[Bug gold/27039] New: Gold doesn't support SHF_GNU_RETAIN

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27039

            Bug ID: 27039
           Summary: Gold doesn't support SHF_GNU_RETAIN
           Product: binutils
           Version: 2.36 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gold
          Assignee: ccoutant at gmail dot com
          Reporter: hjl.tools at gmail dot com
                CC: ian at airs dot com
  Target Milestone: ---

[hjl@gnu-cfl-2 gold-1]$ cat x.s 
        .global discard0
        .section        .bss.discard0,"aw"
        .type   discard0, %object
discard0:
        .zero   2

        .global discard1
        .section        .bss.discard1,"aw"
        .type   discard1, %object
discard1:
        .zero   2

        .global discard2
        .section        .data.discard2,"aw"
        .type   discard2, %object
discard2:
        .word   1

        .section        .bss.sdiscard0,"aw"
        .type   sdiscard0, %object
sdiscard0:
        .zero   2

        .section        .bss.sdiscard1,"aw"
        .type   sdiscard1, %object
sdiscard1:
        .zero   2

        .section        .data.sdiscard2,"aw"
        .type   sdiscard2, %object
sdiscard2:
        .word   1

        .section        .text.fndiscard0,"ax"
        .global fndiscard0
        .type   fndiscard0, %function
fndiscard0:
        .word 0

        .global retain0
        .section        .bss.retain0,"awR"
        .type   retain0, %object
retain0:
        .zero   2

        .global retain1
        .section        .bss.retain1,"awR"
        .type   retain1, %object
retain1:
        .zero   2

        .global retain2
        .section        .data.retain2,"awR"
        .type   retain2, %object
retain2:
        .word   1

        .section        .bss.sretain0,"awR"
        .type   sretain0, %object
sretain0:
        .zero   2

        .section        .bss.sretain1,"awR"
        .type   sretain1, %object
sretain1:
        .zero   2

        .section        .data.sretain2,"aRw"
        .type   sretain2, %object
sretain2:
        .word   1

        .section        .text.fnretain1,"Rax"
        .global fnretain1
        .type   fnretain1, %function
fnretain1:
        .word   0

        .section        .text.fndiscard2,"ax"
        .global fndiscard2
        .type   fndiscard2, %function
fndiscard2:
        .word   0

        .section        .bss.lsretain0,"awR"
        .type   lsretain0.2, %object
lsretain0.2:
        .zero   2

        .section        .bss.lsretain1,"aRw"
        .type   lsretain1.1, %object
lsretain1.1:
        .zero   2

        .section        .data.lsretain2,"aRw"
        .type   lsretain2.0, %object
lsretain2.0:
        .word   1

        .section        .text._start,"ax"
        .global _start
        .type   _start, %function
_start:
        .word 0
[hjl@gnu-cfl-2 gold-1]$ make x
as   -o x.o x.s
./ld -e _start --gc-sections -o x x.o 
[hjl@gnu-cfl-2 gold-1]$ nm x
0000000000000000 A __bss_start
0000000000000000 A _edata
0000000000000000 A _end
00000000004000d0 T _start
[hjl@gnu-cfl-2 gold-1]$ cat y.s
        .section .preinit_array.01000,"aw",%preinit_array
        .dc.a 0

        .section .init_array.01000,"aw",%init_array
        .dc.a 0

        .section .fini_array.01000,"aw",%fini_array
        .dc.a 0

        .section .preinit_array.01000,"awR",%preinit_array
        .dc.a 0

        .section .init_array.01000,"awR",%init_array
        .dc.a 0

        .section .fini_array.01000,"awR",%fini_array
        .dc.a 0

        .text
        .globl _start
_start:
        .dc.a 0
[hjl@gnu-cfl-2 gold-1]$ make y
as   -o y.o y.s
./ld -pie -e _start --gc-sections -o y y.o 
[hjl@gnu-cfl-2 gold-1]$ readelf -d y

Dynamic section at offset 0xe60 contains 21 entries:
  Tag        Type                         Name/Value
 0x0000000000000015 (DEBUG)              0x0
 0x0000000000000006 (SYMTAB)             0x1f8
 0x000000000000000b (SYMENT)             24 (bytes)
 0x0000000000000005 (STRTAB)             0x210
 0x000000000000000a (STRSZ)              1 (bytes)
 0x000000006ffffef5 (GNU_HASH)           0x218
 0x0000000000000004 (HASH)               0x238
 0x0000000000000020 (PREINIT_ARRAY)      0x1e30
 0x0000000000000021 (PREINIT_ARRAYSZ)    0x8
 0x0000000000000019 (INIT_ARRAY)         0x1e38
 0x000000000000001b (INIT_ARRAYSZ)       8 (bytes)
 0x000000000000001a (FINI_ARRAY)         0x1e40
 0x000000000000001c (FINI_ARRAYSZ)       8 (bytes)
 0x0000000000000020 (PREINIT_ARRAY)      0x1e48
 0x0000000000000021 (PREINIT_ARRAYSZ)    0x8
 0x0000000000000019 (INIT_ARRAY)         0x1e50
 0x000000000000001b (INIT_ARRAYSZ)       8 (bytes)
 0x000000000000001a (FINI_ARRAY)         0x1e58
 0x000000000000001c (FINI_ARRAYSZ)       8 (bytes)
 0x000000006ffffffb (FLAGS_1)            Flags: PIE
 0x0000000000000000 (NULL)               0x0
[hjl@gnu-cfl-2 gold-1]$

-- 
You are receiving this mail because:
You are on the CC list for the bug.