linux-user/strace: Let print_sockaddr() have a 'last' argument

If the format is not the syscall last argument, a comma is append.
Signed-off-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Message-Id: <20191021114857.20538-9-f4bug@amsat.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

linux-user/strace.c

@@ -67,7 +67,7 @@ UNUSED static void print_timeval(abi_ulong, int);
 UNUSED static void print_timezone(abi_ulong, int);
 UNUSED static void print_number(abi_long, int);
 UNUSED static void print_signal(abi_ulong, int);
-UNUSED static void print_sockaddr(abi_ulong addr, abi_long addrlen);
+UNUSED static void print_sockaddr(abi_ulong, abi_long, int);
 UNUSED static void print_socket_domain(int domain);
 UNUSED static void print_socket_type(int type);
 UNUSED static void print_socket_protocol(int domain, int type, int protocol);
@@ -336,7 +336,7 @@ static void print_siginfo(const target_siginfo_t *tinfo)
 }
 
 static void
-print_sockaddr(abi_ulong addr, abi_long addrlen)
+print_sockaddr(abi_ulong addr, abi_long addrlen, int last)
 {
     struct target_sockaddr *sa;
     int i;
@@ -418,7 +418,7 @@ print_sockaddr(abi_ulong addr, abi_long addrlen)
     } else {
         print_raw_param("0x"TARGET_ABI_FMT_lx, addr, 0);
     }
-    gemu_log(", "TARGET_ABI_FMT_ld, addrlen);
+    gemu_log(", "TARGET_ABI_FMT_ld"%s", addrlen, get_comma(last));
 }
 
 static void
@@ -1751,7 +1751,7 @@ static void do_print_sockaddr(const char *name, abi_long arg1)
 
     gemu_log("%s(", name);
     print_sockfd(sockfd, 0);
-    print_sockaddr(addr, addrlen);
+    print_sockaddr(addr, addrlen, 0);
     gemu_log(")");
 }
 
@@ -1821,7 +1821,7 @@ static void do_print_msgaddr(const char *name, abi_long arg1)
     print_buf(msg, len, 0);
     print_raw_param(TARGET_ABI_FMT_ld, len, 0);
     print_flags(msg_flags, flags, 0);
-    print_sockaddr(addr, addrlen);
+    print_sockaddr(addr, addrlen, 0);
     gemu_log(")");
 }