mirror of
https://github.com/ksherlock/mpw.git
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118 lines
2.1 KiB
C++
118 lines
2.1 KiB
C++
#include "mpw.h"
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#include "mpw_internal.h"
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#include <algorithm>
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#include <memory>
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#include <cerrno>
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#include <cstdio>
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#include <unistd.h>
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#include <cpu/defs.h>
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#include <cpu/fmem.h>
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#include <cpu/cpuModule.h>
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#include <macos/errors.h>
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#include <toolbox/os.h>
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#include <toolbox/os_internal.h>
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namespace MPW
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{
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void ftrap_read(uint16_t trap)
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{
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uint32_t d0;
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uint32_t sp = cpuGetAReg(7);
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uint32_t parm = memoryReadLong(sp + 4);
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MPWFile f;
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f.flags = memoryReadWord(parm);
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f.error = memoryReadWord(parm + 2);
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f.device = memoryReadLong(parm + 4);
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f.cookie = memoryReadLong(parm + 8);
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f.count = memoryReadLong(parm + 12);
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f.buffer = memoryReadLong(parm + 16);
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Log("%04x Read(%08x)\n", trap, parm);
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d0 = 0;
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int fd = f.cookie;
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ssize_t size;
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Log(" read(%04x, %08x, %08x)", fd, f.buffer, f.count);
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size = OS::Internal::FDEntry::read(fd, memoryPointer(f.buffer), f.count);
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//Log(" -> %ld\n", size);
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if (size < 0)
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{
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//f.count = 0;
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f.error = MacOS::ioErr; // ioErr
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d0 = errno_to_errno(errno);
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}
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else
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{
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f.count -= size;
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f.error = 0;
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}
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// write back...
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memoryWriteWord(f.error, parm + 2);
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memoryWriteLong(f.count, parm + 12);
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cpuSetDReg(0, d0);
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}
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void ftrap_write(uint16_t trap)
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{
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uint32_t d0;
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uint32_t sp = cpuGetAReg(7);
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uint32_t parm = memoryReadLong(sp + 4);
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MPWFile f;
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f.flags = memoryReadWord(parm);
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f.error = memoryReadWord(parm + 2);
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f.device = memoryReadLong(parm + 4);
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f.cookie = memoryReadLong(parm + 8);
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f.count = memoryReadLong(parm + 12);
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f.buffer = memoryReadLong(parm + 16);
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Log("%04x Write(%08x)\n", trap, parm);
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d0 = 0;
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int fd = f.cookie;
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ssize_t size;
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Log(" write(%04x, %08x, %08x)\n", fd, f.buffer, f.count);
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size = OS::Internal::FDEntry::write(fd, memoryPointer(f.buffer), f.count);
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if (size < 0)
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{
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//f.count = 0;
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f.error = MacOS::ioErr; // ioErr
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d0 = errno_to_errno(errno);
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}
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else
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{
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f.count -= size;
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f.error = 0;
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}
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// write back...
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memoryWriteWord(f.error, parm + 2);
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memoryWriteLong(f.count, parm + 12);
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cpuSetDReg(0, d0);
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}
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} |