LEA does not support constant expressions exceeding 32-bits

[jlawson-yasm@…]

NASM allows use of "LEA" expressions that exceed 32-bits and silently wraps 
them for you.  YASM gives an error and refuses to compile when this is done.  
In NASM, this works but YASM this fails with "invalid effective address":

   %define P         0xB7E15163
   %define Q         0x9E3779B9
   lea eax,[eax+P+Q]

Normally YASM seems to try to give a warning for many other types of 
instructions (mov, add, sub, ...).  For example, in NASM this compiles without 
warning, but YASM kindly prints out "warning: value does not fit in 32 bit 
field" which is good.

   %define P         0xB7E15163
   %define Q         0x9E3779B9
   add eax,P+Q

YASM should be consistent and allow the LEA with large constants, but give a 
warning if it wants to.

[jlawson-yasm@…]

Please note that the above was tested with YASM 0.3.0

[peter@…]

x86 arch specific, I'll take this one.

[peter@…]

Starting work on this.

[peter@…]

Fixed in modules/arch/x86/x86expr.c r1.63.

Thanks for the bug report!