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Implement crash reporting for AARCH64

Browse source 
The ShowCrashReports() feature for aarch64 should work even better than
the x86 crash reports. Thanks to the benefit of hindsight these reports
should be rock solid reliable and beautiful to read.

This change also improves the syscall polyfills for aarch64. Some of the
sys_foo() functions have been removed, usually because they're legacy or
downright footguns not worth building.
This commit is contained in:
Justine Tunney 2023-05-12 05:47:54 -07:00
parent 285e8a2348
commit 1f2a5a8fc1
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
42 changed files with 540 additions and 247 deletions
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2
libc/sysv/calls/__sys_pipe.S
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@ -1,2 +1,2 @@
#include "libc/sysv/macros.internal.h"
.scall __sys_pipe,0x02a10721e202a016,0xfff,globl,hidden
.scall __sys_pipe,0x02a10721e202a016,0x03b,globl,hidden

2
libc/sysv/calls/__sys_poll.S Normal file
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@ -0,0 +1,2 @@
#include "libc/sysv/macros.internal.h"
.scall __sys_poll,0x8d18fc8d128e6807,0xfff,globl,hidden

2
libc/sysv/calls/sys_chmod.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_chmod,0x00f00f00f200f05a,0xfff,globl,hidden

2
libc/sysv/calls/sys_chown.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_chown,0x010010010201005c,0xfff,globl,hidden

2
libc/sysv/calls/sys_creat.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_creat,0x008fff008ffff055,0xfff,globl,hidden

2
libc/sysv/calls/sys_dup2.S
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@ -1,2 +1,2 @@
#include "libc/sysv/macros.internal.h"
.scall sys_dup2,0x05a05a05a205a021,0xfff,globl,hidden
.scall sys_dup2,0x05a05a05a205a021,0x018,globl,hidden

2
libc/sysv/calls/sys_futimesat.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_futimesat,0xffffff1eeffff105,0xfff,globl,hidden

2
libc/sysv/calls/sys_getpgrp.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_getpgrp,0x051051051205106f,0xfff,globl,hidden

2
libc/sysv/calls/sys_lchown.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_lchown,0x1130fe0fe216c05e,0xfff,globl,hidden

2
libc/sysv/calls/sys_link.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_link,0x0090090092009056,0xfff,globl,hidden

2
libc/sysv/calls/sys_mkdir.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_mkdir,0x0880880882088053,0xfff,globl,hidden

2
libc/sysv/calls/sys_poll.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_poll,0x8d18fc8d128e6807,0xfff,globl,hidden

2
libc/sysv/calls/sys_readlink.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_readlink,0x03a03a03a203a059,0xfff,globl,hidden

2
libc/sysv/calls/sys_rename.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_rename,0x0800800802080052,0xfff,globl,hidden

2
libc/sysv/calls/sys_rmdir.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_rmdir,0x0890890892089054,0xfff,globl,hidden

2
libc/sysv/calls/sys_symlink.S
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@ -1,2 +0,0 @@
#include "libc/sysv/macros.internal.h"
.scall sys_symlink,0x0390390392039058,0xfff,globl,hidden

7
libc/sysv/macros.internal.h
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@ -32,8 +32,13 @@
ret
.endif
#elif defined(__aarch64__)
\name: mov x8,#\arm
\name:
.ifc \arm,0xfff
mov x0,#-38 // -ENOSYS
.else
mov x8,#\arm
svc #0
.endif
b _sysret
.hidden _sysret
#else

18
libc/sysv/syscalls.sh
View file

@ -41,7 +41,7 @@ scall sys_close 0x0060060062006003 0x039 globl hidden
scall __sys_stat 0x1b7026fff2152004 0x04f globl hidden # FreeBSD 11→12 fumble; use sys_fstatat(); blocked on Android
scall __sys_fstat 0x1b80352272153005 0x050 globl hidden # needs __stat2linux()
scall __sys_lstat 0x1b90280282154006 0xfff globl hidden # needs __stat2linux(); blocked on Android
scall sys_poll 0x8d18fc8d128e6807 0xfff globl hidden
scall __sys_poll 0x8d18fc8d128e6807 0xfff globl hidden
scall sys_ppoll 0xfff86da21ffff90f 0x049 globl hidden # consider INTON/INTOFF tutorial in examples/unbourne.c
scall sys_lseek 0x0c70c71de20c7008 0x03e globl hidden # netbsd+openbsd:evilpad
scall __sys_mmap 0x0c50c51dd20c5009 0x0de globl hidden # netbsd+openbsd:pad
@ -57,7 +57,7 @@ scall sys_pwrite 0x8ae8ae9dc289a812 0x044 globl hidden # a.k.a. pwrite64; netbs
scall sys_readv 0x8788788782878813 0x041 globl hidden
scall sys_writev 0x8798798792879814 0x042 globl hidden
scall sys_access 0x0210210212021015 0xfff globl hidden
scall __sys_pipe 0x02a10721e202a016 0xfff globl hidden # NOTE: pipe2() on FreeBSD; XNU is pipe(void)→eax:edx
scall __sys_pipe 0x02a10721e202a016 0x03b globl hidden # NOTE: pipe2() on FreeBSD and Linux Aarch64; XNU is pipe(void)→eax:edx
scall sys_select 0x9a184785d285d817 0xfff globl hidden
scall sys_pselect 0x9b486ea0a298a90e 0x048 globl hidden # pselect6() on gnu/systemd
scall sys_sched_yield 0x15e12a14bf25d018 0x07c globl hidden # select() on XNU (previously swtch() but removed in 12.4)
@ -68,7 +68,7 @@ scall sys_shmget 0x0e71210e7210901d 0x0c2 globl # no wrapper
scall sys_shmat 0x0e40e40e4210601e 0x0c4 globl # no wrapper
scall sys_shmctl 0x1bb128200210701f 0x0c3 globl # no wrapper
scall sys_dup 0x0290290292029020 0x017 globl hidden
scall sys_dup2 0x05a05a05a205a021 0xfff globl hidden
scall sys_dup2 0x05a05a05a205a021 0x018 globl hidden # dup3() on linux aarch64 (doesn't behave same if oldfd==newfd)
scall sys_pause 0xfffffffffffff022 0xfff globl hidden
scall sys_nanosleep 0x9ae85b8f0ffff823 0x065 globl hidden
scall __sys_clock_nanosleep 0x9ddfff8f4ffff8e6 0x073 globl hidden
@ -125,19 +125,9 @@ scall sys_ftruncate 0x8c98c99e028c984d 0x02e globl hidden # netbsd+openbsd:pad
scall sys_getcwd 0x128130146ffff04f 0x011 globl hidden
scall sys_chdir 0x00c00c00c200c050 0x031 globl hidden
scall sys_fchdir 0x00d00d00d200d051 0x032 globl hidden
scall sys_rename 0x0800800802080052 0xfff globl hidden
scall sys_mkdir 0x0880880882088053 0xfff globl hidden
scall sys_rmdir 0x0890890892089054 0xfff globl hidden
scall sys_creat 0x008fff008ffff055 0xfff globl hidden
scall sys_link 0x0090090092009056 0xfff globl hidden
scall sys_unlink 0x00a00a00a200a057 0x0b5 globl hidden
scall sys_symlink 0x0390390392039058 0xfff globl hidden
scall sys_readlink 0x03a03a03a203a059 0xfff globl hidden # usually an anti-pattern
scall sys_chmod 0x00f00f00f200f05a 0xfff globl hidden
scall sys_fchmod 0x07c07c07c207c05b 0x034 globl hidden
scall sys_chown 0x010010010201005c 0xfff globl hidden # impl. w/ fchownat() @asyncsignalsafe
scall sys_fchown 0x07b07b07b207b05d 0x037 globl hidden # @asyncsignalsafe
scall sys_lchown 0x1130fe0fe216c05e 0xfff globl hidden # impl. w/ fchownat()
scall sys_umask 0x03c03c03c203c05f 0x0a6 globl hidden
scall sys_gettimeofday 0x1a20430742074060 0x0a9 globl hidden # xnu esi/edx=0
scall sys_getrlimit 0x0c20c20c220c2061 0x0a3 globl hidden
@ -149,7 +139,6 @@ scall sys_syslog 0xfffffffffffff067 0x074 globl hidden
scall sys_getuid 0x0180180182018066 0x0ae globl hidden
scall sys_getgid 0x02f02f02f202f068 0x0b0 globl hidden
scall sys_getppid 0xfff027027202706e 0x0ad globl hidden # see sys_getpid()→edx for netbsd
scall sys_getpgrp 0x051051051205106f 0xfff globl hidden
scall sys_setsid 0x0930930932093070 0x09d globl hidden
scall sys_getsid 0x11e0ff136213607c 0x09c globl hidden
scall sys_getpgid 0x0cf0cf0cf2097079 0x09b globl hidden
@ -291,7 +280,6 @@ scall sys_mkdirat 0x1cd13e1f021db102 0x022 globl hidden
scall sys_fchownat 0x1d013b1eb21d4104 0x036 globl hidden # @asyncsignalsafe
scall sys_utime 0xfffffffffffff084 0x062 globl hidden
scall sys_utimes 0x1a404c08a208a0eb 0x058 globl hidden
scall sys_futimesat 0xffffff1eeffff105 0xfff globl hidden # @asyncsignalsafe
scall sys_futimes 0x1a704d0ce208bfff 0xfff globl hidden
scall sys_futimens 0x1d8055222fffffff 0xfff globl hidden
scall __sys_fstatat 0x1d202a22821d6106 0x04f globl hidden # a.k.a. newfstatat(); FreeBSD 12+; needs __stat2linux()