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semihosting: Implement SYS_ISERROR
author
Keith Packard
<keithp@keithp.com>
Fri, 8 Jan 2021 22:42:56 +0000
(22:42 +0000)
committer
Alex Bennée
<alex.bennee@linaro.org>
Mon, 18 Jan 2021 10:05:06 +0000
(10:05 +0000)
Part of Semihosting for AArch32 and AArch64 Release 2.0
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <
20210107170717
.
2098982
-10-keithp@keithp.com>
Message-Id: <
20210108224256
.2321-21-alex.bennee@linaro.org>
hw/semihosting/arm-compat-semi.c
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diff --git
a/hw/semihosting/arm-compat-semi.c
b/hw/semihosting/arm-compat-semi.c
index
a631904
..
23c6e3e
100644
(file)
--- a/
hw/semihosting/arm-compat-semi.c
+++ b/
hw/semihosting/arm-compat-semi.c
@@
-59,6
+59,7
@@
#define TARGET_SYS_WRITE 0x05
#define TARGET_SYS_READ 0x06
#define TARGET_SYS_READC 0x07
+#define TARGET_SYS_ISERROR 0x08
#define TARGET_SYS_ISTTY 0x09
#define TARGET_SYS_SEEK 0x0a
#define TARGET_SYS_FLEN 0x0c
@@
-967,6
+968,9
@@
target_ulong do_common_semihosting(CPUState *cs)
return guestfd_fns[gf->type].readfn(cs, gf, arg1, len);
case TARGET_SYS_READC:
return qemu_semihosting_console_inc(cs->env_ptr);
+ case TARGET_SYS_ISERROR:
+ GET_ARG(0);
+ return (target_long) arg0 < 0 ? 1 : 0;
case TARGET_SYS_ISTTY:
GET_ARG(0);