65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
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#include <u.h>
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#include <lib9.h>
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// from kernel's mem.h
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#define MiB (1024*1024)
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#define TSTKTOP (0x00007ffffffff000ull)
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#define USTKSIZE (16*MiB) /* size of user stack */
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#define USTKTOP (TSTKTOP-USTKSIZE) /* end of new stack in sysexec */
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enum {
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Njmps = 10000
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};
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void foo(void);
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void
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main(void)
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{
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int i, njmp;
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int fail = 0;
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jmp_buf label;
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njmp = 0;
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while((njmp = setjmp(label)) < Njmps)
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longjmp(label, njmp+1);
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for(i = 0; i < nelem(label); i++)
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fprint(2, "label[%d] = %p\n", i, label[i]);
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fprint(2, "main: %p foo: %p\n", main, foo);
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if(njmp != Njmps){
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print("error: njmp = %d\n", njmp);
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fail++;
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}
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if(label[JMPBUFPC] < (uintptr_t)main){
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print("error: label[JMPBUFPC] = %#p\n", label[JMPBUFPC]);
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fail++;
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}
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if(label[JMPBUFPC] > (uintptr_t)foo){
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print("error: label[JMPBUFPC] = %#p\n", label[JMPBUFPC]);
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fail++;
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}
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if(label[JMPBUFSP] > (uintptr_t)&label[nelem(label)]){
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print("error: label[JMPBUFSP] (%#p) is greater then &label[nelem(label)] (%#p) \n", label[JMPBUFPC], &label[nelem(label)]);
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fail++;
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}
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if(label[JMPBUFSP] < USTKTOP-USTKSIZE){
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print("error: label[JMPBUFSP] (%#p) is lower then USTKTOP-USTKSIZE \n", label[JMPBUFSP]);
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fail++;
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}
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if(fail == 0){
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print("PASS\n");
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exits("PASS");
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}
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print("FAIL\n");
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exits("FAIL");
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}
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void
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foo(void)
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{
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}
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