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9 Commits

Author SHA1 Message Date
Fangrui Song 4b5dbc7a3b [ELF][test] Improve aarch64 tests 2021-02-06 11:50:57 -08:00
Fangrui Song f66b767abe [ELF][AArch64] Allow PT_LOAD to have overlapping p_offset ranges 
Ported the D64906 technique to AArch64. It deletes 3 alignments at
PT_LOAD boundaries for the default case: the size of an aarch64 binary
decreases by at most 192kb.

If `sh_addralign(.tdata) < sh_addralign(.tbss)`,
we can potentially make `p_vaddr(PT_TLS)%p_align(PT_TLS) != 0`.

ld.so that are known to have problems if p_vaddr%p_align!=0:

* musl<=1.1.22
* FreeBSD 13.0-CURRENT (and before) rtld-elf arm64

New test aarch64-tls-vaddr-align.s checks that our workaround makes p_vaddr%p_align = 0.

Reviewed By: ruiu

Differential Revision: https://reviews.llvm.org/D64930

llvm-svn: 369344
 2019-08-20 08:34:56 +00:00
Dimitry Andric c9de3b4d26 Align AArch64 and i386 image base to superpage 
Summary:

As for x86_64, the default image base for AArch64 and i386 should be
aligned to a superpage appropriate for the architecture.

On AArch64, this is 2 MiB, on i386 it is 4 MiB.

Reviewers: emaste, grimar, javed.absar, espindola, ruiu, peter.smith, srhines, rprichard

Reviewed By: ruiu, peter.smith

Subscribers: jfb, markj, arichardson, krytarowski, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D50297

llvm-svn: 342746
 2018-09-21 16:58:13 +00:00
Fangrui Song b6772b86e2 [ELF] Move `// REQUIRES:` line to the top 
llvm-svn: 335676
 2018-06-26 22:20:04 +00:00
Eugene Leviant ee8dcfbdf7 [ELF] Set max page size to 64K for AArch64 
Differential revision: https://reviews.llvm.org/D25079

llvm-svn: 283200
 2016-10-04 08:58:55 +00:00
Igor Kudrin cfe47f5b32 [ELF/AArch64] Allow only valid dynamic relocations in the output. 
All relocations, which cannot be handled by the dynamic linker,
cause a linking error "rebuild with -fPIC".

Differential revision: http://reviews.llvm.org/D15193

llvm-svn: 254840
 2015-12-05 06:20:24 +00:00
Igor Kudrin fea8ed50ef [ELF/AArch64] Fix overflow checks for R_AARCH64_{ABS,PREL}{16,32} relocations. 
ABI specifies the allowed range for these relocations as 2^(n-1) <= X < 2^n.

The patch fixes checks and introduces precise tests for these relocations.

Differential revision: http://reviews.llvm.org/D14957

llvm-svn: 254146
 2015-11-26 10:05:24 +00:00
Rafael Espindola 9c8904fb38 Rename ld.lld2 to ld.lld since it is the default. 
llvm-svn: 253437
 2015-11-18 06:11:01 +00:00
Rafael Espindola 4b1285c55a Rename test/elf2 to test/ELF. 
llvm-svn: 253313
 2015-11-17 05:36:42 +00:00