foundry27 : View Wiki Page: Kernel_source_guide

Search Wiki Pages

wiki1179: Kernel_source_guide (Version 24)

Quick Guide to the Kernel Source#

Where is the Kernel Source?#

/services/system/ker

How do I checkout and build the source?#

Where are the good bits?#

Functional Area	Related Files
debug support, reading kernel internal data	cpu_debug.c kerext_debug.c nano_debug.c nano_kerdebug.c deb_rec.c
kernel api, linkage kernel call entry and exit	kerext_* ker_* ker_call_table.c ker_ring0.c nano_specret.c
kernel entrypoint, and init	_main.c init_nto.c idle.c init_objects.c
magic	arm/kernel.S mips/kernel.S ppc/kernel.s sh/kernel.s
messaging	nano_message.c nano_xfer_msg.c nano_xfer_check.c nano_xfer_cpy.c ker_channel.c ker_connect.c ker_fastmsg.c ker_message.c
physical memory	emm_init_mem.c emm_mmap.c emm_munmap.c emm_pmem_add.c emm_vaddr_to_memobj.c
scheduler	ker_sched.c nano_sched.c
Adaptive Partitioning Scheduler	aps/
thread creation/deletion	nano_thread.c

Where the heck is the implementation of KernelCall()? #

To find the implementation of a kernel call spelled like CamelCaseKernelCall, look for a function ker_camel_case_kernel_call. For example the SchedCtl() kernel call is implemented by ker_sched_ctl().

What are the file naming conventions?#

filename pattern	Means
ker/ker_*	kernel entry file. Checks parameters and decides when to lock the kernel
ker/nano_	low-level implementation, in-kernel state and in ring-0 or supervisor mode
ker/arm/* ker/mips/* ker/ppc* ker/sh/* ker/x86/*	processor specific code for ARM, PowerPC, Hitach SH-4, and Intel x86 processor architectures

Collapsed Section

A subsidiary of BlackBerry All content ©2004-2013, QNX Software Systems