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Diffstat (limited to 'lib/mlibc/tests/posix/sigaltstack.c')
-rw-r--r--lib/mlibc/tests/posix/sigaltstack.c55
1 files changed, 0 insertions, 55 deletions
diff --git a/lib/mlibc/tests/posix/sigaltstack.c b/lib/mlibc/tests/posix/sigaltstack.c
deleted file mode 100644
index bebcc30..0000000
--- a/lib/mlibc/tests/posix/sigaltstack.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include <assert.h>
-#include <setjmp.h>
-#include <signal.h>
-#include <stdlib.h>
-
-static jmp_buf env;
-static char *sigStack;
-
-static void sig_handler(int sig, siginfo_t *info, void *ctx) {
- (void)sig;
- (void)info;
- (void)ctx;
-
- longjmp(env, 1);
-}
-
-int main() {
- if (setjmp(env)) {
- free(sigStack);
- return 0;
- }
-
- sigStack = malloc(SIGSTKSZ);
-
- stack_t ss;
- ss.ss_sp = sigStack;
- ss.ss_size = SIGSTKSZ;
- ss.ss_flags = 0;
-
- assert(!sigaltstack(&ss, NULL));
-
- struct sigaction sa;
- sigemptyset(&sa.sa_mask);
- sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
- sa.sa_sigaction = sig_handler;
-
- assert(!sigaction(SIGSEGV, &sa, NULL));
-
- // This is used to trash the stack to ensure sigaltstack actually switched stacks.
-#if defined(__x86_64__)
- asm volatile ("mov $0, %rsp\n"
- "\t" "push $0");
-#elif defined(__i386__)
- asm volatile ("mov $0, %esp\n"
- "\t" "push $0");
-#elif defined(__aarch64__)
- asm volatile ("mov sp, %0\n"
- "\t" "stp x0, x1, [sp, #-16]!" :: "r"((uint64_t)0));
-#elif defined(__riscv) && __riscv_xlen == 64
- asm volatile ("li sp, 0\n"
- "\t" "sd zero, 0(sp)");
-#else
-# error Unknown architecture
-#endif
-}