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[VENTUS][RISCV][feat] Add exception handler to stop spike in crt0.s

This commit is contained in:
zhoujingya 2023-04-27 10:19:21 +08:00
parent 5f776bde21
commit 724033f20a
1 changed files with 9 additions and 7 deletions
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16
libclc/riscv32/lib/crt0.S
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@ -44,7 +44,7 @@ _start:
csrr sp, CSR_LDS # sp points to baseaddr of local memory of each SM csrr sp, CSR_LDS # sp points to baseaddr of local memory of each SM
# TODO: after we complete the stack adjustment for tp # TODO: after we complete the stack adjustment for tp
# change below code into addi tp, x0, 0 # change below code into addi tp, x0, 0
csrr tp, CSR_PDS # tp points to baseaddr for lower bound of private memory(1K) of each thread csrr tp, CSR_PDS # tp points to baseaddr for lower bound of private memory(1K) of each thread
# clear BSS segment # clear BSS segment
la a0, _edata la a0, _edata
@ -56,16 +56,18 @@ _start:
bltu a0, a2, 1b bltu a0, a2, 1b
2: 2:
csrr t0, CSR_KNL # get addr of kernel metadata csrr t0, CSR_KNL # get addr of kernel metadata
lw t1, KNL_ENTRY(t0) # get kernel program address lw t1, KNL_ENTRY(t0) # get kernel program address
lw a0, KNL_ARG_BASE(t0) # get kernel arg buffer base address lw a0, KNL_ARG_BASE(t0) # get kernel arg buffer base address
lw t2, KNL_PRINT_ADDR(t0) # get kernel print buffer address lw t2, KNL_PRINT_ADDR(t0) # get kernel print buffer address
lw t3, KNL_PRINT_SIZE(t0) # get kernel print buffer size lw t3, KNL_PRINT_SIZE(t0) # get kernel print buffer size
la t4, BUFFER_ADDR la t4, BUFFER_ADDR
la t5, BUFFER_SIZE la t5, BUFFER_SIZE
sw t2, 0(t4) sw t2, 0(t4)
sw t3, 0(t5) sw t3, 0(t5)
jalr t1 # call kernel program la t6, spike_end # exception to stop spike
csrw mtvec, t6
jalr t1 # call kernel program
# call exit routine # call exit routine
# tail exit # tail exit