Since the tests are built with '-mgeneral-regs-only', clang-18 tends to
push 'q' registers out of the scope and hence, the following error is
observed:
arm/fpu.c:281:3: error: instruction requires: fp-armv8
281 | fpu_reg_write(*indata);
| ^
arm/fpu.c:74:15: note: expanded from macro 'fpu_reg_write'
74 | asm volatile("ldp q0, q1, [%0], #32\n\t" \
| ^
<inline asm>:1:2: note: instantiated into assembly here
1 | ldp q0, q1, [x8], #32
| ^
Hence, explicitly add fp support where these registers are used.
Reported-by: Andrew Jones <andrew.jones@xxxxxxxxx>
Signed-off-by: Raghavendra Rao Ananta <rananta@xxxxxxxxxx>
---
arm/fpu.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arm/fpu.c b/arm/fpu.c
index 587b6ea3..f327a349 100644
--- a/arm/fpu.c
+++ b/arm/fpu.c
@@ -38,7 +38,8 @@ static inline bool arch_collect_entropy(uint64_t *random)
#define fpu_reg_read(val) \
({ \
uint64_t *__val = (val); \
- asm volatile("stp q0, q1, [%0], #32\n\t" \
+ asm volatile(".arch_extension fp\n" \
+ "stp q0, q1, [%0], #32\n\t" \
"stp q2, q3, [%0], #32\n\t" \
"stp q4, q5, [%0], #32\n\t" \
"stp q6, q7, [%0], #32\n\t" \
@@ -71,7 +72,8 @@ static inline bool arch_collect_entropy(uint64_t *random)
#define fpu_reg_write(val) \
do { \
uint64_t *__val = (val); \
- asm volatile("ldp q0, q1, [%0], #32\n\t" \
+ asm volatile(".arch_extension fp\n" \
+ "ldp q0, q1, [%0], #32\n\t" \
"ldp q2, q3, [%0], #32\n\t" \
"ldp q4, q5, [%0], #32\n\t" \
"ldp q6, q7, [%0], #32\n\t" \
--
2.47.0.105.g07ac214952-goog
