fix x86_32 old_mmap syscall

lunixbochs · Apr 23, 2018 · 40187a3 · 40187a3
1 parent e3f6c4d
commit 40187a3
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/go/arch/x86/linux.go b/go/arch/x86/linux.go
@@ -1,6 +1,7 @@
 package x86
 
 import (
+	"fmt"
 	"github.com/lunixbochs/ghostrace/ghost/sys/num"
 	uc "github.com/unicorn-engine/unicorn/bindings/go/unicorn"
 
@@ -90,6 +91,22 @@ func (k *LinuxKernel) gdtWrite(sel, base, limit, access, flags uint32) error {
 	return s.Error
 }
 
+type mmapArgs struct {
+	Args []uint64 `struc:"[6]size_t"`
+}
+
+func (k *LinuxKernel) Mmap(buf co.Buf) uint64 {
+	var args mmapArgs
+	if err := buf.Unpack(&args); err != nil {
+		return posix.UINT64_MAX // FIXME
+	}
+	results, err := k.Argjoy.Call(k.PosixKernel.Mmap, args.Args)
+	if err != nil {
+		panic(fmt.Sprintf("LinuxKernel.Mmap(): %v", err))
+	}
+	return results[0].(uint64)
+}
+
 func (k *LinuxKernel) Socketcall(index int, params co.Buf) uint64 {
 	if name, ok := socketCallMap[index]; ok {
 		if sys := co.Lookup(k.U, k, name); sys != nil {