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39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* SPDX-License-Identifier: MIT */
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/* Copyright (c) 2022 Winlin */
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#include <stdio.h>
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#include <setjmp.h>
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/* We define the jmpbuf, because the system's is different in different OS */
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typedef struct _st_jmp_buf {
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/*
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* OS CPU SIZE
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* Darwin __amd64__/__x86_64__ long[8]
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* Darwin __aarch64__ long[22]
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* Linux __i386__ long[6]
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* Linux __amd64__/__x86_64__ long[8]
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* Linux __aarch64__ long[22]
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* Linux __arm__ long[16]
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* Linux __mips__/__mips64 long[13]
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* Linux __riscv long[14]
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* Linux __loongarch64 long[12]
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* Cygwin64 __amd64__/__x86_64__ long[8]
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*/
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long __jmpbuf[22];
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} _st_jmp_buf_t[1];
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int main(int argc, char** argv)
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{
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jmp_buf ctx = {0};
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int r0 = setjmp(ctx);
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int nn_jb = sizeof(ctx);
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printf("jmp_buf: r0=%d, sizeof(jmp_buf)=%d (unsigned long long [%d])\n", r0, nn_jb, nn_jb/8);
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_st_jmp_buf_t ctx2 = {0};
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int r1 = sizeof(_st_jmp_buf_t);
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int r2 = sizeof(ctx2);
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printf("_st_jmp_buf_t: sizeof(_st_jmp_buf_t)=%d/%d (unsigned long long [%d])\n", r1, r2, r2/8);
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return 0;
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}
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