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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-ia64/asmmacro.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-ia64/asmmacro.h')
-rw-r--r--include/asm-ia64/asmmacro.h111
1 files changed, 111 insertions, 0 deletions
diff --git a/include/asm-ia64/asmmacro.h b/include/asm-ia64/asmmacro.h
new file mode 100644
index 000000000000..77af457f4ad7
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+++ b/include/asm-ia64/asmmacro.h
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1#ifndef _ASM_IA64_ASMMACRO_H
2#define _ASM_IA64_ASMMACRO_H
3
4/*
5 * Copyright (C) 2000-2001, 2003-2004 Hewlett-Packard Co
6 * David Mosberger-Tang <davidm@hpl.hp.com>
7 */
8
9#include <linux/config.h>
10
11#define ENTRY(name) \
12 .align 32; \
13 .proc name; \
14name:
15
16#define ENTRY_MIN_ALIGN(name) \
17 .align 16; \
18 .proc name; \
19name:
20
21#define GLOBAL_ENTRY(name) \
22 .global name; \
23 ENTRY(name)
24
25#define END(name) \
26 .endp name
27
28/*
29 * Helper macros to make unwind directives more readable:
30 */
31
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))
38
39/*
40 * Helper macros for accessing user memory.
41 */
42
43 .section "__ex_table", "a" // declare section & section attributes
44 .previous
45
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
52
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
61
62#define LOAD_PHYSICAL(pr, reg, obj) \
63[1:](pr)movl reg = obj; \
64 .xdata4 ".data.patch.vtop", 1b-.
65
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
71
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-.; \
781:{ .mib; \
79 nop.m 0; \
80 mov r16=ar.pfs; \
81 br.call.sptk.many b7=2f;; \
82 }; \
832:{ .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
91
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
102
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
110
111#endif /* _ASM_IA64_ASMMACRO_H */