Commit 55d5d048 authored by Paolo Bonzini's avatar Paolo Bonzini Committed by Anthony Liguori
Browse files

memory: add tracepoints for MMIO reads/writes 



This is quite handy to debug softmmu targets.

Reviewed-by: default avatarAndreas Faerber <afaerber@suse.de>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1375016242-32651-1-git-send-email-pbonzini@redhat.com
Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
parent 8cdd2e0a

memory.c

+5 −0
Original line number Diff line number Diff line
@@ -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);

}

trace-events

+4 −0
Original line number Diff line number Diff line
@@ -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)"