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Re: [Qemu-devel] [Qemu-arm] [PATCH 0/4] softfloat: fix some helper defin


From: Philippe Mathieu-Daudé
Subject: Re: [Qemu-devel] [Qemu-arm] [PATCH 0/4] softfloat: fix some helper definitions
Date: Fri, 3 Nov 2017 18:51:19 -0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0

> On 11/03/2017 05:26 PM, Laurent Vivier wrote:
>> This series fixes some errors found by
>> enabling USE_SOFTFLOAT_STRUCT_TYPES.
[...]
>
> I'm getting those errors:
> 
> $ make subdir-arm-softmmu -j2
> 
> /source/qemu/migration/vmstate-types.c:430:5: error: conversion to
> non-scalar type requested
>      qemu_put_be64(f, float64_val(*v));
>      ^~~~~~~~~~~~~
> make: *** [migration/vmstate-types.o] Error 1
> 
> In file included from /source/qemu/fpu/softfloat.c:87:0:
> /source/qemu/fpu/softfloat-specialize.h: In function ‘float16_default_nan’:
> /source/qemu/include/fpu/softfloat.h:117:26: error: expected expression
> before ‘{’ token
>  #define const_float16(x) { x }
>                           ^
> /source/qemu/fpu/softfloat-specialize.h:95:12: note: in expansion of
> macro ‘const_float16’
>      return const_float16(0x7E00);
>             ^~~~~~~~~~~~~
> make: *** [fpu/softfloat.o] Error 1
> 

Also:

$ make subdir-armeb-linux-user -j2

  CC      linux-user/signal.o
In file included from /source/qemu/linux-user/signal.c:24:0:
/source/qemu/linux-user/signal.c: In function ‘restore_sigframe_v2_vfp’:
/source/qemu/linux-user/qemu.h:472:8: error: lvalue required as left
operand of assignment
   ((x) = (typeof(*hptr))(                                             \
        ^
/source/qemu/linux-user/qemu.h:481:31: note: in expansion of macro
‘__get_user_e’
 # define __get_user(x, hptr)  __get_user_e(x, hptr, be)
                               ^~~~~~~~~~~~
/source/qemu/linux-user/signal.c:2209:9: note: in expansion of macro
‘__get_user’
         __get_user(float64_val(env->vfp.regs[i]),
&vfpframe->ufp.fpregs[i]);
         ^~~~~~~~~~
/source/qemu/linux-user/qemu.h:477:13: error: left-hand operand of comma
expression has no effect [-Werror=unused-value]
      (hptr)), (void)0)
             ^
/source/qemu/linux-user/qemu.h:481:31: note: in expansion of macro
‘__get_user_e’
 # define __get_user(x, hptr)  __get_user_e(x, hptr, be)
                               ^~~~~~~~~~~~
/source/qemu/linux-user/signal.c:2209:9: note: in expansion of macro
‘__get_user’
         __get_user(float64_val(env->vfp.regs[i]),
&vfpframe->ufp.fpregs[i]);
         ^~~~~~~~~~
cc1: all warnings being treated as errors
/source/qemu/rules.mak:66: recipe for target 'linux-user/signal.o' failed

  CC      linux-user/arm/nwfpe/fpa11_cpdt.o
...
/source/qemu/linux-user/arm/nwfpe/fpa11_cpdt.c:37:4: note: in expansion
of macro ‘get_user_u32’
    get_user_u32(float32_val(fpa11->fpreg[Fn].fSingle), addr);
    ^~~~~~~~~~~~
/source/qemu/linux-user/qemu.h:515:13: error: lvalue required as left
operand of assignment
         (x) = 0;       \
             ^
/source/qemu/linux-user/qemu.h:536:32: note: in expansion of macro
‘get_user’
 #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
                                ^~~~~~~~
/source/qemu/linux-user/arm/nwfpe/fpa11_cpdt.c:37:4: note: in expansion
of macro ‘get_user_u32’
    get_user_u32(float32_val(fpa11->fpreg[Fn].fSingle), addr);
    ^~~~~~~~~~~~



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