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Jason Lowe-Power 3370059668 x86: Fix implicit stack addressing in 64-bit mode 
When in 64-bit mode, if the stack is accessed implicitly by an instruction,
the alternate address prefix should be ignored if present.

This patch adds an extra flag to the ldstop which signifies when the
address override should be ignored. Then, for all of the affected
instructions, this patch adds two options to the ld and st opcode to
use the current stack addressing mode for all addresses and to ignore the
AddressSizeFlagBit.
Finally, this patch updates the x86 TLB to not truncate the address if it
is in 64-bit mode and the IgnoreAddrSizeFlagBit is set.

This fixes a problem when calling __libc_start_main with a binary that
is linked with a recent version of ld. This version of ld uses the
address override prefix (0x67) on the call instruction instead of a nop.

Note: This has not been tested in compatibility mode and only the call
instruction with the address override prefix has been tested.

See [1] page 9 (pdf page 45)

For instructions that are affected see [1] page 519 (pdf page 555).

[1] http://support.amd.com/TechDocs/24594.pdf

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2017-01-28 13:42:41 +05:30
..
bios style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
insts style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
isa x86: Fix implicit stack addressing in 64-bit mode 2017-01-28 13:42:41 +05:30
linux syscall_emul: [patch 2/22] move SyscallDesc into its own .hh and .cc 2016-11-09 14:27:40 -06:00
regs x86: create function to check miscreg validity 2016-02-06 17:21:20 -08:00
cpuid.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
cpuid.hh scons: Add warning for missing declarations 2013-02-19 05:56:07 -05:00
decoder.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
decoder.hh misc: Remove redundant compiler-specific defines 2015-10-12 04:07:59 -04:00
decoder_tables.cc x86: decode instructions with vex prefix 2015-07-17 11:31:22 -05:00
emulenv.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
emulenv.hh gcc: Clean-up of non-C++0x compliant code, first steps 2012-03-19 06:36:09 -04:00
faults.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
faults.hh x86: Invalidating TLB entry on page fault 2015-11-16 05:08:54 -06:00
interrupts.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
interrupts.hh x86: Add missing explicit overrides for X86 devices 2015-10-23 09:51:12 -04:00
intmessage.hh MEM: Remove the Broadcast destination from the packet 2012-04-14 05:45:55 -04:00
isa.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
isa.hh misc: Remove redundant compiler-specific defines 2015-10-12 04:07:59 -04:00
isa_traits.hh style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
kernel_stats.hh copyright: Change HP copyright on x86 code to be more friendly 2010-05-23 22:44:15 -07:00
ldstflags.hh arch,x86,mem: Dynamically determine the ISA for Ruby store check 2014-10-16 05:49:44 -04:00
locked_mem.hh cpu: Add CPU support for generatig wake up events when LLSC adresses are snooped. 2014-01-24 15:29:30 -06:00
memhelpers.hh cpu, arch: fix the type used for the request flags 2016-08-15 12:00:35 +01:00
microcode_rom.hh includes: sort all includes 2011-04-15 10:44:06 -07:00
mmapped_ipr.hh arch: Add support for m5ops using mmapped IPRs 2013-09-30 12:20:43 +02:00
nativetrace.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
nativetrace.hh Make commenting on close namespace brackets consistent. 2011-01-03 14:35:43 -08:00
pagetable.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
pagetable.hh style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
pagetable_walker.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
pagetable_walker.hh arch, cpu: Do not forward snoops to table walker 2015-05-05 03:22:27 -04:00
process.cc style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
process.hh style: remove trailing whitespace 2016-02-06 17:21:18 -08:00
pseudo_inst.cc style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
pseudo_inst.hh kvm, x86: Adding support for SE mode execution 2014-11-23 18:01:08 -08:00
registers.hh arch: get rid of unused LargestRead typedef 2016-01-17 18:27:46 -08:00
remote_gdb.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
remote_gdb.hh arm: remote GDB: rationalize structure of register offsets 2015-12-18 15:12:07 -06:00
SConscript kvm, x86: Adding support for SE mode execution 2014-11-23 18:01:08 -08:00
SConsopts copyright: This file need not have had the more restrictive copyright. 2009-02-09 20:10:15 -08:00
stacktrace.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
stacktrace.hh arch: Use const StaticInstPtr references where possible 2014-09-27 09:08:36 -04:00
system.cc style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
system.hh style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
tlb.cc style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
tlb.hh style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
types.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
types.hh style: fix missing spaces in control statements 2016-02-06 17:21:19 -08:00
utility.cc style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
utility.hh style: [patch 3/22] reduce include dependencies in some headers 2016-11-09 14:27:40 -06:00
vtophys.cc style: [patch 1/22] use /r/3648/ to reorganize includes 2016-11-09 14:27:37 -06:00
vtophys.hh gcc: Clean-up of non-C++0x compliant code, first steps 2012-03-19 06:36:09 -04:00
x86_traits.hh arch/x86: add support for explicit CC register file 2013-10-15 14:22:44 -04:00
X86ISA.py arch: Make the ISA class inherit from SimObject 2013-01-07 13:05:35 -05:00
X86LocalApic.py sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
X86NativeTrace.py cpu: Put all CPU instruction tracers in a single file 2015-01-25 07:22:17 -05:00
X86System.py sim: Include object header files in SWIG interfaces 2012-11-02 11:32:01 -05:00
X86TLB.py x86: add tlb checkpointing 2013-08-07 14:51:17 -05:00