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1da177e4 LT |
1 | #ifndef __ALPHA_COMPILER_H |
2 | #define __ALPHA_COMPILER_H | |
3 | ||
4 | /* | |
5 | * Herein are macros we use when describing various patterns we want to GCC. | |
6 | * In all cases we can get better schedules out of the compiler if we hide | |
7 | * as little as possible inside inline assembly. However, we want to be | |
8 | * able to know what we'll get out before giving up inline assembly. Thus | |
9 | * these tests and macros. | |
10 | */ | |
11 | ||
12 | #if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 | |
13 | # define __kernel_insbl(val, shift) __builtin_alpha_insbl(val, shift) | |
14 | # define __kernel_inswl(val, shift) __builtin_alpha_inswl(val, shift) | |
15 | # define __kernel_insql(val, shift) __builtin_alpha_insql(val, shift) | |
16 | # define __kernel_inslh(val, shift) __builtin_alpha_inslh(val, shift) | |
17 | # define __kernel_extbl(val, shift) __builtin_alpha_extbl(val, shift) | |
18 | # define __kernel_extwl(val, shift) __builtin_alpha_extwl(val, shift) | |
19 | # define __kernel_cmpbge(a, b) __builtin_alpha_cmpbge(a, b) | |
1da177e4 LT |
20 | #else |
21 | # define __kernel_insbl(val, shift) \ | |
22 | ({ unsigned long __kir; \ | |
23 | __asm__("insbl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
24 | __kir; }) | |
25 | # define __kernel_inswl(val, shift) \ | |
26 | ({ unsigned long __kir; \ | |
27 | __asm__("inswl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
28 | __kir; }) | |
29 | # define __kernel_insql(val, shift) \ | |
30 | ({ unsigned long __kir; \ | |
31 | __asm__("insql %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
32 | __kir; }) | |
33 | # define __kernel_inslh(val, shift) \ | |
34 | ({ unsigned long __kir; \ | |
35 | __asm__("inslh %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
36 | __kir; }) | |
37 | # define __kernel_extbl(val, shift) \ | |
38 | ({ unsigned long __kir; \ | |
39 | __asm__("extbl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
40 | __kir; }) | |
41 | # define __kernel_extwl(val, shift) \ | |
42 | ({ unsigned long __kir; \ | |
43 | __asm__("extwl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
44 | __kir; }) | |
45 | # define __kernel_cmpbge(a, b) \ | |
46 | ({ unsigned long __kir; \ | |
47 | __asm__("cmpbge %r2,%1,%0" : "=r"(__kir) : "rI"(b), "rJ"(a)); \ | |
48 | __kir; }) | |
88ed39b0 IK |
49 | #endif |
50 | ||
51 | #ifdef __alpha_cix__ | |
52 | # if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 | |
53 | # define __kernel_cttz(x) __builtin_ctzl(x) | |
54 | # define __kernel_ctlz(x) __builtin_clzl(x) | |
55 | # define __kernel_ctpop(x) __builtin_popcountl(x) | |
56 | # else | |
57 | # define __kernel_cttz(x) \ | |
58 | ({ unsigned long __kir; \ | |
59 | __asm__("cttz %1,%0" : "=r"(__kir) : "r"(x)); \ | |
60 | __kir; }) | |
61 | # define __kernel_ctlz(x) \ | |
62 | ({ unsigned long __kir; \ | |
63 | __asm__("ctlz %1,%0" : "=r"(__kir) : "r"(x)); \ | |
64 | __kir; }) | |
65 | # define __kernel_ctpop(x) \ | |
66 | ({ unsigned long __kir; \ | |
67 | __asm__("ctpop %1,%0" : "=r"(__kir) : "r"(x)); \ | |
68 | __kir; }) | |
69 | # endif | |
70 | #else | |
1da177e4 LT |
71 | # define __kernel_cttz(x) \ |
72 | ({ unsigned long __kir; \ | |
88ed39b0 | 73 | __asm__(".arch ev67; cttz %1,%0" : "=r"(__kir) : "r"(x)); \ |
1da177e4 LT |
74 | __kir; }) |
75 | # define __kernel_ctlz(x) \ | |
76 | ({ unsigned long __kir; \ | |
88ed39b0 | 77 | __asm__(".arch ev67; ctlz %1,%0" : "=r"(__kir) : "r"(x)); \ |
1da177e4 LT |
78 | __kir; }) |
79 | # define __kernel_ctpop(x) \ | |
80 | ({ unsigned long __kir; \ | |
88ed39b0 | 81 | __asm__(".arch ev67; ctpop %1,%0" : "=r"(__kir) : "r"(x)); \ |
1da177e4 LT |
82 | __kir; }) |
83 | #endif | |
84 | ||
85 | ||
86 | /* | |
87 | * Beginning with EGCS 1.1, GCC defines __alpha_bwx__ when the BWX | |
88 | * extension is enabled. Previous versions did not define anything | |
89 | * we could test during compilation -- too bad, so sad. | |
90 | */ | |
91 | ||
92 | #if defined(__alpha_bwx__) | |
93 | #define __kernel_ldbu(mem) (mem) | |
94 | #define __kernel_ldwu(mem) (mem) | |
95 | #define __kernel_stb(val,mem) ((mem) = (val)) | |
96 | #define __kernel_stw(val,mem) ((mem) = (val)) | |
97 | #else | |
98 | #define __kernel_ldbu(mem) \ | |
99 | ({ unsigned char __kir; \ | |
88ed39b0 IK |
100 | __asm__(".arch ev56; \ |
101 | ldbu %0,%1" : "=r"(__kir) : "m"(mem)); \ | |
1da177e4 LT |
102 | __kir; }) |
103 | #define __kernel_ldwu(mem) \ | |
104 | ({ unsigned short __kir; \ | |
88ed39b0 IK |
105 | __asm__(".arch ev56; \ |
106 | ldwu %0,%1" : "=r"(__kir) : "m"(mem)); \ | |
1da177e4 | 107 | __kir; }) |
88ed39b0 IK |
108 | #define __kernel_stb(val,mem) \ |
109 | __asm__(".arch ev56; \ | |
110 | stb %1,%0" : "=m"(mem) : "r"(val)) | |
111 | #define __kernel_stw(val,mem) \ | |
112 | __asm__(".arch ev56; \ | |
113 | stw %1,%0" : "=m"(mem) : "r"(val)) | |
1da177e4 LT |
114 | #endif |
115 | ||
7f9d77d7 | 116 | #ifdef __KERNEL__ |
1da177e4 LT |
117 | /* Some idiots over in <linux/compiler.h> thought inline should imply |
118 | always_inline. This breaks stuff. We'll include this file whenever | |
119 | we run into such problems. */ | |
120 | ||
121 | #include <linux/compiler.h> | |
122 | #undef inline | |
123 | #undef __inline__ | |
124 | #undef __inline | |
7243cc05 IK |
125 | #undef __always_inline |
126 | #define __always_inline inline __attribute__((always_inline)) | |
1da177e4 | 127 | |
7f9d77d7 DW |
128 | #endif /* __KERNEL__ */ |
129 | ||
1da177e4 | 130 | #endif /* __ALPHA_COMPILER_H */ |