ia-64 opcodes

Hello all,
Does anyone have macros for emitting Itanium instructions like the following:
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IA-32 instructions:

typedef enum {
    X86_EAX = 0,
    X86_ECX = 1,
    X86_EDX = 2,
    X86_EBX = 3,
    X86_ESP = 4,
    X86_EBP = 5,
    X86_ESI = 6,
    X86_EDI = 7,
    X86_NREG
} X86_Reg_No;

typedef enum {
    X86_ADD = 0,
    X86_OR  = 1,
    X86_ADC = 2,
    X86_SBB = 3,
    X86_AND = 4,
    X86_SUB = 5,
    X86_XOR = 6,
    X86_CMP = 7,
    X86_NALU
} X86_ALU_Opcode;

#define x86_imm_emit32(inst,imm)     \
    do {    \
            x86_imm_buf imb; imb.val = (int) (imm); \
            *(inst)++ = imb.b [0];  \
            *(inst)++ = imb.b [1];  \
            *(inst)++ = imb.b [2];  \
            *(inst)++ = imb.b [3];  \
    } while (0)

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Thanks in advance.
Gowri Kumar