From f1e2879ecfc8897df0e25a53e81d1868363c5e08 Mon Sep 17 00:00:00 2001 From: Iain Sandoe Date: Wed, 2 Sep 2020 20:33:00 +0100 Subject: [PATCH] Darwin : Make trampoline templates linker-visible. For aarch64, the alignment of the LTRAMPn symbols matters. Actually, the LTRAMPn symbols _are_ 8 byte aligned, but because they are Local, the linker doesn't know that this guarantee can be met. It assumes that they are not necessarily more aligned than the containing section (ld64 atoms strike again). The fix is to publish the trampoline symbol for the linker to access directly - it can then see that the atom is suitably aligned. Fixes issue #11 on the development branch. Signed-off-by: Iain Sandoe gcc/ChangeLog: * config/darwin.h (ASM_GENERATE_INTERNAL_LABEL): Add LTRAMP to the list of symbol prefixes that must be made linker- visible. --- gcc/config/darwin.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/gcc/config/darwin.h b/gcc/config/darwin.h index 27cb3e4..e54cbb1 100644 --- a/gcc/config/darwin.h +++ b/gcc/config/darwin.h @@ -921,6 +921,8 @@ extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS]; sprintf (LABEL, "*%s%ld", "lubsan_type", (long)(NUM));\ else if (strcmp ("LASAN", PREFIX) == 0) \ sprintf (LABEL, "*%s%ld", "lASAN", (long)(NUM));\ + else if (strcmp ("LTRAMP", PREFIX) == 0) \ + sprintf (LABEL, "*%s%ld", "lTRAMP", (long)(NUM));\ else \ sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM)); \ } while (0) -- 2.7.4