https://sourceware.org/bugzilla/show_bug.cgi?id=16548
Bug ID: 16548
Summary: Ld does not handle arbitrary .plt/.got displacements
Product: binutils
Version: 2.25 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: y.gribov at samsung dot com
Currently BFD linker generates 3-word wide .plt entries for ARM targets:
0000825c <.plt>:
...
8270: e28fc600 add ip, pc, #0, 12
8274: e28cca08 add ip, ip, #8, 20 ; 0x8000
8278: e5bcf3e8 ldr pc, [ip, #1000]! ; 0x3e8
827c: e28fc600 add ip, pc, #0, 12
8280: e28cca08 add ip, ip, #8, 20 ; 0x8000
8284: e5bcf3e0 ldr pc, [ip, #992]! ; 0x3e0
These entries are only able to initialize first 28 bits of .plt/.got
displacement. If .text and .rodata are bigger than 2 ^ 28 bytes (i.e. 256M)
this may cause linker errors due to assert in elf32_arm_populate_plt_entry (in
bfd/elf32-arm.c):
BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
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