Craig Topper 0cbe713c69 [X86] Automatically harden inline assembly RET instructions against Load Value Injection (LVI) ...

Previously, the X86AsmParser would issue a warning whenever a ret instruction is encountered. This patch changes the behavior to automatically transform each ret instruction in an inline assembly stream into:

shlq $0, (%rsp)
lfence
ret

which is secure, according to https://software.intel.com/security-software-guidance/insights/deep-dive-load-value-injection#specialinstructions.

Patch by Scott Constable with some minor changes by Craig Topper.

2020-06-13 15:16:05 -07:00

..

CMakeLists.txt

[cmake] Explicitly mark libraries defined in lib/ as "Component Libraries"

2019-11-21 10:48:08 -08:00

LLVMBuild.txt

[X86] Move InstPrinter files to MCTargetDesc. NFC

2019-05-10 23:24:38 +00:00

X86AsmParser.cpp

[X86] Automatically harden inline assembly RET instructions against Load Value Injection (LVI)

2020-06-13 15:16:05 -07:00

X86AsmParserCommon.h

[X86] Limit vpermil2pd/vpermil2ps immediates to 4 bits in the assembly parser.

2019-08-07 05:34:27 +00:00

X86Operand.h

[X86][llvm-mc] Make the suffix matcher more accurate.

2020-05-27 14:45:17 +08:00