On 07.05.2025 11:38, Michael Ackermann via Tinycc-devel wrote:
All information is supplied in detail to re-produce,If i've not missed anything.
If further information was necessary I'll do my best to provide any.
Well, see...
In my opinion, what software developers always underestimate, is
the development of the software in their head while they spent
hours and weeks of thinking on some project and while consuming
lots of air and food to provide the necessary vital resources.
In any case, what you know about your project is not what anyone
else knows, and is not what most other people ever would want to know.
> Any idea why arm-tcc would not escape on __asm__ token to process inline
> assembly,
I have no idea why arm-tcc would behave as you say because it doesn't.
But in order to have something that we can talk about we need to
see the file first.
You do have it on your computer already (I assume), but you don't
want to show it, for whatever reason.
So, as an exception, I tried to find it on the net. Here it is (presumably):
__asm__(
".text \n"
".global " START " \n"
".type " START ",%function \n"
START ": \n"
" mov fp, #0 \n"
" mov lr, #0 \n"
" ldr a2, 1f \n"
" add a2, pc, a2 \n"
" mov a1, sp \n"
"2: and ip, a1, #-16 \n"
" mov sp, ip \n"
" bl " START "_c \n"
".weak _DYNAMIC \n"
".hidden _DYNAMIC \n"
".align 2 \n"
"1: .word _DYNAMIC-2b \n"
);
and the error was:
./arch/arm/crt_arch.h:18: error: operand expected
Now, unfortunately, line 18 is the end of the entire __asm__()
statement. In order to get better results we can remove quotes
and try to compile the file as asm.S:
.text
.global START
.type START ,%function
START :
mov fp, #0
mov lr, #0
ldr a2, 1f
add a2, pc, a2
mov a1, sp
2: and ip, a1, #-16
mov sp, ip
bl START_c
.weak _DYNAMIC
.hidden _DYNAMIC
.align 2
1: .word _DYNAMIC-2b
now the error is:
asm.S:7: error: operand expected
which is at
ldr a2, 1f
I do know already asm processing with any
other than ARCH=i386 was absent and/or incomplete, but i wanted to give
arm-tcc another try regardless.
I don't know much of the state of arm-asm either except that it was
added not that long ago. Obviously it does not recognize 'a2' as
a register or pseudo register.
If you know what 'a2' means then maybe you could rewrite the snippet
in some aspects such that it would actually work with tcc.
-- gr
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