[PATCH v5] elf: Set image base address to the maximum page size

[H.J. Lu]

On Mon, Jun 29, 2026 at 9:24 AM Alan Modra <amodra@gmail.com> wrote:
>
> On Fri, Jun 26, 2026 at 12:06:50PM +0800, H.J. Lu wrote:
> > Here is the v4 patch.
>
> On x86_64-linux I see FAIL: ld-elf/textaddr8 due to not matching the
> expected header.
>
> Program Headers:
>   Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz   Flg Align
>   LOAD           0x000000 0x0000000000800000 0x0000000000800000 0x0000e8 0x0000e8 R   0x800000
>   LOAD           0x800000 0x0000000001000000 0x0000000001000000 0x000004 0x000004 R E 0x800000
>   LOAD           0x1000000 0x0000000001800000 0x0000000001800000 0x000004 0x000004 RW  0x800000
>
> aarch64-linux-gnu  +FAIL: ld-elf/textaddr8
> alpha-linux-gnu  +FAIL: ld-elf/textaddr8
> am33_2.0-linux-gnu  +FAIL: ld-elf/textaddr8
> armeb-linux-gnueabi  +FAIL: ld-elf/textaddr8
> arm-linux-gnueabi  +FAIL: ld-elf/textaddr8
> cris-linux-gnu  +FAIL: ld-elf/textaddr8
> crisv32-linux-gnu  +FAIL: ld-elf/textaddr8
> csky-linux-gnu  +FAIL: ld-elf/textaddr8
> frv-linux-gnu  +FAIL: ld-elf/textaddr8
> h8300-linux-gnu  +FAIL: ld-elf/textaddr8
> hppa64-linux-gnu  +FAIL: ld-elf/textaddr8
> hppa-linux-gnu  +FAIL: ld-elf/textaddr8
> i586-linux-gnu  +FAIL: ld-elf/textaddr8
> ia64-linux-gnu  +FAIL: ld-elf/textaddr8
> kvx-linux-gnu  +FAIL: ld-elf/textaddr8
> lm32-linux-gnu  +FAIL: ld-elf/textaddr8
> loongarch64-linux-gnu  +FAIL: ld-elf/textaddr8
> m32r-linux-gnu  +FAIL: ld-elf/textaddr8
> m68k-linux-gnu  +FAIL: ld-elf/textaddr8
> metag-linux-gnu  +FAIL: ld-elf/textaddr8
> microblaze-linux-gnu  +FAIL: ld-elf/textaddr8
> microblaze-linux-gnu  +FAIL: ld-elf/textaddr9
> mips64-linux-gnuabi64  +FAIL: ld-elf/textaddr8
> mipsel-linux-gnu  +FAIL: ld-elf/textaddr8
> mipsisa32el-linux-gnu  +FAIL: ld-elf/textaddr8
> mips-linux-gnu  +FAIL: ld-elf/textaddr8
> nds32le-linux-gnu  +FAIL: ld-elf/textaddr8
> nds32le-linux-gnu  +FAIL: ld-elf/textaddr9
> or1k-linux-gnu  +FAIL: ld-elf/textaddr8
> powerpc64le-linux-gnu  +FAIL: ld-elf/textaddr8
> powerpc64-linux-gnu  +FAIL: ld-elf/textaddr8
> powerpc-linux-gnu  +FAIL: ld-elf/textaddr8
> riscv64-linux-gnu  +FAIL: ld-elf/textaddr8
> s390-linux-gnu  +FAIL: ld-elf/textaddr8
> s390x-linux-gnu  +FAIL: ld-elf/textaddr8
> sh4-linux-gnu  +FAIL: ld-elf/textaddr8
> sparc64-linux-gnu  +FAIL: ld-elf/textaddr8
> sparc-linux-gnu  +FAIL: ld-elf/textaddr8
> tilegx-linux-gnu  +FAIL: ld-elf/textaddr8
> tilepro-linux-gnu  +FAIL: ld-elf/textaddr8
> x86_64-pc-linux-gnu  +FAIL: ld-elf/textaddr8
> x86_64-pc-linux-gnux32  +FAIL: ld-elf/textaddr8
>
>

Changes in v5:

1.  Adjust ld-elf/textaddr8 and ld-elf/textaddr9.
2.  Add testsuite/ld-elf/textaddr10.d.

-- 
H.J.
----
When generating Position Dependent Executable for ELF with the maximum
page size set on command-line, set the default image base address to the
maximum page size to avoid segfault if it is lower than the maximum page
size and issue an warning if the image base address set on command-line
is lower than the maximum page size.

PR ld/34184
* ldexp.c (fold_binary): Set the default image base address to
the maximum page size for ELF PDE output if it is lower than
the maximum page size set on command-line and issue an warning
if the image base address set on command-line is lower than the
maximum page size.
* testsuite/ld-elf/elf.exp: Add ld/34184 tests for PDE, PIE
static PDE and static PIE.
* testsuite/ld-elf/pr34184.c: New file.
* testsuite/ld-elf/textaddr3.d: Change -Ttext-segment address
to 0x200100 so that it > the maximum page size.
* testsuite/ld-elf/textaddr5.d: Likewise.
* testsuite/ld-elf/textaddr8.d: New test.
* testsuite/ld-elf/textaddr9.d: Likewise.
* testsuite/ld-elf/textaddr10.d: Likewise.
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