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b6663eb107
* pass --enable-debug-frame on aarch64 architecture
* include patches:
- aarch64 port (backported from upstream)
- Support-building-with-older-compilers (fix undefined reference to
`unreachable' on older compilers)
(From OE-Core rev: 07cdb1b6583a6cf379de769bdf392c90b49692db)
Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
73 lines
1.9 KiB
Diff
73 lines
1.9 KiB
Diff
From 10b064ffe902d5af31bb49bd8e4f03c545f8d462 Mon Sep 17 00:00:00 2001
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From: Ladislav Michl <ladis@linux-mips.org>
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Date: Tue, 13 Nov 2012 11:19:47 +0100
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Subject: [PATCH] Support building with older compilers.
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Add a check for __builtin_unreachable.
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Upstream-Status: Pending
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---
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configure.ac | 11 +++++++++++
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include/libunwind_i.h | 6 ++++++
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src/arm/Gresume.c | 2 +-
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src/sh/Gresume.c | 2 +-
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4 files changed, 19 insertions(+), 2 deletions(-)
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--- a/configure.ac
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+++ b/configure.ac
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@@ -285,6 +285,17 @@ if test x$have__builtin___clear_cache =
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fi
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AC_MSG_RESULT([$have__builtin___clear_cache])
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+AC_MSG_CHECKING([for __builtin_unreachable])
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+AC_LINK_IFELSE(
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+ [AC_LANG_PROGRAM([[]], [[__builtin_unreachable()]])],
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+ [have__builtin_unreachable=yes],
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+ [have__builtin_unreachable=no])
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+if test x$have__builtin_unreachable = xyes; then
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+ AC_DEFINE([HAVE__BUILTIN_UNREACHABLE], [1],
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+ [Defined if __builtin_unreachable() is available])
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+fi
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+AC_MSG_RESULT([$have__builtin_unreachable])
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+
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AC_MSG_CHECKING([for __sync atomics])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[]], [[
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--- a/include/libunwind_i.h
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+++ b/include/libunwind_i.h
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@@ -72,6 +72,12 @@ WITH THE SOFTWARE OR THE USE OR OTHER DE
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# endif
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#endif
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+#if defined(HAVE__BUILTIN_UNREACHABLE)
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+# define unreachable() __builtin_unreachable()
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+#else
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+# define unreachable() do { } while (1)
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+#endif
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+
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#ifdef DEBUG
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# define UNW_DEBUG 1
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#else
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--- a/src/arm/Gresume.c
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+++ b/src/arm/Gresume.c
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@@ -96,7 +96,7 @@ arm_local_resume (unw_addr_space_t as, u
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: : "r" (c->sigcontext_sp), "r" (c->sigcontext_pc)
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);
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}
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- __builtin_unreachable();
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+ unreachable();
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#else
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printf ("%s: implement me\n", __FUNCTION__);
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#endif
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--- a/src/sh/Gresume.c
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+++ b/src/sh/Gresume.c
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@@ -109,7 +109,7 @@ sh_local_resume (unw_addr_space_t as, un
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"r" (c->sigcontext_pc)
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);
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}
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- __builtin_unreachable();
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+ unreachable();
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#endif
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return -UNW_EINVAL;
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}
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