diff options
Diffstat (limited to 'include/asm-sparc64/psrcompat.h')
-rw-r--r-- | include/asm-sparc64/psrcompat.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/asm-sparc64/psrcompat.h b/include/asm-sparc64/psrcompat.h new file mode 100644 index 000000000000..5590ce6bd076 --- /dev/null +++ b/include/asm-sparc64/psrcompat.h | |||
@@ -0,0 +1,44 @@ | |||
1 | /* $Id: psrcompat.h,v 1.5 1998/10/06 09:28:39 jj Exp $ */ | ||
2 | #ifndef _SPARC64_PSRCOMPAT_H | ||
3 | #define _SPARC64_PSRCOMPAT_H | ||
4 | |||
5 | #include <asm/pstate.h> | ||
6 | |||
7 | /* Old 32-bit PSR fields for the compatibility conversion code. */ | ||
8 | #define PSR_CWP 0x0000001f /* current window pointer */ | ||
9 | #define PSR_ET 0x00000020 /* enable traps field */ | ||
10 | #define PSR_PS 0x00000040 /* previous privilege level */ | ||
11 | #define PSR_S 0x00000080 /* current privilege level */ | ||
12 | #define PSR_PIL 0x00000f00 /* processor interrupt level */ | ||
13 | #define PSR_EF 0x00001000 /* enable floating point */ | ||
14 | #define PSR_EC 0x00002000 /* enable co-processor */ | ||
15 | #define PSR_LE 0x00008000 /* SuperSparcII little-endian */ | ||
16 | #define PSR_ICC 0x00f00000 /* integer condition codes */ | ||
17 | #define PSR_C 0x00100000 /* carry bit */ | ||
18 | #define PSR_V 0x00200000 /* overflow bit */ | ||
19 | #define PSR_Z 0x00400000 /* zero bit */ | ||
20 | #define PSR_N 0x00800000 /* negative bit */ | ||
21 | #define PSR_VERS 0x0f000000 /* cpu-version field */ | ||
22 | #define PSR_IMPL 0xf0000000 /* cpu-implementation field */ | ||
23 | |||
24 | #define PSR_V8PLUS 0xff000000 /* fake impl/ver, meaning a 64bit CPU is present */ | ||
25 | #define PSR_XCC 0x000f0000 /* if PSR_V8PLUS, this is %xcc */ | ||
26 | |||
27 | static inline unsigned int tstate_to_psr(unsigned long tstate) | ||
28 | { | ||
29 | return ((tstate & TSTATE_CWP) | | ||
30 | PSR_S | | ||
31 | ((tstate & TSTATE_ICC) >> 12) | | ||
32 | ((tstate & TSTATE_XCC) >> 20) | | ||
33 | PSR_V8PLUS); | ||
34 | } | ||
35 | |||
36 | static inline unsigned long psr_to_tstate_icc(unsigned int psr) | ||
37 | { | ||
38 | unsigned long tstate = ((unsigned long)(psr & PSR_ICC)) << 12; | ||
39 | if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) | ||
40 | tstate |= ((unsigned long)(psr & PSR_XCC)) << 20; | ||
41 | return tstate; | ||
42 | } | ||
43 | |||
44 | #endif /* !(_SPARC64_PSRCOMPAT_H) */ | ||