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Diffstat (limited to 'libcpu/risc-v/virt64/stackframe.h')
| -rw-r--r-- | libcpu/risc-v/virt64/stackframe.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/libcpu/risc-v/virt64/stackframe.h b/libcpu/risc-v/virt64/stackframe.h new file mode 100644 index 0000000000..e5a5271a7a --- /dev/null +++ b/libcpu/risc-v/virt64/stackframe.h @@ -0,0 +1,163 @@ +/* + * Copyright (c) 2006-2021, RT-Thread Development Team + * + * SPDX-License-Identifier: Apache-2.0 + * + * Change Logs: + * Date Author Notes + * 2021-02-02 lizhirui first version + * 2021-02-11 lizhirui fixed gp save/store bug + */ + +#ifndef __STACKFRAME_H__ +#define __STACKFRAME_H__ + +#include "cpuport.h" + +.macro SAVE_ALL + addi sp, sp, -33 * REGBYTES + + STORE x1, 1 * REGBYTES(sp) + + csrr x1, sstatus + STORE x1, 2 * REGBYTES(sp) + + csrr x1, sepc + STORE x1, 0 * REGBYTES(sp) + + STORE x3, 3 * REGBYTES(sp) + STORE x4, 4 * REGBYTES(sp) + STORE x5, 5 * REGBYTES(sp) + STORE x6, 6 * REGBYTES(sp) + STORE x7, 7 * REGBYTES(sp) + STORE x8, 8 * REGBYTES(sp) + STORE x9, 9 * REGBYTES(sp) + STORE x10, 10 * REGBYTES(sp) + STORE x11, 11 * REGBYTES(sp) + STORE x12, 12 * REGBYTES(sp) + STORE x13, 13 * REGBYTES(sp) + STORE x14, 14 * REGBYTES(sp) + STORE x15, 15 * REGBYTES(sp) + STORE x16, 16 * REGBYTES(sp) + STORE x17, 17 * REGBYTES(sp) + STORE x18, 18 * REGBYTES(sp) + STORE x19, 19 * REGBYTES(sp) + STORE x20, 20 * REGBYTES(sp) + STORE x21, 21 * REGBYTES(sp) + STORE x22, 22 * REGBYTES(sp) + STORE x23, 23 * REGBYTES(sp) + STORE x24, 24 * REGBYTES(sp) + STORE x25, 25 * REGBYTES(sp) + STORE x26, 26 * REGBYTES(sp) + STORE x27, 27 * REGBYTES(sp) + STORE x28, 28 * REGBYTES(sp) + STORE x29, 29 * REGBYTES(sp) + STORE x30, 30 * REGBYTES(sp) + STORE x31, 31 * REGBYTES(sp) + csrr t0, sscratch + STORE t0, 32 * REGBYTES(sp) +.endm + +.macro RESTORE_ALL_ONLY + /* resw ra to sepc */ + LOAD x1, 0 * REGBYTES(sp) + csrw sepc, x1 + + LOAD x1, 2 * REGBYTES(sp) + csrw sstatus, x1 + + LOAD x1, 1 * REGBYTES(sp) + + LOAD x3, 3 * REGBYTES(sp) + LOAD x4, 4 * REGBYTES(sp) + LOAD x5, 5 * REGBYTES(sp) + LOAD x6, 6 * REGBYTES(sp) + LOAD x7, 7 * REGBYTES(sp) + LOAD x8, 8 * REGBYTES(sp) + LOAD x9, 9 * REGBYTES(sp) + LOAD x10, 10 * REGBYTES(sp) + LOAD x11, 11 * REGBYTES(sp) + LOAD x12, 12 * REGBYTES(sp) + LOAD x13, 13 * REGBYTES(sp) + LOAD x14, 14 * REGBYTES(sp) + LOAD x15, 15 * REGBYTES(sp) + LOAD x16, 16 * REGBYTES(sp) + LOAD x17, 17 * REGBYTES(sp) + LOAD x18, 18 * REGBYTES(sp) + LOAD x19, 19 * REGBYTES(sp) + LOAD x20, 20 * REGBYTES(sp) + LOAD x21, 21 * REGBYTES(sp) + LOAD x22, 22 * REGBYTES(sp) + LOAD x23, 23 * REGBYTES(sp) + LOAD x24, 24 * REGBYTES(sp) + LOAD x25, 25 * REGBYTES(sp) + LOAD x26, 26 * REGBYTES(sp) + LOAD x27, 27 * REGBYTES(sp) + LOAD x28, 28 * REGBYTES(sp) + LOAD x29, 29 * REGBYTES(sp) + LOAD x30, 30 * REGBYTES(sp) + LOAD x31, 31 * REGBYTES(sp) + + addi sp, sp, 33 * REGBYTES +.endm + +.macro RESTORE_ALL + /* resw ra to sepc */ + LOAD x1, 0 * REGBYTES(sp) + csrw sepc, x1 + + LOAD x1, 2 * REGBYTES(sp) + csrw sstatus, x1 + + LOAD x1, 1 * REGBYTES(sp) + + LOAD x3, 3 * REGBYTES(sp) + LOAD x4, 4 * REGBYTES(sp) + LOAD x5, 5 * REGBYTES(sp) + LOAD x6, 6 * REGBYTES(sp) + LOAD x7, 7 * REGBYTES(sp) + LOAD x8, 8 * REGBYTES(sp) + LOAD x9, 9 * REGBYTES(sp) + LOAD x10, 10 * REGBYTES(sp) + LOAD x11, 11 * REGBYTES(sp) + LOAD x12, 12 * REGBYTES(sp) + LOAD x13, 13 * REGBYTES(sp) + LOAD x14, 14 * REGBYTES(sp) + LOAD x15, 15 * REGBYTES(sp) + LOAD x16, 16 * REGBYTES(sp) + LOAD x17, 17 * REGBYTES(sp) + LOAD x18, 18 * REGBYTES(sp) + LOAD x19, 19 * REGBYTES(sp) + LOAD x20, 20 * REGBYTES(sp) + LOAD x21, 21 * REGBYTES(sp) + LOAD x22, 22 * REGBYTES(sp) + LOAD x23, 23 * REGBYTES(sp) + LOAD x24, 24 * REGBYTES(sp) + LOAD x25, 25 * REGBYTES(sp) + LOAD x26, 26 * REGBYTES(sp) + LOAD x27, 27 * REGBYTES(sp) + LOAD x28, 28 * REGBYTES(sp) + LOAD x29, 29 * REGBYTES(sp) + LOAD x30, 30 * REGBYTES(sp) + LOAD x31, 31 * REGBYTES(sp) + + //restore user sp + LOAD sp, 32 * REGBYTES(sp) +.endm + +.macro RESTORE_SYS_GP + .option push + .option norelax + la gp, __global_pointer$ + .option pop +.endm + +.macro OPEN_INTERRUPT + csrsi sstatus, 2 +.endm + +.macro CLOSE_INTERRUPT + csrci sstatus, 2 +.endm + +#endif
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