Re: RFC: Formalization of the Intel assembly syntax (PR53929)

[Jan Beulich <jbeulich@suse.com>]

On 23.01.2024 02:27, LIU Hao wrote:
> 在 2024-01-22 16:39, Jan Beulich 写道:
>> Right, I did some work in that direction a while ago. But iirc there are
>> still cases left to be addressed.
> 
> Attached is a draft patch for GCC, bootstrapped on {i686,x86_64}-w64-mingw32 with GCC 13.2 and 
> binutils 2.41.0.

Right, but this is very "draft". You can't blindly assume the gas you use
actually can deal with quotation.

> This addresses the issue when a bad name exists in the same translation unit. In the case of an 
> external symbol there's still an error:
> 
> ```
> extern int bx;
> int get(const char* p) { return p[bx]; }
> ```
> 
> ```
> lh_mouse@lhmouse-pc ~/Desktop $ x86_64-w64-mingw32-gcc -S -o - -masm=intel test.c | fgrep bx
>          mov     rax, QWORD PTR .refptr.bx[rip]
>          .section        .rdata$.refptr.bx, "dr"
>          .globl  .refptr.bx
> .refptr.bx:
>          .quad   bx

Sure, this one needs quoting then, too.

Jan

> lh_mouse@lhmouse-pc ~/Desktop $ x86_64-w64-mingw32-gcc  -masm=intel test.c | fgrep bx
> C:\Users\lh_mouse\AppData\Local\Temp\ccuyuu6c.s: Assembler messages:
> C:\Users\lh_mouse\AppData\Local\Temp\ccuyuu6c.s:29: Error: invalid use of register
> C:\Users\lh_mouse\AppData\Local\Temp\ccuyuu6c.s:29: Warning: register value used as expression
> lh_mouse@lhmouse-pc ~/Desktop $
> ```
> 
> 
> 
>