| handle_exception: |
| push %r15 |
| push %r14 |
| push %r13 |
| push %r12 |
| push %r11 |
| push %r10 |
| push %r9 |
| push %r8 |
| |
| push %rdi |
| push %rsi |
| push %rbp |
| push %rbx |
| push %rdx |
| push %rcx |
| push %rax |
| mov %rsp, %rdi |
| |
| call route_exception |
| |
| pop %rax |
| pop %rcx |
| pop %rdx |
| pop %rbx |
| pop %rbp |
| pop %rsi |
| pop %rdi |
| pop %r8 |
| pop %r9 |
| pop %r10 |
| pop %r11 |
| pop %r12 |
| pop %r13 |
| pop %r14 |
| pop %r15 |
| |
| /* Discard vector and error code. */ |
| add $16, %rsp |
| iretq |
| |
| /* |
| * Build the handle_exception wrappers which push the vector/error code on the |
| * stack and an array of pointers to those wrappers. |
| */ |
| .pushsection .rodata |
| .globl idt_handlers |
| idt_handlers: |
| .popsection |
| |
| .macro HANDLERS has_error from to |
| vector = \from |
| .rept \to - \from + 1 |
| .align 8 |
| |
| /* Fetch current address and append it to idt_handlers. */ |
| current_handler = . |
| .pushsection .rodata |
| .quad current_handler |
| .popsection |
| |
| .if ! \has_error |
| pushq $0 |
| .endif |
| pushq $vector |
| jmp handle_exception |
| vector = vector + 1 |
| .endr |
| .endm |
| |
| .global idt_handler_code |
| idt_handler_code: |
| HANDLERS has_error=0 from=0 to=7 |
| HANDLERS has_error=1 from=8 to=8 |
| HANDLERS has_error=0 from=9 to=9 |
| HANDLERS has_error=1 from=10 to=14 |
| HANDLERS has_error=0 from=15 to=16 |
| HANDLERS has_error=1 from=17 to=17 |
| HANDLERS has_error=0 from=18 to=255 |
| |
| .section .note.GNU-stack, "", %progbits |
