#ifdef __cplusplus
extern "C" {
#endif
+ extern int arch_prctl (int, unsigned long int *);
extern int prctl(int, unsigned long, unsigned long, unsigned long, unsigned long);
#ifdef __cplusplus
}
#endif
int main (void) {
+ #ifdef __x86_64__
+ # ifdef __LP64__
+ # define ARCH_GET_UNTAG_MASK 0x4001
+ # define LAM_U57_MASK (0x3fULL << 57)
+ unsigned long mask = 0;
+ if (arch_prctl(ARCH_GET_UNTAG_MASK, &mask) != 0)
+ return 1;
+ if (mask != ~LAM_U57_MASK)
+ return 1;
+ return 0;
+ # endif
+ return 1;
+ #else
#define PR_SET_TAGGED_ADDR_CTRL 55
#define PR_GET_TAGGED_ADDR_CTRL 56
#define PR_TAGGED_ADDR_ENABLE (1UL << 0)
|| !prctl(PR_GET_TAGGED_ADDR_CTRL, 0, 0, 0, 0))
return 1;
return 0;
+ #endif
}
}] {
return 0;
setenv HWASAN_OPTIONS "random_tags=0"
+ if [istarget x86_64-*-*] {
+ set target_hwasan_flags "-mlam=u57"
+ }
+
set link_flags ""
if ![is_remote host] {
if [info exists TOOL_OPTIONS] {
if [info exists ALWAYS_CXXFLAGS] {
set hwasan_saved_ALWAYS_CXXFLAGS $ALWAYS_CXXFLAGS
set ALWAYS_CXXFLAGS [concat "{ldflags=$link_flags}" $ALWAYS_CXXFLAGS]
- set ALWAYS_CXXFLAGS [concat "{additional_flags=-fsanitize=hwaddress --param hwasan-random-frame-tag=0 -g $include_flags}" $ALWAYS_CXXFLAGS]
+ set ALWAYS_CXXFLAGS [concat "{additional_flags=-fsanitize=hwaddress $target_hwasan_flags --param hwasan-random-frame-tag=0 -g $include_flags}" $ALWAYS_CXXFLAGS]
} else {
if [info exists TEST_ALWAYS_FLAGS] {
- set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=hwaddress --param hwasan-random-frame-tag=0 -g $include_flags $TEST_ALWAYS_FLAGS"
+ set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=hwaddress $target_hwasan_flags --param hwasan-random-frame-tag=0 -g $include_flags $TEST_ALWAYS_FLAGS"
} else {
- set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=hwaddress --param hwasan-random-frame-tag=0 -g $include_flags"
+ set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=hwaddress $target_hwasan_flags --param hwasan-random-frame-tag=0 -g $include_flags"
}
}
}