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Add endianness as io mem parameter

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As stated before, devices can be little, big or native endian. The
target endianness is not of their concern, so we need to push things
down a level.

This patch adds a parameter to cpu_register_io_memory that allows a
device to choose its endianness. For now, all devices simply choose
native endian, because that's the same behavior as before.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Alexander Graf 2010-12-08 12:05:37 +01:00 • committed by Blue Swirl
parent dd310534e3
commit 2507c12ab0
154 changed files with 446 additions and 262 deletions
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21
exec.c
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@ -3331,7 +3331,8 @@ static subpage_t *subpage_init (target_phys_addr_t base, ram_addr_t *phys,
mmio = qemu_mallocz(sizeof(subpage_t));
mmio->base = base;
subpage_memory = cpu_register_io_memory(subpage_read, subpage_write, mmio);
subpage_memory = cpu_register_io_memory(subpage_read, subpage_write, mmio,
DEVICE_NATIVE_ENDIAN);
#if defined(DEBUG_SUBPAGE)
printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__,
mmio, base, TARGET_PAGE_SIZE, subpage_memory);
@ -3468,7 +3469,6 @@ static int cpu_register_io_memory_fixed(int io_index,
void *opaque, enum device_endian endian)
{
int i;
int endian = DEVICE_NATIVE_ENDIAN;
if (io_index <= 0) {
io_index = get_free_io_mem_idx();
@ -3513,7 +3513,7 @@ int cpu_register_io_memory(CPUReadMemoryFunc * const *mem_read,
CPUWriteMemoryFunc * const *mem_write,
void *opaque, enum device_endian endian)
{
return cpu_register_io_memory_fixed(0, mem_read, mem_write, opaque);
return cpu_register_io_memory_fixed(0, mem_read, mem_write, opaque, endian);
}
void cpu_unregister_io_memory(int io_table_address)
@ -3535,14 +3535,21 @@ static void io_mem_init(void)
{
int i;
cpu_register_io_memory_fixed(IO_MEM_ROM, error_mem_read, unassigned_mem_write, NULL);
cpu_register_io_memory_fixed(IO_MEM_UNASSIGNED, unassigned_mem_read, unassigned_mem_write, NULL);
cpu_register_io_memory_fixed(IO_MEM_NOTDIRTY, error_mem_read, notdirty_mem_write, NULL);
cpu_register_io_memory_fixed(IO_MEM_ROM, error_mem_read,
unassigned_mem_write, NULL,
DEVICE_NATIVE_ENDIAN);
cpu_register_io_memory_fixed(IO_MEM_UNASSIGNED, unassigned_mem_read,
unassigned_mem_write, NULL,
DEVICE_NATIVE_ENDIAN);
cpu_register_io_memory_fixed(IO_MEM_NOTDIRTY, error_mem_read,
notdirty_mem_write, NULL,
DEVICE_NATIVE_ENDIAN);
for (i=0; i<5; i++)
io_mem_used[i] = 1;
io_mem_watch = cpu_register_io_memory(watch_mem_read,
watch_mem_write, NULL);
watch_mem_write, NULL,
DEVICE_NATIVE_ENDIAN);
}
#endif /* !defined(CONFIG_USER_ONLY) */