Commit Graph

2 Commits

Author SHA1 Message Date
Saleem Abdulrasool 9f0a21efbb tools: support decoding ARM EHABI opcodes in readobj
Add support to llvm-readobj to decode the actual opcodes.  The ARM EHABI opcodes
are a variable length instruction set that describe the operations required for
properly unwinding stack frames.

The primary motivation for this change is to ease the creation of tests for the
ARM EHABI object emission as well as the unwinding directive handling in the ARM
IAS.

Thanks to Logan Chien for an extra test case!

llvm-svn: 199708
2014-01-21 02:33:15 +00:00
Saleem Abdulrasool d9f086036a ARM IAS: add support for .unwind_raw directive
This implements the unwind_raw directive for the ARM IAS.  The unwind_raw
directive takes the form of a stack offset value followed by one or more bytes
representing the opcodes to be emitted.  The opcode emitted will interpreted as
if it were assembled by the opcode assembler via the standard unwinding
directives.

Thanks to Logan Chien for an extra test!

llvm-svn: 199707
2014-01-21 02:33:10 +00:00