projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 550f196e S |
1 | //------------------------------------------------------------------------------\r |
| 2 | //\r | |
| 3 | // CPU scratch register related functions for RISC-V\r | |
| 4 | //\r | |
| 5 | // Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>\r | |
| 6 | //\r | |
| 7 | // SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
| 8 | //\r | |
| 9 | //------------------------------------------------------------------------------\r | |
| 10 | \r | |
| 11 | #include <Register/RiscV64/RiscVImpl.h>\r | |
| 12 | \r | |
| 13 | .data\r | |
| 14 | .align 3\r | |
| 15 | .section .text\r | |
| 16 | \r | |
| 17 | //\r | |
| 18 | // Set Supervisor mode scratch.\r | |
| 19 | // @param a0 : Value set to Supervisor mode scratch\r | |
| 20 | //\r | |
| 21 | ASM_FUNC (RiscVSetSupervisorScratch)\r | |
| 22 | csrw CSR_SSCRATCH, a0\r | |
| 23 | ret\r | |
| 24 | \r | |
| 25 | //\r | |
| 26 | // Get Supervisor mode scratch.\r | |
| 27 | // @retval a0 : Value in Supervisor mode scratch\r | |
| 28 | //\r | |
| 29 | ASM_FUNC (RiscVGetSupervisorScratch)\r | |
| 30 | csrr a0, CSR_SSCRATCH\r | |
| 31 | ret\r |