summaryrefslogtreecommitdiffstats
path: root/arch/sparc/vdso/vdso32
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /arch/sparc/vdso/vdso32
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sparc/vdso/vdso32')
-rw-r--r--arch/sparc/vdso/vdso32/.gitignore2
-rw-r--r--arch/sparc/vdso/vdso32/vclock_gettime.c22
-rw-r--r--arch/sparc/vdso/vdso32/vdso-note.S12
-rw-r--r--arch/sparc/vdso/vdso32/vdso32.lds.S26
4 files changed, 62 insertions, 0 deletions
diff --git a/arch/sparc/vdso/vdso32/.gitignore b/arch/sparc/vdso/vdso32/.gitignore
new file mode 100644
index 000000000..516738484
--- /dev/null
+++ b/arch/sparc/vdso/vdso32/.gitignore
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+vdso32.lds
diff --git a/arch/sparc/vdso/vdso32/vclock_gettime.c b/arch/sparc/vdso/vdso32/vclock_gettime.c
new file mode 100644
index 000000000..d7f99e674
--- /dev/null
+++ b/arch/sparc/vdso/vdso32/vclock_gettime.c
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2017 Oracle and/or its affiliates. All rights reserved.
+ */
+
+#define BUILD_VDSO32
+
+#ifdef CONFIG_SPARC64
+
+/*
+ * in case of a 32 bit VDSO for a 64 bit kernel fake a 32 bit kernel
+ * configuration
+ */
+#undef CONFIG_64BIT
+#undef CONFIG_SPARC64
+#define BUILD_VDSO32_64
+#define CONFIG_32BIT
+#undef CONFIG_QUEUED_RWLOCKS
+#undef CONFIG_QUEUED_SPINLOCKS
+
+#endif
+
+#include "../vclock_gettime.c"
diff --git a/arch/sparc/vdso/vdso32/vdso-note.S b/arch/sparc/vdso/vdso32/vdso-note.S
new file mode 100644
index 000000000..e234983cf
--- /dev/null
+++ b/arch/sparc/vdso/vdso32/vdso-note.S
@@ -0,0 +1,12 @@
+/*
+ * This supplies .note.* sections to go into the PT_NOTE inside the vDSO
+ * text. Here we can supply some information useful to userland.
+ */
+
+#include <linux/uts.h>
+#include <linux/version.h>
+#include <linux/elfnote.h>
+
+ELFNOTE_START(Linux, 0, "a")
+ .long LINUX_VERSION_CODE
+ELFNOTE_END
diff --git a/arch/sparc/vdso/vdso32/vdso32.lds.S b/arch/sparc/vdso/vdso32/vdso32.lds.S
new file mode 100644
index 000000000..218930fdf
--- /dev/null
+++ b/arch/sparc/vdso/vdso32/vdso32.lds.S
@@ -0,0 +1,26 @@
+/*
+ * Linker script for sparc32 vDSO
+ * We #include the file to define the layout details.
+ *
+ * This file defines the version script giving the user-exported symbols in
+ * the DSO.
+ */
+
+#define BUILD_VDSO32
+#include "../vdso-layout.lds.S"
+
+/*
+ * This controls what userland symbols we export from the vDSO.
+ */
+VERSION {
+ LINUX_2.6 {
+ global:
+ clock_gettime;
+ __vdso_clock_gettime;
+ __vdso_clock_gettime_stick;
+ gettimeofday;
+ __vdso_gettimeofday;
+ __vdso_gettimeofday_stick;
+ local: *;
+ };
+}