include/semihosting/softmmu-uaccess.h

   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_SOFTMMU_UACCESS_H
  11 #define SEMIHOSTING_SOFTMMU_UACCESS_H
  12
  13 #include "cpu.h"
  14
  15 #define get_user_u64(val, addr)                                         \
  16     ({ uint64_t val_ = 0;                                               \
  17        int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr),             \
  18                                       &val_, sizeof(val_), 0);          \
  19        (val) = tswap64(val_); ret_; })
  20
  21 #define get_user_u32(val, addr)                                         \
  22     ({ uint32_t val_ = 0;                                               \
  23        int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr),             \
  24                                       &val_, sizeof(val_), 0);          \
  25        (val) = tswap32(val_); ret_; })
  26
  27 #define get_user_u8(val, addr)                                          \
  28     ({ uint8_t val_ = 0;                                                \
  29        int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr),             \
  30                                       &val_, sizeof(val_), 0);          \
  31        (val) = val_; ret_; })
  32
  33 #define get_user_ual(arg, p) get_user_u32(arg, p)
  34
  35 #define put_user_u64(val, addr)                                         \
  36     ({ uint64_t val_ = tswap64(val);                                    \
  37        cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); })
  38
  39 #define put_user_u32(val, addr)                                         \
  40     ({ uint32_t val_ = tswap32(val);                                    \
  41        cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); })
  42
  43 #define put_user_ual(arg, p) put_user_u32(arg, p)
  44
  45 void *softmmu_lock_user(CPUArchState *env, target_ulong addr,
  46                         target_ulong len, bool copy);
  47 #define lock_user(type, p, len, copy) softmmu_lock_user(env, p, len, copy)
  48
  49 char *softmmu_lock_user_string(CPUArchState *env, target_ulong addr);
  50 #define lock_user_string(p) softmmu_lock_user_string(env, p)
  51
  52 void softmmu_unlock_user(CPUArchState *env, void *p,
  53                          target_ulong addr, target_ulong len);
  54 #define unlock_user(s, args, len) softmmu_unlock_user(env, s, args, len)
  55
  56 ssize_t softmmu_strlen_user(CPUArchState *env, target_ulong addr);
  57 #define target_strlen(p) softmmu_strlen_user(env, p)
  58
  59 #endif /* SEMIHOSTING_SOFTMMU_UACCESS_H */