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#include <stdlib.h>
#include <stdio.h>
#include "libgccjit++.h"
#include "harness.h"
struct s2
{
char x __attribute__ ((aligned (2)));
char y __attribute__ ((aligned (2)));
};
struct s4
{
char x __attribute__ ((aligned (4)));
char y __attribute__ ((aligned (4)));
};
struct s8
{
char x __attribute__ ((aligned (8)));
char y __attribute__ ((aligned (8)));
};
struct s16
{
char x __attribute__ ((aligned (16)));
char y __attribute__ ((aligned (16)));
};
struct s32
{
char x __attribute__ ((aligned (32)));
char y __attribute__ ((aligned (32)));
};
struct s64
{
char x __attribute__ ((aligned (64)));
char y __attribute__ ((aligned (64)));
};
struct s128
{
char x __attribute__ ((aligned (128)));
char y __attribute__ ((aligned (128)));
};
static void
create_aligned_code (gcc_jit_context *c_ctxt, const char *struct_name,
unsigned int alignment, const char *reader_fn_name,
const char *writer_fn_name)
{
/* Let's try to inject the equivalent of:
char
READER_FN_NAME (const struct STRUCT_NAME *f)
{
return f->x * f->y;
}
char
WRITER_FN_NAME (struct STRUCT_NAME *g)
{
g->x = 5;
g->y = 7;
return READER_FN_NAME (g);
}
*/
gccjit::context ctxt (c_ctxt);
gccjit::type char_type = ctxt.get_type (GCC_JIT_TYPE_CHAR);
gccjit::type aligned_char_type = char_type.get_aligned (alignment);
gccjit::field x = ctxt.new_field (aligned_char_type, "x");
gccjit::field y = ctxt.new_field (aligned_char_type, "y");
std::vector<gccjit::field> fields = {x, y};
gccjit::type struct_type = ctxt.new_struct_type (struct_name, fields);
gccjit::type const_struct_type = struct_type.get_const ();
gccjit::type const_ptr_type = const_struct_type.get_pointer ();
/* Build the reader fn. */
gccjit::param param_f = ctxt.new_param (const_ptr_type, "f");
std::vector<gccjit::param> params = {param_f};
gccjit::function fn_test_reading
= ctxt.new_function (GCC_JIT_FUNCTION_EXPORTED,
char_type,
reader_fn_name,
params,
0);
/* return f->x * f->y; */
gccjit::block reading_block = fn_test_reading.new_block ();
reading_block.end_with_return (param_f.dereference_field (x)
* param_f.dereference_field (y));
/* Build the writer fn. */
gccjit::type ptr_type = struct_type.get_pointer ();
gccjit::param param_g = ctxt.new_param (ptr_type, "g");
params = {param_g};
gccjit::function fn_test_writing
= ctxt.new_function (GCC_JIT_FUNCTION_EXPORTED,
char_type,
writer_fn_name,
params,
0);
/* g->x = 5; */
gccjit::block writing_block = fn_test_writing.new_block ();
writing_block.add_assignment (param_g.dereference_field (x),
ctxt.new_rvalue (char_type, 5));
/* g->y = 7; */
writing_block.add_assignment (param_g.dereference_field (y),
ctxt.new_rvalue (char_type, 7));
/* return READER_FN_NAME (g); */
writing_block.end_with_return (ctxt.new_call (fn_test_reading,
param_g));
}
/* Implement a verifier function for a given struct. */
template <typename T>
static void
verify_aligned_code (gcc_jit_context *ctxt,
gcc_jit_result *result,
const char *writer_fn_name)
{
typedef char (*fn_type) (T *);
CHECK_NON_NULL (result);
T tmp;
memset (&tmp, 0xac, sizeof (tmp));
fn_type test_writing =
(fn_type)gcc_jit_result_get_code (result, writer_fn_name);
CHECK_NON_NULL (test_writing);
/* Verify that the code correctly returns the product of the fields. */
CHECK_VALUE (test_writing (&tmp), 35);
/* Verify the we can read the values of the fields, and thus that the
struct layout agrees with that of the C++ frontend. */
CHECK_VALUE (tmp.x, 5);
CHECK_VALUE (tmp.y, 7);
}
void
create_code (gcc_jit_context *ctxt, void *user_data)
{
create_aligned_code (ctxt, "s2", 2, "test_aligned_reading_s2",
"test_aligned_writing_s2");
create_aligned_code (ctxt, "s4", 4, "test_aligned_reading_s4",
"test_aligned_writing_s4");
create_aligned_code (ctxt, "s8", 8, "test_aligned_reading_s8",
"test_aligned_writing_s8");
create_aligned_code (ctxt, "s16", 16, "test_aligned_reading_s16",
"test_aligned_writing_s16");
create_aligned_code (ctxt, "s32", 32, "test_aligned_reading_s32",
"test_aligned_writing_s32");
create_aligned_code (ctxt, "s64", 64, "test_aligned_reading_s64",
"test_aligned_writing_s64");
create_aligned_code (ctxt, "s128", 128, "test_aligned_reading_s128",
"test_aligned_writing_s128");
}
void
verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
{
verify_aligned_code<s2> (ctxt, result, "test_aligned_writing_s2");
verify_aligned_code<s4> (ctxt, result, "test_aligned_writing_s4");
verify_aligned_code<s8> (ctxt, result, "test_aligned_writing_s8");
verify_aligned_code<s16> (ctxt, result, "test_aligned_writing_s16");
verify_aligned_code<s32> (ctxt, result, "test_aligned_writing_s32");
verify_aligned_code<s64> (ctxt, result, "test_aligned_writing_s64");
verify_aligned_code<s128> (ctxt, result, "test_aligned_writing_s128");
}
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