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| author | Mike Frysinger <vapier@gentoo.org> | 2013-03-10 11:49:29 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2013-03-12 06:00:05 -0400 |
| commit | c5abd7ce01539dc5224f7533c9d1048900992317 (patch) | |
| tree | cca3fe48d201c7078fd530f55913ce9ce01eec83 /ports/sysdeps/ia64/dl-fptr.h | |
| parent | b7845b638818f32401070f00a61d3b42595ab223 (diff) | |
| download | glibc-c5abd7ce01539dc5224f7533c9d1048900992317.tar.gz glibc-c5abd7ce01539dc5224f7533c9d1048900992317.tar.xz glibc-c5abd7ce01539dc5224f7533c9d1048900992317.zip | |
ia64: fix strict aliasing warnings with func descriptors
Function pointers on ia64 are like parisc -- they're plabels. While the parisc port enjoys a gcc builtin for extracting the address here, ia64 has no such luck. Casting & dereferencing in one go triggers a strict aliasing warning. Use a union to fix that. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'ports/sysdeps/ia64/dl-fptr.h')
| -rw-r--r-- | ports/sysdeps/ia64/dl-fptr.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/ports/sysdeps/ia64/dl-fptr.h b/ports/sysdeps/ia64/dl-fptr.h index c2bef6c288..447c098aff 100644 --- a/ports/sysdeps/ia64/dl-fptr.h +++ b/ports/sysdeps/ia64/dl-fptr.h @@ -32,4 +32,14 @@ #define ELF_MACHINE_LOAD_ADDRESS(var, symbol) \ asm ("movl %0 = @gprel (" #symbol ");; add %0 = %0, gp" : "=&r" (var)); +/* We don't have a gcc helper to extract the plabel info. */ +#define ELF_PTR_TO_FDESC(ptr) \ + ({ union { \ + void *_ptr; \ + struct fdesc *_fdesc; \ + } _u; \ + _u._ptr = ptr; \ + _u._fdesc; \ + }) + #endif /* !dl_ia64_fptr_h */ |