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修正未能正确获取C语言全局变量地址的bug，代码正确运行

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bacon
2025-02-03 12:13:17 +08:00
parent 8b7dd6d9ff
commit a5d2f7e947
3 changed files with 15 additions and 14 deletions
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2
tb/sw/linker.lds
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@@ -37,6 +37,6 @@ SECTIONS
_RODATA_END_ = .; _RODATA_END_ = .;
} }
. = 0x40000800; /*. = 0x40000800;*/
.trap_entry : { *(.trap_entry)} .trap_entry : { *(.trap_entry)}
} }

25
tb/sw/src/mstStartup.S
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@@ -54,21 +54,22 @@ _prog_start:
lw a0, %lo(plic_claim)(t0) lw a0, %lo(plic_claim)(t0)
#la a0, plic_claim #la a0, plic_claim
lui t0, %hi(flag_intTxEnd) #lui t0, %hi(flag_intTxEnd)
lw a1, %lo(flag_intTxEnd)(t0) #lw a1, %lo(flag_intTxEnd)(t0)
#la a1, flag_intTxEnd
la a1, flag_intTxEnd
lui t0, %hi(flag_intRxError) #lui t0, %hi(flag_intRxError)
lw a2, %lo(flag_intRxError)(t0) #lw a2, %lo(flag_intRxError)(t0)
#la a2, flag_intRxError la a2, flag_intRxError
lui t0, %hi(flag_intRxStart) #lui t0, %hi(flag_intRxStart)
lw a3, %lo(flag_intRxStart)(t0) #lw a3, %lo(flag_intRxStart)(t0)
#la a3, flag_intRxStart la a3, flag_intRxStart
lui t0, %hi(flag_intRxEnd) #lui t0, %hi(flag_intRxEnd)
lw a4, %lo(flag_intRxEnd)(t0) #lw a4, %lo(flag_intRxEnd)(t0)
#la a4, flag_intRxEnd la a4, flag_intRxEnd
call mst_svr_code call mst_svr_code
mv t0, a0 #这里选择不同的trap_entry服务函数,这个是RV32I的代码 mv t0, a0 #这里选择不同的trap_entry服务函数,这个是RV32I的代码

2
tb/sw/src/mstSvr.S
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@@ -50,7 +50,7 @@ _rv32i_plic_handle:
sw x23, 0(x17) # *plic_claim = x23 sw x23, 0(x17) # *plic_claim = x23
#li x25, 1 #li x25, 1
li x24, CDR_INT_TXEND li x24, CDR_INT_TXEND
bne x23, x24, 1f #_if (x23 != x24) goto 1f bne x23, x24, 1f #_if (x23 != x24) goto 1f
sw x25, 0(x18) #_else sw x25, 0(x18) #_else