| 192,10 → 192,29 |
|---|
| |
| |
| syscall_entry: |
| # TODO: Switch to kernel stack |
| # Switch to hidden gs |
| swapgs |
| |
| # TODO: I would like LEA instead of thes 2 instrs, |
| # why does not it work??? |
| mov %gs:0, %r10 # We have a stack in r10 |
| addq $0x0ff0, %r10 |
| |
| movq %rsp, 0(%r10) # Save old stack pointer to stack |
| movq %r10, %rsp # Change to new stack |
| pushq %rcx # Return address |
| pushq %r11 # Save flags |
| |
| # Switch back to remain consistent |
| swapgs |
| |
| movq %r9, %rcx # Exchange last parameter as a third |
| call syscall_handler |
| # Switch back |
| sysret |
| |
| popq %r11 |
| popq %rcx |
| movq 0(%rsp), %rsp |
| sysretq |
| |
| .data |
| .global interrupt_handler_size |