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authorRoland McGrath <roland@redhat.com>2008-05-11 10:40:47 +1000
committerPaul Mackerras <paulus@samba.org>2008-05-23 15:27:23 +1000
commit2ca7633dc73405ee775a2e9b7961b47a38bc882d (patch)
tree2a4e5340e7c3020421b1dafeb4fd1955798b0a42 /include/asm-powerpc
parent21451155d8858773ee764e9218de2ca0f4d6fc38 (diff)
[POWERPC] Tweak VDSO linker script to avoid upsetting old binutils
This works around bugs in older binutils' objcopy. The placement of these sections does not really matter, but it confused the buggy old BFD libraries. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/ppc_asm.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-powerpc/ppc_asm.h b/include/asm-powerpc/ppc_asm.h
index 2dbd4e7884f..ef96bfd4ef4 100644
--- a/include/asm-powerpc/ppc_asm.h
+++ b/include/asm-powerpc/ppc_asm.h
@@ -356,6 +356,12 @@ END_FTR_SECTION_IFCLR(CPU_FTR_601)
#define toreal(rd)
#define fromreal(rd)
+/*
+ * We use addis to ensure compatibility with the "classic" ppc versions of
+ * these macros, which use rs = 0 to get the tophys offset in rd, rather than
+ * converting the address in r0, and so this version has to do that too
+ * (i.e. set register rd to 0 when rs == 0).
+ */
#define tophys(rd,rs) \
addis rd,rs,0