[Bug ld/25665] New: aarch64 veneers not inserted with large .text object between caller and target

[rrorden at ptc dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25665

            Bug ID: 25665
           Summary: aarch64 veneers not inserted with large .text object
                    between caller and target
           Product: binutils
           Version: 2.33
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: rrorden at ptc dot com
  Target Milestone: ---

Similar to https://sourceware.org/bugzilla/show_bug.cgi?id=18668, a "relocation
truncated to fit: R_AARCH64_CALL26" error occurs with this test case:

Using gcc 9.2.0, ld 2.33.1 for aarch64-unknown-linux-gnu

$ cat main.c
void  foo ();
int main () {foo();}

$ cat large-text.s
        .text
        .zero  134217728

$ cat foo.c
void foo(void){}

$ gcc -c -o main.o main.c
$ as -o large-text.o large-text.s
$ gcc -c -o foo.o foo.c

$ gcc -o main main.o large-text.o foo.o
main.o: in function `main':
main.c:(.text+0x8): relocation truncated to fit: R_AARCH64_CALL26 against
symbol `foo' defined in .text section in foo.o
collect2: error: ld returned 1 exit status

It links (no veneers needed) if you move large-text.o to the front or end of
the list, of course. 

The same files compile and link fine (with veneers generated) on
arm-linux-gnueabihf (32-bit) using gcc 8.3.0 and ld 2.31.1.

I get "relocation truncated to fit" errors with gcc 5.1.1 and 6.4.1
aarch64-linux-gnu crosstools as well. 

I have a project that has to link many objects, including one with .text size >
128MB.

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