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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/powerpc/lib/quad.S
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/lib/quad.S')
-rw-r--r--arch/powerpc/lib/quad.S58
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/powerpc/lib/quad.S b/arch/powerpc/lib/quad.S
new file mode 100644
index 000000000..da71760e5
--- /dev/null
+++ b/arch/powerpc/lib/quad.S
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Quadword loads and stores
+ * for use in instruction emulation.
+ *
+ * Copyright 2017 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
+ */
+
+#include <asm/processor.h>
+#include <asm/ppc_asm.h>
+#include <asm/ppc-opcode.h>
+#include <asm/reg.h>
+#include <asm/asm-offsets.h>
+#include <linux/errno.h>
+
+/* do_lq(unsigned long ea, unsigned long *regs) */
+_GLOBAL(do_lq)
+1: lq r6, 0(r3)
+ std r6, 0(r4)
+ std r7, 8(r4)
+ li r3, 0
+ blr
+2: li r3, -EFAULT
+ blr
+ EX_TABLE(1b, 2b)
+
+/* do_stq(unsigned long ea, unsigned long val0, unsigned long val1) */
+_GLOBAL(do_stq)
+1: stq r4, 0(r3)
+ li r3, 0
+ blr
+2: li r3, -EFAULT
+ blr
+ EX_TABLE(1b, 2b)
+
+/* do_lqarx(unsigned long ea, unsigned long *regs) */
+_GLOBAL(do_lqarx)
+1: PPC_LQARX(6, 0, 3, 0)
+ std r6, 0(r4)
+ std r7, 8(r4)
+ li r3, 0
+ blr
+2: li r3, -EFAULT
+ blr
+ EX_TABLE(1b, 2b)
+
+/* do_stqcx(unsigned long ea, unsigned long val0, unsigned long val1,
+ unsigned int *crp) */
+
+_GLOBAL(do_stqcx)
+1: PPC_STQCX(4, 0, 3)
+ mfcr r5
+ stw r5, 0(r6)
+ li r3, 0
+ blr
+2: li r3, -EFAULT
+ blr
+ EX_TABLE(1b, 2b)