When reading https://github.com/apache/nuttx-apps/pull/1793, I found a previous problem https://github.com/apache/nuttx-apps/pull/1454#discussion_r1045718067 now still exists on current master (inf in iperf bandwidth).
By step-by-step debugging, I found a value of 1000000.0 stored in register d8 is overwritten as 0 after context switch, then fdiv results in inf because of divided by 0. Finally I found that ARCH_FPU is not enabled while compiler is using FPU, and may lose values in floating-point registers.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
usage:
1. Connect Jlink, start JLinkGDBServer
JLinkGDBServer -if SWD -device stm32h743zi -speed 16000
2. Listen to the RTT port data and forward it to the virtual serial port
sudo socat -d -d PTY,link=/dev/ttyRTT0,raw,ignoreeof TCP:127.0.0.1:19021,reuseaddr
3. Read serial data
minicom -D /dev/ttyRTT0
Performance:(STM32H743, 400MHZ)
time "dd if=/dev/zero of=/dev/console bs=512 count=2048"
6.67 sec 157KB/s
Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
sysconf add param _SC_THREAD_STACK_MIN deal
make the pthread_exit pass the ltp/open_posix_testsuite/pthread_exit/1-2.c testcase
(1) in pthread_exit/1-2.c testcase, if sysconf(_SC_THREAD_STACK_MIN) % sysconf(_SC_PAGESIZE) is not zero, will report error and test failed, so set CONFIG_PTHREAD_STACK_MIN as DEFAULT_MM_PGSIZE`s default value.
(2) in function sysconf add param _SC_THREAD_STACK_MIN deal.
Signed-off-by: yanghuatao <yanghuatao@xiaomi.com>
Take the idea from Linux's iw_handler array and esp32c3_wlan's wlan_ops_s, and make it a common logic of upper-half driver.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
Add the proccessing logic of udp socketpair, and modify the
logic of sending and receiving for udp socketpair.
Verification:
- Use the socketpair interface to create a pair of local udp sockets,
and perform read and write operations.
Signed-off-by: liqinhui <liqinhui@xiaomi.com>
1. as we can use fork to implement vfork, so we rename the vfork to
fork, and use the fork method as the base to implement vfork method
2. create the vfork function as a libc function based on fork
function
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
In nuttx function pthread_rwlock_init param attr is useless, so remove it to make rwlock_init pass rwlock_init/1-1.c and rwlock_init/3-1.c testcases.
Signed-off-by: yanghuatao <yanghuatao@xiaomi.com>
Fix goldfish build toolchain math library error:
/mnt/yang/vela_Goldfish/nuttx/include/libcxx/cmath:454:9: error: 'nexttowardf' has not been declared in '::'
454 | using ::nexttowardf;
| ^~~~~~~~~~~
/mnt/yang/vela_Goldfish/nuttx/include/libcxx/cmath:472:9: error: 'acosl' has not been declared in '::'
472 | using ::acosl;
| ^~~~~
/mnt/yang/vela_Goldfish/nuttx/include/libcxx/cmath:473:9: error: 'asinl' has not been declared in '::'
473 | using ::asinl;
| ^~~~~
Signed-off-by: yanghuatao <yanghuatao@xiaomi.com>
Fix build error:apps/interpreters/quickjs/quickjs/quickjs.c:11852:(.text.js_ecvt1.constprop.0+0xfc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `fesetround'
Signed-off-by: yanghuatao <yanghuatao@xiaomi.com>
Prototype:
unsigned long strtoul(FAR const char *nptr, FAR char **endptr, int base);
unsigned long long strtoull(FAR const char *nptr, FAR char **endptr, int base);
If endptr is not NULL, strtoul()/strtoull() should store the address of the first
invalid character in *endptr. And if the correct value is outside the range of
representable values, {ULONG_MAX} or {ULLONG_MAX} shall be returned and errno set
to [ERANGE].
With such code:
strtoul("34592348345343453453455645765736575865767", &endptr, 10);
It indeed returns ULONG_MAX and sets errno to ERANGE. But after strtoul
return, endptr points to "3455645765736575865767", not NULL.
Signed-off-by: Sunny <zxcvbnm37425@gmail.com>
When we use libmetal with other headers using stdatomic.h, we'll get
symbol conflict if we don't enable HAVE_STDATOMIC_H in libmetal. The
best solution might be using cmake to detect headers automatically, but
we can't. Fortunately we have CONFIG_HAVE_ATOMICS macro now, which can
replace HAVE_STDATOMIC_H when we're not using cmake.
Note: 2-Steps to use CONFIG_HAVE_ATOMICS
1. Include compiler.h for CONFIG_HAVE_ATOMICS definition
2. Check CONFIG_HAVE_ATOMICS instead of HAVE_STDATOMIC_H
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
