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memory: add tracepoints for MMIO reads/writes

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This is quite handy to debug softmmu targets.

Reviewed-by: Andreas Faerber <afaerber@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1375016242-32651-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Paolo Bonzini 2013-07-28 14:57:22 +02:00 committed by Anthony Liguori
parent 8cdd2e0abb
commit 55d5d04884
2 changed files with 9 additions and 0 deletions
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5
memory.c
View File

@ -19,6 +19,7 @@
#include "qemu/bitops.h"
#include "qom/object.h"
#include "sysemu/kvm.h"
#include "trace.h"
#include <assert.h>
#include "exec/memory-internal.h"
@ -388,6 +389,7 @@ static void memory_region_oldmmio_read_accessor(MemoryRegion *mr,
uint64_t tmp;
tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
trace_memory_region_ops_read(mr, addr, tmp, size);
*value |= (tmp & mask) << shift;
}
@ -404,6 +406,7 @@ static void memory_region_read_accessor(MemoryRegion *mr,
qemu_flush_coalesced_mmio_buffer();
}
tmp = mr->ops->read(mr->opaque, addr, size);
trace_memory_region_ops_read(mr, addr, tmp, size);
*value |= (tmp & mask) << shift;
}
@ -417,6 +420,7 @@ static void memory_region_oldmmio_write_accessor(MemoryRegion *mr,
uint64_t tmp;
tmp = (*value >> shift) & mask;
trace_memory_region_ops_write(mr, addr, tmp, size);
mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
}
@ -433,6 +437,7 @@ static void memory_region_write_accessor(MemoryRegion *mr,
qemu_flush_coalesced_mmio_buffer();
}
tmp = (*value >> shift) & mask;
trace_memory_region_ops_write(mr, addr, tmp, size);
mr->ops->write(mr->opaque, addr, tmp, size);
}

4
trace-events
View File

@ -1165,6 +1165,10 @@ kvm_vm_ioctl(int type, void *arg) "type %d, arg %p"
kvm_vcpu_ioctl(int cpu_index, int type, void *arg) "cpu_index %d, type %d, arg %p"
kvm_run_exit(int cpu_index, uint32_t reason) "cpu_index %d, reason %d"
# memory.c
memory_region_ops_read(void *mr, uint64_t addr, uint64_t value, unsigned size) "mr %p addr %#"PRIx64" value %#"PRIx64" size %u"
memory_region_ops_write(void *mr, uint64_t addr, uint64_t value, unsigned size) "mr %p addr %#"PRIx64" value %#"PRIx64" size %u"
# qom/object.c
object_dynamic_cast_assert(const char *type, const char *target, const char *file, int line, const char *func) "%s->%s (%s:%d:%s)"
object_class_dynamic_cast_assert(const char *type, const char *target, const char *file, int line, const char *func) "%s->%s (%s:%d:%s)"