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/*
* Copyright (C) 2007-2010 Wayne Meissner
*
* This file is part of the JNR project.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <stddef.h>
#include <stdint.h>
typedef char Signed8;
typedef short Signed16;
typedef int Signed32;
typedef long long Signed64;
typedef float Float32;
typedef double Float64;
typedef long SignedLong;
struct test1 {
char b;
short s;
int i;
long long j;
SignedLong l;
float f;
double d;
char string[32];
};
#define T(x, type) \
type struct_field_##type(struct test1* t) { return t->x; } \
struct type##Align { char first; type value; }; \
type struct_align_##type(struct type##Align* a) { return a->value; }
T(b, Signed8);
T(s, Signed16);
T(i, Signed32);
T(j, Signed64);
T(f, Float32);
T(d, Float64);
long struct_field_SignedLong(struct test1* t) { return t->l; }
struct SignedLongAlign { char first; SignedLong value; };
long struct_align_SignedLong(struct SignedLongAlign* a) { return a->value; }
void
struct_set_string(struct test1* t, char* s)
{
strcpy(t->string, s);
}
struct test1*
struct_make_struct(char b, short s, int i, long long ll, float f, double d)
{
static struct test1 t;
memset(&t, 0, sizeof(t));
t.b = b;
t.s = s;
t.i = i;
t.j = ll;
t.f = f;
t.d = d;
return &t;
}
struct foo {
unsigned long l1,l2, l3;
};
int
fill_struct_from_longs(unsigned long l1, unsigned long l2, struct foo* s, unsigned long l3)
{
s->l1 = l1;
s->l2 = l2;
s->l3 = l3;
return 0;
}
#define STRUCT_ALIGNMENT(alignment) \
struct StructAlignment##alignment { \
uint8_t f0; \
uint16_t f1; \
uint32_t f2; \
uint64_t f3; \
void *f4; \
}; \
\
int struct_alignment_size_##alignment() { \
return sizeof(struct StructAlignment##alignment); \
} \
\
int struct_alignment_field_offset_##alignment(int field) { \
switch(field) { \
case 0: \
return offsetof(struct StructAlignment##alignment, f0); \
case 1: \
return offsetof(struct StructAlignment##alignment, f1); \
case 2: \
return offsetof(struct StructAlignment##alignment, f2); \
case 3: \
return offsetof(struct StructAlignment##alignment, f3); \
case 4: \
return offsetof(struct StructAlignment##alignment, f4); \
default: \
return -1; \
} \
} \
\
struct InnerStructAlignment1_##alignment { \
uint8_t f0; \
uint16_t f1; \
uint32_t f2; \
uint64_t f3; \
void *f4; \
struct InnerStructAlignment2_##alignment { \
uint8_t f0; \
uint16_t f1; \
uint32_t f2; \
uint64_t f3; \
void *f4; \
struct InnerStructAlignment3_##alignment { \
uint8_t f0; \
uint16_t f1; \
uint32_t f2; \
uint64_t f3; \
void *f4; \
} f5; \
} f5; \
}; \
\
int inner_struct_alignment_size_##alignment() { \
return sizeof(struct InnerStructAlignment1_##alignment); \
} \
\
int inner_struct_alignment_field_offset_##alignment(int level, int field) { \
switch(field) { \
case 0: \
switch(level) { \
case 0: \
return offsetof(struct InnerStructAlignment1_##alignment, f0); \
case 1: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f0); \
case 2: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f5.f0); \
default: \
return -1; \
} \
case 1: \
switch(level) { \
case 0: \
return offsetof(struct InnerStructAlignment1_##alignment, f1); \
case 1: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f1); \
case 2: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f5.f1); \
default: \
return -1; \
} \
case 2: \
switch(level) { \
case 0: \
return offsetof(struct InnerStructAlignment1_##alignment, f2); \
case 1: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f2); \
case 2: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f5.f2); \
default: \
return -1; \
} \
case 3: \
switch(level) { \
case 0: \
return offsetof(struct InnerStructAlignment1_##alignment, f3); \
case 1: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f3); \
case 2: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f5.f3); \
default: \
return -1; \
} \
case 4: \
switch(level) { \
case 0: \
return offsetof(struct InnerStructAlignment1_##alignment, f4); \
case 1: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f4); \
case 2: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f5.f4); \
default: \
return -1; \
} \
case 5: \
switch(level) { \
case 0: \
return offsetof(struct InnerStructAlignment1_##alignment, f5); \
case 1: \
return offsetof(struct InnerStructAlignment1_##alignment, f5.f5); \
default: \
return -1; \
} \
default: \
return -1; \
} \
}
#pragma pack(push, 1)
STRUCT_ALIGNMENT(1)
#pragma pack(pop)
#pragma pack(push, 2)
STRUCT_ALIGNMENT(2)
#pragma pack(pop)
#pragma pack(push, 4)
STRUCT_ALIGNMENT(4)
#pragma pack(pop)
#pragma pack(push, 8)
STRUCT_ALIGNMENT(8)
#pragma pack(pop)
#pragma pack(push, 16)
STRUCT_ALIGNMENT(16)
#pragma pack(pop)
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