newlib-cygwin/libgloss/m68k/bdm-lseek.c

47 lines
1.5 KiB
C
Raw Normal View History

libgloss/ Merge from newlib-csl-20060320-branch: 2006-08-31 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-crt1.c: Call hardware_init_hook before copying initialized data. * m68k/Makefile.in (CF_BDM_SCRIPTS): Rename to CF_RAM_SCRIPTS. (CF_SCRIPTS): Update. (%-bdm.ld): Rename to %-ram.ld. 2006-08-25 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (DBUG_BSP, DBUG_OBJS): Remove. (BDM_CRT0): New. (BDM_OBJS): Add bdm-crt1.o. (BDM_OTHER_OBJS): Remove print.o putnum.o (CF_BOARDS): New. (CF_BDM_SCRIPTS): Generated name of ram scripts. (CF_ROM_SCRIPTS): Generated name of rom scripts. (CF_SCRIPTS): Adjust. (all): Add BDM_CRT0. (bdm-crt0.o, bdm-crt1.o): New targets. (bdm-isv.o): Remove. (m5208evb, m5213evb, m52235evb, m5235evb, m5273c3, m5282evb, m5329evb, m5485evb): New. (%-bdm.ld, %-rom.ld): New. Replace individual linker script rules. (install): Remove DBUG installs. * m68k/bdm-crt0.S: New. * m68k/bdm-crt1.c: New. * m68k/bdm-exit.c: Call __reset. * m68k/bdm-isv.c: Remove. * m68k/cf.sc: Adjust to produce either rom or ram images. * m68k/dbug-exit.S, m68k/dbug-inbyte.S, m68k/dbug-outbyte.S: Remove. 2006-07-24 Nathan Sidwell <nathan@codesourcery.com> Bug 844 * m68k/cf.sc: Set entry point to _start. * m68k/crt0.X (_start): New name for entrypoint (start): Weak alias for start. 2006-06-09 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-system.c (_system): Support system(NULL). 2006-06-08 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-system.c (_system): Properly encode non failure exit code. 2006-06-05 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (BDM_SYSOBJS): Remove bdm-inbyte.o. Add bdm-time.o. * m68k/bdm-close.c: Add copyright notice. * m68k/bdm-fstat.c: Add copyright notice. * m68k/bdm-gettimeofday.c: Add copyright notice. * m68k/bdm-inbyte.c: Remove. * m68k/bdm-isatty.c: Add copyright notice. * m68k/bdm-lseek.c: Add copyright notice. Fix &/| thinko. * m68k/bdm-open.c: Add copyright notice. * m68k/bdm-read.c: Add copyright notice. * m68k/bdm-rename.c: Add copyright notice. * m68k/bdm-stat.c: Add copyright notice. * m68k/bdm-system.c: Add copyright notice. * m68k/bdm-time.c: New. * m68k/bdm-unlink.c: Add copyright notice. * m68k/bdm-write.c: Add copyright notice. 2006-05-25 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (m52235-dbug.ld, m52235-bdm.ld): New scripts. 2006-05-24 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (BDM_SYSOBJS): Remove bdm-outbyte.o. * m68k/bdm-outbyte.c: Delete. * m68k/bdm-semihost.h (BDM_OUTBYTE): Mark as obsolete. 2006-05-22 Sandra Loosemore <sandra@codesourcery.com> * m68k/bdm-semihost.h: Add new constants for additional semihosting functions. Add new BDM_TRAP macro to encapsulate inline asm. * m68k/bdm-exit.c (_exit): Use new BDM_TRAP macro. * m68k/bdm-outbyte.c (outbyte): Ditto. * m68k/bdm-isrs.c, m68k/bdm-isv.c: Former BDM_TRAP now called BDM_TRAPNUM. * m68k/bdm-gdb.h, m68k/bdm-gdb.c: New files containing declarations and conversion functions for GDB's fileio protocol. * m68k/bdm-close.c: New file to define corresponding function. * m68k/bdm-fstat.c: Ditto. * m68k/bdm-gettimeofday.c: Ditto. * m68k/bdm-isatty.c: Ditto. * m68k/bdm-lseek.c: Ditto. * m68k/bdm-open.c: Ditto. * m68k/bdm-read.c: Ditto. * m68k/bdm-rename.c: Ditto. * m68k/bdm-stat.c: Ditto. * m68k/bdm-system.c: Ditto. * m68k/bdm-unlink.c: Ditto. * m68k/bdm-write.c Ditto. * m68k/Makefile.in: Add dependencies for new files. 2006-03-29 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-isv.c (software_init_hook): Fix trap numbering. * m68k/Makefile.in (CF_SCRIPTS): Add m5329 board. Reorder. (*-dbug.ld, *-bdm.ld): Add appropriate IO definition. (m5329evb-dbug.ld, m5329evb-bdm.ld): New. * cf.sc (GROUP): Revert previous change. Add IO library. * m68k/Makefile.in (BDM_BSP, BDM_OBJS, BDM_ISRS): New. (CF_SCRIPTS): Rename dbug scripts. Add bdm scripts. Add m5485 scripts. (all): Add new targets. (BDM_BSP): New target. (bdm-isv.o, bdm-exit.o, bdm-outbyte.o, bdm-semihost.o): New targets. (BDM_ISRS): New targets. (m5208evb.ld, m5213evb.ld, m5235evb.ld, m5272c3.ld, m5282evb.ld): Rename and adjust. (m5485evb-dbug): New. (m5208evb-bdm.ld, m5213evb-bdm.ld, m5235evb-bdm.ld, m5272c3-bdm.ld, m5282evb-bdm.ld, m5485evb-bdm.ld): New. (install): Add BDM_BSP. * m68k/bdm-exit.c: New * m68k/bdm-inbyte.c: New * m68k/bdm-outbyte.c: New * m68k/bdm-semihost.c: New * m68k/bdm-semihost.h: New * m68k/bdm-isrs.c: New. * m68k/bdm-isv.c: New. * dbug-cf.sc: Renamed to ... * cf.sc: ... here. Add bdm flexibility. Remove GROUP 2006-05-22 Sandra Loosemore <sandra@codesourcery.com> * m68k/bdm-semihost.h: Add new constants for additional semihosting functions. Add new BDM_TRAP macro to encapsulate inline asm. * m68k/bdm-exit.c (_exit): Use new BDM_TRAP macro. * m68k/bdm-outbyte.c (outbyte): Ditto. * m68k/bdm-isrs.c, m68k/bdm-isv.c: Former BDM_TRAP now called BDM_TRAPNUM. * m68k/bdm-gdb.h, m68k/bdm-gdb.c: New files containing declarations and conversion functions for GDB's fileio protocol. * m68k/bdm-close.c: New file to define corresponding function. * m68k/bdm-fstat.c: Ditto. * m68k/bdm-gettimeofday.c: Ditto. * m68k/bdm-isatty.c: Ditto. * m68k/bdm-lseek.c: Ditto. * m68k/bdm-open.c: Ditto. * m68k/bdm-read.c: Ditto. * m68k/bdm-rename.c: Ditto. * m68k/bdm-stat.c: Ditto. * m68k/bdm-system.c: Ditto. * m68k/bdm-unlink.c: Ditto. * m68k/bdm-write.c Ditto. * m68k/Makefile.in: Add dependencies for new files. newlib/ Merge from newlib-csl-20060320-branch: 2006-05-22 Sandra Loosemore <sandra@codesourcery.com> * configure.host: Tell it we have _rename and _system when building m68k-unknown-elf.
2006-09-01 13:41:06 +08:00
/*
* bdm-lseek.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include "bdm-semihost.h"
#include "bdm-gdb.h"
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
/*
* lseek -- reposition a file descriptor
* input parameters:
* 0 : file descriptor
* 1 : high word of offset
* 2 : low word of offset
* 3 : seek flag
* output parameters:
* 0 : high word of result
* 1 : low word of result
* 2 : errno
*/
off_t lseek (int fd, off_t offset, int whence)
{
gdb_parambuf_t parameters;
parameters[0] = (uint32_t) fd;
parameters[1] = (uint32_t) ((offset >> 32) & 0xffffffff);
parameters[2] = (uint32_t) (offset & 0xffffffff);
parameters[3] = convert_to_gdb_lseek_flags (whence);
BDM_TRAP (BDM_LSEEK, (uint32_t)parameters);
errno = convert_from_gdb_errno (parameters[2]);
return ((uint64_t)parameters[0] << 32) | ((uint64_t)parameters[1]);
}