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CSR Bit Fields

RISC-V scontext CSR Register

Address 0x5A8Privilege Supervisor/DebugAccess RW / XLENDebug, trace, and context CSRs

scontext at 0x5A8 is a supervisor-mode context CSR listed under the official Debug/Trace Registers group.

Related Search Terms
scontext CSRscontext 0x5A8supervisor context CSRdebug trace contextRISC-V scontextcontext register
Bit Overview
bit 3 = only bit 3; bits 12..11 = bits 12 down to 11
MSBLSB
VALUE63:0RW
Field Map

Understand scontext By Bit Fields

1 key fields
XLEN-1:0

VALUE

RW

Full register value of scontext; bits not split out here follow the relevant extension or privileged specification, and reserved or WPRI fields should be preserved when writing other fields and ignored on reads.

VALUE (bits XLEN-1:0) — Full register value of scontext; bits not split out here follow the relevant extension or privileged specification, and reserved or WPRI fields should be preserved when writing other fields and ignored on reads.

What This Field Controls

  • - Full register value of scontext; bits not split out here follow the relevant extension or privileged specification, and reserved or WPRI fields should be preserved when writing other fields and ignored on reads.

Common Values

This field is better understood together with surrounding context than as a fixed memorized enumeration.

↗Open Official Manual
Official Basis & Search Notes

scontext is a supervisor read/write context CSR at 0x5A8, listed under Debug/Trace Registers in the official CSR table. It is not an address-translation or memory-protection CSR.

scontext address, lowest access privilege, and access class are checked against the official CSR table: 0x5A8, Supervisor, RW.
The official CSR table lists scontext under Debug/Trace Registers; do not interpret it as a satp-like address-translation register.
Modify only target fields and preserve unchanged bits; interpret WPRI and reserved fields only as the official specification and implementation define them.
RISC-V Privileged Architecture ManualRISC-V Unprivileged ISA Manual

What To Check First When Reading This CSR

  • - First confirm that the current hart implements scontext; unimplemented or insufficiently privileged accesses raise an illegal-instruction exception.
  • - scontext is a supervisor read/write CSR listed under Debug/Trace Registers in the official CSR table; do not treat it as a satp-like address-translation CSR.
  • - Do not assume fixed values for reserved, WARL, or WLRL bits; interpret the value according to the specification and implementation.

Risk Checks Before Writing

  • - Preserve bits that are not being changed so reserved or implementation-defined fields are not written with invalid values.
  • - Prefer CSRRS/CSRRC for local set/clear operations to avoid CSRRW overwriting concurrently updated status bits.

Put It Back Into A Real Flow

1

Read scontext in debug, trace, or context-management flows that need a supervisor context value.

2

Interpret or update the context value according to the implementation and related extension rules while preserving unchanged bits.

3

Validate the result through the relevant debug, trace, or context-aware mechanism.

FAQ

Is scontext an address-translation CSR?

No. The official CSR table lists scontext under Debug/Trace Registers; address translation and protection are handled by CSRs such as satp.

What is easiest to miss when writing scontext?

Do not overwrite it as an ordinary integer. Interpret the context value according to the implementation and related debug/trace mechanism, preserving unchanged or reserved fields.