diff options
| author | Jordan Niethe <jniethe5@gmail.com> | 2020-05-06 06:40:31 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-18 17:10:37 +0300 |
| commit | 94afd069d937d84fb4f696eb9a78db4084e43d21 (patch) | |
| tree | 88f3f2fef60d56cd3b155762c378ac1fc05a5bd2 /arch/powerpc/xmon/xmon_bpts.h | |
| parent | 217862d9b98bf08958d57fd7b31b9de0f1a9477d (diff) | |
| download | linux-94afd069d937d84fb4f696eb9a78db4084e43d21.tar.xz | |
powerpc: Use a datatype for instructions
Currently unsigned ints are used to represent instructions on powerpc.
This has worked well as instructions have always been 4 byte words.
However, ISA v3.1 introduces some changes to instructions that mean
this scheme will no longer work as well. This change is Prefixed
Instructions. A prefixed instruction is made up of a word prefix
followed by a word suffix to make an 8 byte double word instruction.
No matter the endianness of the system the prefix always comes first.
Prefixed instructions are only planned for powerpc64.
Introduce a ppc_inst type to represent both prefixed and word
instructions on powerpc64 while keeping it possible to exclusively
have word instructions on powerpc32.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
[mpe: Fix compile error in emulate_spe()]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-12-jniethe5@gmail.com
Diffstat (limited to 'arch/powerpc/xmon/xmon_bpts.h')
| -rw-r--r-- | arch/powerpc/xmon/xmon_bpts.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/xmon/xmon_bpts.h b/arch/powerpc/xmon/xmon_bpts.h index b7e94375db86..57e6fb03de48 100644 --- a/arch/powerpc/xmon/xmon_bpts.h +++ b/arch/powerpc/xmon/xmon_bpts.h @@ -4,11 +4,11 @@ #define NBPTS 256 #ifndef __ASSEMBLY__ -#define BPT_SIZE (sizeof(unsigned int) * 2) -#define BPT_WORDS (BPT_SIZE / sizeof(unsigned int)) +#include <asm/inst.h> +#define BPT_SIZE (sizeof(struct ppc_inst) * 2) +#define BPT_WORDS (BPT_SIZE / sizeof(struct ppc_inst)) extern unsigned int bpt_table[NBPTS * BPT_WORDS]; - #endif /* __ASSEMBLY__ */ #endif /* XMON_BPTS_H */ |