67 lines
2.3 KiB
Diff
67 lines
2.3 KiB
Diff
http://lists.debian.org/debian-arm/2007/05/msg00039.html
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From: Lennert Buytenhek <buytenh@wantstofly.org>
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Hi,
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The reason that building nss (i.e., firefox) would segfault on ARM EABI
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systems is an assumption about the layout of the jmp_buf structure in
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the nspr library (which nss depends on) that does hold on old-ABI but
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no longer holds on EABI. The attached patch fixes this assumption,
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and fixes the shlibsign segfault during the building of nss (it also
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fixes a floating point byte order assumption.)
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Looks sane?
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It's of course a stupid idea to depend on a particular layout of the
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jmp_buf structure in application programs, but oh well. People write
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ugly buggy code, film at 11.
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--- mozilla/nsprpub/pr/src/misc/prdtoa.c.orig 2007-05-06 02:39:00.000000000 +0200
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+++ mozilla/nsprpub/pr/src/misc/prdtoa.c 2007-05-06 02:39:22.000000000 +0200
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@@ -59,8 +59,8 @@
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/* FIXME: deal with freelist and p5s. */
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}
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-#if defined(__arm) || defined(__arm__) || defined(__arm26__) \
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- || defined(__arm32__)
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+#if (defined(__arm) || defined(__arm__) || defined(__arm26__) \
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+ || defined(__arm32__)) && !defined(__ARM_EABI__) && !defined(__ARMEB__)
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#define IEEE_ARM
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#elif defined(IS_LITTLE_ENDIAN)
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#define IEEE_8087
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--- mozilla/nsprpub/pr/include/md/_linux.h.orig 2007-05-06 02:39:45.000000000 +0200
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+++ mozilla/nsprpub/pr/include/md/_linux.h 2007-05-06 02:40:57.000000000 +0200
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@@ -346,7 +346,7 @@
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#error "Linux/MIPS pre-glibc2 not supported yet"
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#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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-#elif defined(__arm__)
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+#elif defined(__arm__) && !defined(__ARM_EABI__)
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/* ARM/Linux */
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[20]
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@@ -358,6 +358,18 @@
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#error "ARM/Linux pre-glibc2 not supported yet"
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#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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+#elif defined(__arm__) && defined(__ARM_EABI__)
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+/* ARM/Linux */
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+#if defined(__GLIBC__) && __GLIBC__ >= 2
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+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[8]
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+#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[7] = (val))
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+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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+#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[7])
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+#define _MD_SP_TYPE __ptr_t
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+#else
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+#error "ARM/Linux pre-glibc2 not supported yet"
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+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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+
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#else
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#error "Unknown CPU architecture"
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