1 /* $NetBSD: core_machdep.c,v 1.1 2014/08/10 05:47:37 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 34 __KERNEL_RCSID(1, "$NetBSD: core_machdep.c,v 1.1 2014/08/10 05:47:37 matt Exp $"); 35 36 #include <sys/types.h> 37 #include <sys/cpu.h> 38 #include <sys/exec.h> 39 #include <sys/core.h> 40 #include <sys/lwp.h> 41 42 #include <aarch64/frame.h> 43 #include <aarch64/locore.h> 44 #include <aarch64/pcb.h> 45 46 /* 47 * Write the machine-dependent part of a core dump. 48 */ 49 int 50 cpu_coredump(struct lwp *l, struct coredump_iostate *iocookie, 51 struct core *chdr) 52 { 53 struct coreseg cseg; 54 struct md_coredump md_core; 55 struct pcb * const pcb = lwp_getpcb(l); 56 int error; 57 58 if (iocookie == NULL) { 59 CORE_SETMAGIC(*chdr, COREMAGIC, MID_POWERPC, 0); 60 chdr->c_hdrsize = ALIGN(sizeof *chdr); 61 chdr->c_seghdrsize = ALIGN(sizeof cseg); 62 chdr->c_cpusize = sizeof md_core; 63 chdr->c_nseg++; 64 return 0; 65 } 66 67 md_core.reg = l->l_md.md_utf->tf_regs; 68 if (l == curlwp) { 69 md_core.reg.r_tpidr = reg_tpidr_el0_read(); 70 } else { 71 md_core.reg.r_tpidr = (uint64_t)(uintptr_t)l->l_private; 72 } 73 fpu_save(l); 74 if (fpu_used_p(l)) { 75 md_core.fpreg = pcb->pcb_fpregs; 76 } else { 77 memset(&md_core.fpreg, 0, sizeof(md_core.fpreg)); 78 } 79 80 CORE_SETMAGIC(cseg, CORESEGMAGIC, MID_MACHINE, CORE_CPU); 81 cseg.c_addr = 0; 82 cseg.c_size = chdr->c_cpusize; 83 84 error = coredump_write(iocookie, UIO_SYSSPACE, &cseg, 85 chdr->c_seghdrsize); 86 if (error) 87 return error; 88 89 return coredump_write(iocookie, UIO_SYSSPACE, &md_core, 90 sizeof(md_core)); 91 } 92