[kvm-unit-tests PATCH v3 9/9] s390x: snippets: Define all things that are needed to link the lib

Janosch Frank
2021-10-07T08:52:24Z

Let's just define all of the needed things so we can link libcflat.

A significant portion of the lib won't work, like printing and
allocation but we can still use things like memset() which already
improves our lives significantly.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
---
s390x/snippets/c/cstart.S | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/s390x/snippets/c/cstart.S b/s390x/snippets/c/cstart.S
index 031a6b83..2d397669 100644
--- a/s390x/snippets/c/cstart.S
+++ b/s390x/snippets/c/cstart.S
@@ -20,6 +20,20 @@ start:
lghi %r15, stackptr
sam64
brasl %r14, main
+/*
+ * Defining things that the linker needs to link in libcflat and make
+ * them result in sigp stop if called.
+ */
+.globl sie_exit
+.globl sie_entry
+.globl smp_cpu_setup_state
+.globl ipl_args
+.globl auxinfo
+sie_exit:
+sie_entry:
+smp_cpu_setup_state:
+ipl_args:
+auxinfo:
/* For now let's only use cpu 0 in snippets so this will always work. */
xgr %r0, %r0
sigp %r2, %r0, SIGP_STOP
--
2.30.2