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Delete ASAN

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It hasn't been helpful enough to be justify the maintenance burden. What
actually does help is mprotect(), kprintf(), --ftrace and --strace which
can always be counted upon to work correctly. We aren't losing much with
this change. Support for ASAN on AARCH64 was never implemented. Applying
ASAN to the core libc runtimes was disabled many months ago. If there is
some way to have an ASAN runtime for user programs that is less invasive
we can potentially consider reintroducing support. But now is premature.
This commit is contained in:
Justine Tunney 2024-06-22 05:45:49 -07:00
parent 6ffed14b9c
commit d1d4388201
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GPG key ID: BE714B4575D6E328
198 changed files with 130 additions and 2954 deletions
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19
libc/macros.internal.h
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@ -488,31 +488,12 @@
.endm
.macro .poison name:req kind:req
#ifdef __SANITIZE_ADDRESS__
2323: .quad 0
.init.start 304,"_init_\name\()_poison_\@"
push %rdi
push %rsi
ezlea 2323b,di
mov $8,%esi
mov $\kind,%edx
call __asan_poison
pop %rsi
pop %rdi
.init.end 304,"_init_\name\()_poison_\@"
#endif
.endm
.macro .underrun
#ifdef __SANITIZE_ADDRESS__
.poison __BASE_FILE__, -20 # kAsanGlobalUnderrun
#endif
.endm
.macro .overrun
#ifdef __SANITIZE_ADDRESS__
.poison __BASE_FILE__, -21 # kAsanGlobalOverrun
#endif
.endm
#else