169 lines
2.0 KiB
ArmAsm
169 lines
2.0 KiB
ArmAsm
// TODO: CHECK/REPLACE/UPDATE OLD CODE (this file is based on xv6, although it was converted from inline functions to plain assembly)
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.option norvc
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.text
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.globl r_mhartid
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r_mhartid:
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csrr a0, mhartid
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ret
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.globl r_mstatus
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r_mstatus:
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csrr a0, mstatus
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ret
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.globl w_mstatus
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w_mstatus:
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csrw mstatus, a0
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ret
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.globl w_mepc
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w_mepc:
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csrw mepc, a0
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ret
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.globl r_sstatus
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r_sstatus:
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csrr a0, sstatus
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ret
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.globl w_sstatus
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w_sstatus:
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csrw sstatus, a0
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ret
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.globl r_sip
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r_sip:
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csrr a0, sip
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ret
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.globl w_sip
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w_sip:
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csrw sip, a0
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ret
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.globl r_sie
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r_sie:
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csrr a0, sie
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ret
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.globl w_sie
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w_sie:
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csrw sie, a0
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ret
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.globl r_mie
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r_mie:
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csrr a0, mie
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ret
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.globl w_mie
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w_mie:
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csrw mie, a0
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ret
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.globl w_sepc
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w_sepc:
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csrw sepc, a0
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ret
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.globl r_sepc
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r_sepc:
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csrr a0, sepc
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ret
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.globl r_medeleg
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r_medeleg:
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csrr a0, medeleg
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ret
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.globl w_medeleg
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w_medeleg:
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csrw medeleg, a0
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ret
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.globl r_mideleg
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r_mideleg:
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csrr a0, mideleg
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ret
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.globl w_mideleg
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w_mideleg:
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csrw mideleg, a0
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ret
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.globl w_stvec
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w_stvec:
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csrw stvec, a0
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ret
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.globl r_stvec
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r_stvec:
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csrr a0, stvec
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ret
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.globl r_stimecmp
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r_stimecmp:
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csrr a0, 0x14d
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ret
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.globl w_stimecmp
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w_stimecmp:
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csrw 0x14d, a0
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ret
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.globl r_menvcfg
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r_menvcfg:
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csrr a0, 0x30a
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ret
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.globl w_menvcfg
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w_menvcfg:
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csrw 0x30a, a0
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ret
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.globl w_pmpcfg0
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w_pmpcfg0:
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csrw pmpcfg0, a0
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ret
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.globl w_pmpaddr0
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w_pmpaddr0:
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csrw pmpaddr0, a0
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ret
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.globl w_satp
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w_satp:
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csrw satp, a0
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ret
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.globl r_satp
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r_satp:
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csrr a0, satp
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ret
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.globl r_scause
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r_scause:
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csrr a0, scause
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ret
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.globl r_stval
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r_stval:
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csrr a0, stval
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ret
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.globl w_mcounteren
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w_mcounteren:
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csrw mcounteren, a0
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ret
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.globl r_mcounteren
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r_mcounteren:
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csrr a0, mcounteren
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ret
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.globl r_time
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r_time:
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csrr a0, time
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ret
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.globl intr_on
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intr_on:
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csrr a5, sstatus
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ori a5,a5,2
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csrw sstatus, a5
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ret
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.globl intr_off
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intr_off:
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csrr a5, sstatus
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andi a5,a5,-3
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csrw sstatus, a5
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ret
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.globl intr_get
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intr_get:
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csrr a0, sstatus
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bexti a0,a0,1
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ret
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.globl r_sp
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r_sp:
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mv a0, sp
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ret
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.globl w_tp
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w_tp:
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mv tp, a0
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ret
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.globl r_ra
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r_ra:
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mv a0, ra
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ret
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.globl sfence_vma
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sfence_vma:
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sfence.vma zero, zero
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ret
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