gdbstub: Adjust gdb_syscall_complete_cb declaration

Change 'ret' to uint64_t.  This resolves a FIXME in the
m68k and nios2 semihosting that we've lost data.
Change 'err' to int.  There is nothing target-specific
about the width of the errno value.

Reviewed-by: Luc Michel <lmichel@kalray.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

3 files changed, 9 insertions, 12 deletions

diff --git a/semihosting/arm-compat-semi.c b/semihosting/arm-compat-semi.c
index 7ab6afd..1b05059 100644
--- a/semihosting/arm-compat-semi.c
+++ b/semihosting/arm-compat-semi.c
@@ -215,7 +215,7 @@ static inline uint32_t get_swi_errno(CPUState *cs)
 #endif
 }
 
-static void common_semi_cb(CPUState *cs, target_ulong ret, target_ulong err)
+static void common_semi_cb(CPUState *cs, uint64_t ret, int err)
 {
     if (err) {
 #ifdef CONFIG_USER_ONLY
@@ -232,7 +232,7 @@ static void common_semi_cb(CPUState *cs, target_ulong ret, target_ulong err)
  * SYS_READ and SYS_WRITE always return the number of bytes not read/written.
  * There is no error condition, other than returning the original length.
  */
-static void common_semi_rw_cb(CPUState *cs, target_ulong ret, target_ulong err)
+static void common_semi_rw_cb(CPUState *cs, uint64_t ret, int err)
 {
     /* Recover the original length from the third argument. */
     CPUArchState *env G_GNUC_UNUSED = cs->env_ptr;
@@ -251,8 +251,7 @@ static void common_semi_rw_cb(CPUState *cs, target_ulong ret, target_ulong err)
  * Convert from Posix ret+errno to Arm SYS_ISTTY return values.
  * With gdbstub, err is only ever set for protocol errors to EIO.
  */
-static void common_semi_istty_cb(CPUState *cs, target_ulong ret,
-                                 target_ulong err)
+static void common_semi_istty_cb(CPUState *cs, uint64_t ret, int err)
 {
     if (err) {
         ret = (err == ENOTTY ? 0 : -1);
@@ -263,8 +262,7 @@ static void common_semi_istty_cb(CPUState *cs, target_ulong ret,
 /*
  * SYS_SEEK returns 0 on success, not the resulting offset.
  */
-static void common_semi_seek_cb(CPUState *cs, target_ulong ret,
-                                target_ulong err)
+static void common_semi_seek_cb(CPUState *cs, uint64_t ret, int err)
 {
     if (!err) {
         ret = 0;
@@ -285,7 +283,7 @@ static target_ulong common_semi_flen_buf(CPUState *cs)
 }
 
 static void
-common_semi_flen_fstat_cb(CPUState *cs, target_ulong ret, target_ulong err)
+common_semi_flen_fstat_cb(CPUState *cs, uint64_t ret, int err)
 {
     if (!err) {
         /* The size is always stored in big-endian order, extract the value. */
diff --git a/semihosting/console.c b/semihosting/console.c
index ef6958d..4e49202 100644
--- a/semihosting/console.c
+++ b/semihosting/console.c
@@ -64,11 +64,10 @@ static GString *copy_user_string(CPUArchState *env, target_ulong addr)
     return s;
 }
 
-static void semihosting_cb(CPUState *cs, target_ulong ret, target_ulong err)
+static void semihosting_cb(CPUState *cs, uint64_t ret, int err)
 {
-    if (ret == (target_ulong) -1) {
-        qemu_log("%s: gdb console output failed ("TARGET_FMT_ld")",
-                 __func__, err);
+    if (err) {
+        qemu_log("%s: gdb console output failed (%d)\n", __func__, err);
     }
 }
 
diff --git a/semihosting/syscalls.c b/semihosting/syscalls.c
index db1e9f6..13a9bde 100644
--- a/semihosting/syscalls.c
+++ b/semihosting/syscalls.c
@@ -115,7 +115,7 @@ static int copy_stat_to_user(CPUState *cs, target_ulong addr,
 
 static gdb_syscall_complete_cb gdb_open_complete;
 
-static void gdb_open_cb(CPUState *cs, target_ulong ret, target_ulong err)
+static void gdb_open_cb(CPUState *cs, uint64_t ret, int err)
 {
     if (!err) {
         int guestfd = alloc_guestfd();