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* 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.
This commit is contained in:
Mark Shinwell
2007-05-15 09:54:09 +00:00
parent 1c3f20b4d1
commit a00a1f35e1
6 changed files with 46 additions and 18 deletions
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26
bfd/elf32-arm.c
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@@ -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;
}