Dibyendu Majumdar
9 years ago
parent
2f6bda172a
commit
767a1a67bb
@ -1,130 +0,0 @@
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/* This is a sample helloworld program obtained
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from https://gcc.gnu.org/onlinedocs/jit/intro/tutorial01.html
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*/
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/* Smoketest example for libgccjit.so
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Copyright (C) 2014-2015 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include <libgccjit.h>
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#include <stdlib.h>
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#include <stdio.h>
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static void
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create_code (gcc_jit_context *ctxt)
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{
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/* Let's try to inject the equivalent of:
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void
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greet (const char *name)
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{
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printf ("hello %s\n", name);
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}
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*/
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gcc_jit_type *void_type =
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gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_VOID);
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gcc_jit_type *const_char_ptr_type =
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gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_CONST_CHAR_PTR);
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gcc_jit_param *param_name =
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gcc_jit_context_new_param (ctxt, NULL, const_char_ptr_type, "name");
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gcc_jit_function *func =
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gcc_jit_context_new_function (ctxt, NULL,
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GCC_JIT_FUNCTION_EXPORTED,
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void_type,
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"greet",
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1, ¶m_name,
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0);
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gcc_jit_param *param_format =
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gcc_jit_context_new_param (ctxt, NULL, const_char_ptr_type, "format");
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gcc_jit_function *printf_func =
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gcc_jit_context_new_function (ctxt, NULL,
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GCC_JIT_FUNCTION_IMPORTED,
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gcc_jit_context_get_type (
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ctxt, GCC_JIT_TYPE_INT),
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"printf",
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1, ¶m_format,
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1);
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gcc_jit_rvalue *args[2];
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args[0] = gcc_jit_context_new_string_literal (ctxt, "hello %s\n");
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args[1] = gcc_jit_param_as_rvalue (param_name);
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gcc_jit_block *block = gcc_jit_function_new_block (func, NULL);
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gcc_jit_block_add_eval (
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block, NULL,
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gcc_jit_context_new_call (ctxt,
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NULL,
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printf_func,
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2, args));
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gcc_jit_block_end_with_void_return (block, NULL);
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}
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int
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main (int argc, char **argv)
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{
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gcc_jit_context *ctxt;
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gcc_jit_result *result;
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(void)argc;
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(void)argv;
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/* Get a "context" object for working with the library. */
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ctxt = gcc_jit_context_acquire ();
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if (!ctxt)
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{
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fprintf (stderr, "NULL ctxt");
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exit (1);
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}
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/* Set some options on the context.
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Let's see the code being generated, in assembler form. */
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gcc_jit_context_set_bool_option (
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ctxt,
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GCC_JIT_BOOL_OPTION_DUMP_GENERATED_CODE,
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0);
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/* Populate the context. */
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create_code (ctxt);
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/* Compile the code. */
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result = gcc_jit_context_compile (ctxt);
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if (!result)
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{
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fprintf (stderr, "NULL result");
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exit (1);
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}
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/* Extract the generated code from "result". */
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typedef void (*fn_type) (const char *);
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fn_type greet =
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(fn_type)gcc_jit_result_get_code (result, "greet");
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if (!greet)
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{
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fprintf (stderr, "NULL greet");
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exit (1);
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}
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/* Now call the generated function: */
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greet ("world");
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fflush (stdout);
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gcc_jit_context_release (ctxt);
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gcc_jit_result_release (result);
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return 0;
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}
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