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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; \ | |
14 | name: | |
15 | ||
16 | #define ENTRY_MIN_ALIGN(name) \ | |
17 | .align 16; \ | |
18 | .proc name; \ | |
19 | name: | |
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-.; \ | |
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 | |
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 */ |