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// RUN: %clang_cc1 -triple thumbv8m.base-none-eabi -mcmse -verify %s
typedef void (*callback_ns_1t)() __attribute__((cmse_nonsecure_call));
typedef void (*callback_1t)();
typedef void (*callback_ns_2t)() __attribute__((cmse_nonsecure_call));
typedef void (*callback_2t)();
void foo(callback_ns_1t nsfptr, // expected-error{{functions may not be declared with 'cmse_nonsecure_call' attribute}}
callback_1t fptr) __attribute__((cmse_nonsecure_call))
{
callback_1t fp1 = nsfptr; // expected-warning{{incompatible function pointer types initializing 'callback_1t'}}
callback_ns_1t fp2 = fptr; // expected-warning{{incompatible function pointer types initializing 'callback_ns_1t'}}
callback_2t fp3 = fptr;
callback_ns_2t fp4 = nsfptr;
}
static void bar() __attribute__((cmse_nonsecure_entry)) // expected-warning{{'cmse_nonsecure_entry' cannot be applied to functions with internal linkage}}
{
}
typedef void nonsecure_fn_t(int) __attribute__((cmse_nonsecure_call));
extern nonsecure_fn_t baz; // expected-error{{functions may not be declared with 'cmse_nonsecure_call' attribute}}
int v0 __attribute__((cmse_nonsecure_call)); // expected-warning {{'cmse_nonsecure_call' only applies to function types; type here is 'int'}}
int v1 __attribute__((cmse_nonsecure_entry)); // expected-warning {{'cmse_nonsecure_entry' attribute only applies to functions}}
void fn0() __attribute__((cmse_nonsecure_entry));
void fn1() __attribute__((cmse_nonsecure_entry(1))); // expected-error {{'cmse_nonsecure_entry' attribute takes no arguments}}
typedef void (*fn2_t)() __attribute__((cmse_nonsecure_call("abc"))); // expected-error {{'cmse_nonsecure_call' attribute takes no argument}}
union U { unsigned n; char b[4]; } u;
union U xyzzy() __attribute__((cmse_nonsecure_entry)) {
return u; // expected-warning {{passing union across security boundary via return value may leak information}}
}
void (*fn2)(int, union U) __attribute__((cmse_nonsecure_call));
void (*fn3)() __attribute__ ((cmse_nonsecure_call));
struct S {
int t;
union {
char b[4];
unsigned w;
};
} s;
void qux() {
fn2(1,
u); // expected-warning {{passing union across security boundary via parameter 1 may leak information}}
fn3(
u, // expected-warning {{passing union across security boundary via parameter 0 may leak information}}
1,
s); // expected-warning {{passing union across security boundary via parameter 2 may leak information}}
}
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