clover: Stub missing CL 1.2 functions.

As sugested by Tom a long time ago
and in order to be able to create Piglit tests

v2:
replace NOT_SUPPORTED_BY_CL_1_1 macro with an inline function
remove extra space in clLinkProgram arg

v3:
use __func__

v4:
back to a macro, it make more sense to use it with __func__

[ Francisco Jerez: Rename to CLOVER_NOT_SUPPORTED_UNTIL and pass the
  minimum API version required by the entry point so the error
  messages don't become stale when support for additional CL versions
  is introduced. ]

Reviewed-by: Francisco Jerez <currojerez@riseup.net>

src/gallium/state_trackers/clover/api/dispatch.cpp

@@ -123,12 +123,12 @@ namespace clover {
       clCreateImage,
       clCreateProgramWithBuiltInKernels,
       clCompileProgram,
-      NULL, // clLinkProgram
+      clLinkProgram,
       clUnloadPlatformCompiler,
-      NULL, // clGetKernelArgInfo
-      NULL, // clEnqueueFillBuffer
-      NULL, // clEnqueueFillImage
-      NULL, // clEnqueueMigrateMemObjects
+      clGetKernelArgInfo,
+      clEnqueueFillBuffer,
+      clEnqueueFillImage,
+      clEnqueueMigrateMemObjects,
       clEnqueueMarkerWithWaitList,
       clEnqueueBarrierWithWaitList,
       NULL, // clGetExtensionFunctionAddressForPlatform

src/gallium/state_trackers/clover/api/kernel.cpp

@@ -189,6 +189,14 @@ clGetKernelWorkGroupInfo(cl_kernel d_kern, cl_device_id d_dev,
    return CL_INVALID_DEVICE;
 }
 
+CLOVER_API cl_int
+clGetKernelArgInfo(cl_kernel d_kern,
+                   cl_uint idx, cl_kernel_arg_info param,
+                   size_t size, void *r_buf, size_t *r_size) {
+   CLOVER_NOT_SUPPORTED_UNTIL("1.2");
+   return CL_KERNEL_ARG_INFO_NOT_AVAILABLE;
+}
+
 namespace {
    ///
    /// Common argument checking shared by kernel invocation commands.

src/gallium/state_trackers/clover/api/memory.cpp

@@ -357,9 +357,29 @@ clCreateImage(cl_context d_ctx, cl_mem_flags flags,
               const cl_image_format *format,
               const cl_image_desc *image_desc,
               void *host_ptr, cl_int *r_errcode) {
-   // This function was added in OpenCL 1.2
-   std::cerr << "CL user error: clCreateImage() not supported by OpenCL 1.1." <<
-                std::endl;
+   CLOVER_NOT_SUPPORTED_UNTIL("1.2");
    ret_error(r_errcode, CL_INVALID_OPERATION);
    return NULL;
 }
+
+CLOVER_API cl_int
+clEnqueueFillBuffer(cl_command_queue command_queue, cl_mem buffer,
+                    const void *pattern, size_t pattern_size,
+                    size_t offset, size_t size,
+                    cl_uint num_events_in_wait_list,
+                    const cl_event *event_wait_list,
+                    cl_event *event) {
+   CLOVER_NOT_SUPPORTED_UNTIL("1.2");
+   return CL_INVALID_VALUE;
+}
+
+CLOVER_API cl_int
+clEnqueueFillImage(cl_command_queue command_queue, cl_mem image,
+                   const void *fill_color,
+                   const size_t *origin, const size_t *region,
+                   cl_uint num_events_in_wait_list,
+                   const cl_event *event_wait_list,
+                   cl_event *event) {
+   CLOVER_NOT_SUPPORTED_UNTIL("1.2");
+   return CL_INVALID_VALUE;
+}

src/gallium/state_trackers/clover/api/program.cpp

@@ -231,6 +231,16 @@ clCompileProgram(cl_program d_prog, cl_uint num_devs,
    return e.get();
 }
 
+CLOVER_API cl_program
+clLinkProgram(cl_context d_ctx, cl_uint num_devs, const cl_device_id *d_devs,
+              const char *p_opts, cl_uint num_progs, const cl_program *d_progs,
+              void (*pfn_notify)(cl_program, void *), void *user_data,
+              cl_int *r_errcode) {
+   CLOVER_NOT_SUPPORTED_UNTIL("1.2");
+   ret_error(r_errcode, CL_LINKER_NOT_AVAILABLE);
+   return NULL;
+}
+
 CLOVER_API cl_int
 clUnloadCompiler() {
    return CL_SUCCESS;

src/gallium/state_trackers/clover/api/transfer.cpp

@@ -726,3 +726,15 @@ clEnqueueUnmapMemObject(cl_command_queue d_q, cl_mem d_mem, void *ptr,
 } catch (error &e) {
    return e.get();
 }
+
+CLOVER_API cl_int
+clEnqueueMigrateMemObjects(cl_command_queue command_queue,
+                           cl_uint num_mem_objects,
+                           const cl_mem *mem_objects,
+                           cl_mem_migration_flags flags,
+                           cl_uint num_events_in_wait_list,
+                           const cl_event *event_wait_list,
+                           cl_event *event) {
+   CLOVER_NOT_SUPPORTED_UNTIL("1.2");
+   return CL_INVALID_VALUE;
+}

src/gallium/state_trackers/clover/api/util.hpp

@@ -38,6 +38,13 @@
 #define CLOVER_ICD_API PUBLIC
 #endif
 
+#define CLOVER_NOT_SUPPORTED_UNTIL(version)                    \
+   do {                                                        \
+      std::cerr << "CL user error: " << __func__               \
+                << "() requires OpenCL version " << (version)  \
+                << " or greater." << std::endl;                \
+   } while (0)
+
 namespace clover {
    ///
    /// Return an error code in \a p if non-zero.