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ruby--ruby/vm_dump.c
naruse 1d3665fd0d * vm_dump.c (backtrace): use rip in the saved context for the case 
the SIGSEGV is received when the process is in userland.
  Note that ip in the stack should be used if the signal is received
  when it is in kernel (when it is calling syscall) [Bug #12711]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56030 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-08-29 18:43:17 +00:00

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/**********************************************************************
vm_dump.c -
$Author$
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#include "internal.h"
#include "addr2line.h"
#include "vm_core.h"
#include "iseq.h"
/* see vm_insnhelper.h for the values */
#ifndef VMDEBUG
#define VMDEBUG 0
#endif
#define MAX_POSBUF 128
#define VM_CFP_CNT(th, cfp) \
((rb_control_frame_t *)((th)->stack + (th)->stack_size) - (rb_control_frame_t *)(cfp))
static void
control_frame_dump(rb_thread_t *th, rb_control_frame_t *cfp)
{
ptrdiff_t pc = -1;
ptrdiff_t ep = cfp->ep - th->stack;
char ep_in_heap = ' ';
char posbuf[MAX_POSBUF+1];
int line = 0;
const char *magic, *iseq_name = "-", *selfstr = "-", *biseq_name = "-";
VALUE tmp;
const rb_callable_method_entry_t *me;
if (ep < 0 || (size_t)ep > th->stack_size) {
ep = (ptrdiff_t)cfp->ep;
ep_in_heap = 'p';
}
switch (VM_FRAME_TYPE(cfp)) {
case VM_FRAME_MAGIC_TOP:
magic = "TOP";
break;
case VM_FRAME_MAGIC_METHOD:
magic = "METHOD";
break;
case VM_FRAME_MAGIC_CLASS:
magic = "CLASS";
break;
case VM_FRAME_MAGIC_BLOCK:
magic = "BLOCK";
break;
case VM_FRAME_MAGIC_CFUNC:
magic = "CFUNC";
break;
case VM_FRAME_MAGIC_PROC:
magic = "PROC";
break;
case VM_FRAME_MAGIC_LAMBDA:
magic = "LAMBDA";
break;
case VM_FRAME_MAGIC_IFUNC:
magic = "IFUNC";
break;
case VM_FRAME_MAGIC_EVAL:
magic = "EVAL";
break;
case VM_FRAME_MAGIC_RESCUE:
magic = "RESCUE";
break;
case 0:
magic = "------";
break;
default:
magic = "(none)";
break;
}
if (0) {
tmp = rb_inspect(cfp->self);
selfstr = StringValueCStr(tmp);
}
else {
selfstr = "";
}
if (cfp->iseq != 0) {
#define RUBY_VM_IFUNC_P(ptr) (RB_TYPE_P((VALUE)(ptr), T_IMEMO) && imemo_type((VALUE)ptr) == imemo_ifunc)
if (RUBY_VM_IFUNC_P(cfp->iseq)) {
iseq_name = "<ifunc>";
}
else if (SYMBOL_P(cfp->iseq)) {
tmp = rb_sym2str((VALUE)cfp->iseq);
iseq_name = RSTRING_PTR(tmp);
snprintf(posbuf, MAX_POSBUF, ":%s", iseq_name);
line = -1;
}
else {
pc = cfp->pc - cfp->iseq->body->iseq_encoded;
iseq_name = RSTRING_PTR(cfp->iseq->body->location.label);
line = rb_vm_get_sourceline(cfp);
if (line) {
snprintf(posbuf, MAX_POSBUF, "%s:%d", RSTRING_PTR(cfp->iseq->body->location.path), line);
}
}
}
else if ((me = rb_vm_frame_method_entry(cfp)) != NULL) {
iseq_name = rb_id2name(me->def->original_id);
snprintf(posbuf, MAX_POSBUF, ":%s", iseq_name);
line = -1;
}
fprintf(stderr, "c:%04"PRIdPTRDIFF" ",
((rb_control_frame_t *)(th->stack + th->stack_size) - cfp));
if (pc == -1) {
fprintf(stderr, "p:---- ");
}
else {
fprintf(stderr, "p:%04"PRIdPTRDIFF" ", pc);
}
fprintf(stderr, "s:%04"PRIdPTRDIFF" ", cfp->sp - th->stack);
fprintf(stderr, ep_in_heap == ' ' ? "e:%06"PRIdPTRDIFF" " : "E:%06"PRIxPTRDIFF" ", ep % 10000);
fprintf(stderr, "%-6s", magic);
if (line) {
fprintf(stderr, " %s", posbuf);
}
if (VM_FRAME_FINISHED_P(cfp)) {
fprintf(stderr, " [FINISH]");
}
if (0) {
fprintf(stderr, " \t");
fprintf(stderr, "iseq: %-24s ", iseq_name);
fprintf(stderr, "self: %-24s ", selfstr);
fprintf(stderr, "%-1s ", biseq_name);
}
fprintf(stderr, "\n");
}
void
rb_vmdebug_stack_dump_raw(rb_thread_t *th, rb_control_frame_t *cfp)
{
#if 0
VALUE *sp = cfp->sp, *ep = cfp->ep;
VALUE *p, *st, *t;
fprintf(stderr, "-- stack frame ------------\n");
for (p = st = th->stack; p < sp; p++) {
fprintf(stderr, "%04ld (%p): %08"PRIxVALUE, (long)(p - st), p, *p);
t = (VALUE *)*p;
if (th->stack <= t && t < sp) {
fprintf(stderr, " (= %ld)", (long)((VALUE *)GC_GUARDED_PTR_REF(t) - th->stack));
}
if (p == ep)
fprintf(stderr, " <- ep");
fprintf(stderr, "\n");
}
#endif
fprintf(stderr, "-- Control frame information "
"-----------------------------------------------\n");
while ((void *)cfp < (void *)(th->stack + th->stack_size)) {
control_frame_dump(th, cfp);
cfp++;
}
fprintf(stderr, "\n");
}
void
rb_vmdebug_stack_dump_raw_current(void)
{
rb_thread_t *th = GET_THREAD();
rb_vmdebug_stack_dump_raw(th, th->cfp);
}
void
rb_vmdebug_env_dump_raw(const rb_env_t *env, const VALUE *ep)
{
unsigned int i;
fprintf(stderr, "-- env --------------------\n");
while (env) {
fprintf(stderr, "--\n");
for (i = 0; i < env->env_size; i++) {
fprintf(stderr, "%04d: %08"PRIxVALUE" (%p)", i, env->env[i], (void *)&env->env[i]);
if (&env->env[i] == ep) fprintf(stderr, " <- ep");
fprintf(stderr, "\n");
}
env = rb_vm_env_prev_env(env);
}
fprintf(stderr, "---------------------------\n");
}
void
rb_vmdebug_proc_dump_raw(rb_proc_t *proc)
{
const rb_env_t *env;
char *selfstr;
VALUE val = rb_inspect(vm_block_self(&proc->block));
selfstr = StringValueCStr(val);
fprintf(stderr, "-- proc -------------------\n");
fprintf(stderr, "self: %s\n", selfstr);
env = VM_ENV_ENVVAL_PTR(vm_block_ep(&proc->block));
rb_vmdebug_env_dump_raw(env, vm_block_ep(&proc->block));
}
void
rb_vmdebug_stack_dump_th(VALUE thval)
{
rb_thread_t *th;
GetThreadPtr(thval, th);
rb_vmdebug_stack_dump_raw(th, th->cfp);
}
#if VMDEBUG > 2
/* copy from vm.c */
static VALUE *
vm_base_ptr(rb_control_frame_t *cfp)
{
rb_control_frame_t *prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
VALUE *bp = prev_cfp->sp + iseq->body->local_table_size + VM_ENV_DATA_SIZE;
if (cfp->iseq->body->type == ISEQ_TYPE_METHOD) {
bp += 1;
}
return bp;
}
static void
vm_stack_dump_each(rb_thread_t *th, rb_control_frame_t *cfp)
{
int i, argc = 0, local_size = 0;
VALUE rstr;
VALUE *sp = cfp->sp;
VALUE *ep = cfp->ep;
if (VM_FRAME_RUBYFRAME_P(cfp)) {
rb_iseq_t *iseq = cfp->iseq;
argc = iseq->body->param.lead_num;
local_size = iseq->body->local_size;
}
/* stack trace header */
if (VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_METHOD||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_TOP ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_BLOCK ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CLASS ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_PROC ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_LAMBDA||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CFUNC ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_IFUNC ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_EVAL ||
VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_RESCUE)
{
VALUE *ptr = ep - local_size;
control_frame_dump(th, cfp);
for (i = 0; i < argc; i++) {
rstr = rb_inspect(*ptr);
fprintf(stderr, " arg %2d: %8s (%p)\n", i, StringValueCStr(rstr),
(void *)ptr++);
}
for (; i < local_size - 1; i++) {
rstr = rb_inspect(*ptr);
fprintf(stderr, " local %2d: %8s (%p)\n", i, StringValueCStr(rstr),
(void *)ptr++);
}
ptr = vm_base_ptr(cfp);
for (; ptr < sp; ptr++, i++) {
if (*ptr == Qundef) {
rstr = rb_str_new2("undef");
}
else {
rstr = rb_inspect(*ptr);
}
fprintf(stderr, " stack %2d: %8s (%"PRIdPTRDIFF")\n", i, StringValueCStr(rstr),
(ptr - th->stack));
}
}
else if (VM_FRAME_FINISHED_P(cfp)) {
if ((th)->stack + (th)->stack_size > (VALUE *)(cfp + 1)) {
vm_stack_dump_each(th, cfp + 1);
}
else {
/* SDR(); */
}
}
else {
rb_bug("unsupport frame type: %08lx", VM_FRAME_TYPE(cfp));
}
}
#endif
void
rb_vmdebug_debug_print_register(rb_thread_t *th)
{
rb_control_frame_t *cfp = th->cfp;
ptrdiff_t pc = -1;
ptrdiff_t ep = cfp->ep - th->stack;
ptrdiff_t cfpi;
if (VM_FRAME_RUBYFRAME_P(cfp)) {
pc = cfp->pc - cfp->iseq->body->iseq_encoded;
}
if (ep < 0 || (size_t)ep > th->stack_size) {
ep = -1;
}
cfpi = ((rb_control_frame_t *)(th->stack + th->stack_size)) - cfp;
fprintf(stderr, " [PC] %04"PRIdPTRDIFF", [SP] %04"PRIdPTRDIFF", [EP] %04"PRIdPTRDIFF", [CFP] %04"PRIdPTRDIFF"\n",
pc, (cfp->sp - th->stack), ep, cfpi);
}
void
rb_vmdebug_thread_dump_regs(VALUE thval)
{
rb_thread_t *th;
GetThreadPtr(thval, th);
rb_vmdebug_debug_print_register(th);
}
void
rb_vmdebug_debug_print_pre(rb_thread_t *th, rb_control_frame_t *cfp,VALUE *_pc)
{
const rb_iseq_t *iseq = cfp->iseq;
if (iseq != 0) {
ptrdiff_t pc = _pc - iseq->body->iseq_encoded;
int i;
for (i=0; i<(int)VM_CFP_CNT(th, cfp); i++) {
printf(" ");
}
printf("| ");
if(0)printf("[%03ld] ", (long)(cfp->sp - th->stack));
/* printf("%3"PRIdPTRDIFF" ", VM_CFP_CNT(th, cfp)); */
if (pc >= 0) {
const VALUE *iseq_original = rb_iseq_original_iseq((rb_iseq_t *)iseq);
rb_iseq_disasm_insn(0, iseq_original, (size_t)pc, iseq, 0);
}
}
#if VMDEBUG > 3
fprintf(stderr, " (1)");
rb_vmdebug_debug_print_register(th);
#endif
}
void
rb_vmdebug_debug_print_post(rb_thread_t *th, rb_control_frame_t *cfp
#if OPT_STACK_CACHING
, VALUE reg_a, VALUE reg_b
#endif
)
{
#if VMDEBUG > 9
SDR2(cfp);
#endif
#if VMDEBUG > 3
fprintf(stderr, " (2)");
rb_vmdebug_debug_print_register(th);
#endif
/* stack_dump_raw(th, cfp); */
#if VMDEBUG > 2
/* stack_dump_thobj(th); */
vm_stack_dump_each(th, th->cfp);
#if OPT_STACK_CACHING
{
VALUE rstr;
rstr = rb_inspect(reg_a);
fprintf(stderr, " sc reg A: %s\n", StringValueCStr(rstr));
rstr = rb_inspect(reg_b);
fprintf(stderr, " sc reg B: %s\n", StringValueCStr(rstr));
}
#endif
printf
("--------------------------------------------------------------\n");
#endif
}
VALUE
rb_vmdebug_thread_dump_state(VALUE self)
{
rb_thread_t *th;
rb_control_frame_t *cfp;
GetThreadPtr(self, th);
cfp = th->cfp;
fprintf(stderr, "Thread state dump:\n");
fprintf(stderr, "pc : %p, sp : %p\n", (void *)cfp->pc, (void *)cfp->sp);
fprintf(stderr, "cfp: %p, ep : %p\n", (void *)cfp, (void *)cfp->ep);
return Qnil;
}
#if defined(HAVE_BACKTRACE)
# ifdef HAVE_LIBUNWIND
# undef backtrace
# define backtrace unw_backtrace
# elif defined(__APPLE__) && defined(__x86_64__) && defined(HAVE_LIBUNWIND_H)
# define UNW_LOCAL_ONLY
# include <libunwind.h>
# undef backtrace
int
backtrace(void **trace, int size)
{
unw_cursor_t cursor; unw_context_t uc;
unw_word_t ip;
int n = 0;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
while (unw_step(&cursor) > 0) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
trace[n++] = (void *)ip;
{
char buf[256];
unw_get_proc_name(&cursor, buf, 256, &ip);
if (strncmp("_sigtramp", buf, sizeof("_sigtramp")) == 0) {
goto darwin_sigtramp;
}
}
}
return n;
darwin_sigtramp:
/* darwin's bundled libunwind doesn't support signal trampoline */
{
ucontext_t *uctx;
/* get _sigtramp's ucontext_t and set values to cursor
* http://www.opensource.apple.com/source/Libc/Libc-825.25/i386/sys/_sigtramp.s
* http://www.opensource.apple.com/source/libunwind/libunwind-35.1/src/unw_getcontext.s
*/
unw_get_reg(&cursor, UNW_X86_64_RBX, &ip);
uctx = (ucontext_t *)ip;
unw_set_reg(&cursor, UNW_X86_64_RAX, uctx->uc_mcontext->__ss.__rax);
unw_set_reg(&cursor, UNW_X86_64_RBX, uctx->uc_mcontext->__ss.__rbx);
unw_set_reg(&cursor, UNW_X86_64_RCX, uctx->uc_mcontext->__ss.__rcx);
unw_set_reg(&cursor, UNW_X86_64_RDX, uctx->uc_mcontext->__ss.__rdx);
unw_set_reg(&cursor, UNW_X86_64_RDI, uctx->uc_mcontext->__ss.__rdi);
unw_set_reg(&cursor, UNW_X86_64_RSI, uctx->uc_mcontext->__ss.__rsi);
unw_set_reg(&cursor, UNW_X86_64_RBP, uctx->uc_mcontext->__ss.__rbp);
unw_set_reg(&cursor, UNW_X86_64_RSP, 8+(uctx->uc_mcontext->__ss.__rsp));
unw_set_reg(&cursor, UNW_X86_64_R8, uctx->uc_mcontext->__ss.__r8);
unw_set_reg(&cursor, UNW_X86_64_R9, uctx->uc_mcontext->__ss.__r9);
unw_set_reg(&cursor, UNW_X86_64_R10, uctx->uc_mcontext->__ss.__r10);
unw_set_reg(&cursor, UNW_X86_64_R11, uctx->uc_mcontext->__ss.__r11);
unw_set_reg(&cursor, UNW_X86_64_R12, uctx->uc_mcontext->__ss.__r12);
unw_set_reg(&cursor, UNW_X86_64_R13, uctx->uc_mcontext->__ss.__r13);
unw_set_reg(&cursor, UNW_X86_64_R14, uctx->uc_mcontext->__ss.__r14);
unw_set_reg(&cursor, UNW_X86_64_R15, uctx->uc_mcontext->__ss.__r15);
ip = *(unw_word_t*)uctx->uc_mcontext->__ss.__rsp;
if (!ip) { /* signal received in syscall */
ip = uctx->uc_mcontext->__ss.__rip;
}
unw_set_reg(&cursor, UNW_REG_IP, ip);
trace[n++] = (void *)uctx->uc_mcontext->__ss.__rip;
trace[n++] = (void *)ip;
}
while (unw_step(&cursor) > 0) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
trace[n++] = (void *)ip;
}
return n;
}
# elif defined(BROKEN_BACKTRACE)
# undef HAVE_BACKTRACE
# define HAVE_BACKTRACE 0
# endif
#else
# define HAVE_BACKTRACE 0
#endif
#if HAVE_BACKTRACE
# include <execinfo.h>
#elif defined(_WIN32)
# include <imagehlp.h>
# ifndef SYMOPT_DEBUG
# define SYMOPT_DEBUG 0x80000000
# endif
# ifndef MAX_SYM_NAME
# define MAX_SYM_NAME 2000
typedef struct {
DWORD64 Offset;
WORD Segment;
ADDRESS_MODE Mode;
} ADDRESS64;
typedef struct {
DWORD64 Thread;
DWORD ThCallbackStack;
DWORD ThCallbackBStore;
DWORD NextCallback;
DWORD FramePointer;
DWORD64 KiCallUserMode;
DWORD64 KeUserCallbackDispatcher;
DWORD64 SystemRangeStart;
DWORD64 KiUserExceptionDispatcher;
DWORD64 StackBase;
DWORD64 StackLimit;
DWORD64 Reserved[5];
} KDHELP64;
typedef struct {
ADDRESS64 AddrPC;
ADDRESS64 AddrReturn;
ADDRESS64 AddrFrame;
ADDRESS64 AddrStack;
ADDRESS64 AddrBStore;
void *FuncTableEntry;
DWORD64 Params[4];
BOOL Far;
BOOL Virtual;
DWORD64 Reserved[3];
KDHELP64 KdHelp;
} STACKFRAME64;
typedef struct {
ULONG SizeOfStruct;
ULONG TypeIndex;
ULONG64 Reserved[2];
ULONG Index;
ULONG Size;
ULONG64 ModBase;
ULONG Flags;
ULONG64 Value;
ULONG64 Address;
ULONG Register;
ULONG Scope;
ULONG Tag;
ULONG NameLen;
ULONG MaxNameLen;
char Name[1];
} SYMBOL_INFO;
typedef struct {
DWORD SizeOfStruct;
void *Key;
DWORD LineNumber;
char *FileName;
DWORD64 Address;
} IMAGEHLP_LINE64;
typedef void *PREAD_PROCESS_MEMORY_ROUTINE64;
typedef void *PFUNCTION_TABLE_ACCESS_ROUTINE64;
typedef void *PGET_MODULE_BASE_ROUTINE64;
typedef void *PTRANSLATE_ADDRESS_ROUTINE64;
# endif
static void
dump_thread(void *arg)
{
HANDLE dbghelp;
BOOL (WINAPI *pSymInitialize)(HANDLE, const char *, BOOL);
BOOL (WINAPI *pSymCleanup)(HANDLE);
BOOL (WINAPI *pStackWalk64)(DWORD, HANDLE, HANDLE, STACKFRAME64 *, void *, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64);
DWORD64 (WINAPI *pSymGetModuleBase64)(HANDLE, DWORD64);
BOOL (WINAPI *pSymFromAddr)(HANDLE, DWORD64, DWORD64 *, SYMBOL_INFO *);
BOOL (WINAPI *pSymGetLineFromAddr64)(HANDLE, DWORD64, DWORD *, IMAGEHLP_LINE64 *);
HANDLE (WINAPI *pOpenThread)(DWORD, BOOL, DWORD);
DWORD tid = *(DWORD *)arg;
HANDLE ph;
HANDLE th;
dbghelp = LoadLibrary("dbghelp.dll");
if (!dbghelp) return;
pSymInitialize = (BOOL (WINAPI *)(HANDLE, const char *, BOOL))GetProcAddress(dbghelp, "SymInitialize");
pSymCleanup = (BOOL (WINAPI *)(HANDLE))GetProcAddress(dbghelp, "SymCleanup");
pStackWalk64 = (BOOL (WINAPI *)(DWORD, HANDLE, HANDLE, STACKFRAME64 *, void *, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64))GetProcAddress(dbghelp, "StackWalk64");
pSymGetModuleBase64 = (DWORD64 (WINAPI *)(HANDLE, DWORD64))GetProcAddress(dbghelp, "SymGetModuleBase64");
pSymFromAddr = (BOOL (WINAPI *)(HANDLE, DWORD64, DWORD64 *, SYMBOL_INFO *))GetProcAddress(dbghelp, "SymFromAddr");
pSymGetLineFromAddr64 = (BOOL (WINAPI *)(HANDLE, DWORD64, DWORD *, IMAGEHLP_LINE64 *))GetProcAddress(dbghelp, "SymGetLineFromAddr64");
pOpenThread = (HANDLE (WINAPI *)(DWORD, BOOL, DWORD))GetProcAddress(GetModuleHandle("kernel32.dll"), "OpenThread");
if (pSymInitialize && pSymCleanup && pStackWalk64 && pSymGetModuleBase64 &&
pSymFromAddr && pSymGetLineFromAddr64 && pOpenThread) {
SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS | SYMOPT_DEBUG | SYMOPT_LOAD_LINES);
ph = GetCurrentProcess();
pSymInitialize(ph, NULL, TRUE);
th = pOpenThread(THREAD_SUSPEND_RESUME|THREAD_GET_CONTEXT, FALSE, tid);
if (th) {
if (SuspendThread(th) != (DWORD)-1) {
CONTEXT context;
memset(&context, 0, sizeof(context));
context.ContextFlags = CONTEXT_FULL;
if (GetThreadContext(th, &context)) {
char libpath[MAX_PATH];
char buf[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
SYMBOL_INFO *info = (SYMBOL_INFO *)buf;
DWORD mac;
STACKFRAME64 frame;
memset(&frame, 0, sizeof(frame));
#if defined(_M_AMD64) || defined(__x86_64__)
mac = IMAGE_FILE_MACHINE_AMD64;
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrPC.Offset = context.Rip;
frame.AddrFrame.Mode = AddrModeFlat;
frame.AddrFrame.Offset = context.Rbp;
frame.AddrStack.Mode = AddrModeFlat;
frame.AddrStack.Offset = context.Rsp;
#elif defined(_M_IA64) || defined(__ia64__)
mac = IMAGE_FILE_MACHINE_IA64;
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrPC.Offset = context.StIIP;
frame.AddrBStore.Mode = AddrModeFlat;
frame.AddrBStore.Offset = context.RsBSP;
frame.AddrStack.Mode = AddrModeFlat;
frame.AddrStack.Offset = context.IntSp;
#else /* i386 */
mac = IMAGE_FILE_MACHINE_I386;
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrPC.Offset = context.Eip;
frame.AddrFrame.Mode = AddrModeFlat;
frame.AddrFrame.Offset = context.Ebp;
frame.AddrStack.Mode = AddrModeFlat;
frame.AddrStack.Offset = context.Esp;
#endif
while (pStackWalk64(mac, ph, th, &frame, &context, NULL,
NULL, NULL, NULL)) {
DWORD64 addr = frame.AddrPC.Offset;
IMAGEHLP_LINE64 line;
DWORD64 displacement;
DWORD tmp;
if (addr == frame.AddrReturn.Offset || addr == 0 ||
frame.AddrReturn.Offset == 0)
break;
memset(buf, 0, sizeof(buf));
info->SizeOfStruct = sizeof(SYMBOL_INFO);
info->MaxNameLen = MAX_SYM_NAME;
if (pSymFromAddr(ph, addr, &displacement, info)) {
if (GetModuleFileName((HANDLE)(uintptr_t)pSymGetModuleBase64(ph, addr), libpath, sizeof(libpath)))
fprintf(stderr, "%s", libpath);
fprintf(stderr, "(%s+0x%I64x)",
info->Name, displacement);
}
fprintf(stderr, " [0x%p]", (void *)(VALUE)addr);
memset(&line, 0, sizeof(line));
line.SizeOfStruct = sizeof(line);
if (pSymGetLineFromAddr64(ph, addr, &tmp, &line))
fprintf(stderr, " %s:%lu", line.FileName, line.LineNumber);
fprintf(stderr, "\n");
}
}
ResumeThread(th);
}
CloseHandle(th);
}
pSymCleanup(ph);
}
FreeLibrary(dbghelp);
}
#endif
void
rb_print_backtrace(void)
{
#if HAVE_BACKTRACE
#define MAX_NATIVE_TRACE 1024
static void *trace[MAX_NATIVE_TRACE];
int n = (int)backtrace(trace, MAX_NATIVE_TRACE);
#if defined(USE_ELF) && defined(HAVE_DLADDR) && !defined(__sparc)
rb_dump_backtrace_with_lines(n, trace);
#else
char **syms = backtrace_symbols(trace, n);
if (syms) {
int i;
for (i=0; i<n; i++) {
fprintf(stderr, "%s\n", syms[i]);
}
free(syms);
}
#endif
#elif defined(_WIN32)
DWORD tid = GetCurrentThreadId();
HANDLE th = (HANDLE)_beginthread(dump_thread, 0, &tid);
if (th != (HANDLE)-1)
WaitForSingleObject(th, INFINITE);
#endif
}
#ifdef HAVE_LIBPROCSTAT
#include <sys/user.h>
#include <sys/sysctl.h>
#include <sys/param.h>
#include <libprocstat.h>
# ifndef KVME_TYPE_MGTDEVICE
# define KVME_TYPE_MGTDEVICE 8
# endif
void
procstat_vm(struct procstat *procstat, struct kinfo_proc *kipp)
{
struct kinfo_vmentry *freep, *kve;
int ptrwidth;
unsigned int i, cnt;
const char *str;
#ifdef __x86_64__
ptrwidth = 14;
#else
ptrwidth = 2*sizeof(void *) + 2;
#endif
fprintf(stderr, "%*s %*s %3s %4s %4s %3s %3s %4s %-2s %-s\n",
ptrwidth, "START", ptrwidth, "END", "PRT", "RES",
"PRES", "REF", "SHD", "FL", "TP", "PATH");
#ifdef HAVE_PROCSTAT_GETVMMAP
freep = procstat_getvmmap(procstat, kipp, &cnt);
#else
freep = kinfo_getvmmap(kipp->ki_pid, &cnt);
#endif
if (freep == NULL)
return;
for (i = 0; i < cnt; i++) {
kve = &freep[i];
fprintf(stderr, "%#*jx ", ptrwidth, (uintmax_t)kve->kve_start);
fprintf(stderr, "%#*jx ", ptrwidth, (uintmax_t)kve->kve_end);
fprintf(stderr, "%s", kve->kve_protection & KVME_PROT_READ ? "r" : "-");
fprintf(stderr, "%s", kve->kve_protection & KVME_PROT_WRITE ? "w" : "-");
fprintf(stderr, "%s ", kve->kve_protection & KVME_PROT_EXEC ? "x" : "-");
fprintf(stderr, "%4d ", kve->kve_resident);
fprintf(stderr, "%4d ", kve->kve_private_resident);
fprintf(stderr, "%3d ", kve->kve_ref_count);
fprintf(stderr, "%3d ", kve->kve_shadow_count);
fprintf(stderr, "%-1s", kve->kve_flags & KVME_FLAG_COW ? "C" : "-");
fprintf(stderr, "%-1s", kve->kve_flags & KVME_FLAG_NEEDS_COPY ? "N" :
"-");
fprintf(stderr, "%-1s", kve->kve_flags & KVME_FLAG_SUPER ? "S" : "-");
fprintf(stderr, "%-1s ", kve->kve_flags & KVME_FLAG_GROWS_UP ? "U" :
kve->kve_flags & KVME_FLAG_GROWS_DOWN ? "D" : "-");
switch (kve->kve_type) {
case KVME_TYPE_NONE:
str = "--";
break;
case KVME_TYPE_DEFAULT:
str = "df";
break;
case KVME_TYPE_VNODE:
str = "vn";
break;
case KVME_TYPE_SWAP:
str = "sw";
break;
case KVME_TYPE_DEVICE:
str = "dv";
break;
case KVME_TYPE_PHYS:
str = "ph";
break;
case KVME_TYPE_DEAD:
str = "dd";
break;
case KVME_TYPE_SG:
str = "sg";
break;
case KVME_TYPE_MGTDEVICE:
str = "md";
break;
case KVME_TYPE_UNKNOWN:
default:
str = "??";
break;
}
fprintf(stderr, "%-2s ", str);
fprintf(stderr, "%-s\n", kve->kve_path);
}
free(freep);
}
#endif
#if defined __linux__
# if defined __x86_64__ || defined __i386__
# define HAVE_PRINT_MACHINE_REGISTERS 1
# endif
#elif defined __APPLE__
# if defined __x86_64__ || defined __i386__
# define HAVE_PRINT_MACHINE_REGISTERS 1
# endif
#endif
#ifdef HAVE_PRINT_MACHINE_REGISTERS
static int
print_machine_register(size_t reg, const char *reg_name, int col_count, int max_col)
{
int ret;
char buf[64];
#ifdef __LP64__
ret = snprintf(buf, sizeof(buf), " %3.3s: 0x%016zx", reg_name, reg);
#else
ret = snprintf(buf, sizeof(buf), " %3.3s: 0x%08zx", reg_name, reg);
#endif
if (col_count + ret > max_col) {
fputs("\n", stderr);
col_count = 0;
}
col_count += ret;
fputs(buf, stderr);
return col_count;
}
# ifdef __linux__
# define dump_machine_register(reg) (col_count = print_machine_register(mctx->gregs[REG_##reg], #reg, col_count, 80))
# elif defined __APPLE__
# define dump_machine_register(reg) (col_count = print_machine_register(mctx->__ss.__##reg, #reg, col_count, 80))
# endif
static void
rb_dump_machine_register(const ucontext_t *ctx)
{
int col_count = 0;
if (!ctx) return;
fprintf(stderr, "-- Machine register context "
"------------------------------------------------\n");
# if defined __linux__
{
const mcontext_t *const mctx = &ctx->uc_mcontext;
# if defined __x86_64__
dump_machine_register(RIP);
dump_machine_register(RBP);
dump_machine_register(RSP);
dump_machine_register(RAX);
dump_machine_register(RBX);
dump_machine_register(RCX);
dump_machine_register(RDX);
dump_machine_register(RDI);
dump_machine_register(RSI);
dump_machine_register(R8);
dump_machine_register(R9);
dump_machine_register(R10);
dump_machine_register(R11);
dump_machine_register(R12);
dump_machine_register(R13);
dump_machine_register(R14);
dump_machine_register(R15);
dump_machine_register(EFL);
# elif defined __i386__
dump_machine_register(GS);
dump_machine_register(FS);
dump_machine_register(ES);
dump_machine_register(DS);
dump_machine_register(EDI);
dump_machine_register(ESI);
dump_machine_register(EBP);
dump_machine_register(ESP);
dump_machine_register(EBX);
dump_machine_register(EDX);
dump_machine_register(ECX);
dump_machine_register(EAX);
dump_machine_register(TRAPNO);
dump_machine_register(ERR);
dump_machine_register(EIP);
dump_machine_register(CS);
dump_machine_register(EFL);
dump_machine_register(UESP);
dump_machine_register(SS);
# endif
}
# elif defined __APPLE__
{
const mcontext_t mctx = ctx->uc_mcontext;
# if defined __x86_64__
dump_machine_register(rax);
dump_machine_register(rbx);
dump_machine_register(rcx);
dump_machine_register(rdx);
dump_machine_register(rdi);
dump_machine_register(rsi);
dump_machine_register(rbp);
dump_machine_register(rsp);
dump_machine_register(r8);
dump_machine_register(r9);
dump_machine_register(r10);
dump_machine_register(r11);
dump_machine_register(r12);
dump_machine_register(r13);
dump_machine_register(r14);
dump_machine_register(r15);
dump_machine_register(rip);
dump_machine_register(rflags);
# elif defined __i386__
dump_machine_register(eax);
dump_machine_register(ebx);
dump_machine_register(ecx);
dump_machine_register(edx);
dump_machine_register(edi);
dump_machine_register(esi);
dump_machine_register(ebp);
dump_machine_register(esp);
dump_machine_register(ss);
dump_machine_register(eflags);
dump_machine_register(eip);
dump_machine_register(cs);
dump_machine_register(ds);
dump_machine_register(es);
dump_machine_register(fs);
dump_machine_register(gs);
# endif
}
# endif
fprintf(stderr, "\n\n");
}
#else
# define rb_dump_machine_register(ctx) ((void)0)
#endif /* HAVE_PRINT_MACHINE_REGISTERS */
static void
preface_dump(void)
{
#if defined __APPLE__
static const char msg[] = ""
"-- Crash Report log information "
"--------------------------------------------\n"
" See Crash Report log file under the one of following:\n"
" * ~/Library/Logs/CrashReporter\n"
" * /Library/Logs/CrashReporter\n"
" * ~/Library/Logs/DiagnosticReports\n"
" * /Library/Logs/DiagnosticReports\n"
" for more details.\n"
"Don't forget to include the above Crash Report log file in bug reports.\n"
"\n";
const char *const endmsg = msg + sizeof(msg) - 1;
const char *p = msg;
#define RED "\033[;31;1;7m"
#define GREEN "\033[;32;7m"
#define RESET "\033[m"
if (isatty(fileno(stderr))) {
const char *e = strchr(p, '\n');
const int w = (int)(e - p);
do {
int i = (int)(e - p);
fputs(*p == ' ' ? GREEN : RED, stderr);
fwrite(p, 1, e - p, stderr);
for (; i < w; ++i) fputc(' ', stderr);
fputs(RESET, stderr);
fputc('\n', stderr);
} while ((p = e + 1) < endmsg && (e = strchr(p, '\n')) != 0 && e > p + 1);
}
fwrite(p, 1, endmsg - p, stderr);
#endif
}
void
rb_vm_bugreport(const void *ctx)
{
#ifdef __linux__
# define PROC_MAPS_NAME "/proc/self/maps"
#endif
#ifdef PROC_MAPS_NAME
enum {other_runtime_info = 1};
#else
enum {other_runtime_info = 0};
#endif
const rb_vm_t *const vm = GET_VM();
preface_dump();
if (vm) {
SDR();
rb_backtrace_print_as_bugreport();
fputs("\n", stderr);
}
rb_dump_machine_register(ctx);
#if HAVE_BACKTRACE || defined(_WIN32)
fprintf(stderr, "-- C level backtrace information "
"-------------------------------------------\n");
rb_print_backtrace();
fprintf(stderr, "\n");
#endif /* HAVE_BACKTRACE */
if (other_runtime_info || vm) {
fprintf(stderr, "-- Other runtime information "
"-----------------------------------------------\n\n");
}
if (vm) {
int i;
VALUE name;
long len;
const int max_name_length = 1024;
# define LIMITED_NAME_LENGTH(s) \
(((len = RSTRING_LEN(s)) > max_name_length) ? max_name_length : (int)len)
name = vm->progname;
fprintf(stderr, "* Loaded script: %.*s\n",
LIMITED_NAME_LENGTH(name), RSTRING_PTR(name));
fprintf(stderr, "\n");
fprintf(stderr, "* Loaded features:\n\n");
for (i=0; i<RARRAY_LEN(vm->loaded_features); i++) {
name = RARRAY_AREF(vm->loaded_features, i);
if (RB_TYPE_P(name, T_STRING)) {
fprintf(stderr, " %4d %.*s\n", i,
LIMITED_NAME_LENGTH(name), RSTRING_PTR(name));
}
else if (RB_TYPE_P(name, T_CLASS) || RB_TYPE_P(name, T_MODULE)) {
const char *const type = RB_TYPE_P(name, T_CLASS) ?
"class" : "module";
name = rb_search_class_path(rb_class_real(name));
if (!RB_TYPE_P(name, T_STRING)) {
fprintf(stderr, " %4d %s:<unnamed>\n", i, type);
continue;
}
fprintf(stderr, " %4d %s:%.*s\n", i, type,
LIMITED_NAME_LENGTH(name), RSTRING_PTR(name));
}
else {
VALUE klass = rb_search_class_path(rb_obj_class(name));
if (!RB_TYPE_P(klass, T_STRING)) {
fprintf(stderr, " %4d #<%p:%p>\n", i,
(void *)CLASS_OF(name), (void *)name);
continue;
}
fprintf(stderr, " %4d #<%.*s:%p>\n", i,
LIMITED_NAME_LENGTH(klass), RSTRING_PTR(klass),
(void *)name);
}
}
fprintf(stderr, "\n");
}
{
#ifdef PROC_MAPS_NAME
{
FILE *fp = fopen(PROC_MAPS_NAME, "r");
if (fp) {
fprintf(stderr, "* Process memory map:\n\n");
while (!feof(fp)) {
char buff[0x100];
size_t rn = fread(buff, 1, 0x100, fp);
if (fwrite(buff, 1, rn, stderr) != rn)
break;
}
fclose(fp);
fprintf(stderr, "\n\n");
}
}
#endif /* __linux__ */
#ifdef HAVE_LIBPROCSTAT
# define MIB_KERN_PROC_PID_LEN 4
int mib[MIB_KERN_PROC_PID_LEN];
struct kinfo_proc kp;
size_t len = sizeof(struct kinfo_proc);
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PID;
mib[3] = getpid();
if (sysctl(mib, MIB_KERN_PROC_PID_LEN, &kp, &len, NULL, 0) == -1) {
perror("sysctl");
}
else {
struct procstat *prstat = procstat_open_sysctl();
fprintf(stderr, "* Process memory map:\n\n");
procstat_vm(prstat, &kp);
procstat_close(prstat);
fprintf(stderr, "\n");
}
#endif /* __FreeBSD__ */
}
}
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