qemu/include/semihosting/softmmu-uaccess.h
Richard Henderson 5f9ca6f3c5 semihosting: Add target_strlen for softmmu-uaccess.h
Mirror the interface of the user-only function of the same name.
Use probe_access_flags for the common case of ram, and
cpu_memory_rw_debug for the uncommon case of mmio.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v3: Use probe_access_flags (pmm)
2022-06-28 04:35:06 +05:30

60 lines
2.5 KiB
C

/*
* Helper routines to provide target memory access for semihosting
* syscalls in system emulation mode.
*
* Copyright (c) 2007 CodeSourcery.
*
* This code is licensed under the GPL
*/
#ifndef SEMIHOSTING_SOFTMMU_UACCESS_H
#define SEMIHOSTING_SOFTMMU_UACCESS_H
#include "cpu.h"
#define get_user_u64(val, addr) \
({ uint64_t val_ = 0; \
int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr), \
&val_, sizeof(val_), 0); \
(val) = tswap64(val_); ret_; })
#define get_user_u32(val, addr) \
({ uint32_t val_ = 0; \
int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr), \
&val_, sizeof(val_), 0); \
(val) = tswap32(val_); ret_; })
#define get_user_u8(val, addr) \
({ uint8_t val_ = 0; \
int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr), \
&val_, sizeof(val_), 0); \
(val) = val_; ret_; })
#define get_user_ual(arg, p) get_user_u32(arg, p)
#define put_user_u64(val, addr) \
({ uint64_t val_ = tswap64(val); \
cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); })
#define put_user_u32(val, addr) \
({ uint32_t val_ = tswap32(val); \
cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); })
#define put_user_ual(arg, p) put_user_u32(arg, p)
void *softmmu_lock_user(CPUArchState *env, target_ulong addr,
target_ulong len, bool copy);
#define lock_user(type, p, len, copy) softmmu_lock_user(env, p, len, copy)
char *softmmu_lock_user_string(CPUArchState *env, target_ulong addr);
#define lock_user_string(p) softmmu_lock_user_string(env, p)
void softmmu_unlock_user(CPUArchState *env, void *p,
target_ulong addr, target_ulong len);
#define unlock_user(s, args, len) softmmu_unlock_user(env, s, args, len)
ssize_t softmmu_strlen_user(CPUArchState *env, target_ulong addr);
#define target_strlen(p) softmmu_strlen_user(env, p)
#endif /* SEMIHOSTING_SOFTMMU_UACCESS_H */