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| author | Mark Shinwell <shinwell@codesourcery.com> | 2007-05-15 09:54:09 +0000 |
|---|---|---|
| committer | Mark Shinwell <shinwell@codesourcery.com> | 2007-05-15 09:54:09 +0000 |
| commit | a00a1f35e162a3eb8294f994c36fce1b470e106c (patch) | |
| tree | 36e96d5bf7bd015c128c3ce7cc4a5c3fe7bfd331 /bfd/elf32-arm.c | |
| parent | 1c3f20b4d1bae5fb56f265da94b18101f7dab390 (diff) | |
| download | gdb-a00a1f35e162a3eb8294f994c36fce1b470e106c.zip gdb-a00a1f35e162a3eb8294f994c36fce1b470e106c.tar.gz gdb-a00a1f35e162a3eb8294f994c36fce1b470e106c.tar.bz2 | |
bfd/
* elf32-arm.c (elf32_arm_final_link_relocate): Correctly
handle the Thumb-2 JUMP19 relocation.
ld/testsuite/
* ld-arm/arm-elf.exp: Add jump19 testcase.
* ld-arm/jump19.d: New.
* ld-arm/jump19.s: New.
Diffstat (limited to 'bfd/elf32-arm.c')
| -rw-r--r-- | bfd/elf32-arm.c | 26 |
1 files changed, 8 insertions, 18 deletions
diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c index 1eb0cf6..7ad4a4a 100644 --- a/bfd/elf32-arm.c +++ b/bfd/elf32-arm.c @@ -5213,9 +5213,8 @@ elf32_arm_final_link_relocate (reloc_howto_type * howto, bfd_boolean overflow = FALSE; bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); - bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; - bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; - bfd_vma check; + bfd_signed_vma reloc_signed_max = 0xffffe; + bfd_signed_vma reloc_signed_min = -0x100000; bfd_signed_vma signed_check; /* Need to refetch the addend, reconstruct the top three bits, @@ -5223,14 +5222,14 @@ elf32_arm_final_link_relocate (reloc_howto_type * howto, if (globals->use_rel) { bfd_vma S = (upper_insn & 0x0400) >> 10; - bfd_vma upper = (upper_insn & 0x001f); + bfd_vma upper = (upper_insn & 0x003f); bfd_vma J1 = (lower_insn & 0x2000) >> 13; bfd_vma J2 = (lower_insn & 0x0800) >> 11; bfd_vma lower = (lower_insn & 0x07ff); - upper |= J2 << 6; - upper |= J1 << 7; - upper |= ~S << 8; + upper |= J1 << 6; + upper |= J2 << 7; + upper |= (!S) << 8; upper -= 0x0100; /* Sign extend. */ addend = (upper << 12) | (lower << 1); @@ -5244,17 +5243,8 @@ elf32_arm_final_link_relocate (reloc_howto_type * howto, relocation -= (input_section->output_section->vma + input_section->output_offset + rel->r_offset); + signed_check = (bfd_signed_vma) relocation; - check = relocation >> howto->rightshift; - - /* If this is a signed value, the rightshift just dropped - leading 1 bits (assuming twos complement). */ - if ((bfd_signed_vma) relocation >= 0) - signed_check = check; - else - signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); - - /* Assumes two's complement. */ if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) overflow = TRUE; @@ -5266,7 +5256,7 @@ elf32_arm_final_link_relocate (reloc_howto_type * howto, bfd_vma hi = (relocation & 0x0003f000) >> 12; bfd_vma lo = (relocation & 0x00000ffe) >> 1; - upper_insn = (upper_insn & 0xfb30) | (S << 10) | hi; + upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi; lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; } |