micropython/py/nlr.h at musl · dominikznidar/micropython

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// non-local return

// exception handling, basically a stack of setjmp/longjmp buffers

#include <limits.h>

//#ifndef __WORDSIZE

//#error __WORDSIZE needs to be defined

//#endif

typedef struct _nlr_buf_t nlr_buf_t;

struct _nlr_buf_t {

// the entries here must all be machine word size

nlr_buf_t *prev;

void *ret_val;

#if __WORDSIZE == 32

void *regs[6];

#elif __WORDSIZE == 64

void *regs[8];

#else

// hack for thumb

void *regs[10];

//#error Unsupported __WORDSIZE

#endif

};

unsigned int nlr_push(nlr_buf_t *);

void nlr_pop(void);

void nlr_jump(void *val) __attribute__((noreturn));