/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│ │vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│ ╞══════════════════════════════════════════════════════════════════════════════╡ │ Copyright 2020 Justine Alexandra Roberts Tunney │ │ │ │ This program is free software; you can redistribute it and/or modify │ │ it under the terms of the GNU General Public License as published by │ │ the Free Software Foundation; version 2 of the License. │ │ │ │ This program is distributed in the hope that it will be useful, but │ │ WITHOUT ANY WARRANTY; without even the implied warranty of │ │ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │ │ General Public License for more details. │ │ │ │ You should have received a copy of the GNU General Public License │ │ along with this program; if not, write to the Free Software │ │ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │ │ 02110-1301 USA │ ╚─────────────────────────────────────────────────────────────────────────────*/ #include "libc/macros.h" .privileged .source __FILE__ / @fileoverview Address Sanitizer Thunks / / This has tiny code size and reduces API surface area / since ASAN has the same stylistic hugeness as UBSAN. / We also guard all the functions, against reentrancy. __asan_report_load1: push $1 jmp OnReportLoad .endfn __asan_report_load1,globl __asan_report_load2: push $2 jmp OnReportLoad .endfn __asan_report_load2,globl __asan_report_load4: push $4 jmp OnReportLoad .endfn __asan_report_load4,globl __asan_report_load8: push $8 jmp OnReportLoad .endfn __asan_report_load8,globl __asan_report_load16: push $16 / 𝑠𝑙𝑖𝑑𝑒 .endfn __asan_report_load16,globl OnReportLoad: pop %rsi ezlea __asan_report_load_n,ax jmp __asan_report_noreentry .endfn OnReportLoad __asan_report_store1: push $1 jmp ReportStore .endfn __asan_report_store1,globl __asan_report_store2: push $2 jmp ReportStore .endfn __asan_report_store2,globl __asan_report_store4: push $4 jmp ReportStore .endfn __asan_report_store4,globl __asan_report_store8: push $8 jmp ReportStore .endfn __asan_report_store8,globl __asan_report_store16: push $16 jmp ReportStore .endfn __asan_report_store16,globl __asan_report_store32: push $32 / 𝑠𝑙𝑖𝑑𝑒 .endfn __asan_report_store32,globl ReportStore: pop %rsi ezlea __asan_report_store_n,ax / 𝑠𝑙𝑖𝑑𝑒 .endfn ReportStore __asan_report_noreentry: push %rbp mov %rsp,%rbp cmpb $0,noreentry(%rip) jnz 2f incb noreentry(%rip) call *%rax decb noreentry(%rip) pop %rbp ret 2: call abort .endfn __asan_report_noreentry __asan_stack_free_0: push $0 jmp OnStackFree .endfn __asan_stack_free_0,globl __asan_stack_free_1: push $1 jmp OnStackFree .endfn __asan_stack_free_1,globl __asan_stack_free_2: push $2 jmp OnStackFree .endfn __asan_stack_free_2,globl __asan_stack_free_3: push $3 jmp OnStackFree .endfn __asan_stack_free_3,globl __asan_stack_free_4: push $4 jmp OnStackFree .endfn __asan_stack_free_4,globl __asan_stack_free_5: push $5 jmp OnStackFree .endfn __asan_stack_free_5,globl __asan_stack_free_6: push $6 jmp OnStackFree .endfn __asan_stack_free_6,globl __asan_stack_free_7: push $7 jmp OnStackFree .endfn __asan_stack_free_7,globl __asan_stack_free_8: push $8 jmp OnStackFree .endfn __asan_stack_free_8,globl __asan_stack_free_9: push $9 jmp OnStackFree .endfn __asan_stack_free_9,globl __asan_stack_free_10: push $10 / 𝑠𝑙𝑖𝑑𝑒 .endfn __asan_stack_free_10,globl OnStackFree: pop %rdx jmp __asan_stack_free .endfn OnStackFree __asan_stack_malloc_0: push $0 jmp OnStackMalloc .endfn __asan_stack_malloc_0,globl __asan_stack_malloc_1: push $1 jmp OnStackMalloc .endfn __asan_stack_malloc_1,globl __asan_stack_malloc_2: push $2 jmp OnStackMalloc .endfn __asan_stack_malloc_2,globl __asan_stack_malloc_3: push $3 jmp OnStackMalloc .endfn __asan_stack_malloc_3,globl __asan_stack_malloc_4: push $4 jmp OnStackMalloc .endfn __asan_stack_malloc_4,globl __asan_stack_malloc_5: push $5 jmp OnStackMalloc .endfn __asan_stack_malloc_5,globl __asan_stack_malloc_6: push $6 jmp OnStackMalloc .endfn __asan_stack_malloc_6,globl __asan_stack_malloc_7: push $7 jmp OnStackMalloc .endfn __asan_stack_malloc_7,globl __asan_stack_malloc_8: push $8 jmp OnStackMalloc .endfn __asan_stack_malloc_8,globl __asan_stack_malloc_9: push $9 jmp OnStackMalloc .endfn __asan_stack_malloc_9,globl __asan_stack_malloc_10: push $10 / 𝑠𝑙𝑖𝑑𝑒 .endfn __asan_stack_malloc_10,globl OnStackMalloc: pop %rsi jmp __asan_stack_malloc .endfn OnStackMalloc __asan_handle_no_return: ret .endfn __asan_handle_no_return,globl __asan_before_dynamic_init: ret .endfn __asan_before_dynamic_init,globl __asan_after_dynamic_init: ret .endfn __asan_after_dynamic_init,globl __asan_version_mismatch_check_v8: ret .endfn __asan_version_mismatch_check_v8,globl / Initializes Address Sanitizer runtime earlier if linked. .init.start 301,_init_asan push %rdi push %rsi mov %r12,%rdi mov %r13,%rsi mov %r14,%rdx mov %r15,%rcx call __asan_init pop %rsi pop %rdi .init.end 301,_init_asan .rodata.cst4 __asan_option_detect_stack_use_after_return: .long 0 .endobj __asan_option_detect_stack_use_after_return,globl .previous .bss noreentry: .byte 0 .endobj noreentry .previous