mirror of
https://github.com/ksherlock/mpw.git
synced 2024-06-06 19:29:45 +00:00
230 lines
4.2 KiB
C++
230 lines
4.2 KiB
C++
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#include "mpw.h"
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#include "mpw_internal.h"
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#include "mpw_errno.h"
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#include <algorithm>
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#include <memory>
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#include <string>
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#include <cstdio>
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#include <cstring>
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#include <cerrno>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/paths.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 <toolbox/os.h>
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namespace MPW
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{
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using namespace Internal;
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uint32_t ftrap_dup(uint32_t parm, uint32_t arg)
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{
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uint32_t d0;
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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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int fd = f.cookie;
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if (fd < 0 || fd >= FDTable.size() || !FDTable[fd])
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{
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d0 = kEINVAL; // & 0x40000000 ?
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f.error = 0;
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}
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else
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{
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FDTable[fd]++;
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d0 = 0;
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f.error = 0;
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}
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memoryWriteWord(f.error, parm + 2);
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return d0;
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}
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uint32_t ftrap_bufsize(uint32_t parm, uint32_t arg)
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{
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// should return the preferred buffsize in *arg
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// an error will use the default size (0x400 bytes).
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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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f.error = 0;
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memoryWriteWord(f.error, parm + 2);
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return kEINVAL;
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}
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uint32_t ftrap_interactive(uint32_t parm, uint32_t arg)
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{
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// return 0 if interactive, an error if
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// non-interactive.
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uint32_t d0;
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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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f.error = 0;
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int fd = f.cookie;
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if (fd < 0 || fd >= FDTable.size() || !FDTable[fd])
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{
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d0 = kEINVAL;
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}
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else
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{
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int tty = ::isatty(fd);
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d0 = tty ? 0 : kEINVAL;
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}
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memoryWriteWord(f.error, parm + 2);
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return kEINVAL;
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}
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uint32_t ftrap_iofname(uint32_t parm, uint32_t arg)
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{
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// return file name.
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// AsmIIgs uses this...
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memoryWriteWord(0, parm + 2);
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return kEINVAL;
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}
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uint32_t ftrap_lseek(uint32_t parm, uint32_t arg)
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{
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MPWFile f;
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uint32_t d0;
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uint32_t whence = memoryReadLong(arg);
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int32_t offset =memoryReadLong(arg + 4);
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int nativeWhence = 0;
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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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int fd = f.cookie;
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// TODO - MacOS returns eofERR and sets mark to eof
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// if seeking past the eof.
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// TODO - MacOS treats offset as a signed value, unix is unsigned [?]
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switch (whence)
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{
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case kSEEK_CUR:
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nativeWhence = SEEK_CUR;
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break;
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case kSEEK_END:
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nativeWhence = SEEK_END;
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break;
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case kSEEK_SET:
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nativeWhence = SEEK_SET;
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break;
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default:
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memoryWriteWord(0, parm + 2);
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return kEINVAL;
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}
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fprintf(stderr, " seek(%02x, %08x, %02x)\n", fd, offset, nativeWhence);
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off_t rv = ::lseek(fd, offset, nativeWhence);
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if (rv < 0)
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{
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d0 = errno_to_errno(errno);
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f.error = 0;
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}
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else
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{
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d0 = 0;
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f.error = 0;
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}
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memoryWriteLong(rv, arg + 4);
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memoryWriteWord(f.error, parm + 2);
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return d0;
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}
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void ftrap_ioctl(uint16_t trap)
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{
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// returns an mpw_errno in d0 [???]
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// int ioctl(int fildes, unsigned int cmd, long *arg);
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uint32_t d0;
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uint32_t sp = cpuGetAReg(7);
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uint32_t fd = memoryReadLong(sp + 4);
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uint32_t cmd = memoryReadLong(sp + 8);
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uint32_t arg = memoryReadLong(sp + 12);
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fprintf(stderr, "%04x IOCtl(%08x, %08x, %08x)\n", trap, fd, cmd, arg);
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switch (cmd)
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{
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case kFIOLSEEK:
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d0 = ftrap_lseek(fd, arg);
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break;
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case kFIODUPFD:
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d0 = ftrap_dup(fd, arg);
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break;
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case kFIOBUFSIZE:
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d0 = ftrap_bufsize(fd, arg);
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break;
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case kFIOINTERACTIVE:
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d0 = ftrap_interactive(fd, arg);
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break;
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case kFIOFNAME:
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d0 = ftrap_iofname(fd, arg);
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break;
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case kFIOREFNUM:
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case kFIOSETEOF:
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fprintf(stderr, "ioctl - unsupported op %04x\n", cmd);
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exit(1);
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break;
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}
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cpuSetDReg(0, d0);
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}
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}
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