mirror of
https://github.com/ksherlock/mpw.git
synced 2024-12-23 06:30:19 +00:00
112 lines
2.2 KiB
C++
112 lines
2.2 KiB
C++
#include "utility.h"
|
|
#include "toolbox.h"
|
|
#include "mm.h"
|
|
#include "rm.h"
|
|
|
|
#include <cpu/defs.h>
|
|
#include <cpu/CpuModule.h>
|
|
#include <cpu/fmem.h>
|
|
|
|
#include "stackframe.h"
|
|
|
|
using ToolBox::Log;
|
|
|
|
namespace Utility {
|
|
|
|
|
|
// FUNCTION NewString (theString: Str255): StringHandle;
|
|
uint16_t NewString(uint16_t trap)
|
|
{
|
|
/*
|
|
* NewString allocates the specified string as a relocatable object
|
|
* in the heap and returns a handle to it.
|
|
*/
|
|
|
|
uint32_t theString;
|
|
uint32_t theHandle;
|
|
uint32_t sp;
|
|
uint32_t length = 0;
|
|
uint32_t d0;
|
|
|
|
std::string s;
|
|
|
|
sp = StackFrame<4>(theString);
|
|
|
|
s = ToolBox::ReadPString(theString);
|
|
|
|
Log("%04x NewString(%s)\n", trap, s.c_str());
|
|
|
|
length = s.length() + 1;
|
|
|
|
// if (length) // always true...
|
|
{
|
|
uint32_t ptr;
|
|
d0 = MM::Native::NewHandle(s.length(), false, theHandle, ptr);
|
|
|
|
if (!d0)
|
|
{
|
|
ToolBox::WritePString(ptr, s);
|
|
}
|
|
}
|
|
|
|
ToolReturn<4>(sp, theHandle);
|
|
return d0;
|
|
}
|
|
|
|
// FUNCTION GetString (stringID: Integer): StringHandle;
|
|
uint16_t GetString(uint16_t trap)
|
|
{
|
|
/*
|
|
* The GetString function loads a string from a string ('STR ')
|
|
* resource into memory. It returns a handle to the string with the
|
|
* specified resource ID, reading it from the resource file if
|
|
* necessary.
|
|
*/
|
|
|
|
uint16_t stringID;
|
|
uint32_t sp;
|
|
uint32_t d0;
|
|
uint32_t theHandle;
|
|
|
|
sp = StackFrame<2>(stringID);
|
|
|
|
Log("%04x GetString($%04x)\n", trap, stringID);
|
|
|
|
d0 = RM::Native::GetResource(0x53545220, stringID, theHandle);
|
|
|
|
ToolReturn<4>(sp, theHandle);
|
|
return d0;
|
|
}
|
|
|
|
// FUNCTION BitTst (bytePtr: Ptr; bitNum: LONGINT) : BOOLEAN;
|
|
uint16_t BitTst(uint16_t trap)
|
|
{
|
|
/*
|
|
* BitTst tests whether a given bit is set and returns TRUE if so or
|
|
* FALSE if not. The bit is specified by bitNum, an offset from the
|
|
* high-order bit of the byte pointed to by bytePtr.
|
|
*/
|
|
|
|
uint32_t bytePtr;
|
|
uint32_t bitNum;
|
|
uint16_t rv;
|
|
uint32_t sp;
|
|
|
|
sp = StackFrame<8>(bytePtr, bitNum);
|
|
Log("%04x BitTst($%08x, $%08x)\n", trap, bytePtr, bitNum);
|
|
|
|
|
|
uint32_t offset = bitNum >> 3;
|
|
int mask = 0x80 >> (bitNum & 0x07);
|
|
|
|
uint32_t value = memoryReadByte(bytePtr + offset);
|
|
|
|
rv = value & mask ? 1 : 0;
|
|
ToolReturn<2>(sp, rv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
}
|