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using inline assembly on Cortex-M3 using RVCT 4.0
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using inline assembly on Cortex-M3 using RVCT 4.0
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Abhinav Varma
over 7 years ago
Note: This was originally posted on 20th August 2010 at http://forums.arm.com
Hey all,
While migrating from arm-gcc to armcc, I am facing the following problem - There is an inline code which is giving error.
"abc.c", line 162: Error: #1113: Inline assembler not permitted when generating Thumb code
__asm__ __volatile__("wfi");
^
What should be done to get the code running.
I am using Cortex M3 processor and RVDS 4.0.
Thanks and Regards
Abhinav Varma
Offline
Simon Craske
over 7 years ago
Note: This was originally posted on 20th August 2010 at
http://forums.arm.com
For "WFI" you don't need to use assembly. RVCT supports WFI via a built-in intrinsic called "__wfi()".
Just use "__wfi()" as if it were a function, e.g.
[font="Courier New"] while(....) __wfi();[/font]
hth
s.
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Mohamed Jauhar
over 7 years ago
Note: This was originally posted on 23rd November 2012 at
http://forums.arm.com
The below code will work for armcc
__asm
{
"wfi";
}
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Mohamed Jauhar
over 7 years ago
Note: This was originally posted on 23rd November 2012 at
http://forums.arm.com
can you help for inline in gcc ;
i am facing some issue with assembler, please see the belwo details;
Hi,
I am getting below error message for arm inlin in gcc compiler , could you please tell me what
is the reason.
I am using Coretex-A9 processor.
for example
inline asm code
asm (
"rsbs" dumy, shift_value, 0 "\n\t"
"movmi " L_var_out, value, "asr" shift_value"\n\t"
"movpl" L_var_out, value, "lsl" dumy
);
====================================
Below error i got .........
tmp/ccTkbhQl.s:24: Error: ARM register expected -- `smulwb result,a,b MOV result,result,LSL#1'
/tmp/ccTkbhQl.s:41: Error: ARM register expected -- `rsbs dumy,shift_value,0movmi
L_var_out,value,asr shift_valuemovpl L_var_out,value,lsl dumy'
/tmp/ccTkbhQl.s:58: Error: ARM register expected -- `cmp L_var1,0MVNLTS L_var1,L_var1MOVEQ
var_out,32 CLZGT var_out,L_var1SUB var_out,var_out,1'
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