26de4c1ab1
The new test rck_e.e segfaults on PowerPC unless I make some changes. The inline code for _rck_ was wrong because it didn't allow the trap handler to return. _sig_ forgot to push the old trap handler. Move plat/linuxppc/libsys/trap.s to mach/powerpc/libem/trp.s and rewrite it with simplified/extended mnemonics. Remove .trap alias for .trp procedure. Add a missing `mtspr lr, r0` so we can return from the trap handler. Call write() and _exit() so trp.s works with both linuxppc and osxppc. Before, Mac OS X was wrongly using the trap.s for Linux. In powerpc/libem, simplify .aar4; teach .csa and .csb to raise the trap if the default target is zero. C programs don't need these changes. You may relink your C programs with the changed .csa and .csb, but C code doesn't raise the trap. Modula-2 code can raise traps, so you may want to relink your Modula-2 programs with the changed libem, but you might keep your old .o files from Modula-2. You may need to recompile your Pascal programs (delete old .o files from Pascal) because the Pascal compiler might use _rck_. |
||
|---|---|---|
| .. | ||
| include | ||
| libsys | ||
| tests | ||
| boot.s | ||
| build-pkg.lua | ||
| build-tools.lua | ||
| descr | ||
| README | ||
# $Source: /cvsroot/tack/Ack/plat/linux386/README,v $ # $State: Exp $ # $Revision: 1.2 $ The linux386 platform ===================== linux386 is an i386-based BSP that produces Linux ELF executables. This port only implements a very limited number of system calls; basically, just enough to make the demo apps run. Adding more is easy, but there are some subtleties that require more thought. The port should be considered only in proof-of-concept stage right now. Important note: you *can't* link access ELF shared libraries from these executables. In other words, you have to all your work from inside ACK. IEEE floating point is available, but requires an FPU. The executables are generated with aelfslod and are extremely simple; there's one rwx ELF section which contains all the application's code and data. This is not optimal, but it does work. Bugs ==== isatty() is a stub and always returns 0. Example command line ==================== ack -mlinux386 -O -o linux386.exe examples/paranoia.c The file linux386.exe can then be run on a i386 Linux machine (or on an emulation thereof). David Given dg@cowlark.com