ref: c116550e6a41572796e4db65e4f6acbcb3d9d6f8
dir: /Linux/arm/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[28]; }; #ifndef USE_PTHREADS #define KSTACK (16 * 1024) /* must be power of two */ static __inline Proc *getup(void) { Proc *p; __asm__( "mov %0, %%sp;" : "=r" (p) ); return *(Proc **)((uintptr)p & ~(KSTACK - 1)); } #else #define KSTACK (32 * 1024) /* need not be power of two */ extern Proc* getup(void); #endif #define up (getup()) typedef sigjmp_buf osjmpbuf; #define ossetjmp(buf) sigsetjmp(buf, 1)