uClibc was built with: make ARCH_CFLAGS= 'CPU_CFLAGS=-mthumb -march=armv7 -mfix-cortex-m3-ldrd' App was built with: arm-uclinuxeabi-gcc -c -g -mthumb -march=armv7 -mfix-cortex-m3-ldrd -O0 -Wl,-elf2flt,--static main.c arm-uclinuxeabi-gcc -Wl,-elf2flt,--static main.o -L../arm-2010q1/arm-uclinuxeabi/libc/thumb2/usr/lib -lpthread -o zpm_thread where all original uclibc libraries from toolchain were replaced with newly built ones: /mnt/repos/repos/github/uclibc$ ls -la /mnt/repos/repos/github/nocturn_tools/arm-2010q1/arm-uclinuxeabi/libc/thumb2/usr/lib total 1412 drwxrwxr-x 2 repu1sion repu1sion 4096 Nov 3 17:32 . drwxrwxr-x 5 repu1sion repu1sion 4096 Aug 25 22:50 .. -rw-rw-r-- 1 repu1sion repu1sion 992 Nov 3 17:32 crt1.o -rw-rw-r-- 1 repu1sion repu1sion 959 Nov 3 17:32 crti.o -rw-rw-r-- 1 repu1sion repu1sion 959 Nov 3 17:32 crtn.o -rw-rw-r-- 1 repu1sion repu1sion 1130956 Nov 3 17:32 libc.a -rw-rw-r-- 1 repu1sion repu1sion 175768 Nov 3 17:32 libm.a -rw-rw-r-- 1 repu1sion repu1sion 90352 Nov 3 17:32 libpthread.a -rw-rw-r-- 1 repu1sion repu1sion 1082 Nov 3 17:32 libresolv.a -rw-rw-r-- 1 repu1sion repu1sion 14084 Nov 3 17:32 librt.a
On Mon, Nov 3, 2014 at 5:53 PM, Andrii <[email protected]> wrote: > I've tried to apply Sergei' 3 patches to the original 0.9.33.2 and run > test app on it. > Still got a crash: > > / # /opt/zpm_thread > 00032 : pthread_initialize: initial thread stack bounds: bos=0x1, > tos=0xffffffff > 00032 : __pthread_initialize_manager: manager stack: size=8160, > bos=0xa00a2008, tos=0xa00a3fe8 > 00032 : __pthread_initialize_manager: send REQ_DEBUG to manager thread > 00032 : pthread_create: write REQ_CREATE to manager thread > 00032 : pthread_create: before suspend(self) > 00033 : __pthread_manager: before poll > 00033 : __pthread_manager: after poll > 00033 : __pthread_manager: before read > 00033 : __pthread_manager: after read, n=28 > 00033 : __pthread_manager: got REQ_CREATE > 00033 : pthread_allocate_stack: malloced chunk: base=0xa00a8008, > size=0x4000 > 00033 : pthread_allocate_stack: thread stack: bos=0xa00a8008, > tos=0xa00abea8 > 00033 : pthread_allocate_stack: initial stack: bos=0x1, tos=0xa00a2008 > 00033 : pthread_handle_create: cloning new_thread = 0xa00abea8 > 00033 : pthread_handle_create: new thread pid = 34 > 00033 : __pthread_manager: restarting 0xa008e8d0 > 00032 : pthread_create: after suspend(self) > thread #0 created > 00033 : __pthread_manager: before poll > 00034 : pthread_start_thread: > new thread 1 executed. > 00032 : pthread_create: write REQ_CREATE to manager thread > 00032 : pthread_create: before suspend(self) > 00033 : __pthread_manager: after poll > 00033 : __pthread_manager: before read > 00033 : __pthread_manager: after read, n=28 > 00033 : __pthread_manager: got REQ_CREATE > 00033 : pthread_allocate_stack: malloced chunk: base=0xa03d8008, > size=0x4000 > 00033 : pthread_allocate_stack: thread stack: bos=0xa03d8008, > tos=0xa03dbea8 > 00033 : pthread_allocate_stack: initial stack: bos=0x1, tos=0xa00a2008 > 00033 : pthread_handle_create: cloning new_thread = 0xa03dbea8 > 00033 : pthread_handle_create: new thread pid = 35 > 00033 : __pthread_manager: restarting 0xa008e8d0 > 00033 : __pthread_manager: before poll > 00035 : pthread_start_thread: > new thread 1 executed. > 00032 : pthread_create: after suspend(self) > thread #1 created > 00032 : pthread_create: write REQ_CREATE to manager thread > 00033 : __pthread_manager: after poll > 00033 : __pthread_manager: before read > 00033 : __pthread_manager: after read, n=28 > 00033 : __pthread_manager: got REQ_CREATE > 00032 : pthread_create: before suspend(self) > > [ 12.390000] > [ 12.390000] zpm_thread: unhandled MPU fault (0x08) at 0x00000000 > [pc=0xa0084c74,sp=0xa00a3f20] > [ 12.390000] > [ 12.390000] Pid: 33, comm: zpm_thread > [ 12.390000] CPU: 0 Not tainted (2.6.33-arm1 #2) > [ 12.390000] pc : [<a0084c74>] lr : [<a008478f>] psr: 21000000 > [ 12.390000] sp : a00a3f20 ip : 5220746f fp : 00000803 > [ 12.390000] Code dump at pc [a0084c74]: > [ 12.390000] a003f848 463b4621 ff98f7ff 681b4b04 > [ 12.390000] r10: 00005000 r9 : 00000003 r8 : a0020000 > [ 12.390000] r7 : a0092f04 r6 : 00000100 r5 : a0092e0c r4 : a0024ff4 > [ 12.390000] r3 : 00004ff4 r2 : 00000000 r1 : a0092e10 r0 : a0092e0c > [ 12.390000] Flags: nzCv IRQs on FIQs on Mode USER_26 ISA unknown > Segment user > [ 12.390000] Backtrace: invalid frame pointer 0x00000803 > > From my observations it crashes in malloc() during allocation of 16Kb > stack for a new thread while trying to find and link a new free area. > > Here is the app code. It's trivial: > > #include <stdio.h> > #include <stdlib.h> > #include <unistd.h> > #include <string.h> > #include <pthread.h> > > #define NUM_THREADS 10 > > pthread_t thread[NUM_THREADS] = {0}; > int thread_cnt = 0; > > void* start_routine(void *arg) > { > printf("new thread %d executed.\n", thread_cnt); > while(1) > { > sleep(1); > } > } > > void main() > { > int i; > int rv; > > for (i = 0; i < NUM_THREADS; i++) > { > rv = pthread_create(&thread[thread_cnt], NULL, > start_routine, NULL); > if (rv) > printf("<error> thread was not created! Error num > is : %d\n", rv); > printf("thread #%d created \n", thread_cnt); > thread_cnt++; > sleep(1); > } > while(1) > { > static int loop_cnt = 0; > printf("app loop: %d\n", loop_cnt); > sleep(1); > loop_cnt++; > if (loop_cnt == 10) > break; > } > } > > uClibc config is attached. > > Could someone please try it on M3 and tell me the results? > > Regards. > > > > > On Sat, Nov 1, 2014 at 10:52 AM, Sergei Poselenov <[email protected]> > wrote: > >> Hello, >> >> On Thu, 2014-10-23 at 17:25 +0200, Bernhard Reutner-Fischer wrote: >> > On 22 October 2014 12:11:26 CEST, Sergei Poselenov < >> [email protected]> wrote: >> > >Hello, >> > > >> > >> > >Uclibc (still) lacks pthreads support on Cortex-M3. >> > > >> > >I'm attaching two patches: >> > > - implement testandset() for Cortex-M3. >> > > - Fix a bug in implementation of clone() for Cortex-M3. >> > >> > Can you please send the two patches with appropriate signed-off-by >> lines? >> >> I'm sending the patches made against the pristine 0.9.33.2 in the next >> emails. Note that the changes may be not quite portable, feel free to >> modify them. >> >> Regards, >> >> Sergei >> > TIA, >> > >> >> >> > _______________________________________________ uClibc mailing list [email protected] http://lists.busybox.net/mailman/listinfo/uclibc
