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Adds better packing defines.

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This commit is contained in:
Felix Queißner 2016-06-29 18:03:31 +02:00
parent 02bc1933ab
commit 2328ce6408
2 changed files with 13 additions and 14 deletions
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14
libvm/exp.h
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@ -1,9 +1,9 @@
#pragma once
#if defined(__gcc)
#define PACKED __attribute__ ((packed))
#if defined(_MSC_VER)
#define EXP_PACKED_STRUCT
#else
#define PACKED
#define EXP_PACKED_STRUCT __attribute__ ((packed))
#endif
#include <stdint.h>
@ -19,7 +19,7 @@ struct expfile
uint32_t numSections; // Number of sections
uint32_t posMeta; // File pointer of first metadata entry
uint32_t posSections; // File pointer of first section definition;
} PACKED;
} EXP_PACKED_STRUCT;
struct expsection
{
@ -28,13 +28,13 @@ struct expsection
uint32_t start; // File pointer to the begin of the section
uint32_t length; // Length of the section in bytes
char name[64]; // Name of the section, null terminated c-string
} PACKED;
} EXP_PACKED_STRUCT;
struct expstring
{
uint32_t start; // File pointer to the start of the string
uint32_t length; // Length of the string in bytes.
} PACKED;
} EXP_PACKED_STRUCT;
struct expmeta
{
@ -45,7 +45,7 @@ struct expmeta
int32_t i; // int32_t
struct expstring s; // ExpString
} value; // Value of the metadata
} PACKED;
} EXP_PACKED_STRUCT;
typedef struct expfile expfile_t;
typedef struct expsection expsection_t;

13
libvm/vm.h
View file

@ -3,13 +3,12 @@
#include <stddef.h>
#include <inttypes.h>
#if defined(__gcc)
#define PACKED __attribute__ ((packed))
#if defined(_MSC_VER)
#define VM_PACKED_STRUCT
#else
#define PACKED
#define VM_PACKED_STRUCT __attribute__ ((packed))
#endif
#if defined(__cplusplus)
extern "C" {
#else
@ -86,10 +85,10 @@ struct instruction
unsigned int flags : 1;
unsigned int output : 2;
uint32_t argument;
} PACKED ;
} VM_PACKED_STRUCT ;
static_assert(sizeof(Instruction) == 8, "Instruction must be 8 bytes large.");
static_assert(offsetof(Instruction, argument) == 4, "Argument must be must be 8 bytes large.");
static_assert(sizeof(struct instruction) == 8, "Instruction must be 8 bytes large.");
static_assert(offsetof(struct instruction, argument) == 4, "Argument must be must be 8 bytes large.");
struct spu
{