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规范化调整启动汇编，先初始化寄存器，再压栈，再开中断

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Ruige Lee
2025-01-27 21:48:17 +08:00
parent b75e724948
commit 0d20af8297
2 changed files with 20 additions and 14 deletions
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17
tb/sw/src/mstStartup.S
View File

@@ -9,14 +9,7 @@
_prog_start: _prog_start:
la t0, trap_entry
csrw mtvec, t0
li t0, 1 << 11
csrw mie, t0
csrr t0, mstatus
ori t0, t0, 1<<3
csrw mstatus, t0
li x1, 0 li x1, 0
li x2, 0 li x2, 0
@@ -50,7 +43,17 @@ _prog_start:
li x30, 0 li x30, 0
li x31, 0 li x31, 0
la t0, trap_entry
csrw mtvec, t0
li t0, 1 << 11
csrw mie, t0
li sp, 0x40011000 li sp, 0x40011000
csrr t0, mstatus
ori t0, t0, 1<<3
csrw mstatus, t0
call main call main
ecall ecall

17
tb/sw/src/slvStartup.S
View File

@@ -9,14 +9,7 @@
_prog_start: _prog_start:
la t0, trap_entry
csrw mtvec, t0
li t0, 1 << 11
csrw mie, t0
csrr t0, mstatus
ori t0, t0, 1<<3
csrw mstatus, t0
li x1, 0 li x1, 0
li x2, 0 li x2, 0
@@ -50,7 +43,17 @@ _prog_start:
li x30, 0 li x30, 0
li x31, 0 li x31, 0
la t0, trap_entry
csrw mtvec, t0
li t0, 1 << 11
csrw mie, t0
li sp, 0x40011000 li sp, 0x40011000
csrr t0, mstatus
ori t0, t0, 1<<3
csrw mstatus, t0
call main call main
ecall ecall