// File: /workspace/github_c_makefile_star2_O1/samtools[P]htslib/cram/cram_codecs.c
// Function: cram_xpack_decode_init
cram_codec *cram_xpack_decode_init(cram_block_compression_hdr *hdr,
                                   char *data, int size,
                                   enum cram_encoding codec,
                                   enum cram_external_type option,
                                   int version, varint_vec *vv) {
    cram_codec *c;
    char *cp = data;
    char *endp = data+size;

    if (!(c = calloc(1, sizeof(*c))))
        return NULL;

    c->codec  = E_XPACK;
    if (option == E_LONG)
        c->decode = cram_xpack_decode_long;
    else if (option == E_INT)
        c->decode = cram_xpack_decode_int;
    else if (option == E_BYTE_ARRAY || option == E_BYTE)
        c->decode = cram_xpack_decode_char;
    else {
        fprintf(stderr, "BYTE_ARRAYs not supported by this codec\n");
        goto malformed;
    }
    c->free = cram_xpack_decode_free;
    c->size = cram_xpack_decode_size;
    c->get_block = cram_xpack_get_block;
    c->describe = NULL;

    c->u.xpack.nbits = vv->varint_get32(&cp, endp, NULL);
    c->u.xpack.nval  = vv->varint_get32(&cp, endp, NULL);
    if (c->u.xpack.nbits >= 8  || c->u.xpack.nbits < 0 ||
        c->u.xpack.nval  > 256 || c->u.xpack.nval < 0)
        goto malformed;
    int i;
    for (i = 0; i < c->u.xpack.nval; i++) {
        uint32_t v = vv->varint_get32(&cp, endp, NULL);
        if (v >= 256)
            goto malformed;
        c->u.xpack.rmap[i] = v; // reverse map: e.g 0-3 to P,A,C,K
    }

    int encoding = vv->varint_get32(&cp, endp, NULL);
    int sub_size = vv->varint_get32(&cp, endp, NULL);
    if (sub_size < 0 || endp - cp < sub_size)
        goto malformed;
    c->u.xpack.sub_codec = cram_decoder_init(hdr, encoding, cp, sub_size,
                                             option, version, vv);
    if (c->u.xpack.sub_codec == NULL)
        goto malformed;
    cp += sub_size;

    if (cp - data != size
        || c->u.xpack.nbits < 0 || c->u.xpack.nbits > 8 * sizeof(int64_t)) {
    malformed:
        fprintf(stderr, "Malformed xpack header stream\n");
        cram_xpack_decode_free(c);
        return NULL;
    }

    return c;
}

// Assembly:
pushq %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
subq $0x38, %rsp
movl %r9d, %ebp
movl %r8d, %r15d
movl %edx, %r13d
movq %rsi, %r14
movq %rdi, %r12
movq %rsi, 0x10(%rsp)
movl $0x1, %edi
movl $0x880, %esi            # imm = 0x880
callq 0x4300
testq %rax, %rax
je 0x9085e
movq %rax, %rbx
movl $0x33, (%rax)
cmpl $0x2, %r15d
movl %ebp, 0x1c(%rsp)
movq %r15, 0x30(%rsp)
movq %r12, 0x28(%rsp)
je 0x90708
cmpl $0x1, %r15d
jne 0x90711
leaq -0x30e(%rip), %rax      # 0x903f8
jmp 0x90725
leaq -0x37c(%rip), %rax      # 0x90393
jmp 0x90725
leal -0x3(%r15), %eax
cmpl $0x2, %eax
jae 0x90851
leaq -0x275(%rip), %rax      # 0x904b0
movq 0x70(%rsp), %r15
movslq %r13d, %rcx
movq %rcx, 0x20(%rsp)
leaq (%r14,%rcx), %r13
movq %rax, 0x28(%rbx)
leaq -0x10f(%rip), %rax      # 0x90632
movq %rax, 0x20(%rbx)
leaq -0xfb(%rip), %rax       # 0x90651
movq %rax, 0x40(%rbx)
leaq -0xdc(%rip), %rax       # 0x9067b
movq %rax, 0x50(%rbx)
movq $0x0, 0x58(%rbx)
leaq 0x10(%rsp), %rbp
movq %rbp, %rdi
movq %r13, %rsi
xorl %edx, %edx
callq *0x18(%r15)
movq %rax, %r12
movl %r12d, 0x60(%rbx)
movq %rbp, %rdi
movq %r13, %rsi
xorl %edx, %edx
callq *0x18(%r15)
movl %eax, 0x78(%rbx)
cmpl $0x7, %r12d
ja 0x90856
cmpl $0x100, %eax            # imm = 0x100
ja 0x90856
cmpl $0x0, 0x78(%rbx)
jle 0x907d5
xorl %r12d, %r12d
leaq 0x10(%rsp), %rbp
movq %rbp, %rdi
movq %r13, %rsi
xorl %edx, %edx
callq *0x18(%r15)
cmpl $0xff, %eax
ja 0x90856
movl %eax, 0x7c(%rbx,%r12,4)
incq %r12
movslq 0x78(%rbx), %rax
cmpq %rax, %r12
jl 0x907ad
leaq 0x10(%rsp), %r12
movq %r12, %rdi
movq %r13, %rsi
xorl %edx, %edx
callq *0x18(%r15)
movq %rax, %rbp
movq %r12, %rdi
movq %r13, %rsi
xorl %edx, %edx
callq *0x18(%r15)
testl %eax, %eax
js 0x90856
movq 0x10(%rsp), %rdx
subq %rdx, %r13
movl %eax, %r12d
andl $0x7fffffff, %r12d      # imm = 0x7FFFFFFF
cmpq %r12, %r13
jl 0x90856
movq %r15, (%rsp)
movq 0x28(%rsp), %rdi
movl %ebp, %esi
movl %eax, %ecx
movq 0x30(%rsp), %r8
movl 0x1c(%rsp), %r9d
callq 0x90872
movq %rax, 0x70(%rbx)
testq %rax, %rax
je 0x90856
addq 0x10(%rsp), %r12
movq %r12, 0x10(%rsp)
subq %r14, %r12
cmpq 0x20(%rsp), %r12
jne 0x90856
cmpl $0x41, 0x60(%rbx)
jb 0x90860
jmp 0x90856
callq 0x4be5
movq %rbx, %rdi
callq 0x4c01
xorl %ebx, %ebx
movq %rbx, %rax
addq $0x38, %rsp
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
retq