mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-19 12:59:21 +08:00
Andy Koppe
3017f23f1c
Avoid ARM SWI Seek when querying file position
Issuing an ARM semi-hosting Seek command when just querying file position with SEEK_CUR and offset zero is unnecessary, because unlike the lseek() Unix system call the Seek command does not actually return the file position. For that reason, syscalls.c for ARM keeps track of file position in the 'poslog', so we can just return that. Moreover, since the Seek command only accepts an absolute file position, SEEK_CUR operations are implemented by adding the relative offset to the position in the poslog. If the host implements non-binary files with implicit carriage return characters but doesn't discount those implicit CRs when implementing Seek (by just mapping straight to Windows file operations), this actually ended up wrongly changing file position when using SEEK_CUR with offset zero or functions like ftell() or fgetpos() that are based on that. Also, use off_t rather than int for the poslog.
…
…
…
…
…
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.
Description
Languages
C
61.5%
Makefile
19.6%
C++
10.4%
Assembly
4.9%
M4
1%
Other
2.4%