1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jscrashformat.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,75 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef jscrashformat_h
1.11 +#define jscrashformat_h
1.12 +
1.13 +namespace js {
1.14 +namespace crash {
1.15 +
1.16 +static const int crash_cookie_len = 16;
1.17 +static const char crash_cookie[crash_cookie_len] = "*J*S*CRASHDATA*";
1.18 +
1.19 +/* These values are used for CrashHeader::id. */
1.20 +enum {
1.21 + JS_CRASH_STACK_GC = 0x400,
1.22 + JS_CRASH_STACK_ERROR = 0x401,
1.23 + JS_CRASH_RING = 0x800
1.24 +};
1.25 +
1.26 +/*
1.27 + * All the data here will be stored directly in the minidump, so we use
1.28 + * platform-independent types. We also ensure that the size of every field is a
1.29 + * multiple of 8 bytes, to guarantee that they won't be padded.
1.30 + */
1.31 +
1.32 +struct CrashHeader
1.33 +{
1.34 + char cookie[crash_cookie_len];
1.35 +
1.36 + /* id of the crash data, chosen from the enum above. */
1.37 + uint64_t id;
1.38 +
1.39 + CrashHeader(uint64_t id) : id(id) { memcpy(cookie, crash_cookie, crash_cookie_len); }
1.40 +};
1.41 +
1.42 +struct CrashRegisters
1.43 +{
1.44 + uint64_t ip, sp, bp;
1.45 +};
1.46 +
1.47 +static const int crash_buffer_size = 32 * 1024;
1.48 +
1.49 +struct CrashStack
1.50 +{
1.51 + CrashStack(uint64_t id) : header(id) {}
1.52 +
1.53 + CrashHeader header;
1.54 + uint64_t snaptime; /* Unix time when the stack was snapshotted. */
1.55 + CrashRegisters regs; /* Register contents for the snapshot. */
1.56 + uint64_t stack_base; /* Base address of stack at the time of snapshot. */
1.57 + uint64_t stack_len; /* Extent of the stack. */
1.58 + char stack[crash_buffer_size]; /* Contents of the stack. */
1.59 +};
1.60 +
1.61 +struct CrashRing
1.62 +{
1.63 + CrashRing(uint64_t id) : header(id), offset(0) { memset(buffer, 0, sizeof(buffer)); }
1.64 +
1.65 + CrashHeader header;
1.66 + uint64_t offset; /* Next byte to be written in the buffer. */
1.67 + char buffer[crash_buffer_size];
1.68 +};
1.69 +
1.70 +/* These are the tag values for each entry in the CrashRing. */
1.71 +enum {
1.72 + JS_CRASH_TAG_GC = 0x200
1.73 +};
1.74 +
1.75 +} /* namespace crash */
1.76 +} /* namespace js */
1.77 +
1.78 +#endif /* jscrashformat_h */
