22 lines
596 B
C
22 lines
596 B
C
// W65816 setjmp/longjmp — saves SP, return address (24-bit), and DP.
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// jmp_buf is 8 bytes of opaque storage.
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#ifndef _SETJMP_H
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#define _SETJMP_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef unsigned char jmp_buf[8];
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// `returns_twice` tells clang that setjmp may "return" a second time
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// (via longjmp) — without this the optimizer may treat env as
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// uninitialized after the call and constant-fold reads to 0.
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int setjmp(jmp_buf env) __attribute__((returns_twice));
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void longjmp(jmp_buf env, int val) __attribute__((noreturn));
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#ifdef __cplusplus
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}
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#endif
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#endif
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