RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-19 20:25:07 +00:00
Code Issues Activity Actions

Kernel: Implement syscall entry for x86_64

Browse source
This commit is contained in:
Gunnar Beutner 2021-06-28 20:57:44 +02:00 • committed by Andreas Kling
parent 732dc72c58
commit b6435372cc
1 changed files with 27 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

29
Kernel/Syscall.cpp
View file

@ -55,8 +55,33 @@ NEVER_INLINE void syscall_asm_entry_dummy()
asm( asm(
".globl syscall_asm_entry\n" ".globl syscall_asm_entry\n"
"syscall_asm_entry:\n" "syscall_asm_entry:\n"
" cli\n" " pushq $0x0\n"
" hlt\n"); " pushq %r15\n"
" pushq %r14\n"
" pushq %r13\n"
" pushq %r12\n"
" pushq %r11\n"
" pushq %r10\n"
" pushq %r9\n"
" pushq %r8\n"
" pushq %rax\n"
" pushq %rcx\n"
" pushq %rdx\n"
" pushq %rbx\n"
" pushq %rsp\n"
" pushq %rbp\n"
" pushq %rsi\n"
" pushq %rdi\n"
" pushq %rsp \n" /* set TrapFrame::regs */
" subq $" __STRINGIFY(TRAP_FRAME_SIZE - 8) ", %rsp \n"
" subq $0x8, %rsp\n" /* align stack */
" lea 0x8(%rsp), %rdi \n"
" cld\n"
" call enter_trap_no_irq \n"
" lea 0x8(%rsp), %rdi \n"
" call syscall_handler\n"
" addq $0x8, %rsp\n" /* undo alignment */
" jmp common_trap_exit \n");
#endif #endif
// clang-format on // clang-format on
} }