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[Qemu-devel] [PATCH] Fill in unassigned mem read/write callbacks.
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH] Fill in unassigned mem read/write callbacks. |
Date: |
Fri, 7 May 2010 09:52:51 -0700 |
Implement the "functions may be omitted with NULL pointer"
interface mentioned in the function block comment by transforming
NULL entries in the read/write arrays into calls to the
unassigned_mem family of functions.
Signed-off-by: Richard Henderson <address@hidden>
---
exec.c | 12 ++++++++++--
1 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/exec.c b/exec.c
index e980788..3416aed 100644
--- a/exec.c
+++ b/exec.c
@@ -3262,6 +3262,8 @@ static int cpu_register_io_memory_fixed(int io_index,
CPUWriteMemoryFunc * const *mem_write,
void *opaque)
{
+ int i;
+
if (io_index <= 0) {
io_index = get_free_io_mem_idx();
if (io_index == -1)
@@ -3272,8 +3274,14 @@ static int cpu_register_io_memory_fixed(int io_index,
return -1;
}
- memcpy(io_mem_read[io_index], mem_read, 3 * sizeof(CPUReadMemoryFunc*));
- memcpy(io_mem_write[io_index], mem_write, 3 * sizeof(CPUWriteMemoryFunc*));
+ for (i = 0; i < 3; ++i) {
+ io_mem_read[io_index][i]
+ = (mem_read[i] ? mem_read[i] : unassigned_mem_read[i]);
+ }
+ for (i = 0; i < 3; ++i) {
+ io_mem_write[io_index][i]
+ = (mem_write[i] ? mem_write[i] : unassigned_mem_write[i]);
+ }
io_mem_opaque[io_index] = opaque;
return (io_index << IO_MEM_SHIFT);
--
1.6.6.1