Hi,

On 12/30/21 11:11, gaosong wrote:
>
> HI,
>
> On 2021/12/21 下午1:41, WANG Xuerui wrote:
>> +    case 0b001110: /* indexed, atomic, bounds-checking memory operations */
>> +        uint32_t sel = (insn >> 15) & 0b11111111111;
>> +
>> +        switch (sel) {
>> +        case 0b00000100000: /* stx.b */
>> +        case 0b00000101000: /* stx.h */
>> +        case 0b00000110000: /* stx.w */
>> +        case 0b00000111000: /* stx.d */
>> +        case 0b00001110000: /* fstx.s */
>> +        case 0b00001111000: /* fstx.d */
>> +        case 0b00011101100: /* fstgt.s */
>> +        case 0b00011101101: /* fstgt.d */
>> +        case 0b00011101110: /* fstle.s */
>> +        case 0b00011101111: /* fstle.d */
>> +        case 0b00011111000: /* stgt.b */
>> +        case 0b00011111001: /* stgt.h */
>> +        case 0b00011111010: /* stgt.w */
>> +        case 0b00011111011: /* stgt.d */
>> +        case 0b00011111100: /* stle.b */
>> +        case 0b00011111101: /* stle.h */
>> +        case 0b00011111110: /* stle.w */
>> +        case 0b00011111111: /* stle.d */
>> +        case 0b00011000000 ... 0b00011100011: /* am* insns */
>> +            return true;
>> +        }
>> +        break;
>> +    }
> We build qemu-x86_64 on LoongArch machine, but got an error,
> ../linux-user/host/loongarch64/host-signal.h:57:9: error: a label can only be part of a statement and a declaration is not a statement
>           uint32_t sel = (insn >> 15) & 0b11111111111;
>           ^~~~~~~~
> I think  we should define  'sel'  before:
>      /* Detect store by reading the instruction at the program counter.  */
>      switch ((insn >> 26) & 0b111111) {
> or
> case 0b001110:
>       {
>            uint32_t set = ...;
>            ...
>       }
I can't reproduce the error on both my development machines (amd64 and 
loongarch64), so I wonder if the issue is related to your particular 
setup (i.e. compiler versions and such)?