Hi, Greg Ungerer wrote, > Hi Waldemar, > > On 19/08/16 08:48, Waldemar Brodkorb wrote: > > Hi Greg, > > Greg Ungerer wrote, > > > >> Hi Waldemar, > >> > >> On 19/03/16 13:53, Greg Ungerer wrote: > >>> Hi Waldemar, > >>> > >>> On 14/03/16 15:01, Waldemar Brodkorb wrote: > >>>> Add patchset from ptxdist which is required to produce working > >>>> ARM flat binaries. Tested with busybox on Kinetis K70. > >>>> > >>>> Signed-off-by: Waldemar Brodkorb <w...@openadk.org> > >>> > >>> Thanks. Applied to the github elf2flt repository (with Thomas' > >>> Tested-by). > >> > >> The adding of the ARM.eidx section in this patch breaks binaries > >> that have a global offset table (GOT). I propose the attached fix > >> that puts it within the data section proper - and not effectively > >> at the start of the data section. > >> > >> The original patch would have no impact on fully relocated > >> binaries, generally only those compiled with -fpic or similar. > > > > I tested your patch with Buildroot on a STM32F29 device, but it > > fails on boot while executing one of the startup scripts: > > > > [ 0.650000] STM32 USART driver initialized > > [ 0.650000] 40011000.serial: ttyS0 at MMIO 0x40011000 (irq = 17, > > base_baud = 5625000) is a stm32-usart > > [ 0.890000] console [ttyS0] enabled > > [ 0.910000] Freeing unused kernel memory: 12K (9000a000 - 9000d000) In > > [ 1.260000] > > [ 1.260000] Unhandled exception: IPSR = 00000003 LR = fffffff1 > > [ 1.260000] CPU: 0 PID: 26 Comm: S20urandom Not tainted 4.5.0 #2 > > [ 1.260000] Hardware name: STM32 (Device Tree Support) > > [ 1.260000] task: 90550000 ti: 9055a000 task.ti: 9055a000 > > [ 1.260000] PC is at 0x21000000 > > [ 1.260000] LR is at 0xfffffffd > > [ 1.260000] pc : [<21000000>] lr : [<fffffffd>] psr: 40000035 > > [ 1.260000] sp : 9055bff8 ip : 9055bfe0 fp : 90555008 > > [ 1.260000] r10: 00000000 r9 : 00000003 r8 : 00000024 > > [ 1.260000] r7 : 00000072 r6 : 906ccad8 r5 : 00000000 r4 : 00000072 > > [ 1.260000] r3 : 00000000 r2 : 00000003 r1 : 906ccafc r0 : ffffffff > > [ 1.260000] xPSR: 40000035 > > [ 1.260000] CPU: 0 PID: 26 Comm: S20urandom Not tainted 4.5.0 #2 > > [ 1.260000] Hardware name: STM32 (Device Tree Support) > > [ 1.260000] [<0800bd41>] (unwind_backtrace) from [<0800b0df>] > > (show_stack+0xb/0xc) > > [ 1.260000] [<0800b0df>] (show_stack) from [<0800b68f>] > > (__invalid_entry+0x4b/0x4c) > > > > Without the patch the system boots up fine. > > Ok, thanks for the feedback. > > Can you try this patch instead then? > It keeps the ARM.edix table at the same relative position, but moves > the _etext symbol to be after the ARM.eidx table. The ARM.eidx section > is marked as read-only in the linked ELF file.
This works for me. What application is breaking without it? best regards Waldemar _______________________________________________ uClinux-dev mailing list uClinux-dev@uclinux.org http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by uclinux-dev@uclinux.org To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
