found that key problem here is
> __thread G *g __asm__("" "runtime.g»);
in form of
> __thread G *g ;
it works, so, question - how to use this asm synonym for __thread variables in
10.3?
> 9 июня 2021 г., в 17:01, Alexander Tormasov via users
> <[email protected]> написал(а):
>
> small c file:
>
> typedef int G;
> __thread G *g __asm__("" "runtime.g");
> G* runtime_g(void) __attribute__ ((noinline, no_split_stack));
> G* runtime_g(void) { return g; }
>
> during compilation using genode-x86-gcc 10.3 error in asm (and checked
> genode-x86-as as well):
> tt1.s: Assembler messages:
> tt1.s:22: Error: junk at end of line, first unrecognized character is `*'
> tt1.s:25: Error: unrecognized symbol type ""
> tt1.s:25: Error: junk at end of line, first unrecognized character is `*'
> tt1.s:26: Error: expected comma after name `__emutls_v.' in .size directive
> tt1.s:27: Error: invalid character '*' in mnemonic
> tt1.s:13: Error: invalid operands (*UND* and *UND* sections) for `*’
>
> generated asm:
> .file "tt1.c"
> .text
> .globl runtime_g
> .type runtime_g, @function
> runtime_g:
> .LFB0:
> .cfi_startproc
> pushq %rbp
> .cfi_def_cfa_offset 16
> .cfi_offset 6, -16
> movq %rsp, %rbp
> .cfi_def_cfa_register 6
> movl $__emutls_v.*runtime.g, %edi
> call __emutls_get_address
> movq (%rax), %rax
> popq %rbp
> .cfi_def_cfa 7, 8
> ret
> .cfi_endproc
> .LFE0:
> .size runtime_g, .-runtime_g
> .globl __emutls_v.*runtime.g
> ^^^^^^^ first error line ^^^^^^^^^^^^^^^^^
> .data
> .align 32
> .type __emutls_v.*runtime.g, @object
> .size __emutls_v.*runtime.g, 32
> __emutls_v.*runtime.g:
> .quad 8
> .quad 8
> .quad 0
> .quad 0
> .ident "GCC: (GNU) 10.3.0"
>
>
>
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