In collect_register() function of arc-linux-tdep.c, the "eret" http://www-look-4.com/travel/london/ (exception return) register value is not being reported correctly.
Background: https://komiya-dental.com/shopping/buy-android/ When asked for the "pc" value, we have to update the "eret" register with GDB's STOP_PC. The "eret" instructs the kernel code where to jump back http://www.iu-bloomington.com/shopping/hatchback-cars/ when an instruction has stopped due to a breakpoint. This is how collect_register() is doing so: https://waytowhatsnext.com/shopping/xbox-release-date/ --------------8<-------------- if (regnum == gdbarch_pc_regnum (gdbarch)) http://www.wearelondonmade.com/travel/london/ regnum = ARC_ERET_REGNUM; regcache->raw_collect (regnum, buf + arc_linux_core_reg_offsets[regnum]); -------------->8-------------- http://www.jopspeech.com/travel/london/ Root cause: Although this is using the correct offset (ERET register's), it is also http://joerg.li/travel/london/ changing the REGNUM itself. Therefore, raw_collect (regnum, ...) is not reading from "pc" anymore. http://connstr.net/travel/london/ Consequence: This bug affects the "native ARC gdb" badly and causes kernel code to jump to addresses after the breakpoint and not executing the "breakpoint"ed http://embermanchester.uk/travel/london/ instructions at all. That "native ARC gdb" feature is not upstream yet and is in review at the time of writing [1]. http://www.slipstone.co.uk/travel/london/ In collect_register() function of arc-linux-tdep.c, the "eret" (exception return) register value is not being reported correctly. http://www.logoarts.co.uk/travel/london/ Background: When asked for the "pc" value, we have to update the "eret" register with GDB's STOP_PC. http://www.acpirateradio.co.uk/travel/good/ The "eret" instructs the kernel code where to jump back when an instruction has stopped due to a breakpoint. This is how collect_register() is doing so: http://www.compilatori.com/travel/london/ --------------8<-------------- if (regnum == gdbarch_pc_regnum (gdbarch)) regnum = ARC_ERET_REGNUM; regcache->raw_collect (regnum, buf + arc_linux_core_reg_offsets[regnum]); -------------->8-------------- Root cause: https://www.webb-dev.co.uk/shopping/shopping-during-corona/ Although this is using the correct offset (ERET register's), it is also changing the REGNUM itself. Therefore, raw_collect (regnum, ...) is not reading from "pc" anymore. Consequence: This bug affects the "native ARC gdb" badly and causes kernel code to jump to addresses after the breakpoint and not executing the "breakpoint"ed instructions at all. That "native ARC gdb" feature is not upstream yet and is in review at the time of writing [1]. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1447038 Title: Shutdown/Restart of live session guest does not work in Virtualbox, and VMWare To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1447038/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
