diff --git a/dlls/pdh/pdh.spec b/dlls/pdh/pdh.spec
index 7ed42076daa..2f575f89c9c 100644
--- a/dlls/pdh/pdh.spec
+++ b/dlls/pdh/pdh.spec
@@ -40,9 +40,9 @@
 @ stub PdhExpandWildCardPathHW
 @ stub PdhExpandWildCardPathW
 @ stub PdhFormatFromRawValue
-@ stub PdhGetCounterInfoA
-@ stub PdhGetCounterInfoW
-@ stub PdhGetCounterTimeBase
+@ stdcall PdhGetCounterInfoA(ptr long ptr ptr)
+@ stdcall PdhGetCounterInfoW(ptr long ptr ptr)
+@ stdcall PdhGetCounterTimeBase(ptr ptr)
 @ stub PdhGetDataSourceTimeRangeA
 @ stub PdhGetDataSourceTimeRangeH
 @ stub PdhGetDataSourceTimeRangeW
diff --git a/dlls/pdh/pdh_main.c b/dlls/pdh/pdh_main.c
index a04d1ebed5f..62c99f0dd33 100644
--- a/dlls/pdh/pdh_main.c
+++ b/dlls/pdh/pdh_main.c
@@ -2,6 +2,7 @@
  * Performance Data Helper (pdh.dll)
  *
  * Copyright 2007 Andrey Turkin
+ * Copyright 2007 Hans Leidekker
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -283,6 +284,84 @@ PDH_STATUS WINAPI PdhCollectQueryData( PDH_HQUERY handle )
     return ERROR_SUCCESS;
 }
 
+/***********************************************************************
+ *              PdhGetCounterInfoA   (PDH.@)
+ */
+PDH_STATUS WINAPI PdhGetCounterInfoA( PDH_HCOUNTER handle, BOOLEAN text, LPDWORD size, PPDH_COUNTER_INFO_A info )
+{
+    struct counter *counter = handle;
+
+    TRACE("%p %d %p %p\n", handle, text, size, info);
+
+    if (!counter) return PDH_INVALID_HANDLE;
+    if (!size)    return PDH_INVALID_ARGUMENT;
+
+    if (*size < sizeof(PDH_COUNTER_INFO_A))
+    {
+        *size = sizeof(PDH_COUNTER_INFO_A);
+        return PDH_MORE_DATA;
+    }
+
+    memset( info, 0, sizeof(PDH_COUNTER_INFO_A) );
+
+    info->dwType          = counter->type;
+    info->CStatus         = counter->status;
+    info->lScale          = counter->scale;
+    info->lDefaultScale   = counter->defaultscale;
+    info->dwUserData      = counter->user;
+    info->dwQueryUserData = counter->queryuser;
+
+    *size = sizeof(PDH_COUNTER_INFO_A);
+    return ERROR_SUCCESS;
+}
+
+/***********************************************************************
+ *              PdhGetCounterInfoW   (PDH.@)
+ */
+PDH_STATUS WINAPI PdhGetCounterInfoW( PDH_HCOUNTER handle, BOOLEAN text, LPDWORD size, PPDH_COUNTER_INFO_W info )
+{
+    struct counter *counter = handle;
+
+    TRACE("%p %d %p %p\n", handle, text, size, info);
+
+    if (!size)    return PDH_INVALID_ARGUMENT;
+    if (!counter) return PDH_INVALID_HANDLE;
+
+    if (*size < sizeof(PDH_COUNTER_INFO_W))
+    {
+        *size = sizeof(PDH_COUNTER_INFO_W);
+        return PDH_MORE_DATA;
+    }
+
+    memset( info, 0, sizeof(PDH_COUNTER_INFO_W) );
+
+    info->dwType          = counter->type;
+    info->CStatus         = counter->status;
+    info->lScale          = counter->scale;
+    info->lDefaultScale   = counter->defaultscale;
+    info->dwUserData      = counter->user;
+    info->dwQueryUserData = counter->queryuser;
+
+    *size = sizeof(PDH_COUNTER_INFO_A);
+    return ERROR_SUCCESS;
+}
+
+/***********************************************************************
+ *              PdhGetCounterTimeBase   (PDH.@)
+ */
+PDH_STATUS WINAPI PdhGetCounterTimeBase( PDH_HCOUNTER handle, LONGLONG *base )
+{
+    struct counter *counter = handle;
+
+    TRACE("%p %p\n", handle, base);
+
+    if (!base)    return PDH_INVALID_ARGUMENT;
+    if (!counter) return PDH_INVALID_HANDLE;
+
+    *base = counter->base;
+    return ERROR_SUCCESS;
+}
+
 /***********************************************************************
  *              PdhGetFormattedCounterValue   (PDH.@)
  */
diff --git a/dlls/pdh/tests/pdh.c b/dlls/pdh/tests/pdh.c
index 6ddb0971d06..12770ed1aa3 100644
--- a/dlls/pdh/tests/pdh.c
+++ b/dlls/pdh/tests/pdh.c
@@ -213,6 +213,89 @@ static void test_PdhSetCounterScaleFactor( void )
     ok(ret == ERROR_SUCCESS, "PdhCloseQuery failed 0x%08x\n", ret);
 }
 
+static void test_PdhGetCounterTimeBase( void )
+{
+    PDH_STATUS ret;
+    PDH_HQUERY query;
+    PDH_HCOUNTER counter;
+    LONGLONG base;
+
+    ret = PdhOpenQueryA( NULL, 0, &query );
+    ok(ret == ERROR_SUCCESS, "PdhOpenQueryA failed 0x%08x\n", ret);
+
+    ret = PdhAddCounterA( query, "\\System\\System Up Time", 0, &counter );
+    ok(ret == ERROR_SUCCESS, "PdhAddCounterA failed 0x%08x\n", ret);
+
+    ret = PdhGetCounterTimeBase( NULL, NULL );
+    ok(ret == PDH_INVALID_ARGUMENT, "PdhGetCounterTimeBase failed 0x%08x\n", ret);
+
+    ret = PdhGetCounterTimeBase( NULL, &base );
+    ok(ret == PDH_INVALID_HANDLE, "PdhGetCounterTimeBase failed 0x%08x\n", ret);
+
+    ret = PdhGetCounterTimeBase( counter, NULL );
+    ok(ret == PDH_INVALID_ARGUMENT, "PdhGetCounterTimeBase failed 0x%08x\n", ret);
+
+    ret = PdhGetCounterTimeBase( counter, &base );
+    ok(ret == ERROR_SUCCESS, "PdhGetCounterTimeBase failed 0x%08x\n", ret);
+
+    ret = PdhCloseQuery( query );
+    ok(ret == ERROR_SUCCESS, "PdhCloseQuery failed 0x%08x\n", ret);
+}
+
+static void test_PdhGetCounterInfo( void )
+{
+    PDH_STATUS ret;
+    PDH_HQUERY query;
+    PDH_HCOUNTER counter;
+    PDH_COUNTER_INFO_A info;
+    DWORD size;
+
+    ret = PdhOpenQueryA( NULL, 0, &query );
+    ok(ret == ERROR_SUCCESS, "PdhOpenQueryA failed 0x%08x\n", ret);
+
+    ret = PdhAddCounterA( query, "\\System\\System Up Time", 0, &counter );
+    ok(ret == ERROR_SUCCESS, "PdhAddCounterA failed 0x%08x\n", ret);
+
+    ret = PdhGetCounterInfoA( NULL, 0, NULL, NULL );
+    ok(ret == PDH_INVALID_HANDLE, "PdhGetCounterInfoA failed 0x%08x\n", ret);
+
+    ret = PdhGetCounterInfoA( counter, 0, NULL, NULL );
+    ok(ret == PDH_INVALID_ARGUMENT, "PdhGetCounterInfoA failed 0x%08x\n", ret);
+
+    ret = PdhGetCounterInfoA( counter, 0, NULL, &info );
+    ok(ret == PDH_INVALID_ARGUMENT, "PdhGetCounterInfoA failed 0x%08x\n", ret);
+
+    size = sizeof(info) - 1;
+    ret = PdhGetCounterInfoA( counter, 0, &size, NULL );
+    ok(ret == PDH_MORE_DATA, "PdhGetCounterInfoA failed 0x%08x\n", ret);
+
+    size = sizeof(info);
+    ret = PdhGetCounterInfoA( counter, 0, &size, &info );
+    ok(ret == ERROR_SUCCESS, "PdhGetCounterInfoA failed 0x%08x\n", ret);
+    ok(size == sizeof(info), "PdhGetCounterInfoA failed %d\n", size);
+
+    ret = PdhGetCounterInfoA( counter, 0, &size, &info );
+    ok(ret == ERROR_SUCCESS, "PdhGetCounterInfoA failed 0x%08x\n", ret);
+    ok(info.lScale == 0, "lScale %d\n", info.lScale);
+
+    ret = PdhSetCounterScaleFactor( counter, 0 );
+    ok(ret == ERROR_SUCCESS, "PdhSetCounterScaleFactor failed 0x%08x\n", ret);
+
+    ret = PdhGetCounterInfoA( counter, 0, &size, &info );
+    ok(ret == ERROR_SUCCESS, "PdhGetCounterInfoA failed 0x%08x\n", ret);
+    ok(info.lScale == 0, "lScale %d\n", info.lScale);
+
+    ret = PdhSetCounterScaleFactor( counter, -5 );
+    ok(ret == ERROR_SUCCESS, "PdhSetCounterScaleFactor failed 0x%08x\n", ret);
+
+    ret = PdhGetCounterInfoA( counter, 0, &size, &info );
+    ok(ret == ERROR_SUCCESS, "PdhGetCounterInfoA failed 0x%08x\n", ret);
+    ok(info.lScale == -5, "lScale %d\n", info.lScale);
+
+    ret = PdhCloseQuery( query );
+    ok(ret == ERROR_SUCCESS, "PdhCloseQuery failed 0x%08x\n", ret);
+}
+
 START_TEST(pdh)
 {
     test_open_close_query();
@@ -220,4 +303,6 @@ START_TEST(pdh)
     test_PdhGetFormattedCounterValue();
     test_PdhGetRawCounterValue();
     test_PdhSetCounterScaleFactor();
+    test_PdhGetCounterTimeBase();
+    test_PdhGetCounterInfo();
 }