Added support for 64-bit returns from syscalls

- Also added SYS_GETPHYS

diff --git a/Kernel/syscalls.c b/Kernel/syscalls.c
index 84c9a92..ddcdfa2 100644 (file)
--- a/Kernel/syscalls.c
+++ b/Kernel/syscalls.c
@@ -19,7 +19,8 @@ extern Uint   Binary_Load(char *file, Uint *entryPoint);
 // === CODE ===
 void SyscallHandler(tSyscallRegs *Regs)
 {
-       Uint    ret=0, err=0;
+       Uint64  ret = 0;
+       Uint    err = 0;
        #if DEBUG
        ENTER("iThread iNum", gCurrentThread->TID, Regs->Num);
        if(Regs->Num < NUM_SYSCALLS)
@@ -52,6 +53,9 @@ void SyscallHandler(tSyscallRegs *Regs)
                ret = -1;
                break;
        
+       case SYS_GETPHYS:
+               ret = MM_GetPhysAddr(Regs->Arg1);
+               break;
        // -- Map an address
        case SYS_MAP:   MM_Map(Regs->Arg1, Regs->Arg2); break;
        // -- Allocate an address
@@ -144,7 +148,12 @@ void SyscallHandler(tSyscallRegs *Regs)
                ret = -1;
                break;
        }
+       #if BITS < 64
+       Regs->Return = ret&0xFFFFFFFF;
+       Regs->RetHi = ret >> 32;
+       #else
        Regs->Return = ret;
+       #endif
        Regs->Error = err;
        #if DEBUG
        LOG("SyscallHandler: err = %i", err);