diff --git a/src/amd/compiler/aco_interface.cpp b/src/amd/compiler/aco_interface.cpp
index 7759464d833..5dde37b378f 100644
--- a/src/amd/compiler/aco_interface.cpp
+++ b/src/amd/compiler/aco_interface.cpp
@@ -266,7 +266,8 @@ aco_compile_vs_prolog(const struct aco_compiler_options* options,
                       const struct aco_shader_info* info,
                       const struct aco_vs_prolog_key* key,
                       const struct radv_shader_args* args,
-                      struct radv_shader_part_binary** binary)
+                      aco_prolog_callback *build_prolog,
+                      void **binary)
 {
    aco::init();
 
@@ -290,29 +291,18 @@ aco_compile_vs_prolog(const struct aco_compiler_options* options,
    code.reserve(align(program->blocks[0].instructions.size() * 2, 16));
    unsigned exec_size = aco::emit_program(program.get(), code);
 
-   /* copy into binary */
-   size_t size = code.size() * sizeof(uint32_t) + sizeof(radv_shader_part_binary);
-
    bool get_disasm = options->dump_shader || options->record_ir;
 
    std::string disasm;
-   if (get_disasm) {
+   if (get_disasm)
       disasm = get_disasm_string(program.get(), code, exec_size);
-      size += disasm.size();
-   }
 
-   radv_shader_part_binary* bin = (radv_shader_part_binary*)calloc(size, 1);
-
-   bin->num_sgprs = config.num_sgprs;
-   bin->num_vgprs = config.num_vgprs;
-   bin->num_preserved_sgprs = num_preserved_sgprs;
-   bin->code_size = code.size() * sizeof(uint32_t);
-   memcpy(bin->data, code.data(), bin->code_size);
-
-   if (get_disasm) {
-      disasm.copy((char*)bin->data + bin->code_size, disasm.size());
-      bin->disasm_size = disasm.size();
-   }
-
-   *binary = bin;
+   (*build_prolog)(binary,
+                   config.num_sgprs,
+                   config.num_vgprs,
+                   num_preserved_sgprs,
+                   code.data(),
+                   code.size(),
+                   disasm.data(),
+                   disasm.size());
 }
diff --git a/src/amd/compiler/aco_interface.h b/src/amd/compiler/aco_interface.h
index 3a30929f871..f1b6b91c36a 100644
--- a/src/amd/compiler/aco_interface.h
+++ b/src/amd/compiler/aco_interface.h
@@ -56,6 +56,16 @@ typedef void (aco_callback)(void **priv_ptr,
                             uint32_t exec_size,
                             const uint32_t *code,
                             uint32_t code_dw);
+
+typedef void (aco_prolog_callback)(void **priv_ptr,
+                                   uint32_t num_sgprs,
+                                   uint32_t num_vgprs,
+                                   uint32_t num_preserved_sgprs,
+                                   const uint32_t *code,
+                                   uint32_t code_size,
+                                   const char *disasm_str,
+                                   uint32_t disasm_size);
+
 extern const unsigned aco_num_statistics;
 extern const struct aco_compiler_statistic_info* aco_statistic_infos;
 
@@ -70,7 +80,8 @@ void aco_compile_vs_prolog(const struct aco_compiler_options* options,
                            const struct aco_shader_info* info,
                            const struct aco_vs_prolog_key* key,
                            const struct radv_shader_args* args,
-                           struct radv_shader_part_binary** binary);
+                           aco_prolog_callback *build_prolog,
+                           void **binary);
 
 uint64_t aco_get_codegen_flags();
 
diff --git a/src/amd/vulkan/radv_shader.c b/src/amd/vulkan/radv_shader.c
index 2f97821c88b..453f954fa7d 100644
--- a/src/amd/vulkan/radv_shader.c
+++ b/src/amd/vulkan/radv_shader.c
@@ -2329,6 +2329,33 @@ upload_shader_part(struct radv_device *device, struct radv_shader_part_binary *b
    return shader_part;
 }
 
+static void radv_aco_build_prolog(void **bin,
+                                  uint32_t num_sgprs,
+                                  uint32_t num_vgprs,
+                                  uint32_t num_preserved_sgprs,
+                                  const uint32_t *code,
+                                  uint32_t code_size,
+                                  const char *disasm_str,
+                                  uint32_t disasm_size)
+{
+   struct radv_shader_part_binary **binary = (struct radv_shader_part_binary **)bin;
+   size_t size = code_size * sizeof(uint32_t) + sizeof(struct radv_shader_part_binary);
+
+   size += disasm_size;
+   struct radv_shader_part_binary *prolog_binary = (struct radv_shader_part_binary *)calloc(size, 1);
+
+   prolog_binary->num_sgprs = num_sgprs;
+   prolog_binary->num_vgprs = num_vgprs;
+   prolog_binary->num_preserved_sgprs = num_preserved_sgprs;
+   prolog_binary->code_size = code_size * sizeof(uint32_t);
+   memcpy(prolog_binary->data, code, prolog_binary->code_size);
+   if (disasm_size)
+      memcpy((char*)prolog_binary->data + prolog_binary->code_size,
+             disasm_str, disasm_size);
+
+   *binary = prolog_binary;
+}
+
 struct radv_shader_part *
 radv_create_vs_prolog(struct radv_device *device, const struct radv_vs_prolog_key *key)
 {
@@ -2373,7 +2400,7 @@ radv_create_vs_prolog(struct radv_device *device, const struct radv_vs_prolog_ke
    radv_aco_convert_shader_info(&ac_info, &info);
    radv_aco_convert_opts(&ac_opts, &options);
    radv_aco_convert_vs_prolog_key(&ac_key, key);
-   aco_compile_vs_prolog(&ac_opts, &ac_info, &ac_key, &args, &binary);
+   aco_compile_vs_prolog(&ac_opts, &ac_info, &ac_key, &args, &radv_aco_build_prolog, (void **)&binary);
    struct radv_shader_part *prolog = upload_shader_part(device, binary, info.wave_size);
    if (prolog) {
       prolog->nontrivial_divisors = key->state->nontrivial_divisors;