diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.h | 111 |
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 --- /dev/null +++ b/include/asm-ia64/asmmacro.h | |||
@@ -0,0 +1,111 @@ | |||
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 */ | ||