hw/i386/vmport: replace fprintf() by trace events or LOG_UNIMP

Signed-off-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20171215034356.4449-2-f4bug@amsat.org>
[Replace unknown command tracepoint with LOG_UNIMP, add
 generic tracepoint for vmport commands. - Paolo]
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/i386/trace-events

@@ -113,3 +113,7 @@ amdvi_mode_invalid(uint8_t level, uint64_t addr)"error: translation level 0x%"PR
 amdvi_page_fault(uint64_t addr) "error: page fault accessing guest physical address 0x%"PRIx64
 amdvi_iotlb_hit(uint8_t bus, uint8_t slot, uint8_t func, uint64_t addr, uint64_t txaddr) "hit iotlb devid %02x:%02x.%x gpa 0x%"PRIx64" hpa 0x%"PRIx64
 amdvi_translation_result(uint8_t bus, uint8_t slot, uint8_t func, uint64_t addr, uint64_t txaddr) "devid: %02x:%02x.%x gpa 0x%"PRIx64" hpa 0x%"PRIx64
+
+# hw/i386/vmport.c
+vmport_register(unsigned char command, void *func, void *opaque) "command: 0x%02x func: %p opaque: %p"
+vmport_command(unsigned char command) "command: 0x%02x"

hw/i386/vmport.c

@@ -27,8 +27,7 @@
 #include "hw/i386/pc.h"
 #include "sysemu/hw_accel.h"
 #include "hw/qdev.h"
-
-/* #define VMPORT_DEBUG */
+#include "trace.h"
 
 #define VMPORT_CMD_GETVERSION 0x0a
 #define VMPORT_CMD_GETRAMSIZE 0x14
@@ -54,6 +53,7 @@ void vmport_register(unsigned char command, VMPortReadFunc *func, void *opaque)
         return;
     }
 
+    trace_vmport_register(command, func, opaque);
     port_state->func[command] = func;
     port_state->opaque[command] = opaque;
 }
@@ -76,13 +76,9 @@ static uint64_t vmport_ioport_read(void *opaque, hwaddr addr,
     }
 
     command = env->regs[R_ECX];
-    if (command >= VMPORT_ENTRIES) {
-        return eax;
-    }
-    if (!s->func[command]) {
-#ifdef VMPORT_DEBUG
-        fprintf(stderr, "vmport: unknown command %x\n", command);
-#endif
+    trace_vmport_command(command);
+    if (command >= VMPORT_ENTRIES || !s->func[command]) {
+        qemu_log_mask(LOG_UNIMP, "vmport: unknown command %x\n", command);
         return eax;
     }