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semihosting: split console_out into string and char versions

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This is ostensibly to avoid the weirdness of len looking like it might
come from a guest and sometimes being used. While we are at it fix up
the error checking for the arm-linux-user implementation of the API
which got flagged up by Coverity (CID 1401700).

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2019-05-30 15:35:14 +01:00
parent 3ace9be6d2
commit 78e24848f6
4 changed files with 74 additions and 20 deletions
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25
include/hw/semihosting/console.h
View file

@ -10,17 +10,30 @@
#define SEMIHOST_CONSOLE_H
/**
* qemu_semihosting_console_out:
* qemu_semihosting_console_outs:
* @env: CPUArchState
* @s: host address of guest string
* @len: length of string or 0 (string is null terminated)
* @s: host address of null terminated guest string
*
* Send a guest string to the debug console. This may be the remote
* gdb session if a softmmu guest is currently being debugged.
* Send a null terminated guest string to the debug console. This may
* be the remote gdb session if a softmmu guest is currently being
* debugged.
*
* Returns: number of bytes written.
*/
int qemu_semihosting_console_out(CPUArchState *env, target_ulong s, int len);
int qemu_semihosting_console_outs(CPUArchState *env, target_ulong s);
/**
* qemu_semihosting_console_outc:
* @env: CPUArchState
* @s: host address of null terminated guest string
*
* Send single character from guest memory to the debug console. This
* may be the remote gdb session if a softmmu guest is currently being
* debugged.
*
* Returns: nothing
*/
void qemu_semihosting_console_outc(CPUArchState *env, target_ulong c);
/**
* qemu_semihosting_log_out: