X-Git-Url: http://git.subgeniuskitty.com/pforth/.git/blobdiff_plain/82b409b0854d22efe9bbf8b2e7c2d003ab06e2e3..1f99f95d6a7eecc05cae8fb357f9b7bf564c2725:/csrc/pf_inner.c diff --git a/csrc/pf_inner.c b/csrc/pf_inner.c index 06466c7..fc1d7e4 100644 --- a/csrc/pf_inner.c +++ b/csrc/pf_inner.c @@ -5,14 +5,17 @@ ** Author: Phil Burk ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom ** -** The pForth software code is dedicated to the public domain, -** and any third party may reproduce, distribute and modify -** the pForth software code or any derivative works thereof -** without any compensation or license. The pForth software -** code is provided on an "as is" basis without any warranty -** of any kind, including, without limitation, the implied -** warranties of merchantability and fitness for a particular -** purpose and their equivalents under the laws of any jurisdiction. +** Permission to use, copy, modify, and/or distribute this +** software for any purpose with or without fee is hereby granted. +** +** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL +** WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED +** WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL +** THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR +** CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING +** FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF +** CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +** OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ** **************************************************************** ** @@ -26,12 +29,6 @@ ** ***************************************************************/ -#ifndef AMIGA -#include -#else -typedef long off_t; -#endif - #include "pf_all.h" #if defined(WIN32) && !defined(__MINGW32__) @@ -55,6 +52,7 @@ typedef long off_t; #define M_DUP PUSH_TOS; #define M_DROP { TOS = M_POP; } +#define ASCII_EOT (0x04) /*************************************************************** ** Macros for Floating Point stack access. @@ -199,11 +197,29 @@ static void TraceNames( ExecToken Token, cell_t Level ) /* Use local copy of CODE_BASE for speed. */ #define LOCAL_CODEREL_TO_ABS( a ) ((cell_t *) (((cell_t) a) + CodeBase)) -static const char *pfSelectFileModeCreate( int fam ); -static const char *pfSelectFileModeOpen( int fam ); +/* Truncate the unsigned double cell integer LO/HI to an uint64_t. */ +static uint64_t UdToUint64( ucell_t Lo, ucell_t Hi ) +{ + return (( 2 * sizeof(ucell_t) == sizeof(uint64_t) ) + ? (((uint64_t)Lo) | (((uint64_t)Hi) >> (sizeof(ucell_t) * 8))) + : Lo); +} + +/* Return TRUE if the unsigned double cell integer LO/HI is not greater + * then the greatest uint64_t. + */ +static int UdIsUint64( ucell_t Lo, ucell_t Hi ) +{ + return (( 2 * sizeof(ucell_t) == sizeof(uint64_t) ) + ? TRUE + : Hi == 0); +} + +static const char *pfSelectFileModeCreate( cell_t fam ); +static const char *pfSelectFileModeOpen( cell_t fam ); /**************************************************************/ -static const char *pfSelectFileModeCreate( int fam ) +static const char *pfSelectFileModeCreate( cell_t fam ) { const char *famText = NULL; switch( fam ) @@ -228,7 +244,7 @@ static const char *pfSelectFileModeCreate( int fam ) } /**************************************************************/ -static const char *pfSelectFileModeOpen( int fam ) +static const char *pfSelectFileModeOpen( cell_t fam ) { const char *famText = NULL; switch( fam ) @@ -257,7 +273,7 @@ static const char *pfSelectFileModeOpen( int fam ) } /**************************************************************/ -int pfCatch( ExecToken XT ) +ThrowCode pfCatch( ExecToken XT ) { register cell_t TopOfStack; /* Cache for faster execution. */ register cell_t *DataStackPtr; @@ -490,6 +506,7 @@ DBUGX(("After Branch: IP = 0x%x\n", InsPtr )); endcase; case ID_BYE: + EMIT_CR; M_THROW( THROW_BYE ); endcase; @@ -732,8 +749,8 @@ DBUGX(("After Branch: IP = 0x%x\n", InsPtr )); /* Calculate product sign: */ sg = ((cell_t)(ahi ^ bhi) < 0); /* Take absolute values and reduce to um* */ - if ((cell_t)ahi < 0) ahi = (ucell_t)(-ahi); - if ((cell_t)bhi < 0) bhi = (ucell_t)(-bhi); + if ((cell_t)ahi < 0) ahi = (ucell_t)(-(cell_t)ahi); + if ((cell_t)bhi < 0) bhi = (ucell_t)(-(cell_t)bhi); /* Break into hi and lo 16 bit parts. */ alo = LOWER_HALF(ahi); @@ -1017,24 +1034,38 @@ DBUG(("XX ah,m,l = 0x%8x,%8x,%8x - qh,l = 0x%8x,%8x\n", ah,am,al, qh,ql )); Scratch = M_POP; CharPtr = (char *) M_POP; Temp = sdReadFile( CharPtr, 1, Scratch, FileID ); + /* TODO check feof() or ferror() */ M_PUSH(Temp); TOS = 0; endcase; + /* TODO Why does this crash when passed an illegal FID? */ case ID_FILE_SIZE: /* ( fid -- ud ior ) */ /* Determine file size by seeking to end and returning position. */ FileID = (FileStream *) TOS; { - off_t endposition, offsetHi; - off_t original = sdTellFile( FileID ); - sdSeekFile( FileID, 0, PF_SEEK_END ); - endposition = sdTellFile( FileID ); - M_PUSH(endposition); - /* Just use a 0 if they are the same size. */ - offsetHi = (sizeof(off_t) > sizeof(cell_t)) ? (endposition >> (8*sizeof(cell_t))) : 0 ; - M_PUSH(offsetHi); - sdSeekFile( FileID, original, PF_SEEK_SET ); - TOS = (original < 0) ? -4 : 0 ; /* !!! err num */ + file_offset_t endposition = -1; + file_offset_t original = sdTellFile( FileID ); + if (original >= 0) + { + sdSeekFile( FileID, 0, PF_SEEK_END ); + endposition = sdTellFile( FileID ); + /* Restore original position. */ + sdSeekFile( FileID, original, PF_SEEK_SET ); + } + if (endposition < 0) + { + M_PUSH(0); /* low */ + M_PUSH(0); /* high */ + TOS = -4; /* TODO proper error number */ + } + else + { + M_PUSH(endposition); /* low */ + /* We do not support double precision file offsets.*/ + M_PUSH(0); /* high */ + TOS = 0; /* OK */ + } } endcase; @@ -1048,27 +1079,43 @@ DBUG(("XX ah,m,l = 0x%8x,%8x,%8x - qh,l = 0x%8x,%8x\n", ah,am,al, qh,ql )); case ID_FILE_REPOSITION: /* ( ud fid -- ior ) */ { - off_t offset; + file_offset_t offset; + cell_t offsetHigh; + cell_t offsetLow; FileID = (FileStream *) TOS; - offset = M_POP; - /* Avoid compiler warnings on Mac. */ - offset = (sizeof(off_t) > sizeof(cell_t)) ? (offset << 8*sizeof(cell_t)) : 0 ; - offset += M_POP; + offsetHigh = M_POP; + offsetLow = M_POP; + /* We do not support double precision file offsets in pForth. + * So check to make sure the high bits are not used. + */ + if (offsetHigh != 0) + { + TOS = -3; /* TODO err num? */ + break; + } + offset = (file_offset_t)offsetLow; TOS = sdSeekFile( FileID, offset, PF_SEEK_SET ); } endcase; case ID_FILE_POSITION: /* ( fid -- ud ior ) */ { - off_t position; - off_t offsetHi; + file_offset_t position; FileID = (FileStream *) TOS; position = sdTellFile( FileID ); - M_PUSH(position); - /* Just use a 0 if they are the same size. */ - offsetHi = (sizeof(off_t) > sizeof(cell_t)) ? (position >> (8*sizeof(cell_t))) : 0 ; - M_PUSH(offsetHi); - TOS = (position < 0) ? -4 : 0 ; /* !!! err num */ + if (position < 0) + { + M_PUSH(0); /* low */ + M_PUSH(0); /* high */ + TOS = -4; /* TODO proper error number */ + } + else + { + M_PUSH(position); /* low */ + /* We do not support double precision file offsets.*/ + M_PUSH(0); /* high */ + TOS = 0; /* OK */ + } } endcase; @@ -1098,6 +1145,25 @@ DBUG(("XX ah,m,l = 0x%8x,%8x,%8x - qh,l = 0x%8x,%8x\n", ah,am,al, qh,ql )); } endcase; + case ID_FILE_RENAME: /* ( oldName newName -- ior ) */ + { + char *New = (char *) TOS; + char *Old = (char *) M_POP; + TOS = sdRenameFile( Old, New ); + } + endcase; + + case ID_FILE_RESIZE: /* ( ud fileid -- ior ) */ + { + FileStream *File = (FileStream *) TOS; + ucell_t SizeHi = (ucell_t) M_POP; + ucell_t SizeLo = (ucell_t) M_POP; + TOS = ( UdIsUint64( SizeLo, SizeHi ) + ? sdResizeFile( File, UdToUint64( SizeLo, SizeHi )) + : THROW_RESIZE_FILE ); + } + endcase; + case ID_FILL: /* ( caddr num charval -- ) */ { register char *DstPtr; @@ -1202,6 +1268,9 @@ DBUG(("XX ah,m,l = 0x%8x,%8x,%8x - qh,l = 0x%8x,%8x\n", ah,am,al, qh,ql )); case ID_KEY: PUSH_TOS; TOS = ioKey(); + if (TOS == ASCII_EOT) { + M_THROW(THROW_BYE); + } endcase; #ifndef PF_NO_SHELL