diff options
| -rw-r--r-- | src/thread/s390x/clone.s | 6 | ||||
| -rw-r--r-- | src/thread/s390x/syscall_cp.s | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/thread/s390x/clone.s b/src/thread/s390x/clone.s index 577748e..2125f20 100644 --- a/src/thread/s390x/clone.s +++ b/src/thread/s390x/clone.s @@ -17,6 +17,9 @@ __clone: # if (!tid) syscall(SYS_exit, a(d)); # return tid; + # preserve call-saved register used as syscall arg + stg %r6, 48(%r15) + # create initial stack frame for new thread nill %r3, 0xfff8 aghi %r3, -160 @@ -35,6 +38,9 @@ __clone: lg %r6, 160(%r15) svc 120 + # restore call-saved register + lg %r6, 48(%r15) + # if error or if we're the parent, return ltgr %r2, %r2 bnzr %r14 diff --git a/src/thread/s390x/syscall_cp.s b/src/thread/s390x/syscall_cp.s index c1da40d..d094cbf 100644 --- a/src/thread/s390x/syscall_cp.s +++ b/src/thread/s390x/syscall_cp.s @@ -14,6 +14,7 @@ __cp_begin: icm %r2, 15, 0(%r2) jne __cp_cancel + stg %r6, 48(%r15) stg %r7, 56(%r15) lgr %r1, %r3 lgr %r2, %r4 @@ -26,6 +27,7 @@ __cp_begin: __cp_end: lg %r7, 56(%r15) + lg %r6, 48(%r15) br %r14 __cp_cancel: |