[Bug gold/28234] New: [AArch64] gold: ADR/ADD relocations on wrong instructions

[fads93 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28234

            Bug ID: 28234
           Summary: [AArch64] gold: ADR/ADD relocations on wrong
                    instructions
           Product: binutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gold
          Assignee: ccoutant at gmail dot com
          Reporter: fads93 at gmail dot com
                CC: ian at airs dot com
  Target Milestone: ---

The application is compiled with `gcc -Wl,-q -fuse_ld=gold -O2 test_2.c -o
test`.
Source:
https://github.com/ijinma/test_for_bolt/blob/master/bolt_error_2/test_2.c

objdump -dr, without -fuse-ld=gold:

0000000000000610 <main>:
 610:   5290d3e2        mov     w2, #0x869f                     // #34463
 614:   a9bd7bfd        stp     x29, x30, [sp, #-48]!
 618:   d284e203        mov     x3, #0x2710                     // #10000
 61c:   72a00022        movk    w2, #0x1, lsl #16
 620:   910003fd        mov     x29, sp
 624:   d503201f        nop
 628:   940000b0        bl      8e8 <foo_b>
                        628: R_AARCH64_CALL26   foo_b
 62c:   b9001bff        str     wzr, [sp, #24]
 630:   b9401be0        ldr     w0, [sp, #24]
 634:   6b02001f        cmp     w0, w2
 638:   5400010c        b.gt    658 <main+0x48>
 63c:   d503201f        nop

With -fuse-ld=gold:

00000000000005e0 <main>:
 5e0:   5290d3e2        mov     w2, #0x869f                     // #34463
 5e4:   a9bd7bfd        stp     x29, x30, [sp, #-48]!
 5e8:   d284e203        mov     x3, #0x2710                     // #10000
 5ec:   72a00022        movk    w2, #0x1, lsl #16
                        5ec: R_AARCH64_ADR_PREL_PG_HI21 __init_array_end
 5f0:   910003fd        mov     x29, sp
                        5f0: R_AARCH64_ADD_ABS_LO12_NC  __init_array_end
 5f4:   d503201f        nop
 5f8:   940000b0        bl      8b8 <foo_b>
                        5f8: R_AARCH64_CALL26   foo_b
                        5f8: R_AARCH64_ADR_PREL_PG_HI21 __init_array_start
 5fc:   b9001bff        str     wzr, [sp, #24]
                        5fc: R_AARCH64_ADD_ABS_LO12_NC  __init_array_start


These relocations are incorrect:
 5ec:   72a00022        movk    w2, #0x1, lsl #16
                        5ec: R_AARCH64_ADR_PREL_PG_HI21 __init_array_end
 5f0:   910003fd        mov     x29, sp
                        5f0: R_AARCH64_ADD_ABS_LO12_NC  __init_array_end

Versions:
Ubuntu 20.04
gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
GNU gold (GNU Binutils for Ubuntu 2.34) 1.16

For more details see https://github.com/facebookincubator/BOLT/issues/157.

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