1 files changed, 87 insertions, 0 deletions
diff --git a/semestr-5/so/lista2/segv.s b/semestr-5/so/lista2/segv.s
new file mode 100644
index 0000000..3545549
--- /dev/null
+++ b/semestr-5/so/lista2/segv.s
@@ -0,0 +1,87 @@
+	.file	"segv.c"
+	.text
+	.globl	p
+	.bss
+	.align 8
+	.type	p, @object
+	.size	p, 8
+p:
+	.zero	8
+	.section	.rodata
+.LC0:
+	.string	"Segv handler! p: %p\n"
+	.text
+	.globl	segv_handler
+	.type	segv_handler, @function
+segv_handler:
+.LFB6:
+	.cfi_startproc
+	pushq	%rbp
+	.cfi_def_cfa_offset 16
+	.cfi_offset 6, -16
+	movq	%rsp, %rbp
+	.cfi_def_cfa_register 6
+	addq	$-128, %rsp
+	movl	%edi, -116(%rbp)
+	movq	%fs:40, %rax
+	movq	%rax, -8(%rbp)
+	xorl	%eax, %eax
+	movq	p(%rip), %rdx
+	leaq	-112(%rbp), %rax
+	leaq	.LC0(%rip), %rcx
+	movq	%rcx, %rsi
+	movq	%rax, %rdi
+	movl	$0, %eax
+	call	sprintf@PLT
+	movq	p(%rip), %rax
+	testq	%rax, %rax
+	jne	.L2
+	movl	$8, %edi
+	call	malloc@PLT
+	movq	%rax, p(%rip)
+.L2:
+	leaq	-112(%rbp), %rax
+	movq	%rax, %rdi
+	call	strlen@PLT
+	movq	%rax, %rdx
+	leaq	-112(%rbp), %rax
+	movq	%rax, %rsi
+	movl	$1, %edi
+	call	write@PLT
+	nop
+	movq	-8(%rbp), %rax
+	subq	%fs:40, %rax
+	je	.L3
+	call	__stack_chk_fail@PLT
+.L3:
+	leave
+	.cfi_def_cfa 7, 8
+	ret
+	.cfi_endproc
+.LFE6:
+	.size	segv_handler, .-segv_handler
+	.globl	main
+	.type	main, @function
+main:
+.LFB7:
+	.cfi_startproc
+	pushq	%rbp
+	.cfi_def_cfa_offset 16
+	.cfi_offset 6, -16
+	movq	%rsp, %rbp
+	.cfi_def_cfa_register 6
+	leaq	segv_handler(%rip), %rax
+	movq	%rax, %rsi
+	movl	$11, %edi
+	call	signal@PLT
+	movq	p(%rip), %rax
+	movb	$1, (%rax)
+	movl	$0, %eax
+	popq	%rbp
+	.cfi_def_cfa 7, 8
+	ret
+	.cfi_endproc
+.LFE7:
+	.size	main, .-main
+	.ident	"GCC: (GNU) 11.1.0"
+	.section	.note.GNU-stack,"",@progbits