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| author | Tony Nguyen <tony.nguyen@bt.com> | 2019-08-24 04:36:52 +1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2019-09-03 08:30:39 -0700 |
| commit | d5d680cacc66ef7e3c02c81dc8f3a34eabce6dfe (patch) | |
| tree | f9738bf1ce601181a99be6c090f597fd6112b117 /exec.c | |
| parent | 07f0834f264a79d6225202bd35ca37f74afb8df1 (diff) | |
| download | qemu-d5d680cacc66ef7e3c02c81dc8f3a34eabce6dfe.zip qemu-d5d680cacc66ef7e3c02c81dc8f3a34eabce6dfe.tar.gz qemu-d5d680cacc66ef7e3c02c81dc8f3a34eabce6dfe.tar.bz2 | |
memory: Access MemoryRegion with endianness
Preparation for collapsing the two byte swaps adjust_endianness and
handle_bswap into the former.
Call memory_region_dispatch_{read|write} with endianness encoded into
the "MemOp op" operand.
This patch does not change any behaviour as
memory_region_dispatch_{read|write} is yet to handle the endianness.
Once it does handle endianness, callers with byte swaps can collapse
them into adjust_endianness.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Tony Nguyen <tony.nguyen@bt.com>
Message-Id: <8066ab3eb037c0388dfadfe53c5118429dd1de3a.1566466906.git.tony.nguyen@bt.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 13 |
1 files changed, 11 insertions, 2 deletions
@@ -3364,8 +3364,13 @@ static MemTxResult flatview_write_continue(FlatView *fv, hwaddr addr, /* XXX: could force current_cpu to NULL to avoid potential bugs */ val = ldn_p(buf, l); + /* + * TODO: Merge bswap from ldn_p into memory_region_dispatch_write + * by using ldn_he_p and dropping MO_TE to get a host-endian value. + */ result |= memory_region_dispatch_write(mr, addr1, val, - size_memop(l), attrs); + size_memop(l) | MO_TE, + attrs); } else { /* RAM case */ ptr = qemu_ram_ptr_length(mr->ram_block, addr1, &l, false); @@ -3426,8 +3431,12 @@ MemTxResult flatview_read_continue(FlatView *fv, hwaddr addr, /* I/O case */ release_lock |= prepare_mmio_access(mr); l = memory_access_size(mr, l, addr1); + /* + * TODO: Merge bswap from stn_p into memory_region_dispatch_read + * by using stn_he_p and dropping MO_TE to get a host-endian value. + */ result |= memory_region_dispatch_read(mr, addr1, &val, - size_memop(l), attrs); + size_memop(l) | MO_TE, attrs); stn_p(buf, l, val); } else { /* RAM case */ |