vsie

Virtual Supervisor Interrupt Enable

The vsie register is a VSXLEN-bit read/write register that is VS-mode’s version of supervisor CSR sie. When V=1, vsie substitutes for the usual sie, so instructions that normally read or modify sie actually access vsie instead. However, interrupts directed to HS-level continue to be indicated in the HS-level sip register, not in vsip, when V=1.

When bit 13 of hideleg is zero, vsie.LCOFIE is read-only zero. Else, vsie.LCOFIE is an alias of sie.LCOFIE. When bit 10 of hideleg is zero, vsie.SEIE is read-only zero. Else, vsie.SEIE is an alias of hie.VSEIE. When bit 6 of hideleg is zero, vsie.STIE is read-only zero. Else, vsie.STIE is an alias of hie.VSTIE. When bit 2 of hideleg is zero, vsie.SSIE is read-only zero. Else, vsie.SSIE is an alias of hie.VSSIE.

Attributes

CSR Address	0x204
Virtual CSR Address	0x104
Defining extension	H
Length	64-bit
Privilege Mode	VS

CSR Address

0x204

Virtual CSR Address

0x104

Defining extension

Length

64-bit

Privilege Mode

Format

Figure 1. vsie format

Field Summary

Name Location Type Reset Value

Name	Location	Type	Reset Value
`SSIE`	1	RW-H	UNDEFINED_LEGAL
`STIE`	5	RW-H	UNDEFINED_LEGAL
`SEIE`	9	RW-H	UNDEFINED_LEGAL
`LCOFIE`	13	RW-H	UNDEFINED_LEGAL

SSIE

RW-H

UNDEFINED_LEGAL

STIE

RW-H

UNDEFINED_LEGAL

SEIE

RW-H

UNDEFINED_LEGAL

LCOFIE

RW-H

UNDEFINED_LEGAL

Fields

`SSIE`

Location: vsie[1]
Description: SSIE. Read-only zero when hideleg.VSSI is 0. Else, alias of hie.VSSIE.
Type

RW-H	Read-Write with Hardware update Field is writable by software. Any value that fits in the field is acceptable. Hardware also updates the field without an explicit software write.

Reset value

UNDEFINED_LEGAL

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (CSR[hideleg].VSSI == 1) {
  CSR[hie].VSSIE = csr_value.SSIE;
}

`STIE`

Location: vsie[5]
Description: STIE. Read-only zero when hideleg.VSTI is 0. Else, alias of hie.VSTIE.
Type

RW-H	Read-Write with Hardware update Field is writable by software. Any value that fits in the field is acceptable. Hardware also updates the field without an explicit software write.

Reset value

UNDEFINED_LEGAL

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (CSR[hideleg].VSTI == 1) {
  CSR[hie].VSTIE = csr_value.STIE;
}

`SEIE`

Location: vsie[9]
Description: SEIE. Read-only zero when hideleg.VSEI is 0. Else, alias of hie.VSEIE.
Type

RW-H	Read-Write with Hardware update Field is writable by software. Any value that fits in the field is acceptable. Hardware also updates the field without an explicit software write.

Reset value

UNDEFINED_LEGAL

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (CSR[hideleg].VSEI == 1) {
  CSR[hie].VSEIE = csr_value.SEIE;
}

`LCOFIE`

Location: vsie[13]
Description: LCOFIE. Read-only zero when hideleg.LCOFI is 0. Else, alias of sie.LCOFIE.
Type

RW-H	Read-Write with Hardware update Field is writable by software. Any value that fits in the field is acceptable. Hardware also updates the field without an explicit software write.

Reset value

UNDEFINED_LEGAL

Software write

This field has special behavior when written by software (e.g., through csrrw).

When software tries to write csr_value, the field will be written with the return value of the function below.

if (CSR[hideleg].LCOFI == 1) {
  CSR[sie].LCOFIE = csr_value.LCOFIE;
}

Software read

This CSR may return a value that is different from what is stored in hardware.

Pruned
Original

XReg result = 0;
if (CSR[hideleg].VSSI == 1) {
  result[1] = CSR[hie].VSSIE;
}
if (CSR[hideleg].VSTI == 1) {
  result[5] = CSR[hie].VSTIE;
}
if (CSR[hideleg].VSEI == 1) {
  result[9] = CSR[hie].VSEIE;
}
if (CSR[hideleg].LCOFI == 1) {
  result[13] = CSR[sie].LCOFIE;
}
return result;

XReg result = 0;
if (CSR[hideleg].VSSI == 1) {
  result[1] = CSR[hie].VSSIE;
}
if (CSR[hideleg].VSTI == 1) {
  result[5] = CSR[hie].VSTIE;
}
if (CSR[hideleg].VSEI == 1) {
  result[9] = CSR[hie].VSEIE;
}
if (CSR[hideleg].LCOFI == 1) {
  result[13] = CSR[sie].LCOFIE;
}
return result;