On 1/6/2023 10:48, Bin Meng wrote:
On Fri, Jan 6, 2023 at 3:39 PM Philippe Mathieu-Daudé <phi...@linaro.org> wrote:
On 5/1/23 22:19, Evgeny Iakovlev wrote:
Windows open(2) implementations opens files in text mode by default and
needs a Windows-only O_BINARY flag to open files as binary. Qemu already
s/Qemu/QEMU/

knows about that flag in osdep.h, so we can just add it to the
host_flags for better compatibility when running qemu on Windows.
s/qemu/QEMU/

Signed-off-by: Evgeny Iakovlev <eiakov...@linux.microsoft.com>
---
   semihosting/syscalls.c | 2 ++
   1 file changed, 2 insertions(+)

diff --git a/semihosting/syscalls.c b/semihosting/syscalls.c
index 508a0ad88c..00f77507e5 100644
--- a/semihosting/syscalls.c
+++ b/semihosting/syscalls.c
@@ -278,6 +278,8 @@ static void host_open(CPUState *cs, gdb_syscall_complete_cb 
complete,
           host_flags |= O_EXCL;
       }

+    host_flags |= O_BINARY;
+
       ret = open(p, host_flags, mode);
       if (ret < 0) {
           complete(cs, -1, errno);
Alternatively with more churn:

-- >8 --
diff --git a/semihosting/syscalls.c b/semihosting/syscalls.c
index 508a0ad88c..b621d78c2d 100644
--- a/semihosting/syscalls.c
+++ b/semihosting/syscalls.c
@@ -253,7 +253,7 @@ static void host_open(CPUState *cs,
gdb_syscall_complete_cb complete,
   {
       CPUArchState *env G_GNUC_UNUSED = cs->env_ptr;
       char *p;
-    int ret, host_flags;
+    int ret, host_flags = O_BINARY;

       ret = validate_lock_user_string(&p, cs, fname, fname_len);
       if (ret < 0) {
@@ -262,11 +262,11 @@ static void host_open(CPUState *cs,
gdb_syscall_complete_cb complete,
       }

       if (gdb_flags & GDB_O_WRONLY) {
-        host_flags = O_WRONLY;
+        host_flags |= O_WRONLY;
       } else if (gdb_flags & GDB_O_RDWR) {
-        host_flags = O_RDWR;
+        host_flags |= O_RDWR;
       } else {
-        host_flags = O_RDONLY;
+        host_flags |= O_RDONLY;
       }
       if (gdb_flags & GDB_O_CREAT) {
           host_flags |= O_CREAT;
---

Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>

With Philippe's comments addressed,
Reviewed-by: Bin Meng <bmeng...@gmail.com>

Done, sent out a v2, thanks!



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