94 lines
3.1 KiB
Plaintext
94 lines
3.1 KiB
Plaintext
|
||
build/kernel.elf: file format elf64-littleriscv
|
||
|
||
|
||
Disassembly of section .text:
|
||
|
||
0000000080000000 <_start>:
|
||
.section .text.entry
|
||
.global _start
|
||
|
||
_start:
|
||
# 初始化栈（使用链接脚本中定义的 stack_top）
|
||
la sp, stack_top
|
||
80000000: 00000117 auipc sp,0x0
|
||
80000004: 0a010113 addi sp,sp,160 # 800000a0 <stack_top>
|
||
|
||
# 调用 main 函数
|
||
call main
|
||
80000008: 030000ef jal 80000038 <main>
|
||
|
||
000000008000000c <loop>:
|
||
|
||
# main 返回后进入死循环
|
||
loop:
|
||
j loop
|
||
8000000c: a001 j 8000000c <loop>
|
||
|
||
000000008000000e <add>:
|
||
|
||
int add(int a, int b) {
|
||
8000000e: 1101 addi sp,sp,-32
|
||
80000010: ec22 sd s0,24(sp)
|
||
80000012: 1000 addi s0,sp,32
|
||
80000014: 87aa mv a5,a0
|
||
80000016: 872e mv a4,a1
|
||
80000018: fef42623 sw a5,-20(s0)
|
||
8000001c: 87ba mv a5,a4
|
||
8000001e: fef42423 sw a5,-24(s0)
|
||
return a + b; // 待调试的函数
|
||
80000022: fec42783 lw a5,-20(s0)
|
||
80000026: 873e mv a4,a5
|
||
80000028: fe842783 lw a5,-24(s0)
|
||
8000002c: 9fb9 addw a5,a5,a4
|
||
8000002e: 2781 sext.w a5,a5
|
||
}
|
||
80000030: 853e mv a0,a5
|
||
80000032: 6462 ld s0,24(sp)
|
||
80000034: 6105 addi sp,sp,32
|
||
80000036: 8082 ret
|
||
|
||
0000000080000038 <main>:
|
||
|
||
int main() {
|
||
80000038: 7179 addi sp,sp,-48
|
||
8000003a: f406 sd ra,40(sp)
|
||
8000003c: f022 sd s0,32(sp)
|
||
8000003e: 1800 addi s0,sp,48
|
||
int x = 5;
|
||
80000040: 4795 li a5,5
|
||
80000042: fef42623 sw a5,-20(s0)
|
||
int y = 3;
|
||
80000046: 478d li a5,3
|
||
80000048: fef42423 sw a5,-24(s0)
|
||
int result = add(x, y);
|
||
8000004c: fe842703 lw a4,-24(s0)
|
||
80000050: fec42783 lw a5,-20(s0)
|
||
80000054: 85ba mv a1,a4
|
||
80000056: 853e mv a0,a5
|
||
80000058: fb7ff0ef jal 8000000e <add>
|
||
8000005c: 87aa mv a5,a0
|
||
8000005e: fef42223 sw a5,-28(s0)
|
||
volatile char *tohost_addr = (volatile char *)(0x80001000 - 4);
|
||
80000062: 200007b7 lui a5,0x20000
|
||
80000066: 3ff78793 addi a5,a5,1023 # 200003ff <_start-0x5ffffc01>
|
||
8000006a: 078a slli a5,a5,0x2
|
||
8000006c: fcf43c23 sd a5,-40(s0)
|
||
*tohost_addr = 0xff;
|
||
80000070: fd843783 ld a5,-40(s0)
|
||
80000074: 577d li a4,-1
|
||
80000076: 00e78023 sb a4,0(a5)
|
||
*tohost_addr = result;
|
||
8000007a: fe442783 lw a5,-28(s0)
|
||
8000007e: 0ff7f713 zext.b a4,a5
|
||
80000082: fd843783 ld a5,-40(s0)
|
||
80000086: 00e78023 sb a4,0(a5)
|
||
return 0;
|
||
8000008a: 4781 li a5,0
|
||
}
|
||
8000008c: 853e mv a0,a5
|
||
8000008e: 70a2 ld ra,40(sp)
|
||
80000090: 7402 ld s0,32(sp)
|
||
80000092: 6145 addi sp,sp,48
|
||
80000094: 8082 ret
|