The code was loading the common ../sbrk.c file rather than the visium
specific sbrk.c due to VPATH setup. Add an explicit rule for this one
file so we make sure the correct one is used.
Avoid a recursive make to speed things up a bit.
A i386-elf build shows installed objects & libs produce same code other
than a rename from cygmon-gmon.o & cygmon-salib.o to i386_libcygmon_a-*.o
due to the use of custom CPPFLAGS in here.
This was added to specify -Wa,-gdwarf2 when compiling the assembly
files. Considering the size of these .S files, it seems unnecessary
overkill and complicates the build system. All but one of these
compile down to 6 or fewer lines, and those hardly need extra debug
for anyone who is poking msp430 assembly. The 1 file that is larger
than that (crt_move_highdata.S) is still <15 insns.
This will also simplify merging it into the top-level Makefile.
The build system compiles crt0.S many times to produce independent
object files by defining different -DLxxx symbols for each. This
complicates the build, and has led to some bugs in the source and
build (see the previous cleanup commits in here). The crt_bss.S
file has also been duplicated with crt0.S leading to confusion as
to which one is the "real" one. The only reason to keep them in
one file is to make management of the section numbers when calling
START_CRT_FUNC a little easier, but that seems trivial to check
with a quick grep across all the files.
Considering how complicated the build is now, and the bugs we've
had as a result, split the crt0.S file up into multiple source
files so we don't have to compile it multiple times. This will
also simplify merging it into the top-level Makefile.
This object is created by compiling crt0.S with -DLinit, but there
has never been an "#if Linit" check in crt0.S, so this has always
produced a stub object file. Drop compiling it entirely.
The #if 0 & comment imply this code doesn't exist and is never used,
except there's another #if Lrun_fini_array section below which *does*
define this function, which makes this code comment confusing. This
seems to be a hold over of the cleanup of the minrt code in the old
commit 884b05b54e ("MSP430: Remove
.init/.fini sections").
This logic is copied from what's used in newlib today. This allows
subdirs to easily define per-directory flags & per-file flags without
having to setup unique automake rules for each one.
A bunch of ports have manual rules to generate disassembly, srec, and
binary files from test programs. Add top-level pattern rules so every
test program gets this for free, and we don't have to duplicate it in
every subdir.
The local vars dst and src are unsigned pointers, but two assignments
cast their value to signed explicitely. This results in the warning
"pointer targets in assignment from ‘char *’ to ‘unsigned char *’
differ in signedness [-Wpointer-sign]" in case of -Wall.
Fix the cast.
Fixes: d254189b38 ("2002-07-23 Jeff Johnston <jjohnstn@redhat.com>")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The warning "right-hand operand of comma expression has no effect
[-Wunused-value]" crops up with -Wall in cases where ORIENT is called
without checking or assigning its value.
Explicitely void the expression in these cases to avoid the warning.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Compiling with -Wall uncovered a bug in _fputwc_r introduced in
commit 09119463a1 ("stdio: split byte- and wide-char-oriented
low-level output functions"). The underlying function __fputwc
has been accidentally called without fetching its return value.
So the return value of _fputwc_r (and thus fputwc) was undefined.
Fixes: 09119463a1 ("stdio: split byte- and wide-char-oriented low-level output functions"
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Unfortunately fgrep is now deprecated in a very pushy way.
Make sure to use grep -F instead all around, even in docs
and comments/
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Provide the same debugging opportunities for api_fatal() as we do for a
core-dumping signal:
1) Break into any attached debugger
2) Start JIT debugger (if configured) (keeping these under DEBUGGING doesn't seem helpful)
3) Write a coredump (if rlim_core > 1MB)
4) Write a stackdump (if that failed, or 0 < rlim_core <= 1MB)
Pre-format a command to be executed on a fatal error to run 'dumper'
(using an absolute path).
Factor out executing a pre-formatted command, so we can use that for
invoking the JIT debugger in try_to_debug() (if error_start is present
in the CYGWIN env var) and to invoke dumper when a fatal error occurs.
On a fatal error, if the core file size limit is greater than 1MB,
invoke dumper to write a core dump. Otherwise, if that limit is greater
than 0, write a .stackdump file, as previously.
Adjust and clarify the associated documentation.
Also: Fix so that the error_start JIT debugger is now invoked, even when
ulimit -c is zero.
Also: Fix uses of console_printf() inside exec_prepared_command(). It's
output is written via the Windows console device, so needs to use
Windows-style line endings.
Also: consistently return non-zero from try_to_debug() if we debugged.
Future work: Truncate or remove the file written, if it exceeds the
maximum size set by the ulimit.
Future work: Using the words "fatal error" could probably be improved
on. This means exiting on one of the "certain signals whose default
action is to cause the process to terminate and produce a core dump
file".
This function closes or sets the close-on-exec flag for a specified
range of file descriptors. It is available on FreeBSD and Linux.
Signed-off-by: Christian Franke <christian.franke@t-online.de>
Currently init_semihosting() assumes the return value from _open()
call as the file descriptor handle and that is incorrect.
The semihost _open() call returns the fdtable index returned by the
__add_fdentry() for the file opened.
From: Rich Felker <dalias@aerifal.cx>
Date: Mon, 7 Nov 2022 22:17:55 -0500
the rule that longest digit sequence not beginning with a zero is
greater only applies when both sequences being compared are
non-degenerate. this is spelled out explicitly in the man page, which
may be deemed authoritative for this nonstandard function: "If one or
both of these is empty, then return what strcmp(3) would have
returned..."
we were wrongly treating any sequence of digits not beginning with a
zero as greater than a non-digit in the other string.
Signed-off-by: Brian Inglis <Brian.Inglis@SystematicSW.ab.ca>
Set symbol '__jvt_base$' as weak. So if the symbol is not set in the
linker script, the address would be 0. We initialize jvt CSR only if
the address is not 0.
Also use csr number directly instead of using symbolic name to prevent the
backward incompatible issue.
psabi reference:
2d770815dc/riscv-elf.adoc (table-jump-relaxation)
The i960 port has a lot of references to sim files that have never been
included in the tree afaict, and thus has never worked. Delete all the
code to simplify.
This is a .c file, not assembly, and it's a duplicate (same content)
as the existing sim-lseek.c. Delete it since it's unused and doesn't
actually compile.
Basically the startup code needs to clear memory from _edata to _end. In the
past it's been done with a fairly naive copy loop. This changes the code to
just call memset and let memset figure out a sensible way to handle the
operation given the size and alignment requirements.
I don't have performance data on this. I cobbled it together some time ago in
response to seeing some of the GCC tests with larger .bss sections taking an
insane amount of time to just get from _start to main. With the fixes to the
H8 decoder in the simulator it may not matter nearly as much anymore.
This has been in my tester for months. Naturally it does not cause any
regressions in the H8 port.
Mike Frysinger
Corinna Vinschen
Jon Turney
Christian Franke
Venkata Ramanaiah Nalamothu
Brian Inglis
Hau Hsu
Xiao Zeng
Jeff Johnston
Jeff Law