[PATCH v2] Fix static-binary lazy FPU context allocation

[Steve Ellcey]

On Thu, 2013-09-05 at 17:10 +0100, Maciej W. Rozycki wrote:

> 2013-09-05  Maciej W. Rozycki  <macro@codesourcery.com>
> 
> 	* csu/init-first.c (_init): Remove the !SHARED condition around
> 	FPU control word initialization.
> 	* elf/dl-support.c (_dl_fpu_control): New variable.
> 	(_dl_aux_init) <AT_FPUCW>: Initialize it.
> 	* math/test-fpucw.c [!FPU_CONTROL] (FPU_CONTROL): New macro.
> 	(main): Replace _FPU_DEFAULT with FPU_CONTROL throughout.
> 	* math/test-fpucw-static.c: New file.
> 	* math/test-fpucw-ieee.c: New file.
> 	* math/test-fpucw-ieee-static.c: New file.
> 	* math/Makefile (tests): Add `test-fpucw-ieee' and 
> 	`$(tests-static)'.
> 	(tests-static): New variable.
> 	[($(build-shared),yes)] ($(addprefix $(objpfx),$(tests))): Move 
> 	dependency to...
> 	[($(build-shared),yes)]
> 	($(addprefix $(objpfx),$(filter-out $(tests-static),$(tests)))):
> 	... this.
> 	[($(build-shared),yes)] ($(addprefix $(objpfx),$(tests-static))):
> 	New dependency.
> 
>   Maciej

Maciej,

I was running the glibc testsuite on MIPS and I noticed that the new
math/test-fpucw-ieee.c and math/test-fpucw-ieee-static.c tests you added
are failing to compile if I build and test glibc in soft-float mode.  I
am not sure if this is a MIPS specific problem or not.


test-fpucw.c: In function 'main':
test-fpucw-ieee.c:19:21: error: '_FPU_IEEE' undeclared (first use in this function)
 #define FPU_CONTROL _FPU_IEEE
                     ^
test-fpucw.c:37:14: note: in expansion of macro 'FPU_CONTROL'
   if (cw != (FPU_CONTROL & ~_FPU_RESERVED))
              ^
test-fpucw-ieee.c:19:21: note: each undeclared identifier is reported only once for each function it appears in
 #define FPU_CONTROL _FPU_IEEE
                     ^
test-fpucw.c:37:14: note: in expansion of macro 'FPU_CONTROL'
   if (cw != (FPU_CONTROL & ~_FPU_RESERVED))
              ^
test-fpucw-ieee.c: At top level:
test-fpucw-ieee.c:24:31: error: '_FPU_IEEE' undeclared here (not in a function)
 fpu_control_t __fpu_control = _FPU_IEEE;



Steve Ellcey
sellcey@mips.com