jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
1/*
2 * Semihosting Console
3 *
4 * Copyright (c) 2019 Linaro Ltd
5 *
6 * SPDX-License-Identifier: GPL-2.0-or-later
7 */
8
9#ifndef SEMIHOST_CONSOLE_H
10#define SEMIHOST_CONSOLE_H
11
12#include "cpu.h"
13
14/**
15 * qemu_semihosting_console_outs:
16 * @env: CPUArchState
17 * @s: host address of null terminated guest string
18 *
19 * Send a null terminated guest string to the debug console. This may
20 * be the remote gdb session if a softmmu guest is currently being
21 * debugged.
22 *
23 * Returns: number of bytes written.
24 */
25int qemu_semihosting_console_outs(CPUArchState *env, target_ulong s);
26
27/**
28 * qemu_semihosting_console_outc:
29 * @env: CPUArchState
30 * @s: host address of null terminated guest string
31 *
32 * Send single character from guest memory to the debug console. This
33 * may be the remote gdb session if a softmmu guest is currently being
34 * debugged.
35 *
36 * Returns: nothing
37 */
38void qemu_semihosting_console_outc(CPUArchState *env, target_ulong c);
39
40/**
41 * qemu_semihosting_console_inc:
42 * @env: CPUArchState
43 *
44 * Receive single character from debug console. This may be the remote
45 * gdb session if a softmmu guest is currently being debugged. As this
46 * call may block if no data is available we suspend the CPU and will
47 * re-execute the instruction when data is there. Therefore two
48 * conditions must be met:
49 * - CPUState is synchronized before calling this function
50 * - pc is only updated once the character is successfully returned
51 *
52 * Returns: character read OR cpu_loop_exit!
53 */
54target_ulong qemu_semihosting_console_inc(CPUArchState *env);
55
56/**
57 * qemu_semihosting_log_out:
58 * @s: pointer to string
59 * @len: length of string
60 *
61 * Send a string to the debug output. Unlike console_out these strings
62 * can't be sent to a remote gdb instance as they don't exist in guest
63 * memory.
64 *
65 * Returns: number of bytes written
66 */
67int qemu_semihosting_log_out(const char *s, int len);
68
69#endif /* SEMIHOST_CONSOLE_H */