DragonOS-Community/DragonOS
1
1
Fork 0
mirror of https://github.com/DragonOS-Community/DragonOS.git synced 2025-06-11 09:06:47 +00:00
Code Issues Releases Wiki Activity

将entry.S中冗余的ret_from_syscall代码删除，改为jmp Restore_all (#98)

Browse Source 
* 将entry.S中冗余的ret_from_syscall代码删除，改为jmp Restore_all
This commit is contained in:
login 2022-11-29 21:46:13 +08:00 committed by GitHub
parent d85ebf1ff5
commit 036acc52ce
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 1 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
kernel/src/exception/entry.S
View File

@ -142,36 +142,9 @@ ENTRY(system_call)
callq system_call_function
// 从系统调用中返回
ENTRY(ret_from_system_call)
popq %r15
popq %r14
popq %r13
popq %r12
popq %r11
popq %r10
popq %r9
popq %r8
popq %rbx
popq %rcx
popq %rdx
popq %rsi
popq %rdi
popq %rbp
popq %rax // 不允许直接pop到ds
movq %rax, %ds
popq %rax
movq %rax, %es
popq %rax
addq $0x10, %rsp // 弹出变量FUNC和errcode
sti
iretq
jmp Restore_all