* R_MIPS_26 etc.
@ 2002-12-10 16:11 ` yaelgilad
0 siblings, 0 replies; 6+ messages in thread
From: yaelgilad @ 2002-12-10 16:11 UTC (permalink / raw)
To: linux-mips
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Looking in the assembly code of my driver, I see the following
pattern repeating with every function call.
4ce4: 0c000000 jal 0
4ce4: R_MIPS_26 rx_wait_packet
(R_MIPS_26 is sometimes replaces by a similar command)
What is R_MIPS_26 ? What are the rest of them ?
I am guessing it has to do with relocatable addresses, but this specific
function is in the same C file. Marking it as "static" does change the code
and get rid of this command.
TIA
Gilad
P.S. I am building assembler files in two different methods:
- gmake <path-to-file>.lst
- mips-linux-odjdump -x -S <path-to-C-file> > <path-to-file.lst>
The outputs are similar but not identical.
What's the more "correct" way ?
TIA-2
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^ permalink raw reply [flat|nested] 6+ messages in thread* R_MIPS_26 etc.
@ 2002-12-10 16:11 ` yaelgilad
0 siblings, 0 replies; 6+ messages in thread
From: yaelgilad @ 2002-12-10 16:11 UTC (permalink / raw)
To: linux-mips
[-- Attachment #1: Type: text/plain, Size: 702 bytes --]
Looking in the assembly code of my driver, I see the following
pattern repeating with every function call.
4ce4: 0c000000 jal 0
4ce4: R_MIPS_26 rx_wait_packet
(R_MIPS_26 is sometimes replaces by a similar command)
What is R_MIPS_26 ? What are the rest of them ?
I am guessing it has to do with relocatable addresses, but this specific
function is in the same C file. Marking it as "static" does change the code
and get rid of this command.
TIA
Gilad
P.S. I am building assembler files in two different methods:
- gmake <path-to-file>.lst
- mips-linux-odjdump -x -S <path-to-C-file> > <path-to-file.lst>
The outputs are similar but not identical.
What's the more "correct" way ?
TIA-2
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: R_MIPS_26 etc.
2002-12-10 16:11 ` yaelgilad
(?)
@ 2002-12-10 16:19 ` Greg Lindahl
-1 siblings, 0 replies; 6+ messages in thread
From: Greg Lindahl @ 2002-12-10 16:19 UTC (permalink / raw)
To: linux-mips
On Tue, Dec 10, 2002 at 06:11:14PM +0200, yaelgilad wrote:
> Looking in the assembly code of my driver, I see the following
> pattern repeating with every function call.
> 4ce4: 0c000000 jal 0
> 4ce4: R_MIPS_26 rx_wait_packet
> (R_MIPS_26 is sometimes replaces by a similar command)
> What is R_MIPS_26 ? What are the rest of them ?
R_MIPS_26 is a relocation. The jal command has 26 bits available for
the address. BTW, you should mention when you are showing objdump
output instead of the .s emitted by the compiler...
g
^ permalink raw reply [flat|nested] 6+ messages in thread
* R_MIPS_26 etc.
@ 2002-12-12 7:07 ` yaelgilad
0 siblings, 0 replies; 6+ messages in thread
From: yaelgilad @ 2002-12-12 7:07 UTC (permalink / raw)
To: linux-mips
[-- Attachment #1: Type: text/plain, Size: 702 bytes --]
Looking in the assembly code of my driver, I see the following
pattern repeating with every function call.
4ce4: 0c000000 jal 0
4ce4: R_MIPS_26 rx_wait_packet
(R_MIPS_26 is sometimes replaces by a similar command)
What is R_MIPS_26 ? What are the rest of them ?
I am guessing it has to do with relocatable addresses, but this specific
function is in the same C file. Marking it as "static" does change the code
and get rid of this command.
TIA
Gilad
P.S. I am building assembler files in two different methods:
- gmake <path-to-file>.lst
- mips-linux-odjdump -x -S <path-to-C-file> > <path-to-file.lst>
The outputs are similar but not identical.
What's the more "correct" way ?
TIA-2
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^ permalink raw reply [flat|nested] 6+ messages in thread* R_MIPS_26 etc.
@ 2002-12-12 7:07 ` yaelgilad
0 siblings, 0 replies; 6+ messages in thread
From: yaelgilad @ 2002-12-12 7:07 UTC (permalink / raw)
To: linux-mips
[-- Attachment #1: Type: text/plain, Size: 702 bytes --]
Looking in the assembly code of my driver, I see the following
pattern repeating with every function call.
4ce4: 0c000000 jal 0
4ce4: R_MIPS_26 rx_wait_packet
(R_MIPS_26 is sometimes replaces by a similar command)
What is R_MIPS_26 ? What are the rest of them ?
I am guessing it has to do with relocatable addresses, but this specific
function is in the same C file. Marking it as "static" does change the code
and get rid of this command.
TIA
Gilad
P.S. I am building assembler files in two different methods:
- gmake <path-to-file>.lst
- mips-linux-odjdump -x -S <path-to-C-file> > <path-to-file.lst>
The outputs are similar but not identical.
What's the more "correct" way ?
TIA-2
[-- Attachment #2: Type: text/html, Size: 2789 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: R_MIPS_26 etc.
2002-12-12 7:07 ` yaelgilad
(?)
@ 2002-12-12 15:14 ` Greg Lindahl
-1 siblings, 0 replies; 6+ messages in thread
From: Greg Lindahl @ 2002-12-12 15:14 UTC (permalink / raw)
To: linux-mips
On Thu, Dec 12, 2002 at 09:07:27AM +0200, yaelgilad wrote:
> Looking in the assembly code of my driver, I see the following
> pattern repeating with every function call.
> 4ce4: 0c000000 jal 0
> 4ce4: R_MIPS_26 rx_wait_packet
> (R_MIPS_26 is sometimes replaces by a similar command)
jal takes a 26 bit address. R_MIPS_26 is the corresponding relocation.
-- greg
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2002-12-12 15:15 UTC | newest]
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2002-12-10 16:11 R_MIPS_26 etc yaelgilad
2002-12-10 16:11 ` yaelgilad
2002-12-10 16:19 ` Greg Lindahl
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2002-12-12 7:07 yaelgilad
2002-12-12 7:07 ` yaelgilad
2002-12-12 15:14 ` Greg Lindahl
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