25 lines
546 B
C
25 lines
546 B
C
// non-local return
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// exception handling, basically a stack of setjmp/longjmp buffers
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#include <limits.h>
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typedef struct _nlr_buf_t nlr_buf_t;
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struct _nlr_buf_t {
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// the entries here must all be machine word size
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nlr_buf_t *prev;
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void *ret_val;
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#if defined(__i386__)
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void *regs[6];
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#elif defined(__x86_64__)
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void *regs[8];
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#elif defined(__thumb2__)
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void *regs[10];
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#else
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#error Unknown arch in nlr.h
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#endif
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};
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unsigned int nlr_push(nlr_buf_t *);
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void nlr_pop(void);
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void nlr_jump(void *val) __attribute__((noreturn));
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