cd66f20f61
Will replace qemu_semihosting_console_{outs,outc},
but we need more plumbing first.
Reviewed-by: Luc Michel <lmichel@kalray.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/*
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* Semihosting Console
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*
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* Copyright (c) 2019 Linaro Ltd
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef SEMIHOST_CONSOLE_H
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#define SEMIHOST_CONSOLE_H
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#include "cpu.h"
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/**
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* qemu_semihosting_console_outs:
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* @env: CPUArchState
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* @s: host address of null terminated guest string
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*
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* Send a null terminated guest string to the debug console. This may
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* be the remote gdb session if a softmmu guest is currently being
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* debugged.
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*
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* Returns: number of bytes written.
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*/
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int qemu_semihosting_console_outs(CPUArchState *env, target_ulong s);
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/**
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* qemu_semihosting_console_outc:
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* @env: CPUArchState
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* @s: host address of null terminated guest string
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*
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* Send single character from guest memory to the debug console. This
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* may be the remote gdb session if a softmmu guest is currently being
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* debugged.
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*
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* Returns: nothing
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*/
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void qemu_semihosting_console_outc(CPUArchState *env, target_ulong c);
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/**
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* qemu_semihosting_console_read:
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* @cs: CPUState
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* @buf: host buffer
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* @len: buffer size
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*
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* Receive at least one character from debug console. As this call may
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* block if no data is available we suspend the CPU and will re-execute the
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* instruction when data is there. Therefore two conditions must be met:
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*
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* - CPUState is synchronized before calling this function
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* - pc is only updated once the character is successfully returned
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*
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* Returns: number of characters read, OR cpu_loop_exit!
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*/
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int qemu_semihosting_console_read(CPUState *cs, void *buf, int len);
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/**
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* qemu_semihosting_console_write:
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* @buf: host buffer
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* @len: buffer size
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*
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* Write len bytes from buf to the debug console.
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*
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* Returns: number of bytes written -- this should only ever be short
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* on some sort of i/o error.
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*/
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int qemu_semihosting_console_write(void *buf, int len);
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/**
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* qemu_semihosting_log_out:
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* @s: pointer to string
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* @len: length of string
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*
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* Send a string to the debug output. Unlike console_out these strings
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* can't be sent to a remote gdb instance as they don't exist in guest
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* memory.
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*
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* Returns: number of bytes written
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*/
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int qemu_semihosting_log_out(const char *s, int len);
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#endif /* SEMIHOST_CONSOLE_H */
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