1 files changed, 133 insertions, 0 deletions
diff --git a/system_cmds/gcore.tproj/region.h b/system_cmds/gcore.tproj/region.h
new file mode 100644
index 0000000..77853b2
--- /dev/null
+++ b/system_cmds/gcore.tproj/region.h
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2016 Apple Inc.  All rights reserved.
+ */
+
+#include <sys/queue.h>
+#include <sys/types.h>
+#include <mach/mach.h>
+#include <uuid/uuid.h>
+
+#ifndef _REGION_H
+#define _REGION_H
+
+/*
+ * A range of virtual memory
+ */
+struct vm_range {
+	mach_vm_offset_t addr;
+	mach_vm_offset_t size;
+};
+
+#define _V_ADDR(g)		((g)->addr)
+#define _V_SIZE(g)		((g)->size)
+#define V_SETADDR(g, a)	((g)->addr = (a))
+#define V_SETSIZE(g, z)	((g)->size = (z))
+#define V_ENDADDR(g)	(_V_ADDR(g) + _V_SIZE(g))
+
+static __inline const mach_vm_offset_t V_ADDR(const struct vm_range *vr) {
+	return _V_ADDR(vr);
+}
+static __inline const mach_vm_offset_t V_SIZE(const struct vm_range *vr) {
+	return _V_SIZE(vr);
+}
+static __inline const size_t V_SIZEOF(const struct vm_range *vr) {
+    assert((typeof (vr->size))(size_t)_V_SIZE(vr) == _V_SIZE(vr));
+    return (size_t)_V_SIZE(vr);
+}
+
+/*
+ * A range of offsets into a file
+ */
+struct file_range {
+	off_t off;
+	off_t size;
+};
+
+#define F_OFF(f)		((f)->off)
+#define F_SIZE(f)		((f)->size)
+
+struct regionop;
+struct subregion;
+
+struct region {
+    STAILQ_ENTRY(region) r_linkage;
+
+	struct vm_range r_range;
+
+#define R_RANGE(r)		(&(r)->r_range)
+#define _R_ADDR(r)		_V_ADDR(R_RANGE(r))
+#define _R_SIZE(r)		_V_SIZE(R_RANGE(r))
+#define R_SIZEOF(r)     V_SIZEOF(R_RANGE(r))
+#define R_SETADDR(r, a)	V_SETADDR(R_RANGE(r), (a))
+#define R_SETSIZE(r, z)	V_SETSIZE(R_RANGE(r), (z))
+#define R_ENDADDR(r)	(_R_ADDR(r) + _R_SIZE(r))
+
+    vm_region_submap_info_data_64_t r_info;
+    vm_page_info_basic_data_t r_pageinfo;
+
+    int r_purgable;
+
+#ifdef CONFIG_SUBMAP
+    int r_depth;
+#endif
+    boolean_t r_insharedregion, r_inzfodregion, r_incommregion;
+
+    /*
+     * This field may be non-NULL if the region is a read-only part
+     * of a mapped file (i.e. the shared cache) and thus
+     * doesn't need to be copied.
+     */
+    struct {
+        const struct libent *fr_libent;
+		const char *fr_pathname;
+        off_t fr_offset;
+    } *r_fileref;
+
+    /*
+     * These (optional) fields are filled in after we parse the information
+     * about the dylibs we've mapped, as provided by dyld.
+     */
+    struct subregion **r_subregions;
+    unsigned r_nsubregions;
+
+    const struct regionop *r_op;
+};
+
+static __inline const mach_vm_offset_t R_ADDR(const struct region *r) {
+    return _R_ADDR(r);
+}
+static __inline const mach_vm_offset_t R_SIZE(const struct region *r) {
+    return _R_SIZE(r);
+}
+
+/*
+ * Describes the disposition of the region after a walker returns
+ */
+typedef enum {
+    WALK_CONTINUE,		// press on ..
+    WALK_DELETE_REGION,	// discard this region, then continue
+    WALK_TERMINATE,		// early termination, no error
+    WALK_ERROR,		// early termination, error
+} walk_return_t;
+
+struct size_core;
+struct write_segment_data;
+
+typedef walk_return_t walk_region_cbfn_t(struct region *, void *);
+
+struct regionop {
+    void (*rop_print)(const struct region *);
+    walk_return_t (*rop_write)(const struct region *, struct write_segment_data *);
+    void (*rop_delete)(struct region *);
+};
+
+#define ROP_PRINT(r)    (((r)->r_op->rop_print)(r))
+#define ROP_WRITE(r, w) (((r)->r_op->rop_write)(r, w))
+#define ROP_DELETE(r)   (((r)->r_op->rop_delete)(r))
+
+extern const struct regionop vanilla_ops, sparse_ops, zfod_ops;
+extern const struct regionop fileref_ops;
+
+struct regionhead;
+
+#endif /* _REGION_H */