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/*
* BTI vs PACIASP
*/
#include "bti-crt.inc.c"
static void skip2_sigill(int sig, siginfo_t *info, ucontext_t *uc)
{
uc->uc_mcontext.pc += 8;
uc->uc_mcontext.pstate = 1;
}
#define BTYPE_1() \
asm("mov %0,#1; adr x16, 1f; br x16; 1: hint #25; mov %0,#0" \
: "=r"(skipped) : : "x16", "x30")
#define BTYPE_2() \
asm("mov %0,#1; adr x16, 1f; blr x16; 1: hint #25; mov %0,#0" \
: "=r"(skipped) : : "x16", "x30")
#define BTYPE_3() \
asm("mov %0,#1; adr x15, 1f; br x15; 1: hint #25; mov %0,#0" \
: "=r"(skipped) : : "x15", "x30")
#define TEST(WHICH, EXPECT) \
do { WHICH(); fail += skipped ^ EXPECT; } while (0)
int main()
{
int fail = 0;
int skipped;
/* Signal-like with SA_SIGINFO. */
signal_info(SIGILL, skip2_sigill);
/* With SCTLR_EL1.BT0 set, PACIASP is not compatible with type=3. */
TEST(BTYPE_1, 0);
TEST(BTYPE_2, 0);
TEST(BTYPE_3, 1);
return fail;
}
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