recipes/mozilla/files/eabi-fix.patch

   1 http://lists.debian.org/debian-arm/2007/05/msg00039.html
   2
   3 From: Lennert Buytenhek <buytenh@wantstofly.org>
   4
   5 Hi,
   6
   7 The reason that building nss (i.e., firefox) would segfault on ARM EABI
   8 systems is an assumption about the layout of the jmp_buf structure in
   9 the nspr library (which nss depends on) that does hold on old-ABI but
  10 no longer holds on EABI.  The attached patch fixes this assumption,
  11 and fixes the shlibsign segfault during the building of nss (it also
  12 fixes a floating point byte order assumption.)
  13
  14 Looks sane?
  15
  16 It's of course a stupid idea to depend on a particular layout of the
  17 jmp_buf structure in application programs, but oh well.  People write
  18 ugly buggy code, film at 11.
  19
  20
  21 --- mozilla/nsprpub/pr/src/misc/prdtoa.c.orig        2007-05-06 02:39:00.000000000 +0200
  22 +++ mozilla/nsprpub/pr/src/misc/prdtoa.c     2007-05-06 02:39:22.000000000 +0200
  23 @@ -59,8 +59,8 @@
  24      /* FIXME: deal with freelist and p5s. */
  25  }
  26
  27 -#if defined(__arm) || defined(__arm__) || defined(__arm26__) \
  28 -    || defined(__arm32__)
  29 +#if (defined(__arm) || defined(__arm__) || defined(__arm26__) \
  30 +    || defined(__arm32__)) && !defined(__ARM_EABI__) && !defined(__ARMEB__)
  31  #define IEEE_ARM
  32  #elif defined(IS_LITTLE_ENDIAN)
  33  #define IEEE_8087
  34 --- mozilla/nsprpub/pr/include/md/_linux.h.orig      2007-05-06 02:39:45.000000000 +0200
  35 +++ mozilla/nsprpub/pr/include/md/_linux.h   2007-05-06 02:40:57.000000000 +0200
  36 @@ -346,7 +346,7 @@
  37  #error "Linux/MIPS pre-glibc2 not supported yet"
  38  #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
  39
  40 -#elif defined(__arm__)
  41 +#elif defined(__arm__) && !defined(__ARM_EABI__)
  42  /* ARM/Linux */
  43  #if defined(__GLIBC__) && __GLIBC__ >= 2
  44  #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[20]
  45 @@ -358,6 +358,18 @@
  46  #error "ARM/Linux pre-glibc2 not supported yet"
  47  #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
  48
  49 +#elif defined(__arm__) && defined(__ARM_EABI__)
  50 +/* ARM/Linux */
  51 +#if defined(__GLIBC__) && __GLIBC__ >= 2
  52 +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[8]
  53 +#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[7] = (val))
  54 +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
  55 +#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[7])
  56 +#define _MD_SP_TYPE __ptr_t
  57 +#else
  58 +#error "ARM/Linux pre-glibc2 not supported yet"
  59 +#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
  60 +
  61  #else
  62
  63  #error "Unknown CPU architecture"
  64
  65
  66