70 lines
1.5 KiB
C
Executable file
70 lines
1.5 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _SELFTESTS_POWERPC_INSTRUCTIONS_H
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#define _SELFTESTS_POWERPC_INSTRUCTIONS_H
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#include <stdio.h>
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#include <stdlib.h>
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/* This defines the "copy" instruction from Power ISA 3.0 Book II, section 4.4. */
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#define __COPY(RA, RB, L) \
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(0x7c00060c | (RA) << (31-15) | (RB) << (31-20) | (L) << (31-10))
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#define COPY(RA, RB, L) \
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.long __COPY((RA), (RB), (L))
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static inline void copy(void *i)
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{
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asm volatile(str(COPY(0, %0, 0))";"
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:
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: "b" (i)
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: "memory"
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);
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}
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static inline void copy_first(void *i)
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{
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asm volatile(str(COPY(0, %0, 1))";"
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:
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: "b" (i)
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: "memory"
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);
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}
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/* This defines the "paste" instruction from Power ISA 3.0 Book II, section 4.4. */
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#define __PASTE(RA, RB, L, RC) \
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(0x7c00070c | (RA) << (31-15) | (RB) << (31-20) | (L) << (31-10) | (RC) << (31-31))
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#define PASTE(RA, RB, L, RC) \
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.long __PASTE((RA), (RB), (L), (RC))
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static inline int paste(void *i)
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{
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int cr;
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asm volatile(str(PASTE(0, %1, 0, 0))";"
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"mfcr %0;"
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: "=r" (cr)
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: "b" (i)
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: "memory"
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);
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return cr;
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}
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static inline int paste_last(void *i)
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{
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int cr;
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asm volatile(str(PASTE(0, %1, 1, 1))";"
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"mfcr %0;"
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: "=r" (cr)
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: "b" (i)
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: "memory"
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);
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return cr;
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}
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#define PPC_INST_COPY __COPY(0, 0, 0)
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#define PPC_INST_COPY_FIRST __COPY(0, 0, 1)
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#define PPC_INST_PASTE __PASTE(0, 0, 0, 0)
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#define PPC_INST_PASTE_LAST __PASTE(0, 0, 1, 1)
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#endif /* _SELFTESTS_POWERPC_INSTRUCTIONS_H */
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