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PR gold/13617

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* i386.cc (Target_i386::do_code_fill): When using a jmp
	instruction, pad with nop instructions.
	* x86_64.cc (Target_x86_64::do_code_fill): Likewise.
This commit is contained in:
Ian Lance Taylor 2012-01-24 06:21:11 +00:00
parent 42bc6e0f95
commit 9dee3b3c89
3 changed files with 13 additions and 4 deletions
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7
gold/ChangeLog
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@ -1,3 +1,10 @@
2012-01-23 Ian Lance Taylor <ian@airs.com>
PR gold/13617
* i386.cc (Target_i386::do_code_fill): When using a jmp
instruction, pad with nop instructions.
* x86_64.cc (Target_x86_64::do_code_fill): Likewise.
2012-01-22 H.J. Lu <hongjiu.lu@intel.com>
* x86_64.cc (gc_process_relocs): Add typename on types used in

5
gold/i386.cc
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@ -1,6 +1,7 @@
// i386.cc -- i386 target support for gold.
// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012
// Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
@ -3470,7 +3471,7 @@ Target_i386::do_code_fill(section_size_type length) const
jmp[0] = 0xe9;
elfcpp::Swap_unaligned<32, false>::writeval(jmp + 1, length - 5);
return (std::string(reinterpret_cast<char*>(&jmp[0]), 5)
+ std::string(length - 5, '\0'));
+ std::string(length - 5, static_cast<char>(0x90)));
}
// Nop sequences of various lengths.

5
gold/x86_64.cc
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@ -1,6 +1,7 @@
// x86_64.cc -- x86_64 target support for gold.
// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012
// Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
@ -3991,7 +3992,7 @@ Target_x86_64<size>::do_code_fill(section_size_type length) const
jmp[0] = 0xe9;
elfcpp::Swap_unaligned<32, false>::writeval(jmp + 1, length - 5);
return (std::string(reinterpret_cast<char*>(&jmp[0]), 5)
+ std::string(length - 5, '\0'));
+ std::string(length - 5, static_cast<char>(0x90)));
}
// Nop sequences of various lengths.