| Server IP : 88.222.222.199 / Your IP : 216.73.217.93 Web Server : LiteSpeed System : Linux id-dci-web1986.main-hosting.eu 5.14.0-611.26.1.el9_7.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Jan 29 05:24:47 EST 2026 x86_64 User : u686484674 ( 686484674) PHP Version : 8.0.30 Disable Function : system, exec, shell_exec, passthru, mysql_list_dbs, ini_alter, dl, symlink, link, chgrp, leak, popen, apache_child_terminate, virtual, mb_send_mail MySQL : OFF | cURL : ON | WGET : ON | Perl : OFF | Python : OFF | Sudo : OFF | Pkexec : OFF Directory : /./proc/thread-self/root/proc/thread-self/root/opt/golang/1.22.0/src/runtime/cgo/ |
Upload File : |
// Copyright 2015 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. #include "textflag.h" // xx_cgo_panicmem is the entrypoint for SIGSEGV as intercepted via a // mach thread port as EXC_BAD_ACCESS. As the segfault may have happened // in C code, we first need to load_g then call xx_cgo_panicmem. // // R1 - LR at moment of fault // R2 - PC at moment of fault TEXT xx_cgo_panicmem(SB),NOSPLIT|NOFRAME,$0 // If in external C code, we need to load the g register. BL runtime·load_g(SB) CMP $0, g BNE ongothread // On a foreign thread. // TODO(crawshaw): call badsignal MOVD.W $0, -16(RSP) MOVW $139, R1 MOVW R1, 8(RSP) B runtime·exit(SB) ongothread: // Trigger a SIGSEGV panic. // // The goal is to arrange the stack so it looks like the runtime // function sigpanic was called from the PC that faulted. It has // to be sigpanic, as the stack unwinding code in traceback.go // looks explicitly for it. // // To do this we call into runtime·setsigsegv, which sets the // appropriate state inside the g object. We give it the faulting // PC on the stack, then put it in the LR before calling sigpanic. // Build a 32-byte stack frame for us for this call. // Saved LR (none available) is at the bottom, // then the PC argument for setsigsegv, // then a copy of the LR for us to restore. MOVD.W $0, -32(RSP) MOVD R1, 8(RSP) MOVD R2, 16(RSP) BL runtime·setsigsegv(SB) MOVD 8(RSP), R1 MOVD 16(RSP), R2 // Build a 16-byte stack frame for the simulated // call to sigpanic, by taking 16 bytes away from the // 32-byte stack frame above. // The saved LR in this frame is the LR at time of fault, // and the LR on entry to sigpanic is the PC at time of fault. MOVD.W R1, 16(RSP) MOVD R2, R30 B runtime·sigpanic(SB)