mirror of
https://github.com/ksherlock/mpw.git
synced 2024-06-01 02:41:33 +00:00
384 lines
8.2 KiB
C++
384 lines
8.2 KiB
C++
/*
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* Copyright (c) 2013, Kelvin W Sherlock
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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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 <stdexcept>
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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 <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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using MacOS::macos_error_from_errno;
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namespace MPW
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{
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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 = 0;
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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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Log(" dup(%02x)\n", fd);
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auto ff = OS::Internal::find_file(fd);
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if (ff) {
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ff->refcount++;
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}
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else {
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d0 = kEBADF;
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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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uint32_t d0 = 0;
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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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Log(" bufsize(%02x)\n", fd);
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auto ff = OS::Internal::find_file(fd);
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if (ff) {
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d0 = kEINVAL;
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} else {
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d0 = kEBADF;
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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_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. arg is null.
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uint32_t d0 = 0;
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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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// linkgs reads from stdin and
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// doesn't work quite right when
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// this returns 0. So, don't.
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f.error = 0;
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int fd = f.cookie;
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Log(" interactive(%02x)\n", fd);
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auto ff = OS::Internal::find_file(fd);
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if (!ff) {
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d0 = kEBADF;
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} else if (!ff->interactive()) {
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f.error = d0 = MacOS::paramErr;
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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_fname(uint32_t parm, uint32_t arg)
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{
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// return file name (full path).
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// AsmIIgs uses this...
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// arg is a c-string ptr.
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uint32_t d0 = 0;
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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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Log(" fname(%02x)\n", fd);
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auto ff = OS::Internal::find_file(fd);
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if (ff) {
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f.error = d0 = MacOS::paramErr;
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} else {
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d0 = kEBADF;
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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_refnum(uint32_t parm, uint32_t arg)
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{
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// returns the refnum in *arg
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// on mpw, stdin/stdout/stderr return a param error.
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uint32_t d0 = 0;
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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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Log(" refnum(%02x)\n", fd);
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auto ff = OS::Internal::find_file(fd);
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if (ff) {
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if (ff->interactive()) f.error = d0 = MacOS::paramErr;
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else memoryWriteWord(fd, arg);
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} else {
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d0 = kEBADF;
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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_lseek(uint32_t parm, uint32_t arg)
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{
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uint32_t d0 = 0;
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MPWFile f;
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uint32_t whence = memoryReadLong(arg);
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int32_t offset = memoryReadLong(arg + 4); // signed value.
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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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f.error = 0;
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/*
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* LinkIIgs does a seek on stdin. If it doesn't cause an
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* error, then it attempts to read a list of files from stdin,
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* which causes problems.
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* (Get_Standard_Input -> fseek -> lseek -> ioctl )
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* to compensate, error out if isatty.
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*/
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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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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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int fd = f.cookie;
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Log(" lseek(%02x, %08x, %02x)\n", fd, offset, nativeWhence);
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off_t rv = - 1;
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auto ff = OS::Internal::find_file(fd);
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if (ff) {
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MacOS::tool_return<size_t> e(MacOS::noErr);
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if (ff->interactive()) e = MacOS::paramErr;
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else e = ff->seek(offset, nativeWhence);
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rv = e.value_or(-1);
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f.error = d0 = e.error();
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} else {
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d0 = kEBADF;
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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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uint32_t ftrap_seteof(uint32_t parm, uint32_t arg)
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{
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uint32_t d0 = 0;
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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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Log(" seteof(%02x, %08x)\n", fd, arg);
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auto ff = OS::Internal::find_file(fd);
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if (ff) {
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MacOS::tool_return<size_t> e(MacOS::noErr);
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if (ff->interactive()) e = MacOS::paramErr;
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else e = ff->set_eof(arg);
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f.error = d0 = e.error();
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} else {
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d0 = kEBADF;
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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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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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Log("%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_fname(fd, arg);
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break;
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case kFIOREFNUM:
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d0 = ftrap_refnum(fd, arg);
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break;
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case kFIOSETEOF:
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d0 = ftrap_seteof(fd, arg);
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break;
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default:
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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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