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| author |   Paul Mundt <lethal@linux-sh.org> | 2007-05-08 14:50:59 +0900 |
|---|---|---|
| committer |   Paul Mundt <lethal@hera.kernel.org> | 2007-05-09 01:35:01 +0000 |
| commit | bd0799977cb9b68aa6a39e9630aeea4778a58385 (patch) | |
| tree | 125c0c923701c5b6f823a7b614c295e06370d46c /include/asm-sh | |
| parent | sh: Kill off redundant __div64_32 symbol export. (diff) | |
| download | linux-dev-bd0799977cb9b68aa6a39e9630aeea4778a58385.tar.xz linux-dev-bd0799977cb9b68aa6a39e9630aeea4778a58385.zip | |
sh: Support for SH-2A 32-bit opcodes.
SH-2A supports both 16 and 32-bit instructions, add a simple helper
for figuring out the instruction size in the places where there are
hardcoded 16-bit assumptions.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh')
| -rw-r--r-- | include/asm-sh/system.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h index e7e96ee0c8a5..82f3e229e621 100644 --- a/include/asm-sh/system.h +++ b/include/asm-sh/system.h @@ -255,6 +255,15 @@ static inline void *set_exception_table_evt(unsigned int evt, void *handler) return set_exception_table_vec(evt >> 5, handler); } +/* + * SH-2A has both 16 and 32-bit opcodes, do lame encoding checks. + */ +#ifdef CONFIG_CPU_SH2A +extern unsigned int instruction_size(unsigned int insn); +#else +#define instruction_size(insn) (2) +#endif + /* XXX * disable hlt during certain critical i/o operations */ |