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How to define a macro function

老鹰 over 10 years ago

hi,

I want to ask a question.

How to define a macro function that can be called by C language in armasm?

I know that in GNU can be used in the following way:

.macro push_x1_x12

push x1,x2

push x3,x4

push x5,x6

push x7,x8

push x9,x10

push x11,x12

.endm

ENTRY(test)

.......

push_x1_x12
......
ENDPROC(test)

Now in armasm, I used as follow :

MACRO

push_x1_x12

push x1,x2

push x3,x4

push x5,x6

push x7,x8

push x9,x10

push x11,x12

MEND

But how to expand the macro that can be called by C language??

Parents

0 Carlos Delfino over 10 years ago in reply to 老鹰

As described in the suggested by albanrampon to link section 6.4 Inline assembly language syntax with the __asm keyword in C and C++, the correct syntax is:

//   define:
//-------------------------------------
#define  push_x1_x12  \
__asm {                 \
    "push x1,x2   \n"   \
    "push x3,x4   \n"   \
    "push x5,x6   \n"   \
    "push x7,x8   \n"   \
    "push x9,x10  \n"   \
    "push x11,x12 \n"   \
}

//call
//----------------------------------------
void test_tt(void)
{
push_x1_x12;
}

See lacked the quotes involving the mnemonics and the line break.

Reply

0 Carlos Delfino over 10 years ago in reply to 老鹰

As described in the suggested by albanrampon to link section 6.4 Inline assembly language syntax with the __asm keyword in C and C++, the correct syntax is:

//   define:
//-------------------------------------
#define  push_x1_x12  \
__asm {                 \
    "push x1,x2   \n"   \
    "push x3,x4   \n"   \
    "push x5,x6   \n"   \
    "push x7,x8   \n"   \
    "push x9,x10  \n"   \
    "push x11,x12 \n"   \
}

//call
//----------------------------------------
void test_tt(void)
{
push_x1_x12;
}

See lacked the quotes involving the mnemonics and the line break.

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