mirror of
https://github.com/DynamoRIO/dynamorio.git
synced 2026-10-12 02:02:04 +00:00
Joshua Warburton
73b6ca02c3
This patch configures the github CI to spawn 3 AArch64 precommit jobs without sve, with sve 256 and with sve 128. This is accomplished by a small python program which makes a call to set the vector length and an update to the job matrix to spawn the appropriate jobs.
35 lines
887 B
Python
Executable File
35 lines
887 B
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
"""
|
|
Print the vector length in the current context
|
|
"""
|
|
|
|
import ctypes
|
|
import sys
|
|
|
|
# These constants must match linux/prctl.h
|
|
PR_SVE_GET_VL = 51
|
|
PR_SVE_VL_LEN_MASK = 0xffff
|
|
|
|
def get_vector_length():
|
|
"""
|
|
Use Prctl(2) to set the process tree's sve vector length. See
|
|
https://man7.org/linux/man-pages/man2/prctl.2.html for more details
|
|
"""
|
|
libc = ctypes.cdll.LoadLibrary('libc.so.6')
|
|
return_code = libc.prctl(
|
|
PR_SVE_GET_VL)
|
|
if return_code < 0:
|
|
print(f'Failed to get VL, rc: {return_code}')
|
|
sys.exit(1)
|
|
print((return_code & PR_SVE_VL_LEN_MASK) * 8)
|
|
|
|
if __name__ == '__main__':
|
|
if any(arg in ["--help", "-h"] for arg in sys.argv) or len(sys.argv) > 1:
|
|
print(f"usage: {sys.argv[0]}")
|
|
print("\nGets the current vector length of this process tree")
|
|
sys.exit(0)
|
|
|
|
get_vector_length()
|
|
|