Yaya48
cf256aa081
Upstream: https://gitlab.com/qemu-project/qemu.git Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/*
|
|
* Semihosting Console
|
|
*
|
|
* Copyright (c) 2019 Linaro Ltd
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#ifndef SEMIHOST_CONSOLE_H
|
|
#define SEMIHOST_CONSOLE_H
|
|
|
|
/**
|
|
* qemu_semihosting_console_read:
|
|
* @cs: CPUState
|
|
* @buf: host buffer
|
|
* @len: buffer size
|
|
*
|
|
* Receive at least one character from debug console. As this call may
|
|
* block if no data is available we suspend the CPU and will re-execute the
|
|
* instruction when data is there. Therefore two conditions must be met:
|
|
*
|
|
* - CPUState is synchronized before calling this function
|
|
* - pc is only updated once the character is successfully returned
|
|
*
|
|
* Returns: number of characters read, OR cpu_loop_exit!
|
|
*/
|
|
int qemu_semihosting_console_read(CPUState *cs, void *buf, int len);
|
|
|
|
/**
|
|
* qemu_semihosting_console_write:
|
|
* @buf: host buffer
|
|
* @len: buffer size
|
|
*
|
|
* Write len bytes from buf to the debug console.
|
|
*
|
|
* Returns: number of bytes written -- this should only ever be short
|
|
* on some sort of i/o error.
|
|
*/
|
|
int qemu_semihosting_console_write(void *buf, int len);
|
|
|
|
/*
|
|
* qemu_semihosting_console_block_until_ready:
|
|
* @cs: CPUState
|
|
*
|
|
* If no data is available we suspend the CPU and will re-execute the
|
|
* instruction when data is available.
|
|
*/
|
|
void qemu_semihosting_console_block_until_ready(CPUState *cs);
|
|
|
|
/**
|
|
* qemu_semihosting_console_ready:
|
|
*
|
|
* Return true if characters are available for read; does not block.
|
|
*/
|
|
bool qemu_semihosting_console_ready(void);
|
|
|
|
#endif /* SEMIHOST_CONSOLE_H */
|