Porting layer

System abstraction layer. More...

Detailed Description

System abstraction layer.

Describes compiler and processor to lwIP.

Files
file	cc.h
	Compiler/platform abstraction.
file	sys_arch.h
	OS abstraction layer.

Data Structures
struct	sys_mbox_t
	Platform specific mailbox type. More...

Macros
#define	BYTE_ORDER   (LITTLE_ENDIAN)
	platform's endianness
#define	LWIP_COMPAT_MUTEX   (0)
	System configuration.

Typedefs
typedef kernel_pid_t	sys_thread_t
	Platform specific thread type.

Variables
kernel_pid_t	lwip_tcpip_thread
	PID of the lwIP TCP/IP thread.

Semaphores definitions
See also https://www.nongnu.org/lwip/2_1_x/group__sys__sem.html
typedef sema_t	sys_sem_t
	Platform specific semaphore type.
static bool	sys_sem_valid (sys_sem_t *sem)
#define	sys_sem_valid(sem)   (sys_sem_valid(sem))
#define	sys_sem_set_invalid(sem)

Mutexes definitions
See also https://www.nongnu.org/lwip/2_1_x/group__sys__mutex.html
typedef mutex_t	sys_mutex_t
	Platform specific mutex type.
static bool	sys_mutex_valid (sys_mutex_t *mutex)
#define	sys_mutex_valid(mutex)   (sys_mutex_valid(mutex))
#define	sys_mutex_set_invalid(mutex)

Mailboxes OS abstraction layer definitions
See also https://www.nongnu.org/lwip/2_1_x/group__sys__mbox.html
static bool	sys_mbox_valid (sys_mbox_t *mbox)
static void	sys_mbox_set_invalid (sys_mbox_t *mbox)
#define	SYS_MBOX_SIZE   (8)
#define	sys_mbox_valid(mbox)   (sys_mbox_valid(mbox))
#define	sys_mbox_set_invalid(mbox)   (sys_mbox_set_invalid(mbox))

Functions for locking/unlocking core to assure thread safety.
void	sys_lock_tcpip_core (void)
void	sys_unlock_tcpip_core (void)
#define	LOCK_TCPIP_CORE()   sys_lock_tcpip_core()
#define	UNLOCK_TCPIP_CORE()   sys_unlock_tcpip_core()

(sn)printf formatters for the generic lwIP types
#define	X8_F   "02" PRIx8
#define	U16_F   PRIu16
#define	S16_F   PRId16
#define	X16_F   PRIx16
#define	U32_F   PRIu32
#define	S32_F   PRId32
#define	X32_F   PRIx32
#define	SZT_F   PRIuPTR

Compiler hints for packing structures
#define	PACK_STRUCT_FIELD(x)   x
#define	PACK_STRUCT_STRUCT   __attribute__((packed))
#define	PACK_STRUCT_BEGIN
#define	PACK_STRUCT_END

Platform specific diagnostic output
#define	LWIP_PLATFORM_DIAG(x)   printf x
#define	LWIP_PLATFORM_ASSERT(x)

Critical sections protection definitions
See also https://www.nongnu.org/lwip/2_1_x/group__sys__prot.html
#define	SYS_ARCH_PROTECT(x)   mutex_lock(&x)
#define	SYS_ARCH_UNPROTECT(x)   mutex_unlock(&x)
#define	SYS_ARCH_DECL_PROTECT(x)   mutex_t x = MUTEX_INIT

Macro Definition Documentation

LWIP_PLATFORM_ASSERT

#define LWIP_PLATFORM_ASSERT

(

x

)

Value:

        do { \
            printf("Assertion \"%s\" failed at %s:%d\n", x, __FILE__, __LINE__); \
            fflush(NULL); \
            abort(); \
        } while (0)

Definition at line 96 of file cc.h.