99 lines
2.3 KiB
ArmAsm
99 lines
2.3 KiB
ArmAsm
|
// See LICENSE for license details
|
||
|
|
|
||
|
|
#ifndef ENTRY_S
|
||
|
|
#define ENTRY_S
|
||
|
|
|
||
|
|
#include "encoding.h"
|
||
|
|
#include "sifive/bits.h"
|
||
|
|
|
||
|
|
.section .text.entry
|
||
|
|
.align 2
|
||
|
|
.weak trap_entry
|
||
|
|
.global trap_entry
|
||
|
|
trap_entry:
|
||
|
|
addi sp, sp, -32*REGBYTES
|
||
|
|
|
||
|
|
STORE x1, 1*REGBYTES(sp)
|
||
|
|
STORE x2, 2*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 a0, mcause
|
||
|
|
csrr a1, mepc
|
||
|
|
mv a2, sp
|
||
|
|
call handle_trap
|
||
|
|
csrw mepc, a0
|
||
|
|
|
||
|
|
# Remain in M-mode after mret
|
||
|
|
li t0, MSTATUS_MPP
|
||
|
|
csrs mstatus, t0
|
||
|
|
|
||
|
|
LOAD x1, 1*REGBYTES(sp)
|
||
|
|
LOAD x2, 2*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, 32*REGBYTES
|
||
|
|
mret
|
||
|
|
|
||
|
|
.weak handle_trap
|
||
|
|
handle_trap:
|
||
|
|
1:
|
||
|
|
j 1b
|
||
|
|
|
||
|
|
#endif
|