1 #ifndef __LWIP_ARCH_SYS_ARCH_H__ 2 #define __LWIP_ARCH_SYS_ARCH_H__ 3 4 #include <stddef.h> 5 #include "arch/cc.h" 6 #include <thread.h> 7 #include <mbox.h> 8 9 typedef struct semaphore *sys_sem_t; 10 typedef struct mailbox *sys_mbox_t; 11 typedef struct thread *sys_thread_t; 12 13 static inline void sys_sem_signal(sys_sem_t *sem) 14 { 15 if (!!sem) 16 sem_up(*sem); 17 } 18 19 #define sys_now ms_timer 20 21 #define SYS_MBOX_NULL NULL 22 #define SYS_SEM_NULL NULL 23 24 extern void __compile_time_error(void); 25 26 #define SYS_ARCH_OP(var, val, inc, add) \ 27 do { \ 28 if (__builtin_constant_p(val) && (val) == 1) { \ 29 switch (sizeof(var)) { \ 30 case 1: \ 31 asm volatile(inc "b %0" : "+m" (var)); \ 32 break; \ 33 case 2: \ 34 asm volatile(inc "w %0" : "+m" (var)); \ 35 break; \ 36 case 4: \ 37 asm volatile(inc "l %0" : "+m" (var)); \ 38 break; \ 39 default: \ 40 __compile_time_error(); \ 41 break; \ 42 } \ 43 } else { \ 44 switch (sizeof(var)) { \ 45 case 1: \ 46 asm volatile(add "b %1,%0" : "+m" (var) : "ri" (val)); \ 47 break; \ 48 case 2: \ 49 asm volatile(add "w %1,%0" : "+m" (var) : "ri" (val)); \ 50 break; \ 51 case 4: \ 52 asm volatile(add "l %1,%0" : "+m" (var) : "ri" (val)); \ 53 break; \ 54 default: \ 55 __compile_time_error(); \ 56 break; \ 57 } \ 58 } \ 59 } while (0) 60 61 static inline struct sys_timeouts *sys_arch_timeouts(void) 62 { 63 return (struct sys_timeouts *)¤t()->pvt; 64 } 65 66 #define SYS_ARCH_INC(var, val) SYS_ARCH_OP(var, val, "inc", "add") 67 #define SYS_ARCH_DEC(var, val) SYS_ARCH_OP(var, val, "dec", "sub") 68 69 #define SYS_ARCH_GET(var, ret) \ 70 do { \ 71 volatile __typeof__(var) * const __varp = &(var); \ 72 ret = *__varp; \ 73 } while (0) 74 75 #define SYS_ARCH_SET(var, val) \ 76 do { \ 77 volatile __typeof__(var) * const __varp = &(var); \ 78 *__varp = val; \ 79 } while (0) 80 81 #define SYS_ARCH_DECL_PROTECT(VAR) irq_state_t VAR 82 #define SYS_ARCH_PROTECT(VAR) VAR = irq_save() 83 #define SYS_ARCH_UNPROTECT(VAR) irq_restore(VAR) 84 85 #endif /* __LWIP_ARCH_SYS_ARCH_H__ */ 86
