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authorSang-Heon Jeon <ekffu200098@gmail.com>2026-08-24 01:18:14 +0900
committerJulia Lawall <Julia.Lawall@inria.fr>2026-08-23 22:12:11 +0200
commit2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c (patch)
treedcc4da1d99f17541c5590ac63c77da4bf372a4ab /arch/riscv/lib/ashrdi3.S
downloadlinux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.tar.gz
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coccinelle: alloc_cast: drop removed allocatorsgrafted
- pci_alloc_consistent() and pci_zalloc_consistent() were removed by commit 7968778914e5 ("PCI: Remove the deprecated "pci-dma-compat.h" API") - kmem_alloc() was removed by commit f078d4ea8276 ("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit 10634530f7ba ("xfs: convert kmem_zalloc() to kzalloc()") - kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers") So drop them from the rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Diffstat (limited to 'arch/riscv/lib/ashrdi3.S')
-rw-r--r--arch/riscv/lib/ashrdi3.S36
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/riscv/lib/ashrdi3.S b/arch/riscv/lib/ashrdi3.S
new file mode 100644
index 000000000..426de0946
--- /dev/null
+++ b/arch/riscv/lib/ashrdi3.S
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/**
+ * Adopted for the Linux kernel from IPXE project, see
+ * https://github.com/ipxe/ipxe/blob/master/src/arch/riscv32/libgcc/llshift.S
+ */
+
+#include <linux/linkage.h>
+#include <asm/asm.h>
+
+/**
+ * Arithmetic shift right
+ *
+ * @v a1:a0 Value to shift
+ * @v a2 Shift amount
+ * @ret a1:a0 Shifted value
+ */
+
+SYM_FUNC_START(__ashrdi3)
+
+ /* Perform shift by 32 bits, if applicable */
+ li t0, 32
+ sub t1, t0, a2
+ bgtz t1, 1f
+ mv a0, a1
+ srai a1, a1, 31
+1: /* Perform shift by modulo-32 bits, if applicable */
+ andi a2, a2, 0x1f
+ beqz a2, 2f
+ sll t2, a1, t1
+ sra a1, a1, a2
+ srl a0, a0, a2
+ or a0, a0, t2
+2: ret
+
+SYM_FUNC_END(__ashrdi3)
+EXPORT_SYMBOL(__ashrdi3)