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+/* Smoketest example for libgccjit.so
+ Copyright (C) 2014 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include <libgccjit.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+static void
+create_code (gcc_jit_context *ctxt)
+{
+ /* Let's try to inject the equivalent of:
+ void
+ greet (const char *name)
+ {
+ printf ("hello %s\n", name);
+ }
+ */
+ gcc_jit_type *void_type =
+ gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_VOID);
+ gcc_jit_type *const_char_ptr_type =
+ gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_CONST_CHAR_PTR);
+ gcc_jit_param *param_name =
+ gcc_jit_context_new_param (ctxt, NULL, const_char_ptr_type, "name");
+ gcc_jit_function *func =
+ gcc_jit_context_new_function (ctxt, NULL,
+ GCC_JIT_FUNCTION_EXPORTED,
+ void_type,
+ "greet",
+ 1, &param_name,
+ 0);
+
+ gcc_jit_param *param_format =
+ gcc_jit_context_new_param (ctxt, NULL, const_char_ptr_type, "format");
+ gcc_jit_function *printf_func =
+ gcc_jit_context_new_function (ctxt, NULL,
+ GCC_JIT_FUNCTION_IMPORTED,
+ gcc_jit_context_get_type (
+ ctxt, GCC_JIT_TYPE_INT),
+ "printf",
+ 1, &param_format,
+ 1);
+ gcc_jit_rvalue *args[2];
+ args[0] = gcc_jit_context_new_string_literal (ctxt, "hello %s\n");
+ args[1] = gcc_jit_param_as_rvalue (param_name);
+
+ gcc_jit_block *block = gcc_jit_function_new_block (func, NULL);
+
+ gcc_jit_block_add_eval (
+ block, NULL,
+ gcc_jit_context_new_call (ctxt,
+ NULL,
+ printf_func,
+ 2, args));
+ gcc_jit_block_end_with_void_return (block, NULL);
+}
+
+int
+main (int argc, char **argv)
+{
+ gcc_jit_context *ctxt;
+ gcc_jit_result *result;
+
+ /* Get a "context" object for working with the library. */
+ ctxt = gcc_jit_context_acquire ();
+ if (!ctxt)
+ {
+ fprintf (stderr, "NULL ctxt");
+ exit (1);
+ }
+
+ /* Set some options on the context.
+ Let's see the code being generated, in assembler form. */
+ gcc_jit_context_set_bool_option (
+ ctxt,
+ GCC_JIT_BOOL_OPTION_DUMP_GENERATED_CODE,
+ 0);
+
+ /* Populate the context. */
+ create_code (ctxt);
+
+ /* Compile the code. */
+ result = gcc_jit_context_compile (ctxt);
+ if (!result)
+ {
+ fprintf (stderr, "NULL result");
+ exit (1);
+ }
+
+ /* Extract the generated code from "result". */
+ typedef void (*fn_type) (const char *);
+ fn_type greet =
+ (fn_type)gcc_jit_result_get_code (result, "greet");
+ if (!greet)
+ {
+ fprintf (stderr, "NULL greet");
+ exit (1);
+ }
+
+ /* Now call the generated function: */
+ greet ("world");
+ fflush (stdout);
+
+ gcc_jit_context_release (ctxt);
+ gcc_jit_result_release (result);
+ return 0;
+}