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Re: [Qemu-devel] [PATCH 1/3] cpu-common: Modify cpu_physical_memory_read
From: |
Artyom Tarasenko |
Subject: |
Re: [Qemu-devel] [PATCH 1/3] cpu-common: Modify cpu_physical_memory_read and cpu_physical_memory_write |
Date: |
Sun, 10 Apr 2011 14:37:32 +0200 |
On Sat, Mar 26, 2011 at 9:06 PM, Stefan Weil <address@hidden> wrote:
> A lot of calls don't operate on bytes but on words or on structured data.
> So instead of a pointer to uint8_t, a void pointer is the better choice.
Wouldn't it make the endianness conversions more complex? uint8_t[]
has a very obvious byte order,
structured data doesn't.
> This allows removing many type casts.
>
> (Some very early implementations of memcpy used char pointers
> which were replaced by void pointers for the same reason).
>
> Cc: Blue Swirl <address@hidden>
> Signed-off-by: Stefan Weil <address@hidden>
> ---
> cpu-common.h | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/cpu-common.h b/cpu-common.h
> index ef4e8da..f44a2b0 100644
> --- a/cpu-common.h
> +++ b/cpu-common.h
> @@ -68,12 +68,12 @@ void cpu_unregister_io_memory(int table_address);
> void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
> int len, int is_write);
> static inline void cpu_physical_memory_read(target_phys_addr_t addr,
> - uint8_t *buf, int len)
> + void *buf, int len)
> {
> cpu_physical_memory_rw(addr, buf, len, 0);
> }
> static inline void cpu_physical_memory_write(target_phys_addr_t addr,
> - const uint8_t *buf, int len)
> + const void *buf, int len)
> {
> cpu_physical_memory_rw(addr, (uint8_t *)buf, len, 1);
> }
> --
> 1.7.2.5
>
>
>
--
Regards,
Artyom Tarasenko
solaris/sparc under qemu blog: http://tyom.blogspot.com/