| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283 |
- .globl _start
- .type _start,@function
- .text
- _start:
- .cfi_startproc
- 0:
- addis 2,12,(.TOC.-0b)@ha
- addi 2,2,(.TOC.-0b)@l
- .localentry _start,.-0b
- mflr 0
- std 0,16(1)
- stdu 1,-32(1)
- .cfi_def_cfa_offset 32
- .cfi_offset 65, 16
- .macro call f
- bl \f
- nop
- .endm
- # 3000 plt calls, giving over 64k in .plt size. With a small .got
- # this guarantees some plt call stubs can use a 16-bit signed offset
- # from .TOC. while others need a 32-bit signed offset (and are larger).
- .irpc t4,012
- .irpc t3,0123456789
- .irpc t2,0123456789
- .irpc t1,0123456789
- .if \t4
- call f\t4\t3\t2\t1
- .elseif \t3
- call f\t3\t2\t1
- .elseif \t2
- call f\t2\t1
- .else
- call f\t1
- .endif
- .endr
- .endr
- .endr
- .endr
- addi 1,1,32
- .cfi_def_cfa_offset 0
- ld 0,16(1)
- mtlr 0
- .cfi_restore 65
- blr
- .cfi_endproc
- .size _start,.-_start
- # Padding to trigger a stub sizing error with commit 2f83249c13 and
- # c804c6f98d (relro changes). This particular testcase gives a decrease
- # in .got to .plt gap after .eh_frame editing, resulting in some plt
- # call stubs being smaller. If the very last one is smaller the size
- # error triggers. Arguably, the ppc64 backend should not report an
- # error for shrinkage. However, the actual PR object files showed an
- # *increase* in .got to .plt gap after .eh_frame editing, resulting in
- # some plt call stubs being larger. That hit an assertion failure
- # when a long branch stub followed the larger plt call stub and
- # overwrote the end of the plt call stub.
- # With enough fiddling of this testcase it likely would be possible to
- # find the right padding here and .eh_frame sizing to trigger an
- # increase in .got to .plt gap. The point of this testcase is to show
- # that the .got to .plt gap should not change after sizing.
- .space 50000
- # Generate some .eh_frame info that -gc-sections will trim
- .macro fundef f
- .section .text.\f,"ax",@progbits
- .type \f,@function
- \f:
- .cfi_startproc
- blr
- .cfi_endproc
- .size \f,.-\f
- .endm
- .irpc t2,0123456789
- .irpc t1,0123456789
- fundef dummy\t2\t1
- .endr
- .endr
|
