Implement the bzero function as an alternative to macro expansion.
and support gcc FORTIFY_SOURCE features for nuttx libc
This function will use gcc's function
__builtin_dynamic_object_size and __builtin_object_size
Its function is to obtain the size of the object through compilation,
so as to judge whether there are out-of-bounds operations in commonly used functions.
It should be noted that the option -O2 and above is required to enable this function
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
In the gcc-riscv compiler, __builtin_ffs will call ffs, and calling __builtin_ffs in ffs will cause recursion
Change ffs to an inline function, and compile ffs implemented by nuttx by default.
Only call the implementation of nuttx when the compiler cannot provide an ffs implementation.
Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
Because `set_source_files_properties` in cmake will overwrite the properties instead of appending them.
This module implements addition and deletion by
first `getting_source_file_property` and then `set_source_files_properties`
Signed-off-by: xuxin19 <xuxin19@xiaomi.com>
This commit adds support for reallocarray function. The functionality
is the same as for standard realloc, but the function also checks for
multiplication overflow and fails safely in case it occurs.
Signed-off-by: Michal Lenc <michallenc@seznam.cz>
The current macro guard for TLS related symbols is
not enough, only if !defined(CONFIG_DISABLE_PTHREAD)
and CONFIG_TLS_NELEM > 0, the TLS related symbols
will enabled.
So if CONFIG_DISABLE_PTHREAD is not defined, but
TLS is disabled, the reference to TLS related symbols
will cause build error (undefined reference to xxx).
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
Don't include the build timestamp into final binary when the symbol
CONFIG_LIBC_UNAME_DISABLE_TIMESTAMP is defined.
Signed-off-by: Alan C. Assis <acassis@gmail.com>
./helloxx_main.cxx:29:10: fatal error: cxxabi.h: No such file or directory
29 | #include <cxxabi.h>
| ^~~~~~~~~~
CONFIG_LIBCXXABI is turned on, but the library include is not linked to nuttx/include, causing the compilation to fail.
Signed-off-by: wangmingrong <wangmingrong@xiaomi.com>
This fixes calls like memmem("hello", 5, "lo", 2);
Also zero-length needle is deemed to exist at beginning of haystack.
This behavior matches memmem() on Linux, FreeBSD, NetBSD and OpenBSD.
Signed-off-by: Juha Niskanen <juha.niskanen@haltian.com>
The maximum startup parameters have been checked accordingly in nxtask_setup_stackargs(),
let us save argument counter to avoid limit check.
Signed-off-by: chao an <anchao@lixiang.com>
aggresive optimisation can replace occurrences of sinl() and cosl() with
sincosl(), but sincosl() is missing in newlib which causes error. So let's
use custom implementation here.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
Inclusion of mach/mach_time.h by libcxx/src/chrono.cpp breaks
the build on latest MACOS dues to https://forums.developer.apple.com/forums/thread/746737
The interface from mach/mach_time.h is not referenced in chrono.cpp
so it is safe to remove it
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
I recently imported NuttX version 6.0 (and nsh) into a Microchip
Studio project [1] on Windows to figure out what was going wrong with
the avr32dev1 build. I also briefly checked NuttX version 10.
I worked with the assumption that the avr32 (avr32dev1) specific
changes to the codebase were minimal across NuttX releases.
For the initial proof of concept I used Microchip Studio version 7.0
(with the recent Microchip's ASF updates). I use avr32-gcc (4.4.7)
hosted here [2] for building NuttX for avr32dev1 on GNU/Linux.
Even with the Microchip Studio project, I had initial debug problems
with just stepping through the code a line at a time. I had to bring
in crt0, a trampoline stub and the linker file from one of my older
projects to really build on the suspicion I had with the linker file.
Perhaps an older version of avr32-gcc did something differently. I am
not sure about this. I used avr32-objdump to see the output sections
of the generated elf file. I just had to tweak the linker script to
ensure correct linking of the sections.
With those changes, I was able to inspect the UART sections within
NuttX Microchip Studio project.
Second important change: the transmit pin: I had to reassign the pin
to see the nsh console.
These are the currently assigned UART pins:
RX: PA_24 -> Physical IC pin 59
TX: PB_02 -> Physical IC pin 24
For the avr32dev1 board, they are pins: J1 (berg pin 28) and J2 (berg
pin 10).
In addition, the PR fixes silly compilation problems with avr32dev1.
I have tested the nsh build with my avr32dev1 boards. I used Atmel ICE
to program one of them (flash at 0x80000000) and dfu-programmer to
test my other board (flash at 0x80002000). The other RS-232 parameters
are the same as they were.
References:
[1]: https://github.com/ramangopalan/nuttx_avr32dev1
[2]: https://github.com/ramangopalan/avr32-gnu-toolchain-linux_x86_64
It seems libcxx needs C++20 from 12.0.0 to 17.0.6: 3b625060fc
But we're setting CMAKE_CXX_STANDARD to 17, errors on my side:
nuttx/libs/libxx/libcxx/src/include/to_chars_floating_point.h:122:46: error: ‘bit_cast’ is not a member of ‘std’
122 | const _Uint_type _Uint_value = _VSTD::bit_cast<_Uint_type>(_Value);
| ^~~~~~~~
nuttx/libs/libxx/libcxx/src/memory_resource_init_helper.h:2:8: error: ‘constinit’ does not name a type
2 | static constinit ResourceInitHelper res_init _LIBCPP_INIT_PRIORITY_MAX;
| ^~~~~~~~~
nuttx/libs/libxx/libcxx/src/memory_resource_init_helper.h:2:8: note: C++20 ‘constinit’ only available with ‘-std=c++20’ or ‘-std=gnu++20’
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
The lowest bit of the thumb instruction is 1 by default, which is used to distinguish arm instructions and thumb instructions.
Fixed the problem of misalignment of symbol table when performing binary search
In arm, the lowest bit of the instruction is 1, which is a thumb instruction, and 0, which is an arm instruction.
The nm command was used in mkallsym.sh before, and the result it will return will set the lowest bit of the thumb instruction to 0. There will be a one-byte deviation during binary search, so mkallsyms.py will also set the lowest bit to 0 according to the previous format.
```sh
arm-none-eabi-nm -Cn nuttx | grep hello
0801c384 T hello_main
arm-none-eabi-objdump nuttx -t |grep hello
0801c384 g F .text 0000004c hello_main
arm-none-eabi-readelf nuttx -s |grep hello
4558: 0801c385 76 FUNC GLOBAL DEFAULT 1 hello_main
```
However, in the following case, when you need to find the function address according to the symbol name and execute the corresponding function, the lowest address obtained is 0. It will follow the arm instruction, causing an exception.
```c
void sym_test(void)
{
printf("call sym_test\n");
}
int main(int argc, FAR char *argv[])
{
FAR void *addr = sym_test;
printf("sym_test:%p %pS\n",addr, addr);
printf("sym_test - 1: %pS\n", (char *)addr - 1);
printf("sym_test + 1: %pS\n", (char *)addr + 1);
size_t size;
void (*func)(void);
const struct symtab_s *sym = allsyms_findbyname("sym_test", &size);
printf("sym_test:%p %pS\n",sym, sym);
func = sym->sym_value;
func();
return 0;
}
```
Therefore, you need to change mkallsyms.py back to the correct result and correct the binary search.
Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
This tries to mirror the following change.
```
commit c260fee516
Author: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
Date: Tue Aug 31 14:47:13 2021 -0300
libs/libxx: Enforce RTTI for building libcxxabi
It is okay for the application to be built without RTTI (-fno-rrti), but
libcxxabi requires RTTI at least for the library.
Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
```
the patch has been removed in the following change.
```
commit 4f90a6140c
Author: Stuart Ianna <stuart.ianna@motec.com.au>
Date: Mon Jan 23 09:08:00 2023 +1100
libcxx: Remove exiting patches and update libcxx version to 15.0.7
- Add __config_site for NuttX.
In libcxx 12.0.0. CMake concatenated __config_site with _config,
which enabled NuttX to build without its inclusion. In 15.0.7, this
file is configured by CMake and included explicitly in __config.
- Add additional include directories.
- Mute always_inline warning.
- Make the download of libcxx/libcxxabi configurable
```
yinshengkai