FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F2.2.0 1996-11-02T10:41:29Z 1996-11-02T10:41:29Z cvs2svn cvs2svn@FreeBSD.org 1996-11-02T10:41:29Z urn:sha1:2fce0b4e66baed619f83c7226d51fe90862f0122 1996-06-12T05:11:41Z Gary Palmer gpalmer@FreeBSD.org 1996-06-12T05:11:41Z urn:sha1:c23670e2949d9e72d99006b4f3be147c712f2f89 Reviewed by: bde 1996-05-02T10:43:17Z Poul-Henning Kamp phk@FreeBSD.org 1996-05-02T10:43:17Z urn:sha1:f8845af0dbef25d2e6f611245f459918081b0cb2 1996-04-07T17:39:28Z Bruce Evans bde@FreeBSD.org 1996-04-07T17:39:28Z urn:sha1:6ffde942bf3c33906c93f86d2e59e4390f939a97 copied from bad examples. 1996-03-19T15:03:00Z Bruce Evans bde@FreeBSD.org 1996-03-19T15:03:00Z urn:sha1:ede8dc43a2624d29d33de0a0bbdd0990d978b7c3 vm_offset_t is currently unsigned long but should probably be plain unsigned for i386's to match the choice of minimal types to represent for fixed-width types in Lite2. Anyway, it shouldn't be assumed to be unsigned long. I only fixed the type mismatches that were detected when I changed vm_offset_t to unsigned. Only pointer type mismatches were detected. 1996-03-12T06:20:19Z Peter Wemm peter@FreeBSD.org 1996-03-12T06:20:19Z urn:sha1:71d7d1b17aac58f60ca8dcc25d2e3785c8c9c081 a "#define MAP_FILE 0" that is still there for net-2 source compatability. 1996-03-10T23:25:17Z Peter Wemm peter@FreeBSD.org 1996-03-10T23:25:17Z urn:sha1:0946c36c96b60bd1cef4f5537f394828eacc37a7 line, these had got (start, length) arguments instead of (start, end) args. This could be the cause of Robert Sanders lockups with ZMAGIC binaries. 1996-03-04T21:03:11Z Peter Wemm peter@FreeBSD.org 1996-03-04T21:03:11Z urn:sha1:dbc09a6375d8b3bfb7ae2f93fc8f3fbde0c01391 fix sigsuspend() (actually back out my recent change there) and regen the syscall tables.. 1996-03-02T19:38:20Z Peter Wemm peter@FreeBSD.org 1996-03-02T19:38:20Z urn:sha1:d66a506616078adf4d266a309f979ffd95fe634f netscape-2.0 for Linux running all the Java stuff. The scrollbars are now working, at least on my machine. (whew! :-) I'm uncomfortable with the size of this commit, but it's too inter-dependant to easily seperate out. The main changes: COMPAT_LINUX is *GONE*. Most of the code has been moved out of the i386 machine dependent section into the linux emulator itself. The int 0x80 syscall code was almost identical to the lcall 7,0 code and a minor tweak allows them to both be used with the same C code. All kernels can now just modload the lkm and it'll DTRT without having to rebuild the kernel first. Like IBCS2, you can statically compile it in with "options LINUX". A pile of new syscalls implemented, including getdents(), llseek(), readv(), writev(), msync(), personality(). The Linux-ELF libraries want to use some of these. linux_select() now obeys Linux semantics, ie: returns the time remaining of the timeout value rather than leaving it the original value. Quite a few bugs removed, including incorrect arguments being used in syscalls.. eg: mixups between passing the sigset as an int, vs passing it as a pointer and doing a copyin(), missing return values, unhandled cases, SIOC* ioctls, etc. The build for the code has changed. i386/conf/files now knows how to build linux_genassym and generate linux_assym.h on the fly. Supporting changes elsewhere in the kernel: The user-mode signal trampoline has moved from the U area to immediately below the top of the stack (below PS_STRINGS). This allows the different binary emulations to have their own signal trampoline code (which gets rid of the hardwired syscall 103 (sigreturn on BSD, syslog on Linux)) and so that the emulator can provide the exact "struct sigcontext *" argument to the program's signal handlers. The sigstack's "ss_flags" now uses SS_DISABLE and SS_ONSTACK flags, which have the same values as the re-used SA_DISABLE and SA_ONSTACK which are intended for sigaction only. This enables the support of a SA_RESETHAND flag to sigaction to implement the gross SYSV and Linux SA_ONESHOT signal semantics where the signal handler is reset when it's triggered. makesyscalls.sh no longer appends the struct sysentvec on the end of the generated init_sysent.c code. It's a lot saner to have it in a seperate file rather than trying to update the structure inside the awk script. :-) At exec time, the dozen bytes or so of signal trampoline code are copied to the top of the user's stack, rather than obtaining the trampoline code the old way by getting a clone of the parent's user area. This allows Linux and native binaries to freely exec each other without getting trampolines mixed up. 1996-02-16T18:40:50Z Peter Wemm peter@FreeBSD.org 1996-02-16T18:40:50Z urn:sha1:5297fc55c8f1f96f0d44ed639fa27d19effd2af9 - Optimise the linux a.out loading and uselib system calls so they take advantage of some of John's recent interface improvements. Basically, this means they make far less map changes than before. - Attempt to plug some potentially nasty kernel_map memory leaks.. - Improve support for QMAGIC libs (I only use QMAGIC (ie: a.out libraries from the slackware 3.0 dist) but this depends on other changes to enhance the /compat/linux support) - uselib goes out through a single exit as part of the resource tracking that I did when closing the resource leaks on errors. This could be cleaner than what I did, but making a 30-deep nested if/else was not my idea of fun, neither did I want to repeat the same code 30 times over for each failure possibility. I guess this function needs to be split into smaller functions to solve this. I've been running the Linux Netscape-2.0 (with Java) to test this, and apart from the long-standing problem with the missing scrollbars, it appears to still work as before with ZMAGIC libs (and the leaks).. However, I've been using it with mods for the signal trampoline code for native linux stack frames on signals and exterminated the blasted sigreturn printf() problem, so I can't be certain that there is not a dependency on something else.