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46 lines
2.0 KiB
46 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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#ifndef _SPARC64_PSRCOMPAT_H |
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#define _SPARC64_PSRCOMPAT_H |
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#include <asm/pstate.h> |
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/* Old 32-bit PSR fields for the compatibility conversion code. */ |
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#define PSR_CWP 0x0000001f /* current window pointer */ |
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#define PSR_ET 0x00000020 /* enable traps field */ |
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#define PSR_PS 0x00000040 /* previous privilege level */ |
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#define PSR_S 0x00000080 /* current privilege level */ |
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#define PSR_PIL 0x00000f00 /* processor interrupt level */ |
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#define PSR_EF 0x00001000 /* enable floating point */ |
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#define PSR_EC 0x00002000 /* enable co-processor */ |
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#define PSR_SYSCALL 0x00004000 /* inside of a syscall */ |
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#define PSR_LE 0x00008000 /* SuperSparcII little-endian */ |
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#define PSR_ICC 0x00f00000 /* integer condition codes */ |
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#define PSR_C 0x00100000 /* carry bit */ |
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#define PSR_V 0x00200000 /* overflow bit */ |
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#define PSR_Z 0x00400000 /* zero bit */ |
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#define PSR_N 0x00800000 /* negative bit */ |
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#define PSR_VERS 0x0f000000 /* cpu-version field */ |
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#define PSR_IMPL 0xf0000000 /* cpu-implementation field */ |
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#define PSR_V8PLUS 0xff000000 /* fake impl/ver, meaning a 64bit CPU is present */ |
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#define PSR_XCC 0x000f0000 /* if PSR_V8PLUS, this is %xcc */ |
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static inline unsigned int tstate_to_psr(unsigned long tstate) |
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{ |
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return ((tstate & TSTATE_CWP) | |
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PSR_S | |
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((tstate & TSTATE_ICC) >> 12) | |
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((tstate & TSTATE_XCC) >> 20) | |
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((tstate & TSTATE_SYSCALL) ? PSR_SYSCALL : 0) | |
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PSR_V8PLUS); |
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} |
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static inline unsigned long psr_to_tstate_icc(unsigned int psr) |
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{ |
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unsigned long tstate = ((unsigned long)(psr & PSR_ICC)) << 12; |
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if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) |
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tstate |= ((unsigned long)(psr & PSR_XCC)) << 20; |
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return tstate; |
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} |
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#endif /* !(_SPARC64_PSRCOMPAT_H) */
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