diff options
Diffstat (limited to 'sys/boot/efi/loader/arch/amd64/exc.S')
| -rw-r--r-- | sys/boot/efi/loader/arch/amd64/exc.S | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/sys/boot/efi/loader/arch/amd64/exc.S b/sys/boot/efi/loader/arch/amd64/exc.S deleted file mode 100644 index 0035d4a37e20..000000000000 --- a/sys/boot/efi/loader/arch/amd64/exc.S +++ /dev/null @@ -1,165 +0,0 @@ -/*- - * Copyright (c) 2016 The FreeBSD Foundation - * All rights reserved. - * - * This software was developed by Konstantin Belousov under sponsorship - * from the FreeBSD Foundation. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - - .macro EH N, err=1 - .align 8 - .globl EXC\N\()_handler -EXC\N\()_handler: - .if \err != 1 - pushq $0 - .endif - pushq %rax - pushq %rdx - pushq %rcx - movl $\N,%ecx - jmp all_handlers - .endm - - .text - EH 0,0 - EH 1,0 - EH 2,0 - EH 3,0 - EH 4,0 - EH 5,0 - EH 6,0 - EH 7,0 - EH 8 - EH 9,0 - EH 10 - EH 11 - EH 12 - EH 13 - EH 14 - EH 16,0 - EH 17 - EH 18,0 - EH 19,0 - EH 20,0 - - .globl exc_rsp -all_handlers: - cmpq %rsp,exc_rsp(%rip) - je exception - - /* - * Interrupt, not exception. - * First, copy the hardware interrupt frame to the previous stack. - * Our handler always has private IST stack. - */ - movq (6*8)(%rsp),%rax /* saved %rsp value, AKA old stack */ - subq (5*8),%rax - movq (3*8)(%rsp),%rdx /* copy %rip to old stack */ - movq %rdx,(%rax) - movq (4*8)(%rsp),%rdx /* copy %cs */ - movq %rdx,(1*8)(%rax) - movq (5*8)(%rsp),%rdx /* copy %rflags */ - movq %rdx,(2*8)(%rax) - movq (6*8)(%rsp),%rdx /* copy %rsp */ - movq %rdx,(3*8)(%rax) - movq (7*8)(%rsp),%rdx /* copy %ss */ - movq %rdx,(4*8)(%rax) - - /* - * Now simulate invocation of the original interrupt handler - * with retq. We switch stacks and execute retq from the old - * stack since there is no free registers at the last moment. - */ - subq $16,%rax - leaq fw_intr_handlers(%rip),%rdx - movq (%rdx,%rcx,8),%rdx /* push intr handler address on old stack */ - movq %rdx,8(%rax) - movq (2*8)(%rsp),%rcx /* saved %rax is put on top of old stack */ - movq %rcx,(%rax) - movq (%rsp),%rcx - movq 8(%rsp),%rdx - - movq 32(%rsp),%rsp /* switch to old stack */ - popq %rax - retq - -exception: - /* - * Form the struct trapframe on our IST stack. - * Skip three words, which are currently busy with temporal - * saves. - */ - pushq %r15 - pushq %r14 - pushq %r13 - pushq %r12 - pushq %r11 - pushq %r10 - pushq %rbp - pushq %rbx - pushq $0 /* %rax */ - pushq %r9 - pushq %r8 - pushq $0 /* %rcx */ - pushq $0 /* %rdx */ - pushq %rsi - pushq %rdi - - /* - * Move %rax, %rdx, %rcx values into the final location, - * from the three words which were skipped above. - */ - movq 0x88(%rsp),%rax - movq %rax,0x30(%rsp) /* tf_rax */ - movq 0x78(%rsp),%rax - movq %rax,0x18(%rsp) /* tf_rcx */ - movq 0x80(%rsp),%rax - movq %rax,0x10(%rsp) /* tf_rdx */ - - /* - * And fill the three words themself. - */ - movq %cr2,%rax - movq %rax,0x80(%rsp) /* tf_addr */ - movl %ecx,0x78(%rsp) /* tf_trapno */ - movw %ds,0x8e(%rsp) - movw %es,0x8c(%rsp) - movw %fs,0x7c(%rsp) - movw %gs,0x7e(%rsp) - movw $0,0x88(%rsp) /* tf_flags */ - - /* - * Call dump routine. - */ - movq %rsp,%rdi - callq report_exc - - /* - * Hang after reporting. Interrupts are already disabled. - */ -1: - hlt - jmp 1b |