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Tag: arm

How to emulate ARM unaligned memory access exceptions?

I’m writing a cross-platform application which works on x86 machines, but crashes with “Bus error” on the actual ARM hardware (Raspberypi 2) … … but runs without any problems in Qemu. I run this command to enable SIGBUS signal and notification in the kernel running under Qemu, but it doesn’t seem to have any effect: echo 5 > /proc/cpu/alignment [2]

C NET-SNMP Get and Set specifically via MIB Name, Not OID

I have written and am testing software for a generic SNMP client module in C as well as an implementation using this generic module. I am having trouble getting a get request to work by passing in a MIB name(e.g. sysDescr) instead of an OID(e.g. 1.3.6.1.2.1.1.1). I am successful when I pass in a character array containing the OID to

How u-boot start instruction is found by ROM Code

I am trying to understand ARM Linux Boot Process. These are the things I understood: When reset button is pressed in any processor, it jumps to the reset vector or address, in case of ARM it is either 0x00 or 0xFFFF0000. This location contains the start up code or ROM Code or Boot ROM Code My query is how this

How to extract the config from a kernel image file when CONFIG_IKCONFIG is set as a module (=m)?

How do I extract the kernel configuration from a kernel image file? The kernel image file type is: The kernel has been compiled with CONFIG_IKCONFIG enabled. However, returns Note: I am trying the get the config without booting the kernel. Answer If the kernel has been compiled with CONFIG_IKCONFIG=m (note the m), the configuration in stored in a module (configs.ko)

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