ia64/xen-unstable

view xen/include/asm-ia64/linux-xen/asm/asmmacro.h @ 10672:ac110157c19d

[IA64] Move asmmacro.h to linux-xen

Signed-off-by: Akio Takebe <takebe_akio@jp.fujitsu.com>
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
author awilliam@xenbuild.aw
date Thu Jul 06 10:02:28 2006 -0600 (2006-07-06)
parents
children 80e04aa530b8
line source
1 #ifndef _ASM_IA64_ASMMACRO_H
2 #define _ASM_IA64_ASMMACRO_H
4 /*
5 * Copyright (C) 2000-2001, 2003-2004 Hewlett-Packard Co
6 * David Mosberger-Tang <davidm@hpl.hp.com>
7 */
9 #include <linux/config.h>
11 #define ENTRY(name) \
12 .align 32; \
13 .proc name; \
14 name:
16 #define ENTRY_MIN_ALIGN(name) \
17 .align 16; \
18 .proc name; \
19 name:
21 #define GLOBAL_ENTRY(name) \
22 .global name; \
23 ENTRY(name)
25 #define END(name) \
26 .endp name
28 /*
29 * Helper macros to make unwind directives more readable:
30 */
32 /* prologue_gr: */
33 #define ASM_UNW_PRLG_RP 0x8
34 #define ASM_UNW_PRLG_PFS 0x4
35 #define ASM_UNW_PRLG_PSP 0x2
36 #define ASM_UNW_PRLG_PR 0x1
37 #define ASM_UNW_PRLG_GRSAVE(ninputs) (32+(ninputs))
39 /*
40 * Helper macros for accessing user memory.
41 */
43 .section "__ex_table", "a" // declare section & section attributes
44 .previous
46 # define EX(y,x...) \
47 .xdata4 "__ex_table", 99f-., y-.; \
48 [99:] x
49 # define EXCLR(y,x...) \
50 .xdata4 "__ex_table", 99f-., y-.+4; \
51 [99:] x
53 /*
54 * Mark instructions that need a load of a virtual address patched to be
55 * a load of a physical address. We use this either in critical performance
56 * path (ivt.S - TLB miss processing) or in places where it might not be
57 * safe to use a "tpa" instruction (mca_asm.S - error recovery).
58 */
59 .section ".data.patch.vtop", "a" // declare section & section attributes
60 .previous
62 #define LOAD_PHYSICAL(pr, reg, obj) \
63 [1:](pr)movl reg = obj; \
64 .xdata4 ".data.patch.vtop", 1b-.
66 /*
67 * For now, we always put in the McKinley E9 workaround. On CPUs that don't need it,
68 * we'll patch out the work-around bundles with NOPs, so their impact is minimal.
69 */
70 #define DO_MCKINLEY_E9_WORKAROUND
72 #ifdef DO_MCKINLEY_E9_WORKAROUND
73 .section ".data.patch.mckinley_e9", "a"
74 .previous
75 /* workaround for Itanium 2 Errata 9: */
76 # define FSYS_RETURN \
77 .xdata4 ".data.patch.mckinley_e9", 1f-.; \
78 1:{ .mib; \
79 nop.m 0; \
80 mov r16=ar.pfs; \
81 br.call.sptk.many b7=2f;; \
82 }; \
83 2:{ .mib; \
84 nop.m 0; \
85 mov ar.pfs=r16; \
86 br.ret.sptk.many b6;; \
87 }
88 #else
89 # define FSYS_RETURN br.ret.sptk.many b6
90 #endif
92 /*
93 * Up until early 2004, use of .align within a function caused bad unwind info.
94 * TEXT_ALIGN(n) expands into ".align n" if a fixed GAS is available or into nothing
95 * otherwise.
96 */
97 #ifdef HAVE_WORKING_TEXT_ALIGN
98 # define TEXT_ALIGN(n) .align n
99 #else
100 # define TEXT_ALIGN(n)
101 #endif
103 #ifdef HAVE_SERIALIZE_DIRECTIVE
104 # define dv_serialize_data .serialize.data
105 # define dv_serialize_instruction .serialize.instruction
106 #else
107 # define dv_serialize_data
108 # define dv_serialize_instruction
109 #endif
111 #endif /* _ASM_IA64_ASMMACRO_H */