_unlock_user(env, s, args, len) 62 63 ssize_t uaccess_strlen_user(CPUArchState *env, target_ulong addr); 64 #define target_strlen(p) uaccess_strlen_user(env, p) 65 66 #endif /* SEMIHOSTING_SOFTMMU_UACCESS_H */ 67