mach_vm: add MachMakeMemoryEntry

Signed-off-by: Koichi Shiraishi <[email protected]>

Author: zchee

Diff for: mach_vm.go

@@ -3,7 +3,11 @@
 
 package mach
 
-import "github.com/go-darwin/sys"
+import (
+	"unsafe"
+
+	"github.com/go-darwin/sys"
+)
 
 //go:cgo_import_dynamic mach_vm_allocate mach_vm_allocate "/usr/lib/libSystem.B.dylib"
 
@@ -32,3 +36,17 @@ func MachVMDeallocate(target VMMap, address MachVMAddress, size MachVMSize) erro
 
 	return nil
 }
+
+//go:cgo_import_dynamic mach_make_memory_entry _mach_make_memory_entry "/usr/lib/libSystem.B.dylib"
+
+var mach_make_memory_entry_trampoline_addr uintptr
+
+// MachMakeMemoryEntry allow pagers to create named entries that point to un-mapped abstract memory object.
+func MachMakeMemoryEntry(targetTask VMMap, size *MemoryObjectSize, offset MemoryObjectOffset, permission VMProt, objectHandle *MemEntryNamePort, parentHandle MemEntryNamePort) error {
+	_, _, errno := sys.Ccall9(mach_make_memory_entry_trampoline_addr, uintptr(targetTask), uintptr(unsafe.Pointer(&size)), uintptr(offset), uintptr(permission), uintptr(unsafe.Pointer(&objectHandle)), uintptr(parentHandle), 0, 0, 0)
+	if errno != 0 {
+		return sys.KernReturn(errno)
+	}
+
+	return nil
+}

Diff for: mach_vm.s

@@ -17,3 +17,9 @@ DATA ·mach_vm_deallocate_trampoline_addr(SB)/8, $mach_vm_deallocate_trampoline<
 
 TEXT mach_vm_deallocate_trampoline<>(SB), NOSPLIT, $0-0
 	JMP mach_vm_deallocate(SB)
+
+GLOBL ·mach_make_memory_entry_trampoline_addr(SB), RODATA, $8
+DATA ·mach_make_memory_entry_trampoline_addr(SB)/8, $mach_make_memory_entry_trampoline<>(SB)
+
+TEXT mach_make_memory_entry_trampoline<>(SB), NOSPLIT, $0-0
+	JMP mach_make_memory_entry(SB)

Diff for: types_darwin_amd64.go

@@ -435,6 +435,9 @@ type (
 	MachVoucherAttrKey            = C.mach_voucher_attr_key_t
 	MachVoucherAttrRawRecipe      = C.mach_voucher_attr_raw_recipe_t
 	MachVoucherAttrRawRecipeArray = C.mach_voucher_attr_raw_recipe_array_t
+	MemEntryNamePort              = C.mem_entry_name_port_t
+	MemoryObjectOffset            = C.memory_object_offset_t
+	MemoryObjectSize              = C.memory_object_size_t
 	Natural                       = C.natural_t
 	SleepType                     = C.sleep_type_t
 	ThreadPort                    = C.thread_port_t