projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| cd24eb57 CL |
1 | #------------------------------------------------------------------------------\r |
| 2 | #\r | |
| 3 | # InternalSwitchStackAsm for LoongArch\r | |
| 4 | #\r | |
| 5 | # Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>\r | |
| 6 | #\r | |
| 7 | # SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
| 8 | #\r | |
| 9 | #------------------------------------------------------------------------------\r | |
| 10 | \r | |
| 11 | #define STORE st.d /* 64 bit mode regsave instruction */\r | |
| 12 | #define LOAD ld.d /* 64 bit mode regload instruction */\r | |
| 13 | #define RSIZE 8 /* 64 bit mode register size */\r | |
| 14 | \r | |
| 15 | ASM_GLOBAL ASM_PFX(InternalSwitchStackAsm)\r | |
| 16 | \r | |
| 17 | /**\r | |
| 18 | This allows the caller to switch the stack and goes to the new entry point\r | |
| 19 | \r | |
| 20 | @param JumpBuffer A pointer to CPU context buffer.\r | |
| 21 | **/\r | |
| 22 | \r | |
| 23 | ASM_PFX(InternalSwitchStackAsm):\r | |
| 24 | LOAD $ra, $a0, RSIZE * 11\r | |
| 25 | LOAD $s0, $a0, RSIZE * 0\r | |
| 26 | LOAD $s1, $a0, RSIZE * 1\r | |
| 27 | LOAD $s2, $a0, RSIZE * 2\r | |
| 28 | LOAD $s3, $a0, RSIZE * 3\r | |
| 29 | LOAD $s4, $a0, RSIZE * 4\r | |
| 30 | LOAD $s5, $a0, RSIZE * 5\r | |
| 31 | LOAD $s6, $a0, RSIZE * 6\r | |
| 32 | LOAD $s7, $a0, RSIZE * 7\r | |
| 33 | LOAD $s8, $a0, RSIZE * 8\r | |
| 34 | LOAD $sp, $a0, RSIZE * 9\r | |
| 35 | LOAD $fp, $a0, RSIZE * 10\r | |
| 36 | LOAD $a0, $sp, 0\r | |
| 37 | LOAD $a1, $sp, 8\r | |
| 38 | jirl $zero, $ra, 0\r | |
| 39 | .end\r |