diff options
| author | Alex Bennée <alex.bennee@linaro.org> | 2019-05-14 11:07:15 +0100 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2019-05-28 10:28:50 +0100 |
| commit | 0dc077212f6c1897e5bf39d1ab8e6bf23395ac4c (patch) | |
| tree | c376e4e2dee8dd1cbb6b305942a245d4994f49a3 /linux-user | |
| parent | 4cb28db99be2ca4a3f143e8c4c4ac954af1cc4f4 (diff) | |
target/arm: use the common interface for WRITE0/WRITEC in arm-semi
Now we have a common semihosting console interface use that for our
string output. However ARM is currently unique in also supporting
semihosting for linux-user so we need to replicate the API in
linux-user. If other architectures gain this support we can move the
file later.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/Makefile.objs | 2 | ||||
| -rw-r--r-- | linux-user/arm/semihost.c | 24 |
2 files changed, 26 insertions, 0 deletions
diff --git a/linux-user/Makefile.objs b/linux-user/Makefile.objs index 769b8d8336..285c5dfa17 100644 --- a/linux-user/Makefile.objs +++ b/linux-user/Makefile.objs @@ -6,4 +6,6 @@ obj-y = main.o syscall.o strace.o mmap.o signal.o \ obj-$(TARGET_HAS_BFLT) += flatload.o obj-$(TARGET_I386) += vm86.o obj-$(TARGET_ARM) += arm/nwfpe/ +obj-$(TARGET_ARM) += arm/semihost.o +obj-$(TARGET_AARCH64) += arm/semihost.o obj-$(TARGET_M68K) += m68k-sim.o diff --git a/linux-user/arm/semihost.c b/linux-user/arm/semihost.c new file mode 100644 index 0000000000..9554102a85 --- /dev/null +++ b/linux-user/arm/semihost.c @@ -0,0 +1,24 @@ +/* + * ARM Semihosting Console Support + * + * Copyright (c) 2019 Linaro Ltd + * + * Currently ARM is unique in having support for semihosting support + * in linux-user. So for now we implement the common console API but + * just for arm linux-user. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "hw/semihosting/console.h" +#include "qemu.h" + +int qemu_semihosting_console_out(CPUArchState *env, target_ulong addr, int len) +{ + void *s = lock_user_string(addr); + len = write(STDERR_FILENO, s, len ? len : strlen(s)); + unlock_user(s, addr, 0); + return len; +} |