From: Iain Sandoe Date: Wed, 2 Sep 2020 19:33:00 +0000 (+0100) Subject: Darwin : Make trampoline templates linker-visible. X-Git-Tag: basepoints/gcc-13~3356 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f1e2879ecfc8897df0e25a53e81d1868363c5e08;p=thirdparty%2Fgcc.git 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. --- diff --git a/gcc/config/darwin.h b/gcc/config/darwin.h index 27cb3e4bb304..e54cbb11cee6 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)