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authorPalmer Dabbelt <palmer@dabbelt.com>2017-07-10 18:07:09 -0700
committerPalmer Dabbelt <palmer@dabbelt.com>2017-09-26 15:26:48 -0700
commite2c0cdfba7f69925afc92b20cd9835d81e11a4f1 (patch)
tree2c501638321da451423b385652183d60da02db5c /arch/riscv/kernel/vdso/vdso.S
parent07037db5d479f90377c998259a4f9a469c404edf (diff)
RISC-V: User-facing API
This patch contains code that is in some way visible to the user: including via system calls, the VDSO, module loading and signal handling. It also contains some generic code that is ABI visible. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
Diffstat (limited to 'arch/riscv/kernel/vdso/vdso.S')
-rw-r--r--arch/riscv/kernel/vdso/vdso.S27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/riscv/kernel/vdso/vdso.S b/arch/riscv/kernel/vdso/vdso.S
new file mode 100644
index 000000000000..7055de5f9174
--- /dev/null
+++ b/arch/riscv/kernel/vdso/vdso.S
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2014 Regents of the University of California
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <asm/page.h>
+
+ __PAGE_ALIGNED_DATA
+
+ .globl vdso_start, vdso_end
+ .balign PAGE_SIZE
+vdso_start:
+ .incbin "arch/riscv/kernel/vdso/vdso.so"
+ .balign PAGE_SIZE
+vdso_end:
+
+ .previous