[Qemu-devel] [PATCH 2/3] libqos: Add malloc generic

["Marc Marí" <marc.mari.barcelo@gmail.com>]

This malloc is a basic interface implementation that works for any platform.
It should be replaced in the future for a real malloc implementation for each
of the platforms.

Signed-off-by: Marc Marí <marc.mari.barcelo@gmail.com>
---
 tests/libqos/malloc-generic.c |   54 +++++++++++++++++++++++++++++++++++++++++
 tests/libqos/malloc-generic.h |   18 ++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100644 tests/libqos/malloc-generic.c
 create mode 100644 tests/libqos/malloc-generic.h

diff --git a/tests/libqos/malloc-generic.c b/tests/libqos/malloc-generic.c
new file mode 100644
index 0000000..32f9bb4
--- /dev/null
+++ b/tests/libqos/malloc-generic.c
@@ -0,0 +1,54 @@
+/*
+ * Basic libqos generic malloc support
+ *
+ * Copyright (c) 2014 Marc Marí
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "libqos/malloc-generic.h"
+#include <glib.h>
+
+typedef struct GENAlloc {
+    QGuestAllocator alloc;
+
+    uint64_t start;
+    uint64_t end;
+    uint32_t page_size;
+} GENAlloc;
+
+static uint64_t generic_alloc(QGuestAllocator *allocator, size_t size)
+{
+    GENAlloc *s = (GENAlloc *)allocator;
+    uint64_t addr;
+
+    size += (s->page_size - 1);
+    size &= -s->page_size;
+
+    g_assert_cmpint((s->start + size), <=, s->end);
+
+    addr = s->start;
+    s->start += size;
+
+    return addr;
+}
+
+static void generic_free(QGuestAllocator *allocator, uint64_t addr)
+{
+}
+
+QGuestAllocator *generic_alloc_init(uint64_t base_addr, uint64_t size,
+                                                            uint32_t page_size)
+{
+    GENAlloc *s = g_malloc0(sizeof(*s));
+
+    s->alloc.alloc = generic_alloc;
+    s->alloc.free = generic_free;
+
+    s->page_size = page_size;
+    s->start = base_addr;
+    s->end = base_addr + size;
+
+    return &s->alloc;
+}
diff --git a/tests/libqos/malloc-generic.h b/tests/libqos/malloc-generic.h
new file mode 100644
index 0000000..7bf9f80
--- /dev/null
+++ b/tests/libqos/malloc-generic.h
@@ -0,0 +1,18 @@
+/*
+ * Basic libqos generic malloc support
+ *
+ * Copyright (c) 2014 Marc Marí
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef LIBQOS_MALLOC_GENERIC_H
+#define LIBQOS_MALLOC_GENERIC_H
+
+#include "libqos/malloc.h"
+
+QGuestAllocator *generic_alloc_init(uint64_t base_addr, uint64_t size,
+                                                            uint32_t page_size);
+
+#endif
-- 
1.7.10.4