Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 136 insertions, 0 deletions

diff --git a/arch/ia64/include/asm/asmmacro.h b/arch/ia64/include/asm/asmmacro.h
new file mode 100644
index 0000000000..52619c517f
--- /dev/null
+++ b/arch/ia64/include/asm/asmmacro.h
@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_IA64_ASMMACRO_H
+#define _ASM_IA64_ASMMACRO_H
+
+/*
+ * Copyright (C) 2000-2001, 2003-2004 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+
+#define ENTRY(name)				\
+	.align 32;				\
+	.proc name;				\
+name:
+
+#define ENTRY_MIN_ALIGN(name)			\
+	.align 16;				\
+	.proc name;				\
+name:
+
+#define GLOBAL_ENTRY(name)			\
+	.global name;				\
+	ENTRY(name)
+
+#define END(name)				\
+	.endp name
+
+/*
+ * Helper macros to make unwind directives more readable:
+ */
+
+/* prologue_gr: */
+#define ASM_UNW_PRLG_RP			0x8
+#define ASM_UNW_PRLG_PFS		0x4
+#define ASM_UNW_PRLG_PSP		0x2
+#define ASM_UNW_PRLG_PR			0x1
+#define ASM_UNW_PRLG_GRSAVE(ninputs)	(32+(ninputs))
+
+/*
+ * Helper macros for accessing user memory.
+ *
+ * When adding any new .section/.previous entries here, make sure to
+ * also add it to the DISCARD section in arch/ia64/kernel/gate.lds.S or
+ * unpleasant things will happen.
+ */
+
+	.section "__ex_table", "a"		// declare section & section attributes
+	.previous
+
+# define EX(y,x...)				\
+	.xdata4 "__ex_table", 99f-., y-.;	\
+  [99:]	x
+# define EXCLR(y,x...)				\
+	.xdata4 "__ex_table", 99f-., y-.+4;	\
+  [99:]	x
+
+/*
+ * Tag MCA recoverable instruction ranges.
+ */
+
+	.section "__mca_table", "a"		// declare section & section attributes
+	.previous
+
+# define MCA_RECOVER_RANGE(y)			\
+	.xdata4 "__mca_table", y-., 99f-.;	\
+  [99:]
+
+/*
+ * Mark instructions that need a load of a virtual address patched to be
+ * a load of a physical address.  We use this either in critical performance
+ * path (ivt.S - TLB miss processing) or in places where it might not be
+ * safe to use a "tpa" instruction (mca_asm.S - error recovery).
+ */
+	.section ".data..patch.vtop", "a"	// declare section & section attributes
+	.previous
+
+#define	LOAD_PHYSICAL(pr, reg, obj)		\
+[1:](pr)movl reg = obj;				\
+	.xdata4 ".data..patch.vtop", 1b-.
+
+/*
+ * For now, we always put in the McKinley E9 workaround.  On CPUs that don't need it,
+ * we'll patch out the work-around bundles with NOPs, so their impact is minimal.
+ */
+#define DO_MCKINLEY_E9_WORKAROUND
+
+#ifdef DO_MCKINLEY_E9_WORKAROUND
+	.section ".data..patch.mckinley_e9", "a"
+	.previous
+/* workaround for Itanium 2 Errata 9: */
+# define FSYS_RETURN					\
+	.xdata4 ".data..patch.mckinley_e9", 1f-.;	\
+1:{ .mib;						\
+	nop.m 0;					\
+	mov r16=ar.pfs;					\
+	br.call.sptk.many b7=2f;;			\
+  };							\
+2:{ .mib;						\
+	nop.m 0;					\
+	mov ar.pfs=r16;					\
+	br.ret.sptk.many b6;;				\
+  }
+#else
+# define FSYS_RETURN	br.ret.sptk.many b6
+#endif
+
+/*
+ * If physical stack register size is different from DEF_NUM_STACK_REG,
+ * dynamically patch the kernel for correct size.
+ */
+	.section ".data..patch.phys_stack_reg", "a"
+	.previous
+#define LOAD_PHYS_STACK_REG_SIZE(reg)			\
+[1:]	adds reg=IA64_NUM_PHYS_STACK_REG*8+8,r0;	\
+	.xdata4 ".data..patch.phys_stack_reg", 1b-.
+
+/*
+ * Up until early 2004, use of .align within a function caused bad unwind info.
+ * TEXT_ALIGN(n) expands into ".align n" if a fixed GAS is available or into nothing
+ * otherwise.
+ */
+#ifdef HAVE_WORKING_TEXT_ALIGN
+# define TEXT_ALIGN(n)	.align n
+#else
+# define TEXT_ALIGN(n)
+#endif
+
+#ifdef HAVE_SERIALIZE_DIRECTIVE
+# define dv_serialize_data		.serialize.data
+# define dv_serialize_instruction	.serialize.instruction
+#else
+# define dv_serialize_data
+# define dv_serialize_instruction
+#endif
+
+#endif /* _ASM_IA64_ASMMACRO_H */