58 lines · c
1// RUN: %clang_cc1 -triple thumbv8m.base-none-eabi -mcmse -Wno-strict-prototypes -verify %s2 3typedef void (*callback_ns_1t)(void) __attribute__((cmse_nonsecure_call));4typedef void (*callback_1t)(void);5typedef void (*callback_ns_2t)(void) __attribute__((cmse_nonsecure_call));6typedef void (*callback_2t)(void);7 8void foo(callback_ns_1t nsfptr, // expected-error{{functions may not be declared with 'cmse_nonsecure_call' attribute}}9 callback_1t fptr) __attribute__((cmse_nonsecure_call))10{11 callback_1t fp1 = nsfptr; // expected-error{{incompatible function pointer types initializing 'callback_1t'}}12 callback_ns_1t fp2 = fptr; // expected-error{{incompatible function pointer types initializing 'callback_ns_1t'}}13 callback_2t fp3 = fptr;14 callback_ns_2t fp4 = nsfptr;15}16 17static void bar(void) __attribute__((cmse_nonsecure_entry)) // expected-warning{{'cmse_nonsecure_entry' cannot be applied to functions with internal linkage}}18{19}20 21typedef void nonsecure_fn_t(int) __attribute__((cmse_nonsecure_call));22extern nonsecure_fn_t baz; // expected-error{{functions may not be declared with 'cmse_nonsecure_call' attribute}}23 24int v0 __attribute__((cmse_nonsecure_call)); // expected-warning {{'cmse_nonsecure_call' only applies to function types; type here is 'int'}}25int v1 __attribute__((cmse_nonsecure_entry)); // expected-warning {{'cmse_nonsecure_entry' attribute only applies to functions}}26 27void fn0(void) __attribute__((cmse_nonsecure_entry));28void fn1(void) __attribute__((cmse_nonsecure_entry(1))); // expected-error {{'cmse_nonsecure_entry' attribute takes no arguments}}29 30typedef void (*fn2_t)(void) __attribute__((cmse_nonsecure_call("abc"))); // expected-error {{'cmse_nonsecure_call' attribute takes no argument}}31 32union U { unsigned n; char b[4]; } u;33 34union U xyzzy(void) __attribute__((cmse_nonsecure_entry)) {35 return u; // expected-warning {{passing union across security boundary via return value may leak information}}36}37 38void (*fn2)(int, union U) __attribute__((cmse_nonsecure_call));39void (*fn3)() __attribute__ ((cmse_nonsecure_call));40 41struct S {42 int t;43 union {44 char b[4];45 unsigned w;46 };47} s;48 49void qux(void) {50 fn2(1,51 u); // expected-warning {{passing union across security boundary via parameter 1 may leak information}}52 53 fn3(54 u, // expected-warning {{passing union across security boundary via parameter 0 may leak information}}55 1,56 s); // expected-warning {{passing union across security boundary via parameter 2 may leak information}}57}58