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Add BlockMove

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This commit is contained in:
Kelvin Sherlock 2013-02-07 23:44:58 -05:00
parent cb519a626a
commit 9687f1c387
3 changed files with 50 additions and 5 deletions
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49
toolbox/mm.cpp
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@ -73,19 +73,58 @@ namespace MM
return true;
}
uint16_t NewPtr(uint16_t trap)
uint16_t BlockMove(uint16_t trap)
{
/* on entry:
* A0 Number of logical bytes requested
/*
* on entry:
* A0 Pointer to source
* A1 Pointer to destination
* D0 Number of bytes to copy
*
* on exit:
* A0 Address of the new block or NIL
* D0 Result code
*
*/
uint32_t source = cpuGetAReg(0);
uint32_t dest = cpuGetAReg(1);
uint32_t count = cpuGetDReg(0);
fprintf(stderr, "%04x BlockMove(%08x, %08x, %08x)\n",
trap, source, dest, count);
// TODO -- 32-bit clean?
// TODO -- verify within MemorySize?
#if 0
if (source == 0 || dest == 0 || count == 0)
return 0;
#endif
std::memmove(Memory + dest, Memory + source, count);
return 0;
}
uint16_t NewPtr(uint16_t trap)
{
/*
* on entry:
* D0 Number of logical bytes requested
*
* on exit:
* A0 Address of the new block or NIL
* D0 Result code
*
*/
bool clear = trap & (1 << 9);
bool sys = trap & (1 << 10);
//bool sys = trap & (1 << 10);
uint32_t size = cpuGetAReg(0);
uint32_t size = cpuGetDReg(0);
fprintf(stderr, "%04x NewPtr(%08x)\n", trap, size);

1
toolbox/mm.h
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@ -12,6 +12,7 @@ namespace MM
bool Init(uint8_t *memory, uint32_t memorySize, uint32_t reserved);
uint16_t BlockMove(uint16_t trap);
uint16_t NewPtr(uint16_t trap);
}

5
toolbox/toolbox.cpp
View File

@ -23,6 +23,11 @@ namespace ToolBox {
switch (trap)
{
// BlockMove (sourcePtr,destPtr: Ptr; byteCount: Size);
case 0xa02e:
d0 = MM::BlockMove(trap);
break;
// NewPtr [Sys, Clear] (logicalSize: Size): Ptr;
case 0xa11e:
case 0xa31e: