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From: Iain D Sandoe <iains@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-3005] libiberty, Darwin : Fix simple-object LTO table for cross-endian case. Date: Wed, 18 Aug 2021 18:34:52 +0000 (GMT) [thread overview] Message-ID: <20210818183452.955143854812@sourceware.org> (raw) https://gcc.gnu.org/g:220c410162ebece4fffa2912ed79e348d3731d77 commit r12-3005-g220c410162ebece4fffa2912ed79e348d3731d77 Author: Iain Sandoe <iain@sandoe.co.uk> Date: Fri Apr 9 13:40:11 2021 +0100 libiberty, Darwin : Fix simple-object LTO table for cross-endian case. We encapsulate streamed IR in three special sections with a table that describes their entries. The table is expected to be written with native endianness for the target, but for cross-endian cross- compilation the swapping was omitted. Fixed thus. Signed-off-by: Iain Sandoe <iain@sandoe.co.uk> libiberty/ChangeLog: * simple-object-mach-o.c (simple_object_mach_o_write_segment): Arrange to swap the LTO index tables where needed. Diff: --- libiberty/simple-object-mach-o.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libiberty/simple-object-mach-o.c b/libiberty/simple-object-mach-o.c index aa5e0952faf..72b69d19c21 100644 --- a/libiberty/simple-object-mach-o.c +++ b/libiberty/simple-object-mach-o.c @@ -1225,6 +1225,11 @@ simple_object_mach_o_write_segment (simple_object_write *sobj, int descriptor, index[4 * i] -= index[0]; index[0] = 0; + /* Swap the indices, if required. */ + + for (i = 0; i < (nsects_in * 4); ++i) + set_32 (&index[i], index[i]); + sechdr_offset += sechdrsize; /* Write out the section names.
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