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[PATCH v2 11/16] hw/i386/vmport: Add support for CMD_GETTIMEFULL


From: Liran Alon
Subject: [PATCH v2 11/16] hw/i386/vmport: Add support for CMD_GETTIMEFULL
Date: Tue, 10 Mar 2020 18:53:27 +0200

Similar to CMD_GETTIME but lacks the 136-year overflow issue,
by returning full 64-bit of host uSeconds.

Reviewed-by: Nikita Leshenko <address@hidden>
Signed-off-by: Liran Alon <address@hidden>
---
 hw/i386/vmport.c         | 17 +++++++++++++++++
 include/hw/i386/vmport.h |  1 +
 2 files changed, 18 insertions(+)

diff --git a/hw/i386/vmport.c b/hw/i386/vmport.c
index 15632c579199..445104c71c2b 100644
--- a/hw/i386/vmport.c
+++ b/hw/i386/vmport.c
@@ -172,6 +172,22 @@ static uint32_t vmport_cmd_time(void *opaque, uint32_t 
addr)
     return (uint32_t)tv.tv_sec;
 }
 
+static uint32_t vmport_cmd_time_full(void *opaque, uint32_t addr)
+{
+    X86CPU *cpu = X86_CPU(current_cpu);
+    qemu_timeval tv;
+
+    if (qemu_gettimeofday(&tv) < 0) {
+        return UINT32_MAX;
+    }
+
+    cpu->env.regs[R_ESI] = (uint32_t)((uint64_t)tv.tv_sec >> 32);
+    cpu->env.regs[R_EDX] = (uint32_t)tv.tv_sec;
+    cpu->env.regs[R_EBX] = (uint32_t)tv.tv_usec;
+    cpu->env.regs[R_ECX] = port_state->max_time_lag_us;
+    return VMPORT_MAGIC;
+}
+
 /* vmmouse helpers */
 void vmmouse_get_data(uint32_t *data)
 {
@@ -219,6 +235,7 @@ static void vmport_realizefn(DeviceState *dev, Error **errp)
     if (s->version > 1) {
         vmport_register(VMPORT_CMD_GETBIOSUUID, vmport_cmd_get_bios_uuid, 
NULL);
         vmport_register(VMPORT_CMD_GETTIME, vmport_cmd_time, NULL);
+        vmport_register(VMPORT_CMD_GETTIMEFULL, vmport_cmd_time_full, NULL);
     }
 }
 
diff --git a/include/hw/i386/vmport.h b/include/hw/i386/vmport.h
index 50416c8c8f3e..5d19963ed417 100644
--- a/include/hw/i386/vmport.h
+++ b/include/hw/i386/vmport.h
@@ -12,6 +12,7 @@ typedef enum {
     VMPORT_CMD_VMMOUSE_DATA     = 39,
     VMPORT_CMD_VMMOUSE_STATUS   = 40,
     VMPORT_CMD_VMMOUSE_COMMAND  = 41,
+    VMPORT_CMD_GETTIMEFULL      = 46,
     VMPORT_ENTRIES
 } VMPortCommand;
 
-- 
2.20.1




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