Hello everyone, Currently I'm going through the source code of seL4. I find function in seL4\src\object\Tcb.c that I can't find it's definition. In line 59, tcbSchedEnqueue calls a function 'thread_state_ptr_set_tcbQueued(&tcb->tcbState, true)'. However, even with the help of Source Insight I still can't locate the definition of 'thread_state_ptr_set_tcbQueued' . Does anyone know where it is ? Thanks in advance. Best regards, Kenneth.
Hi Kenneth,
After you build the kernel, you can find its definition in
build/kernelkernel_final.c
file.
But I do no know how it is generated.
I guess it is generated by some scripts or preprocessor.
I also hope the answer from sel4 expert.
Best,
Yuxin
On Tue, Oct 28, 2014 at 3:59 AM, chengkunck@gmail.com
Hello everyone,
Currently I'm going through the source code of seL4. I find function in seL4\src\object\Tcb.c that I can't find it's definition.
In line 59, *tcbSchedEnqueue* calls a function '*thread_state_ptr_set_tcbQueued(&tcb->tcbState, true)*'. However, even with the help of Source Insight I still can't locate the definition of '*thread_state_ptr_set_tcbQueued' .* Does anyone know where it is ?
Thanks in advance.
Best regards, Kenneth.
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Hi,
This function, and many others, is generated by a tool called the 'bitfield generator' in tools/bitfield_gen.py It takes as input files ending in .bf, and can produce both C code and proofs said code. If you were to look in include/arch/arm/arch/object/structures.bf you would find a block structure called 'thread_state' with a field member called 'tcbQueued'. The bitfield generator takes this data structure description and generates all the relevant getter, setter and construction methods.
So during the build a file called 'arch/object/structures_gen.h' will get generated from this .bf file using the bitfield_gen.py tool in the Makefile rule '%_gen.h:' that contains all the functions. This file gets removed after compilation when doing standalone kernel builds.
Adrian
On 29/10/14 03:10, Yuxin Ren wrote:
Hi Kenneth,
After you build the kernel, you can find its definition in build/kernelkernel_final.c file.
But I do no know how it is generated.
I guess it is generated by some scripts or preprocessor.
I also hope the answer from sel4 expert.
Best,
Yuxin
On Tue, Oct 28, 2014 at 3:59 AM, chengkunck@gmail.commailto:chengkunck@gmail.com
Thank you, Adrian. That helps me.
chengkunck@gmail.com
From: Adrian Danis
Date: 2014-10-29 08:13
To: Yuxin Ren; chengkunck@gmail.com
CC: devel
Subject: Re: [seL4] A missing function?
Hi,
This function, and many others, is generated by a tool called the 'bitfield generator' in tools/bitfield_gen.py It takes as input files ending in .bf, and can produce both C code and proofs said code. If you were to look in include/arch/arm/arch/object/structures.bf you would find a block structure called 'thread_state' with a field member called 'tcbQueued'. The bitfield generator takes this data structure description and generates all the relevant getter, setter and construction methods.
So during the build a file called 'arch/object/structures_gen.h' will get generated from this .bf file using the bitfield_gen.py tool in the Makefile rule '%_gen.h:' that contains all the functions. This file gets removed after compilation when doing standalone kernel builds.
Adrian
On 29/10/14 03:10, Yuxin Ren wrote:
Hi Kenneth,
After you build the kernel, you can find its definition in build/kernelkernel_final.c file.
But I do no know how it is generated.
I guess it is generated by some scripts or preprocessor.
I also hope the answer from sel4 expert.
Best,
Yuxin
On Tue, Oct 28, 2014 at 3:59 AM, chengkunck@gmail.com
Oh, thank you so much. I never thought of that, lol.
chengkunck@gmail.com
From: Yuxin Ren
Date: 2014-10-29 00:10
To: chengkunck@gmail.com
CC: devel
Subject: Re: [seL4] A missing function?
Hi Kenneth,
After you build the kernel, you can find its definition in build/kernelkernel_final.c file.
But I do no know how it is generated.
I guess it is generated by some scripts or preprocessor.
I also hope the answer from sel4 expert.
Best,
Yuxin
On Tue, Oct 28, 2014 at 3:59 AM, chengkunck@gmail.com
participants (3)
-
Adrian Danis -
chengkunck＠gmail.com -
Yuxin Ren