From 4487270ea434782f25f790892c5f7d03b7cbe243 Mon Sep 17 00:00:00 2001
From: Jan Matyas <matyas@codasip.com>
Date: Fri, 4 Jun 2021 11:41:36 +0200
Subject: [PATCH] target/semihosting: Capture errno in SEMIHOSTING_SYS_ISTTY

Capture the value of "errno" in semihosting isatty() call,
as is done in other syscalls.

Change-Id: I41b72175635f06c000536f583e3efa30fb57379e
Signed-off-by: Jan Matyas <matyas@codasip.com>
Reviewed-on: http://openocd.zylin.com/6292
Tested-by: jenkins
Reviewed-by: Tim Newsome <tim@sifive.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
---
 src/target/semihosting_common.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/target/semihosting_common.c b/src/target/semihosting_common.c
index 61a69d1bd..bfb1ecaa7 100644
--- a/src/target/semihosting_common.c
+++ b/src/target/semihosting_common.c
@@ -615,6 +615,7 @@ int semihosting_common(struct target *target)
 					return retval;
 				int fd = semihosting_get_field(target, 0, fields);
 				semihosting->result = isatty(fd);
+				semihosting->sys_errno = errno;
 				LOG_DEBUG("isatty(%d)=%d", fd, (int)semihosting->result);
 			}
 			break;