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patches/glibc/ports-2.12.1/460-alpha-fix-gcc-4.1-warnings.patch
author Michael Hope <michael.hope@linaro.org>
Wed Oct 19 15:27:32 2011 +1300 (2011-10-19)
changeset 2739 f320e22f2cba
permissions -rw-r--r--
arch: add softfp support

Some architectures support a mixed hard/soft floating point, where
the compiler emits hardware floating point instructions, but passes
the operands in core (aka integer) registers.

For example, ARM supports this mode (to come in the next changeset).

Add support for softfp cross compilers to the GCC and GLIBC
configuration. Needed for Ubuntu and other distros that are softfp.

Signed-off-by: Michael Hope <michael.hope@linaro.org>
[yann.morin.1998@anciens.enib.fr: split the original patch]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 2006-05-30  Falk Hueffner <falk@debian.org>

     2 

     3 	* sysdeps/unix/sysv/linux/alpha/ioperm.c: force the architecture

     4 	  to ev6 in assembly code.

     5 

     6 {standard input}: Assembler messages:

     7 {standard input}:341: Error: macro requires $at register while noat in effect

     8 {standard input}:374: Error: macro requires $at register while noat in effect

     9 {standard input}:438: Error: macro requires $at register while noat in effect

    10 {standard input}:471: Error: macro requires $at register while noat in effect

    11 make[3]: *** [/tmp/buildd/glibc-2.3.6/build-tree/alpha-libc/misc/ioperm.o] Error 1

    12 

    13 Hrm. gcc puts .arch ev4 into the .s, and this overrides -mev6 for as.

    14 I cannot really think of anything better than

    15 

    16  ports/sysdeps/unix/sysv/linux/alpha/ioperm.c |    8 ++++----

    17  1 file changed, 4 insertions(+), 4 deletions(-)

    18 

    19 diff -durN glibc-2.12.1.orig/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/ioperm.c glibc-2.12.1/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/ioperm.c

    20 --- glibc-2.12.1.orig/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/ioperm.c	2009-05-16 10:36:20.000000000 +0200

    21 +++ glibc-2.12.1/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/ioperm.c	2009-11-13 00:50:57.000000000 +0100

    22 @@ -178,13 +178,13 @@

    23  static inline void

    24  stb_mb(unsigned char val, unsigned long addr)

    25  {

    26 -  __asm__("stb %1,%0; mb" : "=m"(*(vucp)addr) : "r"(val));

    27 +  __asm__(".arch ev6; stb %1,%0; mb" : "=m"(*(vucp)addr) : "r"(val));

    28  }

    29  

    30  static inline void

    31  stw_mb(unsigned short val, unsigned long addr)

    32  {

    33 -  __asm__("stw %1,%0; mb" : "=m"(*(vusp)addr) : "r"(val));

    34 +  __asm__(".arch ev6; stw %1,%0; mb" : "=m"(*(vusp)addr) : "r"(val));

    35  }

    36  

    37  static inline void

    38 @@ -356,7 +356,7 @@

    39    unsigned long int addr = dense_port_to_cpu_addr (port);

    40    unsigned char r;

    41  

    42 -  __asm__ ("ldbu %0,%1" : "=r"(r) : "m"(*(vucp)addr));

    43 +  __asm__ (".arch ev6; ldbu %0,%1" : "=r"(r) : "m"(*(vucp)addr));

    44    return r;

    45  }

    46  

    47 @@ -366,7 +366,7 @@

    48    unsigned long int addr = dense_port_to_cpu_addr (port);

    49    unsigned short r;

    50  

    51 -  __asm__ ("ldwu %0,%1" : "=r"(r) : "m"(*(vusp)addr));

    52 +  __asm__ (".arch ev6; ldwu %0,%1" : "=r"(r) : "m"(*(vusp)addr));

    53    return r;

    54  }

    55  

    56 diff -durN glibc-2.12.1.orig/ports/sysdeps/unix/sysv/linux/alpha/ioperm.c glibc-2.12.1/ports/sysdeps/unix/sysv/linux/alpha/ioperm.c
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