mirror of
https://github.com/ksherlock/mpw.git
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121 lines
1.9 KiB
C++
121 lines
1.9 KiB
C++
#include "rm.h"
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#include "toolbox.h"
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#include <cpu/defs.h>
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#include <cpu/CpuModule.h>
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#include <cpu/fmem.h>
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#include <string>
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namespace
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{
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uint32_t PopLong()
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{
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uint32_t sp = cpuGetAReg(7);
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uint32_t value = memoryReadLong(sp);
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cpuSetAReg(7, sp + 4);
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return value;
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}
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uint16_t PopWord()
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{
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uint32_t sp = cpuGetAReg(7);
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uint16_t value = memoryReadWord(sp);
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cpuSetAReg(7, sp + 2);
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return value;
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}
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uint32_t StackFrame(uint32_t &b, uint32_t &a)
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{
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uint32_t sp = cpuGetAReg(7);
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a = memoryReadLong(sp); sp += 4;
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b = memoryReadLong(sp); sp += 4;
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cpuSetAReg(7, sp);
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return sp;
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}
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uint32_t StackFrame(uint32_t &b, uint16_t &a)
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{
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uint32_t sp = cpuGetAReg(7);
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a = memoryReadWord(sp); sp += 2;
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b = memoryReadLong(sp); sp += 4;
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cpuSetAReg(7, sp);
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return sp;
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}
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void ToolReturn(uint32_t sp, uint32_t value)
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{
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memoryWriteLong(value, sp);
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}
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}
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namespace RM
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{
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uint16_t Get1NamedResource(uint16_t trap)
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{
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// Get1NamedResource (theType: ResType; name: Str255) : Handle;
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/*
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* -----------
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* +8 outHandle
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* ------------
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* +4 theType
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* ------------
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* +0 name
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* ------------
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*
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*/
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// nb - return address is not on the stack.
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uint32_t sp;
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uint32_t theType;
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uint32_t name;
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sp = StackFrame(theType, name);
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std::string sname = ToolBox::ReadPString(name);
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fprintf(stderr, "%04x Get1NamedResource(%08x, %s)\n", trap, theType, sname.c_str());
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ToolReturn(sp, (uint32_t)0);
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return -192;
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}
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uint16_t GetResource(uint16_t trap)
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{
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// GetResource (theType: ResType; theID: Integer): Handle;
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/*
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* -----------
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* +6 outHandle
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* ------------
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* +2 theType
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* ------------
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* +0 theID
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* ------------
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*
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*/
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// nb - return address is not on the stack.
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uint32_t sp;
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uint32_t theType;
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uint16_t theID;
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sp = StackFrame(theType, theID);
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fprintf(stderr, "%04x GetResource(%08x, %04x)\n", trap, theType, theID);
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ToolReturn(sp, (uint32_t)0);
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return -192;
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}
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}
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