diff options
author | Simon Guo <wei.guo.simon@gmail.com> | 2016-09-30 10:32:51 +0800 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-11-17 17:11:47 +1100 |
commit | 15ec3997aa3bffc461f7b47ca9365d4b0323c671 (patch) | |
tree | 60fe7489443c2b596d7f8bda2106444d98214439 /tools/testing/selftests/powerpc/include/instructions.h | |
parent | efe71a67b5aa89e0348ac862ca92a57d98d3fd8d (diff) |
selftests/powerpc: Move shared headers into new include dir
There are some functions, especially register related, which can
be shared across multiple selftests/powerpc test directories.
This patch creates a new include directory to store those shared
files, so that the file layout becomes more neat.
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
[mpe: Reworked to move the headers only]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools/testing/selftests/powerpc/include/instructions.h')
-rw-r--r-- | tools/testing/selftests/powerpc/include/instructions.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/include/instructions.h b/tools/testing/selftests/powerpc/include/instructions.h new file mode 100644 index 000000000000..0fb0bd3b28c9 --- /dev/null +++ b/tools/testing/selftests/powerpc/include/instructions.h @@ -0,0 +1,68 @@ +#ifndef _SELFTESTS_POWERPC_INSTRUCTIONS_H +#define _SELFTESTS_POWERPC_INSTRUCTIONS_H + +#include <stdio.h> +#include <stdlib.h> + +/* This defines the "copy" instruction from Power ISA 3.0 Book II, section 4.4. */ +#define __COPY(RA, RB, L) \ + (0x7c00060c | (RA) << (31-15) | (RB) << (31-20) | (L) << (31-10)) +#define COPY(RA, RB, L) \ + .long __COPY((RA), (RB), (L)) + +static inline void copy(void *i) +{ + asm volatile(str(COPY(0, %0, 0))";" + : + : "b" (i) + : "memory" + ); +} + +static inline void copy_first(void *i) +{ + asm volatile(str(COPY(0, %0, 1))";" + : + : "b" (i) + : "memory" + ); +} + +/* This defines the "paste" instruction from Power ISA 3.0 Book II, section 4.4. */ +#define __PASTE(RA, RB, L, RC) \ + (0x7c00070c | (RA) << (31-15) | (RB) << (31-20) | (L) << (31-10) | (RC) << (31-31)) +#define PASTE(RA, RB, L, RC) \ + .long __PASTE((RA), (RB), (L), (RC)) + +static inline int paste(void *i) +{ + int cr; + + asm volatile(str(PASTE(0, %1, 0, 0))";" + "mfcr %0;" + : "=r" (cr) + : "b" (i) + : "memory" + ); + return cr; +} + +static inline int paste_last(void *i) +{ + int cr; + + asm volatile(str(PASTE(0, %1, 1, 1))";" + "mfcr %0;" + : "=r" (cr) + : "b" (i) + : "memory" + ); + return cr; +} + +#define PPC_INST_COPY __COPY(0, 0, 0) +#define PPC_INST_COPY_FIRST __COPY(0, 0, 1) +#define PPC_INST_PASTE __PASTE(0, 0, 0, 0) +#define PPC_INST_PASTE_LAST __PASTE(0, 0, 1, 1) + +#endif /* _SELFTESTS_POWERPC_INSTRUCTIONS_H */ |