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Add a test for float registers across setjmp/logjmp. 

Change-Id: I17cc056b185755e0b91de096b5ceefee4f4e0b3a
This commit is contained in:
Elliott Hughes 2015-01-26 20:52:34 -08:00
parent 5c7964c5f1
commit 87dd503018
1 changed files with 51 additions and 0 deletions
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51
tests/setjmp_test.cpp
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@ -161,3 +161,54 @@ TEST(setjmp, sigsetjmp_1_signal_mask) {
}
sigprocmask(SIG_SETMASK, &ss.original, NULL);
}
#if defined(__aarch64__)
#define SET_FREG(n, v) asm volatile("fmov d"#n ", "#v : : : "d"#n)
#define CLEAR_FREG(n) asm volatile("fmov d"#n ", xzr" : : : "d"#n)
#define SET_FREGS \
SET_FREG(8, 8.0); SET_FREG(9, 9.0); SET_FREG(10, 10.0); SET_FREG(11, 11.0); \
SET_FREG(12, 12.0); SET_FREG(13, 13.0); SET_FREG(14, 14.0); SET_FREG(15, 15.0);
#define CLEAR_FREGS \
CLEAR_FREG(8); CLEAR_FREG(9); CLEAR_FREG(10); CLEAR_FREG(11); \
CLEAR_FREG(12); CLEAR_FREG(13); CLEAR_FREG(14); CLEAR_FREG(15);
#define GET_FREG(n) ({ double _r; asm volatile("fmov %0, d"#n : "=r"(_r) : :); _r; })
#define CHECK_FREGS \
EXPECT_EQ(8.0, GET_FREG(8)); EXPECT_EQ(9.0, GET_FREG(9)); \
EXPECT_EQ(10.0, GET_FREG(10)); EXPECT_EQ(11.0, GET_FREG(11)); \
EXPECT_EQ(12.0, GET_FREG(12)); EXPECT_EQ(13.0, GET_FREG(13)); \
EXPECT_EQ(14.0, GET_FREG(14)); EXPECT_EQ(15.0, GET_FREG(15));
#elif defined(__arm__)
#define SET_FREG(n, v) \
({ const double _v{v}; asm volatile("fcpyd d"#n ", %P0" : : "w"(_v) : "d"#n); })
#define SET_FREGS \
SET_FREG(8, 8); SET_FREG(9, 9); SET_FREG(10, 10); SET_FREG(11, 11); \
SET_FREG(12, 12); SET_FREG(13, 13); SET_FREG(14, 14); SET_FREG(15, 15);
#define CLEAR_FREGS \
SET_FREG(8, 0); SET_FREG(9, 0); SET_FREG(10, 0); SET_FREG(11, 0); \
SET_FREG(12, 0); SET_FREG(13, 0); SET_FREG(14, 0); SET_FREG(15, 0);
#define GET_FREG(n) ({ double _r; asm volatile("fcpyd %P0, d"#n : "=w"(_r) : :); _r;})
#define CHECK_FREGS \
EXPECT_EQ(8.0, GET_FREG(8)); EXPECT_EQ(9.0, GET_FREG(9)); \
EXPECT_EQ(10.0, GET_FREG(10)); EXPECT_EQ(11.0, GET_FREG(11)); \
EXPECT_EQ(12.0, GET_FREG(12)); EXPECT_EQ(13.0, GET_FREG(13)); \
EXPECT_EQ(14.0, GET_FREG(14)); EXPECT_EQ(15.0, GET_FREG(15));
#else
/* The other architectures don't save/restore fp registers. */
#define SET_FREGS
#define CLEAR_FREGS
#define CHECK_FREGS
#endif
TEST(setjmp, setjmp_fp_registers) {
int value;
jmp_buf jb;
SET_FREGS;
if ((value = setjmp(jb)) == 0) {
CLEAR_FREGS;
longjmp(jb, 123);
FAIL(); // Unreachable.
} else {
ASSERT_EQ(123, value);
CHECK_FREGS;
}
}