semihosting/arm-compat-semi: Avoid using hardcoded /tmp

Use g_get_tmp_dir() to get the directory to use for temporary files.

Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Alex Bennée <[email protected]>
Signed-off-by: Alex Bennée <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Richard Henderson <[email protected]>
Message-Id: <[email protected]>
Message-Id: <[email protected]>
(cherry picked from commit 3878d0c)

Author: lbmeng

semihosting/arm-compat-semi.c

@@ -503,7 +503,8 @@ void do_common_semihosting(CPUState *cs)
         GET_ARG(0);
         GET_ARG(1);
         GET_ARG(2);
-        len = asprintf(&s, "/tmp/qemu-%x%02x", getpid(), (int)arg1 & 0xff);
+        len = asprintf(&s, "%s/qemu-%x%02x", g_get_tmp_dir(),
+                       getpid(), (int)arg1 & 0xff);
         if (len < 0) {
             common_semi_set_ret(cs, -1);
             break;