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/linux/tools/testing/selftests/arm64/signal/testcases/
H A Dgcs_prot_none_fault.c16 static uint64_t *gcs_page; variable
27 gcs_page = (void *)syscall(__NR_map_shadow_stack, 0, in alloc_gcs()
29 if (gcs_page == MAP_FAILED) { in alloc_gcs()
41 fprintf(stderr, "Read value 0x%lx\n", gcs_page[0]); in gcs_prot_none_fault_trigger()
43 if (mprotect(gcs_page, sysconf(_SC_PAGE_SIZE), PROT_NONE) != 0) { in gcs_prot_none_fault_trigger()
50 fprintf(stderr, "Read value after mprotect(PROT_NONE) 0x%lx\n", gcs_page[0]); in gcs_prot_none_fault_trigger()