Commit Graph

19 Commits

Author SHA1 Message Date
Warner Losh
ffa0366553 bsd-user: remove a.out support
Remove still-born a.out support. The BSDs switched from a.out to ELF 20+ years
ago. It's out of scope for bsd-user, and what little support there was would
simply wind up at a not-implemented message. Simplify the whole mess by removing
it entirely. Should future support be required, it would be better to start from
scratch.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2021-09-10 14:13:06 -06:00
Warner Losh
1b50ff64a5 bsd-user: implement path searching
Use the PATH to find the executable given a bare argument. We need to do
this so we can implement mixing native and emulated binaries (e.g.,
execing a x86 native binary from an emulated arm binary to optimize
parts of the build). By finding the binary, we will know how to exec it.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-10 14:13:06 -06:00
Warner Losh
223005f058 bsd-user: Fix calculation of size to allocate
It was incorrect to subtract off the size of an unsigned int here.  In
bsd-user fork, this change was made when moving the arch specific items
to specific files.  The size in BSD that's available for the arguments
does not need a return address subtracted from it.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-10 14:13:06 -06:00
Warner Losh
d37853f92f bsd-user: pass the bsd_param into loader_exec
Pass the bsd_param into loader_exec, and adjust. We use it to track the
inital stack allocation and to set stack, open files, and other state
shared between bsdload.c and elfload.c

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2021-09-10 14:13:06 -06:00
Warner Losh
a8998784ae bsd-user: style nits: bsdload.c whitespace to qemu standard
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-07 08:26:52 -06:00
Warner Losh
b211b3681a bsd-user: add license to bsdload.c
Pull in the license statement at the top of the bsdload.c file
from the bsd-user fork version of this file. No functional changes.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-07 08:26:52 -06:00
Warner Losh
afcbcff80b bsd-user: rename linux_binprm to bsd_binprm
Rename linux_binprm to bsd_binprm to reflect that we're loading BSD binaries,
not ELF ones.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
2021-05-11 13:53:52 -06:00
Warner Losh
58b3beb483 bsd-user: style tweak: Put {} around all if/else/for statements
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
2021-04-30 09:14:06 -06:00
Warner Losh
fa0546370d bsd-user: style tweak: return is not a function, eliminate ()
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
2021-04-30 09:11:45 -06:00
Warner Losh
ca0fd2e345 bsd-user: whitespace changes
keyword space paren, no space before ( in function calls, spaces around
operators.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
2021-04-30 09:09:18 -06:00
Peter Maydell
4a65a86af6 bsd-user/bsdload.c: Remove write-only id_change variable
On OpenBSD the compiler complains:
bsd-user/bsdload.c:54:17: warning: variable 'id_change' set but not used [-Wunused-but-set-variable]

This is dead code that was originally copied from linux-user.
We fixed this in linux-user in commit 331c23b5ca in 2011;
delete the useless code from bsd-user too.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: 1500395194-21455-4-git-send-email-peter.maydell@linaro.org
2017-07-21 15:00:43 +01:00
Peter Maydell
2231197c87 bsd-user: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1454089805-5470-4-git-send-email-peter.maydell@linaro.org
2016-02-04 17:01:04 +00:00
Peter Maydell
9bb931802e Revert "bsd-user: replace fprintf(stderr, ...) with error_report()"
This reverts commit 1fba509527.

That commit converted various fprintf(stderr, ...) calls to
use error_report(); however none of these bsd-user files include
a header which gives a prototype for error_report, so this
causes compiler warnings. Since these are just straightforward
reporting of command line errors, we should handle these in the
obvious way by printing to stderr, as we do for linux-user.
There's no need to drag in the error-handling framework for this,
especially since user-mode doesn't have the "maybe we need to
send this to the monitor" issues system emulation does.

Acked-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-02 13:26:59 +01:00
Le Tan
1fba509527 bsd-user: replace fprintf(stderr, ...) with error_report()
Replace fprintf(stderr,...) with error_report() in files bsd-user/*.
The trailing "\n"s of the @fmt argument have been removed
because @fmt of error_report() should not contain newline.

Signed-off-by: Le Tan <tamlokveer@gmail.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-05-26 10:41:22 +04:00
Stefan Weil
c580dee4e1 bsd_user: Fix potential null pointer dereference
This bug was spotted by cppcheck.

Using g_try_malloc0 (as does the linux-user code) fixes this.

v2:
Use g_free in bsdload.c, too. Thanks to Peter Maydell for this hint.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-12-10 17:02:05 +00:00
Wolfgang Schildbach
67af42ac5a Remove dead code for ARM semihosting commandline handling
There are some bits in the code which were used to store the commandline for
the semihosting call. These bits are now write-only and can be removed.

Signed-off-by: Wolfgang Schildbach <wschi@dolby.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-01-07 18:20:57 +02:00
Blue Swirl
7cba04f6de More NULL pointer fixes
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-08-01 10:13:20 +00:00
Blue Swirl
e99a22cc20 Avoid collision with system NGROUPS definition
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-06-13 15:10:28 +00:00
blueswir1
84778508d7 Preliminary BSD user emulator support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5544 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-26 20:33:16 +00:00