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| author | H.J. Lu <hjl.tools@gmail.com> | 2022-02-07 15:22:19 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2022-02-07 16:04:10 -0800 |
| commit | 30a954525f4e53a9cd50a1a8a6f201c7cf6595c7 (patch) | |
| tree | f801035fdda0bbcbb2cf4037a1faa7e655848a8f | |
| parent | a194bde6705579ac3e767db48e0966a7f6144431 (diff) | |
| download | binutils-30a954525f4e53a9cd50a1a8a6f201c7cf6595c7.zip binutils-30a954525f4e53a9cd50a1a8a6f201c7cf6595c7.tar.gz binutils-30a954525f4e53a9cd50a1a8a6f201c7cf6595c7.tar.bz2 | |
i386: Allow GOT32 relocations against ABS symbols
GOT32 relocations are allowed since absolute value + addend is stored in
the GOT slot.
Tested on glibc 2.35 build with GCC 11.2 and -Os.
bfd/
PR ld/28870
* elfxx-x86.c (_bfd_elf_x86_valid_reloc_p): Also allow GOT32
relocations.
ld/
PR ld/28870
* testsuite/ld-i386/i386.exp: Run pr28870.
* testsuite/ld-i386/pr28870.d: New file.
* testsuite/ld-i386/pr28870.s: Likewise.
| -rw-r--r-- | bfd/elfxx-x86.c | 10 | ||||
| -rw-r--r-- | ld/testsuite/ld-i386/i386.exp | 1 | ||||
| -rw-r--r-- | ld/testsuite/ld-i386/pr28870.d | 10 | ||||
| -rw-r--r-- | ld/testsuite/ld-i386/pr28870.s | 6 |
4 files changed, 23 insertions, 4 deletions
diff --git a/bfd/elfxx-x86.c b/bfd/elfxx-x86.c index 7ac2411..d00dc45 100644 --- a/bfd/elfxx-x86.c +++ b/bfd/elfxx-x86.c @@ -1942,9 +1942,9 @@ _bfd_elf_x86_valid_reloc_p (asection *input_section, irel = *rel; /* Only allow relocations against absolute symbol, which can be - resolved as absolute value + addend. GOTPCREL relocations - are allowed since absolute value + addend is stored in the - GOT slot. */ + resolved as absolute value + addend. GOTPCREL and GOT32 + relocations are allowed since absolute value + addend is + stored in the GOT slot. */ if (bed->target_id == X86_64_ELF_DATA) { r_type &= ~R_X86_64_converted_reloc_bit; @@ -1965,7 +1965,9 @@ _bfd_elf_x86_valid_reloc_p (asection *input_section, else valid_p = (r_type == R_386_32 || r_type == R_386_16 - || r_type == R_386_8); + || r_type == R_386_8 + || r_type == R_386_GOT32 + || r_type == R_386_GOT32X); if (valid_p) *no_dynreloc_p = true; diff --git a/ld/testsuite/ld-i386/i386.exp b/ld/testsuite/ld-i386/i386.exp index fe36b0f..82e14ab 100644 --- a/ld/testsuite/ld-i386/i386.exp +++ b/ld/testsuite/ld-i386/i386.exp @@ -509,6 +509,7 @@ run_dump_test "pr27491-3" run_dump_test "pr27491-4" run_dump_test "dt-relr-1a" run_dump_test "dt-relr-1b" +run_dump_test "pr28870" if { !([istarget "i?86-*-linux*"] || [istarget "i?86-*-gnu*"] diff --git a/ld/testsuite/ld-i386/pr28870.d b/ld/testsuite/ld-i386/pr28870.d new file mode 100644 index 0000000..8e9b9fb --- /dev/null +++ b/ld/testsuite/ld-i386/pr28870.d @@ -0,0 +1,10 @@ +#as: --32 +#ld: --no-dynamic-linker -m elf_i386 -pie +#readelf: -s --wide + +#... +Symbol table '.symtab' contains [0-9]+ entries: + Num: Value Size Type Bind Vis Ndx Name +#... + +[a-f0-9]+: 00000002 0 NOTYPE LOCAL DEFAULT ABS foo +#pass diff --git a/ld/testsuite/ld-i386/pr28870.s b/ld/testsuite/ld-i386/pr28870.s new file mode 100644 index 0000000..8e32047 --- /dev/null +++ b/ld/testsuite/ld-i386/pr28870.s @@ -0,0 +1,6 @@ + .text + .globl _start +_start: + addl foo@GOT(%ebx), %eax + cmpl $0, foo@GOT(%ebx) +foo = 2 |