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#include <stdlib.h>
#include <stdio.h>
#include "libgccjit.h"
#include "harness.h"
volatile int the_volatile;
void
create_code (gcc_jit_context *ctxt, void *user_data)
{
/* Let's try to inject the equivalent of:
extern volatile int the_volatile;
int
test_using_volatile (void)
{
return the_volatile;
}
*/
gcc_jit_type *int_type =
gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
gcc_jit_type *volatile_int_type =
gcc_jit_type_get_volatile (int_type);
/* Build the test_fn. */
gcc_jit_function *test_fn =
gcc_jit_context_new_function (ctxt, NULL,
GCC_JIT_FUNCTION_EXPORTED,
int_type,
"test_using_volatile",
0, NULL,
0);
gcc_jit_block *block = gcc_jit_function_new_block (test_fn, NULL);
gcc_jit_lvalue *read_of_the_volatile =
gcc_jit_rvalue_dereference (
gcc_jit_context_new_rvalue_from_ptr (
ctxt,
gcc_jit_type_get_pointer (volatile_int_type),
(void *)&the_volatile),
NULL);
gcc_jit_block_end_with_return (
block, NULL,
gcc_jit_lvalue_as_rvalue (read_of_the_volatile));
}
void
verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
{
typedef int (*fn_type) (void);
CHECK_NON_NULL (result);
fn_type test_using_volatile =
(fn_type)gcc_jit_result_get_code (result, "test_using_volatile");
CHECK_NON_NULL (test_using_volatile);
the_volatile = 42;
/* Call the JIT-generated function. */
test_using_volatile ();
CHECK_VALUE (test_using_volatile (), 42);
}
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