Commit | Line | Data |
---|---|---|
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) | |
20 | # define __kernel_cttz(x) __builtin_ctzl(x) | |
21 | # define __kernel_ctlz(x) __builtin_clzl(x) | |
22 | # define __kernel_ctpop(x) __builtin_popcountl(x) | |
23 | #else | |
24 | # define __kernel_insbl(val, shift) \ | |
25 | ({ unsigned long __kir; \ | |
26 | __asm__("insbl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
27 | __kir; }) | |
28 | # define __kernel_inswl(val, shift) \ | |
29 | ({ unsigned long __kir; \ | |
30 | __asm__("inswl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
31 | __kir; }) | |
32 | # define __kernel_insql(val, shift) \ | |
33 | ({ unsigned long __kir; \ | |
34 | __asm__("insql %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
35 | __kir; }) | |
36 | # define __kernel_inslh(val, shift) \ | |
37 | ({ unsigned long __kir; \ | |
38 | __asm__("inslh %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
39 | __kir; }) | |
40 | # define __kernel_extbl(val, shift) \ | |
41 | ({ unsigned long __kir; \ | |
42 | __asm__("extbl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
43 | __kir; }) | |
44 | # define __kernel_extwl(val, shift) \ | |
45 | ({ unsigned long __kir; \ | |
46 | __asm__("extwl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \ | |
47 | __kir; }) | |
48 | # define __kernel_cmpbge(a, b) \ | |
49 | ({ unsigned long __kir; \ | |
50 | __asm__("cmpbge %r2,%1,%0" : "=r"(__kir) : "rI"(b), "rJ"(a)); \ | |
51 | __kir; }) | |
52 | # define __kernel_cttz(x) \ | |
53 | ({ unsigned long __kir; \ | |
54 | __asm__("cttz %1,%0" : "=r"(__kir) : "r"(x)); \ | |
55 | __kir; }) | |
56 | # define __kernel_ctlz(x) \ | |
57 | ({ unsigned long __kir; \ | |
58 | __asm__("ctlz %1,%0" : "=r"(__kir) : "r"(x)); \ | |
59 | __kir; }) | |
60 | # define __kernel_ctpop(x) \ | |
61 | ({ unsigned long __kir; \ | |
62 | __asm__("ctpop %1,%0" : "=r"(__kir) : "r"(x)); \ | |
63 | __kir; }) | |
64 | #endif | |
65 | ||
66 | ||
67 | /* | |
68 | * Beginning with EGCS 1.1, GCC defines __alpha_bwx__ when the BWX | |
69 | * extension is enabled. Previous versions did not define anything | |
70 | * we could test during compilation -- too bad, so sad. | |
71 | */ | |
72 | ||
73 | #if defined(__alpha_bwx__) | |
74 | #define __kernel_ldbu(mem) (mem) | |
75 | #define __kernel_ldwu(mem) (mem) | |
76 | #define __kernel_stb(val,mem) ((mem) = (val)) | |
77 | #define __kernel_stw(val,mem) ((mem) = (val)) | |
78 | #else | |
79 | #define __kernel_ldbu(mem) \ | |
80 | ({ unsigned char __kir; \ | |
81 | __asm__("ldbu %0,%1" : "=r"(__kir) : "m"(mem)); \ | |
82 | __kir; }) | |
83 | #define __kernel_ldwu(mem) \ | |
84 | ({ unsigned short __kir; \ | |
85 | __asm__("ldwu %0,%1" : "=r"(__kir) : "m"(mem)); \ | |
86 | __kir; }) | |
87 | #define __kernel_stb(val,mem) \ | |
88 | __asm__("stb %1,%0" : "=m"(mem) : "r"(val)) | |
89 | #define __kernel_stw(val,mem) \ | |
90 | __asm__("stw %1,%0" : "=m"(mem) : "r"(val)) | |
91 | #endif | |
92 | ||
93 | /* Some idiots over in <linux/compiler.h> thought inline should imply | |
94 | always_inline. This breaks stuff. We'll include this file whenever | |
95 | we run into such problems. */ | |
96 | ||
97 | #include <linux/compiler.h> | |
98 | #undef inline | |
99 | #undef __inline__ | |
100 | #undef __inline | |
7243cc05 IK |
101 | #undef __always_inline |
102 | #define __always_inline inline __attribute__((always_inline)) | |
1da177e4 LT |
103 | |
104 | #endif /* __ALPHA_COMPILER_H */ |