diff options
| -rw-r--r-- | rt/abort-linux.s | 41 | ||||
| -rw-r--r-- | rt/abort-osx.s (renamed from rt/abort.s) | 8 |
2 files changed, 45 insertions, 4 deletions
diff --git a/rt/abort-linux.s b/rt/abort-linux.s new file mode 100644 index 0000000..8ac1c02 --- /dev/null +++ b/rt/abort-linux.s @@ -0,0 +1,41 @@ +.text + +.globl _rt$abort_oob +.globl __rt$abort_oob +_rt$abort_oob: +__rt$abort_oob: + /* format pc */ + movq (%rsp),%rax + movq $15,%rdx +.loop: + movq %rax, %rcx + andq $0xf, %rcx + movb .digitchars(%rcx),%r8b + movb %r8b,.pcstr(%rdx) + subq $1, %rdx + shrq $4, %rax + jnz .loop + /* write abort message */ + movq $1, %rax /* write(fd=%rdi, msg=%rsi, len=%rdx) */ + movq $2, %rdi /* fd */ + movq $.msg, %rsi /* msg */ + movq $(.msgend-.msg), %rdx /* length */ + syscall + /* kill self */ + movq $39,%rax /* getpid */ + syscall + movq %rax, %rdi /* save pid */ + movq $62, %rax /* kill(pid=%rdi, sig=%rsi) */ + movq $6, %rsi /* kill(pid=%rdi, sig=%rsi) */ + syscall +.data +.msg: /* pc name: */ + .byte '0','x' +.pcstr: + .byte '0','0','0','0','0','0','0','0' + .byte '0','0','0','0','0','0','0','0' + .ascii ": out of bounds access\n" +.msgend: + +.digitchars: + .ascii "0123456789abcdef" diff --git a/rt/abort.s b/rt/abort-osx.s index 9c44ec7..188fda5 100644 --- a/rt/abort.s +++ b/rt/abort-osx.s @@ -18,17 +18,17 @@ __rt$abort_oob: shrq $4, %rax jnz .loop /* write abort message */ - movq $1, %rax /* write(fd=%rdi, msg=%rsi, len=%rdx) */ + movq $0x2000004, %rax /* write(fd=%rdi, msg=%rsi, len=%rdx) */ movq $2, %rdi /* fd */ leaq .msg(%rip), %rsi /* msg */ movq $(.msgend-.msg), %rdx /* length */ syscall /* kill self */ - movq $39,%rax /* getpid */ + movq $0x2000014,%rax /* getpid */ syscall movq %rax, %rdi /* save pid */ - movq $62, %rax /* kill(pid=%rdi, sig=%rsi) */ - movq $6, %rsi /* kill(pid=%rdi, sig=%rsi) */ + movq $0x2000025, %rax /* kill(pid=%rdi, sig=%rsi) */ + movq $6, %rsi syscall .data .msg: /* pc name: */ |