riscv / riscv-cfi

This repo holds the work area and revisions of the RISC-V CFI (Shadow Stack and Landing Pads) specifications. CFI defines the privileged and unprivileged ISA extensions that can be used by privileged and unprivileged programs to protect the integrity of their control-flow.

https://jira.riscv.org/browse/RVG-80

riscv/riscv-cfi Issues

Reset dcsr.PELP to NO_LP_EXPECTED upon resuming from debug mode?
Closed 5 months ago2
Does Zicfiss require Zcmop and thus Zca to be implemented?
Closed 5 months ago5
Shadow stack memory protection in bare mode
Closed 6 months ago11
Rationale behind "use of Zicfiss in U-mode requires S-mode to be implemented. Use of Zicfiss in M-mode is not supported."
Closed 6 months ago2
SSAMOSWAP in chapter 2.2
Closed 6 months ago6
Missing store/AMO access-fault in Listing 1~5 at Chapter 2 (Shadow Stack)
Closed 6 months ago2
Ebreak at landing point
Closed 6 months ago2
Linker relaxation
Updated 6 months ago15
Additional AR feedback
Closed 6 months ago2
Contributors
Closed 6 months ago2
Exception caused when SS instructions access non-SS pages
Closed 7 months ago3
SSAMOSWAP use same encoding as AMOCAS.
Closed 7 months ago2
Typo for Zcmop instruction
Closed 7 months ago2
ARC feedback on M-mode SS PMP region
Closed 7 months ago2
Implicit memory references to shadow stack pages should cause traps
Closed 7 months ago6
Zicfiss instruction encoding updates
Closed 8 months ago4
Draft for (complex) hash labeling scheme
Updated 8 months ago15
PLT stubs with landing pad
Updated 8 months ago18
Issue to track latest AR feedback
Closed 8 months ago13
Zimop/Zcmop - temporary non-official documentation
Closed 8 months ago6
Lack of consideration for jmp_buf ABI
Closed 9 months ago10
Inconcistency in Shadow stack enable definition ? (and wavedrom typo)
Closed 9 months ago1
Excessive code space usage by LPAD instruction
Closed 9 months ago4
Behavior of sspush/sspopchk/ssload with illegal operand is not explicitly defined
Closed 9 months ago1
Long semantically direct jumps
Closed 10 months ago12
Do coroutines need special handling?
Closed 9 months ago3
Make `longjmp` returns by indirect jump expected landing pad.
Closed 9 months ago2
Proposal: Interactions with compressed instructions / extensions
Closed 10 months ago3
Misleading caption?: "`lpad` operation"
Closed 10 months ago3
Landing pad encoding update
Closed a year ago16
Does the pseudo-instruction CALL require LPAD?
Closed a year ago6
Only JALR can return, and JAL doesn't have rs1
Closed a year ago1
Landing pad instructions updates
Closed a year ago3
Unwinding
Closed a year ago2
Missing fields from CSR images
Closed a year ago4
Change extension name to Zicfisslp
Closed a year ago1
sspop vs. ssload+sspinc
Closed a year ago2
Jalr as indirect jump/call question
Closed a year ago9
CSR lpl accessibility for U-mode
Closed a year ago2
Prerequisites and dependencies
Closed a year ago7
Introduce compressed shadow stack instructions
Closed a year ago1
Landing pad multi-labeling
Closed a year ago4
Nitpick: comments in sspop and sspopchk examples (Section 3.2)
Closed a year ago3
setjmp/longjmp example (at end of section 3.2)
Closed a year ago3
stack diagram would be useful
Closed a year ago2
sspmp description
Closed a year ago1
Store to load forwarding
Closed a year ago5
Editorial; "itself" clarity
Closed a year ago1
Editorial; "only" placement
Closed a year ago1
Editorial; "allowing preserving" incorrect
Closed a year ago1