[Qemu-devel] Adding a parameter to a helper

[Jose Cano Reyes]

Hi all,

I am trying to add a new integer parameter to an existing helper and 
call this helper in "targeti386/translate.c". I have several problems:

1) I cannot add an integer parameter to the helper, the compiler says 
that it must be "TCGv_i32", despite I declare this new parameter as 
"int" in "target-i386/helper.h". Why?

2) If I use the the function "tcg_const_i32" in order to convert my 
integer to TCGv_i32 I always obtain the same output value, that is:

        tcg_const_i32(10) = 1074260520
        tcg_const_i32(22) = 1074260520
        tcg_const_i32(30) = 1074260520
        ...

3) Moreover, wen I pass this value in the helper call 
"gen_helper_flds_ST0", that is:

     gen_helper_flds_ST0(cpu_tmp2_i32, tcg_const_i32(MY_INT_VALUE));

    How can I use MY_INT_VALUE later in the function "tcg_gen_helperN" 
. This function is called by DEF_HELPER_FLAGS2, which corresponds to 
DEF_HELPER_2 (definition of my helper).


Thanks in advance,

   Jose Cano.