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 */ 25 int 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 */ 38 void 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 */ 54 target_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 */ 67 int qemu_semihosting_log_out(const char *s, int len); 68 69 #endif /* SEMIHOST_CONSOLE_H */ 70