ref: 1018d7a7091fd5e0433f501a3474cdc3fec322cc
dir: /Linux/power/include/emu.h/
/* * system- and machine-specific declarations for emu: * floating-point save and restore, signal handling primitive, and * implementation of the current-process variable `up'. */ /* * This structure must agree with FPsave and FPrestore asm routines */ typedef struct FPU FPU; struct FPU { uchar env[18*8]; }; /* * Later versions of Linux seemed to need large stack for gethostbyname() * so we had this at 128k, which is excessive. More recently, we've * reduced it again after testing stack usage by gethostbyname. */ #define KSTACK (16 * 1024) #ifndef USE_PTHREADS static __inline Proc *getup(void) { Proc *p; __asm__( "mr %0, 1" : "=r" (p)); return *(Proc **)((unsigned long)p & ~(KSTACK - 1)); } #else extern Proc* getup(void); #endif #define up (getup()) typedef sigjmp_buf osjmpbuf; #define ossetjmp(buf) sigsetjmp(buf, 1)