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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
commit43a123c1ae6613b3efeed291fa552ecd909d3acf (patch)
treefd92518b7024bc74031f78a1cf9e454b65e73665 /test/codegen/retpoline.go
parentInitial commit. (diff)
downloadgolang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz
golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/codegen/retpoline.go')
-rw-r--r--test/codegen/retpoline.go42
1 files changed, 42 insertions, 0 deletions
diff --git a/test/codegen/retpoline.go b/test/codegen/retpoline.go
new file mode 100644
index 0000000..a04a005
--- /dev/null
+++ b/test/codegen/retpoline.go
@@ -0,0 +1,42 @@
+// +build amd64
+// asmcheck -gcflags=-spectre=ret
+
+package codegen
+
+func CallFunc(f func()) {
+ // amd64:`CALL\truntime.retpoline`
+ f()
+}
+
+func CallInterface(x interface{ M() }) {
+ // amd64:`CALL\truntime.retpoline`
+ x.M()
+}
+
+// Check to make sure that jump tables are disabled
+// when retpoline is on. See issue 57097.
+func noJumpTables(x int) int {
+ switch x {
+ case 0:
+ return 0
+ case 1:
+ return 1
+ case 2:
+ return 2
+ case 3:
+ return 3
+ case 4:
+ return 4
+ case 5:
+ return 5
+ case 6:
+ return 6
+ case 7:
+ return 7
+ case 8:
+ return 8
+ case 9:
+ return 9
+ }
+ return 10
+}