即使使用-mpush-args -mno-accumulate-outgoing-args -mno-stack-arg-probe，GCC也不会推动args

Question

gcc不推（装配推）args，即使： -mpush-args -mno-accumulate-outgoing-args -mno-stack-arg-probe
但也没有任何错误。

我尝试了2种不同版本的gcc 我需要做什么？

编辑：我正在尝试构建一个简单的内核

char read_char(void)
{
    return 'A'; //Doesn't read any char, just return 'A'.
}

void print(char letter,char row,char col){
   char*VGA=(char*) 0xB8000;
   VGA[(row*80+col)*2]=letter;
}

void __main(void){} \\ just for the linker (ld)
void main(void){
   print(read_char(),2,3);
}

但是在集会时：

    .file   "test.c"
    .section    .text.unlikely,"x"
.LCOLDB0:
    .text
.LHOTB0:
    .p2align 4,,15
    .globl  read_char
    .def    read_char;  .scl    2;  .type   32; .endef
    .seh_proc   read_char
read_char:
    .seh_endprologue
    movl    $65, %eax
    ret
    .seh_endproc
    .section    .text.unlikely,"x"
.LCOLDE0:
    .text
.LHOTE0:
    .section    .text.unlikely,"x"
.LCOLDB1:
    .text
.LHOTB1:
    .p2align 4,,15
    .globl  print
    .def    print;  .scl    2;  .type   32; .endef
    .seh_proc   print
print:
    .seh_endprologue
    movsbl  %dl, %edx
    movsbl  %r8b, %r8d
    leal    (%rdx,%rdx,4), %eax
    sall    $4, %eax
    addl    %eax, %r8d
    addl    %r8d, %r8d
    movslq  %r8d, %r8
    movb    %cl, 753664(%r8)
    ret
    .seh_endproc
    .section    .text.unlikely,"x"
.LCOLDE1:
    .text
.LHOTE1:
    .section    .text.unlikely,"x"
.LCOLDB2:
    .text
.LHOTB2:
    .p2align 4,,15
    .globl  __main
    .def    __main; .scl    2;  .type   32; .endef
    .seh_proc   __main
__main:
    .seh_endprologue
    ret
    .seh_endproc
    .section    .text.unlikely,"x"
.LCOLDE2:
    .text
.LHOTE2:
    .def    __main; .scl    2;  .type   32; .endef
    .section    .text.unlikely,"x"
.LCOLDB3:
    .section    .text.startup,"x"
.LHOTB3:
    .p2align 4,,15
    .globl  main
    .def    main;   .scl    2;  .type   32; .endef
    .seh_proc   main
main:
    subq    $40, %rsp
    .seh_stackalloc 40
    .seh_endprologue
    call    __main
    movb    $65, 753990
    addq    $40, %rsp
    ret
    .seh_endproc
    .section    .text.unlikely,"x"
.LCOLDE3:
    .section    .text.startup,"x"
.LHOTE3:
    .ident  "GCC: (tdm64-1) 4.9.2"

NASM类型汇编：

main:
push   ebp
mov    ebp,esp

call read_char ;at eax the return

mov    eax,0x3 ;3rd arg the eax override! (have not the return of read_char anymore!)
mov    edx,0x2 ;2nd arg
mov    ecx,eax ;1st arg but here the gcc thinks the eax contains the return but the eax have been overridden!
call   print

pop ebp
ret