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patches/uClibc/0.9.32.1/100-fix-TLS-DTPREL-TPREL-macros.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 17 22:43:07 2011 +0200 (2011-07-17)
changeset 2893 a8a65758664f
parent 2667 3e81e43c0e14
permissions -rw-r--r--
cc/gcc: do not use the core pass-2 to build the baremetal compiler

In case we build a baremetal compiler, use the standard passes:
- core_cc is used to build the C library;
- as such, it is meant to run on build, not host;
- the final compiler is meant to run on host;

As the current final compiler step can not build a baremetal compiler,
call the core backend from the final step.

NB: Currently, newlib is built during the start_files pass, so we have
to have a core compiler by then... Once we can build the baremetal
compiler from the final cc step, then we can move the newlib build to
the proper step, and then get rid of the core pass-1 static compiler...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 ldso/mips: workaround for missing TLS macros in elfinterpret.c

     2 

     3 These macros declarations are missing, so gcc believes the code is calling

     4 a function, so any later linking will fail.

     5 

     6 Work this around by copying the mcaros from:

     7    libpthread/nptl/sysdeps/mips/dl-tls.h

     8 

     9 We can't include the header because of incompatible symbol declarations,

    10 so we just copy the macros for now.

    11 

    12 ---->  THIS IS A DIRTY HACK!  <----

    13 

    14 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

    15 

    16 diff -durN uClibc-0.9.32.orig/ldso/ldso/mips/elfinterp.c uClibc-0.9.32/ldso/ldso/mips/elfinterp.c

    17 --- uClibc-0.9.32.orig/ldso/ldso/mips/elfinterp.c	2011-06-08 21:35:20.000000000 +0200

    18 +++ uClibc-0.9.32/ldso/ldso/mips/elfinterp.c	2011-09-12 14:02:37.553628824 +0200

    19 @@ -34,6 +34,21 @@

    20  

    21  #define OFFSET_GP_GOT 0x7ff0

    22  

    23 +/* The thread pointer points 0x7000 past the first static TLS block.  */

    24 +#define TLS_TP_OFFSET           0x7000

    25 +

    26 +/* Dynamic thread vector pointers point 0x8000 past the start of each

    27 + *    TLS block.  */

    28 +#define TLS_DTV_OFFSET          0x8000

    29 +

    30 +/* Compute the value for a GOTTPREL reloc.  */

    31 +#define TLS_TPREL_VALUE(sym_map, sym_val) \

    32 +  ((sym_map)->l_tls_offset + sym_val - TLS_TP_OFFSET)

    33 +

    34 +/* Compute the value for a DTPREL reloc.  */

    35 +#define TLS_DTPREL_VALUE(sym_val) \

    36 +  (sym_val - TLS_DTV_OFFSET)

    37 +

    38  unsigned long __dl_runtime_resolve(unsigned long sym_index,

    39  	unsigned long old_gpreg)

    40  {
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