// File: /workspace/github_c_makefile_star2_O1/orempel[P]multiboot_tool/funkboot.c
// Function: funk_bridge_recv
static int funk_bridge_recv(struct funk_privdata *funk,
                            uint8_t command,
                            uint8_t *cause,
                            uint8_t *buffer,
                            int buffersize)
{
    uint8_t response[3];
    int len;

    len = funk_serial_read(funk->fd, response, sizeof(response));
    if (len != sizeof(response))
    {
        fprintf(stderr, "short read() from device\n");
        return -1;
    }

    if (response[0] != command)
    {
        fprintf(stderr, "invalid command response (0x%02x != 0x%02x)\n",
                response[0], command);

        return -1;
    }

    *cause = response[1];
    uint16_t length = response[2];
    uint16_t bufferpos = 0;

    while (length > 0)
    {

        /* free space in output buffer? */
        if ((bufferpos < buffersize) && (buffer != NULL))
        {
            uint16_t size = MIN(buffersize - bufferpos, length);

            len = funk_serial_read(funk->fd, buffer + bufferpos, size);
            if (len <= 0)
            {
                fprintf(stderr, "short read() from device (%d != %d)\n",
                        len, size);

                return -1;
            }

            bufferpos += len;
            length    -= len;
        }
        else
        {
            uint8_t dummy[256];

            /* no space in output buffer, but device still sends data -> do dummy read */
            uint16_t size = MIN(sizeof(dummy), length);

            len = funk_serial_read(funk->fd, dummy, size);
            if (len <= 0)
            {
                fprintf(stderr, "short read() from device (%d != %d)\n",
                        len, size);

                return -1;
            }

            length -= len;
        }
    }

#if (FUNK_BRIDGE_DEBUG == 1)
    char *dump = funk_print_data(buffer, bufferpos);
    printf("funk_bridge_recv() cmd=0x%02x cause=0x%02x length=0x%02x\n%s\n",
           command, *cause, length, dump);

    free(dump);
#endif

    return bufferpos;
}

// Assembly:
pushq %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
subq $0x118, %rsp            # imm = 0x118
movl %r8d, 0xc(%rsp)
movq %rcx, %r14
movq %rdx, %r12
movl %esi, %ebp
movq %rdi, %r15
movl 0x8(%rdi), %edi
leaq 0x9(%rsp), %rsi
movl $0x3, %edx
callq 0x5c28
cmpl $0x3, %eax
jne 0x5bee
movzbl 0x9(%rsp), %edx
cmpb %bpl, %dl
jne 0x5bf5
movb 0xa(%rsp), %al
movb %al, (%r12)
movzbl 0xb(%rsp), %r13d
testw %r13w, %r13w
je 0x5be5
movzwl %r13w, %eax
xorl %ebx, %ebx
testq %r14, %r14
je 0x5b88
movzwl %bx, %esi
movl 0xc(%rsp), %ecx
subl %esi, %ecx
jle 0x5b88
cmpl %eax, %ecx
cmovll %ecx, %eax
movl 0x8(%r15), %edi
addq %r14, %rsi
movzwl %ax, %r12d
movl %r12d, %edx
callq 0x5c28
movl %eax, %ebp
testl %eax, %eax
jle 0x5bc6
addl %ebp, %ebx
jmp 0x5bb4
movzwl %r13w, %eax
movl $0x100, %ecx            # imm = 0x100
cmpl %ecx, %eax
movl %r13d, %eax
cmovael %ecx, %eax
movl 0x8(%r15), %edi
movzwl %ax, %r12d
leaq 0x10(%rsp), %rsi
movl %r12d, %edx
callq 0x5c28
movl %eax, %ebp
testl %eax, %eax
jle 0x5bc6
subl %ebp, %r13d
testl %ebp, %ebp
jle 0x5c11
movzwl %r13w, %eax
testw %ax, %ax
jne 0x5b56
jmp 0x5be9
movq 0x742b(%rip), %rax      # 0xcff8
movq (%rax), %rdi
leaq 0x32b0(%rip), %rsi      # 0x8e87
movl %ebp, %edx
movl %r12d, %ecx
xorl %eax, %eax
callq 0x2170
jmp 0x5bb7
xorl %eax, %eax
jmp 0x5c16
movzwl %bx, %eax
jmp 0x5c16
callq 0x29ec
jmp 0x5c11
movzbl %bpl, %ecx
movq 0x73f8(%rip), %rax      # 0xcff8
movq (%rax), %rdi
leaq 0x3250(%rip), %rsi      # 0x8e5a
xorl %eax, %eax
callq 0x2170
movl $0xffffffff, %eax       # imm = 0xFFFFFFFF
addq $0x118, %rsp            # imm = 0x118
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
retq