My assembler / assembler console so far

........
    registers["ax"]     =   { SIZE_WORD, Rw, NA, 0, };
    registers["bx"]     =   { SIZE_WORD, Rw, NA, 3, };
    registers["cx"]     =   { SIZE_WORD, Rw, NA, 1, };
    registers["dx"]     =   { SIZE_WORD, Rw, NA, 2, };
    registers["bp"]     =   { SIZE_WORD, Rw, NA, 5, };
    registers["si"]     =   { SIZE_WORD, Rw, NA, 6, };
    registers["di"]     =   { SIZE_WORD, Rw, NA, 7, };
    registers["sp"]     =   { SIZE_WORD, Rw, NA, 4, };

    registers["r8w"]    =   { SIZE_WORD, Rw, NA, 0, };
    registers["r9w"]    =   { SIZE_WORD, Rw, NA, 1, };
    registers["r10w"]   =   { SIZE_WORD, Rw, NA, 2, };
    registers["r11w"]   =   { SIZE_WORD, Rw, NA, 3, };
    registers["r12w"]   =   { SIZE_WORD, Rw, NA, 4, };
    registers["r13w"]   =   { SIZE_WORD, Rw, NA, 5, };
    registers["r14w"]   =   { SIZE_WORD, Rw, NA, 6, };
    registers["r15w"]   =   { SIZE_WORD, Rw, NA, 7, };
........

    instructions["push"]    =   { 2, G2, Ib|Iz|Rw|Rq|M, 0x50,    0x51,    0x52,     0x53,     0x54,     0x55,     0x56,     0x57,     0x0E,  0x1E,  0x06,  0x16,  0xA0,  0xA8,  0x68,  0x6A }; //
    instructions["pop"]     =   { 2, G2, Rw|Rq|M,       0x58,    0x59,    0x5A,     0x5B,     0x5C,     0x5D,     0x5E,     0x5F,     0x00,  0x1D,  0x07,  0x17,  0xA1,  0xA9,  0x00,  0x00 }; //


[user@n0 asmconsole]$ ./asmconsole
>> push ax
>> push cx
>> push bx
>> push dx
>> push si
>> push di
>> code
 66 50          push ax
 66 51          push cx
 66 53          push bx
 66 52          push dx
 66 56          push si
 66 57          push di

>>

[user@n0 asmconsole]$ objdump -D probe.o

probe.o:     file format elf64-x86-64


Disassembly of section .text:

0000000000000000 <_start>:
   0:   66 50                   push   %ax
   2:   66 51                   push   %cx
   4:   66 53                   push   %bx
   6:   66 52                   push   %dx
   8:   66 56                   push   %si
   a:   66 57                   push   %di
[user@n0 asmconsole]$