ref: babf901b4a508c3ec5d1f89655f10377bbdf9637
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)