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* reloc.c (bfd_check_overflow): Add casts before shifts which may

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not fit in 32 bits.
	(_bfd_relocate_contents): Likewise.
This commit is contained in:
Ian Lance Taylor
1998-05-19 22:45:38 +00:00
parent 200b86ea4f
commit 71842815b0
2 changed files with 28 additions and 7 deletions
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8
bfd/ChangeLog
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@ -1,3 +1,11 @@
Tue May 19 18:41:19 1998 Ian Lance Taylor <ian@cygnus.com>
* bfd-in.h: Move over patch to bfd-in2.h.
* reloc.c (bfd_check_overflow): Add casts before shifts which may
not fit in 32 bits.
(_bfd_relocate_contents): Likewise.
Mon May 18 14:44:15 1998 Nick Clifton <nickc@cygnus.com> Mon May 18 14:44:15 1998 Nick Clifton <nickc@cygnus.com>
* peicode.h (add_data_entry): If the section has no private data * peicode.h (add_data_entry): If the section has no private data

27
bfd/reloc.c
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@ -1,5 +1,5 @@
/* BFD support for handling relocation entries. /* BFD support for handling relocation entries.
Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 1997, 1998 Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 1998
Free Software Foundation, Inc. Free Software Foundation, Inc.
Written by Cygnus Support. Written by Cygnus Support.
@ -411,14 +411,14 @@ FUNCTION
bfd_get_reloc_size bfd_get_reloc_size
SYNOPSIS SYNOPSIS
int bfd_get_reloc_size (reloc_howto_type *); unsigned int bfd_get_reloc_size (reloc_howto_type *);
DESCRIPTION DESCRIPTION
For a reloc_howto_type that operates on a fixed number of bytes, For a reloc_howto_type that operates on a fixed number of bytes,
this returns the number of bytes operated on. this returns the number of bytes operated on.
*/ */
int unsigned int
bfd_get_reloc_size (howto) bfd_get_reloc_size (howto)
reloc_howto_type *howto; reloc_howto_type *howto;
{ {
@ -492,7 +492,8 @@ bfd_check_overflow (how, bitsize, rightshift, relocation)
case complain_overflow_signed: case complain_overflow_signed:
{ {
/* Assumes two's complement. */ /* Assumes two's complement. */
bfd_signed_vma reloc_signed_max = (1 << (bitsize - 1)) - 1; bfd_signed_vma reloc_signed_max =
((bfd_signed_vma) 1 << (bitsize - 1)) - 1;
bfd_signed_vma reloc_signed_min = ~reloc_signed_max; bfd_signed_vma reloc_signed_min = ~reloc_signed_max;
/* The above right shift is incorrect for a signed value. /* The above right shift is incorrect for a signed value.
@ -513,7 +514,8 @@ bfd_check_overflow (how, bitsize, rightshift, relocation)
/* Assumes two's complement. This expression avoids /* Assumes two's complement. This expression avoids
overflow if `bitsize' is the number of bits in overflow if `bitsize' is the number of bits in
bfd_vma. */ bfd_vma. */
bfd_vma reloc_unsigned_max = (((1 << (bitsize - 1)) - 1) << 1) | 1; bfd_vma reloc_unsigned_max =
((((bfd_vma) 1 << (bitsize - 1)) - 1) << 1) | 1;
if ((bfd_vma) check > reloc_unsigned_max) if ((bfd_vma) check > reloc_unsigned_max)
flag = bfd_reloc_overflow; flag = bfd_reloc_overflow;
@ -1523,7 +1525,8 @@ _bfd_relocate_contents (howto, input_bfd, relocation, location)
case complain_overflow_signed: case complain_overflow_signed:
{ {
/* Assumes two's complement. */ /* Assumes two's complement. */
bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; bfd_signed_vma reloc_signed_max =
((bfd_signed_vma) 1 << (howto->bitsize - 1)) - 1;
bfd_signed_vma reloc_signed_min = ~reloc_signed_max; bfd_signed_vma reloc_signed_min = ~reloc_signed_max;
if (signed_check > reloc_signed_max if (signed_check > reloc_signed_max
@ -1537,7 +1540,7 @@ _bfd_relocate_contents (howto, input_bfd, relocation, location)
overflow if howto->bitsize is the number of bits in overflow if howto->bitsize is the number of bits in
bfd_vma. */ bfd_vma. */
bfd_vma reloc_unsigned_max = bfd_vma reloc_unsigned_max =
(((1 << (howto->bitsize - 1)) - 1) << 1) | 1; ((((bfd_vma) 1 << (howto->bitsize - 1)) - 1) << 1) | 1;
if (check > reloc_unsigned_max) if (check > reloc_unsigned_max)
overflow = true; overflow = true;
@ -2007,6 +2010,12 @@ ENUMX
BFD_RELOC_MIPS_CALL_HI16 BFD_RELOC_MIPS_CALL_HI16
ENUMX ENUMX
BFD_RELOC_MIPS_CALL_LO16 BFD_RELOC_MIPS_CALL_LO16
COMMENT
{* start-sanitize-r5900 *}
ENUMX
BFD_RELOC_MIPS15_S3
COMMENT
{* end-sanitize-r5900 *}
ENUMDOC ENUMDOC
MIPS ELF relocations. MIPS ELF relocations.
@ -2018,6 +2027,10 @@ ENUMDOC
MIPS DVP Relocations. MIPS DVP Relocations.
This is an 11-bit pc relative reloc. The recorded address is for the This is an 11-bit pc relative reloc. The recorded address is for the
lower instruction word, and the value is in 128 bit units. lower instruction word, and the value is in 128 bit units.
ENUM
BFD_RELOC_MIPS_DVP_27_S4
ENUMDOC
This is a 27 bit address left shifted by 4.
COMMENT COMMENT
{* end-sanitize-sky *} {* end-sanitize-sky *}